Date:	Thu, 23 Aug 2012 21:07:12 -0400
From:	Sony Chacko <sony.chacko@...gic.com>
To:	davem@...emloft.net
Cc:	netdev@...r.kernel.org, Dept_NX_Linux_NIC_Driver@...gic.com,
	Sony Chacko <sony.chacko@...gic.com>
Subject: [PATCH net-next 08/15] qlcnic: register dump utility

From: Sony Chacko <sony.chacko@...gic.com>

Modify 82xx driver to support new adapter - Qlogic 83XX CNA
Common register dump utility for 82xx and 83xx adapters

Signed-off-by: Rajesh Borundia <rajesh.borundia@...gic.com>
Signed-off-by: Manish chopra <manish.chopra@...gic.com>
Signed-off-by: Sony Chacko <sony.chacko@...gic.com>
---
 drivers/net/ethernet/qlogic/qlcnic/Makefile        |    2 +-
 drivers/net/ethernet/qlogic/qlcnic/qlcnic.h        |    2 +
 drivers/net/ethernet/qlogic/qlcnic/qlcnic_main.c   |    9 +
 .../net/ethernet/qlogic/qlcnic/qlcnic_minidump.c   |  860 ++++++++++++++++++++
 4 files changed, 872 insertions(+), 1 deletions(-)
 create mode 100644 drivers/net/ethernet/qlogic/qlcnic/qlcnic_minidump.c

diff --git a/drivers/net/ethernet/qlogic/qlcnic/Makefile b/drivers/net/ethernet/qlogic/qlcnic/Makefile
index 2968c57..f87d98f 100644
--- a/drivers/net/ethernet/qlogic/qlcnic/Makefile
+++ b/drivers/net/ethernet/qlogic/qlcnic/Makefile
@@ -6,4 +6,4 @@ obj-$(CONFIG_QLCNIC) := qlcnic.o
 
 qlcnic-y := qlcnic_hw.o qlcnic_main.o qlcnic_init.o \
 	qlcnic_ethtool.o qlcnic_ctx.o qlcnic_io.o \
-	qlcnic_sysfs.o qlcnic_83xx_hw.o
+	qlcnic_sysfs.o qlcnic_83xx_hw.o qlcnic_minidump.o
diff --git a/drivers/net/ethernet/qlogic/qlcnic/qlcnic.h b/drivers/net/ethernet/qlogic/qlcnic/qlcnic.h
index 3886e17..9e46670 100644
--- a/drivers/net/ethernet/qlogic/qlcnic/qlcnic.h
+++ b/drivers/net/ethernet/qlogic/qlcnic/qlcnic.h
@@ -1465,6 +1465,7 @@ struct qlcnic_cmd_args {
 	struct _cdrp_cmd rsp;
 };
 
+int qlcnic_fw_cmd_get_minidump_temp(struct qlcnic_adapter *adapter);
 int qlcnic_fw_cmd_set_port(struct qlcnic_adapter *adapter, u32 config);
 
 u32 qlcnic_hw_read_wx_2M(struct qlcnic_adapter *adapter, ulong off, int *);
@@ -1518,6 +1519,7 @@ int qlcnic_wol_supported(struct qlcnic_adapter *);
 int qlcnic_config_led(struct qlcnic_adapter *, u32, u32);
 void qlcnic_prune_lb_filters(struct qlcnic_adapter *);
 void qlcnic_delete_lb_filters(struct qlcnic_adapter *);
+int qlcnic_dump_fw(struct qlcnic_adapter *);
 void qlcnic_get_ocm_win(struct qlcnic_hardware_context *);
 void qlcnic_get_func_no(struct qlcnic_adapter *);
 int qlcnic_api_lock(struct qlcnic_adapter *);
diff --git a/drivers/net/ethernet/qlogic/qlcnic/qlcnic_main.c b/drivers/net/ethernet/qlogic/qlcnic/qlcnic_main.c
index fa7f3e5..9304e71 100644
--- a/drivers/net/ethernet/qlogic/qlcnic/qlcnic_main.c
+++ b/drivers/net/ethernet/qlogic/qlcnic/qlcnic_main.c
@@ -839,6 +839,9 @@ qlcnic_check_options(struct qlcnic_adapter *adapter)
 				adapter->fw_version > prev_fw_version) {
 			if (fw_dump->tmpl_hdr)
 				vfree(fw_dump->tmpl_hdr);
+			if (!qlcnic_fw_cmd_get_minidump_temp(adapter))
+				dev_info(&pdev->dev,
+					"Supports FW dump capability\n");
 		}
 	}
 
@@ -2540,6 +2543,12 @@ skip_ack_check:
 		}
 
 		ahw->hw_ops->api_unlock(adapter);
+		rtnl_lock();
+		if (adapter->flags & QLCNIC_FW_RESET_OWNER) {
+			qlcnic_dump_fw(adapter);
+			adapter->flags |= QLCNIC_FW_HANG;
+		}
+		rtnl_unlock();
 
 		adapter->flags &= ~QLCNIC_FW_RESET_OWNER;
 		if (!adapter->nic_ops->start_firmware(adapter)) {
diff --git a/drivers/net/ethernet/qlogic/qlcnic/qlcnic_minidump.c b/drivers/net/ethernet/qlogic/qlcnic/qlcnic_minidump.c
new file mode 100644
index 0000000..c1d5a6a
--- /dev/null
+++ b/drivers/net/ethernet/qlogic/qlcnic/qlcnic_minidump.c
@@ -0,0 +1,860 @@
+
+#include "qlcnic.h"
+#include "qlcnic_hdr.h"
+#include "qlcnic_83xx_hw.h"
+#include "qlcnic_hw.h"
+
+#include <net/ip.h>
+
+#define QLC_83XX_MINIDUMP_FLASH			0x520000
+#define QLC_83XX_OCM_INDEX			3
+#define QLC_83XX_PCI_INDEX			0
+
+static u32
+qlcnic_dump_crb(struct qlcnic_adapter *adapter, struct qlcnic_dump_entry *entry,
+		u32 *buffer)
+{
+	int i;
+	u32 addr, data;
+	struct __crb *crb = &entry->region.crb;
+
+	addr = crb->addr;
+
+	for (i = 0; i < crb->no_ops; i++) {
+		data = qlcnic_ind_rd(adapter, addr);
+		*buffer++ = cpu_to_le32(addr);
+		*buffer++ = cpu_to_le32(data);
+		addr += crb->stride;
+	}
+	return crb->no_ops * 2 * sizeof(u32);
+}
+
+static u32
+qlcnic_dump_ctrl(struct qlcnic_adapter *adapter,
+	struct qlcnic_dump_entry *entry, u32 *buffer)
+{
+	int i, k, timeout = 0;
+	u32 addr, data;
+	u8 opcode, no_ops;
+	struct __ctrl *ctr = &entry->region.ctrl;
+	struct qlcnic_dump_template_hdr *t_hdr = adapter->ahw->fw_dump.tmpl_hdr;
+
+	addr = ctr->addr;
+	no_ops = ctr->no_ops;
+
+	for (i = 0; i < no_ops; i++) {
+		k = 0;
+		opcode = 0;
+		for (k = 0; k < 8; k++) {
+			if (!(ctr->opcode & (1 << k)))
+				continue;
+			switch (1 << k) {
+			case QLCNIC_DUMP_WCRB:
+				qlcnic_ind_wr(adapter, addr, ctr->val1);
+				break;
+			case QLCNIC_DUMP_RWCRB:
+				data = qlcnic_ind_rd(adapter, addr);
+				qlcnic_ind_wr(adapter, addr, data);
+				break;
+			case QLCNIC_DUMP_ANDCRB:
+				data = qlcnic_ind_rd(adapter, addr);
+				qlcnic_ind_wr(adapter, addr,
+						(data & ctr->val2));
+				break;
+			case QLCNIC_DUMP_ORCRB:
+				data = qlcnic_ind_rd(adapter, addr);
+				qlcnic_ind_wr(adapter, addr,
+						(data | ctr->val3));
+				break;
+			case QLCNIC_DUMP_POLLCRB:
+				while (timeout <= ctr->timeout) {
+					data = qlcnic_ind_rd(adapter, addr);
+					if ((data & ctr->val2) == ctr->val1)
+						break;
+					usleep_range(1000, 2000);
+					timeout++;
+				}
+				if (timeout > ctr->timeout) {
+					dev_info(&adapter->pdev->dev,
+					"Timed out, aborting poll CRB\n");
+					return 0;
+				}
+				break;
+			case QLCNIC_DUMP_RD_SAVE:
+				if (ctr->index_a)
+					addr = t_hdr->saved_state[ctr->index_a];
+				data = qlcnic_ind_rd(adapter, addr);
+				t_hdr->saved_state[ctr->index_v] = data;
+				break;
+			case QLCNIC_DUMP_WRT_SAVED:
+				if (ctr->index_v)
+					data = t_hdr->saved_state[ctr->index_v];
+				else
+					data = ctr->val1;
+				if (ctr->index_a)
+					addr = t_hdr->saved_state[ctr->index_a];
+				qlcnic_ind_wr(adapter, addr, data);
+				break;
+			case QLCNIC_DUMP_MOD_SAVE_ST:
+				data = t_hdr->saved_state[ctr->index_v];
+				data <<= ctr->shl_val;
+				data >>= ctr->shr_val;
+				if (ctr->val2)
+					data &= ctr->val2;
+				data |= ctr->val3;
+				data += ctr->val1;
+				t_hdr->saved_state[ctr->index_v] = data;
+				break;
+			default:
+				dev_info(&adapter->pdev->dev,
+					"Unknown opcode\n");
+				break;
+			}
+		}
+		addr += ctr->stride;
+	}
+	return 0;
+}
+
+static u32
+qlcnic_dump_mux(struct qlcnic_adapter *adapter, struct qlcnic_dump_entry *entry,
+	u32 *buffer)
+{
+	int loop;
+	u32 val, data = 0;
+	struct __mux *mux = &entry->region.mux;
+
+	val = mux->val;
+	for (loop = 0; loop < mux->no_ops; loop++) {
+		qlcnic_ind_wr(adapter, mux->addr, val);
+		data = qlcnic_ind_rd(adapter, mux->read_addr);
+		*buffer++ = cpu_to_le32(val);
+		*buffer++ = cpu_to_le32(data);
+		val += mux->val_stride;
+	}
+	return 2 * mux->no_ops * sizeof(u32);
+}
+
+static u32
+qlcnic_dump_que(struct qlcnic_adapter *adapter, struct qlcnic_dump_entry *entry,
+	u32 *buffer)
+{
+	int i, loop;
+	u32 cnt, addr, data, que_id = 0;
+	struct __queue *que = &entry->region.que;
+
+	addr = que->read_addr;
+	cnt = que->read_addr_cnt;
+
+	for (loop = 0; loop < que->no_ops; loop++) {
+		qlcnic_ind_wr(adapter, que->sel_addr, que_id);
+		addr = que->read_addr;
+		for (i = 0; i < cnt; i++) {
+			data = qlcnic_ind_rd(adapter, addr);
+			*buffer++ = cpu_to_le32(data);
+			addr += que->read_addr_stride;
+		}
+		que_id += que->stride;
+	}
+	return que->no_ops * cnt * sizeof(u32);
+}
+
+static u32
+qlcnic_dump_ocm(struct qlcnic_adapter *adapter, struct qlcnic_dump_entry *entry,
+	u32 *buffer)
+{
+	int i;
+	u32 data;
+	void __iomem *addr;
+	struct __ocm *ocm = &entry->region.ocm;
+
+	addr = adapter->ahw->pci_base0 + ocm->read_addr;
+	for (i = 0; i < ocm->no_ops; i++) {
+		data = readl(addr);
+		*buffer++ = cpu_to_le32(data);
+		addr += ocm->read_addr_stride;
+	}
+	return ocm->no_ops * sizeof(u32);
+}
+
+static u32
+qlcnic_read_rom(struct qlcnic_adapter *adapter, struct qlcnic_dump_entry *entry,
+	u32 *buffer)
+{
+	int i, count = 0;
+	u32 fl_addr, size, val, lck_val, addr;
+	struct __mem *rom = &entry->region.mem;
+
+	fl_addr = rom->addr;
+	size = rom->size/4;
+lock_try:
+	lck_val = QLCRD(adapter, QLCNIC_FLASH_LOCK);
+	if (!lck_val && count < MAX_CTL_CHECK) {
+		usleep_range(10000, 11000);
+		count++;
+		goto lock_try;
+	}
+	QLCWR(adapter, QLCNIC_FLASH_LOCK_OWNER, adapter->ahw->pci_func);
+	for (i = 0; i < size; i++) {
+		addr = fl_addr & 0xFFFF0000;
+		qlcnic_ind_wr(adapter, FLASH_ROM_WINDOW, addr);
+		addr = LSW(fl_addr) + FLASH_ROM_DATA;
+		val = qlcnic_ind_rd(adapter, addr);
+		fl_addr += 4;
+		*buffer++ = cpu_to_le32(val);
+	}
+	QLCRD(adapter, QLCNIC_FLASH_UNLOCK);
+	return rom->size;
+}
+
+static u32
+qlcnic_dump_l1_cache(struct qlcnic_adapter *adapter,
+	struct qlcnic_dump_entry *entry, u32 *buffer)
+{
+	int i;
+	u32 cnt, val, data, addr;
+	struct __cache *l1 = &entry->region.cache;
+
+	val = l1->init_tag_val;
+
+	for (i = 0; i < l1->no_ops; i++) {
+		qlcnic_ind_wr(adapter, l1->addr, val);
+		qlcnic_ind_wr(adapter, l1->ctrl_addr, LSW(l1->ctrl_val));
+		addr = l1->read_addr;
+		cnt = l1->read_addr_num;
+		while (cnt) {
+			data = qlcnic_ind_rd(adapter, addr);
+			*buffer++ = cpu_to_le32(data);
+			addr += l1->read_addr_stride;
+			cnt--;
+		}
+		val += l1->stride;
+	}
+	return l1->no_ops * l1->read_addr_num * sizeof(u32);
+}
+
+static u32
+qlcnic_dump_l2_cache(struct qlcnic_adapter *adapter,
+	struct qlcnic_dump_entry *entry, u32 *buffer)
+{
+	int i;
+	u32 cnt, val, data, addr;
+	u8 poll_mask, poll_to, time_out = 0;
+	struct __cache *l2 = &entry->region.cache;
+
+	val = l2->init_tag_val;
+	poll_mask = LSB(MSW(l2->ctrl_val));
+	poll_to = MSB(MSW(l2->ctrl_val));
+
+	for (i = 0; i < l2->no_ops; i++) {
+		qlcnic_ind_wr(adapter, l2->addr, val);
+		if (LSW(l2->ctrl_val))
+			qlcnic_ind_wr(adapter, l2->ctrl_addr,
+						LSW(l2->ctrl_val));
+		if (!poll_mask)
+			goto skip_poll;
+		do {
+			data = qlcnic_ind_rd(adapter, l2->ctrl_addr);
+			if (!(data & poll_mask))
+				break;
+			usleep_range(1000, 2000);
+			time_out++;
+		} while (time_out <= poll_to);
+
+		if (time_out > poll_to) {
+			dev_err(&adapter->pdev->dev,
+				"Timeout exceeded in %s, aborting dump\n",
+				__func__);
+			return 0;
+		}
+skip_poll:
+		addr = l2->read_addr;
+		cnt = l2->read_addr_num;
+		while (cnt) {
+			data = qlcnic_ind_rd(adapter, addr);
+			*buffer++ = cpu_to_le32(data);
+			addr += l2->read_addr_stride;
+			cnt--;
+		}
+		val += l2->stride;
+	}
+	return l2->no_ops * l2->read_addr_num * sizeof(u32);
+}
+
+static u32
+qlcnic_read_memory(struct qlcnic_adapter *adapter,
+	struct qlcnic_dump_entry *entry, u32 *buffer)
+{
+	u32 addr, data, test, ret = 0;
+	int i, reg_read;
+	struct __mem *mem = &entry->region.mem;
+
+	reg_read = mem->size;
+	addr = mem->addr;
+	/* check for data size of multiple of 16 and 16 byte alignment */
+	if ((addr & 0xf) || (reg_read%16)) {
+		dev_info(&adapter->pdev->dev,
+			"Unaligned memory addr:0x%x size:0x%x\n",
+			addr, reg_read);
+		return 0;
+	}
+
+	mutex_lock(&adapter->ahw->mem_lock);
+
+	while (reg_read != 0) {
+		qlcnic_ind_wr(adapter, QLCNIC_MS_ADDR_LO, addr);
+		qlcnic_ind_wr(adapter, QLCNIC_MS_ADDR_HI, 0);
+		qlcnic_ind_wr(adapter, QLCNIC_MS_CTRL, QLC_TA_START_ENABLE);
+
+		for (i = 0; i < MAX_CTL_CHECK; i++) {
+			test = qlcnic_ind_rd(adapter, QLCNIC_MS_CTRL);
+			if (!(test & TA_CTL_BUSY))
+				break;
+		}
+		if (i == MAX_CTL_CHECK) {
+			printk_ratelimited(KERN_WARNING
+				"failed to read through agent\n");
+			ret = 0;
+			goto out;
+		}
+		for (i = 0; i < 4; i++) {
+			data = qlcnic_ind_rd(adapter, QLCNIC_MS_READ_DATA[i]);
+			*buffer++ = cpu_to_le32(data);
+		}
+		addr += 16;
+		reg_read -= 16;
+		ret += 16;
+	}
+out:
+	mutex_unlock(&adapter->ahw->mem_lock);
+	return mem->size;
+}
+
+static u32
+qlcnic_dump_nop(struct qlcnic_adapter *adapter,
+	struct qlcnic_dump_entry *entry, u32 *buffer)
+{
+	entry->hdr.flags |= QLCNIC_DUMP_SKIP;
+	return 0;
+}
+
+static int
+qlcnic_valid_dump_entry(struct device *dev, struct qlcnic_dump_entry *entry,
+	u32 size)
+{
+	int ret = 1;
+	if (size != entry->hdr.cap_size) {
+		dev_info(dev,
+		"Invalid entry, Type:%d\tMask:%d\tSize:%dCap_size:%d\n",
+		entry->hdr.type, entry->hdr.mask, size, entry->hdr.cap_size);
+		ret = 0;
+	}
+	return ret;
+}
+
+static u32
+qlcnic_read_pollrdmwr(struct qlcnic_adapter *adapter,
+	struct qlcnic_dump_entry *entry, u32 *buffer)
+{
+	struct __pollrdmwr *poll = &entry->region.pollrdmwr;
+	u32 data, wait_count, poll_wait, temp;
+
+	poll_wait = poll->poll_wait;
+
+	qlcnic_ind_wr(adapter, poll->addr1, poll->val1);
+	wait_count = 0;
+
+	while (wait_count < poll_wait) {
+		data = qlcnic_ind_rd(adapter, poll->addr1);
+		if ((data & poll->poll_mask) != 0)
+			break;
+		wait_count++;
+	}
+
+	if (wait_count == poll_wait) {
+		dev_err(&adapter->pdev->dev,
+			"Timeout exceeded in %s, aborting dump\n",
+			__func__);
+		return 0;
+	}
+
+	data = qlcnic_ind_rd(adapter, poll->addr2) & poll->mod_mask;
+	qlcnic_ind_wr(adapter, poll->addr2, data);
+	qlcnic_ind_wr(adapter, poll->addr1, poll->val2);
+	wait_count = 0;
+
+	while (wait_count < poll_wait) {
+		temp = qlcnic_ind_rd(adapter, poll->addr1);
+		if ((temp & poll->poll_mask) != 0)
+			break;
+		wait_count++;
+	}
+
+	*buffer++ = cpu_to_le32(poll->addr2);
+	*buffer++ = cpu_to_le32(data);
+
+	return 2 * sizeof(u32);
+
+}
+
+static u32
+qlcnic_read_pollrd(struct qlcnic_adapter *adapter,
+	struct qlcnic_dump_entry *entry, u32 *buffer)
+{
+	struct __pollrd *pollrd = &entry->region.pollrd;
+	u32 data, wait_count, poll_wait, sel_val;
+	int i;
+
+	poll_wait = pollrd->poll_wait;
+	sel_val = pollrd->sel_val;
+
+	for (i = 0; i < pollrd->no_ops; i++)  {
+		qlcnic_ind_wr(adapter, pollrd->sel_addr, sel_val);
+		wait_count = 0;
+		while (wait_count < poll_wait) {
+			data = qlcnic_ind_rd(adapter, pollrd->sel_addr);
+			if ((data & pollrd->poll_mask) != 0)
+				break;
+			wait_count++;
+		}
+
+		if (wait_count == poll_wait) {
+			dev_err(&adapter->pdev->dev,
+				"Timeout exceeded in %s, aborting dump\n",
+				__func__);
+			return 0;
+		}
+
+		data = qlcnic_ind_rd(adapter, pollrd->read_addr);
+		*buffer++ = cpu_to_le32(sel_val);
+		*buffer++ = cpu_to_le32(data);
+		sel_val += pollrd->sel_val_stride;
+	}
+	return pollrd->no_ops * (2 * sizeof(u32));
+}
+
+static u32
+qlcnic_read_mux2(struct qlcnic_adapter *adapter,
+	struct qlcnic_dump_entry *entry, u32 *buffer)
+{
+	struct __mux2 *mux2 = &entry->region.mux2;
+	u32 data;
+	u32 t_sel_val, sel_val1, sel_val2;
+	int i;
+
+	sel_val1 = mux2->sel_val1;
+	sel_val2 = mux2->sel_val2;
+
+	for (i = 0; i < mux2->no_ops; i++)  {
+		qlcnic_ind_wr(adapter, mux2->sel_addr1, sel_val1);
+		t_sel_val = sel_val1 & mux2->sel_val_mask;
+		qlcnic_ind_wr(adapter, mux2->sel_addr2, t_sel_val);
+		data = qlcnic_ind_rd(adapter, mux2->read_addr);
+		*buffer++ = cpu_to_le32(t_sel_val);
+		*buffer++ = cpu_to_le32(data);
+		qlcnic_ind_wr(adapter, mux2->sel_addr1, sel_val2);
+		t_sel_val = sel_val2 & mux2->sel_val_mask;
+		qlcnic_ind_wr(adapter, mux2->sel_addr2, t_sel_val);
+		data = qlcnic_ind_rd(adapter, mux2->read_addr);
+		*buffer++ = cpu_to_le32(t_sel_val);
+		*buffer++ = cpu_to_le32(data);
+		sel_val1 += mux2->sel_val_stride;
+		sel_val2 += mux2->sel_val_stride;
+	}
+
+	return mux2->no_ops * (4 * sizeof(u32));
+}
+
+static u32
+qlcnic_83xx_dump_rom(struct qlcnic_adapter *adapter,
+	struct qlcnic_dump_entry *entry, u32 *buffer)
+{
+	u32 fl_addr, size;
+	struct __mem *rom = &entry->region.mem;
+
+	fl_addr = rom->addr;
+	size = rom->size/4;
+
+	if (!qlcnic_83xx_lockless_flash_read_u32(adapter,
+					fl_addr, (u8 *)buffer, size))
+		return rom->size;
+
+	return 0;
+}
+
+static const struct qlcnic_dump_operations qlcnic_fw_dump_ops[] = {
+	{ QLCNIC_DUMP_NOP, qlcnic_dump_nop },
+	{ QLCNIC_DUMP_READ_CRB, qlcnic_dump_crb },
+	{ QLCNIC_DUMP_READ_MUX, qlcnic_dump_mux },
+	{ QLCNIC_DUMP_QUEUE, qlcnic_dump_que },
+	{ QLCNIC_DUMP_BRD_CONFIG, qlcnic_read_rom },
+	{ QLCNIC_DUMP_READ_OCM, qlcnic_dump_ocm },
+	{ QLCNIC_DUMP_PEG_REG, qlcnic_dump_ctrl },
+	{ QLCNIC_DUMP_L1_DTAG, qlcnic_dump_l1_cache },
+	{ QLCNIC_DUMP_L1_ITAG, qlcnic_dump_l1_cache },
+	{ QLCNIC_DUMP_L1_DATA, qlcnic_dump_l1_cache },
+	{ QLCNIC_DUMP_L1_INST, qlcnic_dump_l1_cache },
+	{ QLCNIC_DUMP_L2_DTAG, qlcnic_dump_l2_cache },
+	{ QLCNIC_DUMP_L2_ITAG, qlcnic_dump_l2_cache },
+	{ QLCNIC_DUMP_L2_DATA, qlcnic_dump_l2_cache },
+	{ QLCNIC_DUMP_L2_INST, qlcnic_dump_l2_cache },
+	{ QLCNIC_DUMP_READ_ROM, qlcnic_read_rom },
+	{ QLCNIC_DUMP_READ_MEM, qlcnic_read_memory },
+	{ QLCNIC_DUMP_READ_CTRL, qlcnic_dump_ctrl },
+	{ QLCNIC_DUMP_TLHDR, qlcnic_dump_nop },
+	{ QLCNIC_DUMP_RDEND, qlcnic_dump_nop },
+};
+
+static const struct qlcnic_dump_operations qlcnic_83xx_fw_dump_ops[] = {
+	{ QLCNIC_DUMP_NOP, qlcnic_dump_nop },
+	{ QLCNIC_DUMP_READ_CRB, qlcnic_dump_crb },
+	{ QLCNIC_DUMP_READ_MUX, qlcnic_dump_mux },
+	{ QLCNIC_DUMP_QUEUE, qlcnic_dump_que },
+	{ QLCNIC_DUMP_BRD_CONFIG, qlcnic_83xx_dump_rom },
+	{ QLCNIC_DUMP_READ_OCM, qlcnic_dump_ocm },
+	{ QLCNIC_DUMP_PEG_REG, qlcnic_dump_ctrl },
+	{ QLCNIC_DUMP_L1_DTAG, qlcnic_dump_l1_cache },
+	{ QLCNIC_DUMP_L1_ITAG, qlcnic_dump_l1_cache },
+	{ QLCNIC_DUMP_L1_DATA, qlcnic_dump_l1_cache },
+	{ QLCNIC_DUMP_L1_INST, qlcnic_dump_l1_cache },
+	{ QLCNIC_DUMP_L2_DTAG, qlcnic_dump_l2_cache },
+	{ QLCNIC_DUMP_L2_ITAG, qlcnic_dump_l2_cache },
+	{ QLCNIC_DUMP_L2_DATA, qlcnic_dump_l2_cache },
+	{ QLCNIC_DUMP_L2_INST, qlcnic_dump_l2_cache },
+	{ QLCNIC_DUMP_POLL_RD, qlcnic_read_pollrd },
+	{ QLCNIC_READ_MUX2, qlcnic_read_mux2 },
+	{ QLCNIC_READ_POLLRDMWR, qlcnic_read_pollrdmwr },
+	{ QLCNIC_DUMP_READ_ROM, qlcnic_83xx_dump_rom },
+	{ QLCNIC_DUMP_READ_MEM, qlcnic_read_memory },
+	{ QLCNIC_DUMP_READ_CTRL, qlcnic_dump_ctrl },
+	{ QLCNIC_DUMP_TLHDR, qlcnic_dump_nop },
+	{ QLCNIC_DUMP_RDEND, qlcnic_dump_nop },
+};
+
+static uint32_t qlcnic_temp_checksum(uint32_t *temp_buffer, u32 temp_size)
+{
+	uint64_t sum = 0;
+	int count = temp_size / sizeof(uint32_t);
+	while (count-- > 0)
+		sum += *temp_buffer++;
+	while (sum >> 32)
+		sum = (sum & 0xFFFFFFFF) + (sum >> 32);
+	return ~sum;
+}
+
+static int
+qlcnic_fw_flash_get_minidump_temp(struct qlcnic_adapter *adapter,
+					u8 *buffer, u32 size)
+{
+	int ret = 0;
+
+	if (QLCNIC_IS_82XX(adapter))
+		return -EIO;
+
+	if (qlcnic_83xx_lock_flash(adapter))
+		return -EIO;
+
+	ret = qlcnic_83xx_lockless_flash_read_u32(adapter,
+			QLC_83XX_MINIDUMP_FLASH, buffer, size/sizeof(u32));
+
+	qlcnic_83xx_unlock_flash(adapter);
+
+	return ret;
+}
+
+static int
+qlcnic_fw_flash_get_minidump_temp_size(struct qlcnic_adapter *adapter,
+				struct qlcnic_cmd_args *cmd)
+{
+	struct qlcnic_dump_template_hdr tmp_hdr;
+	u32 size = sizeof(struct qlcnic_dump_template_hdr) / sizeof(u32);
+	int ret = 0;
+
+	if (QLCNIC_IS_82XX(adapter))
+		return -EIO;
+
+	if (qlcnic_83xx_lock_flash(adapter))
+		return -EIO;
+
+	ret = qlcnic_83xx_lockless_flash_read_u32(adapter,
+			QLC_83XX_MINIDUMP_FLASH, (u8 *)&tmp_hdr, size);
+
+	qlcnic_83xx_unlock_flash(adapter);
+
+	cmd->rsp.arg[2] = tmp_hdr.size;
+	cmd->rsp.arg[3] = tmp_hdr.version;
+
+	return ret;
+}
+
+static int
+qlcnic_fw_get_minidump_temp_size(struct qlcnic_adapter *adapter,
+		u32 *version, u32 *temp_size, u8 *use_flash_temp)
+{
+	int err = 0;
+	struct qlcnic_cmd_args cmd;
+	struct qlcnic_hardware_context *ahw;
+
+	ahw = adapter->ahw;
+	if (adapter->ahw->hw_ops->alloc_mbx_args(&cmd, adapter,
+						QLCNIC_CMD_TEMP_SIZE))
+		return -ENOMEM;
+
+	err = ahw->hw_ops->mbx_cmd(adapter, &cmd);
+	if (err != QLCNIC_RCODE_SUCCESS) {
+		if (qlcnic_fw_flash_get_minidump_temp_size(adapter, &cmd)) {
+			qlcnic_free_mbx_args(&cmd);
+			return -EIO;
+		}
+		*use_flash_temp = 1;
+	}
+
+	*temp_size = cmd.rsp.arg[2];
+	*version = cmd.rsp.arg[3];
+	qlcnic_free_mbx_args(&cmd);
+
+	if (!(*temp_size))
+		return -EIO;
+
+	return 0;
+}
+
+static
+int __qlcnic_fw_cmd_get_minidump_temp(struct qlcnic_adapter *adapter,
+				u32 *buffer, u32 temp_size)
+{
+	int err = 0, i;
+	void *tmp_addr;
+	u32 *tmp_buf;
+	struct qlcnic_cmd_args cmd;
+	dma_addr_t tmp_addr_t = 0;
+
+	tmp_addr = dma_alloc_coherent(&adapter->pdev->dev, temp_size,
+			&tmp_addr_t, GFP_KERNEL);
+	if (!tmp_addr) {
+		dev_err(&adapter->pdev->dev,
+			"Can't get memory for FW dump template\n");
+		return -ENOMEM;
+	}
+
+	if (adapter->ahw->hw_ops->alloc_mbx_args(&cmd, adapter,
+					QLCNIC_CMD_GET_TEMP_HDR)) {
+		err = -ENOMEM;
+		goto free_mem;
+	}
+
+	cmd.req.arg[1] = LSD(tmp_addr_t);
+	cmd.req.arg[2] = MSD(tmp_addr_t);
+	cmd.req.arg[3] = temp_size;
+	err = adapter->ahw->hw_ops->mbx_cmd(adapter, &cmd);
+
+	tmp_buf = tmp_addr;
+	if (err == QLCNIC_RCODE_SUCCESS) {
+		for (i = 0; i < temp_size/sizeof(u32); i++)
+			*buffer++ = __le32_to_cpu(*tmp_buf++);
+	}
+
+	qlcnic_free_mbx_args(&cmd);
+
+free_mem:
+	dma_free_coherent(&adapter->pdev->dev, temp_size, tmp_addr, tmp_addr_t);
+
+	return err;
+}
+
+int
+qlcnic_fw_cmd_get_minidump_temp(struct qlcnic_adapter *adapter)
+{
+	int err;
+	u32 temp_size = 0;
+	u32 version, csum, *tmp_buf;
+	struct qlcnic_hardware_context *ahw;
+	struct qlcnic_dump_template_hdr *tmpl_hdr;
+	u8 use_flash_temp = 0;
+
+	ahw = adapter->ahw;
+
+	err = qlcnic_fw_get_minidump_temp_size(adapter, &version,
+					&temp_size, &use_flash_temp);
+
+	if (err) {
+		dev_info(&adapter->pdev->dev,
+			"Can't get template size %d\n", err);
+		return -EIO;
+	}
+
+	ahw->fw_dump.tmpl_hdr = vmalloc(temp_size);
+
+	if (!ahw->fw_dump.tmpl_hdr)
+		return -ENOMEM;
+
+	memset(ahw->fw_dump.tmpl_hdr, 0, temp_size);
+	tmp_buf = (u32 *)ahw->fw_dump.tmpl_hdr;
+
+	if (use_flash_temp)
+		goto flash_temp;
+
+	err = __qlcnic_fw_cmd_get_minidump_temp(adapter, tmp_buf, temp_size);
+
+	if (err) {
+flash_temp:
+		err = qlcnic_fw_flash_get_minidump_temp(adapter,
+					(u8 *)tmp_buf, temp_size);
+
+		if (err) {
+			dev_err(&adapter->pdev->dev,
+				"Failed to get minidump template header %d\n",
+									err);
+			vfree(ahw->fw_dump.tmpl_hdr);
+			ahw->fw_dump.tmpl_hdr = NULL;
+			return -EIO;
+		}
+	}
+
+	csum = qlcnic_temp_checksum((uint32_t *) tmp_buf, temp_size);
+
+	if (csum) {
+		dev_err(&adapter->pdev->dev,
+			"Template header checksum validation failed\n");
+		vfree(ahw->fw_dump.tmpl_hdr);
+		ahw->fw_dump.tmpl_hdr = NULL;
+		return -EIO;
+	}
+
+	tmpl_hdr = ahw->fw_dump.tmpl_hdr;
+	tmpl_hdr->drv_cap_mask = QLCNIC_DUMP_MASK_DEF;
+	ahw->fw_dump.enable = 1;
+
+	return 0;
+}
+
+int qlcnic_dump_fw(struct qlcnic_adapter *adapter)
+{
+	u32 *buffer;
+	char mesg[64];
+	char *msg[] = {mesg, NULL};
+	int i, k, ops_cnt, ops_index, dump_size = 0;
+	u32 entry_offset, dump, no_entries, buf_offset = 0;
+	struct qlcnic_dump_entry *entry;
+	struct qlcnic_fw_dump *fw_dump = &adapter->ahw->fw_dump;
+	struct qlcnic_dump_template_hdr *tmpl_hdr = fw_dump->tmpl_hdr;
+	static const struct qlcnic_dump_operations *fw_dump_ops;
+
+	if (!fw_dump->enable) {
+		dev_info(&adapter->pdev->dev,
+			"Dump not enabled\n");
+		return -EIO;
+	}
+
+	if (fw_dump->clr) {
+		dev_info(&adapter->pdev->dev,
+			"Previous dump not cleared, not capturing dump\n");
+		return -EIO;
+	}
+
+	QLCDB(adapter, DRV, "Take FW dump\n");
+	/* Calculate the size for dump data area only */
+	for (i = 2, k = 1; (i & QLCNIC_DUMP_MASK_MAX); i <<= 1, k++)
+		if (i & tmpl_hdr->drv_cap_mask)
+			dump_size += tmpl_hdr->cap_sizes[k];
+	if (!dump_size)
+		return -EIO;
+
+	fw_dump->data = vmalloc(dump_size);
+	if (!fw_dump->data) {
+		dev_info(&adapter->pdev->dev,
+			"Unable to allocate (%d KB) for fw dump\n",
+			dump_size/1024);
+		return -ENOMEM;
+	}
+	memset(fw_dump->data, 0, dump_size);
+	buffer = fw_dump->data;
+	fw_dump->size = dump_size;
+	no_entries = tmpl_hdr->num_entries;
+	entry_offset = tmpl_hdr->offset;
+	tmpl_hdr->sys_info[0] = QLCNIC_DRIVER_VERSION;
+	tmpl_hdr->sys_info[1] = adapter->fw_version;
+
+	if (QLCNIC_IS_82XX(adapter)) {
+		ops_cnt = ARRAY_SIZE(qlcnic_fw_dump_ops);
+		fw_dump_ops = qlcnic_fw_dump_ops;
+	} else {
+		ops_cnt = ARRAY_SIZE(qlcnic_83xx_fw_dump_ops);
+		fw_dump_ops = qlcnic_83xx_fw_dump_ops;
+		tmpl_hdr->saved_state[QLC_83XX_OCM_INDEX] =
+			tmpl_hdr->ocm_wnd_reg[adapter->ahw->pci_func];
+		tmpl_hdr->saved_state[QLC_83XX_PCI_INDEX] =
+						adapter->ahw->pci_func;
+	}
+
+	for (i = 0; i < no_entries; i++) {
+		entry = (void *)tmpl_hdr + entry_offset;
+		if (!(entry->hdr.mask & tmpl_hdr->drv_cap_mask)) {
+			entry->hdr.flags |= QLCNIC_DUMP_SKIP;
+			entry_offset += entry->hdr.offset;
+			continue;
+		}
+
+		/* Find the handler for this entry */
+		ops_index = 0;
+		while (ops_index < ops_cnt) {
+			if (entry->hdr.type == fw_dump_ops[ops_index].opcode)
+				break;
+			ops_index++;
+		}
+
+		if (ops_index == ops_cnt) {
+			dev_info(&adapter->pdev->dev,
+				"Invalid entry type %d, exiting dump\n",
+				entry->hdr.type);
+			goto error;
+		}
+
+		/* Collect dump for this entry */
+		dump = fw_dump_ops[ops_index].handler(adapter, entry, buffer);
+		if (!qlcnic_valid_dump_entry(&adapter->pdev->dev, entry, dump))
+			entry->hdr.flags |= QLCNIC_DUMP_SKIP;
+		buf_offset += entry->hdr.cap_size;
+		entry_offset += entry->hdr.offset;
+		buffer = fw_dump->data + buf_offset;
+	}
+	if (dump_size != buf_offset) {
+		dev_info(&adapter->pdev->dev,
+			"Captured(%d) and expected size(%d) do not match\n",
+			buf_offset, dump_size);
+		goto error;
+	} else {
+		fw_dump->clr = 1;
+		snprintf(mesg, sizeof(mesg), "FW_DUMP=%s",
+			adapter->netdev->name);
+		dev_info(&adapter->pdev->dev,
+			"%s: Dump data, %d bytes captured\n",
+				adapter->netdev->name, fw_dump->size);
+		/* Send a udev event to notify availability of FW dump */
+		kobject_uevent_env(&adapter->pdev->dev.kobj, KOBJ_CHANGE, msg);
+		return 0;
+	}
+error:
+	vfree(fw_dump->data);
+	return -EINVAL;
+}
+
+void
+qlcnic_83xx_get_minidump_template(struct qlcnic_adapter *adapter)
+{
+	u32 prev_version, current_version;
+	struct qlcnic_hardware_context *ahw = adapter->ahw;
+	struct qlcnic_fw_dump *fw_dump = &ahw->fw_dump;
+	struct pci_dev *pdev = adapter->pdev;
+
+	prev_version = adapter->fw_version;
+	current_version = qlcnic_83xx_get_fw_version(adapter);
+
+	if (fw_dump->tmpl_hdr == NULL || current_version > prev_version) {
+		if (fw_dump->tmpl_hdr)
+			vfree(fw_dump->tmpl_hdr);
+		if (!qlcnic_fw_cmd_get_minidump_temp(adapter))
+			dev_info(&pdev->dev,
+				"Supports FW dump capability\n");
+	}
+}
-- 
1.7.1

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