qlge: Add basic firmware dump.

Adding the infrstructure and basic data for the firmware
core dump.
The firmware coredump is turned OFF by default.  There will be no
memory allocations for data dumps to the log.

Signed-off-by: Ron Mercer <ron.mercer@qlogic.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 523 insertions, 0 deletions

diff --git a/drivers/net/qlge/qlge_dbg.c b/drivers/net/qlge/qlge_dbg.c
index 9f58c4710761..1d026141b78d 100644
--- a/drivers/net/qlge/qlge_dbg.c
+++ b/drivers/net/qlge/qlge_dbg.c
@@ -91,6 +91,179 @@ err:
 	return status;
 }
 
+/* Read the MPI Processor shadow registers */
+static int ql_get_mpi_shadow_regs(struct ql_adapter *qdev, u32 * buf)
+{
+	u32 i;
+	int status;
+
+	for (i = 0; i < MPI_CORE_SH_REGS_CNT; i++, buf++) {
+		status = ql_write_mpi_reg(qdev, RISC_124,
+				(SHADOW_OFFSET | i << SHADOW_REG_SHIFT));
+		if (status)
+			goto end;
+		status = ql_read_mpi_reg(qdev, RISC_127, buf);
+		if (status)
+			goto end;
+	}
+end:
+	return status;
+}
+
+/* Read the MPI Processor core registers */
+static int ql_get_mpi_regs(struct ql_adapter *qdev, u32 * buf,
+				u32 offset, u32 count)
+{
+	int i, status = 0;
+	for (i = 0; i < count; i++, buf++) {
+		status = ql_read_mpi_reg(qdev, offset + i, buf);
+		if (status)
+			return status;
+	}
+	return status;
+}
+
+
+/* Read out the routing index registers */
+static int ql_get_routing_index_registers(struct ql_adapter *qdev, u32 *buf)
+{
+	int status;
+	u32 type, index, index_max;
+	u32 result_index;
+	u32 result_data;
+	u32 val;
+
+	status = ql_sem_spinlock(qdev, SEM_RT_IDX_MASK);
+	if (status)
+		return status;
+
+	for (type = 0; type < 4; type++) {
+		if (type < 2)
+			index_max = 8;
+		else
+			index_max = 16;
+		for (index = 0; index < index_max; index++) {
+			val = RT_IDX_RS
+				| (type << RT_IDX_TYPE_SHIFT)
+				| (index << RT_IDX_IDX_SHIFT);
+			ql_write32(qdev, RT_IDX, val);
+			result_index = 0;
+			while ((result_index & RT_IDX_MR) == 0)
+				result_index = ql_read32(qdev, RT_IDX);
+			result_data = ql_read32(qdev, RT_DATA);
+			*buf = type;
+			buf++;
+			*buf = index;
+			buf++;
+			*buf = result_index;
+			buf++;
+			*buf = result_data;
+			buf++;
+		}
+	}
+	ql_sem_unlock(qdev, SEM_RT_IDX_MASK);
+	return status;
+}
+
+/* Read out the MAC protocol registers */
+static void ql_get_mac_protocol_registers(struct ql_adapter *qdev, u32 *buf)
+{
+	u32 result_index, result_data;
+	u32 type;
+	u32 index;
+	u32 offset;
+	u32 val;
+	u32 initial_val = MAC_ADDR_RS;
+	u32 max_index;
+	u32 max_offset;
+
+	for (type = 0; type < MAC_ADDR_TYPE_COUNT; type++) {
+		switch (type) {
+
+		case 0: /* CAM */
+			initial_val |= MAC_ADDR_ADR;
+			max_index = MAC_ADDR_MAX_CAM_ENTRIES;
+			max_offset = MAC_ADDR_MAX_CAM_WCOUNT;
+			break;
+		case 1: /* Multicast MAC Address */
+			max_index = MAC_ADDR_MAX_CAM_WCOUNT;
+			max_offset = MAC_ADDR_MAX_CAM_WCOUNT;
+			break;
+		case 2: /* VLAN filter mask */
+		case 3: /* MC filter mask */
+			max_index = MAC_ADDR_MAX_CAM_WCOUNT;
+			max_offset = MAC_ADDR_MAX_CAM_WCOUNT;
+			break;
+		case 4: /* FC MAC addresses */
+			max_index = MAC_ADDR_MAX_FC_MAC_ENTRIES;
+			max_offset = MAC_ADDR_MAX_FC_MAC_WCOUNT;
+			break;
+		case 5: /* Mgmt MAC addresses */
+			max_index = MAC_ADDR_MAX_MGMT_MAC_ENTRIES;
+			max_offset = MAC_ADDR_MAX_MGMT_MAC_WCOUNT;
+			break;
+		case 6: /* Mgmt VLAN addresses */
+			max_index = MAC_ADDR_MAX_MGMT_VLAN_ENTRIES;
+			max_offset = MAC_ADDR_MAX_MGMT_VLAN_WCOUNT;
+			break;
+		case 7: /* Mgmt IPv4 address */
+			max_index = MAC_ADDR_MAX_MGMT_V4_ENTRIES;
+			max_offset = MAC_ADDR_MAX_MGMT_V4_WCOUNT;
+			break;
+		case 8: /* Mgmt IPv6 address */
+			max_index = MAC_ADDR_MAX_MGMT_V6_ENTRIES;
+			max_offset = MAC_ADDR_MAX_MGMT_V6_WCOUNT;
+			break;
+		case 9: /* Mgmt TCP/UDP Dest port */
+			max_index = MAC_ADDR_MAX_MGMT_TU_DP_ENTRIES;
+			max_offset = MAC_ADDR_MAX_MGMT_TU_DP_WCOUNT;
+			break;
+		default:
+			printk(KERN_ERR"Bad type!!! 0x%08x\n", type);
+			max_index = 0;
+			max_offset = 0;
+			break;
+		}
+		for (index = 0; index < max_index; index++) {
+			for (offset = 0; offset < max_offset; offset++) {
+				val = initial_val
+					| (type << MAC_ADDR_TYPE_SHIFT)
+					| (index << MAC_ADDR_IDX_SHIFT)
+					| (offset);
+				ql_write32(qdev, MAC_ADDR_IDX, val);
+				result_index = 0;
+				while ((result_index & MAC_ADDR_MR) == 0) {
+					result_index = ql_read32(qdev,
+								MAC_ADDR_IDX);
+				}
+				result_data = ql_read32(qdev, MAC_ADDR_DATA);
+				*buf = result_index;
+				buf++;
+				*buf = result_data;
+				buf++;
+			}
+		}
+	}
+}
+
+static void ql_get_sem_registers(struct ql_adapter *qdev, u32 *buf)
+{
+	u32 func_num, reg, reg_val;
+	int status;
+
+	for (func_num = 0; func_num < MAX_SEMAPHORE_FUNCTIONS ; func_num++) {
+		reg = MPI_NIC_REG_BLOCK
+			| (func_num << MPI_NIC_FUNCTION_SHIFT)
+			| (SEM / 4);
+		status = ql_read_mpi_reg(qdev, reg, &reg_val);
+		*buf = reg_val;
+		/* if the read failed then dead fill the element. */
+		if (!status)
+			*buf = 0xdeadbeef;
+		buf++;
+	}
+}
+
 /* Create a coredump segment header */
 static void ql_build_coredump_seg_header(
 		struct mpi_coredump_segment_header *seg_hdr,
@@ -103,6 +276,329 @@ static void ql_build_coredump_seg_header(
 	memcpy(seg_hdr->description, desc, (sizeof(seg_hdr->description)) - 1);
 }
 
+/*
+ * This function should be called when a coredump / probedump
+ * is to be extracted from the HBA. It is assumed there is a
+ * qdev structure that contains the base address of the register
+ * space for this function as well as a coredump structure that
+ * will contain the dump.
+ */
+int ql_core_dump(struct ql_adapter *qdev, struct ql_mpi_coredump *mpi_coredump)
+{
+	int status;
+	int i;
+
+	if (!mpi_coredump) {
+		QPRINTK(qdev, DRV, ERR,
+			"No memory available.\n");
+		return -ENOMEM;
+	}
+
+	/* Try to get the spinlock, but dont worry if
+	 * it isn't available.  If the firmware died it
+	 * might be holding the sem.
+	 */
+	ql_sem_spinlock(qdev, SEM_PROC_REG_MASK);
+
+	status = ql_pause_mpi_risc(qdev);
+	if (status) {
+		QPRINTK(qdev, DRV, ERR,
+			"Failed RISC pause. Status = 0x%.08x\n", status);
+		goto err;
+	}
+
+	/* Insert the global header */
+	memset(&(mpi_coredump->mpi_global_header), 0,
+		sizeof(struct mpi_coredump_global_header));
+	mpi_coredump->mpi_global_header.cookie = MPI_COREDUMP_COOKIE;
+	mpi_coredump->mpi_global_header.headerSize =
+		sizeof(struct mpi_coredump_global_header);
+	mpi_coredump->mpi_global_header.imageSize =
+		sizeof(struct ql_mpi_coredump);
+	memcpy(mpi_coredump->mpi_global_header.idString, "MPI Coredump",
+		sizeof(mpi_coredump->mpi_global_header.idString));
+
+	/* Get generic NIC reg dump */
+	ql_build_coredump_seg_header(&mpi_coredump->nic_regs_seg_hdr,
+			NIC1_CONTROL_SEG_NUM,
+			sizeof(struct mpi_coredump_segment_header) +
+			sizeof(mpi_coredump->nic_regs), "NIC1 Registers");
+
+	if (qdev->func & 1) {
+		/* Odd means our function is NIC 2 */
+		for (i = 0; i < NIC_REGS_DUMP_WORD_COUNT; i++)
+			mpi_coredump->nic2_regs[i] =
+					 ql_read32(qdev, i * sizeof(u32));
+	} else {
+		/* Even means our function is NIC 1 */
+		for (i = 0; i < NIC_REGS_DUMP_WORD_COUNT; i++)
+			mpi_coredump->nic_regs[i] =
+					ql_read32(qdev, i * sizeof(u32));
+	}
+
+	ql_build_coredump_seg_header(&mpi_coredump->core_regs_seg_hdr,
+				CORE_SEG_NUM,
+				sizeof(mpi_coredump->core_regs_seg_hdr) +
+				sizeof(mpi_coredump->mpi_core_regs) +
+				sizeof(mpi_coredump->mpi_core_sh_regs),
+				"Core Registers");
+
+	/* Get the MPI Core Registers */
+	status = ql_get_mpi_regs(qdev, &mpi_coredump->mpi_core_regs[0],
+				 MPI_CORE_REGS_ADDR, MPI_CORE_REGS_CNT);
+	if (status)
+		goto err;
+	/* Get the 16 MPI shadow registers */
+	status = ql_get_mpi_shadow_regs(qdev,
+					&mpi_coredump->mpi_core_sh_regs[0]);
+	if (status)
+		goto err;
+
+	/* Get the Test Logic Registers */
+	ql_build_coredump_seg_header(&mpi_coredump->test_logic_regs_seg_hdr,
+				TEST_LOGIC_SEG_NUM,
+				sizeof(struct mpi_coredump_segment_header)
+				+ sizeof(mpi_coredump->test_logic_regs),
+				"Test Logic Regs");
+	status = ql_get_mpi_regs(qdev, &mpi_coredump->test_logic_regs[0],
+				 TEST_REGS_ADDR, TEST_REGS_CNT);
+	if (status)
+		goto err;
+
+	/* Get the RMII Registers */
+	ql_build_coredump_seg_header(&mpi_coredump->rmii_regs_seg_hdr,
+				RMII_SEG_NUM,
+				sizeof(struct mpi_coredump_segment_header)
+				+ sizeof(mpi_coredump->rmii_regs),
+				"RMII Registers");
+	status = ql_get_mpi_regs(qdev, &mpi_coredump->rmii_regs[0],
+				 RMII_REGS_ADDR, RMII_REGS_CNT);
+	if (status)
+		goto err;
+
+	/* Get the FCMAC1 Registers */
+	ql_build_coredump_seg_header(&mpi_coredump->fcmac1_regs_seg_hdr,
+				FCMAC1_SEG_NUM,
+				sizeof(struct mpi_coredump_segment_header)
+				+ sizeof(mpi_coredump->fcmac1_regs),
+				"FCMAC1 Registers");
+	status = ql_get_mpi_regs(qdev, &mpi_coredump->fcmac1_regs[0],
+				 FCMAC1_REGS_ADDR, FCMAC_REGS_CNT);
+	if (status)
+		goto err;
+
+	/* Get the FCMAC2 Registers */
+
+	ql_build_coredump_seg_header(&mpi_coredump->fcmac2_regs_seg_hdr,
+				FCMAC2_SEG_NUM,
+				sizeof(struct mpi_coredump_segment_header)
+				+ sizeof(mpi_coredump->fcmac2_regs),
+				"FCMAC2 Registers");
+
+	status = ql_get_mpi_regs(qdev, &mpi_coredump->fcmac2_regs[0],
+				 FCMAC2_REGS_ADDR, FCMAC_REGS_CNT);
+	if (status)
+		goto err;
+
+	/* Get the FC1 MBX Registers */
+	ql_build_coredump_seg_header(&mpi_coredump->fc1_mbx_regs_seg_hdr,
+				FC1_MBOX_SEG_NUM,
+				sizeof(struct mpi_coredump_segment_header)
+				+ sizeof(mpi_coredump->fc1_mbx_regs),
+				"FC1 MBox Regs");
+	status = ql_get_mpi_regs(qdev, &mpi_coredump->fc1_mbx_regs[0],
+				 FC1_MBX_REGS_ADDR, FC_MBX_REGS_CNT);
+	if (status)
+		goto err;
+
+	/* Get the IDE Registers */
+	ql_build_coredump_seg_header(&mpi_coredump->ide_regs_seg_hdr,
+				IDE_SEG_NUM,
+				sizeof(struct mpi_coredump_segment_header)
+				+ sizeof(mpi_coredump->ide_regs),
+				"IDE Registers");
+	status = ql_get_mpi_regs(qdev, &mpi_coredump->ide_regs[0],
+				 IDE_REGS_ADDR, IDE_REGS_CNT);
+	if (status)
+		goto err;
+
+	/* Get the NIC1 MBX Registers */
+	ql_build_coredump_seg_header(&mpi_coredump->nic1_mbx_regs_seg_hdr,
+				NIC1_MBOX_SEG_NUM,
+				sizeof(struct mpi_coredump_segment_header)
+				+ sizeof(mpi_coredump->nic1_mbx_regs),
+				"NIC1 MBox Regs");
+	status = ql_get_mpi_regs(qdev, &mpi_coredump->nic1_mbx_regs[0],
+				 NIC1_MBX_REGS_ADDR, NIC_MBX_REGS_CNT);
+	if (status)
+		goto err;
+
+	/* Get the SMBus Registers */
+	ql_build_coredump_seg_header(&mpi_coredump->smbus_regs_seg_hdr,
+				SMBUS_SEG_NUM,
+				sizeof(struct mpi_coredump_segment_header)
+				+ sizeof(mpi_coredump->smbus_regs),
+				"SMBus Registers");
+	status = ql_get_mpi_regs(qdev, &mpi_coredump->smbus_regs[0],
+				 SMBUS_REGS_ADDR, SMBUS_REGS_CNT);
+	if (status)
+		goto err;
+
+	/* Get the FC2 MBX Registers */
+	ql_build_coredump_seg_header(&mpi_coredump->fc2_mbx_regs_seg_hdr,
+				FC2_MBOX_SEG_NUM,
+				sizeof(struct mpi_coredump_segment_header)
+				+ sizeof(mpi_coredump->fc2_mbx_regs),
+				"FC2 MBox Regs");
+	status = ql_get_mpi_regs(qdev, &mpi_coredump->fc2_mbx_regs[0],
+				 FC2_MBX_REGS_ADDR, FC_MBX_REGS_CNT);
+	if (status)
+		goto err;
+
+	/* Get the NIC2 MBX Registers */
+	ql_build_coredump_seg_header(&mpi_coredump->nic2_mbx_regs_seg_hdr,
+				NIC2_MBOX_SEG_NUM,
+				sizeof(struct mpi_coredump_segment_header)
+				+ sizeof(mpi_coredump->nic2_mbx_regs),
+				"NIC2 MBox Regs");
+	status = ql_get_mpi_regs(qdev, &mpi_coredump->nic2_mbx_regs[0],
+				 NIC2_MBX_REGS_ADDR, NIC_MBX_REGS_CNT);
+	if (status)
+		goto err;
+
+	/* Get the I2C Registers */
+	ql_build_coredump_seg_header(&mpi_coredump->i2c_regs_seg_hdr,
+				I2C_SEG_NUM,
+				sizeof(struct mpi_coredump_segment_header)
+				+ sizeof(mpi_coredump->i2c_regs),
+				"I2C Registers");
+	status = ql_get_mpi_regs(qdev, &mpi_coredump->i2c_regs[0],
+				 I2C_REGS_ADDR, I2C_REGS_CNT);
+	if (status)
+		goto err;
+
+	/* Get the MEMC Registers */
+	ql_build_coredump_seg_header(&mpi_coredump->memc_regs_seg_hdr,
+				MEMC_SEG_NUM,
+				sizeof(struct mpi_coredump_segment_header)
+				+ sizeof(mpi_coredump->memc_regs),
+				"MEMC Registers");
+	status = ql_get_mpi_regs(qdev, &mpi_coredump->memc_regs[0],
+				 MEMC_REGS_ADDR, MEMC_REGS_CNT);
+	if (status)
+		goto err;
+
+	/* Get the PBus Registers */
+	ql_build_coredump_seg_header(&mpi_coredump->pbus_regs_seg_hdr,
+				PBUS_SEG_NUM,
+				sizeof(struct mpi_coredump_segment_header)
+				+ sizeof(mpi_coredump->pbus_regs),
+				"PBUS Registers");
+	status = ql_get_mpi_regs(qdev, &mpi_coredump->pbus_regs[0],
+				 PBUS_REGS_ADDR, PBUS_REGS_CNT);
+	if (status)
+		goto err;
+
+	/* Get the MDE Registers */
+	ql_build_coredump_seg_header(&mpi_coredump->mde_regs_seg_hdr,
+				MDE_SEG_NUM,
+				sizeof(struct mpi_coredump_segment_header)
+				+ sizeof(mpi_coredump->mde_regs),
+				"MDE Registers");
+	status = ql_get_mpi_regs(qdev, &mpi_coredump->mde_regs[0],
+				 MDE_REGS_ADDR, MDE_REGS_CNT);
+	if (status)
+		goto err;
+
+	ql_build_coredump_seg_header(&mpi_coredump->misc_nic_seg_hdr,
+				MISC_NIC_INFO_SEG_NUM,
+				sizeof(struct mpi_coredump_segment_header)
+				+ sizeof(mpi_coredump->misc_nic_info),
+				"MISC NIC INFO");
+	mpi_coredump->misc_nic_info.rx_ring_count = qdev->rx_ring_count;
+	mpi_coredump->misc_nic_info.tx_ring_count = qdev->tx_ring_count;
+	mpi_coredump->misc_nic_info.intr_count = qdev->intr_count;
+	mpi_coredump->misc_nic_info.function = qdev->func;
+
+	/* Segment 31 */
+	/* Get indexed register values. */
+	ql_build_coredump_seg_header(&mpi_coredump->intr_states_seg_hdr,
+				INTR_STATES_SEG_NUM,
+				sizeof(struct mpi_coredump_segment_header)
+				+ sizeof(mpi_coredump->intr_states),
+				"INTR States");
+	ql_get_intr_states(qdev, &mpi_coredump->intr_states[0]);
+
+	ql_build_coredump_seg_header(&mpi_coredump->cam_entries_seg_hdr,
+				CAM_ENTRIES_SEG_NUM,
+				sizeof(struct mpi_coredump_segment_header)
+				+ sizeof(mpi_coredump->cam_entries),
+				"CAM Entries");
+	status = ql_get_cam_entries(qdev, &mpi_coredump->cam_entries[0]);
+	if (status)
+		goto err;
+
+	ql_build_coredump_seg_header(&mpi_coredump->nic_routing_words_seg_hdr,
+				ROUTING_WORDS_SEG_NUM,
+				sizeof(struct mpi_coredump_segment_header)
+				+ sizeof(mpi_coredump->nic_routing_words),
+				"Routing Words");
+	status = ql_get_routing_entries(qdev,
+			 &mpi_coredump->nic_routing_words[0]);
+	if (status)
+		goto err;
+
+	/* Segment 34 (Rev C. step 23) */
+	ql_build_coredump_seg_header(&mpi_coredump->ets_seg_hdr,
+				ETS_SEG_NUM,
+				sizeof(struct mpi_coredump_segment_header)
+				+ sizeof(mpi_coredump->ets),
+				"ETS Registers");
+	status = ql_get_ets_regs(qdev, &mpi_coredump->ets[0]);
+	if (status)
+		goto err;
+
+	ql_build_coredump_seg_header(&mpi_coredump->routing_reg_seg_hdr,
+				ROUTING_INDEX_SEG_NUM,
+				sizeof(struct mpi_coredump_segment_header)
+				+ sizeof(mpi_coredump->routing_regs),
+				"Routing Regs");
+	status = ql_get_routing_index_registers(qdev,
+					&mpi_coredump->routing_regs[0]);
+	if (status)
+		goto err;
+
+	ql_build_coredump_seg_header(&mpi_coredump->mac_prot_reg_seg_hdr,
+				MAC_PROTOCOL_SEG_NUM,
+				sizeof(struct mpi_coredump_segment_header)
+				+ sizeof(mpi_coredump->mac_prot_regs),
+				"MAC Prot Regs");
+	ql_get_mac_protocol_registers(qdev, &mpi_coredump->mac_prot_regs[0]);
+
+	/* Get the semaphore registers for all 5 functions */
+	ql_build_coredump_seg_header(&mpi_coredump->sem_regs_seg_hdr,
+			SEM_REGS_SEG_NUM,
+			sizeof(struct mpi_coredump_segment_header) +
+			sizeof(mpi_coredump->sem_regs),	"Sem Registers");
+
+	ql_get_sem_registers(qdev, &mpi_coredump->sem_regs[0]);
+
+	/* Prevent the mpi restarting while we dump the memory.*/
+	ql_write_mpi_reg(qdev, MPI_TEST_FUNC_RST_STS, MPI_TEST_FUNC_RST_FRC);
+
+	/* clear the pause */
+	status = ql_unpause_mpi_risc(qdev);
+	if (status) {
+		QPRINTK(qdev, DRV, ERR,
+			"Failed RISC unpause. Status = 0x%.08x\n", status);
+		goto err;
+	}
+err:
+	ql_sem_unlock(qdev, SEM_PROC_REG_MASK); /* does flush too */
+	return status;
+
+}
+
 void ql_gen_reg_dump(struct ql_adapter *qdev,
 			struct ql_reg_dump *mpi_coredump)
 {
@@ -180,6 +676,33 @@ void ql_gen_reg_dump(struct ql_adapter *qdev,
 		return;
 }
 
+/* Coredump to messages log file using separate worker thread */
+void ql_mpi_core_to_log(struct work_struct *work)
+{
+	struct ql_adapter *qdev =
+		container_of(work, struct ql_adapter, mpi_core_to_log.work);
+	u32 *tmp, count;
+	int i;
+
+	count = sizeof(struct ql_mpi_coredump) / sizeof(u32);
+	tmp = (u32 *)qdev->mpi_coredump;
+	QPRINTK(qdev, DRV, DEBUG, "Core is dumping to log file!\n");
+
+	for (i = 0; i < count; i += 8) {
+		printk(KERN_ERR "%.08x: %.08x %.08x %.08x %.08x %.08x "
+			"%.08x %.08x %.08x \n", i,
+			tmp[i + 0],
+			tmp[i + 1],
+			tmp[i + 2],
+			tmp[i + 3],
+			tmp[i + 4],
+			tmp[i + 5],
+			tmp[i + 6],
+			tmp[i + 7]);
+		msleep(5);
+	}
+}
+
 #ifdef QL_REG_DUMP
 static void ql_dump_intr_states(struct ql_adapter *qdev)
 {