diff options
Diffstat (limited to 'target/linux/ar71xx/files/drivers')
23 files changed, 8816 insertions, 0 deletions
diff --git a/target/linux/ar71xx/files/drivers/gpio/gpio-nxp-74hc153.c b/target/linux/ar71xx/files/drivers/gpio/gpio-nxp-74hc153.c new file mode 100644 index 000000000..a5fec5ca7 --- /dev/null +++ b/target/linux/ar71xx/files/drivers/gpio/gpio-nxp-74hc153.c @@ -0,0 +1,247 @@ +/* + * NXP 74HC153 - Dual 4-input multiplexer GPIO driver + * + * Copyright (C) 2010 Gabor Juhos <juhosg@openwrt.org> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ + +#include <linux/module.h> +#include <linux/init.h> +#include <linux/gpio.h> +#include <linux/slab.h> +#include <linux/platform_device.h> +#include <linux/nxp_74hc153.h> + +#define NXP_74HC153_NUM_GPIOS 8 +#define NXP_74HC153_S0_MASK 0x1 +#define NXP_74HC153_S1_MASK 0x2 +#define NXP_74HC153_BANK_MASK 0x4 + +struct nxp_74hc153_chip { + struct device *parent; + struct gpio_chip gpio_chip; + struct mutex lock; +}; + +static struct nxp_74hc153_chip *gpio_to_nxp(struct gpio_chip *gc) +{ + return container_of(gc, struct nxp_74hc153_chip, gpio_chip); +} + +static int nxp_74hc153_direction_input(struct gpio_chip *gc, unsigned offset) +{ + return 0; +} + +static int nxp_74hc153_direction_output(struct gpio_chip *gc, + unsigned offset, int val) +{ + return -EINVAL; +} + +static int nxp_74hc153_get_value(struct gpio_chip *gc, unsigned offset) +{ + struct nxp_74hc153_chip *nxp; + struct nxp_74hc153_platform_data *pdata; + unsigned s0; + unsigned s1; + unsigned pin; + int ret; + + nxp = gpio_to_nxp(gc); + pdata = nxp->parent->platform_data; + + s0 = !!(offset & NXP_74HC153_S0_MASK); + s1 = !!(offset & NXP_74HC153_S1_MASK); + pin = (offset & NXP_74HC153_BANK_MASK) ? pdata->gpio_pin_2y + : pdata->gpio_pin_1y; + + mutex_lock(&nxp->lock); + gpio_set_value(pdata->gpio_pin_s0, s0); + gpio_set_value(pdata->gpio_pin_s1, s1); + ret = gpio_get_value(pin); + mutex_unlock(&nxp->lock); + + return ret; +} + +static void nxp_74hc153_set_value(struct gpio_chip *gc, + unsigned offset, int val) +{ + /* not supported */ +} + +static int __devinit nxp_74hc153_probe(struct platform_device *pdev) +{ + struct nxp_74hc153_platform_data *pdata; + struct nxp_74hc153_chip *nxp; + struct gpio_chip *gc; + int err; + + pdata = pdev->dev.platform_data; + if (pdata == NULL) { + dev_dbg(&pdev->dev, "no platform data specified\n"); + return -EINVAL; + } + + nxp = kzalloc(sizeof(struct nxp_74hc153_chip), GFP_KERNEL); + if (nxp == NULL) { + dev_err(&pdev->dev, "no memory for private data\n"); + return -ENOMEM; + } + + err = gpio_request(pdata->gpio_pin_s0, dev_name(&pdev->dev)); + if (err) { + dev_err(&pdev->dev, "unable to claim gpio %u, err=%d\n", + pdata->gpio_pin_s0, err); + goto err_free_nxp; + } + + err = gpio_request(pdata->gpio_pin_s1, dev_name(&pdev->dev)); + if (err) { + dev_err(&pdev->dev, "unable to claim gpio %u, err=%d\n", + pdata->gpio_pin_s1, err); + goto err_free_s0; + } + + err = gpio_request(pdata->gpio_pin_1y, dev_name(&pdev->dev)); + if (err) { + dev_err(&pdev->dev, "unable to claim gpio %u, err=%d\n", + pdata->gpio_pin_1y, err); + goto err_free_s1; + } + + err = gpio_request(pdata->gpio_pin_2y, dev_name(&pdev->dev)); + if (err) { + dev_err(&pdev->dev, "unable to claim gpio %u, err=%d\n", + pdata->gpio_pin_2y, err); + goto err_free_1y; + } + + err = gpio_direction_output(pdata->gpio_pin_s0, 0); + if (err) { + dev_err(&pdev->dev, + "unable to set direction of gpio %u, err=%d\n", + pdata->gpio_pin_s0, err); + goto err_free_2y; + } + + err = gpio_direction_output(pdata->gpio_pin_s1, 0); + if (err) { + dev_err(&pdev->dev, + "unable to set direction of gpio %u, err=%d\n", + pdata->gpio_pin_s1, err); + goto err_free_2y; + } + + err = gpio_direction_input(pdata->gpio_pin_1y); + if (err) { + dev_err(&pdev->dev, + "unable to set direction of gpio %u, err=%d\n", + pdata->gpio_pin_1y, err); + goto err_free_2y; + } + + err = gpio_direction_input(pdata->gpio_pin_2y); + if (err) { + dev_err(&pdev->dev, + "unable to set direction of gpio %u, err=%d\n", + pdata->gpio_pin_2y, err); + goto err_free_2y; + } + + nxp->parent = &pdev->dev; + mutex_init(&nxp->lock); + + gc = &nxp->gpio_chip; + + gc->direction_input = nxp_74hc153_direction_input; + gc->direction_output = nxp_74hc153_direction_output; + gc->get = nxp_74hc153_get_value; + gc->set = nxp_74hc153_set_value; + gc->can_sleep = 1; + + gc->base = pdata->gpio_base; + gc->ngpio = NXP_74HC153_NUM_GPIOS; + gc->label = dev_name(nxp->parent); + gc->dev = nxp->parent; + gc->owner = THIS_MODULE; + + err = gpiochip_add(&nxp->gpio_chip); + if (err) { + dev_err(&pdev->dev, "unable to add gpio chip, err=%d\n", err); + goto err_free_2y; + } + + platform_set_drvdata(pdev, nxp); + return 0; + +err_free_2y: + gpio_free(pdata->gpio_pin_2y); +err_free_1y: + gpio_free(pdata->gpio_pin_1y); +err_free_s1: + gpio_free(pdata->gpio_pin_s1); +err_free_s0: + gpio_free(pdata->gpio_pin_s0); +err_free_nxp: + kfree(nxp); + return err; +} + +static int nxp_74hc153_remove(struct platform_device *pdev) +{ + struct nxp_74hc153_chip *nxp = platform_get_drvdata(pdev); + struct nxp_74hc153_platform_data *pdata = pdev->dev.platform_data; + + if (nxp) { + int err; + + err = gpiochip_remove(&nxp->gpio_chip); + if (err) { + dev_err(&pdev->dev, + "unable to remove gpio chip, err=%d\n", + err); + return err; + } + + gpio_free(pdata->gpio_pin_2y); + gpio_free(pdata->gpio_pin_1y); + gpio_free(pdata->gpio_pin_s1); + gpio_free(pdata->gpio_pin_s0); + + kfree(nxp); + platform_set_drvdata(pdev, NULL); + } + + return 0; +} + +static struct platform_driver nxp_74hc153_driver = { + .probe = nxp_74hc153_probe, + .remove = __devexit_p(nxp_74hc153_remove), + .driver = { + .name = NXP_74HC153_DRIVER_NAME, + .owner = THIS_MODULE, + }, +}; + +static int __init nxp_74hc153_init(void) +{ + return platform_driver_register(&nxp_74hc153_driver); +} +subsys_initcall(nxp_74hc153_init); + +static void __exit nxp_74hc153_exit(void) +{ + platform_driver_unregister(&nxp_74hc153_driver); +} +module_exit(nxp_74hc153_exit); + +MODULE_AUTHOR("Gabor Juhos <juhosg@openwrt.org>"); +MODULE_DESCRIPTION("GPIO expander driver for NXP 74HC153"); +MODULE_LICENSE("GPL v2"); +MODULE_ALIAS("platform:" NXP_74HC153_DRIVER_NAME); diff --git a/target/linux/ar71xx/files/drivers/leds/leds-rb750.c b/target/linux/ar71xx/files/drivers/leds/leds-rb750.c new file mode 100644 index 000000000..483e4fc96 --- /dev/null +++ b/target/linux/ar71xx/files/drivers/leds/leds-rb750.c @@ -0,0 +1,144 @@ +/* + * LED driver for the RouterBOARD 750 + * + * Copyright (C) 2010 Gabor Juhos <juhosg@openwrt.org> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + * + */ +#include <linux/kernel.h> +#include <linux/module.h> +#include <linux/init.h> +#include <linux/platform_device.h> +#include <linux/leds.h> +#include <linux/slab.h> + +#include <asm/mach-ath79/mach-rb750.h> + +#define DRV_NAME "leds-rb750" + +struct rb750_led_dev { + struct led_classdev cdev; + u32 mask; + int active_low; + void (*latch_change)(u32 clear, u32 set); +}; + +struct rb750_led_drvdata { + struct rb750_led_dev *led_devs; + int num_leds; +}; + +static inline struct rb750_led_dev *to_rbled(struct led_classdev *led_cdev) +{ + return (struct rb750_led_dev *)container_of(led_cdev, + struct rb750_led_dev, cdev); +} + +static void rb750_led_brightness_set(struct led_classdev *led_cdev, + enum led_brightness value) +{ + struct rb750_led_dev *rbled = to_rbled(led_cdev); + int level; + + level = (value == LED_OFF) ? 0 : 1; + level ^= rbled->active_low; + + if (level) + rbled->latch_change(0, rbled->mask); + else + rbled->latch_change(rbled->mask, 0); +} + +static int __devinit rb750_led_probe(struct platform_device *pdev) +{ + struct rb750_led_platform_data *pdata; + struct rb750_led_drvdata *drvdata; + int ret = 0; + int i; + + pdata = pdev->dev.platform_data; + if (!pdata) + return -EINVAL; + + drvdata = kzalloc(sizeof(struct rb750_led_drvdata) + + sizeof(struct rb750_led_dev) * pdata->num_leds, + GFP_KERNEL); + if (!drvdata) + return -ENOMEM; + + drvdata->num_leds = pdata->num_leds; + drvdata->led_devs = (struct rb750_led_dev *) &drvdata[1]; + + for (i = 0; i < drvdata->num_leds; i++) { + struct rb750_led_dev *rbled = &drvdata->led_devs[i]; + struct rb750_led_data *led_data = &pdata->leds[i]; + + rbled->cdev.name = led_data->name; + rbled->cdev.default_trigger = led_data->default_trigger; + rbled->cdev.brightness_set = rb750_led_brightness_set; + rbled->cdev.brightness = LED_OFF; + + rbled->mask = led_data->mask; + rbled->active_low = !!led_data->active_low; + rbled->latch_change = pdata->latch_change; + + ret = led_classdev_register(&pdev->dev, &rbled->cdev); + if (ret) + goto err; + } + + platform_set_drvdata(pdev, drvdata); + return 0; + +err: + for (i = i - 1; i >= 0; i--) + led_classdev_unregister(&drvdata->led_devs[i].cdev); + + kfree(drvdata); + return ret; +} + +static int __devexit rb750_led_remove(struct platform_device *pdev) +{ + struct rb750_led_drvdata *drvdata; + int i; + + drvdata = platform_get_drvdata(pdev); + for (i = 0; i < drvdata->num_leds; i++) + led_classdev_unregister(&drvdata->led_devs[i].cdev); + + kfree(drvdata); + return 0; +} + +static struct platform_driver rb750_led_driver = { + .probe = rb750_led_probe, + .remove = __devexit_p(rb750_led_remove), + .driver = { + .name = DRV_NAME, + .owner = THIS_MODULE, + }, +}; + +MODULE_ALIAS("platform:leds-rb750"); + +static int __init rb750_led_init(void) +{ + return platform_driver_register(&rb750_led_driver); +} + +static void __exit rb750_led_exit(void) +{ + platform_driver_unregister(&rb750_led_driver); +} + +module_init(rb750_led_init); +module_exit(rb750_led_exit); + +MODULE_DESCRIPTION(DRV_NAME); +MODULE_DESCRIPTION("LED driver for the RouterBOARD 750"); +MODULE_AUTHOR("Gabor Juhos <juhosg@openwrt.org>"); +MODULE_LICENSE("GPL v2"); diff --git a/target/linux/ar71xx/files/drivers/leds/leds-wndr3700-usb.c b/target/linux/ar71xx/files/drivers/leds/leds-wndr3700-usb.c new file mode 100644 index 000000000..42f5b70bd --- /dev/null +++ b/target/linux/ar71xx/files/drivers/leds/leds-wndr3700-usb.c @@ -0,0 +1,76 @@ +/* + * USB LED driver for the NETGEAR WNDR3700 + * + * Copyright (C) 2009 Gabor Juhos <juhosg@openwrt.org> + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License version 2 as published + * by the Free Software Foundation. + */ + +#include <linux/leds.h> +#include <linux/module.h> +#include <linux/platform_device.h> + +#include <asm/mach-ath79/ar71xx_regs.h> +#include <asm/mach-ath79/ath79.h> + +#define DRIVER_NAME "wndr3700-led-usb" + +static void wndr3700_usb_led_set(struct led_classdev *cdev, + enum led_brightness brightness) +{ + if (brightness) + ath79_device_reset_clear(AR71XX_RESET_GE1_PHY); + else + ath79_device_reset_set(AR71XX_RESET_GE1_PHY); +} + +static enum led_brightness wndr3700_usb_led_get(struct led_classdev *cdev) +{ + return ath79_device_reset_get(AR71XX_RESET_GE1_PHY) ? LED_OFF : LED_FULL; +} + +static struct led_classdev wndr3700_usb_led = { + .name = "wndr3700:green:usb", + .brightness_set = wndr3700_usb_led_set, + .brightness_get = wndr3700_usb_led_get, +}; + +static int __devinit wndr3700_usb_led_probe(struct platform_device *pdev) +{ + return led_classdev_register(&pdev->dev, &wndr3700_usb_led); +} + +static int __devexit wndr3700_usb_led_remove(struct platform_device *pdev) +{ + led_classdev_unregister(&wndr3700_usb_led); + return 0; +} + +static struct platform_driver wndr3700_usb_led_driver = { + .probe = wndr3700_usb_led_probe, + .remove = __devexit_p(wndr3700_usb_led_remove), + .driver = { + .name = DRIVER_NAME, + .owner = THIS_MODULE, + }, +}; + +static int __init wndr3700_usb_led_init(void) +{ + return platform_driver_register(&wndr3700_usb_led_driver); +} + +static void __exit wndr3700_usb_led_exit(void) +{ + platform_driver_unregister(&wndr3700_usb_led_driver); +} + +module_init(wndr3700_usb_led_init); +module_exit(wndr3700_usb_led_exit); + +MODULE_DESCRIPTION("USB LED driver for the NETGEAR WNDR3700"); +MODULE_AUTHOR("Gabor Juhos <juhosg@openwrt.org>"); +MODULE_LICENSE("GPL v2"); +MODULE_ALIAS("platform:" DRIVER_NAME); diff --git a/target/linux/ar71xx/files/drivers/mtd/nand/ar934x_nfc.c b/target/linux/ar71xx/files/drivers/mtd/nand/ar934x_nfc.c new file mode 100644 index 000000000..9bc9b125f --- /dev/null +++ b/target/linux/ar71xx/files/drivers/mtd/nand/ar934x_nfc.c @@ -0,0 +1,1151 @@ +/* + * Driver for the built-in NAND controller of the Atheros AR934x SoCs + * + * Copyright (C) 2011-2012 Gabor Juhos <juhosg@openwrt.org> + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License version 2 as published + * by the Free Software Foundation. + */ + +#include <linux/init.h> +#include <linux/interrupt.h> +#include <linux/module.h> +#include <linux/dma-mapping.h> +#include <linux/mtd/mtd.h> +#include <linux/mtd/nand.h> +#include <linux/mtd/partitions.h> +#include <linux/platform_device.h> +#include <linux/delay.h> +#include <linux/slab.h> + +#include <linux/platform/ar934x_nfc.h> + +#define AR934X_NFC_REG_CMD 0x00 +#define AR934X_NFC_REG_CTRL 0x04 +#define AR934X_NFC_REG_STATUS 0x08 +#define AR934X_NFC_REG_INT_MASK 0x0c +#define AR934X_NFC_REG_INT_STATUS 0x10 +#define AR934X_NFC_REG_ECC_CTRL 0x14 +#define AR934X_NFC_REG_ECC_OFFSET 0x18 +#define AR934X_NFC_REG_ADDR0_0 0x1c +#define AR934X_NFC_REG_ADDR0_1 0x24 +#define AR934X_NFC_REG_ADDR1_0 0x20 +#define AR934X_NFC_REG_ADDR1_1 0x28 +#define AR934X_NFC_REG_SPARE_SIZE 0x30 +#define AR934X_NFC_REG_PROTECT 0x38 +#define AR934X_NFC_REG_LOOKUP_EN 0x40 +#define AR934X_NFC_REG_LOOKUP(_x) (0x44 + (_i) * 4) +#define AR934X_NFC_REG_DMA_ADDR 0x64 +#define AR934X_NFC_REG_DMA_COUNT 0x68 +#define AR934X_NFC_REG_DMA_CTRL 0x6c +#define AR934X_NFC_REG_MEM_CTRL 0x80 +#define AR934X_NFC_REG_DATA_SIZE 0x84 +#define AR934X_NFC_REG_READ_STATUS 0x88 +#define AR934X_NFC_REG_TIME_SEQ 0x8c +#define AR934X_NFC_REG_TIMINGS_ASYN 0x90 +#define AR934X_NFC_REG_TIMINGS_SYN 0x94 +#define AR934X_NFC_REG_FIFO_DATA 0x98 +#define AR934X_NFC_REG_TIME_MODE 0x9c +#define AR934X_NFC_REG_DMA_ADDR_OFFS 0xa0 +#define AR934X_NFC_REG_FIFO_INIT 0xb0 +#define AR934X_NFC_REG_GEN_SEQ_CTRL 0xb4 + +#define AR934X_NFC_CMD_CMD_SEQ_S 0 +#define AR934X_NFC_CMD_CMD_SEQ_M 0x3f +#define AR934X_NFC_CMD_SEQ_1C 0x00 +#define AR934X_NFC_CMD_SEQ_ERASE 0x0e +#define AR934X_NFC_CMD_SEQ_12 0x0c +#define AR934X_NFC_CMD_SEQ_1C1AXR 0x21 +#define AR934X_NFC_CMD_SEQ_S 0x24 +#define AR934X_NFC_CMD_SEQ_1C3AXR 0x27 +#define AR934X_NFC_CMD_SEQ_1C5A1CXR 0x2a +#define AR934X_NFC_CMD_SEQ_18 0x32 +#define AR934X_NFC_CMD_INPUT_SEL_SIU 0 +#define AR934X_NFC_CMD_INPUT_SEL_DMA BIT(6) +#define AR934X_NFC_CMD_ADDR_SEL_0 0 +#define AR934X_NFC_CMD_ADDR_SEL_1 BIT(7) +#define AR934X_NFC_CMD_CMD0_S 8 +#define AR934X_NFC_CMD_CMD0_M 0xff +#define AR934X_NFC_CMD_CMD1_S 16 +#define AR934X_NFC_CMD_CMD1_M 0xff +#define AR934X_NFC_CMD_CMD2_S 24 +#define AR934X_NFC_CMD_CMD2_M 0xff + +#define AR934X_NFC_CTRL_ADDR_CYCLE0_M 0x7 +#define AR934X_NFC_CTRL_ADDR_CYCLE0_S 0 +#define AR934X_NFC_CTRL_SPARE_EN BIT(3) +#define AR934X_NFC_CTRL_INT_EN BIT(4) +#define AR934X_NFC_CTRL_ECC_EN BIT(5) +#define AR934X_NFC_CTRL_BLOCK_SIZE_S 6 +#define AR934X_NFC_CTRL_BLOCK_SIZE_M 0x3 +#define AR934X_NFC_CTRL_BLOCK_SIZE_32 0 +#define AR934X_NFC_CTRL_BLOCK_SIZE_64 1 +#define AR934X_NFC_CTRL_BLOCK_SIZE_128 2 +#define AR934X_NFC_CTRL_BLOCK_SIZE_256 3 +#define AR934X_NFC_CTRL_PAGE_SIZE_S 8 +#define AR934X_NFC_CTRL_PAGE_SIZE_M 0x7 +#define AR934X_NFC_CTRL_PAGE_SIZE_256 0 +#define AR934X_NFC_CTRL_PAGE_SIZE_512 1 +#define AR934X_NFC_CTRL_PAGE_SIZE_1024 2 +#define AR934X_NFC_CTRL_PAGE_SIZE_2048 3 +#define AR934X_NFC_CTRL_PAGE_SIZE_4096 4 +#define AR934X_NFC_CTRL_PAGE_SIZE_8192 5 +#define AR934X_NFC_CTRL_PAGE_SIZE_16384 6 +#define AR934X_NFC_CTRL_CUSTOM_SIZE_EN BIT(11) +#define AR934X_NFC_CTRL_IO_WIDTH_8BITS 0 +#define AR934X_NFC_CTRL_IO_WIDTH_16BITS BIT(12) +#define AR934X_NFC_CTRL_LOOKUP_EN BIT(13) +#define AR934X_NFC_CTRL_PROT_EN BIT(14) +#define AR934X_NFC_CTRL_WORK_MODE_ASYNC 0 +#define AR934X_NFC_CTRL_WORK_MODE_SYNC BIT(15) +#define AR934X_NFC_CTRL_ADDR0_AUTO_INC BIT(16) +#define AR934X_NFC_CTRL_ADDR1_AUTO_INC BIT(17) +#define AR934X_NFC_CTRL_ADDR_CYCLE1_M 0x7 +#define AR934X_NFC_CTRL_ADDR_CYCLE1_S 18 +#define AR934X_NFC_CTRL_SMALL_PAGE BIT(21) + +#define AR934X_NFC_DMA_CTRL_DMA_START BIT(7) +#define AR934X_NFC_DMA_CTRL_DMA_DIR_WRITE 0 +#define AR934X_NFC_DMA_CTRL_DMA_DIR_READ BIT(6) +#define AR934X_NFC_DMA_CTRL_DMA_MODE_SG BIT(5) +#define AR934X_NFC_DMA_CTRL_DMA_BURST_S 2 +#define AR934X_NFC_DMA_CTRL_DMA_BURST_0 0 +#define AR934X_NFC_DMA_CTRL_DMA_BURST_1 1 +#define AR934X_NFC_DMA_CTRL_DMA_BURST_2 2 +#define AR934X_NFC_DMA_CTRL_DMA_BURST_3 3 +#define AR934X_NFC_DMA_CTRL_DMA_BURST_4 4 +#define AR934X_NFC_DMA_CTRL_DMA_BURST_5 5 +#define AR934X_NFC_DMA_CTRL_ERR_FLAG BIT(1) +#define AR934X_NFC_DMA_CTRL_DMA_READY BIT(0) + +#define AR934X_NFC_INT_DEV_RDY(_x) BIT(4 + (_x)) +#define AR934X_NFC_INT_CMD_END BIT(1) + +/* default timing values */ +#define AR934X_NFC_TIME_SEQ_DEFAULT 0x7fff +#define AR934X_NFC_TIMINGS_ASYN_DEFAULT 0x22 +#define AR934X_NFC_TIMINGS_SYN_DEFAULT 0xf + +#define AR934X_NFC_ID_BUF_SIZE 8 +#define AR934X_NFC_DEV_READY_TIMEOUT 25 /* msecs */ +#define AR934X_NFC_DMA_READY_TIMEOUT 25 /* msecs */ +#define AR934X_NFC_DONE_TIMEOUT 1000 +#define AR934X_NFC_DMA_RETRIES 20 + +#define AR934X_NFC_USE_IRQ true +#define AR934X_NFC_IRQ_MASK AR934X_NFC_INT_DEV_RDY(0) + +#define AR934X_NFC_GENSEQ_SMALL_PAGE_READ 0x30043 + +#undef AR934X_NFC_DEBUG_DATA +#undef AR934X_NFC_DEBUG + +struct ar934x_nfc; + +static inline __attribute__ ((format (printf, 2, 3))) +void _nfc_dbg(struct ar934x_nfc *nfc, const char *fmt, ...) +{ +} + +#ifdef AR934X_NFC_DEBUG +#define nfc_dbg(_nfc, fmt, ...) \ + dev_info((_nfc)->parent, fmt, ##__VA_ARGS__) +#else +#define nfc_dbg(_nfc, fmt, ...) \ + _nfc_dbg((_nfc), fmt, ##__VA_ARGS__) +#endif /* AR934X_NFC_DEBUG */ + +#ifdef AR934X_NFC_DEBUG_DATA +static void +nfc_debug_data(const char *label, void *data, int len) +{ + print_hex_dump(KERN_WARNING, label, DUMP_PREFIX_OFFSET, 16, 1, + data, len, 0); +} +#else +static inline void +nfc_debug_data(const char *label, void *data, int len) {} +#endif /* AR934X_NFC_DEBUG_DATA */ + +struct ar934x_nfc { + struct mtd_info mtd; + struct nand_chip nand_chip; + struct device *parent; + void __iomem *base; + void (*select_chip)(int chip_no); + int irq; + wait_queue_head_t irq_waitq; + + bool spurious_irq_expected; + u32 irq_status; + + u32 ctrl_reg; + bool small_page; + unsigned int addr_count0; + unsigned int addr_count1; + + u8 *buf; + dma_addr_t buf_dma; + unsigned int buf_size; + int buf_index; + + int erase1_page_addr; + + int rndout_page_addr; + int rndout_read_cmd; + + int seqin_page_addr; + int seqin_column; + int seqin_read_cmd; +}; + +static void ar934x_nfc_restart(struct ar934x_nfc *nfc); + +static inline void +ar934x_nfc_wr(struct ar934x_nfc *nfc, unsigned reg, u32 val) +{ + __raw_writel(val, nfc->base + reg); +} + +static inline u32 +ar934x_nfc_rr(struct ar934x_nfc *nfc, unsigned reg) +{ + return __raw_readl(nfc->base + reg); +} + +static inline struct ar934x_nfc_platform_data * +ar934x_nfc_get_platform_data(struct ar934x_nfc *nfc) +{ + return nfc->parent->platform_data; +} + +static inline struct +ar934x_nfc *mtd_to_ar934x_nfc(struct mtd_info *mtd) +{ + return container_of(mtd, struct ar934x_nfc, mtd); +} + +static inline bool ar934x_nfc_use_irq(struct ar934x_nfc *nfc) +{ + return AR934X_NFC_USE_IRQ; +} + +static inline void ar934x_nfc_write_cmd_reg(struct ar934x_nfc *nfc, u32 cmd_reg) +{ + wmb(); + + ar934x_nfc_wr(nfc, AR934X_NFC_REG_CMD, cmd_reg); + /* flush write */ + ar934x_nfc_rr(nfc, AR934X_NFC_REG_CMD); +} + +static bool +__ar934x_nfc_dev_ready(struct ar934x_nfc *nfc) +{ + u32 status; + + status = ar934x_nfc_rr(nfc, AR934X_NFC_REG_STATUS); + return (status & 0xff) == 0xff; +} + +static inline bool +__ar934x_nfc_is_dma_ready(struct ar934x_nfc *nfc) +{ + u32 status; + + status = ar934x_nfc_rr(nfc, AR934X_NFC_REG_DMA_CTRL); + return (status & AR934X_NFC_DMA_CTRL_DMA_READY) != 0; +} + +static int +ar934x_nfc_wait_dev_ready(struct ar934x_nfc *nfc) +{ + unsigned long timeout; + + timeout = jiffies + msecs_to_jiffies(AR934X_NFC_DEV_READY_TIMEOUT); + do { + if (__ar934x_nfc_dev_ready(nfc)) + return 0; + } while time_before(jiffies, timeout); + + nfc_dbg(nfc, "timeout waiting for device ready, status:%08x int:%08x\n", + ar934x_nfc_rr(nfc, AR934X_NFC_REG_STATUS), + ar934x_nfc_rr(nfc, AR934X_NFC_REG_INT_STATUS)); + return -ETIMEDOUT; +} + +static int +ar934x_nfc_wait_dma_ready(struct ar934x_nfc *nfc) +{ + unsigned long timeout; + + timeout = jiffies + msecs_to_jiffies(AR934X_NFC_DMA_READY_TIMEOUT); + do { + if (__ar934x_nfc_is_dma_ready(nfc)) + return 0; + } while time_before(jiffies, timeout); + + nfc_dbg(nfc, "timeout waiting for DMA ready, dma_ctrl:%08x\n", + ar934x_nfc_rr(nfc, AR934X_NFC_REG_DMA_CTRL)); + return -ETIMEDOUT; +} + +static int +ar934x_nfc_wait_irq(struct ar934x_nfc *nfc) +{ + long timeout; + int ret; + + timeout = wait_event_timeout(nfc->irq_waitq, + (nfc->irq_status & AR934X_NFC_IRQ_MASK) != 0, + msecs_to_jiffies(AR934X_NFC_DEV_READY_TIMEOUT)); + + ret = 0; + if (!timeout) { + ar934x_nfc_wr(nfc, AR934X_NFC_REG_INT_MASK, 0); + ar934x_nfc_wr(nfc, AR934X_NFC_REG_INT_STATUS, 0); + /* flush write */ + ar934x_nfc_rr(nfc, AR934X_NFC_REG_INT_STATUS); + + nfc_dbg(nfc, + "timeout waiting for interrupt, status:%08x\n", + nfc->irq_status); + ret = -ETIMEDOUT; + } + + nfc->irq_status = 0; + return ret; +} + +static int +ar934x_nfc_wait_done(struct ar934x_nfc *nfc) +{ + int ret; + + if (ar934x_nfc_use_irq(nfc)) + ret = ar934x_nfc_wait_irq(nfc); + else + ret = ar934x_nfc_wait_dev_ready(nfc); + + if (ret) + return ret; + + return ar934x_nfc_wait_dma_ready(nfc); +} + +static int +ar934x_nfc_alloc_buf(struct ar934x_nfc *nfc, unsigned size) +{ + nfc->buf = dma_alloc_coherent(nfc->parent, size, + &nfc->buf_dma, GFP_KERNEL); + if (nfc->buf == NULL) { + dev_err(nfc->parent, "no memory for DMA buffer\n"); + return -ENOMEM; + } + + nfc->buf_size = size; + nfc_dbg(nfc, "buf:%p size:%u\n", nfc->buf, nfc->buf_size); + + return 0; +} + +static void +ar934x_nfc_free_buf(struct ar934x_nfc *nfc) +{ + dma_free_coherent(nfc->parent, nfc->buf_size, nfc->buf, nfc->buf_dma); +} + +static void +ar934x_nfc_get_addr(struct ar934x_nfc *nfc, int column, int page_addr, + u32 *addr0, u32 *addr1) +{ + u32 a0, a1; + + a0 = 0; + a1 = 0; + + if (column == -1) { + /* ERASE1 */ + a0 = (page_addr & 0xffff) << 16; + a1 = (page_addr >> 16) & 0xf; + } else if (page_addr != -1) { + /* SEQIN, READ0, etc.. */ + + /* TODO: handle 16bit bus width */ + if (nfc->small_page) { + a0 = column & 0xff; + a0 |= (page_addr & 0xff) << 8; + a0 |= ((page_addr >> 8) & 0xff) << 16; + a0 |= ((page_addr >> 16) & 0xff) << 24; + } else { + a0 = column & 0x0FFF; + a0 |= (page_addr & 0xffff) << 16; + + if (nfc->addr_count0 > 4) + a1 = (page_addr >> 16) & 0xf; + } + } + + *addr0 = a0; + *addr1 = a1; +} + +static void +ar934x_nfc_send_cmd(struct ar934x_nfc *nfc, unsigned command) +{ + u32 cmd_reg; + + cmd_reg = AR934X_NFC_CMD_INPUT_SEL_SIU | AR934X_NFC_CMD_ADDR_SEL_0 | + AR934X_NFC_CMD_SEQ_1C; + cmd_reg |= (command & AR934X_NFC_CMD_CMD0_M) << AR934X_NFC_CMD_CMD0_S; + + ar934x_nfc_wr(nfc, AR934X_NFC_REG_INT_STATUS, 0); + ar934x_nfc_wr(nfc, AR934X_NFC_REG_CTRL, nfc->ctrl_reg); + + ar934x_nfc_write_cmd_reg(nfc, cmd_reg); + ar934x_nfc_wait_dev_ready(nfc); +} + +static void +ar934x_nfc_do_rw_command(struct ar934x_nfc *nfc, int column, int page_addr, + int len, u32 cmd_reg, u32 ctrl_reg, bool write) +{ + u32 addr0, addr1; + u32 dma_ctrl; + int dir; + int err; + int retries = 0; + + WARN_ON(len & 3); + + if (WARN_ON(len > nfc->buf_size)) + dev_err(nfc->parent, "len=%d > buf_size=%d", len, nfc->buf_size); + + if (write) { + dma_ctrl = AR934X_NFC_DMA_CTRL_DMA_DIR_WRITE; + dir = DMA_TO_DEVICE; + } else { + dma_ctrl = AR934X_NFC_DMA_CTRL_DMA_DIR_READ; + dir = DMA_FROM_DEVICE; + } + + ar934x_nfc_get_addr(nfc, column, page_addr, &addr0, &addr1); + + dma_ctrl |= AR934X_NFC_DMA_CTRL_DMA_START | + (AR934X_NFC_DMA_CTRL_DMA_BURST_3 << + AR934X_NFC_DMA_CTRL_DMA_BURST_S); + + cmd_reg |= AR934X_NFC_CMD_INPUT_SEL_DMA | AR934X_NFC_CMD_ADDR_SEL_0; + ctrl_reg |= AR934X_NFC_CTRL_INT_EN; + + nfc_dbg(nfc, "%s a0:%08x a1:%08x len:%x cmd:%08x dma:%08x ctrl:%08x\n", + (write) ? "write" : "read", + addr0, addr1, len, cmd_reg, dma_ctrl, ctrl_reg); + +retry: + ar934x_nfc_wr(nfc, AR934X_NFC_REG_INT_STATUS, 0); + ar934x_nfc_wr(nfc, AR934X_NFC_REG_ADDR0_0, addr0); + ar934x_nfc_wr(nfc, AR934X_NFC_REG_ADDR0_1, addr1); + ar934x_nfc_wr(nfc, AR934X_NFC_REG_DMA_ADDR, nfc->buf_dma); + ar934x_nfc_wr(nfc, AR934X_NFC_REG_DMA_COUNT, len); + ar934x_nfc_wr(nfc, AR934X_NFC_REG_DATA_SIZE, len); + ar934x_nfc_wr(nfc, AR934X_NFC_REG_CTRL, ctrl_reg); + ar934x_nfc_wr(nfc, AR934X_NFC_REG_DMA_CTRL, dma_ctrl); + + if (ar934x_nfc_use_irq(nfc)) { + ar934x_nfc_wr(nfc, AR934X_NFC_REG_INT_MASK, AR934X_NFC_IRQ_MASK); + /* flush write */ + ar934x_nfc_rr(nfc, AR934X_NFC_REG_INT_MASK); + } + + ar934x_nfc_write_cmd_reg(nfc, cmd_reg); + err = ar934x_nfc_wait_done(nfc); + if (err) { + dev_dbg(nfc->parent, "%s operation stuck at page %d\n", + (write) ? "write" : "read", page_addr); + + ar934x_nfc_restart(nfc); + if (retries++ < AR934X_NFC_DMA_RETRIES) + goto retry; + + dev_err(nfc->parent, "%s operation failed on page %d\n", + (write) ? "write" : "read", page_addr); + } +} + +static void +ar934x_nfc_send_readid(struct ar934x_nfc *nfc, unsigned command) +{ + u32 cmd_reg; + + nfc_dbg(nfc, "readid, cmd:%02x\n", command); + + cmd_reg = AR934X_NFC_CMD_SEQ_1C1AXR; + cmd_reg |= (command & AR934X_NFC_CMD_CMD0_M) << AR934X_NFC_CMD_CMD0_S; + + ar934x_nfc_do_rw_command(nfc, -1, -1, AR934X_NFC_ID_BUF_SIZE, cmd_reg, + nfc->ctrl_reg, false); + + nfc_debug_data("[id] ", nfc->buf, AR934X_NFC_ID_BUF_SIZE); +} + +static void +ar934x_nfc_send_read(struct ar934x_nfc *nfc, unsigned command, int column, + int page_addr, int len) +{ + u32 cmd_reg; + + nfc_dbg(nfc, "read, column=%d page=%d len=%d\n", + column, page_addr, len); + + cmd_reg = (command & AR934X_NFC_CMD_CMD0_M) << AR934X_NFC_CMD_CMD0_S; + + if (nfc->small_page) { + cmd_reg |= AR934X_NFC_CMD_SEQ_18; + } else { + cmd_reg |= NAND_CMD_READSTART << AR934X_NFC_CMD_CMD1_S; + cmd_reg |= AR934X_NFC_CMD_SEQ_1C5A1CXR; + } + + ar934x_nfc_do_rw_command(nfc, column, page_addr, len, + cmd_reg, nfc->ctrl_reg, false); + + nfc_debug_data("[data] ", nfc->buf, len); +} + +static void +ar934x_nfc_send_erase(struct ar934x_nfc *nfc, unsigned command, int column, + int page_addr) +{ + u32 addr0, addr1; + u32 ctrl_reg; + u32 cmd_reg; + + ar934x_nfc_get_addr(nfc, column, page_addr, &addr0, &addr1); + + ctrl_reg = nfc->ctrl_reg; + if (nfc->small_page) { + /* override number of address cycles for the erase command */ + ctrl_reg &= ~(AR934X_NFC_CTRL_ADDR_CYCLE0_M << + AR934X_NFC_CTRL_ADDR_CYCLE0_S); + ctrl_reg &= ~(AR934X_NFC_CTRL_ADDR_CYCLE1_M << + AR934X_NFC_CTRL_ADDR_CYCLE1_S); + ctrl_reg &= ~(AR934X_NFC_CTRL_SMALL_PAGE); + ctrl_reg |= (nfc->addr_count0 + 1) << + AR934X_NFC_CTRL_ADDR_CYCLE0_S; + } + + cmd_reg = NAND_CMD_ERASE1 << AR934X_NFC_CMD_CMD0_S; + cmd_reg |= command << AR934X_NFC_CMD_CMD1_S; + cmd_reg |= AR934X_NFC_CMD_SEQ_ERASE; + + nfc_dbg(nfc, "erase page %d, a0:%08x a1:%08x cmd:%08x ctrl:%08x\n", + page_addr, addr0, addr1, cmd_reg, ctrl_reg); + + ar934x_nfc_wr(nfc, AR934X_NFC_REG_INT_STATUS, 0); + ar934x_nfc_wr(nfc, AR934X_NFC_REG_CTRL, ctrl_reg); + ar934x_nfc_wr(nfc, AR934X_NFC_REG_ADDR0_0, addr0); + ar934x_nfc_wr(nfc, AR934X_NFC_REG_ADDR0_1, addr1); + + ar934x_nfc_write_cmd_reg(nfc, cmd_reg); + ar934x_nfc_wait_dev_ready(nfc); +} + +static void +ar934x_nfc_send_write(struct ar934x_nfc *nfc, unsigned command, int column, + int page_addr, int len) +{ + u32 cmd_reg; + + nfc_dbg(nfc, "write, column=%d page=%d len=%d\n", + column, page_addr, len); + + nfc_debug_data("[data] ", nfc->buf, len); + + cmd_reg = NAND_CMD_SEQIN << AR934X_NFC_CMD_CMD0_S; + cmd_reg |= command << AR934X_NFC_CMD_CMD1_S; + cmd_reg |= AR934X_NFC_CMD_SEQ_12; + + ar934x_nfc_do_rw_command(nfc, column, page_addr, len, + cmd_reg, nfc->ctrl_reg, true); +} + +static void +ar934x_nfc_read_status(struct ar934x_nfc *nfc) +{ + u32 cmd_reg; + u32 status; + + cmd_reg = NAND_CMD_STATUS << AR934X_NFC_CMD_CMD0_S; + cmd_reg |= AR934X_NFC_CMD_SEQ_S; + + ar934x_nfc_wr(nfc, AR934X_NFC_REG_INT_STATUS, 0); + ar934x_nfc_wr(nfc, AR934X_NFC_REG_CTRL, nfc->ctrl_reg); + + ar934x_nfc_write_cmd_reg(nfc, cmd_reg); + ar934x_nfc_wait_dev_ready(nfc); + + status = ar934x_nfc_rr(nfc, AR934X_NFC_REG_READ_STATUS); + + nfc_dbg(nfc, "read status, cmd:%08x status:%02x\n", + cmd_reg, (status & 0xff)); + + nfc->buf[0 ^ 3] = status; +} + +static void +ar934x_nfc_cmdfunc(struct mtd_info *mtd, unsigned int command, int column, + int page_addr) +{ + struct ar934x_nfc *nfc = mtd_to_ar934x_nfc(mtd); + + if (command != NAND_CMD_PAGEPROG) + nfc->buf_index = 0; + + switch (command) { + case NAND_CMD_RESET: + ar934x_nfc_send_cmd(nfc, command); + break; + + case NAND_CMD_READID: + ar934x_nfc_send_readid(nfc, command); + break; + + case NAND_CMD_READ0: + case NAND_CMD_READ1: + if (nfc->small_page) { + ar934x_nfc_send_read(nfc, command, column, page_addr, + mtd->writesize + mtd->oobsize); + } else { + ar934x_nfc_send_read(nfc, command, 0, page_addr, + mtd->writesize + mtd->oobsize); + nfc->buf_index = column; + nfc->rndout_page_addr = page_addr; + nfc->rndout_read_cmd = command; + } + break; + + case NAND_CMD_READOOB: + if (nfc->small_page) + ar934x_nfc_send_read(nfc, NAND_CMD_READOOB, + column, page_addr, + mtd->oobsize); + else + ar934x_nfc_send_read(nfc, NAND_CMD_READ0, + mtd->writesize, page_addr, + mtd->oobsize); + break; + + case NAND_CMD_RNDOUT: + if (WARN_ON(nfc->small_page)) + break; + + /* emulate subpage read */ + ar934x_nfc_send_read(nfc, nfc->rndout_read_cmd, 0, + nfc->rndout_page_addr, + mtd->writesize + mtd->oobsize); + nfc->buf_index = column; + break; + + case NAND_CMD_ERASE1: + nfc->erase1_page_addr = page_addr; + break; + + case NAND_CMD_ERASE2: + ar934x_nfc_send_erase(nfc, command, -1, nfc->erase1_page_addr); + break; + + case NAND_CMD_STATUS: + ar934x_nfc_read_status(nfc); + break; + + case NAND_CMD_SEQIN: + if (nfc->small_page) { + /* output read command */ + if (column >= mtd->writesize) { + column -= mtd->writesize; + nfc->seqin_read_cmd = NAND_CMD_READOOB; + } else if (column < 256) { + nfc->seqin_read_cmd = NAND_CMD_READ0; + } else { + column -= 256; + nfc->seqin_read_cmd = NAND_CMD_READ1; + } + } else { + nfc->seqin_read_cmd = NAND_CMD_READ0; + } + nfc->seqin_column = column; + nfc->seqin_page_addr = page_addr; + break; + + case NAND_CMD_PAGEPROG: + if (nfc->small_page) + ar934x_nfc_send_cmd(nfc, nfc->seqin_read_cmd); + + ar934x_nfc_send_write(nfc, command, nfc->seqin_column, + nfc->seqin_page_addr, + nfc->buf_index); + break; + + default: + dev_err(nfc->parent, + "unsupported command: %x, column:%d page_addr=%d\n", + command, column, page_addr); + break; + } +} + +static int +ar934x_nfc_dev_ready(struct mtd_info *mtd) +{ + struct ar934x_nfc *nfc = mtd_to_ar934x_nfc(mtd); + + return __ar934x_nfc_dev_ready(nfc); +} + +static void +ar934x_nfc_select_chip(struct mtd_info *mtd, int chip_no) +{ + struct ar934x_nfc *nfc = mtd_to_ar934x_nfc(mtd); + + if (nfc->select_chip) + nfc->select_chip(chip_no); +} + +static u8 +ar934x_nfc_read_byte(struct mtd_info *mtd) +{ + struct ar934x_nfc *nfc = mtd_to_ar934x_nfc(mtd); + unsigned int buf_index; + u8 data; + + WARN_ON(nfc->buf_index >= nfc->buf_size); + + buf_index = nfc->buf_index ^ 3; + data = nfc->buf[buf_index]; + nfc->buf_index++; + + return data; +} + +static void +ar934x_nfc_write_buf(struct mtd_info *mtd, const u8 *buf, int len) +{ + struct ar934x_nfc *nfc = mtd_to_ar934x_nfc(mtd); + int i; + + WARN_ON(nfc->buf_index + len > nfc->buf_size); + + for (i = 0; i < len; i++) { + nfc->buf[nfc->buf_index ^ 3] = buf[i]; + nfc->buf_index++; + } +} + +static void +ar934x_nfc_read_buf(struct mtd_info *mtd, u8 *buf, int len) +{ + struct ar934x_nfc *nfc = mtd_to_ar934x_nfc(mtd); + int buf_index; + int i; + + WARN_ON(nfc->buf_index + len > nfc->buf_size); + + buf_index = nfc->buf_index; + + for (i = 0; i < len; i++) { + buf[i] = nfc->buf[buf_index ^ 3]; + buf_index++; + } + + nfc->buf_index = buf_index; +} + +static int +ar934x_nfc_verify_buf(struct mtd_info *mtd, const u_char *buf, int len) +{ + int i; + + for (i = 0; i < len; i++) + if (buf[i] != ar934x_nfc_read_byte(mtd)) + return -EFAULT; + + return 0; +} + +static void +ar934x_nfc_hw_init(struct ar934x_nfc *nfc) +{ + struct ar934x_nfc_platform_data *pdata; + + pdata = ar934x_nfc_get_platform_data(nfc); + if (pdata->hw_reset) { + pdata->hw_reset(true); + pdata->hw_reset(false); + } + + /* + * setup timings + * TODO: make it configurable via platform data + */ + ar934x_nfc_wr(nfc, AR934X_NFC_REG_TIME_SEQ, + AR934X_NFC_TIME_SEQ_DEFAULT); + ar934x_nfc_wr(nfc, AR934X_NFC_REG_TIMINGS_ASYN, + AR934X_NFC_TIMINGS_ASYN_DEFAULT); + ar934x_nfc_wr(nfc, AR934X_NFC_REG_TIMINGS_SYN, + AR934X_NFC_TIMINGS_SYN_DEFAULT); + + /* disable WP on all chips, and select chip 0 */ + ar934x_nfc_wr(nfc, AR934X_NFC_REG_MEM_CTRL, 0xff00); + + ar934x_nfc_wr(nfc, AR934X_NFC_REG_DMA_ADDR_OFFS, 0); + + /* initialize Control register */ + nfc->ctrl_reg = AR934X_NFC_CTRL_CUSTOM_SIZE_EN; + ar934x_nfc_wr(nfc, AR934X_NFC_REG_CTRL, nfc->ctrl_reg); + + if (nfc->small_page) { + /* Setup generic sequence register for small page reads. */ + ar934x_nfc_wr(nfc, AR934X_NFC_REG_GEN_SEQ_CTRL, + AR934X_NFC_GENSEQ_SMALL_PAGE_READ); + } +} + +static void +ar934x_nfc_restart(struct ar934x_nfc *nfc) +{ + u32 ctrl_reg; + + if (nfc->select_chip) + nfc->select_chip(-1); + + ctrl_reg = nfc->ctrl_reg; + ar934x_nfc_hw_init(nfc); + nfc->ctrl_reg = ctrl_reg; + + if (nfc->select_chip) + nfc->select_chip(0); + + ar934x_nfc_send_cmd(nfc, NAND_CMD_RESET); +} + +static irqreturn_t +ar934x_nfc_irq_handler(int irq, void *data) +{ + struct ar934x_nfc *nfc = data; + u32 status; + + status = ar934x_nfc_rr(nfc, AR934X_NFC_REG_INT_STATUS); + + ar934x_nfc_wr(nfc, AR934X_NFC_REG_INT_STATUS, 0); + /* flush write */ + ar934x_nfc_rr(nfc, AR934X_NFC_REG_INT_STATUS); + + status &= ar934x_nfc_rr(nfc, AR934X_NFC_REG_INT_MASK); + if (status) { + nfc_dbg(nfc, "got IRQ, status:%08x\n", status); + + nfc->irq_status = status; + nfc->spurious_irq_expected = true; + wake_up(&nfc->irq_waitq); + } else { + if (nfc->spurious_irq_expected) { + nfc->spurious_irq_expected = false; + } else { + dev_warn(nfc->parent, "spurious interrupt\n"); + } + } + + return IRQ_HANDLED; +} + +static int __devinit +ar934x_nfc_init_tail(struct mtd_info *mtd) +{ + struct ar934x_nfc *nfc = mtd_to_ar934x_nfc(mtd); + struct nand_chip *chip = &nfc->nand_chip; + u32 ctrl; + u32 t; + int err; + + switch (mtd->oobsize) { + case 16: + case 64: + case 128: + ar934x_nfc_wr(nfc, AR934X_NFC_REG_SPARE_SIZE, mtd->oobsize); + break; + + default: + dev_err(nfc->parent, "unsupported OOB size: %d bytes\n", + mtd->oobsize); + return -ENXIO; + } + + ctrl = AR934X_NFC_CTRL_CUSTOM_SIZE_EN; + + switch (mtd->erasesize / mtd->writesize) { + case 32: + t = AR934X_NFC_CTRL_BLOCK_SIZE_32; + break; + + case 64: + t = AR934X_NFC_CTRL_BLOCK_SIZE_64; + break; + + case 128: + t = AR934X_NFC_CTRL_BLOCK_SIZE_128; + break; + + case 256: + t = AR934X_NFC_CTRL_BLOCK_SIZE_256; + break; + + default: + dev_err(nfc->parent, "unsupported block size: %u\n", + mtd->erasesize / mtd->writesize); + return -ENXIO; + } + + ctrl |= t << AR934X_NFC_CTRL_BLOCK_SIZE_S; + + switch (mtd->writesize) { + case 256: + nfc->small_page = 1; + t = AR934X_NFC_CTRL_PAGE_SIZE_256; + break; + + case 512: + nfc->small_page = 1; + t = AR934X_NFC_CTRL_PAGE_SIZE_512; + break; + + case 1024: + t = AR934X_NFC_CTRL_PAGE_SIZE_1024; + break; + + case 2048: + t = AR934X_NFC_CTRL_PAGE_SIZE_2048; + break; + + case 4096: + t = AR934X_NFC_CTRL_PAGE_SIZE_4096; + break; + + case 8192: + t = AR934X_NFC_CTRL_PAGE_SIZE_8192; + break; + + case 16384: + t = AR934X_NFC_CTRL_PAGE_SIZE_16384; + break; + + default: + dev_err(nfc->parent, "unsupported write size: %d bytes\n", + mtd->writesize); + return -ENXIO; + } + + ctrl |= t << AR934X_NFC_CTRL_PAGE_SIZE_S; + + if (nfc->small_page) { + ctrl |= AR934X_NFC_CTRL_SMALL_PAGE; + + if (chip->chipsize > (32 << 20)) { + nfc->addr_count0 = 4; + nfc->addr_count1 = 3; + } else if (chip->chipsize > (2 << 16)) { + nfc->addr_count0 = 3; + nfc->addr_count1 = 2; + } else { + nfc->addr_count0 = 2; + nfc->addr_count1 = 1; + } + } else { + if (chip->chipsize > (128 << 20)) { + nfc->addr_count0 = 5; + nfc->addr_count1 = 3; + } else if (chip->chipsize > (8 << 16)) { + nfc->addr_count0 = 4; + nfc->addr_count1 = 2; + } else { + nfc->addr_count0 = 3; + nfc->addr_count1 = 1; + } + } + + ctrl |= nfc->addr_count0 << AR934X_NFC_CTRL_ADDR_CYCLE0_S; + ctrl |= nfc->addr_count1 << AR934X_NFC_CTRL_ADDR_CYCLE1_S; + + nfc->ctrl_reg = ctrl; + ar934x_nfc_wr(nfc, AR934X_NFC_REG_CTRL, nfc->ctrl_reg); + + ar934x_nfc_free_buf(nfc); + err = ar934x_nfc_alloc_buf(nfc, mtd->writesize + mtd->oobsize); + + return err; +} + +static int __devinit +ar934x_nfc_probe(struct platform_device *pdev) +{ + static const char *part_probes[] = { "cmdlinepart", NULL, }; + struct ar934x_nfc_platform_data *pdata; + struct ar934x_nfc *nfc; + struct resource *res; + struct mtd_info *mtd; + struct nand_chip *nand; + struct mtd_part_parser_data ppdata; + int ret; + + pdata = pdev->dev.platform_data; + if (pdata == NULL) { + dev_err(&pdev->dev, "no platform data defined\n"); + return -EINVAL; + } + + res = platform_get_resource(pdev, IORESOURCE_MEM, 0); + if (!res) { + dev_err(&pdev->dev, "failed to get I/O memory\n"); + return -EINVAL; + } + + nfc = kzalloc(sizeof(struct ar934x_nfc), GFP_KERNEL); + if (!nfc) { + dev_err(&pdev->dev, "failed to allocate driver data\n"); + return -ENOMEM; + } + + nfc->base = ioremap(res->start, resource_size(res)); + if (nfc->base == NULL) { + dev_err(&pdev->dev, "failed to remap I/O memory\n"); + ret = -ENXIO; + goto err_free_nand; + } + + nfc->irq = platform_get_irq(pdev, 0); + if (nfc->irq < 0) { + dev_err(&pdev->dev, "no IRQ resource specified\n"); + ret = -EINVAL; + goto err_unmap; + } + + init_waitqueue_head(&nfc->irq_waitq); + ret = request_irq(nfc->irq, ar934x_nfc_irq_handler, IRQF_DISABLED, + dev_name(&pdev->dev), nfc); + if (ret) { + dev_err(&pdev->dev, "requast_irq failed, err:%d\n", ret); + goto err_unmap; + } + + nfc->parent = &pdev->dev; + nfc->select_chip = pdata->select_chip; + + nand = &nfc->nand_chip; + mtd = &nfc->mtd; + + mtd->priv = nand; + mtd->owner = THIS_MODULE; + if (pdata->name) + mtd->name = pdata->name; + else + mtd->name = dev_name(&pdev->dev); + + nand->options = NAND_NO_AUTOINCR; + nand->chip_delay = 25; + nand->ecc.mode = NAND_ECC_SOFT; + + nand->dev_ready = ar934x_nfc_dev_ready; + nand->cmdfunc = ar934x_nfc_cmdfunc; + nand->read_byte = ar934x_nfc_read_byte; + nand->write_buf = ar934x_nfc_write_buf; + nand->read_buf = ar934x_nfc_read_buf; + nand->verify_buf = ar934x_nfc_verify_buf; + nand->select_chip = ar934x_nfc_select_chip; + + ret = ar934x_nfc_alloc_buf(nfc, AR934X_NFC_ID_BUF_SIZE); + if (ret) + goto err_free_irq; + + platform_set_drvdata(pdev, nfc); + + ar934x_nfc_hw_init(nfc); + + ret = nand_scan_ident(mtd, 1, NULL); + if (ret) { + dev_err(&pdev->dev, "nand_scan_ident failed, err:%d\n", ret); + goto err_free_buf; + } + + ret = ar934x_nfc_init_tail(mtd); + if (ret) { + dev_err(&pdev->dev, "init tail failed, err:%d\n", ret); + goto err_free_buf; + } + + if (pdata->scan_fixup) { + ret = pdata->scan_fixup(mtd); + if (ret) + goto err_free_buf; + } + + ret = nand_scan_tail(mtd); + if (ret) { + dev_err(&pdev->dev, "scan tail failed, err:%d\n", ret); + goto err_free_buf; + } + + memset(&ppdata, '\0', sizeof(ppdata)); + ret = mtd_device_parse_register(mtd, part_probes, &ppdata, + pdata->parts, pdata->nr_parts); + if (ret) { + dev_err(&pdev->dev, "unable to register mtd, err:%d\n", ret); + goto err_free_buf; + } + + return 0; + +err_free_buf: + ar934x_nfc_free_buf(nfc); +err_free_irq: + free_irq(nfc->irq, nfc); +err_unmap: + iounmap(nfc->base); +err_free_nand: + kfree(nfc); + platform_set_drvdata(pdev, NULL); + return ret; +} + +static int __devexit +ar934x_nfc_remove(struct platform_device *pdev) +{ + struct ar934x_nfc *nfc; + + nfc = platform_get_drvdata(pdev); + if (nfc) { + nand_release(&nfc->mtd); + ar934x_nfc_free_buf(nfc); + free_irq(nfc->irq, nfc); + iounmap(nfc->base); + kfree(nfc); + } + + return 0; +} + +static struct platform_driver ar934x_nfc_driver = { + .probe = ar934x_nfc_probe, + .remove = __devexit_p(ar934x_nfc_remove), + .driver = { + .name = AR934X_NFC_DRIVER_NAME, + .owner = THIS_MODULE, + }, +}; + +module_platform_driver(ar934x_nfc_driver); + +MODULE_LICENSE("GPL v2"); +MODULE_AUTHOR("Gabor Juhos <juhosg@openwrt.org>"); +MODULE_DESCRIPTION("Atheros AR934x NAND Flash Controller driver"); +MODULE_ALIAS("platform:" AR934X_NFC_DRIVER_NAME); diff --git a/target/linux/ar71xx/files/drivers/mtd/nand/rb4xx_nand.c b/target/linux/ar71xx/files/drivers/mtd/nand/rb4xx_nand.c new file mode 100644 index 000000000..1cb8f8240 --- /dev/null +++ b/target/linux/ar71xx/files/drivers/mtd/nand/rb4xx_nand.c @@ -0,0 +1,309 @@ +/* + * NAND flash driver for the MikroTik RouterBoard 4xx series + * + * Copyright (C) 2008-2011 Gabor Juhos <juhosg@openwrt.org> + * Copyright (C) 2008 Imre Kaloz <kaloz@openwrt.org> + * + * This file was based on the driver for Linux 2.6.22 published by + * MikroTik for their RouterBoard 4xx series devices. + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License version 2 as published + * by the Free Software Foundation. + */ + +#include <linux/kernel.h> +#include <linux/module.h> +#include <linux/init.h> +#include <linux/mtd/nand.h> +#include <linux/mtd/mtd.h> +#include <linux/mtd/partitions.h> +#include <linux/platform_device.h> +#include <linux/delay.h> +#include <linux/io.h> +#include <linux/gpio.h> +#include <linux/slab.h> + +#include <asm/mach-ath79/ath79.h> +#include <asm/mach-ath79/rb4xx_cpld.h> + +#define DRV_NAME "rb4xx-nand" +#define DRV_VERSION "0.2.0" +#define DRV_DESC "NAND flash driver for RouterBoard 4xx series" + +#define RB4XX_NAND_GPIO_READY 5 +#define RB4XX_NAND_GPIO_ALE 37 +#define RB4XX_NAND_GPIO_CLE 38 +#define RB4XX_NAND_GPIO_NCE 39 + +struct rb4xx_nand_info { + struct nand_chip chip; + struct mtd_info mtd; +}; + +/* + * We need to use the OLD Yaffs-1 OOB layout, otherwise the RB bootloader + * will not be able to find the kernel that we load. + */ +static struct nand_ecclayout rb4xx_nand_ecclayout = { + .eccbytes = 6, + .eccpos = { 8, 9, 10, 13, 14, 15 }, + .oobavail = 9, + .oobfree = { { 0, 4 }, { 6, 2 }, { 11, 2 }, { 4, 1 } } +}; + +static struct mtd_partition rb4xx_nand_partitions[] = { + { + .name = "booter", + .offset = 0, + .size = (256 * 1024), + .mask_flags = MTD_WRITEABLE, + }, + { + .name = "kernel", + .offset = (256 * 1024), + .size = (6 * 1024 * 1024) - (256 * 1024), + }, + { + .name = "rootfs", + .offset = MTDPART_OFS_NXTBLK, + .size = MTDPART_SIZ_FULL, + }, +}; + +static int rb4xx_nand_dev_ready(struct mtd_info *mtd) +{ + return gpio_get_value_cansleep(RB4XX_NAND_GPIO_READY); +} + +static void rb4xx_nand_write_cmd(unsigned char cmd) +{ + unsigned char data = cmd; + int err; + + err = rb4xx_cpld_write(&data, 1); + if (err) + pr_err("rb4xx_nand: write cmd failed, err=%d\n", err); +} + +static void rb4xx_nand_cmd_ctrl(struct mtd_info *mtd, int cmd, + unsigned int ctrl) +{ + if (ctrl & NAND_CTRL_CHANGE) { + gpio_set_value_cansleep(RB4XX_NAND_GPIO_CLE, + (ctrl & NAND_CLE) ? 1 : 0); + gpio_set_value_cansleep(RB4XX_NAND_GPIO_ALE, + (ctrl & NAND_ALE) ? 1 : 0); + gpio_set_value_cansleep(RB4XX_NAND_GPIO_NCE, + (ctrl & NAND_NCE) ? 0 : 1); + } + + if (cmd != NAND_CMD_NONE) + rb4xx_nand_write_cmd(cmd); +} + +static unsigned char rb4xx_nand_read_byte(struct mtd_info *mtd) +{ + unsigned char data = 0; + int err; + + err = rb4xx_cpld_read(&data, NULL, 1); + if (err) { + pr_err("rb4xx_nand: read data failed, err=%d\n", err); + data = 0xff; + } + + return data; +} + +static void rb4xx_nand_write_buf(struct mtd_info *mtd, const unsigned char *buf, + int len) +{ + int err; + + err = rb4xx_cpld_write(buf, len); + if (err) + pr_err("rb4xx_nand: write buf failed, err=%d\n", err); +} + +static void rb4xx_nand_read_buf(struct mtd_info *mtd, unsigned char *buf, + int len) +{ + int err; + + err = rb4xx_cpld_read(buf, NULL, len); + if (err) + pr_err("rb4xx_nand: read buf failed, err=%d\n", err); +} + +static int __devinit rb4xx_nand_probe(struct platform_device *pdev) +{ + struct rb4xx_nand_info *info; + int ret; + + printk(KERN_INFO DRV_DESC " version " DRV_VERSION "\n"); + + ret = gpio_request(RB4XX_NAND_GPIO_READY, "NAND RDY"); + if (ret) { + dev_err(&pdev->dev, "unable to request gpio %d\n", + RB4XX_NAND_GPIO_READY); + goto err; + } + + ret = gpio_direction_input(RB4XX_NAND_GPIO_READY); + if (ret) { + dev_err(&pdev->dev, "unable to set input mode on gpio %d\n", + RB4XX_NAND_GPIO_READY); + goto err_free_gpio_ready; + } + + ret = gpio_request(RB4XX_NAND_GPIO_ALE, "NAND ALE"); + if (ret) { + dev_err(&pdev->dev, "unable to request gpio %d\n", + RB4XX_NAND_GPIO_ALE); + goto err_free_gpio_ready; + } + + ret = gpio_direction_output(RB4XX_NAND_GPIO_ALE, 0); + if (ret) { + dev_err(&pdev->dev, "unable to set output mode on gpio %d\n", + RB4XX_NAND_GPIO_ALE); + goto err_free_gpio_ale; + } + + ret = gpio_request(RB4XX_NAND_GPIO_CLE, "NAND CLE"); + if (ret) { + dev_err(&pdev->dev, "unable to request gpio %d\n", + RB4XX_NAND_GPIO_CLE); + goto err_free_gpio_ale; + } + + ret = gpio_direction_output(RB4XX_NAND_GPIO_CLE, 0); + if (ret) { + dev_err(&pdev->dev, "unable to set output mode on gpio %d\n", + RB4XX_NAND_GPIO_CLE); + goto err_free_gpio_cle; + } + + ret = gpio_request(RB4XX_NAND_GPIO_NCE, "NAND NCE"); + if (ret) { + dev_err(&pdev->dev, "unable to request gpio %d\n", + RB4XX_NAND_GPIO_NCE); + goto err_free_gpio_cle; + } + + ret = gpio_direction_output(RB4XX_NAND_GPIO_NCE, 1); + if (ret) { + dev_err(&pdev->dev, "unable to set output mode on gpio %d\n", + RB4XX_NAND_GPIO_ALE); + goto err_free_gpio_nce; + } + + info = kzalloc(sizeof(*info), GFP_KERNEL); + if (!info) { + dev_err(&pdev->dev, "rb4xx-nand: no memory for private data\n"); + ret = -ENOMEM; + goto err_free_gpio_nce; + } + + info->chip.priv = &info; + info->mtd.priv = &info->chip; + info->mtd.owner = THIS_MODULE; + + info->chip.cmd_ctrl = rb4xx_nand_cmd_ctrl; + info->chip.dev_ready = rb4xx_nand_dev_ready; + info->chip.read_byte = rb4xx_nand_read_byte; + info->chip.write_buf = rb4xx_nand_write_buf; + info->chip.read_buf = rb4xx_nand_read_buf; +#if 0 + info->chip.verify_buf = rb4xx_nand_verify_buf; +#endif + + info->chip.chip_delay = 25; + info->chip.ecc.mode = NAND_ECC_SOFT; + info->chip.options |= NAND_NO_AUTOINCR; + + platform_set_drvdata(pdev, info); + + ret = nand_scan_ident(&info->mtd, 1, NULL); + if (ret) { + ret = -ENXIO; + goto err_free_info; + } + + if (info->mtd.writesize == 512) + info->chip.ecc.layout = &rb4xx_nand_ecclayout; + + ret = nand_scan_tail(&info->mtd); + if (ret) { + return -ENXIO; + goto err_set_drvdata; + } + + mtd_device_register(&info->mtd, rb4xx_nand_partitions, + ARRAY_SIZE(rb4xx_nand_partitions)); + if (ret) + goto err_release_nand; + + return 0; + +err_release_nand: + nand_release(&info->mtd); +err_set_drvdata: + platform_set_drvdata(pdev, NULL); +err_free_info: + kfree(info); +err_free_gpio_nce: + gpio_free(RB4XX_NAND_GPIO_NCE); +err_free_gpio_cle: + gpio_free(RB4XX_NAND_GPIO_CLE); +err_free_gpio_ale: + gpio_free(RB4XX_NAND_GPIO_ALE); +err_free_gpio_ready: + gpio_free(RB4XX_NAND_GPIO_READY); +err: + return ret; +} + +static int __devexit rb4xx_nand_remove(struct platform_device *pdev) +{ + struct rb4xx_nand_info *info = platform_get_drvdata(pdev); + + nand_release(&info->mtd); + platform_set_drvdata(pdev, NULL); + kfree(info); + gpio_free(RB4XX_NAND_GPIO_NCE); + gpio_free(RB4XX_NAND_GPIO_CLE); + gpio_free(RB4XX_NAND_GPIO_ALE); + gpio_free(RB4XX_NAND_GPIO_READY); + + return 0; +} + +static struct platform_driver rb4xx_nand_driver = { + .probe = rb4xx_nand_probe, + .remove = __devexit_p(rb4xx_nand_remove), + .driver = { + .name = DRV_NAME, + .owner = THIS_MODULE, + }, +}; + +static int __init rb4xx_nand_init(void) +{ + return platform_driver_register(&rb4xx_nand_driver); +} + +static void __exit rb4xx_nand_exit(void) +{ + platform_driver_unregister(&rb4xx_nand_driver); +} + +module_init(rb4xx_nand_init); +module_exit(rb4xx_nand_exit); + +MODULE_DESCRIPTION(DRV_DESC); +MODULE_VERSION(DRV_VERSION); +MODULE_AUTHOR("Gabor Juhos <juhosg@openwrt.org>"); +MODULE_AUTHOR("Imre Kaloz <kaloz@openwrt.org>"); +MODULE_LICENSE("GPL v2"); diff --git a/target/linux/ar71xx/files/drivers/mtd/nand/rb750_nand.c b/target/linux/ar71xx/files/drivers/mtd/nand/rb750_nand.c new file mode 100644 index 000000000..251e18220 --- /dev/null +++ b/target/linux/ar71xx/files/drivers/mtd/nand/rb750_nand.c @@ -0,0 +1,367 @@ +/* + * NAND flash driver for the MikroTik RouterBOARD 750 + * + * Copyright (C) 2010-2012 Gabor Juhos <juhosg@openwrt.org> + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License version 2 as published + * by the Free Software Foundation. + */ + +#include <linux/kernel.h> +#include <linux/module.h> +#include <linux/mtd/nand.h> +#include <linux/mtd/mtd.h> +#include <linux/mtd/partitions.h> +#include <linux/platform_device.h> +#include <linux/io.h> +#include <linux/slab.h> + +#include <asm/mach-ath79/ar71xx_regs.h> +#include <asm/mach-ath79/ath79.h> +#include <asm/mach-ath79/mach-rb750.h> + +#define DRV_NAME "rb750-nand" +#define DRV_VERSION "0.1.0" +#define DRV_DESC "NAND flash driver for the RouterBOARD 750" + +#define RB750_NAND_IO0 BIT(RB750_GPIO_NAND_IO0) +#define RB750_NAND_ALE BIT(RB750_GPIO_NAND_ALE) +#define RB750_NAND_CLE BIT(RB750_GPIO_NAND_CLE) +#define RB750_NAND_NRE BIT(RB750_GPIO_NAND_NRE) +#define RB750_NAND_NWE BIT(RB750_GPIO_NAND_NWE) +#define RB750_NAND_RDY BIT(RB750_GPIO_NAND_RDY) + +#define RB750_NAND_DATA_SHIFT 1 +#define RB750_NAND_DATA_BITS (0xff << RB750_NAND_DATA_SHIFT) +#define RB750_NAND_INPUT_BITS (RB750_NAND_DATA_BITS | RB750_NAND_RDY) +#define RB750_NAND_OUTPUT_BITS (RB750_NAND_ALE | RB750_NAND_CLE | \ + RB750_NAND_NRE | RB750_NAND_NWE) + +struct rb750_nand_info { + struct nand_chip chip; + struct mtd_info mtd; + struct rb7xx_nand_platform_data *pdata; +}; + +static inline struct rb750_nand_info *mtd_to_rbinfo(struct mtd_info *mtd) +{ + return container_of(mtd, struct rb750_nand_info, mtd); +} + +/* + * We need to use the OLD Yaffs-1 OOB layout, otherwise the RB bootloader + * will not be able to find the kernel that we load. + */ +static struct nand_ecclayout rb750_nand_ecclayout = { + .eccbytes = 6, + .eccpos = { 8, 9, 10, 13, 14, 15 }, + .oobavail = 9, + .oobfree = { { 0, 4 }, { 6, 2 }, { 11, 2 }, { 4, 1 } } +}; + +static struct mtd_partition rb750_nand_partitions[] = { + { + .name = "booter", + .offset = 0, + .size = (256 * 1024), + .mask_flags = MTD_WRITEABLE, + }, { + .name = "kernel", + .offset = (256 * 1024), + .size = (4 * 1024 * 1024) - (256 * 1024), + }, { + .name = "rootfs", + .offset = MTDPART_OFS_NXTBLK, + .size = MTDPART_SIZ_FULL, + }, +}; + +static void rb750_nand_write(const u8 *buf, unsigned len) +{ + void __iomem *base = ath79_gpio_base; + u32 out; + u32 t; + unsigned i; + + /* set data lines to output mode */ + t = __raw_readl(base + AR71XX_GPIO_REG_OE); + __raw_writel(t | RB750_NAND_DATA_BITS, base + AR71XX_GPIO_REG_OE); + + out = __raw_readl(base + AR71XX_GPIO_REG_OUT); + out &= ~(RB750_NAND_DATA_BITS | RB750_NAND_NWE); + for (i = 0; i != len; i++) { + u32 data; + + data = buf[i]; + data <<= RB750_NAND_DATA_SHIFT; + data |= out; + __raw_writel(data, base + AR71XX_GPIO_REG_OUT); + + __raw_writel(data | RB750_NAND_NWE, base + AR71XX_GPIO_REG_OUT); + /* flush write */ + __raw_readl(base + AR71XX_GPIO_REG_OUT); + } + + /* set data lines to input mode */ + t = __raw_readl(base + AR71XX_GPIO_REG_OE); + __raw_writel(t & ~RB750_NAND_DATA_BITS, base + AR71XX_GPIO_REG_OE); + /* flush write */ + __raw_readl(base + AR71XX_GPIO_REG_OE); +} + +static int rb750_nand_read_verify(u8 *read_buf, unsigned len, + const u8 *verify_buf) +{ + void __iomem *base = ath79_gpio_base; + unsigned i; + + for (i = 0; i < len; i++) { + u8 data; + + /* activate RE line */ + __raw_writel(RB750_NAND_NRE, base + AR71XX_GPIO_REG_CLEAR); + /* flush write */ + __raw_readl(base + AR71XX_GPIO_REG_CLEAR); + + /* read input lines */ + data = __raw_readl(base + AR71XX_GPIO_REG_IN) >> + RB750_NAND_DATA_SHIFT; + + /* deactivate RE line */ + __raw_writel(RB750_NAND_NRE, base + AR71XX_GPIO_REG_SET); + + if (read_buf) + read_buf[i] = data; + else if (verify_buf && verify_buf[i] != data) + return -EFAULT; + } + + return 0; +} + +static void rb750_nand_select_chip(struct mtd_info *mtd, int chip) +{ + struct rb750_nand_info *rbinfo = mtd_to_rbinfo(mtd); + void __iomem *base = ath79_gpio_base; + u32 t; + + if (chip >= 0) { + rbinfo->pdata->enable_pins(); + + /* set input mode for data lines */ + t = __raw_readl(base + AR71XX_GPIO_REG_OE); + __raw_writel(t & ~RB750_NAND_INPUT_BITS, + base + AR71XX_GPIO_REG_OE); + + /* deactivate RE and WE lines */ + __raw_writel(RB750_NAND_NRE | RB750_NAND_NWE, + base + AR71XX_GPIO_REG_SET); + /* flush write */ + (void) __raw_readl(base + AR71XX_GPIO_REG_SET); + + /* activate CE line */ + __raw_writel(rbinfo->pdata->nce_line, + base + AR71XX_GPIO_REG_CLEAR); + } else { + /* deactivate CE line */ + __raw_writel(rbinfo->pdata->nce_line, + base + AR71XX_GPIO_REG_SET); + /* flush write */ + (void) __raw_readl(base + AR71XX_GPIO_REG_SET); + + t = __raw_readl(base + AR71XX_GPIO_REG_OE); + __raw_writel(t | RB750_NAND_IO0 | RB750_NAND_RDY, + base + AR71XX_GPIO_REG_OE); + + rbinfo->pdata->disable_pins(); + } +} + +static int rb750_nand_dev_ready(struct mtd_info *mtd) +{ + void __iomem *base = ath79_gpio_base; + + return !!(__raw_readl(base + AR71XX_GPIO_REG_IN) & RB750_NAND_RDY); +} + +static void rb750_nand_cmd_ctrl(struct mtd_info *mtd, int cmd, + unsigned int ctrl) +{ + if (ctrl & NAND_CTRL_CHANGE) { + void __iomem *base = ath79_gpio_base; + u32 t; + + t = __raw_readl(base + AR71XX_GPIO_REG_OUT); + + t &= ~(RB750_NAND_CLE | RB750_NAND_ALE); + t |= (ctrl & NAND_CLE) ? RB750_NAND_CLE : 0; + t |= (ctrl & NAND_ALE) ? RB750_NAND_ALE : 0; + + __raw_writel(t, base + AR71XX_GPIO_REG_OUT); + /* flush write */ + __raw_readl(base + AR71XX_GPIO_REG_OUT); + } + + if (cmd != NAND_CMD_NONE) { + u8 t = cmd; + rb750_nand_write(&t, 1); + } +} + +static u8 rb750_nand_read_byte(struct mtd_info *mtd) +{ + u8 data = 0; + rb750_nand_read_verify(&data, 1, NULL); + return data; +} + +static void rb750_nand_read_buf(struct mtd_info *mtd, u8 *buf, int len) +{ + rb750_nand_read_verify(buf, len, NULL); +} + +static void rb750_nand_write_buf(struct mtd_info *mtd, const u8 *buf, int len) +{ + rb750_nand_write(buf, len); +} + +static int rb750_nand_verify_buf(struct mtd_info *mtd, const u8 *buf, int len) +{ + return rb750_nand_read_verify(NULL, len, buf); +} + +static void __init rb750_nand_gpio_init(struct rb750_nand_info *info) +{ + void __iomem *base = ath79_gpio_base; + u32 out; + u32 t; + + out = __raw_readl(base + AR71XX_GPIO_REG_OUT); + + /* setup output levels */ + __raw_writel(RB750_NAND_NCE | RB750_NAND_NRE | RB750_NAND_NWE, + base + AR71XX_GPIO_REG_SET); + + __raw_writel(RB750_NAND_ALE | RB750_NAND_CLE, + base + AR71XX_GPIO_REG_CLEAR); + + /* setup input lines */ + t = __raw_readl(base + AR71XX_GPIO_REG_OE); + __raw_writel(t & ~(RB750_NAND_INPUT_BITS), base + AR71XX_GPIO_REG_OE); + + /* setup output lines */ + t = __raw_readl(base + AR71XX_GPIO_REG_OE); + t |= RB750_NAND_OUTPUT_BITS; + t |= info->pdata->nce_line; + __raw_writel(t, base + AR71XX_GPIO_REG_OE); + + info->pdata->latch_change(~out & RB750_NAND_IO0, out & RB750_NAND_IO0); +} + +static int __devinit rb750_nand_probe(struct platform_device *pdev) +{ + struct rb750_nand_info *info; + struct rb7xx_nand_platform_data *pdata; + int ret; + + printk(KERN_INFO DRV_DESC " version " DRV_VERSION "\n"); + + pdata = pdev->dev.platform_data; + if (!pdata) + return -EINVAL; + + info = kzalloc(sizeof(*info), GFP_KERNEL); + if (!info) + return -ENOMEM; + + info->chip.priv = &info; + info->mtd.priv = &info->chip; + info->mtd.owner = THIS_MODULE; + + info->chip.select_chip = rb750_nand_select_chip; + info->chip.cmd_ctrl = rb750_nand_cmd_ctrl; + info->chip.dev_ready = rb750_nand_dev_ready; + info->chip.read_byte = rb750_nand_read_byte; + info->chip.write_buf = rb750_nand_write_buf; + info->chip.read_buf = rb750_nand_read_buf; + info->chip.verify_buf = rb750_nand_verify_buf; + + info->chip.chip_delay = 25; + info->chip.ecc.mode = NAND_ECC_SOFT; + info->chip.options |= NAND_NO_AUTOINCR; + + info->pdata = pdata; + + platform_set_drvdata(pdev, info); + + rb750_nand_gpio_init(info); + + ret = nand_scan_ident(&info->mtd, 1, NULL); + if (ret) { + ret = -ENXIO; + goto err_free_info; + } + + if (info->mtd.writesize == 512) + info->chip.ecc.layout = &rb750_nand_ecclayout; + + ret = nand_scan_tail(&info->mtd); + if (ret) { + return -ENXIO; + goto err_set_drvdata; + } + + ret = mtd_device_register(&info->mtd, rb750_nand_partitions, + ARRAY_SIZE(rb750_nand_partitions)); + if (ret) + goto err_release_nand; + + return 0; + +err_release_nand: + nand_release(&info->mtd); +err_set_drvdata: + platform_set_drvdata(pdev, NULL); +err_free_info: + kfree(info); + return ret; +} + +static int __devexit rb750_nand_remove(struct platform_device *pdev) +{ + struct rb750_nand_info *info = platform_get_drvdata(pdev); + + nand_release(&info->mtd); + platform_set_drvdata(pdev, NULL); + kfree(info); + + return 0; +} + +static struct platform_driver rb750_nand_driver = { + .probe = rb750_nand_probe, + .remove = __devexit_p(rb750_nand_remove), + .driver = { + .name = DRV_NAME, + .owner = THIS_MODULE, + }, +}; + +static int __init rb750_nand_init(void) +{ + return platform_driver_register(&rb750_nand_driver); +} + +static void __exit rb750_nand_exit(void) +{ + platform_driver_unregister(&rb750_nand_driver); +} + +module_init(rb750_nand_init); +module_exit(rb750_nand_exit); + +MODULE_DESCRIPTION(DRV_DESC); +MODULE_VERSION(DRV_VERSION); +MODULE_AUTHOR("Gabor Juhos <juhosg@openwrt.org>"); +MODULE_LICENSE("GPL v2"); diff --git a/target/linux/ar71xx/files/drivers/mtd/tplinkpart.c b/target/linux/ar71xx/files/drivers/mtd/tplinkpart.c new file mode 100644 index 000000000..674df6602 --- /dev/null +++ b/target/linux/ar71xx/files/drivers/mtd/tplinkpart.c @@ -0,0 +1,197 @@ +/* + * Copyright (C) 2011 Gabor Juhos <juhosg@openwrt.org> + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License version 2 as published + * by the Free Software Foundation. + * + */ + +#include <linux/kernel.h> +#include <linux/module.h> +#include <linux/slab.h> +#include <linux/vmalloc.h> +#include <linux/magic.h> + +#include <linux/mtd/mtd.h> +#include <linux/mtd/partitions.h> + +#define TPLINK_NUM_PARTS 5 +#define TPLINK_HEADER_V1 0x01000000 +#define MD5SUM_LEN 16 + +#define TPLINK_ART_LEN 0x10000 +#define TPLINK_KERNEL_OFFS 0x20000 + +struct tplink_fw_header { + uint32_t version; /* header version */ + char vendor_name[24]; + char fw_version[36]; + uint32_t hw_id; /* hardware id */ + uint32_t hw_rev; /* hardware revision */ + uint32_t unk1; + uint8_t md5sum1[MD5SUM_LEN]; + uint32_t unk2; + uint8_t md5sum2[MD5SUM_LEN]; + uint32_t unk3; + uint32_t kernel_la; /* kernel load address */ + uint32_t kernel_ep; /* kernel entry point */ + uint32_t fw_length; /* total length of the firmware */ + uint32_t kernel_ofs; /* kernel data offset */ + uint32_t kernel_len; /* kernel data length */ + uint32_t rootfs_ofs; /* rootfs data offset */ + uint32_t rootfs_len; /* rootfs data length */ + uint32_t boot_ofs; /* bootloader data offset */ + uint32_t boot_len; /* bootloader data length */ + uint8_t pad[360]; +} __attribute__ ((packed)); + +static struct tplink_fw_header * +tplink_read_header(struct mtd_info *mtd, size_t offset) +{ + struct tplink_fw_header *header; + size_t header_len; + size_t retlen; + int ret; + u32 t; + + header = vmalloc(sizeof(*header)); + if (!header) + goto err; + + header_len = sizeof(struct tplink_fw_header); + ret = mtd->read(mtd, offset, header_len, &retlen, + (unsigned char *) header); + if (ret) + goto err_free_header; + + if (retlen != header_len) + goto err_free_header; + + /* sanity checks */ + t = be32_to_cpu(header->version); + if (t != TPLINK_HEADER_V1) + goto err_free_header; + + t = be32_to_cpu(header->kernel_ofs); + if (t != header_len) + goto err_free_header; + + return header; + +err_free_header: + vfree(header); +err: + return NULL; +} + +static int tplink_check_rootfs_magic(struct mtd_info *mtd, size_t offset) +{ + u32 magic; + size_t retlen; + int ret; + + ret = mtd->read(mtd, offset, sizeof(magic), &retlen, + (unsigned char *) &magic); + if (ret) + return ret; + + if (retlen != sizeof(magic)) + return -EIO; + + if (le32_to_cpu(magic) != SQUASHFS_MAGIC && + magic != 0x19852003) + return -EINVAL; + + return 0; +} + +static int tplink_parse_partitions(struct mtd_info *master, + struct mtd_partition **pparts, + struct mtd_part_parser_data *data) +{ + struct mtd_partition *parts; + struct tplink_fw_header *header; + int nr_parts; + size_t offset; + size_t art_offset; + size_t rootfs_offset; + size_t squashfs_offset; + int ret; + + nr_parts = TPLINK_NUM_PARTS; + parts = kzalloc(nr_parts * sizeof(struct mtd_partition), GFP_KERNEL); + if (!parts) { + ret = -ENOMEM; + goto err; + } + + offset = TPLINK_KERNEL_OFFS; + + header = tplink_read_header(master, offset); + if (!header) { + pr_notice("%s: no TP-Link header found\n", master->name); + ret = -ENODEV; + goto err_free_parts; + } + + squashfs_offset = offset + sizeof(struct tplink_fw_header) + + be32_to_cpu(header->kernel_len); + + ret = tplink_check_rootfs_magic(master, squashfs_offset); + if (ret == 0) + rootfs_offset = squashfs_offset; + else + rootfs_offset = offset + be32_to_cpu(header->rootfs_ofs); + + art_offset = master->size - TPLINK_ART_LEN; + + parts[0].name = "u-boot"; + parts[0].offset = 0; + parts[0].size = offset; + parts[0].mask_flags = MTD_WRITEABLE; + + parts[1].name = "kernel"; + parts[1].offset = offset; + parts[1].size = rootfs_offset - offset; + + parts[2].name = "rootfs"; + parts[2].offset = rootfs_offset; + parts[2].size = art_offset - rootfs_offset; + + parts[3].name = "art"; + parts[3].offset = art_offset; + parts[3].size = TPLINK_ART_LEN; + parts[3].mask_flags = MTD_WRITEABLE; + + parts[4].name = "firmware"; + parts[4].offset = offset; + parts[4].size = art_offset - offset; + + vfree(header); + + *pparts = parts; + return nr_parts; + +err_free_parts: + kfree(parts); +err: + *pparts = NULL; + return ret; +} + +static struct mtd_part_parser tplink_parser = { + .owner = THIS_MODULE, + .parse_fn = tplink_parse_partitions, + .name = "tp-link", +}; + +static int __init tplink_parser_init(void) +{ + return register_mtd_parser(&tplink_parser); +} + +module_init(tplink_parser_init); + +MODULE_LICENSE("GPL v2"); +MODULE_AUTHOR("Gabor Juhos <juhosg@openwrt.org>"); diff --git a/target/linux/ar71xx/files/drivers/mtd/wrt160nl_part.c b/target/linux/ar71xx/files/drivers/mtd/wrt160nl_part.c new file mode 100644 index 000000000..72927f6f2 --- /dev/null +++ b/target/linux/ar71xx/files/drivers/mtd/wrt160nl_part.c @@ -0,0 +1,205 @@ +/* + * Copyright (C) 2009 Christian Daniel <cd@maintech.de> + * Copyright (C) 2009 Gabor Juhos <juhosg@openwrt.org> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + * + * TRX flash partition table. + * Based on ar7 map by Felix Fietkau <nbd@openwrt.org> + * + */ + +#include <linux/kernel.h> +#include <linux/module.h> +#include <linux/slab.h> +#include <linux/vmalloc.h> + +#include <linux/mtd/mtd.h> +#include <linux/mtd/partitions.h> + +struct cybertan_header { + char magic[4]; + u8 res1[4]; + char fw_date[3]; + char fw_ver[3]; + char id[4]; + char hw_ver; + char unused; + u8 flags[2]; + u8 res2[10]; +}; + +#define TRX_PARTS 6 +#define TRX_MAGIC 0x30524448 +#define TRX_MAX_OFFSET 3 + +struct trx_header { + uint32_t magic; /* "HDR0" */ + uint32_t len; /* Length of file including header */ + uint32_t crc32; /* 32-bit CRC from flag_version to end of file */ + uint32_t flag_version; /* 0:15 flags, 16:31 version */ + uint32_t offsets[TRX_MAX_OFFSET]; /* Offsets of partitions from start of header */ +}; + +#define IH_MAGIC 0x27051956 /* Image Magic Number */ +#define IH_NMLEN 32 /* Image Name Length */ + +struct uimage_header { + uint32_t ih_magic; /* Image Header Magic Number */ + uint32_t ih_hcrc; /* Image Header CRC Checksum */ + uint32_t ih_time; /* Image Creation Timestamp */ + uint32_t ih_size; /* Image Data Size */ + uint32_t ih_load; /* Data» Load Address */ + uint32_t ih_ep; /* Entry Point Address */ + uint32_t ih_dcrc; /* Image Data CRC Checksum */ + uint8_t ih_os; /* Operating System */ + uint8_t ih_arch; /* CPU architecture */ + uint8_t ih_type; /* Image Type */ + uint8_t ih_comp; /* Compression Type */ + uint8_t ih_name[IH_NMLEN]; /* Image Name */ +}; + +struct wrt160nl_header { + struct cybertan_header cybertan; + struct trx_header trx; + struct uimage_header uimage; +} __attribute__ ((packed)); + +#define WRT160NL_UBOOT_LEN 0x40000 +#define WRT160NL_ART_LEN 0x10000 +#define WRT160NL_NVRAM_LEN 0x10000 + +static int wrt160nl_parse_partitions(struct mtd_info *master, + struct mtd_partition **pparts, + struct mtd_part_parser_data *data) +{ + struct wrt160nl_header *header; + struct trx_header *theader; + struct uimage_header *uheader; + struct mtd_partition *trx_parts; + size_t retlen; + unsigned int kernel_len; + unsigned int uboot_len; + unsigned int nvram_len; + unsigned int art_len; + int ret; + + uboot_len = max_t(unsigned int, master->erasesize, WRT160NL_UBOOT_LEN); + nvram_len = max_t(unsigned int, master->erasesize, WRT160NL_NVRAM_LEN); + art_len = max_t(unsigned int, master->erasesize, WRT160NL_ART_LEN); + + trx_parts = kzalloc(TRX_PARTS * sizeof(struct mtd_partition), + GFP_KERNEL); + if (!trx_parts) { + ret = -ENOMEM; + goto out; + } + + header = vmalloc(sizeof(*header)); + if (!header) { + return -ENOMEM; + goto free_parts; + } + + ret = master->read(master, uboot_len, sizeof(*header), + &retlen, (void *) header); + if (ret) + goto free_hdr; + + if (retlen != sizeof(*header)) { + ret = -EIO; + goto free_hdr; + } + + if (strncmp(header->cybertan.magic, "NL16", 4) != 0) { + printk(KERN_NOTICE "%s: no WRT160NL signature found\n", + master->name); + goto free_hdr; + } + + theader = &header->trx; + if (le32_to_cpu(theader->magic) != TRX_MAGIC) { + printk(KERN_NOTICE "%s: no TRX header found\n", master->name); + goto free_hdr; + } + + uheader = &header->uimage; + if (uheader->ih_magic != IH_MAGIC) { + printk(KERN_NOTICE "%s: no uImage found\n", master->name); + goto free_hdr; + } + + kernel_len = le32_to_cpu(theader->offsets[1]) + + sizeof(struct cybertan_header); + + trx_parts[0].name = "u-boot"; + trx_parts[0].offset = 0; + trx_parts[0].size = uboot_len; + trx_parts[0].mask_flags = MTD_WRITEABLE; + + trx_parts[1].name = "kernel"; + trx_parts[1].offset = trx_parts[0].offset + trx_parts[0].size; + trx_parts[1].size = kernel_len; + trx_parts[1].mask_flags = 0; + + trx_parts[2].name = "rootfs"; + trx_parts[2].offset = trx_parts[1].offset + trx_parts[1].size; + trx_parts[2].size = master->size - uboot_len - nvram_len - art_len - + trx_parts[1].size; + trx_parts[2].mask_flags = 0; + + trx_parts[3].name = "nvram"; + trx_parts[3].offset = master->size - nvram_len - art_len; + trx_parts[3].size = nvram_len; + trx_parts[3].mask_flags = MTD_WRITEABLE; + + trx_parts[4].name = "art"; + trx_parts[4].offset = master->size - art_len; + trx_parts[4].size = art_len; + trx_parts[4].mask_flags = MTD_WRITEABLE; + + trx_parts[5].name = "firmware"; + trx_parts[5].offset = uboot_len; + trx_parts[5].size = master->size - uboot_len - nvram_len - art_len; + trx_parts[5].mask_flags = 0; + + vfree(header); + + *pparts = trx_parts; + return TRX_PARTS; + +free_hdr: + vfree(header); +free_parts: + kfree(trx_parts); +out: + return ret; +} + +static struct mtd_part_parser wrt160nl_parser = { + .owner = THIS_MODULE, + .parse_fn = wrt160nl_parse_partitions, + .name = "wrt160nl", +}; + +static int __init wrt160nl_parser_init(void) +{ + return register_mtd_parser(&wrt160nl_parser); +} + +module_init(wrt160nl_parser_init); + +MODULE_LICENSE("GPL"); +MODULE_AUTHOR("Christian Daniel <cd@maintech.de>"); diff --git a/target/linux/ar71xx/files/drivers/net/dsa/mv88e6063.c b/target/linux/ar71xx/files/drivers/net/dsa/mv88e6063.c new file mode 100644 index 000000000..b41eb5481 --- /dev/null +++ b/target/linux/ar71xx/files/drivers/net/dsa/mv88e6063.c @@ -0,0 +1,294 @@ +/* + * net/dsa/mv88e6063.c - Driver for Marvell 88e6063 switch chips + * Copyright (c) 2009 Gabor Juhos <juhosg@openwrt.org> + * + * This driver was base on: net/dsa/mv88e6060.c + * net/dsa/mv88e6063.c - Driver for Marvell 88e6060 switch chips + * Copyright (c) 2008-2009 Marvell Semiconductor + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + */ + +#include <linux/list.h> +#include <linux/netdevice.h> +#include <linux/phy.h> +#include <net/dsa.h> + +#define REG_BASE 0x10 +#define REG_PHY(p) (REG_BASE + (p)) +#define REG_PORT(p) (REG_BASE + 8 + (p)) +#define REG_GLOBAL (REG_BASE + 0x0f) +#define NUM_PORTS 7 + +static int reg_read(struct dsa_switch *ds, int addr, int reg) +{ + return mdiobus_read(ds->master_mii_bus, addr, reg); +} + +#define REG_READ(addr, reg) \ + ({ \ + int __ret; \ + \ + __ret = reg_read(ds, addr, reg); \ + if (__ret < 0) \ + return __ret; \ + __ret; \ + }) + + +static int reg_write(struct dsa_switch *ds, int addr, int reg, u16 val) +{ + return mdiobus_write(ds->master_mii_bus, addr, reg, val); +} + +#define REG_WRITE(addr, reg, val) \ + ({ \ + int __ret; \ + \ + __ret = reg_write(ds, addr, reg, val); \ + if (__ret < 0) \ + return __ret; \ + }) + +static char *mv88e6063_probe(struct mii_bus *bus, int sw_addr) +{ + int ret; + + ret = mdiobus_read(bus, REG_PORT(0), 0x03); + if (ret >= 0) { + ret &= 0xfff0; + if (ret == 0x1530) + return "Marvell 88E6063"; + } + + return NULL; +} + +static int mv88e6063_switch_reset(struct dsa_switch *ds) +{ + int i; + int ret; + + /* + * Set all ports to the disabled state. + */ + for (i = 0; i < NUM_PORTS; i++) { + ret = REG_READ(REG_PORT(i), 0x04); + REG_WRITE(REG_PORT(i), 0x04, ret & 0xfffc); + } + + /* + * Wait for transmit queues to drain. + */ + msleep(2); + + /* + * Reset the switch. + */ + REG_WRITE(REG_GLOBAL, 0x0a, 0xa130); + + /* + * Wait up to one second for reset to complete. + */ + for (i = 0; i < 1000; i++) { + ret = REG_READ(REG_GLOBAL, 0x00); + if ((ret & 0x8000) == 0x0000) + break; + + msleep(1); + } + if (i == 1000) + return -ETIMEDOUT; + + return 0; +} + +static int mv88e6063_setup_global(struct dsa_switch *ds) +{ + /* + * Disable discarding of frames with excessive collisions, + * set the maximum frame size to 1536 bytes, and mask all + * interrupt sources. + */ + REG_WRITE(REG_GLOBAL, 0x04, 0x0800); + + /* + * Enable automatic address learning, set the address + * database size to 1024 entries, and set the default aging + * time to 5 minutes. + */ + REG_WRITE(REG_GLOBAL, 0x0a, 0x2130); + + return 0; +} + +static int mv88e6063_setup_port(struct dsa_switch *ds, int p) +{ + int addr = REG_PORT(p); + + /* + * Do not force flow control, disable Ingress and Egress + * Header tagging, disable VLAN tunneling, and set the port + * state to Forwarding. Additionally, if this is the CPU + * port, enable Ingress and Egress Trailer tagging mode. + */ + REG_WRITE(addr, 0x04, dsa_is_cpu_port(ds, p) ? 0x4103 : 0x0003); + + /* + * Port based VLAN map: give each port its own address + * database, allow the CPU port to talk to each of the 'real' + * ports, and allow each of the 'real' ports to only talk to + * the CPU port. + */ + REG_WRITE(addr, 0x06, + ((p & 0xf) << 12) | + (dsa_is_cpu_port(ds, p) ? + ds->phys_port_mask : + (1 << ds->dst->cpu_port))); + + /* + * Port Association Vector: when learning source addresses + * of packets, add the address to the address database using + * a port bitmap that has only the bit for this port set and + * the other bits clear. + */ + REG_WRITE(addr, 0x0b, 1 << p); + + return 0; +} + +static int mv88e6063_setup(struct dsa_switch *ds) +{ + int i; + int ret; + + ret = mv88e6063_switch_reset(ds); + if (ret < 0) + return ret; + + /* @@@ initialise atu */ + + ret = mv88e6063_setup_global(ds); + if (ret < 0) + return ret; + + for (i = 0; i < NUM_PORTS; i++) { + ret = mv88e6063_setup_port(ds, i); + if (ret < 0) + return ret; + } + + return 0; +} + +static int mv88e6063_set_addr(struct dsa_switch *ds, u8 *addr) +{ + REG_WRITE(REG_GLOBAL, 0x01, (addr[0] << 8) | addr[1]); + REG_WRITE(REG_GLOBAL, 0x02, (addr[2] << 8) | addr[3]); + REG_WRITE(REG_GLOBAL, 0x03, (addr[4] << 8) | addr[5]); + + return 0; +} + +static int mv88e6063_port_to_phy_addr(int port) +{ + if (port >= 0 && port <= NUM_PORTS) + return REG_PHY(port); + return -1; +} + +static int mv88e6063_phy_read(struct dsa_switch *ds, int port, int regnum) +{ + int addr; + + addr = mv88e6063_port_to_phy_addr(port); + if (addr == -1) + return 0xffff; + + return reg_read(ds, addr, regnum); +} + +static int +mv88e6063_phy_write(struct dsa_switch *ds, int port, int regnum, u16 val) +{ + int addr; + + addr = mv88e6063_port_to_phy_addr(port); + if (addr == -1) + return 0xffff; + + return reg_write(ds, addr, regnum, val); +} + +static void mv88e6063_poll_link(struct dsa_switch *ds) +{ + int i; + + for (i = 0; i < DSA_MAX_PORTS; i++) { + struct net_device *dev; + int uninitialized_var(port_status); + int link; + int speed; + int duplex; + int fc; + + dev = ds->ports[i]; + if (dev == NULL) + continue; + + link = 0; + if (dev->flags & IFF_UP) { + port_status = reg_read(ds, REG_PORT(i), 0x00); + if (port_status < 0) + continue; + + link = !!(port_status & 0x1000); + } + + if (!link) { + if (netif_carrier_ok(dev)) { + printk(KERN_INFO "%s: link down\n", dev->name); + netif_carrier_off(dev); + } + continue; + } + + speed = (port_status & 0x0100) ? 100 : 10; + duplex = (port_status & 0x0200) ? 1 : 0; + fc = ((port_status & 0xc000) == 0xc000) ? 1 : 0; + + if (!netif_carrier_ok(dev)) { + printk(KERN_INFO "%s: link up, %d Mb/s, %s duplex, " + "flow control %sabled\n", dev->name, + speed, duplex ? "full" : "half", + fc ? "en" : "dis"); + netif_carrier_on(dev); + } + } +} + +static struct dsa_switch_driver mv88e6063_switch_driver = { + .tag_protocol = htons(ETH_P_TRAILER), + .probe = mv88e6063_probe, + .setup = mv88e6063_setup, + .set_addr = mv88e6063_set_addr, + .phy_read = mv88e6063_phy_read, + .phy_write = mv88e6063_phy_write, + .poll_link = mv88e6063_poll_link, +}; + +static int __init mv88e6063_init(void) +{ + register_switch_driver(&mv88e6063_switch_driver); + return 0; +} +module_init(mv88e6063_init); + +static void __exit mv88e6063_cleanup(void) +{ + unregister_switch_driver(&mv88e6063_switch_driver); +} +module_exit(mv88e6063_cleanup); diff --git a/target/linux/ar71xx/files/drivers/net/ethernet/atheros/ag71xx/Kconfig b/target/linux/ar71xx/files/drivers/net/ethernet/atheros/ag71xx/Kconfig new file mode 100644 index 000000000..42d544f73 --- /dev/null +++ b/target/linux/ar71xx/files/drivers/net/ethernet/atheros/ag71xx/Kconfig @@ -0,0 +1,33 @@ +config AG71XX + tristate "Atheros AR7XXX/AR9XXX built-in ethernet mac support" + depends on ATH79 + select PHYLIB + help + If you wish to compile a kernel for AR7XXX/91XXX and enable + ethernet support, then you should always answer Y to this. + +if AG71XX + +config AG71XX_DEBUG + bool "Atheros AR71xx built-in ethernet driver debugging" + default n + help + Atheros AR71xx built-in ethernet driver debugging messages. + +config AG71XX_DEBUG_FS + bool "Atheros AR71xx built-in ethernet driver debugfs support" + depends on DEBUG_FS + default n + help + Say Y, if you need access to various statistics provided by + the ag71xx driver. + +config AG71XX_AR8216_SUPPORT + bool "special support for the Atheros AR8216 switch" + default n + default y if ATH79_MACH_WNR2000 || ATH79_MACH_MZK_W04NU + help + Say 'y' here if you want to enable special support for the + Atheros AR8216 switch found on some boards. + +endif diff --git a/target/linux/ar71xx/files/drivers/net/ethernet/atheros/ag71xx/Makefile b/target/linux/ar71xx/files/drivers/net/ethernet/atheros/ag71xx/Makefile new file mode 100644 index 000000000..b3ec4084c --- /dev/null +++ b/target/linux/ar71xx/files/drivers/net/ethernet/atheros/ag71xx/Makefile @@ -0,0 +1,15 @@ +# +# Makefile for the Atheros AR71xx built-in ethernet macs +# + +ag71xx-y += ag71xx_main.o +ag71xx-y += ag71xx_ethtool.o +ag71xx-y += ag71xx_phy.o +ag71xx-y += ag71xx_mdio.o +ag71xx-y += ag71xx_ar7240.o + +ag71xx-$(CONFIG_AG71XX_DEBUG_FS) += ag71xx_debugfs.o +ag71xx-$(CONFIG_AG71XX_AR8216_SUPPORT) += ag71xx_ar8216.o + +obj-$(CONFIG_AG71XX) += ag71xx.o + diff --git a/target/linux/ar71xx/files/drivers/net/ethernet/atheros/ag71xx/ag71xx.h b/target/linux/ar71xx/files/drivers/net/ethernet/atheros/ag71xx/ag71xx.h new file mode 100644 index 000000000..b9d95adaf --- /dev/null +++ b/target/linux/ar71xx/files/drivers/net/ethernet/atheros/ag71xx/ag71xx.h @@ -0,0 +1,477 @@ +/* + * Atheros AR71xx built-in ethernet mac driver + * + * Copyright (C) 2008-2010 Gabor Juhos <juhosg@openwrt.org> + * Copyright (C) 2008 Imre Kaloz <kaloz@openwrt.org> + * + * Based on Atheros' AG7100 driver + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License version 2 as published + * by the Free Software Foundation. + */ + +#ifndef __AG71XX_H +#define __AG71XX_H + +#include <linux/kernel.h> +#include <linux/version.h> +#include <linux/module.h> +#include <linux/init.h> +#include <linux/types.h> +#include <linux/random.h> +#include <linux/spinlock.h> +#include <linux/interrupt.h> +#include <linux/platform_device.h> +#include <linux/ethtool.h> +#include <linux/etherdevice.h> +#include <linux/if_vlan.h> +#include <linux/phy.h> +#include <linux/skbuff.h> +#include <linux/dma-mapping.h> +#include <linux/workqueue.h> + +#include <linux/bitops.h> + +#include <asm/mach-ath79/ar71xx_regs.h> +#include <asm/mach-ath79/ath79.h> +#include <asm/mach-ath79/ag71xx_platform.h> + +#define AG71XX_DRV_NAME "ag71xx" +#define AG71XX_DRV_VERSION "0.5.35" + +#define AG71XX_NAPI_WEIGHT 64 +#define AG71XX_OOM_REFILL (1 + HZ/10) + +#define AG71XX_INT_ERR (AG71XX_INT_RX_BE | AG71XX_INT_TX_BE) +#define AG71XX_INT_TX (AG71XX_INT_TX_PS) +#define AG71XX_INT_RX (AG71XX_INT_RX_PR | AG71XX_INT_RX_OF) + +#define AG71XX_INT_POLL (AG71XX_INT_RX | AG71XX_INT_TX) +#define AG71XX_INT_INIT (AG71XX_INT_ERR | AG71XX_INT_POLL) + +#define AG71XX_TX_MTU_LEN 1540 +#define AG71XX_RX_PKT_SIZE \ + (ETH_FRAME_LEN + ETH_FCS_LEN + VLAN_HLEN) +#define AG71XX_RX_BUF_SIZE (AG71XX_RX_PKT_SIZE + NET_SKB_PAD + NET_IP_ALIGN) + +#define AG71XX_TX_RING_SIZE_DEFAULT 64 +#define AG71XX_RX_RING_SIZE_DEFAULT 128 + +#define AG71XX_TX_RING_SIZE_MAX 256 +#define AG71XX_RX_RING_SIZE_MAX 256 + +#ifdef CONFIG_AG71XX_DEBUG +#define DBG(fmt, args...) pr_debug(fmt, ## args) +#else +#define DBG(fmt, args...) do {} while (0) +#endif + +#define ag71xx_assert(_cond) \ +do { \ + if (_cond) \ + break; \ + printk("%s,%d: assertion failed\n", __FILE__, __LINE__); \ + BUG(); \ +} while (0) + +struct ag71xx_desc { + u32 data; + u32 ctrl; +#define DESC_EMPTY BIT(31) +#define DESC_MORE BIT(24) +#define DESC_PKTLEN_M 0xfff + u32 next; + u32 pad; +} __attribute__((aligned(4))); + +struct ag71xx_buf { + union { + struct sk_buff *skb; + void *rx_buf; + }; + struct ag71xx_desc *desc; + dma_addr_t dma_addr; + unsigned long timestamp; +}; + +struct ag71xx_ring { + struct ag71xx_buf *buf; + u8 *descs_cpu; + dma_addr_t descs_dma; + unsigned int desc_size; + unsigned int curr; + unsigned int dirty; + unsigned int size; +}; + +struct ag71xx_mdio { + struct mii_bus *mii_bus; + int mii_irq[PHY_MAX_ADDR]; + void __iomem *mdio_base; + struct ag71xx_mdio_platform_data *pdata; +}; + +struct ag71xx_int_stats { + unsigned long rx_pr; + unsigned long rx_be; + unsigned long rx_of; + unsigned long tx_ps; + unsigned long tx_be; + unsigned long tx_ur; + unsigned long total; +}; + +struct ag71xx_napi_stats { + unsigned long napi_calls; + unsigned long rx_count; + unsigned long rx_packets; + unsigned long rx_packets_max; + unsigned long tx_count; + unsigned long tx_packets; + unsigned long tx_packets_max; + + unsigned long rx[AG71XX_NAPI_WEIGHT + 1]; + unsigned long tx[AG71XX_NAPI_WEIGHT + 1]; +}; + +struct ag71xx_debug { + struct dentry *debugfs_dir; + + struct ag71xx_int_stats int_stats; + struct ag71xx_napi_stats napi_stats; +}; + +struct ag71xx { + void __iomem *mac_base; + + spinlock_t lock; + struct platform_device *pdev; + struct net_device *dev; + struct napi_struct napi; + u32 msg_enable; + + struct ag71xx_desc *stop_desc; + dma_addr_t stop_desc_dma; + + struct ag71xx_ring rx_ring; + struct ag71xx_ring tx_ring; + + struct mii_bus *mii_bus; + struct phy_device *phy_dev; + void *phy_priv; + + unsigned int link; + unsigned int speed; + int duplex; + + struct work_struct restart_work; + struct delayed_work link_work; + struct timer_list oom_timer; + +#ifdef CONFIG_AG71XX_DEBUG_FS + struct ag71xx_debug debug; +#endif +}; + +extern struct ethtool_ops ag71xx_ethtool_ops; +void ag71xx_link_adjust(struct ag71xx *ag); + +int ag71xx_mdio_driver_init(void) __init; +void ag71xx_mdio_driver_exit(void); + +int ag71xx_phy_connect(struct ag71xx *ag); +void ag71xx_phy_disconnect(struct ag71xx *ag); +void ag71xx_phy_start(struct ag71xx *ag); +void ag71xx_phy_stop(struct ag71xx *ag); + +static inline struct ag71xx_platform_data *ag71xx_get_pdata(struct ag71xx *ag) +{ + return ag->pdev->dev.platform_data; +} + +static inline int ag71xx_desc_empty(struct ag71xx_desc *desc) +{ + return (desc->ctrl & DESC_EMPTY) != 0; +} + +static inline int ag71xx_desc_pktlen(struct ag71xx_desc *desc) +{ + return desc->ctrl & DESC_PKTLEN_M; +} + +/* Register offsets */ +#define AG71XX_REG_MAC_CFG1 0x0000 +#define AG71XX_REG_MAC_CFG2 0x0004 +#define AG71XX_REG_MAC_IPG 0x0008 +#define AG71XX_REG_MAC_HDX 0x000c +#define AG71XX_REG_MAC_MFL 0x0010 +#define AG71XX_REG_MII_CFG 0x0020 +#define AG71XX_REG_MII_CMD 0x0024 +#define AG71XX_REG_MII_ADDR 0x0028 +#define AG71XX_REG_MII_CTRL 0x002c +#define AG71XX_REG_MII_STATUS 0x0030 +#define AG71XX_REG_MII_IND 0x0034 +#define AG71XX_REG_MAC_IFCTL 0x0038 +#define AG71XX_REG_MAC_ADDR1 0x0040 +#define AG71XX_REG_MAC_ADDR2 0x0044 +#define AG71XX_REG_FIFO_CFG0 0x0048 +#define AG71XX_REG_FIFO_CFG1 0x004c +#define AG71XX_REG_FIFO_CFG2 0x0050 +#define AG71XX_REG_FIFO_CFG3 0x0054 +#define AG71XX_REG_FIFO_CFG4 0x0058 +#define AG71XX_REG_FIFO_CFG5 0x005c +#define AG71XX_REG_FIFO_RAM0 0x0060 +#define AG71XX_REG_FIFO_RAM1 0x0064 +#define AG71XX_REG_FIFO_RAM2 0x0068 +#define AG71XX_REG_FIFO_RAM3 0x006c +#define AG71XX_REG_FIFO_RAM4 0x0070 +#define AG71XX_REG_FIFO_RAM5 0x0074 +#define AG71XX_REG_FIFO_RAM6 0x0078 +#define AG71XX_REG_FIFO_RAM7 0x007c + +#define AG71XX_REG_TX_CTRL 0x0180 +#define AG71XX_REG_TX_DESC 0x0184 +#define AG71XX_REG_TX_STATUS 0x0188 +#define AG71XX_REG_RX_CTRL 0x018c +#define AG71XX_REG_RX_DESC 0x0190 +#define AG71XX_REG_RX_STATUS 0x0194 +#define AG71XX_REG_INT_ENABLE 0x0198 +#define AG71XX_REG_INT_STATUS 0x019c + +#define AG71XX_REG_FIFO_DEPTH 0x01a8 +#define AG71XX_REG_RX_SM 0x01b0 +#define AG71XX_REG_TX_SM 0x01b4 + +#define MAC_CFG1_TXE BIT(0) /* Tx Enable */ +#define MAC_CFG1_STX BIT(1) /* Synchronize Tx Enable */ +#define MAC_CFG1_RXE BIT(2) /* Rx Enable */ +#define MAC_CFG1_SRX BIT(3) /* Synchronize Rx Enable */ +#define MAC_CFG1_TFC BIT(4) /* Tx Flow Control Enable */ +#define MAC_CFG1_RFC BIT(5) /* Rx Flow Control Enable */ +#define MAC_CFG1_LB BIT(8) /* Loopback mode */ +#define MAC_CFG1_SR BIT(31) /* Soft Reset */ + +#define MAC_CFG2_FDX BIT(0) +#define MAC_CFG2_CRC_EN BIT(1) +#define MAC_CFG2_PAD_CRC_EN BIT(2) +#define MAC_CFG2_LEN_CHECK BIT(4) +#define MAC_CFG2_HUGE_FRAME_EN BIT(5) +#define MAC_CFG2_IF_1000 BIT(9) +#define MAC_CFG2_IF_10_100 BIT(8) + +#define FIFO_CFG0_WTM BIT(0) /* Watermark Module */ +#define FIFO_CFG0_RXS BIT(1) /* Rx System Module */ +#define FIFO_CFG0_RXF BIT(2) /* Rx Fabric Module */ +#define FIFO_CFG0_TXS BIT(3) /* Tx System Module */ +#define FIFO_CFG0_TXF BIT(4) /* Tx Fabric Module */ +#define FIFO_CFG0_ALL (FIFO_CFG0_WTM | FIFO_CFG0_RXS | FIFO_CFG0_RXF \ + | FIFO_CFG0_TXS | FIFO_CFG0_TXF) + +#define FIFO_CFG0_ENABLE_SHIFT 8 + +#define FIFO_CFG4_DE BIT(0) /* Drop Event */ +#define FIFO_CFG4_DV BIT(1) /* RX_DV Event */ +#define FIFO_CFG4_FC BIT(2) /* False Carrier */ +#define FIFO_CFG4_CE BIT(3) /* Code Error */ +#define FIFO_CFG4_CR BIT(4) /* CRC error */ +#define FIFO_CFG4_LM BIT(5) /* Length Mismatch */ +#define FIFO_CFG4_LO BIT(6) /* Length out of range */ +#define FIFO_CFG4_OK BIT(7) /* Packet is OK */ +#define FIFO_CFG4_MC BIT(8) /* Multicast Packet */ +#define FIFO_CFG4_BC BIT(9) /* Broadcast Packet */ +#define FIFO_CFG4_DR BIT(10) /* Dribble */ +#define FIFO_CFG4_LE BIT(11) /* Long Event */ +#define FIFO_CFG4_CF BIT(12) /* Control Frame */ +#define FIFO_CFG4_PF BIT(13) /* Pause Frame */ +#define FIFO_CFG4_UO BIT(14) /* Unsupported Opcode */ +#define FIFO_CFG4_VT BIT(15) /* VLAN tag detected */ +#define FIFO_CFG4_FT BIT(16) /* Frame Truncated */ +#define FIFO_CFG4_UC BIT(17) /* Unicast Packet */ + +#define FIFO_CFG5_DE BIT(0) /* Drop Event */ +#define FIFO_CFG5_DV BIT(1) /* RX_DV Event */ +#define FIFO_CFG5_FC BIT(2) /* False Carrier */ +#define FIFO_CFG5_CE BIT(3) /* Code Error */ +#define FIFO_CFG5_LM BIT(4) /* Length Mismatch */ +#define FIFO_CFG5_LO BIT(5) /* Length Out of Range */ +#define FIFO_CFG5_OK BIT(6) /* Packet is OK */ +#define FIFO_CFG5_MC BIT(7) /* Multicast Packet */ +#define FIFO_CFG5_BC BIT(8) /* Broadcast Packet */ +#define FIFO_CFG5_DR BIT(9) /* Dribble */ +#define FIFO_CFG5_CF BIT(10) /* Control Frame */ +#define FIFO_CFG5_PF BIT(11) /* Pause Frame */ +#define FIFO_CFG5_UO BIT(12) /* Unsupported Opcode */ +#define FIFO_CFG5_VT BIT(13) /* VLAN tag detected */ +#define FIFO_CFG5_LE BIT(14) /* Long Event */ +#define FIFO_CFG5_FT BIT(15) /* Frame Truncated */ +#define FIFO_CFG5_16 BIT(16) /* unknown */ +#define FIFO_CFG5_17 BIT(17) /* unknown */ +#define FIFO_CFG5_SF BIT(18) /* Short Frame */ +#define FIFO_CFG5_BM BIT(19) /* Byte Mode */ + +#define AG71XX_INT_TX_PS BIT(0) +#define AG71XX_INT_TX_UR BIT(1) +#define AG71XX_INT_TX_BE BIT(3) +#define AG71XX_INT_RX_PR BIT(4) +#define AG71XX_INT_RX_OF BIT(6) +#define AG71XX_INT_RX_BE BIT(7) + +#define MAC_IFCTL_SPEED BIT(16) + +#define MII_CFG_CLK_DIV_4 0 +#define MII_CFG_CLK_DIV_6 2 +#define MII_CFG_CLK_DIV_8 3 +#define MII_CFG_CLK_DIV_10 4 +#define MII_CFG_CLK_DIV_14 5 +#define MII_CFG_CLK_DIV_20 6 +#define MII_CFG_CLK_DIV_28 7 +#define MII_CFG_CLK_DIV_34 8 +#define MII_CFG_CLK_DIV_42 9 +#define MII_CFG_CLK_DIV_50 10 +#define MII_CFG_CLK_DIV_58 11 +#define MII_CFG_CLK_DIV_66 12 +#define MII_CFG_CLK_DIV_74 13 +#define MII_CFG_CLK_DIV_82 14 +#define MII_CFG_CLK_DIV_98 15 +#define MII_CFG_RESET BIT(31) + +#define MII_CMD_WRITE 0x0 +#define MII_CMD_READ 0x1 +#define MII_ADDR_SHIFT 8 +#define MII_IND_BUSY BIT(0) +#define MII_IND_INVALID BIT(2) + +#define TX_CTRL_TXE BIT(0) /* Tx Enable */ + +#define TX_STATUS_PS BIT(0) /* Packet Sent */ +#define TX_STATUS_UR BIT(1) /* Tx Underrun */ +#define TX_STATUS_BE BIT(3) /* Bus Error */ + +#define RX_CTRL_RXE BIT(0) /* Rx Enable */ + +#define RX_STATUS_PR BIT(0) /* Packet Received */ +#define RX_STATUS_OF BIT(2) /* Rx Overflow */ +#define RX_STATUS_BE BIT(3) /* Bus Error */ + +static inline void ag71xx_check_reg_offset(struct ag71xx *ag, unsigned reg) +{ + switch (reg) { + case AG71XX_REG_MAC_CFG1 ... AG71XX_REG_MAC_MFL: + case AG71XX_REG_MAC_IFCTL ... AG71XX_REG_TX_SM: + case AG71XX_REG_MII_CFG: + break; + + default: + BUG(); + } +} + +static inline void ag71xx_wr(struct ag71xx *ag, unsigned reg, u32 value) +{ + ag71xx_check_reg_offset(ag, reg); + + __raw_writel(value, ag->mac_base + reg); + /* flush write */ + (void) __raw_readl(ag->mac_base + reg); +} + +static inline u32 ag71xx_rr(struct ag71xx *ag, unsigned reg) +{ + ag71xx_check_reg_offset(ag, reg); + + return __raw_readl(ag->mac_base + reg); +} + +static inline void ag71xx_sb(struct ag71xx *ag, unsigned reg, u32 mask) +{ + void __iomem *r; + + ag71xx_check_reg_offset(ag, reg); + + r = ag->mac_base + reg; + __raw_writel(__raw_readl(r) | mask, r); + /* flush write */ + (void)__raw_readl(r); +} + +static inline void ag71xx_cb(struct ag71xx *ag, unsigned reg, u32 mask) +{ + void __iomem *r; + + ag71xx_check_reg_offset(ag, reg); + + r = ag->mac_base + reg; + __raw_writel(__raw_readl(r) & ~mask, r); + /* flush write */ + (void) __raw_readl(r); +} + +static inline void ag71xx_int_enable(struct ag71xx *ag, u32 ints) +{ + ag71xx_sb(ag, AG71XX_REG_INT_ENABLE, ints); +} + +static inline void ag71xx_int_disable(struct ag71xx *ag, u32 ints) +{ + ag71xx_cb(ag, AG71XX_REG_INT_ENABLE, ints); +} + +#ifdef CONFIG_AG71XX_AR8216_SUPPORT +void ag71xx_add_ar8216_header(struct ag71xx *ag, struct sk_buff *skb); +int ag71xx_remove_ar8216_header(struct ag71xx *ag, struct sk_buff *skb, + int pktlen); +static inline int ag71xx_has_ar8216(struct ag71xx *ag) +{ + return ag71xx_get_pdata(ag)->has_ar8216; +} +#else +static inline void ag71xx_add_ar8216_header(struct ag71xx *ag, + struct sk_buff *skb) +{ +} + +static inline int ag71xx_remove_ar8216_header(struct ag71xx *ag, + struct sk_buff *skb, + int pktlen) +{ + return 0; +} +static inline int ag71xx_has_ar8216(struct ag71xx *ag) +{ + return 0; +} +#endif + +#ifdef CONFIG_AG71XX_DEBUG_FS +int ag71xx_debugfs_root_init(void); +void ag71xx_debugfs_root_exit(void); +int ag71xx_debugfs_init(struct ag71xx *ag); +void ag71xx_debugfs_exit(struct ag71xx *ag); +void ag71xx_debugfs_update_int_stats(struct ag71xx *ag, u32 status); +void ag71xx_debugfs_update_napi_stats(struct ag71xx *ag, int rx, int tx); +#else +static inline int ag71xx_debugfs_root_init(void) { return 0; } +static inline void ag71xx_debugfs_root_exit(void) {} +static inline int ag71xx_debugfs_init(struct ag71xx *ag) { return 0; } +static inline void ag71xx_debugfs_exit(struct ag71xx *ag) {} +static inline void ag71xx_debugfs_update_int_stats(struct ag71xx *ag, + u32 status) {} +static inline void ag71xx_debugfs_update_napi_stats(struct ag71xx *ag, + int rx, int tx) {} +#endif /* CONFIG_AG71XX_DEBUG_FS */ + +void ag71xx_ar7240_start(struct ag71xx *ag); +void ag71xx_ar7240_stop(struct ag71xx *ag); +int ag71xx_ar7240_init(struct ag71xx *ag); +void ag71xx_ar7240_cleanup(struct ag71xx *ag); + +int ag71xx_mdio_mii_read(struct ag71xx_mdio *am, int addr, int reg); +void ag71xx_mdio_mii_write(struct ag71xx_mdio *am, int addr, int reg, u16 val); + +u16 ar7240sw_phy_read(struct mii_bus *mii, unsigned phy_addr, + unsigned reg_addr); +int ar7240sw_phy_write(struct mii_bus *mii, unsigned phy_addr, + unsigned reg_addr, u16 reg_val); + +#endif /* _AG71XX_H */ diff --git a/target/linux/ar71xx/files/drivers/net/ethernet/atheros/ag71xx/ag71xx_ar7240.c b/target/linux/ar71xx/files/drivers/net/ethernet/atheros/ag71xx/ag71xx_ar7240.c new file mode 100644 index 000000000..49f077520 --- /dev/null +++ b/target/linux/ar71xx/files/drivers/net/ethernet/atheros/ag71xx/ag71xx_ar7240.c @@ -0,0 +1,1193 @@ +/* + * Driver for the built-in ethernet switch of the Atheros AR7240 SoC + * Copyright (c) 2010 Gabor Juhos <juhosg@openwrt.org> + * Copyright (c) 2010 Felix Fietkau <nbd@openwrt.org> + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License version 2 as published + * by the Free Software Foundation. + * + */ + +#include <linux/etherdevice.h> +#include <linux/list.h> +#include <linux/netdevice.h> +#include <linux/phy.h> +#include <linux/mii.h> +#include <linux/bitops.h> +#include <linux/switch.h> +#include "ag71xx.h" + +#define BITM(_count) (BIT(_count) - 1) +#define BITS(_shift, _count) (BITM(_count) << _shift) + +#define AR7240_REG_MASK_CTRL 0x00 +#define AR7240_MASK_CTRL_REVISION_M BITM(8) +#define AR7240_MASK_CTRL_VERSION_M BITM(8) +#define AR7240_MASK_CTRL_VERSION_S 8 +#define AR7240_MASK_CTRL_VERSION_AR7240 0x01 +#define AR7240_MASK_CTRL_VERSION_AR934X 0x02 +#define AR7240_MASK_CTRL_SOFT_RESET BIT(31) + +#define AR7240_REG_MAC_ADDR0 0x20 +#define AR7240_REG_MAC_ADDR1 0x24 + +#define AR7240_REG_FLOOD_MASK 0x2c +#define AR7240_FLOOD_MASK_BROAD_TO_CPU BIT(26) + +#define AR7240_REG_GLOBAL_CTRL 0x30 +#define AR7240_GLOBAL_CTRL_MTU_M BITM(12) + +#define AR7240_REG_VTU 0x0040 +#define AR7240_VTU_OP BITM(3) +#define AR7240_VTU_OP_NOOP 0x0 +#define AR7240_VTU_OP_FLUSH 0x1 +#define AR7240_VTU_OP_LOAD 0x2 +#define AR7240_VTU_OP_PURGE 0x3 +#define AR7240_VTU_OP_REMOVE_PORT 0x4 +#define AR7240_VTU_ACTIVE BIT(3) +#define AR7240_VTU_FULL BIT(4) +#define AR7240_VTU_PORT BITS(8, 4) +#define AR7240_VTU_PORT_S 8 +#define AR7240_VTU_VID BITS(16, 12) +#define AR7240_VTU_VID_S 16 +#define AR7240_VTU_PRIO BITS(28, 3) +#define AR7240_VTU_PRIO_S 28 +#define AR7240_VTU_PRIO_EN BIT(31) + +#define AR7240_REG_VTU_DATA 0x0044 +#define AR7240_VTUDATA_MEMBER BITS(0, 10) +#define AR7240_VTUDATA_VALID BIT(11) + +#define AR7240_REG_ATU 0x50 +#define AR7240_ATU_FLUSH_ALL 0x1 + +#define AR7240_REG_AT_CTRL 0x5c +#define AR7240_AT_CTRL_AGE_TIME BITS(0, 15) +#define AR7240_AT_CTRL_AGE_EN BIT(17) +#define AR7240_AT_CTRL_LEARN_CHANGE BIT(18) +#define AR7240_AT_CTRL_RESERVED BIT(19) +#define AR7240_AT_CTRL_ARP_EN BIT(20) + +#define AR7240_REG_TAG_PRIORITY 0x70 + +#define AR7240_REG_SERVICE_TAG 0x74 +#define AR7240_SERVICE_TAG_M BITM(16) + +#define AR7240_REG_CPU_PORT 0x78 +#define AR7240_MIRROR_PORT_S 4 +#define AR7240_CPU_PORT_EN BIT(8) + +#define AR7240_REG_MIB_FUNCTION0 0x80 +#define AR7240_MIB_TIMER_M BITM(16) +#define AR7240_MIB_AT_HALF_EN BIT(16) +#define AR7240_MIB_BUSY BIT(17) +#define AR7240_MIB_FUNC_S 24 +#define AR7240_MIB_FUNC_M BITM(3) +#define AR7240_MIB_FUNC_NO_OP 0x0 +#define AR7240_MIB_FUNC_FLUSH 0x1 +#define AR7240_MIB_FUNC_CAPTURE 0x3 + +#define AR7240_REG_MDIO_CTRL 0x98 +#define AR7240_MDIO_CTRL_DATA_M BITM(16) +#define AR7240_MDIO_CTRL_REG_ADDR_S 16 +#define AR7240_MDIO_CTRL_PHY_ADDR_S 21 +#define AR7240_MDIO_CTRL_CMD_WRITE 0 +#define AR7240_MDIO_CTRL_CMD_READ BIT(27) +#define AR7240_MDIO_CTRL_MASTER_EN BIT(30) +#define AR7240_MDIO_CTRL_BUSY BIT(31) + +#define AR7240_REG_PORT_BASE(_port) (0x100 + (_port) * 0x100) + +#define AR7240_REG_PORT_STATUS(_port) (AR7240_REG_PORT_BASE((_port)) + 0x00) +#define AR7240_PORT_STATUS_SPEED_S 0 +#define AR7240_PORT_STATUS_SPEED_M BITM(2) +#define AR7240_PORT_STATUS_SPEED_10 0 +#define AR7240_PORT_STATUS_SPEED_100 1 +#define AR7240_PORT_STATUS_SPEED_1000 2 +#define AR7240_PORT_STATUS_TXMAC BIT(2) +#define AR7240_PORT_STATUS_RXMAC BIT(3) +#define AR7240_PORT_STATUS_TXFLOW BIT(4) +#define AR7240_PORT_STATUS_RXFLOW BIT(5) +#define AR7240_PORT_STATUS_DUPLEX BIT(6) +#define AR7240_PORT_STATUS_LINK_UP BIT(8) +#define AR7240_PORT_STATUS_LINK_AUTO BIT(9) +#define AR7240_PORT_STATUS_LINK_PAUSE BIT(10) + +#define AR7240_REG_PORT_CTRL(_port) (AR7240_REG_PORT_BASE((_port)) + 0x04) +#define AR7240_PORT_CTRL_STATE_M BITM(3) +#define AR7240_PORT_CTRL_STATE_DISABLED 0 +#define AR7240_PORT_CTRL_STATE_BLOCK 1 +#define AR7240_PORT_CTRL_STATE_LISTEN 2 +#define AR7240_PORT_CTRL_STATE_LEARN 3 +#define AR7240_PORT_CTRL_STATE_FORWARD 4 +#define AR7240_PORT_CTRL_LEARN_LOCK BIT(7) +#define AR7240_PORT_CTRL_VLAN_MODE_S 8 +#define AR7240_PORT_CTRL_VLAN_MODE_KEEP 0 +#define AR7240_PORT_CTRL_VLAN_MODE_STRIP 1 +#define AR7240_PORT_CTRL_VLAN_MODE_ADD 2 +#define AR7240_PORT_CTRL_VLAN_MODE_DOUBLE_TAG 3 +#define AR7240_PORT_CTRL_IGMP_SNOOP BIT(10) +#define AR7240_PORT_CTRL_HEADER BIT(11) +#define AR7240_PORT_CTRL_MAC_LOOP BIT(12) +#define AR7240_PORT_CTRL_SINGLE_VLAN BIT(13) +#define AR7240_PORT_CTRL_LEARN BIT(14) +#define AR7240_PORT_CTRL_DOUBLE_TAG BIT(15) +#define AR7240_PORT_CTRL_MIRROR_TX BIT(16) +#define AR7240_PORT_CTRL_MIRROR_RX BIT(17) + +#define AR7240_REG_PORT_VLAN(_port) (AR7240_REG_PORT_BASE((_port)) + 0x08) + +#define AR7240_PORT_VLAN_DEFAULT_ID_S 0 +#define AR7240_PORT_VLAN_DEST_PORTS_S 16 +#define AR7240_PORT_VLAN_MODE_S 30 +#define AR7240_PORT_VLAN_MODE_PORT_ONLY 0 +#define AR7240_PORT_VLAN_MODE_PORT_FALLBACK 1 +#define AR7240_PORT_VLAN_MODE_VLAN_ONLY 2 +#define AR7240_PORT_VLAN_MODE_SECURE 3 + + +#define AR7240_REG_STATS_BASE(_port) (0x20000 + (_port) * 0x100) + +#define AR7240_STATS_RXBROAD 0x00 +#define AR7240_STATS_RXPAUSE 0x04 +#define AR7240_STATS_RXMULTI 0x08 +#define AR7240_STATS_RXFCSERR 0x0c +#define AR7240_STATS_RXALIGNERR 0x10 +#define AR7240_STATS_RXRUNT 0x14 +#define AR7240_STATS_RXFRAGMENT 0x18 +#define AR7240_STATS_RX64BYTE 0x1c +#define AR7240_STATS_RX128BYTE 0x20 +#define AR7240_STATS_RX256BYTE 0x24 +#define AR7240_STATS_RX512BYTE 0x28 +#define AR7240_STATS_RX1024BYTE 0x2c +#define AR7240_STATS_RX1518BYTE 0x30 +#define AR7240_STATS_RXMAXBYTE 0x34 +#define AR7240_STATS_RXTOOLONG 0x38 +#define AR7240_STATS_RXGOODBYTE 0x3c +#define AR7240_STATS_RXBADBYTE 0x44 +#define AR7240_STATS_RXOVERFLOW 0x4c +#define AR7240_STATS_FILTERED 0x50 +#define AR7240_STATS_TXBROAD 0x54 +#define AR7240_STATS_TXPAUSE 0x58 +#define AR7240_STATS_TXMULTI 0x5c +#define AR7240_STATS_TXUNDERRUN 0x60 +#define AR7240_STATS_TX64BYTE 0x64 +#define AR7240_STATS_TX128BYTE 0x68 +#define AR7240_STATS_TX256BYTE 0x6c +#define AR7240_STATS_TX512BYTE 0x70 +#define AR7240_STATS_TX1024BYTE 0x74 +#define AR7240_STATS_TX1518BYTE 0x78 +#define AR7240_STATS_TXMAXBYTE 0x7c +#define AR7240_STATS_TXOVERSIZE 0x80 +#define AR7240_STATS_TXBYTE 0x84 +#define AR7240_STATS_TXCOLLISION 0x8c +#define AR7240_STATS_TXABORTCOL 0x90 +#define AR7240_STATS_TXMULTICOL 0x94 +#define AR7240_STATS_TXSINGLECOL 0x98 +#define AR7240_STATS_TXEXCDEFER 0x9c +#define AR7240_STATS_TXDEFER 0xa0 +#define AR7240_STATS_TXLATECOL 0xa4 + +#define AR7240_PORT_CPU 0 +#define AR7240_NUM_PORTS 6 +#define AR7240_NUM_PHYS 5 + +#define AR7240_PHY_ID1 0x004d +#define AR7240_PHY_ID2 0xd041 + +#define AR934X_PHY_ID1 0x004d +#define AR934X_PHY_ID2 0xd042 + +#define AR7240_MAX_VLANS 16 + +#define AR934X_REG_OPER_MODE0 0x04 +#define AR934X_OPER_MODE0_MAC_GMII_EN BIT(6) +#define AR934X_OPER_MODE0_PHY_MII_EN BIT(10) + +#define AR934X_REG_OPER_MODE1 0x08 +#define AR934X_REG_OPER_MODE1_PHY4_MII_EN BIT(28) + +#define AR934X_REG_FLOOD_MASK 0x2c +#define AR934X_FLOOD_MASK_BC_DP(_p) BIT(25 + (_p)) + +#define AR934X_REG_QM_CTRL 0x3c +#define AR934X_QM_CTRL_ARP_EN BIT(15) + +#define AR934X_REG_AT_CTRL 0x5c +#define AR934X_AT_CTRL_AGE_TIME BITS(0, 15) +#define AR934X_AT_CTRL_AGE_EN BIT(17) +#define AR934X_AT_CTRL_LEARN_CHANGE BIT(18) + +#define AR934X_MIB_ENABLE BIT(30) + +#define AR934X_REG_PORT_BASE(_port) (0x100 + (_port) * 0x100) + +#define AR934X_REG_PORT_VLAN1(_port) (AR934X_REG_PORT_BASE((_port)) + 0x08) +#define AR934X_PORT_VLAN1_DEFAULT_SVID_S 0 +#define AR934X_PORT_VLAN1_FORCE_DEFAULT_VID_EN BIT(12) +#define AR934X_PORT_VLAN1_PORT_TLS_MODE BIT(13) +#define AR934X_PORT_VLAN1_PORT_VLAN_PROP_EN BIT(14) +#define AR934X_PORT_VLAN1_PORT_CLONE_EN BIT(15) +#define AR934X_PORT_VLAN1_DEFAULT_CVID_S 16 +#define AR934X_PORT_VLAN1_FORCE_PORT_VLAN_EN BIT(28) +#define AR934X_PORT_VLAN1_ING_PORT_PRI_S 29 + +#define AR934X_REG_PORT_VLAN2(_port) (AR934X_REG_PORT_BASE((_port)) + 0x0c) +#define AR934X_PORT_VLAN2_PORT_VID_MEM_S 16 +#define AR934X_PORT_VLAN2_8021Q_MODE_S 30 +#define AR934X_PORT_VLAN2_8021Q_MODE_PORT_ONLY 0 +#define AR934X_PORT_VLAN2_8021Q_MODE_PORT_FALLBACK 1 +#define AR934X_PORT_VLAN2_8021Q_MODE_VLAN_ONLY 2 +#define AR934X_PORT_VLAN2_8021Q_MODE_SECURE 3 + +#define sw_to_ar7240(_dev) container_of(_dev, struct ar7240sw, swdev) + +struct ar7240sw_port_stat { + unsigned long rx_broadcast; + unsigned long rx_pause; + unsigned long rx_multicast; + unsigned long rx_fcs_error; + unsigned long rx_align_error; + unsigned long rx_runt; + unsigned long rx_fragments; + unsigned long rx_64byte; + unsigned long rx_128byte; + unsigned long rx_256byte; + unsigned long rx_512byte; + unsigned long rx_1024byte; + unsigned long rx_1518byte; + unsigned long rx_maxbyte; + unsigned long rx_toolong; + unsigned long rx_good_byte; + unsigned long rx_bad_byte; + unsigned long rx_overflow; + unsigned long filtered; + + unsigned long tx_broadcast; + unsigned long tx_pause; + unsigned long tx_multicast; + unsigned long tx_underrun; + unsigned long tx_64byte; + unsigned long tx_128byte; + unsigned long tx_256byte; + unsigned long tx_512byte; + unsigned long tx_1024byte; + unsigned long tx_1518byte; + unsigned long tx_maxbyte; + unsigned long tx_oversize; + unsigned long tx_byte; + unsigned long tx_collision; + unsigned long tx_abortcol; + unsigned long tx_multicol; + unsigned long tx_singlecol; + unsigned long tx_excdefer; + unsigned long tx_defer; + unsigned long tx_xlatecol; +}; + +struct ar7240sw { + struct mii_bus *mii_bus; + struct ag71xx_switch_platform_data *swdata; + struct switch_dev swdev; + int num_ports; + u8 ver; + bool vlan; + u16 vlan_id[AR7240_MAX_VLANS]; + u8 vlan_table[AR7240_MAX_VLANS]; + u8 vlan_tagged; + u16 pvid[AR7240_NUM_PORTS]; + char buf[80]; + + rwlock_t stats_lock; + struct ar7240sw_port_stat port_stats[AR7240_NUM_PORTS]; +}; + +struct ar7240sw_hw_stat { + char string[ETH_GSTRING_LEN]; + int sizeof_stat; + int reg; +}; + +static DEFINE_MUTEX(reg_mutex); + +static inline int sw_is_ar7240(struct ar7240sw *as) +{ + return as->ver == AR7240_MASK_CTRL_VERSION_AR7240; +} + +static inline int sw_is_ar934x(struct ar7240sw *as) +{ + return as->ver == AR7240_MASK_CTRL_VERSION_AR934X; +} + +static inline u32 ar7240sw_port_mask(struct ar7240sw *as, int port) +{ + return BIT(port); +} + +static inline u32 ar7240sw_port_mask_all(struct ar7240sw *as) +{ + return BIT(as->swdev.ports) - 1; +} + +static inline u32 ar7240sw_port_mask_but(struct ar7240sw *as, int port) +{ + return ar7240sw_port_mask_all(as) & ~BIT(port); +} + +static inline u16 mk_phy_addr(u32 reg) +{ + return 0x17 & ((reg >> 4) | 0x10); +} + +static inline u16 mk_phy_reg(u32 reg) +{ + return (reg << 1) & 0x1e; +} + +static inline u16 mk_high_addr(u32 reg) +{ + return (reg >> 7) & 0x1ff; +} + +static u32 __ar7240sw_reg_read(struct mii_bus *mii, u32 reg) +{ + unsigned long flags; + u16 phy_addr; + u16 phy_reg; + u32 hi, lo; + + reg = (reg & 0xfffffffc) >> 2; + phy_addr = mk_phy_addr(reg); + phy_reg = mk_phy_reg(reg); + + local_irq_save(flags); + ag71xx_mdio_mii_write(mii->priv, 0x1f, 0x10, mk_high_addr(reg)); + lo = (u32) ag71xx_mdio_mii_read(mii->priv, phy_addr, phy_reg); + hi = (u32) ag71xx_mdio_mii_read(mii->priv, phy_addr, phy_reg + 1); + local_irq_restore(flags); + + return (hi << 16) | lo; +} + +static void __ar7240sw_reg_write(struct mii_bus *mii, u32 reg, u32 val) +{ + unsigned long flags; + u16 phy_addr; + u16 phy_reg; + + reg = (reg & 0xfffffffc) >> 2; + phy_addr = mk_phy_addr(reg); + phy_reg = mk_phy_reg(reg); + + local_irq_save(flags); + ag71xx_mdio_mii_write(mii->priv, 0x1f, 0x10, mk_high_addr(reg)); + ag71xx_mdio_mii_write(mii->priv, phy_addr, phy_reg + 1, (val >> 16)); + ag71xx_mdio_mii_write(mii->priv, phy_addr, phy_reg, (val & 0xffff)); + local_irq_restore(flags); +} + +static u32 ar7240sw_reg_read(struct mii_bus *mii, u32 reg_addr) +{ + u32 ret; + + mutex_lock(®_mutex); + ret = __ar7240sw_reg_read(mii, reg_addr); + mutex_unlock(®_mutex); + + return ret; +} + +static void ar7240sw_reg_write(struct mii_bus *mii, u32 reg_addr, u32 reg_val) +{ + mutex_lock(®_mutex); + __ar7240sw_reg_write(mii, reg_addr, reg_val); + mutex_unlock(®_mutex); +} + +static u32 ar7240sw_reg_rmw(struct mii_bus *mii, u32 reg, u32 mask, u32 val) +{ + u32 t; + + mutex_lock(®_mutex); + t = __ar7240sw_reg_read(mii, reg); + t &= ~mask; + t |= val; + __ar7240sw_reg_write(mii, reg, t); + mutex_unlock(®_mutex); + + return t; +} + +static void ar7240sw_reg_set(struct mii_bus *mii, u32 reg, u32 val) +{ + u32 t; + + mutex_lock(®_mutex); + t = __ar7240sw_reg_read(mii, reg); + t |= val; + __ar7240sw_reg_write(mii, reg, t); + mutex_unlock(®_mutex); +} + +static int __ar7240sw_reg_wait(struct mii_bus *mii, u32 reg, u32 mask, u32 val, + unsigned timeout) +{ + int i; + + for (i = 0; i < timeout; i++) { + u32 t; + + t = __ar7240sw_reg_read(mii, reg); + if ((t & mask) == val) + return 0; + + msleep(1); + } + + return -ETIMEDOUT; +} + +static int ar7240sw_reg_wait(struct mii_bus *mii, u32 reg, u32 mask, u32 val, + unsigned timeout) +{ + int ret; + + mutex_lock(®_mutex); + ret = __ar7240sw_reg_wait(mii, reg, mask, val, timeout); + mutex_unlock(®_mutex); + return ret; +} + +u16 ar7240sw_phy_read(struct mii_bus *mii, unsigned phy_addr, + unsigned reg_addr) +{ + u32 t, val = 0xffff; + int err; + + if (phy_addr >= AR7240_NUM_PHYS) + return 0xffff; + + mutex_lock(®_mutex); + t = (reg_addr << AR7240_MDIO_CTRL_REG_ADDR_S) | + (phy_addr << AR7240_MDIO_CTRL_PHY_ADDR_S) | + AR7240_MDIO_CTRL_MASTER_EN | + AR7240_MDIO_CTRL_BUSY | + AR7240_MDIO_CTRL_CMD_READ; + + __ar7240sw_reg_write(mii, AR7240_REG_MDIO_CTRL, t); + err = __ar7240sw_reg_wait(mii, AR7240_REG_MDIO_CTRL, + AR7240_MDIO_CTRL_BUSY, 0, 5); + if (!err) + val = __ar7240sw_reg_read(mii, AR7240_REG_MDIO_CTRL); + mutex_unlock(®_mutex); + + return val & AR7240_MDIO_CTRL_DATA_M; +} + +int ar7240sw_phy_write(struct mii_bus *mii, unsigned phy_addr, + unsigned reg_addr, u16 reg_val) +{ + u32 t; + int ret; + + if (phy_addr >= AR7240_NUM_PHYS) + return -EINVAL; + + mutex_lock(®_mutex); + t = (phy_addr << AR7240_MDIO_CTRL_PHY_ADDR_S) | + (reg_addr << AR7240_MDIO_CTRL_REG_ADDR_S) | + AR7240_MDIO_CTRL_MASTER_EN | + AR7240_MDIO_CTRL_BUSY | + AR7240_MDIO_CTRL_CMD_WRITE | + reg_val; + + __ar7240sw_reg_write(mii, AR7240_REG_MDIO_CTRL, t); + ret = __ar7240sw_reg_wait(mii, AR7240_REG_MDIO_CTRL, + AR7240_MDIO_CTRL_BUSY, 0, 5); + mutex_unlock(®_mutex); + + return ret; +} + +static int ar7240sw_capture_stats(struct ar7240sw *as) +{ + struct mii_bus *mii = as->mii_bus; + int port; + int ret; + + write_lock(&as->stats_lock); + + /* Capture the hardware statistics for all ports */ + ar7240sw_reg_rmw(mii, AR7240_REG_MIB_FUNCTION0, + (AR7240_MIB_FUNC_M << AR7240_MIB_FUNC_S), + (AR7240_MIB_FUNC_CAPTURE << AR7240_MIB_FUNC_S)); + + /* Wait for the capturing to complete. */ + ret = ar7240sw_reg_wait(mii, AR7240_REG_MIB_FUNCTION0, + AR7240_MIB_BUSY, 0, 10); + + if (ret) + goto unlock; + + for (port = 0; port < AR7240_NUM_PORTS; port++) { + unsigned int base; + struct ar7240sw_port_stat *stats; + + base = AR7240_REG_STATS_BASE(port); + stats = &as->port_stats[port]; + +#define READ_STAT(_r) ar7240sw_reg_read(mii, base + AR7240_STATS_ ## _r) + + stats->rx_good_byte += READ_STAT(RXGOODBYTE); + stats->tx_byte += READ_STAT(TXBYTE); + +#undef READ_STAT + } + + ret = 0; + +unlock: + write_unlock(&as->stats_lock); + return ret; +} + +static void ar7240sw_disable_port(struct ar7240sw *as, unsigned port) +{ + ar7240sw_reg_write(as->mii_bus, AR7240_REG_PORT_CTRL(port), + AR7240_PORT_CTRL_STATE_DISABLED); +} + +static void ar7240sw_setup(struct ar7240sw *as) +{ + struct mii_bus *mii = as->mii_bus; + + /* Enable CPU port, and disable mirror port */ + ar7240sw_reg_write(mii, AR7240_REG_CPU_PORT, + AR7240_CPU_PORT_EN | + (15 << AR7240_MIRROR_PORT_S)); + + /* Setup TAG priority mapping */ + ar7240sw_reg_write(mii, AR7240_REG_TAG_PRIORITY, 0xfa50); + + if (sw_is_ar934x(as)) { + /* Enable aging, MAC replacing */ + ar7240sw_reg_write(mii, AR934X_REG_AT_CTRL, + 0x2b /* 5 min age time */ | + AR934X_AT_CTRL_AGE_EN | + AR934X_AT_CTRL_LEARN_CHANGE); + /* Enable ARP frame acknowledge */ + ar7240sw_reg_set(mii, AR934X_REG_QM_CTRL, + AR934X_QM_CTRL_ARP_EN); + /* Enable Broadcast frames transmitted to the CPU */ + ar7240sw_reg_set(mii, AR934X_REG_FLOOD_MASK, + AR934X_FLOOD_MASK_BC_DP(0)); + + /* Enable MIB counters */ + ar7240sw_reg_set(mii, AR7240_REG_MIB_FUNCTION0, + AR934X_MIB_ENABLE); + + } else { + /* Enable ARP frame acknowledge, aging, MAC replacing */ + ar7240sw_reg_write(mii, AR7240_REG_AT_CTRL, + AR7240_AT_CTRL_RESERVED | + 0x2b /* 5 min age time */ | + AR7240_AT_CTRL_AGE_EN | + AR7240_AT_CTRL_ARP_EN | + AR7240_AT_CTRL_LEARN_CHANGE); + /* Enable Broadcast frames transmitted to the CPU */ + ar7240sw_reg_set(mii, AR7240_REG_FLOOD_MASK, + AR7240_FLOOD_MASK_BROAD_TO_CPU); + } + + /* setup MTU */ + ar7240sw_reg_rmw(mii, AR7240_REG_GLOBAL_CTRL, AR7240_GLOBAL_CTRL_MTU_M, + 1536); + + /* setup Service TAG */ + ar7240sw_reg_rmw(mii, AR7240_REG_SERVICE_TAG, AR7240_SERVICE_TAG_M, 0); +} + +static int ar7240sw_reset(struct ar7240sw *as) +{ + struct mii_bus *mii = as->mii_bus; + int ret; + int i; + + /* Set all ports to disabled state. */ + for (i = 0; i < AR7240_NUM_PORTS; i++) + ar7240sw_disable_port(as, i); + + /* Wait for transmit queues to drain. */ + msleep(2); + + /* Reset the switch. */ + ar7240sw_reg_write(mii, AR7240_REG_MASK_CTRL, + AR7240_MASK_CTRL_SOFT_RESET); + + ret = ar7240sw_reg_wait(mii, AR7240_REG_MASK_CTRL, + AR7240_MASK_CTRL_SOFT_RESET, 0, 1000); + + /* setup PHYs */ + for (i = 0; i < AR7240_NUM_PHYS; i++) { + ar7240sw_phy_write(mii, i, MII_ADVERTISE, + ADVERTISE_ALL | ADVERTISE_PAUSE_CAP | + ADVERTISE_PAUSE_ASYM); + ar7240sw_phy_write(mii, i, MII_BMCR, + BMCR_RESET | BMCR_ANENABLE); + } + msleep(1000); + + ar7240sw_setup(as); + return ret; +} + +static void ar7240sw_setup_port(struct ar7240sw *as, unsigned port, u8 portmask) +{ + struct mii_bus *mii = as->mii_bus; + u32 ctrl; + u32 vid, mode; + + ctrl = AR7240_PORT_CTRL_STATE_FORWARD | AR7240_PORT_CTRL_LEARN | + AR7240_PORT_CTRL_SINGLE_VLAN; + + if (port == AR7240_PORT_CPU) { + ar7240sw_reg_write(mii, AR7240_REG_PORT_STATUS(port), + AR7240_PORT_STATUS_SPEED_1000 | + AR7240_PORT_STATUS_TXFLOW | + AR7240_PORT_STATUS_RXFLOW | + AR7240_PORT_STATUS_TXMAC | + AR7240_PORT_STATUS_RXMAC | + AR7240_PORT_STATUS_DUPLEX); + } else { + ar7240sw_reg_write(mii, AR7240_REG_PORT_STATUS(port), + AR7240_PORT_STATUS_LINK_AUTO); + } + + /* Set the default VID for this port */ + if (as->vlan) { + vid = as->vlan_id[as->pvid[port]]; + mode = AR7240_PORT_VLAN_MODE_SECURE; + } else { + vid = port; + mode = AR7240_PORT_VLAN_MODE_PORT_ONLY; + } + + if (as->vlan) { + if (as->vlan_tagged & BIT(port)) + ctrl |= AR7240_PORT_CTRL_VLAN_MODE_ADD << + AR7240_PORT_CTRL_VLAN_MODE_S; + else + ctrl |= AR7240_PORT_CTRL_VLAN_MODE_STRIP << + AR7240_PORT_CTRL_VLAN_MODE_S; + } else { + ctrl |= AR7240_PORT_CTRL_VLAN_MODE_KEEP << + AR7240_PORT_CTRL_VLAN_MODE_S; + } + + if (!portmask) { + if (port == AR7240_PORT_CPU) + portmask = ar7240sw_port_mask_but(as, AR7240_PORT_CPU); + else + portmask = ar7240sw_port_mask(as, AR7240_PORT_CPU); + } + + /* allow the port to talk to all other ports, but exclude its + * own ID to prevent frames from being reflected back to the + * port that they came from */ + portmask &= ar7240sw_port_mask_but(as, port); + + ar7240sw_reg_write(mii, AR7240_REG_PORT_CTRL(port), ctrl); + if (sw_is_ar934x(as)) { + u32 vlan1, vlan2; + + vlan1 = (vid << AR934X_PORT_VLAN1_DEFAULT_CVID_S); + vlan2 = (portmask << AR934X_PORT_VLAN2_PORT_VID_MEM_S) | + (mode << AR934X_PORT_VLAN2_8021Q_MODE_S); + ar7240sw_reg_write(mii, AR934X_REG_PORT_VLAN1(port), vlan1); + ar7240sw_reg_write(mii, AR934X_REG_PORT_VLAN2(port), vlan2); + } else { + u32 vlan; + + vlan = vid | (mode << AR7240_PORT_VLAN_MODE_S) | + (portmask << AR7240_PORT_VLAN_DEST_PORTS_S); + + ar7240sw_reg_write(mii, AR7240_REG_PORT_VLAN(port), vlan); + } +} + +static int ar7240_set_addr(struct ar7240sw *as, u8 *addr) +{ + struct mii_bus *mii = as->mii_bus; + u32 t; + + t = (addr[4] << 8) | addr[5]; + ar7240sw_reg_write(mii, AR7240_REG_MAC_ADDR0, t); + + t = (addr[0] << 24) | (addr[1] << 16) | (addr[2] << 8) | addr[3]; + ar7240sw_reg_write(mii, AR7240_REG_MAC_ADDR1, t); + + return 0; +} + +static int +ar7240_set_vid(struct switch_dev *dev, const struct switch_attr *attr, + struct switch_val *val) +{ + struct ar7240sw *as = sw_to_ar7240(dev); + as->vlan_id[val->port_vlan] = val->value.i; + return 0; +} + +static int +ar7240_get_vid(struct switch_dev *dev, const struct switch_attr *attr, + struct switch_val *val) +{ + struct ar7240sw *as = sw_to_ar7240(dev); + val->value.i = as->vlan_id[val->port_vlan]; + return 0; +} + +static int +ar7240_set_pvid(struct switch_dev *dev, int port, int vlan) +{ + struct ar7240sw *as = sw_to_ar7240(dev); + + /* make sure no invalid PVIDs get set */ + + if (vlan >= dev->vlans) + return -EINVAL; + + as->pvid[port] = vlan; + return 0; +} + +static int +ar7240_get_pvid(struct switch_dev *dev, int port, int *vlan) +{ + struct ar7240sw *as = sw_to_ar7240(dev); + *vlan = as->pvid[port]; + return 0; +} + +static int +ar7240_get_ports(struct switch_dev *dev, struct switch_val *val) +{ + struct ar7240sw *as = sw_to_ar7240(dev); + u8 ports = as->vlan_table[val->port_vlan]; + int i; + + val->len = 0; + for (i = 0; i < as->swdev.ports; i++) { + struct switch_port *p; + + if (!(ports & (1 << i))) + continue; + + p = &val->value.ports[val->len++]; + p->id = i; + if (as->vlan_tagged & (1 << i)) + p->flags = (1 << SWITCH_PORT_FLAG_TAGGED); + else + p->flags = 0; + } + return 0; +} + +static int +ar7240_set_ports(struct switch_dev *dev, struct switch_val *val) +{ + struct ar7240sw *as = sw_to_ar7240(dev); + u8 *vt = &as->vlan_table[val->port_vlan]; + int i, j; + + *vt = 0; + for (i = 0; i < val->len; i++) { + struct switch_port *p = &val->value.ports[i]; + + if (p->flags & (1 << SWITCH_PORT_FLAG_TAGGED)) + as->vlan_tagged |= (1 << p->id); + else { + as->vlan_tagged &= ~(1 << p->id); + as->pvid[p->id] = val->port_vlan; + + /* make sure that an untagged port does not + * appear in other vlans */ + for (j = 0; j < AR7240_MAX_VLANS; j++) { + if (j == val->port_vlan) + continue; + as->vlan_table[j] &= ~(1 << p->id); + } + } + + *vt |= 1 << p->id; + } + return 0; +} + +static int +ar7240_set_vlan(struct switch_dev *dev, const struct switch_attr *attr, + struct switch_val *val) +{ + struct ar7240sw *as = sw_to_ar7240(dev); + as->vlan = !!val->value.i; + return 0; +} + +static int +ar7240_get_vlan(struct switch_dev *dev, const struct switch_attr *attr, + struct switch_val *val) +{ + struct ar7240sw *as = sw_to_ar7240(dev); + val->value.i = as->vlan; + return 0; +} + +static void +ar7240_vtu_op(struct ar7240sw *as, u32 op, u32 val) +{ + struct mii_bus *mii = as->mii_bus; + + if (ar7240sw_reg_wait(mii, AR7240_REG_VTU, AR7240_VTU_ACTIVE, 0, 5)) + return; + + if ((op & AR7240_VTU_OP) == AR7240_VTU_OP_LOAD) { + val &= AR7240_VTUDATA_MEMBER; + val |= AR7240_VTUDATA_VALID; + ar7240sw_reg_write(mii, AR7240_REG_VTU_DATA, val); + } + op |= AR7240_VTU_ACTIVE; + ar7240sw_reg_write(mii, AR7240_REG_VTU, op); +} + +static int +ar7240_hw_apply(struct switch_dev *dev) +{ + struct ar7240sw *as = sw_to_ar7240(dev); + u8 portmask[AR7240_NUM_PORTS]; + int i, j; + + /* flush all vlan translation unit entries */ + ar7240_vtu_op(as, AR7240_VTU_OP_FLUSH, 0); + + memset(portmask, 0, sizeof(portmask)); + if (as->vlan) { + /* calculate the port destination masks and load vlans + * into the vlan translation unit */ + for (j = 0; j < AR7240_MAX_VLANS; j++) { + u8 vp = as->vlan_table[j]; + + if (!vp) + continue; + + for (i = 0; i < as->swdev.ports; i++) { + u8 mask = (1 << i); + if (vp & mask) + portmask[i] |= vp & ~mask; + } + + ar7240_vtu_op(as, + AR7240_VTU_OP_LOAD | + (as->vlan_id[j] << AR7240_VTU_VID_S), + as->vlan_table[j]); + } + } else { + /* vlan disabled: + * isolate all ports, but connect them to the cpu port */ + for (i = 0; i < as->swdev.ports; i++) { + if (i == AR7240_PORT_CPU) + continue; + + portmask[i] = 1 << AR7240_PORT_CPU; + portmask[AR7240_PORT_CPU] |= (1 << i); + } + } + + /* update the port destination mask registers and tag settings */ + for (i = 0; i < as->swdev.ports; i++) + ar7240sw_setup_port(as, i, portmask[i]); + + return 0; +} + +static int +ar7240_reset_switch(struct switch_dev *dev) +{ + struct ar7240sw *as = sw_to_ar7240(dev); + ar7240sw_reset(as); + return 0; +} + +static int +ar7240_get_port_link(struct switch_dev *dev, int port, + struct switch_port_link *link) +{ + struct ar7240sw *as = sw_to_ar7240(dev); + struct mii_bus *mii = as->mii_bus; + u32 status; + + if (port > AR7240_NUM_PORTS) + return -EINVAL; + + status = ar7240sw_reg_read(mii, AR7240_REG_PORT_STATUS(port)); + link->aneg = !!(status & AR7240_PORT_STATUS_LINK_AUTO); + if (link->aneg) { + link->link = !!(status & AR7240_PORT_STATUS_LINK_UP); + if (!link->link) + return 0; + } else { + link->link = true; + } + + link->duplex = !!(status & AR7240_PORT_STATUS_DUPLEX); + link->tx_flow = !!(status & AR7240_PORT_STATUS_TXFLOW); + link->rx_flow = !!(status & AR7240_PORT_STATUS_RXFLOW); + switch (status & AR7240_PORT_STATUS_SPEED_M) { + case AR7240_PORT_STATUS_SPEED_10: + link->speed = SWITCH_PORT_SPEED_10; + break; + case AR7240_PORT_STATUS_SPEED_100: + link->speed = SWITCH_PORT_SPEED_100; + break; + case AR7240_PORT_STATUS_SPEED_1000: + link->speed = SWITCH_PORT_SPEED_1000; + break; + } + + return 0; +} + +static int +ar7240_get_port_stats(struct switch_dev *dev, int port, + struct switch_port_stats *stats) +{ + struct ar7240sw *as = sw_to_ar7240(dev); + + if (port > AR7240_NUM_PORTS) + return -EINVAL; + + ar7240sw_capture_stats(as); + + read_lock(&as->stats_lock); + stats->rx_bytes = as->port_stats[port].rx_good_byte; + stats->tx_bytes = as->port_stats[port].tx_byte; + read_unlock(&as->stats_lock); + + return 0; +} + +static struct switch_attr ar7240_globals[] = { + { + .type = SWITCH_TYPE_INT, + .name = "enable_vlan", + .description = "Enable VLAN mode", + .set = ar7240_set_vlan, + .get = ar7240_get_vlan, + .max = 1 + }, +}; + +static struct switch_attr ar7240_port[] = { +}; + +static struct switch_attr ar7240_vlan[] = { + { + .type = SWITCH_TYPE_INT, + .name = "vid", + .description = "VLAN ID", + .set = ar7240_set_vid, + .get = ar7240_get_vid, + .max = 4094, + }, +}; + +static const struct switch_dev_ops ar7240_ops = { + .attr_global = { + .attr = ar7240_globals, + .n_attr = ARRAY_SIZE(ar7240_globals), + }, + .attr_port = { + .attr = ar7240_port, + .n_attr = ARRAY_SIZE(ar7240_port), + }, + .attr_vlan = { + .attr = ar7240_vlan, + .n_attr = ARRAY_SIZE(ar7240_vlan), + }, + .get_port_pvid = ar7240_get_pvid, + .set_port_pvid = ar7240_set_pvid, + .get_vlan_ports = ar7240_get_ports, + .set_vlan_ports = ar7240_set_ports, + .apply_config = ar7240_hw_apply, + .reset_switch = ar7240_reset_switch, + .get_port_link = ar7240_get_port_link, + .get_port_stats = ar7240_get_port_stats, +}; + +static struct ar7240sw *ar7240_probe(struct ag71xx *ag) +{ + struct ag71xx_platform_data *pdata = ag71xx_get_pdata(ag); + struct mii_bus *mii = ag->mii_bus; + struct ar7240sw *as; + struct switch_dev *swdev; + u32 ctrl; + u16 phy_id1; + u16 phy_id2; + int i; + + phy_id1 = ar7240sw_phy_read(mii, 0, MII_PHYSID1); + phy_id2 = ar7240sw_phy_read(mii, 0, MII_PHYSID2); + if ((phy_id1 != AR7240_PHY_ID1 || phy_id2 != AR7240_PHY_ID2) && + (phy_id1 != AR934X_PHY_ID1 || phy_id2 != AR934X_PHY_ID2)) { + pr_err("%s: unknown phy id '%04x:%04x'\n", + ag->dev->name, phy_id1, phy_id2); + return NULL; + } + + as = kzalloc(sizeof(*as), GFP_KERNEL); + if (!as) + return NULL; + + as->mii_bus = mii; + as->swdata = pdata->switch_data; + + swdev = &as->swdev; + + ctrl = ar7240sw_reg_read(mii, AR7240_REG_MASK_CTRL); + as->ver = (ctrl >> AR7240_MASK_CTRL_VERSION_S) & + AR7240_MASK_CTRL_VERSION_M; + + if (sw_is_ar7240(as)) { + swdev->name = "AR7240/AR9330 built-in switch"; + swdev->ports = AR7240_NUM_PORTS - 1; + } else if (sw_is_ar934x(as)) { + swdev->name = "AR934X built-in switch"; + + if (pdata->phy_if_mode == PHY_INTERFACE_MODE_GMII) { + ar7240sw_reg_set(mii, AR934X_REG_OPER_MODE0, + AR934X_OPER_MODE0_MAC_GMII_EN); + } else if (pdata->phy_if_mode == PHY_INTERFACE_MODE_MII) { + ar7240sw_reg_set(mii, AR934X_REG_OPER_MODE0, + AR934X_OPER_MODE0_PHY_MII_EN); + } else { + pr_err("%s: invalid PHY interface mode\n", + ag->dev->name); + goto err_free; + } + + if (as->swdata->phy4_mii_en) { + ar7240sw_reg_set(mii, AR934X_REG_OPER_MODE1, + AR934X_REG_OPER_MODE1_PHY4_MII_EN); + swdev->ports = AR7240_NUM_PORTS - 1; + } else { + swdev->ports = AR7240_NUM_PORTS; + } + } else { + pr_err("%s: unsupported chip, ctrl=%08x\n", + ag->dev->name, ctrl); + goto err_free; + } + + swdev->cpu_port = AR7240_PORT_CPU; + swdev->vlans = AR7240_MAX_VLANS; + swdev->ops = &ar7240_ops; + + if (register_switch(&as->swdev, ag->dev) < 0) + goto err_free; + + pr_info("%s: Found an %s\n", ag->dev->name, swdev->name); + + /* initialize defaults */ + for (i = 0; i < AR7240_MAX_VLANS; i++) + as->vlan_id[i] = i; + + as->vlan_table[0] = ar7240sw_port_mask_all(as); + + return as; + +err_free: + kfree(as); + return NULL; +} + +static void link_function(struct work_struct *work) { + struct ag71xx *ag = container_of(work, struct ag71xx, link_work.work); + struct ar7240sw *as = ag->phy_priv; + unsigned long flags; + u8 mask; + int i; + int status = 0; + + mask = ~as->swdata->phy_poll_mask; + for (i = 0; i < AR7240_NUM_PHYS; i++) { + int link; + + if (!(mask & BIT(i))) + continue; + + link = ar7240sw_phy_read(ag->mii_bus, i, MII_BMSR); + if (link & BMSR_LSTATUS) { + status = 1; + break; + } + } + + spin_lock_irqsave(&ag->lock, flags); + if (status != ag->link) { + ag->link = status; + ag71xx_link_adjust(ag); + } + spin_unlock_irqrestore(&ag->lock, flags); + + schedule_delayed_work(&ag->link_work, HZ / 2); +} + +void ag71xx_ar7240_start(struct ag71xx *ag) +{ + struct ar7240sw *as = ag->phy_priv; + + ar7240sw_reset(as); + + ag->speed = SPEED_1000; + ag->duplex = 1; + + ar7240_set_addr(as, ag->dev->dev_addr); + ar7240_hw_apply(&as->swdev); + + schedule_delayed_work(&ag->link_work, HZ / 10); +} + +void ag71xx_ar7240_stop(struct ag71xx *ag) +{ + cancel_delayed_work_sync(&ag->link_work); +} + +int __devinit ag71xx_ar7240_init(struct ag71xx *ag) +{ + struct ar7240sw *as; + + as = ar7240_probe(ag); + if (!as) + return -ENODEV; + + ag->phy_priv = as; + ar7240sw_reset(as); + + rwlock_init(&as->stats_lock); + INIT_DELAYED_WORK(&ag->link_work, link_function); + + return 0; +} + +void ag71xx_ar7240_cleanup(struct ag71xx *ag) +{ + struct ar7240sw *as = ag->phy_priv; + + if (!as) + return; + + unregister_switch(&as->swdev); + kfree(as); + ag->phy_priv = NULL; +} diff --git a/target/linux/ar71xx/files/drivers/net/ethernet/atheros/ag71xx/ag71xx_ar8216.c b/target/linux/ar71xx/files/drivers/net/ethernet/atheros/ag71xx/ag71xx_ar8216.c new file mode 100644 index 000000000..7ec43b722 --- /dev/null +++ b/target/linux/ar71xx/files/drivers/net/ethernet/atheros/ag71xx/ag71xx_ar8216.c @@ -0,0 +1,44 @@ +/* + * Atheros AR71xx built-in ethernet mac driver + * Special support for the Atheros ar8216 switch chip + * + * Copyright (C) 2009-2010 Gabor Juhos <juhosg@openwrt.org> + * + * Based on Atheros' AG7100 driver + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License version 2 as published + * by the Free Software Foundation. + */ + +#include "ag71xx.h" + +#define AR8216_PACKET_TYPE_MASK 0xf +#define AR8216_PACKET_TYPE_NORMAL 0 + +#define AR8216_HEADER_LEN 2 + +void ag71xx_add_ar8216_header(struct ag71xx *ag, struct sk_buff *skb) +{ + skb_push(skb, AR8216_HEADER_LEN); + skb->data[0] = 0x10; + skb->data[1] = 0x80; +} + +int ag71xx_remove_ar8216_header(struct ag71xx *ag, struct sk_buff *skb, + int pktlen) +{ + u8 type; + + type = skb->data[1] & AR8216_PACKET_TYPE_MASK; + switch (type) { + case AR8216_PACKET_TYPE_NORMAL: + break; + + default: + return -EINVAL; + } + + skb_pull(skb, AR8216_HEADER_LEN); + return 0; +} diff --git a/target/linux/ar71xx/files/drivers/net/ethernet/atheros/ag71xx/ag71xx_debugfs.c b/target/linux/ar71xx/files/drivers/net/ethernet/atheros/ag71xx/ag71xx_debugfs.c new file mode 100644 index 000000000..65f2be198 --- /dev/null +++ b/target/linux/ar71xx/files/drivers/net/ethernet/atheros/ag71xx/ag71xx_debugfs.c @@ -0,0 +1,280 @@ +/* + * Atheros AR71xx built-in ethernet mac driver + * + * Copyright (C) 2008-2010 Gabor Juhos <juhosg@openwrt.org> + * Copyright (C) 2008 Imre Kaloz <kaloz@openwrt.org> + * + * Based on Atheros' AG7100 driver + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License version 2 as published + * by the Free Software Foundation. + */ + +#include <linux/debugfs.h> + +#include "ag71xx.h" + +static struct dentry *ag71xx_debugfs_root; + +static int ag71xx_debugfs_generic_open(struct inode *inode, struct file *file) +{ + file->private_data = inode->i_private; + return 0; +} + +void ag71xx_debugfs_update_int_stats(struct ag71xx *ag, u32 status) +{ + if (status) + ag->debug.int_stats.total++; + if (status & AG71XX_INT_TX_PS) + ag->debug.int_stats.tx_ps++; + if (status & AG71XX_INT_TX_UR) + ag->debug.int_stats.tx_ur++; + if (status & AG71XX_INT_TX_BE) + ag->debug.int_stats.tx_be++; + if (status & AG71XX_INT_RX_PR) + ag->debug.int_stats.rx_pr++; + if (status & AG71XX_INT_RX_OF) + ag->debug.int_stats.rx_of++; + if (status & AG71XX_INT_RX_BE) + ag->debug.int_stats.rx_be++; +} + +static ssize_t read_file_int_stats(struct file *file, char __user *user_buf, + size_t count, loff_t *ppos) +{ +#define PR_INT_STAT(_label, _field) \ + len += snprintf(buf + len, sizeof(buf) - len, \ + "%20s: %10lu\n", _label, ag->debug.int_stats._field); + + struct ag71xx *ag = file->private_data; + char buf[256]; + unsigned int len = 0; + + PR_INT_STAT("TX Packet Sent", tx_ps); + PR_INT_STAT("TX Underrun", tx_ur); + PR_INT_STAT("TX Bus Error", tx_be); + PR_INT_STAT("RX Packet Received", rx_pr); + PR_INT_STAT("RX Overflow", rx_of); + PR_INT_STAT("RX Bus Error", rx_be); + len += snprintf(buf + len, sizeof(buf) - len, "\n"); + PR_INT_STAT("Total", total); + + return simple_read_from_buffer(user_buf, count, ppos, buf, len); +#undef PR_INT_STAT +} + +static const struct file_operations ag71xx_fops_int_stats = { + .open = ag71xx_debugfs_generic_open, + .read = read_file_int_stats, + .owner = THIS_MODULE +}; + +void ag71xx_debugfs_update_napi_stats(struct ag71xx *ag, int rx, int tx) +{ + struct ag71xx_napi_stats *stats = &ag->debug.napi_stats; + + if (rx) { + stats->rx_count++; + stats->rx_packets += rx; + if (rx <= AG71XX_NAPI_WEIGHT) + stats->rx[rx]++; + if (rx > stats->rx_packets_max) + stats->rx_packets_max = rx; + } + + if (tx) { + stats->tx_count++; + stats->tx_packets += tx; + if (tx <= AG71XX_NAPI_WEIGHT) + stats->tx[tx]++; + if (tx > stats->tx_packets_max) + stats->tx_packets_max = tx; + } +} + +static ssize_t read_file_napi_stats(struct file *file, char __user *user_buf, + size_t count, loff_t *ppos) +{ + struct ag71xx *ag = file->private_data; + struct ag71xx_napi_stats *stats = &ag->debug.napi_stats; + char *buf; + unsigned int buflen; + unsigned int len = 0; + unsigned long rx_avg = 0; + unsigned long tx_avg = 0; + int ret; + int i; + + buflen = 2048; + buf = kmalloc(buflen, GFP_KERNEL); + if (!buf) + return -ENOMEM; + + if (stats->rx_count) + rx_avg = stats->rx_packets / stats->rx_count; + + if (stats->tx_count) + tx_avg = stats->tx_packets / stats->tx_count; + + len += snprintf(buf + len, buflen - len, "%3s %10s %10s\n", + "len", "rx", "tx"); + + for (i = 1; i <= AG71XX_NAPI_WEIGHT; i++) + len += snprintf(buf + len, buflen - len, + "%3d: %10lu %10lu\n", + i, stats->rx[i], stats->tx[i]); + + len += snprintf(buf + len, buflen - len, "\n"); + + len += snprintf(buf + len, buflen - len, "%3s: %10lu %10lu\n", + "sum", stats->rx_count, stats->tx_count); + len += snprintf(buf + len, buflen - len, "%3s: %10lu %10lu\n", + "avg", rx_avg, tx_avg); + len += snprintf(buf + len, buflen - len, "%3s: %10lu %10lu\n", + "max", stats->rx_packets_max, stats->tx_packets_max); + len += snprintf(buf + len, buflen - len, "%3s: %10lu %10lu\n", + "pkt", stats->rx_packets, stats->tx_packets); + + ret = simple_read_from_buffer(user_buf, count, ppos, buf, len); + kfree(buf); + + return ret; +} + +static const struct file_operations ag71xx_fops_napi_stats = { + .open = ag71xx_debugfs_generic_open, + .read = read_file_napi_stats, + .owner = THIS_MODULE +}; + +#define DESC_PRINT_LEN 64 + +static ssize_t read_file_ring(struct file *file, char __user *user_buf, + size_t count, loff_t *ppos, + struct ag71xx *ag, + struct ag71xx_ring *ring, + unsigned desc_reg) +{ + char *buf; + unsigned int buflen; + unsigned int len = 0; + unsigned long flags; + ssize_t ret; + int curr; + int dirty; + u32 desc_hw; + int i; + + buflen = (ring->size * DESC_PRINT_LEN); + buf = kmalloc(buflen, GFP_KERNEL); + if (!buf) + return -ENOMEM; + + len += snprintf(buf + len, buflen - len, + "Idx ... %-8s %-8s %-8s %-8s . %-10s\n", + "desc", "next", "data", "ctrl", "timestamp"); + + spin_lock_irqsave(&ag->lock, flags); + + curr = (ring->curr % ring->size); + dirty = (ring->dirty % ring->size); + desc_hw = ag71xx_rr(ag, desc_reg); + for (i = 0; i < ring->size; i++) { + struct ag71xx_buf *ab = &ring->buf[i]; + u32 desc_dma = ((u32) ring->descs_dma) + i * ring->desc_size; + + len += snprintf(buf + len, buflen - len, + "%3d %c%c%c %08x %08x %08x %08x %c %10lu\n", + i, + (i == curr) ? 'C' : ' ', + (i == dirty) ? 'D' : ' ', + (desc_hw == desc_dma) ? 'H' : ' ', + desc_dma, + ab->desc->next, + ab->desc->data, + ab->desc->ctrl, + (ab->desc->ctrl & DESC_EMPTY) ? 'E' : '*', + ab->timestamp); + } + + spin_unlock_irqrestore(&ag->lock, flags); + + ret = simple_read_from_buffer(user_buf, count, ppos, buf, len); + kfree(buf); + + return ret; +} + +static ssize_t read_file_tx_ring(struct file *file, char __user *user_buf, + size_t count, loff_t *ppos) +{ + struct ag71xx *ag = file->private_data; + + return read_file_ring(file, user_buf, count, ppos, ag, &ag->tx_ring, + AG71XX_REG_TX_DESC); +} + +static const struct file_operations ag71xx_fops_tx_ring = { + .open = ag71xx_debugfs_generic_open, + .read = read_file_tx_ring, + .owner = THIS_MODULE +}; + +static ssize_t read_file_rx_ring(struct file *file, char __user *user_buf, + size_t count, loff_t *ppos) +{ + struct ag71xx *ag = file->private_data; + + return read_file_ring(file, user_buf, count, ppos, ag, &ag->rx_ring, + AG71XX_REG_RX_DESC); +} + +static const struct file_operations ag71xx_fops_rx_ring = { + .open = ag71xx_debugfs_generic_open, + .read = read_file_rx_ring, + .owner = THIS_MODULE +}; + +void ag71xx_debugfs_exit(struct ag71xx *ag) +{ + debugfs_remove_recursive(ag->debug.debugfs_dir); +} + +int ag71xx_debugfs_init(struct ag71xx *ag) +{ + ag->debug.debugfs_dir = debugfs_create_dir(ag->dev->name, + ag71xx_debugfs_root); + if (!ag->debug.debugfs_dir) + return -ENOMEM; + + debugfs_create_file("int_stats", S_IRUGO, ag->debug.debugfs_dir, + ag, &ag71xx_fops_int_stats); + debugfs_create_file("napi_stats", S_IRUGO, ag->debug.debugfs_dir, + ag, &ag71xx_fops_napi_stats); + debugfs_create_file("tx_ring", S_IRUGO, ag->debug.debugfs_dir, + ag, &ag71xx_fops_tx_ring); + debugfs_create_file("rx_ring", S_IRUGO, ag->debug.debugfs_dir, + ag, &ag71xx_fops_rx_ring); + + return 0; +} + +int ag71xx_debugfs_root_init(void) +{ + if (ag71xx_debugfs_root) + return -EBUSY; + + ag71xx_debugfs_root = debugfs_create_dir(KBUILD_MODNAME, NULL); + if (!ag71xx_debugfs_root) + return -ENOENT; + + return 0; +} + +void ag71xx_debugfs_root_exit(void) +{ + debugfs_remove(ag71xx_debugfs_root); + ag71xx_debugfs_root = NULL; +} diff --git a/target/linux/ar71xx/files/drivers/net/ethernet/atheros/ag71xx/ag71xx_ethtool.c b/target/linux/ar71xx/files/drivers/net/ethernet/atheros/ag71xx/ag71xx_ethtool.c new file mode 100644 index 000000000..498fbed1f --- /dev/null +++ b/target/linux/ar71xx/files/drivers/net/ethernet/atheros/ag71xx/ag71xx_ethtool.c @@ -0,0 +1,124 @@ +/* + * Atheros AR71xx built-in ethernet mac driver + * + * Copyright (C) 2008-2010 Gabor Juhos <juhosg@openwrt.org> + * Copyright (C) 2008 Imre Kaloz <kaloz@openwrt.org> + * + * Based on Atheros' AG7100 driver + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License version 2 as published + * by the Free Software Foundation. + */ + +#include "ag71xx.h" + +static int ag71xx_ethtool_get_settings(struct net_device *dev, + struct ethtool_cmd *cmd) +{ + struct ag71xx *ag = netdev_priv(dev); + struct phy_device *phydev = ag->phy_dev; + + if (!phydev) + return -ENODEV; + + return phy_ethtool_gset(phydev, cmd); +} + +static int ag71xx_ethtool_set_settings(struct net_device *dev, + struct ethtool_cmd *cmd) +{ + struct ag71xx *ag = netdev_priv(dev); + struct phy_device *phydev = ag->phy_dev; + + if (!phydev) + return -ENODEV; + + return phy_ethtool_sset(phydev, cmd); +} + +static void ag71xx_ethtool_get_drvinfo(struct net_device *dev, + struct ethtool_drvinfo *info) +{ + struct ag71xx *ag = netdev_priv(dev); + + strcpy(info->driver, ag->pdev->dev.driver->name); + strcpy(info->version, AG71XX_DRV_VERSION); + strcpy(info->bus_info, dev_name(&ag->pdev->dev)); +} + +static u32 ag71xx_ethtool_get_msglevel(struct net_device *dev) +{ + struct ag71xx *ag = netdev_priv(dev); + + return ag->msg_enable; +} + +static void ag71xx_ethtool_set_msglevel(struct net_device *dev, u32 msg_level) +{ + struct ag71xx *ag = netdev_priv(dev); + + ag->msg_enable = msg_level; +} + +static void ag71xx_ethtool_get_ringparam(struct net_device *dev, + struct ethtool_ringparam *er) +{ + struct ag71xx *ag = netdev_priv(dev); + + er->tx_max_pending = AG71XX_TX_RING_SIZE_MAX; + er->rx_max_pending = AG71XX_RX_RING_SIZE_MAX; + er->rx_mini_max_pending = 0; + er->rx_jumbo_max_pending = 0; + + er->tx_pending = ag->tx_ring.size; + er->rx_pending = ag->rx_ring.size; + er->rx_mini_pending = 0; + er->rx_jumbo_pending = 0; +} + +static int ag71xx_ethtool_set_ringparam(struct net_device *dev, + struct ethtool_ringparam *er) +{ + struct ag71xx *ag = netdev_priv(dev); + unsigned tx_size; + unsigned rx_size; + int err; + + if (er->rx_mini_pending != 0|| + er->rx_jumbo_pending != 0 || + er->rx_pending == 0 || + er->tx_pending == 0) + return -EINVAL; + + tx_size = er->tx_pending < AG71XX_TX_RING_SIZE_MAX ? + er->tx_pending : AG71XX_TX_RING_SIZE_MAX; + + rx_size = er->rx_pending < AG71XX_RX_RING_SIZE_MAX ? + er->rx_pending : AG71XX_RX_RING_SIZE_MAX; + + if (netif_running(dev)) { + err = dev->netdev_ops->ndo_stop(dev); + if (err) + return err; + } + + ag->tx_ring.size = tx_size; + ag->rx_ring.size = rx_size; + + if (netif_running(dev)) + err = dev->netdev_ops->ndo_open(dev); + + return err; +} + +struct ethtool_ops ag71xx_ethtool_ops = { + .set_settings = ag71xx_ethtool_set_settings, + .get_settings = ag71xx_ethtool_get_settings, + .get_drvinfo = ag71xx_ethtool_get_drvinfo, + .get_msglevel = ag71xx_ethtool_get_msglevel, + .set_msglevel = ag71xx_ethtool_set_msglevel, + .get_ringparam = ag71xx_ethtool_get_ringparam, + .set_ringparam = ag71xx_ethtool_set_ringparam, + .get_link = ethtool_op_get_link, +}; diff --git a/target/linux/ar71xx/files/drivers/net/ethernet/atheros/ag71xx/ag71xx_main.c b/target/linux/ar71xx/files/drivers/net/ethernet/atheros/ag71xx/ag71xx_main.c new file mode 100644 index 000000000..fb99d2728 --- /dev/null +++ b/target/linux/ar71xx/files/drivers/net/ethernet/atheros/ag71xx/ag71xx_main.c @@ -0,0 +1,1258 @@ +/* + * Atheros AR71xx built-in ethernet mac driver + * + * Copyright (C) 2008-2010 Gabor Juhos <juhosg@openwrt.org> + * Copyright (C) 2008 Imre Kaloz <kaloz@openwrt.org> + * + * Based on Atheros' AG7100 driver + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License version 2 as published + * by the Free Software Foundation. + */ + +#include "ag71xx.h" + +#define AG71XX_DEFAULT_MSG_ENABLE \ + (NETIF_MSG_DRV \ + | NETIF_MSG_PROBE \ + | NETIF_MSG_LINK \ + | NETIF_MSG_TIMER \ + | NETIF_MSG_IFDOWN \ + | NETIF_MSG_IFUP \ + | NETIF_MSG_RX_ERR \ + | NETIF_MSG_TX_ERR) + +static int ag71xx_msg_level = -1; + +module_param_named(msg_level, ag71xx_msg_level, int, 0); +MODULE_PARM_DESC(msg_level, "Message level (-1=defaults,0=none,...,16=all)"); + +static void ag71xx_dump_dma_regs(struct ag71xx *ag) +{ + DBG("%s: dma_tx_ctrl=%08x, dma_tx_desc=%08x, dma_tx_status=%08x\n", + ag->dev->name, + ag71xx_rr(ag, AG71XX_REG_TX_CTRL), + ag71xx_rr(ag, AG71XX_REG_TX_DESC), + ag71xx_rr(ag, AG71XX_REG_TX_STATUS)); + + DBG("%s: dma_rx_ctrl=%08x, dma_rx_desc=%08x, dma_rx_status=%08x\n", + ag->dev->name, + ag71xx_rr(ag, AG71XX_REG_RX_CTRL), + ag71xx_rr(ag, AG71XX_REG_RX_DESC), + ag71xx_rr(ag, AG71XX_REG_RX_STATUS)); +} + +static void ag71xx_dump_regs(struct ag71xx *ag) +{ + DBG("%s: mac_cfg1=%08x, mac_cfg2=%08x, ipg=%08x, hdx=%08x, mfl=%08x\n", + ag->dev->name, + ag71xx_rr(ag, AG71XX_REG_MAC_CFG1), + ag71xx_rr(ag, AG71XX_REG_MAC_CFG2), + ag71xx_rr(ag, AG71XX_REG_MAC_IPG), + ag71xx_rr(ag, AG71XX_REG_MAC_HDX), + ag71xx_rr(ag, AG71XX_REG_MAC_MFL)); + DBG("%s: mac_ifctl=%08x, mac_addr1=%08x, mac_addr2=%08x\n", + ag->dev->name, + ag71xx_rr(ag, AG71XX_REG_MAC_IFCTL), + ag71xx_rr(ag, AG71XX_REG_MAC_ADDR1), + ag71xx_rr(ag, AG71XX_REG_MAC_ADDR2)); + DBG("%s: fifo_cfg0=%08x, fifo_cfg1=%08x, fifo_cfg2=%08x\n", + ag->dev->name, + ag71xx_rr(ag, AG71XX_REG_FIFO_CFG0), + ag71xx_rr(ag, AG71XX_REG_FIFO_CFG1), + ag71xx_rr(ag, AG71XX_REG_FIFO_CFG2)); + DBG("%s: fifo_cfg3=%08x, fifo_cfg4=%08x, fifo_cfg5=%08x\n", + ag->dev->name, + ag71xx_rr(ag, AG71XX_REG_FIFO_CFG3), + ag71xx_rr(ag, AG71XX_REG_FIFO_CFG4), + ag71xx_rr(ag, AG71XX_REG_FIFO_CFG5)); +} + +static inline void ag71xx_dump_intr(struct ag71xx *ag, char *label, u32 intr) +{ + DBG("%s: %s intr=%08x %s%s%s%s%s%s\n", + ag->dev->name, label, intr, + (intr & AG71XX_INT_TX_PS) ? "TXPS " : "", + (intr & AG71XX_INT_TX_UR) ? "TXUR " : "", + (intr & AG71XX_INT_TX_BE) ? "TXBE " : "", + (intr & AG71XX_INT_RX_PR) ? "RXPR " : "", + (intr & AG71XX_INT_RX_OF) ? "RXOF " : "", + (intr & AG71XX_INT_RX_BE) ? "RXBE " : ""); +} + +static void ag71xx_ring_free(struct ag71xx_ring *ring) +{ + kfree(ring->buf); + + if (ring->descs_cpu) + dma_free_coherent(NULL, ring->size * ring->desc_size, + ring->descs_cpu, ring->descs_dma); +} + +static int ag71xx_ring_alloc(struct ag71xx_ring *ring) +{ + int err; + int i; + + ring->desc_size = sizeof(struct ag71xx_desc); + if (ring->desc_size % cache_line_size()) { + DBG("ag71xx: ring %p, desc size %u rounded to %u\n", + ring, ring->desc_size, + roundup(ring->desc_size, cache_line_size())); + ring->desc_size = roundup(ring->desc_size, cache_line_size()); + } + + ring->descs_cpu = dma_alloc_coherent(NULL, ring->size * ring->desc_size, + &ring->descs_dma, GFP_ATOMIC); + if (!ring->descs_cpu) { + err = -ENOMEM; + goto err; + } + + + ring->buf = kzalloc(ring->size * sizeof(*ring->buf), GFP_KERNEL); + if (!ring->buf) { + err = -ENOMEM; + goto err; + } + + for (i = 0; i < ring->size; i++) { + int idx = i * ring->desc_size; + ring->buf[i].desc = (struct ag71xx_desc *)&ring->descs_cpu[idx]; + DBG("ag71xx: ring %p, desc %d at %p\n", + ring, i, ring->buf[i].desc); + } + + return 0; + +err: + return err; +} + +static void ag71xx_ring_tx_clean(struct ag71xx *ag) +{ + struct ag71xx_ring *ring = &ag->tx_ring; + struct net_device *dev = ag->dev; + u32 bytes_compl = 0, pkts_compl = 0; + + while (ring->curr != ring->dirty) { + u32 i = ring->dirty % ring->size; + + if (!ag71xx_desc_empty(ring->buf[i].desc)) { + ring->buf[i].desc->ctrl = 0; + dev->stats.tx_errors++; + } + + if (ring->buf[i].skb) { + bytes_compl += ring->buf[i].skb->len; + pkts_compl++; + dev_kfree_skb_any(ring->buf[i].skb); + } + ring->buf[i].skb = NULL; + ring->dirty++; + } + + /* flush descriptors */ + wmb(); + + netdev_completed_queue(dev, pkts_compl, bytes_compl); +} + +static void ag71xx_ring_tx_init(struct ag71xx *ag) +{ + struct ag71xx_ring *ring = &ag->tx_ring; + int i; + + for (i = 0; i < ring->size; i++) { + ring->buf[i].desc->next = (u32) (ring->descs_dma + + ring->desc_size * ((i + 1) % ring->size)); + + ring->buf[i].desc->ctrl = DESC_EMPTY; + ring->buf[i].skb = NULL; + } + + /* flush descriptors */ + wmb(); + + ring->curr = 0; + ring->dirty = 0; + netdev_reset_queue(ag->dev); +} + +static void ag71xx_ring_rx_clean(struct ag71xx *ag) +{ + struct ag71xx_ring *ring = &ag->rx_ring; + int i; + + if (!ring->buf) + return; + + for (i = 0; i < ring->size; i++) + if (ring->buf[i].rx_buf) { + dma_unmap_single(&ag->dev->dev, ring->buf[i].dma_addr, + AG71XX_RX_BUF_SIZE, DMA_FROM_DEVICE); + kfree(ring->buf[i].rx_buf); + } +} + +static int ag71xx_buffer_offset(struct ag71xx *ag) +{ + int offset = NET_SKB_PAD; + + /* + * On AR71xx/AR91xx packets must be 4-byte aligned. + * + * When using builtin AR8216 support, hardware adds a 2-byte header, + * so we don't need any extra alignment in that case. + */ + if (!ag71xx_get_pdata(ag)->is_ar724x || ag71xx_has_ar8216(ag)) + return offset; + + return offset + NET_IP_ALIGN; +} + +static bool ag71xx_fill_rx_buf(struct ag71xx *ag, struct ag71xx_buf *buf, + int offset) +{ + void *data; + + data = kmalloc(AG71XX_RX_BUF_SIZE + + SKB_DATA_ALIGN(sizeof(struct skb_shared_info)), + GFP_ATOMIC); + if (!data) + return false; + + buf->rx_buf = data; + buf->dma_addr = dma_map_single(&ag->dev->dev, data, + AG71XX_RX_BUF_SIZE, DMA_FROM_DEVICE); + buf->desc->data = (u32) buf->dma_addr + offset; + return true; +} + +static int ag71xx_ring_rx_init(struct ag71xx *ag) +{ + struct ag71xx_ring *ring = &ag->rx_ring; + unsigned int i; + int ret; + int offset = ag71xx_buffer_offset(ag); + + ret = 0; + for (i = 0; i < ring->size; i++) { + ring->buf[i].desc->next = (u32) (ring->descs_dma + + ring->desc_size * ((i + 1) % ring->size)); + + DBG("ag71xx: RX desc at %p, next is %08x\n", + ring->buf[i].desc, + ring->buf[i].desc->next); + } + + for (i = 0; i < ring->size; i++) { + if (!ag71xx_fill_rx_buf(ag, &ring->buf[i], offset)) { + ret = -ENOMEM; + break; + } + + ring->buf[i].desc->ctrl = DESC_EMPTY; + } + + /* flush descriptors */ + wmb(); + + ring->curr = 0; + ring->dirty = 0; + + return ret; +} + +static int ag71xx_ring_rx_refill(struct ag71xx *ag) +{ + struct ag71xx_ring *ring = &ag->rx_ring; + unsigned int count; + int offset = ag71xx_buffer_offset(ag); + + count = 0; + for (; ring->curr - ring->dirty > 0; ring->dirty++) { + unsigned int i; + + i = ring->dirty % ring->size; + + if (!ring->buf[i].rx_buf && + !ag71xx_fill_rx_buf(ag, &ring->buf[i], offset)) + break; + + ring->buf[i].desc->ctrl = DESC_EMPTY; + count++; + } + + /* flush descriptors */ + wmb(); + + DBG("%s: %u rx descriptors refilled\n", ag->dev->name, count); + + return count; +} + +static int ag71xx_rings_init(struct ag71xx *ag) +{ + int ret; + + ret = ag71xx_ring_alloc(&ag->tx_ring); + if (ret) + return ret; + + ag71xx_ring_tx_init(ag); + + ret = ag71xx_ring_alloc(&ag->rx_ring); + if (ret) + return ret; + + ret = ag71xx_ring_rx_init(ag); + return ret; +} + +static void ag71xx_rings_cleanup(struct ag71xx *ag) +{ + ag71xx_ring_rx_clean(ag); + ag71xx_ring_free(&ag->rx_ring); + + ag71xx_ring_tx_clean(ag); + netdev_reset_queue(ag->dev); + ag71xx_ring_free(&ag->tx_ring); +} + +static unsigned char *ag71xx_speed_str(struct ag71xx *ag) +{ + switch (ag->speed) { + case SPEED_1000: + return "1000"; + case SPEED_100: + return "100"; + case SPEED_10: + return "10"; + } + + return "?"; +} + +static void ag71xx_hw_set_macaddr(struct ag71xx *ag, unsigned char *mac) +{ + u32 t; + + t = (((u32) mac[5]) << 24) | (((u32) mac[4]) << 16) + | (((u32) mac[3]) << 8) | ((u32) mac[2]); + + ag71xx_wr(ag, AG71XX_REG_MAC_ADDR1, t); + + t = (((u32) mac[1]) << 24) | (((u32) mac[0]) << 16); + ag71xx_wr(ag, AG71XX_REG_MAC_ADDR2, t); +} + +static void ag71xx_dma_reset(struct ag71xx *ag) +{ + u32 val; + int i; + + ag71xx_dump_dma_regs(ag); + + /* stop RX and TX */ + ag71xx_wr(ag, AG71XX_REG_RX_CTRL, 0); + ag71xx_wr(ag, AG71XX_REG_TX_CTRL, 0); + + /* + * give the hardware some time to really stop all rx/tx activity + * clearing the descriptors too early causes random memory corruption + */ + mdelay(1); + + /* clear descriptor addresses */ + ag71xx_wr(ag, AG71XX_REG_TX_DESC, ag->stop_desc_dma); + ag71xx_wr(ag, AG71XX_REG_RX_DESC, ag->stop_desc_dma); + + /* clear pending RX/TX interrupts */ + for (i = 0; i < 256; i++) { + ag71xx_wr(ag, AG71XX_REG_RX_STATUS, RX_STATUS_PR); + ag71xx_wr(ag, AG71XX_REG_TX_STATUS, TX_STATUS_PS); + } + + /* clear pending errors */ + ag71xx_wr(ag, AG71XX_REG_RX_STATUS, RX_STATUS_BE | RX_STATUS_OF); + ag71xx_wr(ag, AG71XX_REG_TX_STATUS, TX_STATUS_BE | TX_STATUS_UR); + + val = ag71xx_rr(ag, AG71XX_REG_RX_STATUS); + if (val) + pr_alert("%s: unable to clear DMA Rx status: %08x\n", + ag->dev->name, val); + + val = ag71xx_rr(ag, AG71XX_REG_TX_STATUS); + + /* mask out reserved bits */ + val &= ~0xff000000; + + if (val) + pr_alert("%s: unable to clear DMA Tx status: %08x\n", + ag->dev->name, val); + + ag71xx_dump_dma_regs(ag); +} + +#define MAC_CFG1_INIT (MAC_CFG1_RXE | MAC_CFG1_TXE | \ + MAC_CFG1_SRX | MAC_CFG1_STX) + +#define FIFO_CFG0_INIT (FIFO_CFG0_ALL << FIFO_CFG0_ENABLE_SHIFT) + +#define FIFO_CFG4_INIT (FIFO_CFG4_DE | FIFO_CFG4_DV | FIFO_CFG4_FC | \ + FIFO_CFG4_CE | FIFO_CFG4_CR | FIFO_CFG4_LM | \ + FIFO_CFG4_LO | FIFO_CFG4_OK | FIFO_CFG4_MC | \ + FIFO_CFG4_BC | FIFO_CFG4_DR | FIFO_CFG4_LE | \ + FIFO_CFG4_CF | FIFO_CFG4_PF | FIFO_CFG4_UO | \ + FIFO_CFG4_VT) + +#define FIFO_CFG5_INIT (FIFO_CFG5_DE | FIFO_CFG5_DV | FIFO_CFG5_FC | \ + FIFO_CFG5_CE | FIFO_CFG5_LO | FIFO_CFG5_OK | \ + FIFO_CFG5_MC | FIFO_CFG5_BC | FIFO_CFG5_DR | \ + FIFO_CFG5_CF | FIFO_CFG5_PF | FIFO_CFG5_VT | \ + FIFO_CFG5_LE | FIFO_CFG5_FT | FIFO_CFG5_16 | \ + FIFO_CFG5_17 | FIFO_CFG5_SF) + +static void ag71xx_hw_stop(struct ag71xx *ag) +{ + /* disable all interrupts and stop the rx/tx engine */ + ag71xx_wr(ag, AG71XX_REG_INT_ENABLE, 0); + ag71xx_wr(ag, AG71XX_REG_RX_CTRL, 0); + ag71xx_wr(ag, AG71XX_REG_TX_CTRL, 0); +} + +static void ag71xx_hw_setup(struct ag71xx *ag) +{ + struct ag71xx_platform_data *pdata = ag71xx_get_pdata(ag); + + /* setup MAC configuration registers */ + ag71xx_wr(ag, AG71XX_REG_MAC_CFG1, MAC_CFG1_INIT); + + ag71xx_sb(ag, AG71XX_REG_MAC_CFG2, + MAC_CFG2_PAD_CRC_EN | MAC_CFG2_LEN_CHECK); + + /* setup max frame length */ + ag71xx_wr(ag, AG71XX_REG_MAC_MFL, AG71XX_TX_MTU_LEN); + + /* setup FIFO configuration registers */ + ag71xx_wr(ag, AG71XX_REG_FIFO_CFG0, FIFO_CFG0_INIT); + if (pdata->is_ar724x) { + ag71xx_wr(ag, AG71XX_REG_FIFO_CFG1, pdata->fifo_cfg1); + ag71xx_wr(ag, AG71XX_REG_FIFO_CFG2, pdata->fifo_cfg2); + } else { + ag71xx_wr(ag, AG71XX_REG_FIFO_CFG1, 0x0fff0000); + ag71xx_wr(ag, AG71XX_REG_FIFO_CFG2, 0x00001fff); + } + ag71xx_wr(ag, AG71XX_REG_FIFO_CFG4, FIFO_CFG4_INIT); + ag71xx_wr(ag, AG71XX_REG_FIFO_CFG5, FIFO_CFG5_INIT); +} + +static void ag71xx_hw_init(struct ag71xx *ag) +{ + struct ag71xx_platform_data *pdata = ag71xx_get_pdata(ag); + u32 reset_mask = pdata->reset_bit; + + ag71xx_hw_stop(ag); + + if (pdata->is_ar724x) { + u32 reset_phy = reset_mask; + + reset_phy &= AR71XX_RESET_GE0_PHY | AR71XX_RESET_GE1_PHY; + reset_mask &= ~(AR71XX_RESET_GE0_PHY | AR71XX_RESET_GE1_PHY); + + ath79_device_reset_set(reset_phy); + mdelay(50); + ath79_device_reset_clear(reset_phy); + mdelay(200); + } + + ag71xx_sb(ag, AG71XX_REG_MAC_CFG1, MAC_CFG1_SR); + udelay(20); + + ath79_device_reset_set(reset_mask); + mdelay(100); + ath79_device_reset_clear(reset_mask); + mdelay(200); + + ag71xx_hw_setup(ag); + + ag71xx_dma_reset(ag); +} + +static void ag71xx_fast_reset(struct ag71xx *ag) +{ + struct ag71xx_platform_data *pdata = ag71xx_get_pdata(ag); + struct net_device *dev = ag->dev; + u32 reset_mask = pdata->reset_bit; + u32 rx_ds, tx_ds; + u32 mii_reg; + + reset_mask &= AR71XX_RESET_GE0_MAC | AR71XX_RESET_GE1_MAC; + + mii_reg = ag71xx_rr(ag, AG71XX_REG_MII_CFG); + rx_ds = ag71xx_rr(ag, AG71XX_REG_RX_DESC); + tx_ds = ag71xx_rr(ag, AG71XX_REG_TX_DESC); + + ath79_device_reset_set(reset_mask); + udelay(10); + ath79_device_reset_clear(reset_mask); + udelay(10); + + ag71xx_dma_reset(ag); + ag71xx_hw_setup(ag); + + ag71xx_wr(ag, AG71XX_REG_RX_DESC, rx_ds); + ag71xx_wr(ag, AG71XX_REG_TX_DESC, tx_ds); + ag71xx_wr(ag, AG71XX_REG_MII_CFG, mii_reg); + + ag71xx_hw_set_macaddr(ag, dev->dev_addr); +} + +static void ag71xx_hw_start(struct ag71xx *ag) +{ + /* start RX engine */ + ag71xx_wr(ag, AG71XX_REG_RX_CTRL, RX_CTRL_RXE); + + /* enable interrupts */ + ag71xx_wr(ag, AG71XX_REG_INT_ENABLE, AG71XX_INT_INIT); +} + +void ag71xx_link_adjust(struct ag71xx *ag) +{ + struct ag71xx_platform_data *pdata = ag71xx_get_pdata(ag); + u32 cfg2; + u32 ifctl; + u32 fifo5; + + if (!ag->link) { + ag71xx_hw_stop(ag); + netif_carrier_off(ag->dev); + if (netif_msg_link(ag)) + pr_info("%s: link down\n", ag->dev->name); + return; + } + + if (pdata->is_ar724x) + ag71xx_fast_reset(ag); + + cfg2 = ag71xx_rr(ag, AG71XX_REG_MAC_CFG2); + cfg2 &= ~(MAC_CFG2_IF_1000 | MAC_CFG2_IF_10_100 | MAC_CFG2_FDX); + cfg2 |= (ag->duplex) ? MAC_CFG2_FDX : 0; + + ifctl = ag71xx_rr(ag, AG71XX_REG_MAC_IFCTL); + ifctl &= ~(MAC_IFCTL_SPEED); + + fifo5 = ag71xx_rr(ag, AG71XX_REG_FIFO_CFG5); + fifo5 &= ~FIFO_CFG5_BM; + + switch (ag->speed) { + case SPEED_1000: + cfg2 |= MAC_CFG2_IF_1000; + fifo5 |= FIFO_CFG5_BM; + break; + case SPEED_100: + cfg2 |= MAC_CFG2_IF_10_100; + ifctl |= MAC_IFCTL_SPEED; + break; + case SPEED_10: + cfg2 |= MAC_CFG2_IF_10_100; + break; + default: + BUG(); + return; + } + + if (pdata->is_ar91xx) + ag71xx_wr(ag, AG71XX_REG_FIFO_CFG3, 0x00780fff); + else if (pdata->is_ar724x) + ag71xx_wr(ag, AG71XX_REG_FIFO_CFG3, pdata->fifo_cfg3); + else + ag71xx_wr(ag, AG71XX_REG_FIFO_CFG3, 0x008001ff); + + if (pdata->set_speed) + pdata->set_speed(ag->speed); + + ag71xx_wr(ag, AG71XX_REG_MAC_CFG2, cfg2); + ag71xx_wr(ag, AG71XX_REG_FIFO_CFG5, fifo5); + ag71xx_wr(ag, AG71XX_REG_MAC_IFCTL, ifctl); + ag71xx_hw_start(ag); + + netif_carrier_on(ag->dev); + if (netif_msg_link(ag)) + pr_info("%s: link up (%sMbps/%s duplex)\n", + ag->dev->name, + ag71xx_speed_str(ag), + (DUPLEX_FULL == ag->duplex) ? "Full" : "Half"); + + DBG("%s: fifo_cfg0=%#x, fifo_cfg1=%#x, fifo_cfg2=%#x\n", + ag->dev->name, + ag71xx_rr(ag, AG71XX_REG_FIFO_CFG0), + ag71xx_rr(ag, AG71XX_REG_FIFO_CFG1), + ag71xx_rr(ag, AG71XX_REG_FIFO_CFG2)); + + DBG("%s: fifo_cfg3=%#x, fifo_cfg4=%#x, fifo_cfg5=%#x\n", + ag->dev->name, + ag71xx_rr(ag, AG71XX_REG_FIFO_CFG3), + ag71xx_rr(ag, AG71XX_REG_FIFO_CFG4), + ag71xx_rr(ag, AG71XX_REG_FIFO_CFG5)); + + DBG("%s: mac_cfg2=%#x, mac_ifctl=%#x\n", + ag->dev->name, + ag71xx_rr(ag, AG71XX_REG_MAC_CFG2), + ag71xx_rr(ag, AG71XX_REG_MAC_IFCTL)); +} + +static int ag71xx_open(struct net_device *dev) +{ + struct ag71xx *ag = netdev_priv(dev); + int ret; + + ret = ag71xx_rings_init(ag); + if (ret) + goto err; + + napi_enable(&ag->napi); + + netif_carrier_off(dev); + ag71xx_phy_start(ag); + + ag71xx_wr(ag, AG71XX_REG_TX_DESC, ag->tx_ring.descs_dma); + ag71xx_wr(ag, AG71XX_REG_RX_DESC, ag->rx_ring.descs_dma); + + ag71xx_hw_set_macaddr(ag, dev->dev_addr); + + netif_start_queue(dev); + + return 0; + +err: + ag71xx_rings_cleanup(ag); + return ret; +} + +static int ag71xx_stop(struct net_device *dev) +{ + struct ag71xx *ag = netdev_priv(dev); + unsigned long flags; + + netif_carrier_off(dev); + ag71xx_phy_stop(ag); + + spin_lock_irqsave(&ag->lock, flags); + + netif_stop_queue(dev); + + ag71xx_hw_stop(ag); + ag71xx_dma_reset(ag); + + napi_disable(&ag->napi); + del_timer_sync(&ag->oom_timer); + + spin_unlock_irqrestore(&ag->lock, flags); + + ag71xx_rings_cleanup(ag); + + return 0; +} + +static netdev_tx_t ag71xx_hard_start_xmit(struct sk_buff *skb, + struct net_device *dev) +{ + struct ag71xx *ag = netdev_priv(dev); + struct ag71xx_ring *ring = &ag->tx_ring; + struct ag71xx_desc *desc; + dma_addr_t dma_addr; + int i; + + i = ring->curr % ring->size; + desc = ring->buf[i].desc; + + if (!ag71xx_desc_empty(desc)) + goto err_drop; + + if (ag71xx_has_ar8216(ag)) + ag71xx_add_ar8216_header(ag, skb); + + if (skb->len <= 0) { + DBG("%s: packet len is too small\n", ag->dev->name); + goto err_drop; + } + + dma_addr = dma_map_single(&dev->dev, skb->data, skb->len, + DMA_TO_DEVICE); + + netdev_sent_queue(dev, skb->len); + ring->buf[i].skb = skb; + ring->buf[i].timestamp = jiffies; + + /* setup descriptor fields */ + desc->data = (u32) dma_addr; + desc->ctrl = (skb->len & DESC_PKTLEN_M); + + /* flush descriptor */ + wmb(); + + ring->curr++; + if (ring->curr == (ring->dirty + ring->size)) { + DBG("%s: tx queue full\n", ag->dev->name); + netif_stop_queue(dev); + } + + DBG("%s: packet injected into TX queue\n", ag->dev->name); + + /* enable TX engine */ + ag71xx_wr(ag, AG71XX_REG_TX_CTRL, TX_CTRL_TXE); + + return NETDEV_TX_OK; + +err_drop: + dev->stats.tx_dropped++; + + dev_kfree_skb(skb); + return NETDEV_TX_OK; +} + +static int ag71xx_do_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd) +{ + struct ag71xx *ag = netdev_priv(dev); + int ret; + + switch (cmd) { + case SIOCETHTOOL: + if (ag->phy_dev == NULL) + break; + + spin_lock_irq(&ag->lock); + ret = phy_ethtool_ioctl(ag->phy_dev, (void *) ifr->ifr_data); + spin_unlock_irq(&ag->lock); + return ret; + + case SIOCSIFHWADDR: + if (copy_from_user + (dev->dev_addr, ifr->ifr_data, sizeof(dev->dev_addr))) + return -EFAULT; + return 0; + + case SIOCGIFHWADDR: + if (copy_to_user + (ifr->ifr_data, dev->dev_addr, sizeof(dev->dev_addr))) + return -EFAULT; + return 0; + + case SIOCGMIIPHY: + case SIOCGMIIREG: + case SIOCSMIIREG: + if (ag->phy_dev == NULL) + break; + + return phy_mii_ioctl(ag->phy_dev, ifr, cmd); + + default: + break; + } + + return -EOPNOTSUPP; +} + +static void ag71xx_oom_timer_handler(unsigned long data) +{ + struct net_device *dev = (struct net_device *) data; + struct ag71xx *ag = netdev_priv(dev); + + napi_schedule(&ag->napi); +} + +static void ag71xx_tx_timeout(struct net_device *dev) +{ + struct ag71xx *ag = netdev_priv(dev); + + if (netif_msg_tx_err(ag)) + pr_info("%s: tx timeout\n", ag->dev->name); + + schedule_work(&ag->restart_work); +} + +static void ag71xx_restart_work_func(struct work_struct *work) +{ + struct ag71xx *ag = container_of(work, struct ag71xx, restart_work); + + if (ag71xx_get_pdata(ag)->is_ar724x) { + ag->link = 0; + ag71xx_link_adjust(ag); + return; + } + + ag71xx_stop(ag->dev); + ag71xx_open(ag->dev); +} + +static bool ag71xx_check_dma_stuck(struct ag71xx *ag, unsigned long timestamp) +{ + u32 rx_sm, tx_sm, rx_fd; + + if (likely(time_before(jiffies, timestamp + HZ/10))) + return false; + + if (!netif_carrier_ok(ag->dev)) + return false; + + rx_sm = ag71xx_rr(ag, AG71XX_REG_RX_SM); + if ((rx_sm & 0x7) == 0x3 && ((rx_sm >> 4) & 0x7) == 0x6) + return true; + + tx_sm = ag71xx_rr(ag, AG71XX_REG_TX_SM); + rx_fd = ag71xx_rr(ag, AG71XX_REG_FIFO_DEPTH); + if (((tx_sm >> 4) & 0x7) == 0 && ((rx_sm & 0x7) == 0) && + ((rx_sm >> 4) & 0x7) == 0 && rx_fd == 0) + return true; + + return false; +} + +static int ag71xx_tx_packets(struct ag71xx *ag) +{ + struct ag71xx_ring *ring = &ag->tx_ring; + struct ag71xx_platform_data *pdata = ag71xx_get_pdata(ag); + int sent = 0; + int bytes_compl = 0; + + DBG("%s: processing TX ring\n", ag->dev->name); + + while (ring->dirty != ring->curr) { + unsigned int i = ring->dirty % ring->size; + struct ag71xx_desc *desc = ring->buf[i].desc; + struct sk_buff *skb = ring->buf[i].skb; + + if (!ag71xx_desc_empty(desc)) { + if (pdata->is_ar7240 && + ag71xx_check_dma_stuck(ag, ring->buf[i].timestamp)) + schedule_work(&ag->restart_work); + break; + } + + ag71xx_wr(ag, AG71XX_REG_TX_STATUS, TX_STATUS_PS); + + bytes_compl += skb->len; + ag->dev->stats.tx_bytes += skb->len; + ag->dev->stats.tx_packets++; + + dev_kfree_skb_any(skb); + ring->buf[i].skb = NULL; + + ring->dirty++; + sent++; + } + + DBG("%s: %d packets sent out\n", ag->dev->name, sent); + + netdev_completed_queue(ag->dev, sent, bytes_compl); + if ((ring->curr - ring->dirty) < (ring->size * 3) / 4) + netif_wake_queue(ag->dev); + + return sent; +} + +static int ag71xx_rx_packets(struct ag71xx *ag, int limit) +{ + struct net_device *dev = ag->dev; + struct ag71xx_ring *ring = &ag->rx_ring; + int offset = ag71xx_buffer_offset(ag); + int done = 0; + + DBG("%s: rx packets, limit=%d, curr=%u, dirty=%u\n", + dev->name, limit, ring->curr, ring->dirty); + + while (done < limit) { + unsigned int i = ring->curr % ring->size; + struct ag71xx_desc *desc = ring->buf[i].desc; + struct sk_buff *skb; + int pktlen; + int err = 0; + + if (ag71xx_desc_empty(desc)) + break; + + if ((ring->dirty + ring->size) == ring->curr) { + ag71xx_assert(0); + break; + } + + ag71xx_wr(ag, AG71XX_REG_RX_STATUS, RX_STATUS_PR); + + pktlen = ag71xx_desc_pktlen(desc); + pktlen -= ETH_FCS_LEN; + + dma_unmap_single(&dev->dev, ring->buf[i].dma_addr, + AG71XX_RX_BUF_SIZE, DMA_FROM_DEVICE); + + dev->last_rx = jiffies; + dev->stats.rx_packets++; + dev->stats.rx_bytes += pktlen; + + skb = build_skb(ring->buf[i].rx_buf); + if (!skb) { + kfree(ring->buf[i].rx_buf); + goto next; + } + + skb_reserve(skb, offset); + skb_put(skb, pktlen); + + if (ag71xx_has_ar8216(ag)) + err = ag71xx_remove_ar8216_header(ag, skb, pktlen); + + if (err) { + dev->stats.rx_dropped++; + kfree_skb(skb); + } else { + skb->dev = dev; + skb->ip_summed = CHECKSUM_NONE; + skb->protocol = eth_type_trans(skb, dev); + netif_receive_skb(skb); + } + +next: + ring->buf[i].rx_buf = NULL; + done++; + + ring->curr++; + } + + ag71xx_ring_rx_refill(ag); + + DBG("%s: rx finish, curr=%u, dirty=%u, done=%d\n", + dev->name, ring->curr, ring->dirty, done); + + return done; +} + +static int ag71xx_poll(struct napi_struct *napi, int limit) +{ + struct ag71xx *ag = container_of(napi, struct ag71xx, napi); + struct ag71xx_platform_data *pdata = ag71xx_get_pdata(ag); + struct net_device *dev = ag->dev; + struct ag71xx_ring *rx_ring; + unsigned long flags; + u32 status; + int tx_done; + int rx_done; + + pdata->ddr_flush(); + tx_done = ag71xx_tx_packets(ag); + + DBG("%s: processing RX ring\n", dev->name); + rx_done = ag71xx_rx_packets(ag, limit); + + ag71xx_debugfs_update_napi_stats(ag, rx_done, tx_done); + + rx_ring = &ag->rx_ring; + if (rx_ring->buf[rx_ring->dirty % rx_ring->size].rx_buf == NULL) + goto oom; + + status = ag71xx_rr(ag, AG71XX_REG_RX_STATUS); + if (unlikely(status & RX_STATUS_OF)) { + ag71xx_wr(ag, AG71XX_REG_RX_STATUS, RX_STATUS_OF); + dev->stats.rx_fifo_errors++; + + /* restart RX */ + ag71xx_wr(ag, AG71XX_REG_RX_CTRL, RX_CTRL_RXE); + } + + if (rx_done < limit) { + if (status & RX_STATUS_PR) + goto more; + + status = ag71xx_rr(ag, AG71XX_REG_TX_STATUS); + if (status & TX_STATUS_PS) + goto more; + + DBG("%s: disable polling mode, rx=%d, tx=%d,limit=%d\n", + dev->name, rx_done, tx_done, limit); + + napi_complete(napi); + + /* enable interrupts */ + spin_lock_irqsave(&ag->lock, flags); + ag71xx_int_enable(ag, AG71XX_INT_POLL); + spin_unlock_irqrestore(&ag->lock, flags); + return rx_done; + } + +more: + DBG("%s: stay in polling mode, rx=%d, tx=%d, limit=%d\n", + dev->name, rx_done, tx_done, limit); + return rx_done; + +oom: + if (netif_msg_rx_err(ag)) + pr_info("%s: out of memory\n", dev->name); + + mod_timer(&ag->oom_timer, jiffies + AG71XX_OOM_REFILL); + napi_complete(napi); + return 0; +} + +static irqreturn_t ag71xx_interrupt(int irq, void *dev_id) +{ + struct net_device *dev = dev_id; + struct ag71xx *ag = netdev_priv(dev); + u32 status; + + status = ag71xx_rr(ag, AG71XX_REG_INT_STATUS); + ag71xx_dump_intr(ag, "raw", status); + + if (unlikely(!status)) + return IRQ_NONE; + + if (unlikely(status & AG71XX_INT_ERR)) { + if (status & AG71XX_INT_TX_BE) { + ag71xx_wr(ag, AG71XX_REG_TX_STATUS, TX_STATUS_BE); + dev_err(&dev->dev, "TX BUS error\n"); + } + if (status & AG71XX_INT_RX_BE) { + ag71xx_wr(ag, AG71XX_REG_RX_STATUS, RX_STATUS_BE); + dev_err(&dev->dev, "RX BUS error\n"); + } + } + + if (likely(status & AG71XX_INT_POLL)) { + ag71xx_int_disable(ag, AG71XX_INT_POLL); + DBG("%s: enable polling mode\n", dev->name); + napi_schedule(&ag->napi); + } + + ag71xx_debugfs_update_int_stats(ag, status); + + return IRQ_HANDLED; +} + +#ifdef CONFIG_NET_POLL_CONTROLLER +/* + * Polling 'interrupt' - used by things like netconsole to send skbs + * without having to re-enable interrupts. It's not called while + * the interrupt routine is executing. + */ +static void ag71xx_netpoll(struct net_device *dev) +{ + disable_irq(dev->irq); + ag71xx_interrupt(dev->irq, dev); + enable_irq(dev->irq); +} +#endif + +static const struct net_device_ops ag71xx_netdev_ops = { + .ndo_open = ag71xx_open, + .ndo_stop = ag71xx_stop, + .ndo_start_xmit = ag71xx_hard_start_xmit, + .ndo_do_ioctl = ag71xx_do_ioctl, + .ndo_tx_timeout = ag71xx_tx_timeout, + .ndo_change_mtu = eth_change_mtu, + .ndo_set_mac_address = eth_mac_addr, + .ndo_validate_addr = eth_validate_addr, +#ifdef CONFIG_NET_POLL_CONTROLLER + .ndo_poll_controller = ag71xx_netpoll, +#endif +}; + +static int __devinit ag71xx_probe(struct platform_device *pdev) +{ + struct net_device *dev; + struct resource *res; + struct ag71xx *ag; + struct ag71xx_platform_data *pdata; + int err; + + pdata = pdev->dev.platform_data; + if (!pdata) { + dev_err(&pdev->dev, "no platform data specified\n"); + err = -ENXIO; + goto err_out; + } + + if (pdata->mii_bus_dev == NULL) { + dev_err(&pdev->dev, "no MII bus device specified\n"); + err = -EINVAL; + goto err_out; + } + + dev = alloc_etherdev(sizeof(*ag)); + if (!dev) { + dev_err(&pdev->dev, "alloc_etherdev failed\n"); + err = -ENOMEM; + goto err_out; + } + + SET_NETDEV_DEV(dev, &pdev->dev); + + ag = netdev_priv(dev); + ag->pdev = pdev; + ag->dev = dev; + ag->msg_enable = netif_msg_init(ag71xx_msg_level, + AG71XX_DEFAULT_MSG_ENABLE); + spin_lock_init(&ag->lock); + + res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "mac_base"); + if (!res) { + dev_err(&pdev->dev, "no mac_base resource found\n"); + err = -ENXIO; + goto err_out; + } + + ag->mac_base = ioremap_nocache(res->start, res->end - res->start + 1); + if (!ag->mac_base) { + dev_err(&pdev->dev, "unable to ioremap mac_base\n"); + err = -ENOMEM; + goto err_free_dev; + } + + dev->irq = platform_get_irq(pdev, 0); + err = request_irq(dev->irq, ag71xx_interrupt, + IRQF_DISABLED, + dev->name, dev); + if (err) { + dev_err(&pdev->dev, "unable to request IRQ %d\n", dev->irq); + goto err_unmap_base; + } + + dev->base_addr = (unsigned long)ag->mac_base; + dev->netdev_ops = &ag71xx_netdev_ops; + dev->ethtool_ops = &ag71xx_ethtool_ops; + + INIT_WORK(&ag->restart_work, ag71xx_restart_work_func); + + init_timer(&ag->oom_timer); + ag->oom_timer.data = (unsigned long) dev; + ag->oom_timer.function = ag71xx_oom_timer_handler; + + ag->tx_ring.size = AG71XX_TX_RING_SIZE_DEFAULT; + ag->rx_ring.size = AG71XX_RX_RING_SIZE_DEFAULT; + + ag->stop_desc = dma_alloc_coherent(NULL, + sizeof(struct ag71xx_desc), &ag->stop_desc_dma, GFP_KERNEL); + + if (!ag->stop_desc) + goto err_free_irq; + + ag->stop_desc->data = 0; + ag->stop_desc->ctrl = 0; + ag->stop_desc->next = (u32) ag->stop_desc_dma; + + memcpy(dev->dev_addr, pdata->mac_addr, ETH_ALEN); + + netif_napi_add(dev, &ag->napi, ag71xx_poll, AG71XX_NAPI_WEIGHT); + + err = register_netdev(dev); + if (err) { + dev_err(&pdev->dev, "unable to register net device\n"); + goto err_free_desc; + } + + pr_info("%s: Atheros AG71xx at 0x%08lx, irq %d\n", + dev->name, dev->base_addr, dev->irq); + + ag71xx_dump_regs(ag); + + ag71xx_hw_init(ag); + + ag71xx_dump_regs(ag); + + err = ag71xx_phy_connect(ag); + if (err) + goto err_unregister_netdev; + + err = ag71xx_debugfs_init(ag); + if (err) + goto err_phy_disconnect; + + platform_set_drvdata(pdev, dev); + + return 0; + +err_phy_disconnect: + ag71xx_phy_disconnect(ag); +err_unregister_netdev: + unregister_netdev(dev); +err_free_desc: + dma_free_coherent(NULL, sizeof(struct ag71xx_desc), ag->stop_desc, + ag->stop_desc_dma); +err_free_irq: + free_irq(dev->irq, dev); +err_unmap_base: + iounmap(ag->mac_base); +err_free_dev: + kfree(dev); +err_out: + platform_set_drvdata(pdev, NULL); + return err; +} + +static int __devexit ag71xx_remove(struct platform_device *pdev) +{ + struct net_device *dev = platform_get_drvdata(pdev); + + if (dev) { + struct ag71xx *ag = netdev_priv(dev); + + ag71xx_debugfs_exit(ag); + ag71xx_phy_disconnect(ag); + unregister_netdev(dev); + free_irq(dev->irq, dev); + iounmap(ag->mac_base); + kfree(dev); + platform_set_drvdata(pdev, NULL); + } + + return 0; +} + +static struct platform_driver ag71xx_driver = { + .probe = ag71xx_probe, + .remove = __exit_p(ag71xx_remove), + .driver = { + .name = AG71XX_DRV_NAME, + } +}; + +static int __init ag71xx_module_init(void) +{ + int ret; + + ret = ag71xx_debugfs_root_init(); + if (ret) + goto err_out; + + ret = ag71xx_mdio_driver_init(); + if (ret) + goto err_debugfs_exit; + + ret = platform_driver_register(&ag71xx_driver); + if (ret) + goto err_mdio_exit; + + return 0; + +err_mdio_exit: + ag71xx_mdio_driver_exit(); +err_debugfs_exit: + ag71xx_debugfs_root_exit(); +err_out: + return ret; +} + +static void __exit ag71xx_module_exit(void) +{ + platform_driver_unregister(&ag71xx_driver); + ag71xx_mdio_driver_exit(); + ag71xx_debugfs_root_exit(); +} + +module_init(ag71xx_module_init); +module_exit(ag71xx_module_exit); + +MODULE_VERSION(AG71XX_DRV_VERSION); +MODULE_AUTHOR("Gabor Juhos <juhosg@openwrt.org>"); +MODULE_AUTHOR("Imre Kaloz <kaloz@openwrt.org>"); +MODULE_LICENSE("GPL v2"); +MODULE_ALIAS("platform:" AG71XX_DRV_NAME); diff --git a/target/linux/ar71xx/files/drivers/net/ethernet/atheros/ag71xx/ag71xx_mdio.c b/target/linux/ar71xx/files/drivers/net/ethernet/atheros/ag71xx/ag71xx_mdio.c new file mode 100644 index 000000000..e123505c7 --- /dev/null +++ b/target/linux/ar71xx/files/drivers/net/ethernet/atheros/ag71xx/ag71xx_mdio.c @@ -0,0 +1,315 @@ +/* + * Atheros AR71xx built-in ethernet mac driver + * + * Copyright (C) 2008-2010 Gabor Juhos <juhosg@openwrt.org> + * Copyright (C) 2008 Imre Kaloz <kaloz@openwrt.org> + * + * Based on Atheros' AG7100 driver + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License version 2 as published + * by the Free Software Foundation. + */ + +#include "ag71xx.h" + +#define AG71XX_MDIO_RETRY 1000 +#define AG71XX_MDIO_DELAY 5 + +static inline void ag71xx_mdio_wr(struct ag71xx_mdio *am, unsigned reg, + u32 value) +{ + void __iomem *r; + + r = am->mdio_base + reg; + __raw_writel(value, r); + + /* flush write */ + (void) __raw_readl(r); +} + +static inline u32 ag71xx_mdio_rr(struct ag71xx_mdio *am, unsigned reg) +{ + return __raw_readl(am->mdio_base + reg); +} + +static void ag71xx_mdio_dump_regs(struct ag71xx_mdio *am) +{ + DBG("%s: mii_cfg=%08x, mii_cmd=%08x, mii_addr=%08x\n", + am->mii_bus->name, + ag71xx_mdio_rr(am, AG71XX_REG_MII_CFG), + ag71xx_mdio_rr(am, AG71XX_REG_MII_CMD), + ag71xx_mdio_rr(am, AG71XX_REG_MII_ADDR)); + DBG("%s: mii_ctrl=%08x, mii_status=%08x, mii_ind=%08x\n", + am->mii_bus->name, + ag71xx_mdio_rr(am, AG71XX_REG_MII_CTRL), + ag71xx_mdio_rr(am, AG71XX_REG_MII_STATUS), + ag71xx_mdio_rr(am, AG71XX_REG_MII_IND)); +} + +static int ag71xx_mdio_wait_busy(struct ag71xx_mdio *am) +{ + int i; + + for (i = 0; i < AG71XX_MDIO_RETRY; i++) { + u32 busy; + + udelay(AG71XX_MDIO_DELAY); + + busy = ag71xx_mdio_rr(am, AG71XX_REG_MII_IND); + if (!busy) + return 0; + + udelay(AG71XX_MDIO_DELAY); + } + + pr_err("%s: MDIO operation timed out\n", am->mii_bus->name); + + return -ETIMEDOUT; +} + +int ag71xx_mdio_mii_read(struct ag71xx_mdio *am, int addr, int reg) +{ + int err; + int ret; + + err = ag71xx_mdio_wait_busy(am); + if (err) + return 0xffff; + + ag71xx_mdio_wr(am, AG71XX_REG_MII_CMD, MII_CMD_WRITE); + ag71xx_mdio_wr(am, AG71XX_REG_MII_ADDR, + ((addr & 0xff) << MII_ADDR_SHIFT) | (reg & 0xff)); + ag71xx_mdio_wr(am, AG71XX_REG_MII_CMD, MII_CMD_READ); + + err = ag71xx_mdio_wait_busy(am); + if (err) + return 0xffff; + + ret = ag71xx_mdio_rr(am, AG71XX_REG_MII_STATUS) & 0xffff; + ag71xx_mdio_wr(am, AG71XX_REG_MII_CMD, MII_CMD_WRITE); + + DBG("mii_read: addr=%04x, reg=%04x, value=%04x\n", addr, reg, ret); + + return ret; +} + +void ag71xx_mdio_mii_write(struct ag71xx_mdio *am, int addr, int reg, u16 val) +{ + DBG("mii_write: addr=%04x, reg=%04x, value=%04x\n", addr, reg, val); + + ag71xx_mdio_wr(am, AG71XX_REG_MII_ADDR, + ((addr & 0xff) << MII_ADDR_SHIFT) | (reg & 0xff)); + ag71xx_mdio_wr(am, AG71XX_REG_MII_CTRL, val); + + ag71xx_mdio_wait_busy(am); +} + +static const u32 ar71xx_mdio_div_table[] = { + 4, 4, 6, 8, 10, 14, 20, 28, +}; + +static const u32 ar7240_mdio_div_table[] = { + 2, 2, 4, 6, 8, 12, 18, 26, 32, 40, 48, 56, 62, 70, 78, 96, +}; + +static const u32 ar933x_mdio_div_table[] = { + 4, 4, 6, 8, 10, 14, 20, 28, 34, 42, 50, 58, 66, 74, 82, 98, +}; + +static int ag71xx_mdio_get_divider(struct ag71xx_mdio *am, u32 *div) +{ + unsigned long ref_clock, mdio_clock; + const u32 *table; + int ndivs; + int i; + + ref_clock = am->pdata->ref_clock; + mdio_clock = am->pdata->mdio_clock; + + if (!ref_clock || !mdio_clock) + return -EINVAL; + + if (am->pdata->is_ar9330 || am->pdata->is_ar934x) { + table = ar933x_mdio_div_table; + ndivs = ARRAY_SIZE(ar933x_mdio_div_table); + } else if (am->pdata->is_ar7240) { + table = ar7240_mdio_div_table; + ndivs = ARRAY_SIZE(ar7240_mdio_div_table); + } else { + table = ar71xx_mdio_div_table; + ndivs = ARRAY_SIZE(ar71xx_mdio_div_table); + } + + for (i = 0; i < ndivs; i++) { + unsigned long t; + + t = ref_clock / table[i]; + if (t <= mdio_clock) { + *div = i; + return 0; + } + } + + dev_err(&am->mii_bus->dev, "no divider found for %lu/%lu\n", + ref_clock, mdio_clock); + return -ENOENT; +} + +static int ag71xx_mdio_reset(struct mii_bus *bus) +{ + struct ag71xx_mdio *am = bus->priv; + u32 t; + int err; + + err = ag71xx_mdio_get_divider(am, &t); + if (err) { + /* fallback */ + if (am->pdata->is_ar7240) + t = MII_CFG_CLK_DIV_6; + else if (am->pdata->builtin_switch && !am->pdata->is_ar934x) + t = MII_CFG_CLK_DIV_10; + else if (!am->pdata->builtin_switch && am->pdata->is_ar934x) + t = MII_CFG_CLK_DIV_58; + else + t = MII_CFG_CLK_DIV_28; + } + + ag71xx_mdio_wr(am, AG71XX_REG_MII_CFG, t | MII_CFG_RESET); + udelay(100); + + ag71xx_mdio_wr(am, AG71XX_REG_MII_CFG, t); + udelay(100); + + return 0; +} + +static int ag71xx_mdio_read(struct mii_bus *bus, int addr, int reg) +{ + struct ag71xx_mdio *am = bus->priv; + + if (am->pdata->builtin_switch) + return ar7240sw_phy_read(bus, addr, reg); + else + return ag71xx_mdio_mii_read(am, addr, reg); +} + +static int ag71xx_mdio_write(struct mii_bus *bus, int addr, int reg, u16 val) +{ + struct ag71xx_mdio *am = bus->priv; + + if (am->pdata->builtin_switch) + ar7240sw_phy_write(bus, addr, reg, val); + else + ag71xx_mdio_mii_write(am, addr, reg, val); + return 0; +} + +static int __devinit ag71xx_mdio_probe(struct platform_device *pdev) +{ + struct ag71xx_mdio_platform_data *pdata; + struct ag71xx_mdio *am; + struct resource *res; + int i; + int err; + + pdata = pdev->dev.platform_data; + if (!pdata) { + dev_err(&pdev->dev, "no platform data specified\n"); + return -EINVAL; + } + + am = kzalloc(sizeof(*am), GFP_KERNEL); + if (!am) { + err = -ENOMEM; + goto err_out; + } + + am->pdata = pdata; + + res = platform_get_resource(pdev, IORESOURCE_MEM, 0); + if (!res) { + dev_err(&pdev->dev, "no iomem resource found\n"); + err = -ENXIO; + goto err_out; + } + + am->mdio_base = ioremap_nocache(res->start, res->end - res->start + 1); + if (!am->mdio_base) { + dev_err(&pdev->dev, "unable to ioremap registers\n"); + err = -ENOMEM; + goto err_free_mdio; + } + + am->mii_bus = mdiobus_alloc(); + if (am->mii_bus == NULL) { + err = -ENOMEM; + goto err_iounmap; + } + + am->mii_bus->name = "ag71xx_mdio"; + am->mii_bus->read = ag71xx_mdio_read; + am->mii_bus->write = ag71xx_mdio_write; + am->mii_bus->reset = ag71xx_mdio_reset; + am->mii_bus->irq = am->mii_irq; + am->mii_bus->priv = am; + am->mii_bus->parent = &pdev->dev; + snprintf(am->mii_bus->id, MII_BUS_ID_SIZE, "%s", dev_name(&pdev->dev)); + am->mii_bus->phy_mask = pdata->phy_mask; + + for (i = 0; i < PHY_MAX_ADDR; i++) + am->mii_irq[i] = PHY_POLL; + + ag71xx_mdio_wr(am, AG71XX_REG_MAC_CFG1, 0); + + err = mdiobus_register(am->mii_bus); + if (err) + goto err_free_bus; + + ag71xx_mdio_dump_regs(am); + + platform_set_drvdata(pdev, am); + return 0; + +err_free_bus: + mdiobus_free(am->mii_bus); +err_iounmap: + iounmap(am->mdio_base); +err_free_mdio: + kfree(am); +err_out: + return err; +} + +static int __devexit ag71xx_mdio_remove(struct platform_device *pdev) +{ + struct ag71xx_mdio *am = platform_get_drvdata(pdev); + + if (am) { + mdiobus_unregister(am->mii_bus); + mdiobus_free(am->mii_bus); + iounmap(am->mdio_base); + kfree(am); + platform_set_drvdata(pdev, NULL); + } + + return 0; +} + +static struct platform_driver ag71xx_mdio_driver = { + .probe = ag71xx_mdio_probe, + .remove = __exit_p(ag71xx_mdio_remove), + .driver = { + .name = "ag71xx-mdio", + } +}; + +int __init ag71xx_mdio_driver_init(void) +{ + return platform_driver_register(&ag71xx_mdio_driver); +} + +void ag71xx_mdio_driver_exit(void) +{ + platform_driver_unregister(&ag71xx_mdio_driver); +} diff --git a/target/linux/ar71xx/files/drivers/net/ethernet/atheros/ag71xx/ag71xx_phy.c b/target/linux/ar71xx/files/drivers/net/ethernet/atheros/ag71xx/ag71xx_phy.c new file mode 100644 index 000000000..ebdbc5b9a --- /dev/null +++ b/target/linux/ar71xx/files/drivers/net/ethernet/atheros/ag71xx/ag71xx_phy.c @@ -0,0 +1,235 @@ +/* + * Atheros AR71xx built-in ethernet mac driver + * + * Copyright (C) 2008-2010 Gabor Juhos <juhosg@openwrt.org> + * Copyright (C) 2008 Imre Kaloz <kaloz@openwrt.org> + * + * Based on Atheros' AG7100 driver + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License version 2 as published + * by the Free Software Foundation. + */ + +#include "ag71xx.h" + +static void ag71xx_phy_link_adjust(struct net_device *dev) +{ + struct ag71xx *ag = netdev_priv(dev); + struct phy_device *phydev = ag->phy_dev; + unsigned long flags; + int status_change = 0; + + spin_lock_irqsave(&ag->lock, flags); + + if (phydev->link) { + if (ag->duplex != phydev->duplex + || ag->speed != phydev->speed) { + status_change = 1; + } + } + + if (phydev->link != ag->link) + status_change = 1; + + ag->link = phydev->link; + ag->duplex = phydev->duplex; + ag->speed = phydev->speed; + + if (status_change) + ag71xx_link_adjust(ag); + + spin_unlock_irqrestore(&ag->lock, flags); +} + +void ag71xx_phy_start(struct ag71xx *ag) +{ + struct ag71xx_platform_data *pdata = ag71xx_get_pdata(ag); + + if (ag->phy_dev) { + phy_start(ag->phy_dev); + } else if (pdata->switch_data) { + ag71xx_ar7240_start(ag); + } else { + ag->link = 1; + ag71xx_link_adjust(ag); + } +} + +void ag71xx_phy_stop(struct ag71xx *ag) +{ + struct ag71xx_platform_data *pdata = ag71xx_get_pdata(ag); + unsigned long flags; + + if (ag->phy_dev) + phy_stop(ag->phy_dev); + else if (pdata->switch_data) + ag71xx_ar7240_stop(ag); + + spin_lock_irqsave(&ag->lock, flags); + if (ag->link) { + ag->link = 0; + ag71xx_link_adjust(ag); + } + spin_unlock_irqrestore(&ag->lock, flags); +} + +static int ag71xx_phy_connect_fixed(struct ag71xx *ag) +{ + struct net_device *dev = ag->dev; + struct ag71xx_platform_data *pdata = ag71xx_get_pdata(ag); + int ret = 0; + + /* use fixed settings */ + switch (pdata->speed) { + case SPEED_10: + case SPEED_100: + case SPEED_1000: + break; + default: + netdev_err(dev, "invalid speed specified\n"); + ret = -EINVAL; + break; + } + + netdev_dbg(dev, "using fixed link parameters\n"); + + ag->duplex = pdata->duplex; + ag->speed = pdata->speed; + + return ret; +} + +static int ag71xx_phy_connect_multi(struct ag71xx *ag) +{ + struct net_device *dev = ag->dev; + struct ag71xx_platform_data *pdata = ag71xx_get_pdata(ag); + struct phy_device *phydev = NULL; + int phy_addr; + int ret = 0; + + for (phy_addr = 0; phy_addr < PHY_MAX_ADDR; phy_addr++) { + if (!(pdata->phy_mask & (1 << phy_addr))) + continue; + + if (ag->mii_bus->phy_map[phy_addr] == NULL) + continue; + + DBG("%s: PHY found at %s, uid=%08x\n", + dev->name, + dev_name(&ag->mii_bus->phy_map[phy_addr]->dev), + ag->mii_bus->phy_map[phy_addr]->phy_id); + + if (phydev == NULL) + phydev = ag->mii_bus->phy_map[phy_addr]; + } + + if (!phydev) { + netdev_err(dev, "no PHY found with phy_mask=%08x\n", + pdata->phy_mask); + return -ENODEV; + } + + ag->phy_dev = phy_connect(dev, dev_name(&phydev->dev), + &ag71xx_phy_link_adjust, 0, + pdata->phy_if_mode); + + if (IS_ERR(ag->phy_dev)) { + netdev_err(dev, "could not connect to PHY at %s\n", + dev_name(&phydev->dev)); + return PTR_ERR(ag->phy_dev); + } + + /* mask with MAC supported features */ + if (pdata->has_gbit) + phydev->supported &= PHY_GBIT_FEATURES; + else + phydev->supported &= PHY_BASIC_FEATURES; + + phydev->advertising = phydev->supported; + + netdev_info(dev, "connected to PHY at %s [uid=%08x, driver=%s]\n", + dev_name(&phydev->dev), phydev->phy_id, phydev->drv->name); + + ag->link = 0; + ag->speed = 0; + ag->duplex = -1; + + return ret; +} + +static int dev_is_class(struct device *dev, void *class) +{ + if (dev->class != NULL && !strcmp(dev->class->name, class)) + return 1; + + return 0; +} + +static struct device *dev_find_class(struct device *parent, char *class) +{ + if (dev_is_class(parent, class)) { + get_device(parent); + return parent; + } + + return device_find_child(parent, class, dev_is_class); +} + +static struct mii_bus *dev_to_mii_bus(struct device *dev) +{ + struct device *d; + + d = dev_find_class(dev, "mdio_bus"); + if (d != NULL) { + struct mii_bus *bus; + + bus = to_mii_bus(d); + put_device(d); + + return bus; + } + + return NULL; +} + +int __devinit ag71xx_phy_connect(struct ag71xx *ag) +{ + struct ag71xx_platform_data *pdata = ag71xx_get_pdata(ag); + + if (pdata->mii_bus_dev == NULL || + pdata->mii_bus_dev->bus == NULL ) + return ag71xx_phy_connect_fixed(ag); + + ag->mii_bus = dev_to_mii_bus(pdata->mii_bus_dev); + if (ag->mii_bus == NULL) { + netdev_err(ag->dev, "unable to find MII bus on device '%s'\n", + dev_name(pdata->mii_bus_dev)); + return -ENODEV; + } + + /* Reset the mdio bus explicitly */ + if (ag->mii_bus->reset) { + mutex_lock(&ag->mii_bus->mdio_lock); + ag->mii_bus->reset(ag->mii_bus); + mutex_unlock(&ag->mii_bus->mdio_lock); + } + + if (pdata->switch_data) + return ag71xx_ar7240_init(ag); + + if (pdata->phy_mask) + return ag71xx_phy_connect_multi(ag); + + return ag71xx_phy_connect_fixed(ag); +} + +void ag71xx_phy_disconnect(struct ag71xx *ag) +{ + struct ag71xx_platform_data *pdata = ag71xx_get_pdata(ag); + + if (pdata->switch_data) + ag71xx_ar7240_cleanup(ag); + else if (ag->phy_dev) + phy_disconnect(ag->phy_dev); +} diff --git a/target/linux/ar71xx/files/drivers/spi/spi-ap83.c b/target/linux/ar71xx/files/drivers/spi/spi-ap83.c new file mode 100644 index 000000000..33843a6da --- /dev/null +++ b/target/linux/ar71xx/files/drivers/spi/spi-ap83.c @@ -0,0 +1,283 @@ +/* + * Atheros AP83 board specific SPI Controller driver + * + * Copyright (C) 2009 Gabor Juhos <juhosg@openwrt.org> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + * + */ + +#include <linux/kernel.h> +#include <linux/module.h> +#include <linux/init.h> +#include <linux/delay.h> +#include <linux/spinlock.h> +#include <linux/workqueue.h> +#include <linux/platform_device.h> +#include <linux/io.h> +#include <linux/spi/spi.h> +#include <linux/spi/spi_bitbang.h> +#include <linux/bitops.h> +#include <linux/gpio.h> + +#include <asm/mach-ath79/ath79.h> + +#define DRV_DESC "Atheros AP83 board SPI Controller driver" +#define DRV_VERSION "0.1.0" +#define DRV_NAME "ap83-spi" + +#define AP83_SPI_CLK_HIGH (1 << 23) +#define AP83_SPI_CLK_LOW 0 +#define AP83_SPI_MOSI_HIGH (1 << 22) +#define AP83_SPI_MOSI_LOW 0 + +#define AP83_SPI_GPIO_CS 1 +#define AP83_SPI_GPIO_MISO 3 + +struct ap83_spi { + struct spi_bitbang bitbang; + void __iomem *base; + u32 addr; + + struct platform_device *pdev; +}; + +static inline u32 ap83_spi_rr(struct ap83_spi *sp, u32 reg) +{ + return __raw_readl(sp->base + reg); +} + +static inline struct ap83_spi *spidev_to_sp(struct spi_device *spi) +{ + return spi_master_get_devdata(spi->master); +} + +static inline void setsck(struct spi_device *spi, int val) +{ + struct ap83_spi *sp = spidev_to_sp(spi); + + if (val) + sp->addr |= AP83_SPI_CLK_HIGH; + else + sp->addr &= ~AP83_SPI_CLK_HIGH; + + dev_dbg(&spi->dev, "addr=%08x, SCK set to %s\n", + sp->addr, (val) ? "HIGH" : "LOW"); + + ap83_spi_rr(sp, sp->addr); +} + +static inline void setmosi(struct spi_device *spi, int val) +{ + struct ap83_spi *sp = spidev_to_sp(spi); + + if (val) + sp->addr |= AP83_SPI_MOSI_HIGH; + else + sp->addr &= ~AP83_SPI_MOSI_HIGH; + + dev_dbg(&spi->dev, "addr=%08x, MOSI set to %s\n", + sp->addr, (val) ? "HIGH" : "LOW"); + + ap83_spi_rr(sp, sp->addr); +} + +static inline u32 getmiso(struct spi_device *spi) +{ + u32 ret; + + ret = gpio_get_value(AP83_SPI_GPIO_MISO) ? 1 : 0; + dev_dbg(&spi->dev, "get MISO: %d\n", ret); + + return ret; +} + +static inline void do_spidelay(struct spi_device *spi, unsigned nsecs) +{ + ndelay(nsecs); +} + +static void ap83_spi_chipselect(struct spi_device *spi, int on) +{ + struct ap83_spi *sp = spidev_to_sp(spi); + + dev_dbg(&spi->dev, "set CS to %d\n", (on) ? 0 : 1); + + if (on) { + ath79_flash_acquire(); + + sp->addr = 0; + ap83_spi_rr(sp, sp->addr); + + gpio_set_value(AP83_SPI_GPIO_CS, 0); + } else { + gpio_set_value(AP83_SPI_GPIO_CS, 1); + ath79_flash_release(); + } +} + +#define spidelay(nsecs) \ + do { \ + /* Steal the spi_device pointer from our caller. \ + * The bitbang-API should probably get fixed here... */ \ + do_spidelay(spi, nsecs); \ + } while (0) + +#define EXPAND_BITBANG_TXRX +#include <linux/spi/spi_bitbang.h> +#include "spi-bitbang-txrx.h" + +static u32 ap83_spi_txrx_mode0(struct spi_device *spi, + unsigned nsecs, u32 word, u8 bits) +{ + dev_dbg(&spi->dev, "TXRX0 word=%08x, bits=%u\n", word, bits); + return bitbang_txrx_be_cpha0(spi, nsecs, 0, 0, word, bits); +} + +static u32 ap83_spi_txrx_mode1(struct spi_device *spi, + unsigned nsecs, u32 word, u8 bits) +{ + dev_dbg(&spi->dev, "TXRX1 word=%08x, bits=%u\n", word, bits); + return bitbang_txrx_be_cpha1(spi, nsecs, 0, 0, word, bits); +} + +static u32 ap83_spi_txrx_mode2(struct spi_device *spi, + unsigned nsecs, u32 word, u8 bits) +{ + dev_dbg(&spi->dev, "TXRX2 word=%08x, bits=%u\n", word, bits); + return bitbang_txrx_be_cpha0(spi, nsecs, 1, 0, word, bits); +} + +static u32 ap83_spi_txrx_mode3(struct spi_device *spi, + unsigned nsecs, u32 word, u8 bits) +{ + dev_dbg(&spi->dev, "TXRX3 word=%08x, bits=%u\n", word, bits); + return bitbang_txrx_be_cpha1(spi, nsecs, 1, 0, word, bits); +} + +static int ap83_spi_probe(struct platform_device *pdev) +{ + struct spi_master *master; + struct ap83_spi *sp; + struct ap83_spi_platform_data *pdata; + struct resource *r; + int ret; + + ret = gpio_request(AP83_SPI_GPIO_MISO, "spi-miso"); + if (ret) { + dev_err(&pdev->dev, "gpio request failed for MISO\n"); + return ret; + } + + ret = gpio_request(AP83_SPI_GPIO_CS, "spi-cs"); + if (ret) { + dev_err(&pdev->dev, "gpio request failed for CS\n"); + goto err_free_miso; + } + + ret = gpio_direction_input(AP83_SPI_GPIO_MISO); + if (ret) { + dev_err(&pdev->dev, "unable to set direction of MISO\n"); + goto err_free_cs; + } + + ret = gpio_direction_output(AP83_SPI_GPIO_CS, 0); + if (ret) { + dev_err(&pdev->dev, "unable to set direction of CS\n"); + goto err_free_cs; + } + + master = spi_alloc_master(&pdev->dev, sizeof(*sp)); + if (master == NULL) { + dev_err(&pdev->dev, "failed to allocate spi master\n"); + return -ENOMEM; + } + + sp = spi_master_get_devdata(master); + platform_set_drvdata(pdev, sp); + + pdata = pdev->dev.platform_data; + + sp->bitbang.master = spi_master_get(master); + sp->bitbang.chipselect = ap83_spi_chipselect; + sp->bitbang.txrx_word[SPI_MODE_0] = ap83_spi_txrx_mode0; + sp->bitbang.txrx_word[SPI_MODE_1] = ap83_spi_txrx_mode1; + sp->bitbang.txrx_word[SPI_MODE_2] = ap83_spi_txrx_mode2; + sp->bitbang.txrx_word[SPI_MODE_3] = ap83_spi_txrx_mode3; + + sp->bitbang.master->bus_num = pdev->id; + sp->bitbang.master->num_chipselect = 1; + + r = platform_get_resource(pdev, IORESOURCE_MEM, 0); + if (r == NULL) { + ret = -ENOENT; + goto err_spi_put; + } + + sp->base = ioremap_nocache(r->start, r->end - r->start + 1); + if (!sp->base) { + ret = -ENXIO; + goto err_spi_put; + } + + ret = spi_bitbang_start(&sp->bitbang); + if (!ret) + goto err_unmap; + + dev_info(&pdev->dev, "AP83 SPI adapter at %08x\n", r->start); + + return 0; + +err_unmap: + iounmap(sp->base); +err_spi_put: + platform_set_drvdata(pdev, NULL); + spi_master_put(sp->bitbang.master); + +err_free_cs: + gpio_free(AP83_SPI_GPIO_CS); +err_free_miso: + gpio_free(AP83_SPI_GPIO_MISO); + return ret; +} + +static int ap83_spi_remove(struct platform_device *pdev) +{ + struct ap83_spi *sp = platform_get_drvdata(pdev); + + spi_bitbang_stop(&sp->bitbang); + iounmap(sp->base); + platform_set_drvdata(pdev, NULL); + spi_master_put(sp->bitbang.master); + + return 0; +} + +static struct platform_driver ap83_spi_drv = { + .probe = ap83_spi_probe, + .remove = ap83_spi_remove, + .driver = { + .name = DRV_NAME, + .owner = THIS_MODULE, + }, +}; + +static int __init ap83_spi_init(void) +{ + return platform_driver_register(&ap83_spi_drv); +} +module_init(ap83_spi_init); + +static void __exit ap83_spi_exit(void) +{ + platform_driver_unregister(&ap83_spi_drv); +} +module_exit(ap83_spi_exit); + +MODULE_ALIAS("platform:" DRV_NAME); +MODULE_DESCRIPTION(DRV_DESC); +MODULE_VERSION(DRV_VERSION); +MODULE_AUTHOR("Gabor Juhos <juhosg@openwrt.org>"); +MODULE_LICENSE("GPL v2"); diff --git a/target/linux/ar71xx/files/drivers/spi/spi-rb4xx-cpld.c b/target/linux/ar71xx/files/drivers/spi/spi-rb4xx-cpld.c new file mode 100644 index 000000000..4e8ce3105 --- /dev/null +++ b/target/linux/ar71xx/files/drivers/spi/spi-rb4xx-cpld.c @@ -0,0 +1,441 @@ +/* + * SPI driver for the CPLD chip on the Mikrotik RB4xx boards + * + * Copyright (C) 2010 Gabor Juhos <juhosg@openwrt.org> + * + * This file was based on the patches for Linux 2.6.27.39 published by + * MikroTik for their RouterBoard 4xx series devices. + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License version 2 as published + * by the Free Software Foundation. + */ + +#include <linux/types.h> +#include <linux/kernel.h> +#include <linux/module.h> +#include <linux/init.h> +#include <linux/module.h> +#include <linux/device.h> +#include <linux/bitops.h> +#include <linux/spi/spi.h> +#include <linux/gpio.h> +#include <linux/slab.h> + +#include <asm/mach-ath79/rb4xx_cpld.h> + +#define DRV_NAME "spi-rb4xx-cpld" +#define DRV_DESC "RB4xx CPLD driver" +#define DRV_VERSION "0.1.0" + +#define CPLD_CMD_WRITE_NAND 0x08 /* send cmd, n x send data, send indle */ +#define CPLD_CMD_WRITE_CFG 0x09 /* send cmd, n x send cfg */ +#define CPLD_CMD_READ_NAND 0x0a /* send cmd, send idle, n x read data */ +#define CPLD_CMD_READ_FAST 0x0b /* send cmd, 4 x idle, n x read data */ +#define CPLD_CMD_LED5_ON 0x0c /* send cmd */ +#define CPLD_CMD_LED5_OFF 0x0d /* send cmd */ + +struct rb4xx_cpld { + struct spi_device *spi; + struct mutex lock; + struct gpio_chip chip; + unsigned int config; +}; + +static struct rb4xx_cpld *rb4xx_cpld; + +static inline struct rb4xx_cpld *gpio_to_cpld(struct gpio_chip *chip) +{ + return container_of(chip, struct rb4xx_cpld, chip); +} + +static int rb4xx_cpld_write_cmd(struct rb4xx_cpld *cpld, unsigned char cmd) +{ + struct spi_transfer t[1]; + struct spi_message m; + unsigned char tx_buf[1]; + int err; + + spi_message_init(&m); + memset(&t, 0, sizeof(t)); + + t[0].tx_buf = tx_buf; + t[0].len = sizeof(tx_buf); + spi_message_add_tail(&t[0], &m); + + tx_buf[0] = cmd; + + err = spi_sync(cpld->spi, &m); + return err; +} + +static int rb4xx_cpld_write_cfg(struct rb4xx_cpld *cpld, unsigned char config) +{ + struct spi_transfer t[1]; + struct spi_message m; + unsigned char cmd[2]; + int err; + + spi_message_init(&m); + memset(&t, 0, sizeof(t)); + + t[0].tx_buf = cmd; + t[0].len = sizeof(cmd); + spi_message_add_tail(&t[0], &m); + + cmd[0] = CPLD_CMD_WRITE_CFG; + cmd[1] = config; + + err = spi_sync(cpld->spi, &m); + return err; +} + +static int __rb4xx_cpld_change_cfg(struct rb4xx_cpld *cpld, unsigned mask, + unsigned value) +{ + unsigned int config; + int err; + + config = cpld->config & ~mask; + config |= value; + + if ((cpld->config ^ config) & 0xff) { + err = rb4xx_cpld_write_cfg(cpld, config); + if (err) + return err; + } + + if ((cpld->config ^ config) & CPLD_CFG_nLED5) { + err = rb4xx_cpld_write_cmd(cpld, (value) ? CPLD_CMD_LED5_ON : + CPLD_CMD_LED5_OFF); + if (err) + return err; + } + + cpld->config = config; + return 0; +} + +int rb4xx_cpld_change_cfg(unsigned mask, unsigned value) +{ + int ret; + + if (rb4xx_cpld == NULL) + return -ENODEV; + + mutex_lock(&rb4xx_cpld->lock); + ret = __rb4xx_cpld_change_cfg(rb4xx_cpld, mask, value); + mutex_unlock(&rb4xx_cpld->lock); + + return ret; +} +EXPORT_SYMBOL_GPL(rb4xx_cpld_change_cfg); + +int rb4xx_cpld_read_from(unsigned addr, unsigned char *rx_buf, + const unsigned char *verify_buf, unsigned count) +{ + const unsigned char cmd[5] = { + CPLD_CMD_READ_FAST, + (addr >> 16) & 0xff, + (addr >> 8) & 0xff, + addr & 0xff, + 0 + }; + struct spi_transfer t[2] = { + { + .tx_buf = &cmd, + .len = 5, + }, + { + .tx_buf = verify_buf, + .rx_buf = rx_buf, + .len = count, + .verify = (verify_buf != NULL), + }, + }; + struct spi_message m; + + if (rb4xx_cpld == NULL) + return -ENODEV; + + spi_message_init(&m); + m.fast_read = 1; + spi_message_add_tail(&t[0], &m); + spi_message_add_tail(&t[1], &m); + return spi_sync(rb4xx_cpld->spi, &m); +} +EXPORT_SYMBOL_GPL(rb4xx_cpld_read_from); + +#if 0 +int rb4xx_cpld_read(unsigned char *buf, unsigned char *verify_buf, + unsigned count) +{ + struct spi_transfer t[2]; + struct spi_message m; + unsigned char cmd[2]; + + if (rb4xx_cpld == NULL) + return -ENODEV; + + spi_message_init(&m); + memset(&t, 0, sizeof(t)); + + /* send command */ + t[0].tx_buf = cmd; + t[0].len = sizeof(cmd); + spi_message_add_tail(&t[0], &m); + + cmd[0] = CPLD_CMD_READ_NAND; + cmd[1] = 0; + + /* read data */ + t[1].rx_buf = buf; + t[1].len = count; + spi_message_add_tail(&t[1], &m); + + return spi_sync(rb4xx_cpld->spi, &m); +} +#else +int rb4xx_cpld_read(unsigned char *rx_buf, const unsigned char *verify_buf, + unsigned count) +{ + static const unsigned char cmd[2] = { CPLD_CMD_READ_NAND, 0 }; + struct spi_transfer t[2] = { + { + .tx_buf = &cmd, + .len = 2, + }, { + .tx_buf = verify_buf, + .rx_buf = rx_buf, + .len = count, + .verify = (verify_buf != NULL), + }, + }; + struct spi_message m; + + if (rb4xx_cpld == NULL) + return -ENODEV; + + spi_message_init(&m); + spi_message_add_tail(&t[0], &m); + spi_message_add_tail(&t[1], &m); + return spi_sync(rb4xx_cpld->spi, &m); +} +#endif +EXPORT_SYMBOL_GPL(rb4xx_cpld_read); + +int rb4xx_cpld_write(const unsigned char *buf, unsigned count) +{ +#if 0 + struct spi_transfer t[3]; + struct spi_message m; + unsigned char cmd[1]; + + if (rb4xx_cpld == NULL) + return -ENODEV; + + memset(&t, 0, sizeof(t)); + spi_message_init(&m); + + /* send command */ + t[0].tx_buf = cmd; + t[0].len = sizeof(cmd); + spi_message_add_tail(&t[0], &m); + + cmd[0] = CPLD_CMD_WRITE_NAND; + + /* write data */ + t[1].tx_buf = buf; + t[1].len = count; + spi_message_add_tail(&t[1], &m); + + /* send idle */ + t[2].len = 1; + spi_message_add_tail(&t[2], &m); + + return spi_sync(rb4xx_cpld->spi, &m); +#else + static const unsigned char cmd = CPLD_CMD_WRITE_NAND; + struct spi_transfer t[3] = { + { + .tx_buf = &cmd, + .len = 1, + }, { + .tx_buf = buf, + .len = count, + .fast_write = 1, + }, { + .len = 1, + .fast_write = 1, + }, + }; + struct spi_message m; + + if (rb4xx_cpld == NULL) + return -ENODEV; + + spi_message_init(&m); + spi_message_add_tail(&t[0], &m); + spi_message_add_tail(&t[1], &m); + spi_message_add_tail(&t[2], &m); + return spi_sync(rb4xx_cpld->spi, &m); +#endif +} +EXPORT_SYMBOL_GPL(rb4xx_cpld_write); + +static int rb4xx_cpld_gpio_get(struct gpio_chip *chip, unsigned offset) +{ + struct rb4xx_cpld *cpld = gpio_to_cpld(chip); + int ret; + + mutex_lock(&cpld->lock); + ret = (cpld->config >> offset) & 1; + mutex_unlock(&cpld->lock); + + return ret; +} + +static void rb4xx_cpld_gpio_set(struct gpio_chip *chip, unsigned offset, + int value) +{ + struct rb4xx_cpld *cpld = gpio_to_cpld(chip); + + mutex_lock(&cpld->lock); + __rb4xx_cpld_change_cfg(cpld, (1 << offset), !!value << offset); + mutex_unlock(&cpld->lock); +} + +static int rb4xx_cpld_gpio_direction_input(struct gpio_chip *chip, + unsigned offset) +{ + return -EOPNOTSUPP; +} + +static int rb4xx_cpld_gpio_direction_output(struct gpio_chip *chip, + unsigned offset, + int value) +{ + struct rb4xx_cpld *cpld = gpio_to_cpld(chip); + int ret; + + mutex_lock(&cpld->lock); + ret = __rb4xx_cpld_change_cfg(cpld, (1 << offset), !!value << offset); + mutex_unlock(&cpld->lock); + + return ret; +} + +static int rb4xx_cpld_gpio_init(struct rb4xx_cpld *cpld, unsigned int base) +{ + int err; + + /* init config */ + cpld->config = CPLD_CFG_nLED1 | CPLD_CFG_nLED2 | CPLD_CFG_nLED3 | + CPLD_CFG_nLED4 | CPLD_CFG_nCE; + rb4xx_cpld_write_cfg(cpld, cpld->config); + + /* setup GPIO chip */ + cpld->chip.label = DRV_NAME; + + cpld->chip.get = rb4xx_cpld_gpio_get; + cpld->chip.set = rb4xx_cpld_gpio_set; + cpld->chip.direction_input = rb4xx_cpld_gpio_direction_input; + cpld->chip.direction_output = rb4xx_cpld_gpio_direction_output; + + cpld->chip.base = base; + cpld->chip.ngpio = CPLD_NUM_GPIOS; + cpld->chip.can_sleep = 1; + cpld->chip.dev = &cpld->spi->dev; + cpld->chip.owner = THIS_MODULE; + + err = gpiochip_add(&cpld->chip); + if (err) + dev_err(&cpld->spi->dev, "adding GPIO chip failed, err=%d\n", + err); + + return err; +} + +static int __devinit rb4xx_cpld_probe(struct spi_device *spi) +{ + struct rb4xx_cpld *cpld; + struct rb4xx_cpld_platform_data *pdata; + int err; + + pdata = spi->dev.platform_data; + if (!pdata) { + dev_dbg(&spi->dev, "no platform data\n"); + return -EINVAL; + } + + cpld = kzalloc(sizeof(*cpld), GFP_KERNEL); + if (!cpld) { + dev_err(&spi->dev, "no memory for private data\n"); + return -ENOMEM; + } + + mutex_init(&cpld->lock); + cpld->spi = spi_dev_get(spi); + dev_set_drvdata(&spi->dev, cpld); + + spi->mode = SPI_MODE_0; + spi->bits_per_word = 8; + err = spi_setup(spi); + if (err) { + dev_err(&spi->dev, "spi_setup failed, err=%d\n", err); + goto err_drvdata; + } + + err = rb4xx_cpld_gpio_init(cpld, pdata->gpio_base); + if (err) + goto err_drvdata; + + rb4xx_cpld = cpld; + + return 0; + +err_drvdata: + dev_set_drvdata(&spi->dev, NULL); + kfree(cpld); + + return err; +} + +static int __devexit rb4xx_cpld_remove(struct spi_device *spi) +{ + struct rb4xx_cpld *cpld; + + rb4xx_cpld = NULL; + cpld = dev_get_drvdata(&spi->dev); + dev_set_drvdata(&spi->dev, NULL); + kfree(cpld); + + return 0; +} + +static struct spi_driver rb4xx_cpld_driver = { + .driver = { + .name = DRV_NAME, + .bus = &spi_bus_type, + .owner = THIS_MODULE, + }, + .probe = rb4xx_cpld_probe, + .remove = __devexit_p(rb4xx_cpld_remove), +}; + +static int __init rb4xx_cpld_init(void) +{ + return spi_register_driver(&rb4xx_cpld_driver); +} +module_init(rb4xx_cpld_init); + +static void __exit rb4xx_cpld_exit(void) +{ + spi_unregister_driver(&rb4xx_cpld_driver); +} +module_exit(rb4xx_cpld_exit); + +MODULE_DESCRIPTION(DRV_DESC); +MODULE_VERSION(DRV_VERSION); +MODULE_AUTHOR("Gabor Juhos <juhosg@openwrt.org>"); +MODULE_LICENSE("GPL v2"); diff --git a/target/linux/ar71xx/files/drivers/spi/spi-rb4xx.c b/target/linux/ar71xx/files/drivers/spi/spi-rb4xx.c new file mode 100644 index 000000000..56260ffc9 --- /dev/null +++ b/target/linux/ar71xx/files/drivers/spi/spi-rb4xx.c @@ -0,0 +1,507 @@ +/* + * SPI controller driver for the Mikrotik RB4xx boards + * + * Copyright (C) 2010 Gabor Juhos <juhosg@openwrt.org> + * + * This file was based on the patches for Linux 2.6.27.39 published by + * MikroTik for their RouterBoard 4xx series devices. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + * + */ + +#include <linux/clk.h> +#include <linux/err.h> +#include <linux/kernel.h> +#include <linux/module.h> +#include <linux/init.h> +#include <linux/delay.h> +#include <linux/spinlock.h> +#include <linux/workqueue.h> +#include <linux/platform_device.h> +#include <linux/spi/spi.h> + +#include <asm/mach-ath79/ar71xx_regs.h> +#include <asm/mach-ath79/ath79.h> + +#define DRV_NAME "rb4xx-spi" +#define DRV_DESC "Mikrotik RB4xx SPI controller driver" +#define DRV_VERSION "0.1.0" + +#define SPI_CTRL_FASTEST 0x40 +#define SPI_FLASH_HZ 33333334 +#define SPI_CPLD_HZ 33333334 + +#define CPLD_CMD_READ_FAST 0x0b + +#undef RB4XX_SPI_DEBUG + +struct rb4xx_spi { + void __iomem *base; + struct spi_master *master; + + unsigned spi_ctrl_flash; + unsigned spi_ctrl_fread; + + struct clk *ahb_clk; + unsigned long ahb_freq; + + spinlock_t lock; + struct list_head queue; + int busy:1; + int cs_wait; +}; + +static unsigned spi_clk_low = AR71XX_SPI_IOC_CS1; + +#ifdef RB4XX_SPI_DEBUG +static inline void do_spi_delay(void) +{ + ndelay(20000); +} +#else +static inline void do_spi_delay(void) { } +#endif + +static inline void do_spi_init(struct spi_device *spi) +{ + unsigned cs = AR71XX_SPI_IOC_CS0 | AR71XX_SPI_IOC_CS1; + + if (!(spi->mode & SPI_CS_HIGH)) + cs ^= (spi->chip_select == 2) ? AR71XX_SPI_IOC_CS1 : + AR71XX_SPI_IOC_CS0; + + spi_clk_low = cs; +} + +static inline void do_spi_finish(void __iomem *base) +{ + do_spi_delay(); + __raw_writel(AR71XX_SPI_IOC_CS0 | AR71XX_SPI_IOC_CS1, + base + AR71XX_SPI_REG_IOC); +} + +static inline void do_spi_clk(void __iomem *base, int bit) +{ + unsigned bval = spi_clk_low | ((bit & 1) ? AR71XX_SPI_IOC_DO : 0); + + do_spi_delay(); + __raw_writel(bval, base + AR71XX_SPI_REG_IOC); + do_spi_delay(); + __raw_writel(bval | AR71XX_SPI_IOC_CLK, base + AR71XX_SPI_REG_IOC); +} + +static void do_spi_byte(void __iomem *base, unsigned char byte) +{ + do_spi_clk(base, byte >> 7); + do_spi_clk(base, byte >> 6); + do_spi_clk(base, byte >> 5); + do_spi_clk(base, byte >> 4); + do_spi_clk(base, byte >> 3); + do_spi_clk(base, byte >> 2); + do_spi_clk(base, byte >> 1); + do_spi_clk(base, byte); + + pr_debug("spi_byte sent 0x%02x got 0x%02x\n", + (unsigned)byte, + (unsigned char)__raw_readl(base + AR71XX_SPI_REG_RDS)); +} + +static inline void do_spi_clk_fast(void __iomem *base, unsigned bit1, + unsigned bit2) +{ + unsigned bval = (spi_clk_low | + ((bit1 & 1) ? AR71XX_SPI_IOC_DO : 0) | + ((bit2 & 1) ? AR71XX_SPI_IOC_CS2 : 0)); + do_spi_delay(); + __raw_writel(bval, base + AR71XX_SPI_REG_IOC); + do_spi_delay(); + __raw_writel(bval | AR71XX_SPI_IOC_CLK, base + AR71XX_SPI_REG_IOC); +} + +static void do_spi_byte_fast(void __iomem *base, unsigned char byte) +{ + do_spi_clk_fast(base, byte >> 7, byte >> 6); + do_spi_clk_fast(base, byte >> 5, byte >> 4); + do_spi_clk_fast(base, byte >> 3, byte >> 2); + do_spi_clk_fast(base, byte >> 1, byte >> 0); + + pr_debug("spi_byte_fast sent 0x%02x got 0x%02x\n", + (unsigned)byte, + (unsigned char) __raw_readl(base + AR71XX_SPI_REG_RDS)); +} + +static int rb4xx_spi_txrx(void __iomem *base, struct spi_transfer *t) +{ + const unsigned char *rxv_ptr = NULL; + const unsigned char *tx_ptr = t->tx_buf; + unsigned char *rx_ptr = t->rx_buf; + unsigned i; + + pr_debug("spi_txrx len %u tx %u rx %u\n", + t->len, + (t->tx_buf ? 1 : 0), + (t->rx_buf ? 1 : 0)); + + if (t->verify) { + rxv_ptr = tx_ptr; + tx_ptr = NULL; + } + + for (i = 0; i < t->len; ++i) { + unsigned char sdata = tx_ptr ? tx_ptr[i] : 0; + + if (t->fast_write) + do_spi_byte_fast(base, sdata); + else + do_spi_byte(base, sdata); + + if (rx_ptr) { + rx_ptr[i] = __raw_readl(base + AR71XX_SPI_REG_RDS) & 0xff; + } else if (rxv_ptr) { + unsigned char c = __raw_readl(base + AR71XX_SPI_REG_RDS); + if (rxv_ptr[i] != c) + return i; + } + } + + return i; +} + +static int rb4xx_spi_read_fast(struct rb4xx_spi *rbspi, + struct spi_message *m) +{ + struct spi_transfer *t; + const unsigned char *tx_ptr; + unsigned addr; + void __iomem *base = rbspi->base; + + /* check for exactly two transfers */ + if (list_empty(&m->transfers) || + list_is_last(m->transfers.next, &m->transfers) || + !list_is_last(m->transfers.next->next, &m->transfers)) { + return -1; + } + + /* first transfer contains command and address */ + t = list_entry(m->transfers.next, + struct spi_transfer, transfer_list); + + if (t->len != 5 || t->tx_buf == NULL) + return -1; + + tx_ptr = t->tx_buf; + if (tx_ptr[0] != CPLD_CMD_READ_FAST) + return -1; + + addr = tx_ptr[1]; + addr = tx_ptr[2] | (addr << 8); + addr = tx_ptr[3] | (addr << 8); + addr += (unsigned) base; + + m->actual_length += t->len; + + /* second transfer contains data itself */ + t = list_entry(m->transfers.next->next, + struct spi_transfer, transfer_list); + + if (t->tx_buf && !t->verify) + return -1; + + __raw_writel(AR71XX_SPI_FS_GPIO, base + AR71XX_SPI_REG_FS); + __raw_writel(rbspi->spi_ctrl_fread, base + AR71XX_SPI_REG_CTRL); + __raw_writel(0, base + AR71XX_SPI_REG_FS); + + if (t->rx_buf) { + memcpy(t->rx_buf, (const void *)addr, t->len); + } else if (t->tx_buf) { + unsigned char buf[t->len]; + memcpy(buf, (const void *)addr, t->len); + if (memcmp(t->tx_buf, buf, t->len) != 0) + m->status = -EMSGSIZE; + } + m->actual_length += t->len; + + if (rbspi->spi_ctrl_flash != rbspi->spi_ctrl_fread) { + __raw_writel(AR71XX_SPI_FS_GPIO, base + AR71XX_SPI_REG_FS); + __raw_writel(rbspi->spi_ctrl_flash, base + AR71XX_SPI_REG_CTRL); + __raw_writel(0, base + AR71XX_SPI_REG_FS); + } + + return 0; +} + +static int rb4xx_spi_msg(struct rb4xx_spi *rbspi, struct spi_message *m) +{ + struct spi_transfer *t = NULL; + void __iomem *base = rbspi->base; + + m->status = 0; + if (list_empty(&m->transfers)) + return -1; + + if (m->fast_read) + if (rb4xx_spi_read_fast(rbspi, m) == 0) + return -1; + + __raw_writel(AR71XX_SPI_FS_GPIO, base + AR71XX_SPI_REG_FS); + __raw_writel(SPI_CTRL_FASTEST, base + AR71XX_SPI_REG_CTRL); + do_spi_init(m->spi); + + list_for_each_entry(t, &m->transfers, transfer_list) { + int len; + + len = rb4xx_spi_txrx(base, t); + if (len != t->len) { + m->status = -EMSGSIZE; + break; + } + m->actual_length += len; + + if (t->cs_change) { + if (list_is_last(&t->transfer_list, &m->transfers)) { + /* wait for continuation */ + return m->spi->chip_select; + } + do_spi_finish(base); + ndelay(100); + } + } + + do_spi_finish(base); + __raw_writel(rbspi->spi_ctrl_flash, base + AR71XX_SPI_REG_CTRL); + __raw_writel(0, base + AR71XX_SPI_REG_FS); + return -1; +} + +static void rb4xx_spi_process_queue_locked(struct rb4xx_spi *rbspi, + unsigned long *flags) +{ + int cs = rbspi->cs_wait; + + rbspi->busy = 1; + while (!list_empty(&rbspi->queue)) { + struct spi_message *m; + + list_for_each_entry(m, &rbspi->queue, queue) + if (cs < 0 || cs == m->spi->chip_select) + break; + + if (&m->queue == &rbspi->queue) + break; + + list_del_init(&m->queue); + spin_unlock_irqrestore(&rbspi->lock, *flags); + + cs = rb4xx_spi_msg(rbspi, m); + m->complete(m->context); + + spin_lock_irqsave(&rbspi->lock, *flags); + } + + rbspi->cs_wait = cs; + rbspi->busy = 0; + + if (cs >= 0) { + /* TODO: add timer to unlock cs after 1s inactivity */ + } +} + +static int rb4xx_spi_transfer(struct spi_device *spi, + struct spi_message *m) +{ + struct rb4xx_spi *rbspi = spi_master_get_devdata(spi->master); + unsigned long flags; + + m->actual_length = 0; + m->status = -EINPROGRESS; + + spin_lock_irqsave(&rbspi->lock, flags); + list_add_tail(&m->queue, &rbspi->queue); + if (rbspi->busy || + (rbspi->cs_wait >= 0 && rbspi->cs_wait != m->spi->chip_select)) { + /* job will be done later */ + spin_unlock_irqrestore(&rbspi->lock, flags); + return 0; + } + + /* process job in current context */ + rb4xx_spi_process_queue_locked(rbspi, &flags); + spin_unlock_irqrestore(&rbspi->lock, flags); + + return 0; +} + +static int rb4xx_spi_setup(struct spi_device *spi) +{ + struct rb4xx_spi *rbspi = spi_master_get_devdata(spi->master); + unsigned long flags; + + if (spi->mode & ~(SPI_CS_HIGH)) { + dev_err(&spi->dev, "mode %x not supported\n", + (unsigned) spi->mode); + return -EINVAL; + } + + if (spi->bits_per_word != 8 && spi->bits_per_word != 0) { + dev_err(&spi->dev, "bits_per_word %u not supported\n", + (unsigned) spi->bits_per_word); + return -EINVAL; + } + + spin_lock_irqsave(&rbspi->lock, flags); + if (rbspi->cs_wait == spi->chip_select && !rbspi->busy) { + rbspi->cs_wait = -1; + rb4xx_spi_process_queue_locked(rbspi, &flags); + } + spin_unlock_irqrestore(&rbspi->lock, flags); + + return 0; +} + +static unsigned get_spi_ctrl(struct rb4xx_spi *rbspi, unsigned hz_max, + const char *name) +{ + unsigned div; + + div = (rbspi->ahb_freq - 1) / (2 * hz_max); + + /* + * CPU has a bug at (div == 0) - first bit read is random + */ + if (div == 0) + ++div; + + if (name) { + unsigned ahb_khz = (rbspi->ahb_freq + 500) / 1000; + unsigned div_real = 2 * (div + 1); + pr_debug("rb4xx: %s SPI clock %u kHz (AHB %u kHz / %u)\n", + name, + ahb_khz / div_real, + ahb_khz, div_real); + } + + return SPI_CTRL_FASTEST + div; +} + +static int rb4xx_spi_probe(struct platform_device *pdev) +{ + struct spi_master *master; + struct rb4xx_spi *rbspi; + struct resource *r; + int err = 0; + + master = spi_alloc_master(&pdev->dev, sizeof(*rbspi)); + if (master == NULL) { + dev_err(&pdev->dev, "no memory for spi_master\n"); + err = -ENOMEM; + goto err_out; + } + + master->bus_num = 0; + master->num_chipselect = 3; + master->setup = rb4xx_spi_setup; + master->transfer = rb4xx_spi_transfer; + + rbspi = spi_master_get_devdata(master); + + rbspi->ahb_clk = clk_get(&pdev->dev, "ahb"); + if (IS_ERR(rbspi->ahb_clk)) { + err = PTR_ERR(rbspi->ahb_clk); + goto err_put_master; + } + + err = clk_enable(rbspi->ahb_clk); + if (err) + goto err_clk_put; + + rbspi->ahb_freq = clk_get_rate(rbspi->ahb_clk); + if (!rbspi->ahb_freq) { + err = -EINVAL; + goto err_clk_disable; + } + + platform_set_drvdata(pdev, rbspi); + + r = platform_get_resource(pdev, IORESOURCE_MEM, 0); + if (r == NULL) { + err = -ENOENT; + goto err_clk_disable; + } + + rbspi->base = ioremap(r->start, r->end - r->start + 1); + if (!rbspi->base) { + err = -ENXIO; + goto err_clk_disable; + } + + rbspi->master = master; + rbspi->spi_ctrl_flash = get_spi_ctrl(rbspi, SPI_FLASH_HZ, "FLASH"); + rbspi->spi_ctrl_fread = get_spi_ctrl(rbspi, SPI_CPLD_HZ, "CPLD"); + rbspi->cs_wait = -1; + + spin_lock_init(&rbspi->lock); + INIT_LIST_HEAD(&rbspi->queue); + + err = spi_register_master(master); + if (err) { + dev_err(&pdev->dev, "failed to register SPI master\n"); + goto err_iounmap; + } + + return 0; + +err_iounmap: + iounmap(rbspi->base); +err_clk_disable: + clk_disable(rbspi->ahb_clk); +err_clk_put: + clk_put(rbspi->ahb_clk); +err_put_master: + platform_set_drvdata(pdev, NULL); + spi_master_put(master); +err_out: + return err; +} + +static int rb4xx_spi_remove(struct platform_device *pdev) +{ + struct rb4xx_spi *rbspi = platform_get_drvdata(pdev); + + iounmap(rbspi->base); + clk_disable(rbspi->ahb_clk); + clk_put(rbspi->ahb_clk); + platform_set_drvdata(pdev, NULL); + spi_master_put(rbspi->master); + + return 0; +} + +static struct platform_driver rb4xx_spi_drv = { + .probe = rb4xx_spi_probe, + .remove = rb4xx_spi_remove, + .driver = { + .name = DRV_NAME, + .owner = THIS_MODULE, + }, +}; + +static int __init rb4xx_spi_init(void) +{ + return platform_driver_register(&rb4xx_spi_drv); +} +subsys_initcall(rb4xx_spi_init); + +static void __exit rb4xx_spi_exit(void) +{ + platform_driver_unregister(&rb4xx_spi_drv); +} + +module_exit(rb4xx_spi_exit); + +MODULE_DESCRIPTION(DRV_DESC); +MODULE_VERSION(DRV_VERSION); +MODULE_AUTHOR("Gabor Juhos <juhosg@openwrt.org>"); +MODULE_LICENSE("GPL v2"); diff --git a/target/linux/ar71xx/files/drivers/spi/spi-vsc7385.c b/target/linux/ar71xx/files/drivers/spi/spi-vsc7385.c new file mode 100644 index 000000000..9340df268 --- /dev/null +++ b/target/linux/ar71xx/files/drivers/spi/spi-vsc7385.c @@ -0,0 +1,621 @@ +/* + * SPI driver for the Vitesse VSC7385 ethernet switch + * + * Copyright (C) 2009 Gabor Juhos <juhosg@openwrt.org> + * + * Parts of this file are based on Atheros' 2.6.15 BSP + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License version 2 as published + * by the Free Software Foundation. + */ + +#include <linux/types.h> +#include <linux/kernel.h> +#include <linux/init.h> +#include <linux/module.h> +#include <linux/delay.h> +#include <linux/device.h> +#include <linux/bitops.h> +#include <linux/firmware.h> +#include <linux/spi/spi.h> +#include <linux/spi/vsc7385.h> + +#define DRV_NAME "spi-vsc7385" +#define DRV_DESC "Vitesse VSC7385 Gbit ethernet switch driver" +#define DRV_VERSION "0.1.0" + +#define VSC73XX_BLOCK_MAC 0x1 +#define VSC73XX_BLOCK_2 0x2 +#define VSC73XX_BLOCK_MII 0x3 +#define VSC73XX_BLOCK_4 0x4 +#define VSC73XX_BLOCK_5 0x5 +#define VSC73XX_BLOCK_SYSTEM 0x7 + +#define VSC73XX_SUBBLOCK_PORT_0 0 +#define VSC73XX_SUBBLOCK_PORT_1 1 +#define VSC73XX_SUBBLOCK_PORT_2 2 +#define VSC73XX_SUBBLOCK_PORT_3 3 +#define VSC73XX_SUBBLOCK_PORT_4 4 +#define VSC73XX_SUBBLOCK_PORT_MAC 6 + +/* MAC Block registers */ +#define VSC73XX_MAC_CFG 0x0 +#define VSC73XX_ADVPORTM 0x19 +#define VSC73XX_RXOCT 0x50 +#define VSC73XX_TXOCT 0x51 +#define VSC73XX_C_RX0 0x52 +#define VSC73XX_C_RX1 0x53 +#define VSC73XX_C_RX2 0x54 +#define VSC73XX_C_TX0 0x55 +#define VSC73XX_C_TX1 0x56 +#define VSC73XX_C_TX2 0x57 +#define VSC73XX_C_CFG 0x58 + +/* MAC_CFG register bits */ +#define VSC73XX_MAC_CFG_WEXC_DIS (1 << 31) +#define VSC73XX_MAC_CFG_PORT_RST (1 << 29) +#define VSC73XX_MAC_CFG_TX_EN (1 << 28) +#define VSC73XX_MAC_CFG_SEED_LOAD (1 << 27) +#define VSC73XX_MAC_CFG_FDX (1 << 18) +#define VSC73XX_MAC_CFG_GIGE (1 << 17) +#define VSC73XX_MAC_CFG_RX_EN (1 << 16) +#define VSC73XX_MAC_CFG_VLAN_DBLAWR (1 << 15) +#define VSC73XX_MAC_CFG_VLAN_AWR (1 << 14) +#define VSC73XX_MAC_CFG_100_BASE_T (1 << 13) +#define VSC73XX_MAC_CFG_TX_IPG(x) (((x) & 0x1f) << 6) +#define VSC73XX_MAC_CFG_MAC_RX_RST (1 << 5) +#define VSC73XX_MAC_CFG_MAC_TX_RST (1 << 4) +#define VSC73XX_MAC_CFG_BIT2 (1 << 2) +#define VSC73XX_MAC_CFG_CLK_SEL(x) ((x) & 0x3) + +/* ADVPORTM register bits */ +#define VSC73XX_ADVPORTM_IFG_PPM (1 << 7) +#define VSC73XX_ADVPORTM_EXC_COL_CONT (1 << 6) +#define VSC73XX_ADVPORTM_EXT_PORT (1 << 5) +#define VSC73XX_ADVPORTM_INV_GTX (1 << 4) +#define VSC73XX_ADVPORTM_ENA_GTX (1 << 3) +#define VSC73XX_ADVPORTM_DDR_MODE (1 << 2) +#define VSC73XX_ADVPORTM_IO_LOOPBACK (1 << 1) +#define VSC73XX_ADVPORTM_HOST_LOOPBACK (1 << 0) + +/* MII Block registers */ +#define VSC73XX_MII_STAT 0x0 +#define VSC73XX_MII_CMD 0x1 +#define VSC73XX_MII_DATA 0x2 + +/* System Block registers */ +#define VSC73XX_ICPU_SIPAD 0x01 +#define VSC73XX_ICPU_CLOCK_DELAY 0x05 +#define VSC73XX_ICPU_CTRL 0x10 +#define VSC73XX_ICPU_ADDR 0x11 +#define VSC73XX_ICPU_SRAM 0x12 +#define VSC73XX_ICPU_MBOX_VAL 0x15 +#define VSC73XX_ICPU_MBOX_SET 0x16 +#define VSC73XX_ICPU_MBOX_CLR 0x17 +#define VSC73XX_ICPU_CHIPID 0x18 +#define VSC73XX_ICPU_GPIO 0x34 + +#define VSC73XX_ICPU_CTRL_CLK_DIV (1 << 8) +#define VSC73XX_ICPU_CTRL_SRST_HOLD (1 << 7) +#define VSC73XX_ICPU_CTRL_BOOT_EN (1 << 3) +#define VSC73XX_ICPU_CTRL_EXT_ACC_EN (1 << 2) +#define VSC73XX_ICPU_CTRL_CLK_EN (1 << 1) +#define VSC73XX_ICPU_CTRL_SRST (1 << 0) + +#define VSC73XX_ICPU_CHIPID_ID_SHIFT 12 +#define VSC73XX_ICPU_CHIPID_ID_MASK 0xffff +#define VSC73XX_ICPU_CHIPID_REV_SHIFT 28 +#define VSC73XX_ICPU_CHIPID_REV_MASK 0xf +#define VSC73XX_ICPU_CHIPID_ID_7385 0x7385 +#define VSC73XX_ICPU_CHIPID_ID_7395 0x7395 + +#define VSC73XX_CMD_MODE_READ 0 +#define VSC73XX_CMD_MODE_WRITE 1 +#define VSC73XX_CMD_MODE_SHIFT 4 +#define VSC73XX_CMD_BLOCK_SHIFT 5 +#define VSC73XX_CMD_BLOCK_MASK 0x7 +#define VSC73XX_CMD_SUBBLOCK_MASK 0xf + +#define VSC7385_CLOCK_DELAY ((3 << 4) | 3) +#define VSC7385_CLOCK_DELAY_MASK ((3 << 4) | 3) + +#define VSC73XX_ICPU_CTRL_STOP (VSC73XX_ICPU_CTRL_SRST_HOLD | \ + VSC73XX_ICPU_CTRL_BOOT_EN | \ + VSC73XX_ICPU_CTRL_EXT_ACC_EN) + +#define VSC73XX_ICPU_CTRL_START (VSC73XX_ICPU_CTRL_CLK_DIV | \ + VSC73XX_ICPU_CTRL_BOOT_EN | \ + VSC73XX_ICPU_CTRL_CLK_EN | \ + VSC73XX_ICPU_CTRL_SRST) + +#define VSC7385_ADVPORTM_MASK (VSC73XX_ADVPORTM_IFG_PPM | \ + VSC73XX_ADVPORTM_EXC_COL_CONT | \ + VSC73XX_ADVPORTM_EXT_PORT | \ + VSC73XX_ADVPORTM_INV_GTX | \ + VSC73XX_ADVPORTM_ENA_GTX | \ + VSC73XX_ADVPORTM_DDR_MODE | \ + VSC73XX_ADVPORTM_IO_LOOPBACK | \ + VSC73XX_ADVPORTM_HOST_LOOPBACK) + +#define VSC7385_ADVPORTM_INIT (VSC73XX_ADVPORTM_EXT_PORT | \ + VSC73XX_ADVPORTM_ENA_GTX | \ + VSC73XX_ADVPORTM_DDR_MODE) + +#define VSC7385_MAC_CFG_RESET (VSC73XX_MAC_CFG_PORT_RST | \ + VSC73XX_MAC_CFG_MAC_RX_RST | \ + VSC73XX_MAC_CFG_MAC_TX_RST) + +#define VSC73XX_MAC_CFG_INIT (VSC73XX_MAC_CFG_TX_EN | \ + VSC73XX_MAC_CFG_FDX | \ + VSC73XX_MAC_CFG_GIGE | \ + VSC73XX_MAC_CFG_RX_EN) + +#define VSC73XX_RESET_DELAY 100 + +struct vsc7385 { + struct spi_device *spi; + struct mutex lock; + struct vsc7385_platform_data *pdata; +}; + +static int vsc7385_is_addr_valid(u8 block, u8 subblock) +{ + switch (block) { + case VSC73XX_BLOCK_MAC: + switch (subblock) { + case 0 ... 4: + case 6: + return 1; + } + break; + + case VSC73XX_BLOCK_2: + case VSC73XX_BLOCK_SYSTEM: + switch (subblock) { + case 0: + return 1; + } + break; + + case VSC73XX_BLOCK_MII: + case VSC73XX_BLOCK_4: + case VSC73XX_BLOCK_5: + switch (subblock) { + case 0 ... 1: + return 1; + } + break; + } + + return 0; +} + +static inline u8 vsc7385_make_addr(u8 mode, u8 block, u8 subblock) +{ + u8 ret; + + ret = (block & VSC73XX_CMD_BLOCK_MASK) << VSC73XX_CMD_BLOCK_SHIFT; + ret |= (mode & 1) << VSC73XX_CMD_MODE_SHIFT; + ret |= subblock & VSC73XX_CMD_SUBBLOCK_MASK; + + return ret; +} + +static int vsc7385_read(struct vsc7385 *vsc, u8 block, u8 subblock, u8 reg, + u32 *value) +{ + u8 cmd[4]; + u8 buf[4]; + struct spi_transfer t[2]; + struct spi_message m; + int err; + + if (!vsc7385_is_addr_valid(block, subblock)) + return -EINVAL; + + spi_message_init(&m); + + memset(&t, 0, sizeof(t)); + + t[0].tx_buf = cmd; + t[0].len = sizeof(cmd); + spi_message_add_tail(&t[0], &m); + + t[1].rx_buf = buf; + t[1].len = sizeof(buf); + spi_message_add_tail(&t[1], &m); + + cmd[0] = vsc7385_make_addr(VSC73XX_CMD_MODE_READ, block, subblock); + cmd[1] = reg; + cmd[2] = 0; + cmd[3] = 0; + + mutex_lock(&vsc->lock); + err = spi_sync(vsc->spi, &m); + mutex_unlock(&vsc->lock); + + if (err) + return err; + + *value = (((u32) buf[0]) << 24) | (((u32) buf[1]) << 16) | + (((u32) buf[2]) << 8) | ((u32) buf[3]); + + return 0; +} + + +static int vsc7385_write(struct vsc7385 *vsc, u8 block, u8 subblock, u8 reg, + u32 value) +{ + u8 cmd[2]; + u8 buf[4]; + struct spi_transfer t[2]; + struct spi_message m; + int err; + + if (!vsc7385_is_addr_valid(block, subblock)) + return -EINVAL; + + spi_message_init(&m); + + memset(&t, 0, sizeof(t)); + + t[0].tx_buf = cmd; + t[0].len = sizeof(cmd); + spi_message_add_tail(&t[0], &m); + + t[1].tx_buf = buf; + t[1].len = sizeof(buf); + spi_message_add_tail(&t[1], &m); + + cmd[0] = vsc7385_make_addr(VSC73XX_CMD_MODE_WRITE, block, subblock); + cmd[1] = reg; + + buf[0] = (value >> 24) & 0xff; + buf[1] = (value >> 16) & 0xff; + buf[2] = (value >> 8) & 0xff; + buf[3] = value & 0xff; + + mutex_lock(&vsc->lock); + err = spi_sync(vsc->spi, &m); + mutex_unlock(&vsc->lock); + + return err; +} + +static inline int vsc7385_write_verify(struct vsc7385 *vsc, u8 block, + u8 subblock, u8 reg, u32 value, + u32 read_mask, u32 read_val) +{ + struct spi_device *spi = vsc->spi; + u32 t; + int err; + + err = vsc7385_write(vsc, block, subblock, reg, value); + if (err) + return err; + + err = vsc7385_read(vsc, block, subblock, reg, &t); + if (err) + return err; + + if ((t & read_mask) != read_val) { + dev_err(&spi->dev, "register write error\n"); + return -EIO; + } + + return 0; +} + +static inline int vsc7385_set_clock_delay(struct vsc7385 *vsc, u32 val) +{ + return vsc7385_write(vsc, VSC73XX_BLOCK_SYSTEM, 0, + VSC73XX_ICPU_CLOCK_DELAY, val); +} + +static inline int vsc7385_get_clock_delay(struct vsc7385 *vsc, u32 *val) +{ + return vsc7385_read(vsc, VSC73XX_BLOCK_SYSTEM, 0, + VSC73XX_ICPU_CLOCK_DELAY, val); +} + +static inline int vsc7385_icpu_stop(struct vsc7385 *vsc) +{ + return vsc7385_write(vsc, VSC73XX_BLOCK_SYSTEM, 0, VSC73XX_ICPU_CTRL, + VSC73XX_ICPU_CTRL_STOP); +} + +static inline int vsc7385_icpu_start(struct vsc7385 *vsc) +{ + return vsc7385_write(vsc, VSC73XX_BLOCK_SYSTEM, 0, VSC73XX_ICPU_CTRL, + VSC73XX_ICPU_CTRL_START); +} + +static inline int vsc7385_icpu_reset(struct vsc7385 *vsc) +{ + int rc; + + rc = vsc7385_write(vsc, VSC73XX_BLOCK_SYSTEM, 0, VSC73XX_ICPU_ADDR, + 0x0000); + if (rc) + dev_err(&vsc->spi->dev, + "could not reset microcode, err=%d\n", rc); + + return rc; +} + +static int vsc7385_upload_ucode(struct vsc7385 *vsc) +{ + struct spi_device *spi = vsc->spi; + const struct firmware *firmware; + char *ucode_name; + unsigned char *dp; + unsigned int curVal; + int i; + int diffs; + int rc; + + ucode_name = (vsc->pdata->ucode_name) ? vsc->pdata->ucode_name + : "vsc7385_ucode.bin"; + rc = request_firmware(&firmware, ucode_name, &spi->dev); + if (rc) { + dev_err(&spi->dev, "request_firmware failed, err=%d\n", + rc); + return rc; + } + + rc = vsc7385_icpu_stop(vsc); + if (rc) + goto out; + + rc = vsc7385_icpu_reset(vsc); + if (rc) + goto out; + + dev_info(&spi->dev, "uploading microcode...\n"); + + dp = (unsigned char *) firmware->data; + for (i = 0; i < firmware->size; i++) { + rc = vsc7385_write(vsc, VSC73XX_BLOCK_SYSTEM, 0, + VSC73XX_ICPU_SRAM, *dp++); + if (rc) { + dev_err(&spi->dev, "could not load microcode, err=%d\n", + rc); + goto out; + } + } + + rc = vsc7385_icpu_reset(vsc); + if (rc) + goto out; + + dev_info(&spi->dev, "verifying microcode...\n"); + + dp = (unsigned char *) firmware->data; + diffs = 0; + for (i = 0; i < firmware->size; i++) { + rc = vsc7385_read(vsc, VSC73XX_BLOCK_SYSTEM, 0, + VSC73XX_ICPU_SRAM, &curVal); + if (rc) { + dev_err(&spi->dev, "could not read microcode %d\n", + rc); + goto out; + } + + if (curVal > 0xff) { + dev_err(&spi->dev, "bad val read: %04x : %02x %02x\n", + i, *dp, curVal); + rc = -EIO; + goto out; + } + + if ((curVal & 0xff) != *dp) { + diffs++; + dev_err(&spi->dev, "verify error: %04x : %02x %02x\n", + i, *dp, curVal); + + if (diffs > 4) + break; + } + dp++; + } + + if (diffs) { + dev_err(&spi->dev, "microcode verification failed\n"); + rc = -EIO; + goto out; + } + + dev_info(&spi->dev, "microcode uploaded\n"); + + rc = vsc7385_icpu_start(vsc); + +out: + release_firmware(firmware); + return rc; +} + +static int vsc7385_setup(struct vsc7385 *vsc) +{ + struct vsc7385_platform_data *pdata = vsc->pdata; + u32 t; + int err; + + err = vsc7385_write_verify(vsc, VSC73XX_BLOCK_SYSTEM, 0, + VSC73XX_ICPU_CLOCK_DELAY, + VSC7385_CLOCK_DELAY, + VSC7385_CLOCK_DELAY_MASK, + VSC7385_CLOCK_DELAY); + if (err) + goto err; + + err = vsc7385_write_verify(vsc, VSC73XX_BLOCK_MAC, + VSC73XX_SUBBLOCK_PORT_MAC, VSC73XX_ADVPORTM, + VSC7385_ADVPORTM_INIT, + VSC7385_ADVPORTM_MASK, + VSC7385_ADVPORTM_INIT); + if (err) + goto err; + + err = vsc7385_write(vsc, VSC73XX_BLOCK_MAC, VSC73XX_SUBBLOCK_PORT_MAC, + VSC73XX_MAC_CFG, VSC7385_MAC_CFG_RESET); + if (err) + goto err; + + t = VSC73XX_MAC_CFG_INIT; + t |= VSC73XX_MAC_CFG_TX_IPG(pdata->mac_cfg.tx_ipg); + t |= VSC73XX_MAC_CFG_CLK_SEL(pdata->mac_cfg.clk_sel); + if (pdata->mac_cfg.bit2) + t |= VSC73XX_MAC_CFG_BIT2; + + err = vsc7385_write(vsc, VSC73XX_BLOCK_MAC, VSC73XX_SUBBLOCK_PORT_MAC, + VSC73XX_MAC_CFG, t); + if (err) + goto err; + + return 0; + +err: + return err; +} + +static int vsc7385_detect(struct vsc7385 *vsc) +{ + struct spi_device *spi = vsc->spi; + u32 t; + u32 id; + u32 rev; + int err; + + err = vsc7385_read(vsc, VSC73XX_BLOCK_SYSTEM, 0, + VSC73XX_ICPU_MBOX_VAL, &t); + if (err) { + dev_err(&spi->dev, "unable to read mailbox, err=%d\n", err); + return err; + } + + if (t == 0xffffffff) { + dev_dbg(&spi->dev, "assert chip reset\n"); + if (vsc->pdata->reset) + vsc->pdata->reset(); + + } + + err = vsc7385_read(vsc, VSC73XX_BLOCK_SYSTEM, 0, + VSC73XX_ICPU_CHIPID, &t); + if (err) { + dev_err(&spi->dev, "unable to read chip id, err=%d\n", err); + return err; + } + + id = (t >> VSC73XX_ICPU_CHIPID_ID_SHIFT) & VSC73XX_ICPU_CHIPID_ID_MASK; + switch (id) { + case VSC73XX_ICPU_CHIPID_ID_7385: + case VSC73XX_ICPU_CHIPID_ID_7395: + break; + default: + dev_err(&spi->dev, "unsupported chip, id=%04x\n", id); + return -ENODEV; + } + + rev = (t >> VSC73XX_ICPU_CHIPID_REV_SHIFT) & + VSC73XX_ICPU_CHIPID_REV_MASK; + dev_info(&spi->dev, "VSC%04X (rev. %d) switch found\n", id, rev); + + return 0; +} + +static int __devinit vsc7385_probe(struct spi_device *spi) +{ + struct vsc7385 *vsc; + struct vsc7385_platform_data *pdata; + int err; + + printk(KERN_INFO DRV_DESC " version " DRV_VERSION"\n"); + + pdata = spi->dev.platform_data; + if (!pdata) { + dev_err(&spi->dev, "no platform data specified\n"); + return -ENODEV; + } + + vsc = kzalloc(sizeof(*vsc), GFP_KERNEL); + if (!vsc) { + dev_err(&spi->dev, "no memory for private data\n"); + return -ENOMEM; + } + + mutex_init(&vsc->lock); + vsc->pdata = pdata; + vsc->spi = spi_dev_get(spi); + dev_set_drvdata(&spi->dev, vsc); + + spi->mode = SPI_MODE_0; + spi->bits_per_word = 8; + err = spi_setup(spi); + if (err) { + dev_err(&spi->dev, "spi_setup failed, err=%d\n", err); + goto err_drvdata; + } + + err = vsc7385_detect(vsc); + if (err) { + dev_err(&spi->dev, "no chip found, err=%d\n", err); + goto err_drvdata; + } + + err = vsc7385_upload_ucode(vsc); + if (err) + goto err_drvdata; + + err = vsc7385_setup(vsc); + if (err) + goto err_drvdata; + + return 0; + +err_drvdata: + dev_set_drvdata(&spi->dev, NULL); + kfree(vsc); + return err; +} + +static int __devexit vsc7385_remove(struct spi_device *spi) +{ + struct vsc7385_data *vsc; + + vsc = dev_get_drvdata(&spi->dev); + dev_set_drvdata(&spi->dev, NULL); + kfree(vsc); + + return 0; +} + +static struct spi_driver vsc7385_driver = { + .driver = { + .name = DRV_NAME, + .bus = &spi_bus_type, + .owner = THIS_MODULE, + }, + .probe = vsc7385_probe, + .remove = __devexit_p(vsc7385_remove), +}; + +static int __init vsc7385_init(void) +{ + return spi_register_driver(&vsc7385_driver); +} +module_init(vsc7385_init); + +static void __exit vsc7385_exit(void) +{ + spi_unregister_driver(&vsc7385_driver); +} +module_exit(vsc7385_exit); + +MODULE_DESCRIPTION(DRV_DESC); +MODULE_VERSION(DRV_VERSION); +MODULE_AUTHOR("Gabor Juhos <juhosg@openwrt.org>"); +MODULE_LICENSE("GPL v2"); + |