From: Ben Hutchings Date: Fri, 27 Feb 2009 13:06:45 +0000 (+0000) Subject: sfc: SFT9001/SFN4111T: Check PHY boot status during board initialisation X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=190dbcfd6806c7c88fc028acda95731ffd43979d;p=GitHub%2Fexynos8895%2Fandroid_kernel_samsung_universal8895.git sfc: SFT9001/SFN4111T: Check PHY boot status during board initialisation During SFN4111T initialisation, check whether the PHY boot status indicates a bad firmware checksum. If so, prepare to reflash rather than continuing with normal initialisation. Remove redundant PHY boot status check from tenxpress_phy_init(). Signed-off-by: Ben Hutchings Signed-off-by: David S. Miller --- diff --git a/drivers/net/sfc/phy.h b/drivers/net/sfc/phy.h index 07e855c148bc..f6e47227d245 100644 --- a/drivers/net/sfc/phy.h +++ b/drivers/net/sfc/phy.h @@ -18,6 +18,10 @@ extern struct efx_phy_operations falcon_sft9001_phy_ops; extern void tenxpress_phy_blink(struct efx_nic *efx, bool blink); +/* Wait for the PHY to boot. Return 0 on success, -EINVAL if the PHY failed + * to boot due to corrupt flash, or some other negative error code. */ +extern int sft9001_wait_boot(struct efx_nic *efx); + /**************************************************************************** * Exported functions from the driver for XFP optical PHYs */ diff --git a/drivers/net/sfc/sfe4001.c b/drivers/net/sfc/sfe4001.c index c0e906831623..4eac5da81e5a 100644 --- a/drivers/net/sfc/sfe4001.c +++ b/drivers/net/sfc/sfe4001.c @@ -399,6 +399,7 @@ static struct i2c_board_info sfn4111t_r5_hwmon_info = { int sfn4111t_init(struct efx_nic *efx) { + int i = 0; int rc; efx->board_info.hwmon_client = @@ -417,13 +418,20 @@ int sfn4111t_init(struct efx_nic *efx) if (rc) goto fail_hwmon; - if (efx->phy_mode & PHY_MODE_SPECIAL) { - efx_stats_disable(efx); - sfn4111t_reset(efx); - } - - return 0; + do { + if (efx->phy_mode & PHY_MODE_SPECIAL) { + /* PHY may not generate a 156.25 MHz clock and MAC + * stats fetch will fail. */ + efx_stats_disable(efx); + sfn4111t_reset(efx); + } + rc = sft9001_wait_boot(efx); + if (rc == 0) + return 0; + efx->phy_mode = PHY_MODE_SPECIAL; + } while (rc == -EINVAL && ++i < 2); + device_remove_file(&efx->pci_dev->dev, &dev_attr_phy_flash_cfg); fail_hwmon: i2c_unregister_device(efx->board_info.hwmon_client); return rc; diff --git a/drivers/net/sfc/tenxpress.c b/drivers/net/sfc/tenxpress.c index 23583ba2e7eb..e61dc4d4741c 100644 --- a/drivers/net/sfc/tenxpress.c +++ b/drivers/net/sfc/tenxpress.c @@ -158,14 +158,16 @@ #define PCS_10GBASET_BLKLK_WIDTH 1 /* Boot status register */ -#define PCS_BOOT_STATUS_REG 53248 -#define PCS_BOOT_FATAL_ERR_LBN (0) -#define PCS_BOOT_PROGRESS_LBN (1) -#define PCS_BOOT_PROGRESS_WIDTH (2) -#define PCS_BOOT_COMPLETE_LBN (3) - -#define PCS_BOOT_MAX_DELAY (100) -#define PCS_BOOT_POLL_DELAY (10) +#define PCS_BOOT_STATUS_REG 53248 +#define PCS_BOOT_FATAL_ERROR_LBN 0 +#define PCS_BOOT_PROGRESS_LBN 1 +#define PCS_BOOT_PROGRESS_WIDTH 2 +#define PCS_BOOT_PROGRESS_INIT 0 +#define PCS_BOOT_PROGRESS_WAIT_MDIO 1 +#define PCS_BOOT_PROGRESS_CHECKSUM 2 +#define PCS_BOOT_PROGRESS_JUMP 3 +#define PCS_BOOT_DOWNLOAD_WAIT_LBN 3 +#define PCS_BOOT_CODE_STARTED_LBN 4 /* 100M/1G PHY registers */ #define GPHY_XCONTROL_REG 49152 @@ -230,40 +232,62 @@ static ssize_t set_phy_short_reach(struct device *dev, static DEVICE_ATTR(phy_short_reach, 0644, show_phy_short_reach, set_phy_short_reach); -/* Check that the C166 has booted successfully */ -static int tenxpress_phy_check(struct efx_nic *efx) +int sft9001_wait_boot(struct efx_nic *efx) { - int phy_id = efx->mii.phy_id; - int count = PCS_BOOT_MAX_DELAY / PCS_BOOT_POLL_DELAY; + unsigned long timeout = jiffies + HZ + 1; int boot_stat; - /* Wait for the boot to complete (or not) */ - while (count) { - boot_stat = mdio_clause45_read(efx, phy_id, + for (;;) { + boot_stat = mdio_clause45_read(efx, efx->mii.phy_id, MDIO_MMD_PCS, PCS_BOOT_STATUS_REG); - if (boot_stat & (1 << PCS_BOOT_COMPLETE_LBN)) - break; - count--; - udelay(PCS_BOOT_POLL_DELAY); - } + if (boot_stat >= 0) { + EFX_LOG(efx, "PHY boot status = %#x\n", boot_stat); + switch (boot_stat & + ((1 << PCS_BOOT_FATAL_ERROR_LBN) | + (3 << PCS_BOOT_PROGRESS_LBN) | + (1 << PCS_BOOT_DOWNLOAD_WAIT_LBN) | + (1 << PCS_BOOT_CODE_STARTED_LBN))) { + case ((1 << PCS_BOOT_FATAL_ERROR_LBN) | + (PCS_BOOT_PROGRESS_CHECKSUM << + PCS_BOOT_PROGRESS_LBN)): + case ((1 << PCS_BOOT_FATAL_ERROR_LBN) | + (PCS_BOOT_PROGRESS_INIT << + PCS_BOOT_PROGRESS_LBN) | + (1 << PCS_BOOT_DOWNLOAD_WAIT_LBN)): + return -EINVAL; + case ((PCS_BOOT_PROGRESS_WAIT_MDIO << + PCS_BOOT_PROGRESS_LBN) | + (1 << PCS_BOOT_DOWNLOAD_WAIT_LBN)): + return (efx->phy_mode & PHY_MODE_SPECIAL) ? + 0 : -EIO; + case ((PCS_BOOT_PROGRESS_JUMP << + PCS_BOOT_PROGRESS_LBN) | + (1 << PCS_BOOT_CODE_STARTED_LBN)): + case ((PCS_BOOT_PROGRESS_JUMP << + PCS_BOOT_PROGRESS_LBN) | + (1 << PCS_BOOT_DOWNLOAD_WAIT_LBN) | + (1 << PCS_BOOT_CODE_STARTED_LBN)): + return (efx->phy_mode & PHY_MODE_SPECIAL) ? + -EIO : 0; + default: + if (boot_stat & (1 << PCS_BOOT_FATAL_ERROR_LBN)) + return -EIO; + break; + } + } - if (!count) { - EFX_ERR(efx, "%s: PHY boot timed out. Last status " - "%x\n", __func__, - (boot_stat >> PCS_BOOT_PROGRESS_LBN) & - ((1 << PCS_BOOT_PROGRESS_WIDTH) - 1)); - return -ETIMEDOUT; - } + if (time_after_eq(jiffies, timeout)) + return -ETIMEDOUT; - return 0; + msleep(50); + } } static int tenxpress_init(struct efx_nic *efx) { int phy_id = efx->mii.phy_id; int reg; - int rc; if (efx->phy_type == PHY_TYPE_SFX7101) { /* Enable 312.5 MHz clock */ @@ -286,10 +310,6 @@ static int tenxpress_init(struct efx_nic *efx) false); } - rc = tenxpress_phy_check(efx); - if (rc < 0) - return rc; - /* Set the LEDs up as: Green = Link, Amber = Link/Act, Red = Off */ if (efx->phy_type == PHY_TYPE_SFX7101) { mdio_clause45_set_flag(efx, phy_id, MDIO_MMD_PMAPMD, @@ -300,7 +320,7 @@ static int tenxpress_init(struct efx_nic *efx) PMA_PMD_LED_OVERR_REG, PMA_PMD_LED_DEFAULT); } - return rc; + return 0; } static int tenxpress_phy_init(struct efx_nic *efx)