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Date: Sun, 18 Apr 2010 17:47:56 +0300
From: "Vladislav Zolotarov" <vladz@...adcom.com>
To: davem@...emloft.net
cc: netdev@...r.kernel.org, eilong@...adcom.com
Subject: [PATCH 1/13] bnx2x: Parity error handling for 57710 and 57711
Handle parity errors on 57710 and 57711 chips.
Signed-off-by: Vladislav Zolotarov <vladz@...adcom.com>
Signed-off-by: Eilon Greenstein <eilong@...adcom.com>
---
drivers/net/bnx2x.h | 23 +-
drivers/net/bnx2x_main.c | 1045 +++++++++++++++++++++++++++++++++++++++++++---
drivers/net/bnx2x_reg.h | 27 ++-
3 files changed, 1039 insertions(+), 56 deletions(-)
diff --git a/drivers/net/bnx2x.h b/drivers/net/bnx2x.h
index ae9c89e..37e9b16 100644
--- a/drivers/net/bnx2x.h
+++ b/drivers/net/bnx2x.h
@@ -155,9 +155,15 @@ do { \
#define SHMEM2_RD(bp, field) REG_RD(bp, SHMEM2_ADDR(bp, field))
#define SHMEM2_WR(bp, field, val) REG_WR(bp, SHMEM2_ADDR(bp, field), val)
+#define MF_CFG_RD(bp, field) SHMEM_RD(bp, mf_cfg.field)
+#define MF_CFG_WR(bp, field, val) SHMEM_WR(bp, mf_cfg.field, val)
+
#define EMAC_RD(bp, reg) REG_RD(bp, emac_base + reg)
#define EMAC_WR(bp, reg, val) REG_WR(bp, emac_base + reg, val)
+#define AEU_IN_ATTN_BITS_PXPPCICLOCKCLIENT_PARITY_ERROR \
+ AEU_INPUTS_ATTN_BITS_PXPPCICLOCKCLIENT_PARITY_ERROR
+
/* fast path */
@@ -818,6 +824,12 @@ struct attn_route {
u32 sig[4];
};
+typedef enum {
+ BNX2X_RECOVERY_DONE,
+ BNX2X_RECOVERY_INIT,
+ BNX2X_RECOVERY_WAIT,
+} bnx2x_recovery_state_t;
+
struct bnx2x {
/* Fields used in the tx and intr/napi performance paths
* are grouped together in the beginning of the structure
@@ -835,6 +847,9 @@ struct bnx2x {
struct pci_dev *pdev;
atomic_t intr_sem;
+
+ bnx2x_recovery_state_t recovery_state;
+ int is_leader;
#ifdef BCM_CNIC
struct msix_entry msix_table[MAX_CONTEXT+2];
#else
@@ -924,8 +939,7 @@ struct bnx2x {
int mrrs;
struct delayed_work sp_task;
- struct work_struct reset_task;
-
+ struct delayed_work reset_task;
struct timer_list timer;
int current_interval;
@@ -1125,6 +1139,7 @@ static inline u32 reg_poll(struct bnx2x *bp, u32 reg, u32 expected, int ms,
#define LOAD_DIAG 2
#define UNLOAD_NORMAL 0
#define UNLOAD_CLOSE 1
+#define UNLOAD_RECOVERY 2
/* DMAE command defines */
@@ -1294,6 +1309,10 @@ static inline u32 reg_poll(struct bnx2x *bp, u32 reg, u32 expected, int ms,
AEU_INPUTS_ATTN_BITS_IGU_PARITY_ERROR | \
AEU_INPUTS_ATTN_BITS_MISC_PARITY_ERROR)
+#define HW_PRTY_ASSERT_SET_3 (AEU_INPUTS_ATTN_BITS_MCP_LATCHED_ROM_PARITY | \
+ AEU_INPUTS_ATTN_BITS_MCP_LATCHED_UMP_RX_PARITY | \
+ AEU_INPUTS_ATTN_BITS_MCP_LATCHED_UMP_TX_PARITY | \
+ AEU_INPUTS_ATTN_BITS_MCP_LATCHED_SCPAD_PARITY)
#define MULTI_FLAGS(bp) \
(TSTORM_ETH_FUNCTION_COMMON_CONFIG_RSS_IPV4_CAPABILITY | \
diff --git a/drivers/net/bnx2x_main.c b/drivers/net/bnx2x_main.c
index 63a17d6..bbaf4ac 100644
--- a/drivers/net/bnx2x_main.c
+++ b/drivers/net/bnx2x_main.c
@@ -764,6 +764,40 @@ static void bnx2x_int_disable_sync(struct bnx2x *bp, int disable_hw)
* General service functions
*/
+/* Return true if succeeded to acquire the lock */
+static bool bnx2x_trylock_hw_lock(struct bnx2x *bp, u32 resource)
+{
+ u32 lock_status;
+ u32 resource_bit = (1 << resource);
+ int func = BP_FUNC(bp);
+ u32 hw_lock_control_reg;
+
+ DP(NETIF_MSG_HW, "Trying to take a lock on resource %d\n", resource);
+
+ /* Validating that the resource is within range */
+ if (resource > HW_LOCK_MAX_RESOURCE_VALUE) {
+ DP(NETIF_MSG_HW,
+ "resource(0x%x) > HW_LOCK_MAX_RESOURCE_VALUE(0x%x)\n",
+ resource, HW_LOCK_MAX_RESOURCE_VALUE);
+ return -EINVAL;
+ }
+
+ if (func <= 5)
+ hw_lock_control_reg = (MISC_REG_DRIVER_CONTROL_1 + func*8);
+ else
+ hw_lock_control_reg =
+ (MISC_REG_DRIVER_CONTROL_7 + (func - 6)*8);
+
+ /* Try to acquire the lock */
+ REG_WR(bp, hw_lock_control_reg + 4, resource_bit);
+ lock_status = REG_RD(bp, hw_lock_control_reg);
+ if (lock_status & resource_bit)
+ return true;
+
+ DP(NETIF_MSG_HW, "Failed to get a lock on resource %d\n", resource);
+ return false;
+}
+
static inline void bnx2x_ack_sb(struct bnx2x *bp, u8 sb_id,
u8 storm, u16 index, u8 op, u8 update)
{
@@ -1901,6 +1935,8 @@ static int bnx2x_release_hw_lock(struct bnx2x *bp, u32 resource)
int func = BP_FUNC(bp);
u32 hw_lock_control_reg;
+ DP(NETIF_MSG_HW, "Releasing a lock on resource %d\n", resource);
+
/* Validating that the resource is within range */
if (resource > HW_LOCK_MAX_RESOURCE_VALUE) {
DP(NETIF_MSG_HW,
@@ -2741,12 +2777,11 @@ static int bnx2x_sp_post(struct bnx2x *bp, int command, int cid,
/* acquire split MCP access lock register */
static int bnx2x_acquire_alr(struct bnx2x *bp)
{
- u32 i, j, val;
+ u32 j, val;
int rc = 0;
might_sleep();
- i = 100;
- for (j = 0; j < i*10; j++) {
+ for (j = 0; j < 1000; j++) {
val = (1UL << 31);
REG_WR(bp, GRCBASE_MCP + 0x9c, val);
val = REG_RD(bp, GRCBASE_MCP + 0x9c);
@@ -2766,9 +2801,7 @@ static int bnx2x_acquire_alr(struct bnx2x *bp)
/* release split MCP access lock register */
static void bnx2x_release_alr(struct bnx2x *bp)
{
- u32 val = 0;
-
- REG_WR(bp, GRCBASE_MCP + 0x9c, val);
+ REG_WR(bp, GRCBASE_MCP + 0x9c, 0);
}
static inline u16 bnx2x_update_dsb_idx(struct bnx2x *bp)
@@ -2824,7 +2857,7 @@ static void bnx2x_attn_int_asserted(struct bnx2x *bp, u32 asserted)
DP(NETIF_MSG_HW, "aeu_mask %x newly asserted %x\n",
aeu_mask, asserted);
- aeu_mask &= ~(asserted & 0xff);
+ aeu_mask &= ~(asserted & 0x3ff);
DP(NETIF_MSG_HW, "new mask %x\n", aeu_mask);
REG_WR(bp, aeu_addr, aeu_mask);
@@ -3105,10 +3138,311 @@ static inline void bnx2x_attn_int_deasserted3(struct bnx2x *bp, u32 attn)
}
}
-static void bnx2x_attn_int_deasserted(struct bnx2x *bp, u32 deasserted)
+static int bnx2x_nic_unload(struct bnx2x *bp, int unload_mode);
+static int bnx2x_nic_load(struct bnx2x *bp, int load_mode);
+
+
+#define BNX2X_MISC_GEN_REG MISC_REG_GENERIC_POR_1
+#define LOAD_COUNTER_BITS 16 /* Number of bits for load counter */
+#define LOAD_COUNTER_MASK (((u32)0x1 << LOAD_COUNTER_BITS) - 1)
+#define RESET_DONE_FLAG_MASK (~LOAD_COUNTER_MASK)
+#define RESET_DONE_FLAG_SHIFT LOAD_COUNTER_BITS
+#define CHIP_PARITY_SUPPORTED(bp) (CHIP_IS_E1(bp) || CHIP_IS_E1H(bp))
+/*
+ * should be run under rtnl lock
+ */
+static inline void bnx2x_set_reset_done(struct bnx2x *bp)
+{
+ u32 val = REG_RD(bp, BNX2X_MISC_GEN_REG);
+ val &= ~(1 << RESET_DONE_FLAG_SHIFT);
+ REG_WR(bp, BNX2X_MISC_GEN_REG, val);
+ barrier();
+ mmiowb();
+}
+
+/*
+ * should be run under rtnl lock
+ */
+static inline void bnx2x_set_reset_in_progress(struct bnx2x *bp)
+{
+ u32 val = REG_RD(bp, BNX2X_MISC_GEN_REG);
+ val |= (1 << 16);
+ REG_WR(bp, BNX2X_MISC_GEN_REG, val);
+ barrier();
+ mmiowb();
+}
+
+/*
+ * should be run under rtnl lock
+ */
+static inline bool bnx2x_reset_is_done(struct bnx2x *bp)
+{
+ u32 val = REG_RD(bp, BNX2X_MISC_GEN_REG);
+ DP(NETIF_MSG_HW, "GEN_REG_VAL=0x%08x\n", val);
+ return (val & RESET_DONE_FLAG_MASK) ? false : true;
+}
+
+/*
+ * should be run under rtnl lock
+ */
+static inline void bnx2x_inc_load_cnt(struct bnx2x *bp)
+{
+ u32 val1, val = REG_RD(bp, BNX2X_MISC_GEN_REG);
+
+ DP(NETIF_MSG_HW, "Old GEN_REG_VAL=0x%08x\n", val);
+
+ val1 = ((val & LOAD_COUNTER_MASK) + 1) & LOAD_COUNTER_MASK;
+ REG_WR(bp, BNX2X_MISC_GEN_REG, (val & RESET_DONE_FLAG_MASK) | val1);
+ barrier();
+ mmiowb();
+}
+
+/*
+ * should be run under rtnl lock
+ */
+static inline u32 bnx2x_dec_load_cnt(struct bnx2x *bp)
+{
+ u32 val1, val = REG_RD(bp, BNX2X_MISC_GEN_REG);
+
+ DP(NETIF_MSG_HW, "Old GEN_REG_VAL=0x%08x\n", val);
+
+ val1 = ((val & LOAD_COUNTER_MASK) - 1) & LOAD_COUNTER_MASK;
+ REG_WR(bp, BNX2X_MISC_GEN_REG, (val & RESET_DONE_FLAG_MASK) | val1);
+ barrier();
+ mmiowb();
+
+ return val1;
+}
+
+/*
+ * should be run under rtnl lock
+ */
+static inline u32 bnx2x_get_load_cnt(struct bnx2x *bp)
+{
+ return REG_RD(bp, BNX2X_MISC_GEN_REG) & LOAD_COUNTER_MASK;
+}
+
+static inline void bnx2x_clear_load_cnt(struct bnx2x *bp)
+{
+ u32 val = REG_RD(bp, BNX2X_MISC_GEN_REG);
+ REG_WR(bp, BNX2X_MISC_GEN_REG, val & (~LOAD_COUNTER_MASK));
+}
+
+static inline void _print_next_block(int idx, const char *blk)
+{
+ if (idx)
+ pr_cont(", ");
+ pr_cont("%s", blk);
+}
+
+static inline int bnx2x_print_blocks_with_parity0(u32 sig, int par_num)
+{
+ int i = 0;
+ u32 cur_bit = 0;
+ for (i = 0; sig; i++) {
+ cur_bit = ((u32)0x1 << i);
+ if (sig & cur_bit) {
+ switch (cur_bit) {
+ case AEU_INPUTS_ATTN_BITS_BRB_PARITY_ERROR:
+ _print_next_block(par_num++, "BRB");
+ break;
+ case AEU_INPUTS_ATTN_BITS_PARSER_PARITY_ERROR:
+ _print_next_block(par_num++, "PARSER");
+ break;
+ case AEU_INPUTS_ATTN_BITS_TSDM_PARITY_ERROR:
+ _print_next_block(par_num++, "TSDM");
+ break;
+ case AEU_INPUTS_ATTN_BITS_SEARCHER_PARITY_ERROR:
+ _print_next_block(par_num++, "SEARCHER");
+ break;
+ case AEU_INPUTS_ATTN_BITS_TSEMI_PARITY_ERROR:
+ _print_next_block(par_num++, "TSEMI");
+ break;
+ }
+
+ /* Clear the bit */
+ sig &= ~cur_bit;
+ }
+ }
+
+ return par_num;
+}
+
+static inline int bnx2x_print_blocks_with_parity1(u32 sig, int par_num)
+{
+ int i = 0;
+ u32 cur_bit = 0;
+ for (i = 0; sig; i++) {
+ cur_bit = ((u32)0x1 << i);
+ if (sig & cur_bit) {
+ switch (cur_bit) {
+ case AEU_INPUTS_ATTN_BITS_PBCLIENT_PARITY_ERROR:
+ _print_next_block(par_num++, "PBCLIENT");
+ break;
+ case AEU_INPUTS_ATTN_BITS_QM_PARITY_ERROR:
+ _print_next_block(par_num++, "QM");
+ break;
+ case AEU_INPUTS_ATTN_BITS_XSDM_PARITY_ERROR:
+ _print_next_block(par_num++, "XSDM");
+ break;
+ case AEU_INPUTS_ATTN_BITS_XSEMI_PARITY_ERROR:
+ _print_next_block(par_num++, "XSEMI");
+ break;
+ case AEU_INPUTS_ATTN_BITS_DOORBELLQ_PARITY_ERROR:
+ _print_next_block(par_num++, "DOORBELLQ");
+ break;
+ case AEU_INPUTS_ATTN_BITS_VAUX_PCI_CORE_PARITY_ERROR:
+ _print_next_block(par_num++, "VAUX PCI CORE");
+ break;
+ case AEU_INPUTS_ATTN_BITS_DEBUG_PARITY_ERROR:
+ _print_next_block(par_num++, "DEBUG");
+ break;
+ case AEU_INPUTS_ATTN_BITS_USDM_PARITY_ERROR:
+ _print_next_block(par_num++, "USDM");
+ break;
+ case AEU_INPUTS_ATTN_BITS_USEMI_PARITY_ERROR:
+ _print_next_block(par_num++, "USEMI");
+ break;
+ case AEU_INPUTS_ATTN_BITS_UPB_PARITY_ERROR:
+ _print_next_block(par_num++, "UPB");
+ break;
+ case AEU_INPUTS_ATTN_BITS_CSDM_PARITY_ERROR:
+ _print_next_block(par_num++, "CSDM");
+ break;
+ }
+
+ /* Clear the bit */
+ sig &= ~cur_bit;
+ }
+ }
+
+ return par_num;
+}
+
+static inline int bnx2x_print_blocks_with_parity2(u32 sig, int par_num)
+{
+ int i = 0;
+ u32 cur_bit = 0;
+ for (i = 0; sig; i++) {
+ cur_bit = ((u32)0x1 << i);
+ if (sig & cur_bit) {
+ switch (cur_bit) {
+ case AEU_INPUTS_ATTN_BITS_CSEMI_PARITY_ERROR:
+ _print_next_block(par_num++, "CSEMI");
+ break;
+ case AEU_INPUTS_ATTN_BITS_PXP_PARITY_ERROR:
+ _print_next_block(par_num++, "PXP");
+ break;
+ case AEU_IN_ATTN_BITS_PXPPCICLOCKCLIENT_PARITY_ERROR:
+ _print_next_block(par_num++,
+ "PXPPCICLOCKCLIENT");
+ break;
+ case AEU_INPUTS_ATTN_BITS_CFC_PARITY_ERROR:
+ _print_next_block(par_num++, "CFC");
+ break;
+ case AEU_INPUTS_ATTN_BITS_CDU_PARITY_ERROR:
+ _print_next_block(par_num++, "CDU");
+ break;
+ case AEU_INPUTS_ATTN_BITS_IGU_PARITY_ERROR:
+ _print_next_block(par_num++, "IGU");
+ break;
+ case AEU_INPUTS_ATTN_BITS_MISC_PARITY_ERROR:
+ _print_next_block(par_num++, "MISC");
+ break;
+ }
+
+ /* Clear the bit */
+ sig &= ~cur_bit;
+ }
+ }
+
+ return par_num;
+}
+
+static inline int bnx2x_print_blocks_with_parity3(u32 sig, int par_num)
+{
+ int i = 0;
+ u32 cur_bit = 0;
+ for (i = 0; sig; i++) {
+ cur_bit = ((u32)0x1 << i);
+ if (sig & cur_bit) {
+ switch (cur_bit) {
+ case AEU_INPUTS_ATTN_BITS_MCP_LATCHED_ROM_PARITY:
+ _print_next_block(par_num++, "MCP ROM");
+ break;
+ case AEU_INPUTS_ATTN_BITS_MCP_LATCHED_UMP_RX_PARITY:
+ _print_next_block(par_num++, "MCP UMP RX");
+ break;
+ case AEU_INPUTS_ATTN_BITS_MCP_LATCHED_UMP_TX_PARITY:
+ _print_next_block(par_num++, "MCP UMP TX");
+ break;
+ case AEU_INPUTS_ATTN_BITS_MCP_LATCHED_SCPAD_PARITY:
+ _print_next_block(par_num++, "MCP SCPAD");
+ break;
+ }
+
+ /* Clear the bit */
+ sig &= ~cur_bit;
+ }
+ }
+
+ return par_num;
+}
+
+static inline bool bnx2x_parity_attn(struct bnx2x *bp, u32 sig0, u32 sig1,
+ u32 sig2, u32 sig3)
+{
+ if ((sig0 & HW_PRTY_ASSERT_SET_0) || (sig1 & HW_PRTY_ASSERT_SET_1) ||
+ (sig2 & HW_PRTY_ASSERT_SET_2) || (sig3 & HW_PRTY_ASSERT_SET_3)) {
+ int par_num = 0;
+ DP(NETIF_MSG_HW, "Was parity error: HW block parity attention: "
+ "[0]:0x%08x [1]:0x%08x "
+ "[2]:0x%08x [3]:0x%08x\n",
+ sig0 & HW_PRTY_ASSERT_SET_0,
+ sig1 & HW_PRTY_ASSERT_SET_1,
+ sig2 & HW_PRTY_ASSERT_SET_2,
+ sig3 & HW_PRTY_ASSERT_SET_3);
+ printk(KERN_ERR"%s: Parity errors detected in blocks: ",
+ bp->dev->name);
+ par_num = bnx2x_print_blocks_with_parity0(
+ sig0 & HW_PRTY_ASSERT_SET_0, par_num);
+ par_num = bnx2x_print_blocks_with_parity1(
+ sig1 & HW_PRTY_ASSERT_SET_1, par_num);
+ par_num = bnx2x_print_blocks_with_parity2(
+ sig2 & HW_PRTY_ASSERT_SET_2, par_num);
+ par_num = bnx2x_print_blocks_with_parity3(
+ sig3 & HW_PRTY_ASSERT_SET_3, par_num);
+ printk("\n");
+ return true;
+ } else
+ return false;
+}
+
+static bool bnx2x_chk_parity_attn(struct bnx2x *bp)
{
struct attn_route attn;
- struct attn_route group_mask;
+ int port = BP_PORT(bp);
+
+ attn.sig[0] = REG_RD(bp,
+ MISC_REG_AEU_AFTER_INVERT_1_FUNC_0 +
+ port*4);
+ attn.sig[1] = REG_RD(bp,
+ MISC_REG_AEU_AFTER_INVERT_2_FUNC_0 +
+ port*4);
+ attn.sig[2] = REG_RD(bp,
+ MISC_REG_AEU_AFTER_INVERT_3_FUNC_0 +
+ port*4);
+ attn.sig[3] = REG_RD(bp,
+ MISC_REG_AEU_AFTER_INVERT_4_FUNC_0 +
+ port*4);
+
+ return bnx2x_parity_attn(bp, attn.sig[0], attn.sig[1], attn.sig[2],
+ attn.sig[3]);
+}
+
+static void bnx2x_attn_int_deasserted(struct bnx2x *bp, u32 deasserted)
+{
+ struct attn_route attn, *group_mask;
int port = BP_PORT(bp);
int index;
u32 reg_addr;
@@ -3119,6 +3453,19 @@ static void bnx2x_attn_int_deasserted(struct bnx2x *bp, u32 deasserted)
try to handle this event */
bnx2x_acquire_alr(bp);
+ if (bnx2x_chk_parity_attn(bp)) {
+ bp->recovery_state = BNX2X_RECOVERY_INIT;
+ bnx2x_set_reset_in_progress(bp);
+ schedule_delayed_work(&bp->reset_task, 0);
+ /* Disable HW interrupts */
+ bnx2x_int_disable(bp);
+ bnx2x_release_alr(bp);
+ /* In case of parity errors don't handle attentions so that
+ * other function would "see" parity errors.
+ */
+ return;
+ }
+
attn.sig[0] = REG_RD(bp, MISC_REG_AEU_AFTER_INVERT_1_FUNC_0 + port*4);
attn.sig[1] = REG_RD(bp, MISC_REG_AEU_AFTER_INVERT_2_FUNC_0 + port*4);
attn.sig[2] = REG_RD(bp, MISC_REG_AEU_AFTER_INVERT_3_FUNC_0 + port*4);
@@ -3128,28 +3475,20 @@ static void bnx2x_attn_int_deasserted(struct bnx2x *bp, u32 deasserted)
for (index = 0; index < MAX_DYNAMIC_ATTN_GRPS; index++) {
if (deasserted & (1 << index)) {
- group_mask = bp->attn_group[index];
+ group_mask = &bp->attn_group[index];
DP(NETIF_MSG_HW, "group[%d]: %08x %08x %08x %08x\n",
- index, group_mask.sig[0], group_mask.sig[1],
- group_mask.sig[2], group_mask.sig[3]);
+ index, group_mask->sig[0], group_mask->sig[1],
+ group_mask->sig[2], group_mask->sig[3]);
bnx2x_attn_int_deasserted3(bp,
- attn.sig[3] & group_mask.sig[3]);
+ attn.sig[3] & group_mask->sig[3]);
bnx2x_attn_int_deasserted1(bp,
- attn.sig[1] & group_mask.sig[1]);
+ attn.sig[1] & group_mask->sig[1]);
bnx2x_attn_int_deasserted2(bp,
- attn.sig[2] & group_mask.sig[2]);
+ attn.sig[2] & group_mask->sig[2]);
bnx2x_attn_int_deasserted0(bp,
- attn.sig[0] & group_mask.sig[0]);
-
- if ((attn.sig[0] & group_mask.sig[0] &
- HW_PRTY_ASSERT_SET_0) ||
- (attn.sig[1] & group_mask.sig[1] &
- HW_PRTY_ASSERT_SET_1) ||
- (attn.sig[2] & group_mask.sig[2] &
- HW_PRTY_ASSERT_SET_2))
- BNX2X_ERR("FATAL HW block parity attention\n");
+ attn.sig[0] & group_mask->sig[0]);
}
}
@@ -3173,7 +3512,7 @@ static void bnx2x_attn_int_deasserted(struct bnx2x *bp, u32 deasserted)
DP(NETIF_MSG_HW, "aeu_mask %x newly deasserted %x\n",
aeu_mask, deasserted);
- aeu_mask |= (deasserted & 0xff);
+ aeu_mask |= (deasserted & 0x3ff);
DP(NETIF_MSG_HW, "new mask %x\n", aeu_mask);
REG_WR(bp, reg_addr, aeu_mask);
@@ -5963,6 +6302,50 @@ static void enable_blocks_attention(struct bnx2x *bp)
REG_WR(bp, PBF_REG_PBF_INT_MASK, 0X18); /* bit 3,4 masked */
}
+static const struct {
+ u32 addr;
+ u32 mask;
+} bnx2x_parity_mask[] = {
+ {PXP_REG_PXP_PRTY_MASK, 0xffffffff},
+ {PXP2_REG_PXP2_PRTY_MASK_0, 0xffffffff},
+ {PXP2_REG_PXP2_PRTY_MASK_1, 0xffffffff},
+ {HC_REG_HC_PRTY_MASK, 0xffffffff},
+ {MISC_REG_MISC_PRTY_MASK, 0xffffffff},
+ {QM_REG_QM_PRTY_MASK, 0x0},
+ {DORQ_REG_DORQ_PRTY_MASK, 0x0},
+ {GRCBASE_UPB + PB_REG_PB_PRTY_MASK, 0x0},
+ {GRCBASE_XPB + PB_REG_PB_PRTY_MASK, 0x0},
+ {SRC_REG_SRC_PRTY_MASK, 0x4}, /* bit 2 */
+ {CDU_REG_CDU_PRTY_MASK, 0x0},
+ {CFC_REG_CFC_PRTY_MASK, 0x0},
+ {DBG_REG_DBG_PRTY_MASK, 0x0},
+ {DMAE_REG_DMAE_PRTY_MASK, 0x0},
+ {BRB1_REG_BRB1_PRTY_MASK, 0x0},
+ {PRS_REG_PRS_PRTY_MASK, (1<<6)},/* bit 6 */
+ {TSDM_REG_TSDM_PRTY_MASK, 0x18},/* bit 3,4 */
+ {CSDM_REG_CSDM_PRTY_MASK, 0x8}, /* bit 3 */
+ {USDM_REG_USDM_PRTY_MASK, 0x38},/* bit 3,4,5 */
+ {XSDM_REG_XSDM_PRTY_MASK, 0x8}, /* bit 3 */
+ {TSEM_REG_TSEM_PRTY_MASK_0, 0x0},
+ {TSEM_REG_TSEM_PRTY_MASK_1, 0x0},
+ {USEM_REG_USEM_PRTY_MASK_0, 0x0},
+ {USEM_REG_USEM_PRTY_MASK_1, 0x0},
+ {CSEM_REG_CSEM_PRTY_MASK_0, 0x0},
+ {CSEM_REG_CSEM_PRTY_MASK_1, 0x0},
+ {XSEM_REG_XSEM_PRTY_MASK_0, 0x0},
+ {XSEM_REG_XSEM_PRTY_MASK_1, 0x0}
+};
+
+static void enable_blocks_parity(struct bnx2x *bp)
+{
+ int i, mask_arr_len =
+ sizeof(bnx2x_parity_mask)/(sizeof(bnx2x_parity_mask[0]));
+
+ for (i = 0; i < mask_arr_len; i++)
+ REG_WR(bp, bnx2x_parity_mask[i].addr,
+ bnx2x_parity_mask[i].mask);
+}
+
static void bnx2x_reset_common(struct bnx2x *bp)
{
@@ -6306,6 +6689,8 @@ static int bnx2x_init_common(struct bnx2x *bp)
REG_RD(bp, PXP2_REG_PXP2_INT_STS_CLR_0);
enable_blocks_attention(bp);
+ if (CHIP_PARITY_SUPPORTED(bp))
+ enable_blocks_parity(bp);
if (!BP_NOMCP(bp)) {
bnx2x_acquire_phy_lock(bp);
@@ -7657,6 +8042,7 @@ static int bnx2x_nic_load(struct bnx2x *bp, int load_mode)
if (bp->state == BNX2X_STATE_OPEN)
bnx2x_cnic_notify(bp, CNIC_CTL_START_CMD);
#endif
+ bnx2x_inc_load_cnt(bp);
return 0;
@@ -7844,33 +8230,12 @@ static void bnx2x_reset_chip(struct bnx2x *bp, u32 reset_code)
}
}
-/* must be called with rtnl_lock */
-static int bnx2x_nic_unload(struct bnx2x *bp, int unload_mode)
+static void bnx2x_chip_cleanup(struct bnx2x *bp, int unload_mode)
{
int port = BP_PORT(bp);
u32 reset_code = 0;
int i, cnt, rc;
-#ifdef BCM_CNIC
- bnx2x_cnic_notify(bp, CNIC_CTL_STOP_CMD);
-#endif
- bp->state = BNX2X_STATE_CLOSING_WAIT4_HALT;
-
- /* Set "drop all" */
- bp->rx_mode = BNX2X_RX_MODE_NONE;
- bnx2x_set_storm_rx_mode(bp);
-
- /* Disable HW interrupts, NAPI and Tx */
- bnx2x_netif_stop(bp, 1);
-
- del_timer_sync(&bp->timer);
- SHMEM_WR(bp, func_mb[BP_FUNC(bp)].drv_pulse_mb,
- (DRV_PULSE_ALWAYS_ALIVE | bp->fw_drv_pulse_wr_seq));
- bnx2x_stats_handle(bp, STATS_EVENT_STOP);
-
- /* Release IRQs */
- bnx2x_free_irq(bp, false);
-
/* Wait until tx fastpath tasks complete */
for_each_queue(bp, i) {
struct bnx2x_fastpath *fp = &bp->fp[i];
@@ -8011,6 +8376,69 @@ unload_error:
if (!BP_NOMCP(bp))
bnx2x_fw_command(bp, DRV_MSG_CODE_UNLOAD_DONE);
+}
+
+static inline void bnx2x_disable_close_the_gate(struct bnx2x *bp)
+{
+ u32 val;
+
+ DP(NETIF_MSG_HW, "Disabling \"close the gates\"\n");
+
+ if (CHIP_IS_E1(bp)) {
+ int port = BP_PORT(bp);
+ u32 addr = port ? MISC_REG_AEU_MASK_ATTN_FUNC_1 :
+ MISC_REG_AEU_MASK_ATTN_FUNC_0;
+
+ val = REG_RD(bp, addr);
+ val &= ~(0x300);
+ REG_WR(bp, addr, val);
+ } else if (CHIP_IS_E1H(bp)) {
+ val = REG_RD(bp, MISC_REG_AEU_GENERAL_MASK);
+ val &= ~(MISC_AEU_GENERAL_MASK_REG_AEU_PXP_CLOSE_MASK |
+ MISC_AEU_GENERAL_MASK_REG_AEU_NIG_CLOSE_MASK);
+ REG_WR(bp, MISC_REG_AEU_GENERAL_MASK, val);
+ }
+}
+
+/* must be called with rtnl_lock */
+static int bnx2x_nic_unload(struct bnx2x *bp, int unload_mode)
+{
+ int i;
+
+ if (bp->state == BNX2X_STATE_CLOSED) {
+ /* Interface has been removed - nothing to recover */
+ bp->recovery_state = BNX2X_RECOVERY_DONE;
+ bp->is_leader = 0;
+ bnx2x_release_hw_lock(bp, HW_LOCK_RESOURCE_RESERVED_08);
+ smp_wmb();
+
+ return -EINVAL;
+ }
+
+#ifdef BCM_CNIC
+ bnx2x_cnic_notify(bp, CNIC_CTL_STOP_CMD);
+#endif
+ bp->state = BNX2X_STATE_CLOSING_WAIT4_HALT;
+
+ /* Set "drop all" */
+ bp->rx_mode = BNX2X_RX_MODE_NONE;
+ bnx2x_set_storm_rx_mode(bp);
+
+ /* Disable HW interrupts, NAPI and Tx */
+ bnx2x_netif_stop(bp, 1);
+
+ del_timer_sync(&bp->timer);
+ SHMEM_WR(bp, func_mb[BP_FUNC(bp)].drv_pulse_mb,
+ (DRV_PULSE_ALWAYS_ALIVE | bp->fw_drv_pulse_wr_seq));
+ bnx2x_stats_handle(bp, STATS_EVENT_STOP);
+
+ /* Release IRQs */
+ bnx2x_free_irq(bp, false);
+
+ /* Cleanup the chip if needed */
+ if (unload_mode != UNLOAD_RECOVERY)
+ bnx2x_chip_cleanup(bp, unload_mode);
+
bp->port.pmf = 0;
/* Free SKBs, SGEs, TPA pool and driver internals */
@@ -8025,17 +8453,448 @@ unload_error:
netif_carrier_off(bp->dev);
+ /* The last driver must disable a "close the gate" if there is no
+ * parity attention or "process kill" pending.
+ */
+ if ((!bnx2x_dec_load_cnt(bp)) && (!bnx2x_chk_parity_attn(bp)) &&
+ bnx2x_reset_is_done(bp))
+ bnx2x_disable_close_the_gate(bp);
+
+ /* Reset MCP mail box sequence if there is on going recovery */
+ if (unload_mode == UNLOAD_RECOVERY)
+ bp->fw_seq = 0;
+
+ return 0;
+}
+
+/* Close gates #2, #3 and #4: */
+static void bnx2x_set_234_gates(struct bnx2x *bp, bool close)
+{
+ u32 val, addr;
+
+ /* Gates #2 and #4a are closed/opened for "not E1" only */
+ if (!CHIP_IS_E1(bp)) {
+ /* #4 */
+ val = REG_RD(bp, PXP_REG_HST_DISCARD_DOORBELLS);
+ REG_WR(bp, PXP_REG_HST_DISCARD_DOORBELLS,
+ close ? (val | 0x1) : (val & (~(u32)1)));
+ /* #2 */
+ val = REG_RD(bp, PXP_REG_HST_DISCARD_INTERNAL_WRITES);
+ REG_WR(bp, PXP_REG_HST_DISCARD_INTERNAL_WRITES,
+ close ? (val | 0x1) : (val & (~(u32)1)));
+ }
+
+ /* #3 */
+ addr = BP_PORT(bp) ? HC_REG_CONFIG_1 : HC_REG_CONFIG_0;
+ val = REG_RD(bp, addr);
+ REG_WR(bp, addr, (!close) ? (val | 0x1) : (val & (~(u32)1)));
+
+ DP(NETIF_MSG_HW, "%s gates #2, #3 and #4\n",
+ close ? "closing" : "opening");
+ mmiowb();
+}
+
+#define SHARED_MF_CLP_MAGIC 0x80000000 /* `magic' bit */
+
+static void bnx2x_clp_reset_prep(struct bnx2x *bp, u32 *magic_val)
+{
+ /* Do some magic... */
+ u32 val = MF_CFG_RD(bp, shared_mf_config.clp_mb);
+ *magic_val = val & SHARED_MF_CLP_MAGIC;
+ MF_CFG_WR(bp, shared_mf_config.clp_mb, val | SHARED_MF_CLP_MAGIC);
+}
+
+/* Restore the value of the `magic' bit.
+ *
+ * @param pdev Device handle.
+ * @param magic_val Old value of the `magic' bit.
+ */
+static void bnx2x_clp_reset_done(struct bnx2x *bp, u32 magic_val)
+{
+ /* Restore the `magic' bit value... */
+ /* u32 val = SHMEM_RD(bp, mf_cfg.shared_mf_config.clp_mb);
+ SHMEM_WR(bp, mf_cfg.shared_mf_config.clp_mb,
+ (val & (~SHARED_MF_CLP_MAGIC)) | magic_val); */
+ u32 val = MF_CFG_RD(bp, shared_mf_config.clp_mb);
+ MF_CFG_WR(bp, shared_mf_config.clp_mb,
+ (val & (~SHARED_MF_CLP_MAGIC)) | magic_val);
+}
+
+/* Prepares for MCP reset: takes care of CLP configurations.
+ *
+ * @param bp
+ * @param magic_val Old value of 'magic' bit.
+ */
+static void bnx2x_reset_mcp_prep(struct bnx2x *bp, u32 *magic_val)
+{
+ u32 shmem;
+ u32 validity_offset;
+
+ DP(NETIF_MSG_HW, "Starting\n");
+
+ /* Set `magic' bit in order to save MF config */
+ if (!CHIP_IS_E1(bp))
+ bnx2x_clp_reset_prep(bp, magic_val);
+
+ /* Get shmem offset */
+ shmem = REG_RD(bp, MISC_REG_SHARED_MEM_ADDR);
+ validity_offset = offsetof(struct shmem_region, validity_map[0]);
+
+ /* Clear validity map flags */
+ if (shmem > 0)
+ REG_WR(bp, shmem + validity_offset, 0);
+}
+
+#define MCP_TIMEOUT 5000 /* 5 seconds (in ms) */
+#define MCP_ONE_TIMEOUT 100 /* 100 ms */
+
+/* Waits for MCP_ONE_TIMEOUT or MCP_ONE_TIMEOUT*10,
+ * depending on the HW type.
+ *
+ * @param bp
+ */
+static inline void bnx2x_mcp_wait_one(struct bnx2x *bp)
+{
+ /* special handling for emulation and FPGA,
+ wait 10 times longer */
+ if (CHIP_REV_IS_SLOW(bp))
+ msleep(MCP_ONE_TIMEOUT*10);
+ else
+ msleep(MCP_ONE_TIMEOUT);
+}
+
+static int bnx2x_reset_mcp_comp(struct bnx2x *bp, u32 magic_val)
+{
+ u32 shmem, cnt, validity_offset, val;
+ int rc = 0;
+
+ msleep(100);
+
+ /* Get shmem offset */
+ shmem = REG_RD(bp, MISC_REG_SHARED_MEM_ADDR);
+ if (shmem == 0) {
+ BNX2X_ERR("Shmem 0 return failure\n");
+ rc = -ENOTTY;
+ goto exit_lbl;
+ }
+
+ validity_offset = offsetof(struct shmem_region, validity_map[0]);
+
+ /* Wait for MCP to come up */
+ for (cnt = 0; cnt < (MCP_TIMEOUT / MCP_ONE_TIMEOUT); cnt++) {
+ /* TBD: its best to check validity map of last port.
+ * currently checks on port 0.
+ */
+ val = REG_RD(bp, shmem + validity_offset);
+ DP(NETIF_MSG_HW, "shmem 0x%x validity map(0x%x)=0x%x\n", shmem,
+ shmem + validity_offset, val);
+
+ /* check that shared memory is valid. */
+ if ((val & (SHR_MEM_VALIDITY_DEV_INFO | SHR_MEM_VALIDITY_MB))
+ == (SHR_MEM_VALIDITY_DEV_INFO | SHR_MEM_VALIDITY_MB))
+ break;
+
+ bnx2x_mcp_wait_one(bp);
+ }
+
+ DP(NETIF_MSG_HW, "Cnt=%d Shmem validity map 0x%x\n", cnt, val);
+
+ /* Check that shared memory is valid. This indicates that MCP is up. */
+ if ((val & (SHR_MEM_VALIDITY_DEV_INFO | SHR_MEM_VALIDITY_MB)) !=
+ (SHR_MEM_VALIDITY_DEV_INFO | SHR_MEM_VALIDITY_MB)) {
+ BNX2X_ERR("Shmem signature not present. MCP is not up !!\n");
+ rc = -ENOTTY;
+ goto exit_lbl;
+ }
+
+exit_lbl:
+ /* Restore the `magic' bit value */
+ if (!CHIP_IS_E1(bp))
+ bnx2x_clp_reset_done(bp, magic_val);
+
+ return rc;
+}
+
+static void bnx2x_pxp_prep(struct bnx2x *bp)
+{
+ if (!CHIP_IS_E1(bp)) {
+ REG_WR(bp, PXP2_REG_RD_START_INIT, 0);
+ REG_WR(bp, PXP2_REG_RQ_RBC_DONE, 0);
+ REG_WR(bp, PXP2_REG_RQ_CFG_DONE, 0);
+ mmiowb();
+ }
+}
+
+/*
+ * Reset the whole chip except for:
+ * - PCIE core
+ * - PCI Glue, PSWHST, PXP/PXP2 RF (all controlled by
+ * one reset bit)
+ * - IGU
+ * - MISC (including AEU)
+ * - GRC
+ * - RBCN, RBCP
+ */
+static void bnx2x_process_kill_chip_reset(struct bnx2x *bp)
+{
+ u32 not_reset_mask1, reset_mask1, not_reset_mask2, reset_mask2;
+
+ not_reset_mask1 =
+ MISC_REGISTERS_RESET_REG_1_RST_HC |
+ MISC_REGISTERS_RESET_REG_1_RST_PXPV |
+ MISC_REGISTERS_RESET_REG_1_RST_PXP;
+
+ not_reset_mask2 =
+ MISC_REGISTERS_RESET_REG_2_RST_MDIO |
+ MISC_REGISTERS_RESET_REG_2_RST_EMAC0_HARD_CORE |
+ MISC_REGISTERS_RESET_REG_2_RST_EMAC1_HARD_CORE |
+ MISC_REGISTERS_RESET_REG_2_RST_MISC_CORE |
+ MISC_REGISTERS_RESET_REG_2_RST_RBCN |
+ MISC_REGISTERS_RESET_REG_2_RST_GRC |
+ MISC_REGISTERS_RESET_REG_2_RST_MCP_N_RESET_REG_HARD_CORE |
+ MISC_REGISTERS_RESET_REG_2_RST_MCP_N_HARD_CORE_RST_B;
+
+ reset_mask1 = 0xffffffff;
+
+ if (CHIP_IS_E1(bp))
+ reset_mask2 = 0xffff;
+ else
+ reset_mask2 = 0x1ffff;
+
+ REG_WR(bp, GRCBASE_MISC + MISC_REGISTERS_RESET_REG_1_CLEAR,
+ reset_mask1 & (~not_reset_mask1));
+ REG_WR(bp, GRCBASE_MISC + MISC_REGISTERS_RESET_REG_2_CLEAR,
+ reset_mask2 & (~not_reset_mask2));
+
+ barrier();
+ mmiowb();
+
+ REG_WR(bp, GRCBASE_MISC + MISC_REGISTERS_RESET_REG_1_SET, reset_mask1);
+ REG_WR(bp, GRCBASE_MISC + MISC_REGISTERS_RESET_REG_2_SET, reset_mask2);
+ mmiowb();
+}
+
+static int bnx2x_process_kill(struct bnx2x *bp)
+{
+ int cnt = 1000;
+ u32 val = 0;
+ u32 sr_cnt, blk_cnt, port_is_idle_0, port_is_idle_1, pgl_exp_rom2;
+
+
+ /* Empty the Tetris buffer, wait for 1s */
+ do {
+ sr_cnt = REG_RD(bp, PXP2_REG_RD_SR_CNT);
+ blk_cnt = REG_RD(bp, PXP2_REG_RD_BLK_CNT);
+ port_is_idle_0 = REG_RD(bp, PXP2_REG_RD_PORT_IS_IDLE_0);
+ port_is_idle_1 = REG_RD(bp, PXP2_REG_RD_PORT_IS_IDLE_1);
+ pgl_exp_rom2 = REG_RD(bp, PXP2_REG_PGL_EXP_ROM2);
+ if ((sr_cnt == 0x7e) && (blk_cnt == 0xa0) &&
+ ((port_is_idle_0 & 0x1) == 0x1) &&
+ ((port_is_idle_1 & 0x1) == 0x1) &&
+ (pgl_exp_rom2 == 0xffffffff))
+ break;
+ msleep(1);
+ } while (cnt-- > 0);
+
+ if (cnt <= 0) {
+ DP(NETIF_MSG_HW, "Tetris buffer didn't get empty or there"
+ " are still"
+ " outstanding read requests after 1s!\n");
+ DP(NETIF_MSG_HW, "sr_cnt=0x%08x, blk_cnt=0x%08x,"
+ " port_is_idle_0=0x%08x,"
+ " port_is_idle_1=0x%08x, pgl_exp_rom2=0x%08x\n",
+ sr_cnt, blk_cnt, port_is_idle_0, port_is_idle_1,
+ pgl_exp_rom2);
+ return -EAGAIN;
+ }
+
+ barrier();
+
+ /* Close gates #2, #3 and #4 */
+ bnx2x_set_234_gates(bp, true);
+
+ /* TBD: Indicate that "process kill" is in progress to MCP */
+
+ /* Clear "unprepared" bit */
+ REG_WR(bp, MISC_REG_UNPREPARED, 0);
+ barrier();
+
+ /* Make sure all is written to the chip before the reset */
+ mmiowb();
+
+ /* Wait for 1ms to empty GLUE and PCI-E core queues,
+ * PSWHST, GRC and PSWRD Tetris buffer.
+ */
+ msleep(1);
+
+ /* Prepare to chip reset: */
+ /* MCP */
+ bnx2x_reset_mcp_prep(bp, &val);
+
+ /* PXP */
+ bnx2x_pxp_prep(bp);
+ barrier();
+
+ /* reset the chip */
+ bnx2x_process_kill_chip_reset(bp);
+ barrier();
+
+ /* Recover after reset: */
+ /* MCP */
+ if (bnx2x_reset_mcp_comp(bp, val))
+ return -EAGAIN;
+
+ /* PXP */
+ bnx2x_pxp_prep(bp);
+
+ /* Open the gates #2, #3 and #4 */
+ bnx2x_set_234_gates(bp, false);
+
+ /* TBD: IGU/AEU preparation bring back the AEU/IGU to a
+ * reset state, re-enable attentions. */
+
return 0;
}
+static int bnx2x_leader_reset(struct bnx2x *bp)
+{
+ int rc = 0;
+ /* Try to recover after the failure */
+ if (bnx2x_process_kill(bp)) {
+ printk(KERN_ERR "%s: Something bad had happen! Aii!\n",
+ bp->dev->name);
+ rc = -EAGAIN;
+ goto exit_leader_reset;
+ }
+
+ /* Clear "reset is in progress" bit and update the driver state */
+ bnx2x_set_reset_done(bp);
+ bp->recovery_state = BNX2X_RECOVERY_DONE;
+
+exit_leader_reset:
+ bp->is_leader = 0;
+ bnx2x_release_hw_lock(bp, HW_LOCK_RESOURCE_RESERVED_08);
+ smp_wmb();
+ return rc;
+}
+
+static int bnx2x_set_power_state(struct bnx2x *bp, pci_power_t state);
+
+/* Assumption: runs under rtnl lock. This together with the fact
+ * that it's called only from bnx2x_reset_task() ensure that it
+ * will never be called when netif_running(bp->dev) is false.
+ */
+static void bnx2x_parity_recover(struct bnx2x *bp)
+{
+ DP(NETIF_MSG_HW, "Handling parity\n");
+ while (1) {
+ switch (bp->recovery_state) {
+ case BNX2X_RECOVERY_INIT:
+ DP(NETIF_MSG_HW, "State is BNX2X_RECOVERY_INIT\n");
+ /* Try to get a LEADER_LOCK HW lock */
+ if (bnx2x_trylock_hw_lock(bp,
+ HW_LOCK_RESOURCE_RESERVED_08))
+ bp->is_leader = 1;
+
+ /* Stop the driver */
+ /* If interface has been removed - break */
+ if (bnx2x_nic_unload(bp, UNLOAD_RECOVERY))
+ return;
+
+ bp->recovery_state = BNX2X_RECOVERY_WAIT;
+ /* Ensure "is_leader" and "recovery_state"
+ * update values are seen on other CPUs
+ */
+ smp_wmb();
+ break;
+
+ case BNX2X_RECOVERY_WAIT:
+ DP(NETIF_MSG_HW, "State is BNX2X_RECOVERY_WAIT\n");
+ if (bp->is_leader) {
+ u32 load_counter = bnx2x_get_load_cnt(bp);
+ if (load_counter) {
+ /* Wait until all other functions get
+ * down.
+ */
+ schedule_delayed_work(&bp->reset_task,
+ HZ/10);
+ return;
+ } else {
+ /* If all other functions got down -
+ * try to bring the chip back to
+ * normal. In any case it's an exit
+ * point for a leader.
+ */
+ if (bnx2x_leader_reset(bp) ||
+ bnx2x_nic_load(bp, LOAD_NORMAL)) {
+ printk(KERN_ERR"%s: Recovery "
+ "has failed. Power cycle is "
+ "needed.\n", bp->dev->name);
+ /* Disconnect this device */
+ netif_device_detach(bp->dev);
+ /* Block ifup for all function
+ * of this ASIC until
+ * "process kill" or power
+ * cycle.
+ */
+ bnx2x_set_reset_in_progress(bp);
+ /* Shut down the power */
+ bnx2x_set_power_state(bp,
+ PCI_D3hot);
+ return;
+ }
+
+ return;
+ }
+ } else { /* non-leader */
+ if (!bnx2x_reset_is_done(bp)) {
+ /* Try to get a LEADER_LOCK HW lock as
+ * long as a former leader may have
+ * been unloaded by the user or
+ * released a leadership by another
+ * reason.
+ */
+ if (bnx2x_trylock_hw_lock(bp,
+ HW_LOCK_RESOURCE_RESERVED_08)) {
+ /* I'm a leader now! Restart a
+ * switch case.
+ */
+ bp->is_leader = 1;
+ break;
+ }
+
+ schedule_delayed_work(&bp->reset_task,
+ HZ/10);
+ return;
+
+ } else { /* A leader has completed
+ * the "process kill". It's an exit
+ * point for a non-leader.
+ */
+ bnx2x_nic_load(bp, LOAD_NORMAL);
+ bp->recovery_state =
+ BNX2X_RECOVERY_DONE;
+ smp_wmb();
+ return;
+ }
+ }
+ default:
+ return;
+ }
+ }
+}
+
+/* bnx2x_nic_unload() flushes the bnx2x_wq, thus reset task is
+ * scheduled on a general queue in order to prevent a dead lock.
+ */
static void bnx2x_reset_task(struct work_struct *work)
{
- struct bnx2x *bp = container_of(work, struct bnx2x, reset_task);
+ struct bnx2x *bp = container_of(work, struct bnx2x, reset_task.work);
#ifdef BNX2X_STOP_ON_ERROR
BNX2X_ERR("reset task called but STOP_ON_ERROR defined"
" so reset not done to allow debug dump,\n"
- " you will need to reboot when done\n");
+ KERN_ERR " you will need to reboot when done\n");
return;
#endif
@@ -8044,8 +8903,12 @@ static void bnx2x_reset_task(struct work_struct *work)
if (!netif_running(bp->dev))
goto reset_task_exit;
- bnx2x_nic_unload(bp, UNLOAD_NORMAL);
- bnx2x_nic_load(bp, LOAD_NORMAL);
+ if (unlikely(bp->recovery_state != BNX2X_RECOVERY_DONE))
+ bnx2x_parity_recover(bp);
+ else {
+ bnx2x_nic_unload(bp, UNLOAD_NORMAL);
+ bnx2x_nic_load(bp, LOAD_NORMAL);
+ }
reset_task_exit:
rtnl_unlock();
@@ -8913,7 +9776,7 @@ static int __devinit bnx2x_init_bp(struct bnx2x *bp)
#endif
INIT_DELAYED_WORK(&bp->sp_task, bnx2x_sp_task);
- INIT_WORK(&bp->reset_task, bnx2x_reset_task);
+ INIT_DELAYED_WORK(&bp->reset_task, bnx2x_reset_task);
rc = bnx2x_get_hwinfo(bp);
@@ -9888,6 +10751,11 @@ static int bnx2x_set_ringparam(struct net_device *dev,
struct bnx2x *bp = netdev_priv(dev);
int rc = 0;
+ if (bp->recovery_state != BNX2X_RECOVERY_DONE) {
+ printk(KERN_ERR "Handling parity error recovery. Try again later\n");
+ return -EAGAIN;
+ }
+
if ((ering->rx_pending > MAX_RX_AVAIL) ||
(ering->tx_pending > MAX_TX_AVAIL) ||
(ering->tx_pending <= MAX_SKB_FRAGS + 4))
@@ -9973,6 +10841,11 @@ static int bnx2x_set_flags(struct net_device *dev, u32 data)
int changed = 0;
int rc = 0;
+ if (bp->recovery_state != BNX2X_RECOVERY_DONE) {
+ printk(KERN_ERR "Handling parity error recovery. Try again later\n");
+ return -EAGAIN;
+ }
+
/* TPA requires Rx CSUM offloading */
if ((data & ETH_FLAG_LRO) && bp->rx_csum) {
if (!disable_tpa) {
@@ -10009,6 +10882,11 @@ static int bnx2x_set_rx_csum(struct net_device *dev, u32 data)
struct bnx2x *bp = netdev_priv(dev);
int rc = 0;
+ if (bp->recovery_state != BNX2X_RECOVERY_DONE) {
+ printk(KERN_ERR "Handling parity error recovery. Try again later\n");
+ return -EAGAIN;
+ }
+
bp->rx_csum = data;
/* Disable TPA, when Rx CSUM is disabled. Otherwise all
@@ -10471,6 +11349,12 @@ static void bnx2x_self_test(struct net_device *dev,
{
struct bnx2x *bp = netdev_priv(dev);
+ if (bp->recovery_state != BNX2X_RECOVERY_DONE) {
+ printk(KERN_ERR "Handling parity error recovery. Try again later\n");
+ etest->flags |= ETH_TEST_FL_FAILED;
+ return;
+ }
+
memset(buf, 0, sizeof(u64) * BNX2X_NUM_TESTS);
if (!netif_running(dev))
@@ -11456,6 +12340,40 @@ static int bnx2x_open(struct net_device *dev)
bnx2x_set_power_state(bp, PCI_D0);
+ if (!bnx2x_reset_is_done(bp)) {
+ do {
+ /* Reset MCP mail box sequence if there is on going
+ * recovery
+ */
+ bp->fw_seq = 0;
+
+ /* If it's the first function to load and reset done
+ * is still not cleared it may mean that. We don't
+ * check the attention state here because it may have
+ * already been cleared by a "common" reset but we
+ * shell proceed with "process kill" anyway.
+ */
+ if ((bnx2x_get_load_cnt(bp) == 0) &&
+ bnx2x_trylock_hw_lock(bp,
+ HW_LOCK_RESOURCE_RESERVED_08) &&
+ (!bnx2x_leader_reset(bp))) {
+ DP(NETIF_MSG_HW, "Recovered in open\n");
+ break;
+ }
+
+ bnx2x_set_power_state(bp, PCI_D3hot);
+
+ printk(KERN_ERR"%s: Recovery flow hasn't been properly"
+ " completed yet. Try again later. If u still see this"
+ " message after a few retries then power cycle is"
+ " required.\n", bp->dev->name);
+
+ return -EAGAIN;
+ } while (0);
+ }
+
+ bp->recovery_state = BNX2X_RECOVERY_DONE;
+
return bnx2x_nic_load(bp, LOAD_OPEN);
}
@@ -11694,6 +12612,11 @@ static int bnx2x_change_mtu(struct net_device *dev, int new_mtu)
struct bnx2x *bp = netdev_priv(dev);
int rc = 0;
+ if (bp->recovery_state != BNX2X_RECOVERY_DONE) {
+ printk(KERN_ERR "Handling parity error recovery. Try again later\n");
+ return -EAGAIN;
+ }
+
if ((new_mtu > ETH_MAX_JUMBO_PACKET_SIZE) ||
((new_mtu + ETH_HLEN) < ETH_MIN_PACKET_SIZE))
return -EINVAL;
@@ -11721,7 +12644,7 @@ static void bnx2x_tx_timeout(struct net_device *dev)
bnx2x_panic();
#endif
/* This allows the netif to be shutdown gracefully before resetting */
- schedule_work(&bp->reset_task);
+ schedule_delayed_work(&bp->reset_task, 0);
}
#ifdef BCM_VLAN
@@ -11880,6 +12803,9 @@ static int __devinit bnx2x_init_dev(struct pci_dev *pdev,
REG_WR(bp, PXP2_REG_PGL_ADDR_90_F0 + BP_PORT(bp)*16, 0);
REG_WR(bp, PXP2_REG_PGL_ADDR_94_F0 + BP_PORT(bp)*16, 0);
+ /* Reset the load counter */
+ bnx2x_clear_load_cnt(bp);
+
dev->watchdog_timeo = TX_TIMEOUT;
dev->netdev_ops = &bnx2x_netdev_ops;
@@ -12205,6 +13131,9 @@ static void __devexit bnx2x_remove_one(struct pci_dev *pdev)
unregister_netdev(dev);
+ /* Make sure RESET task is not scheduled before continuing */
+ cancel_delayed_work_sync(&bp->reset_task);
+
kfree(bp->init_ops_offsets);
kfree(bp->init_ops);
kfree(bp->init_data);
@@ -12268,6 +13197,11 @@ static int bnx2x_resume(struct pci_dev *pdev)
}
bp = netdev_priv(dev);
+ if (bp->recovery_state != BNX2X_RECOVERY_DONE) {
+ printk(KERN_ERR "Handling parity error recovery. Try again later\n");
+ return -EAGAIN;
+ }
+
rtnl_lock();
pci_restore_state(pdev);
@@ -12434,6 +13368,11 @@ static void bnx2x_io_resume(struct pci_dev *pdev)
struct net_device *dev = pci_get_drvdata(pdev);
struct bnx2x *bp = netdev_priv(dev);
+ if (bp->recovery_state != BNX2X_RECOVERY_DONE) {
+ printk(KERN_ERR "Handling parity error recovery. Try again later\n");
+ return;
+ }
+
rtnl_lock();
bnx2x_eeh_recover(bp);
diff --git a/drivers/net/bnx2x_reg.h b/drivers/net/bnx2x_reg.h
index 944964e..a1f3bf0 100644
--- a/drivers/net/bnx2x_reg.h
+++ b/drivers/net/bnx2x_reg.h
@@ -766,6 +766,8 @@
#define MCP_REG_MCPR_NVM_SW_ARB 0x86420
#define MCP_REG_MCPR_NVM_WRITE 0x86408
#define MCP_REG_MCPR_SCRATCH 0xa0000
+#define MISC_AEU_GENERAL_MASK_REG_AEU_NIG_CLOSE_MASK (0x1<<1)
+#define MISC_AEU_GENERAL_MASK_REG_AEU_PXP_CLOSE_MASK (0x1<<0)
/* [R 32] read first 32 bit after inversion of function 0. mapped as
follows: [0] NIG attention for function0; [1] NIG attention for
function1; [2] GPIO1 mcp; [3] GPIO2 mcp; [4] GPIO3 mcp; [5] GPIO4 mcp;
@@ -1249,6 +1251,8 @@
#define MISC_REG_E1HMF_MODE 0xa5f8
/* [RW 32] Debug only: spare RW register reset by core reset */
#define MISC_REG_GENERIC_CR_0 0xa460
+/* [RW 32] Debug only: spare RW register reset by por reset */
+#define MISC_REG_GENERIC_POR_1 0xa474
/* [RW 32] GPIO. [31-28] FLOAT port 0; [27-24] FLOAT port 0; When any of
these bits is written as a '1'; the corresponding SPIO bit will turn off
it's drivers and become an input. This is the reset state of all GPIO
@@ -1438,7 +1442,7 @@
(~misc_registers_sw_timer_cfg_4.sw_timer_cfg_4[1] ) is set */
#define MISC_REG_SW_TIMER_RELOAD_VAL_4 0xa2fc
/* [RW 32] the value of the counter for sw timers1-8. there are 8 addresses
- in this register. addres 0 - timer 1; address - timer 2�address 7 -
+ in this register. addres 0 - timer 1; address 1 - timer 2, ... address 7 -
timer 8 */
#define MISC_REG_SW_TIMER_VAL 0xa5c0
/* [RW 1] Set by the MCP to remember if one or more of the drivers is/are
@@ -2407,10 +2411,16 @@
/* [R 8] debug only: A bit mask for all PSWHST arbiter clients. '1' means
this client is waiting for the arbiter. */
#define PXP_REG_HST_CLIENTS_WAITING_TO_ARB 0x103008
+/* [RW 1] When 1; doorbells are discarded and not passed to doorbell queue
+ block. Should be used for close the gates. */
+#define PXP_REG_HST_DISCARD_DOORBELLS 0x1030a4
/* [R 1] debug only: '1' means this PSWHST is discarding doorbells. This bit
should update accoring to 'hst_discard_doorbells' register when the state
machine is idle */
#define PXP_REG_HST_DISCARD_DOORBELLS_STATUS 0x1030a0
+/* [RW 1] When 1; new internal writes arriving to the block are discarded.
+ Should be used for close the gates. */
+#define PXP_REG_HST_DISCARD_INTERNAL_WRITES 0x1030a8
/* [R 6] debug only: A bit mask for all PSWHST internal write clients. '1'
means this PSWHST is discarding inputs from this client. Each bit should
update accoring to 'hst_discard_internal_writes' register when the state
@@ -4422,11 +4432,21 @@
#define MISC_REGISTERS_GPIO_PORT_SHIFT 4
#define MISC_REGISTERS_GPIO_SET_POS 8
#define MISC_REGISTERS_RESET_REG_1_CLEAR 0x588
+#define MISC_REGISTERS_RESET_REG_1_RST_HC (0x1<<29)
#define MISC_REGISTERS_RESET_REG_1_RST_NIG (0x1<<7)
+#define MISC_REGISTERS_RESET_REG_1_RST_PXP (0x1<<26)
+#define MISC_REGISTERS_RESET_REG_1_RST_PXPV (0x1<<27)
#define MISC_REGISTERS_RESET_REG_1_SET 0x584
#define MISC_REGISTERS_RESET_REG_2_CLEAR 0x598
#define MISC_REGISTERS_RESET_REG_2_RST_BMAC0 (0x1<<0)
#define MISC_REGISTERS_RESET_REG_2_RST_EMAC0_HARD_CORE (0x1<<14)
+#define MISC_REGISTERS_RESET_REG_2_RST_EMAC1_HARD_CORE (0x1<<15)
+#define MISC_REGISTERS_RESET_REG_2_RST_GRC (0x1<<4)
+#define MISC_REGISTERS_RESET_REG_2_RST_MCP_N_HARD_CORE_RST_B (0x1<<6)
+#define MISC_REGISTERS_RESET_REG_2_RST_MCP_N_RESET_REG_HARD_CORE (0x1<<5)
+#define MISC_REGISTERS_RESET_REG_2_RST_MDIO (0x1<<13)
+#define MISC_REGISTERS_RESET_REG_2_RST_MISC_CORE (0x1<<11)
+#define MISC_REGISTERS_RESET_REG_2_RST_RBCN (0x1<<9)
#define MISC_REGISTERS_RESET_REG_2_SET 0x594
#define MISC_REGISTERS_RESET_REG_3_CLEAR 0x5a8
#define MISC_REGISTERS_RESET_REG_3_MISC_NIG_MUX_SERDES0_IDDQ (0x1<<1)
@@ -4454,6 +4474,7 @@
#define HW_LOCK_RESOURCE_GPIO 1
#define HW_LOCK_RESOURCE_MDIO 0
#define HW_LOCK_RESOURCE_PORT0_ATT_MASK 3
+#define HW_LOCK_RESOURCE_RESERVED_08 8
#define HW_LOCK_RESOURCE_SPIO 2
#define HW_LOCK_RESOURCE_UNDI 5
#define PRS_FLAG_OVERETH_IPV4 1
@@ -4474,6 +4495,10 @@
#define AEU_INPUTS_ATTN_BITS_GPIO3_FUNCTION_0 (1<<5)
#define AEU_INPUTS_ATTN_BITS_GPIO3_FUNCTION_1 (1<<9)
#define AEU_INPUTS_ATTN_BITS_IGU_PARITY_ERROR (1<<12)
+#define AEU_INPUTS_ATTN_BITS_MCP_LATCHED_ROM_PARITY (1<<28)
+#define AEU_INPUTS_ATTN_BITS_MCP_LATCHED_SCPAD_PARITY (1<<31)
+#define AEU_INPUTS_ATTN_BITS_MCP_LATCHED_UMP_RX_PARITY (1<<29)
+#define AEU_INPUTS_ATTN_BITS_MCP_LATCHED_UMP_TX_PARITY (1<<30)
#define AEU_INPUTS_ATTN_BITS_MISC_HW_INTERRUPT (1<<15)
#define AEU_INPUTS_ATTN_BITS_MISC_PARITY_ERROR (1<<14)
#define AEU_INPUTS_ATTN_BITS_PARSER_PARITY_ERROR (1<<20)
--
1.7.0.4
--
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