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 <bhutchings@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/drivers/net/sfc/tenxpress.c b/drivers/net/sfc/tenxpress.c
index 23583ba..e61dc4d 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 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 @@
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 @@
PMA_PMD_LED_OVERR_REG, PMA_PMD_LED_DEFAULT);
}
- return rc;
+ return 0;
}
static int tenxpress_phy_init(struct efx_nic *efx)