// SPDX-License-Identifier: GPL-2.0-only
/*
* QLogic qlcnic NIC Driver
* Copyright (c) 2009-2013 QLogic Corporation
*/
#include <net/ip.h>
#include "qlcnic.h"
#include "qlcnic_hdr.h"
#include "qlcnic_83xx_hw.h"
#include "qlcnic_hw.h"
#define QLC_83XX_MINIDUMP_FLASH 0x520000
#define QLC_83XX_OCM_INDEX 3
#define QLC_83XX_PCI_INDEX 0
#define QLC_83XX_DMA_ENGINE_INDEX 8
static const u32 qlcnic_ms_read_data[] = {
0x410000A8, 0x410000AC, 0x410000B8, 0x410000BC
};
#define QLCNIC_DUMP_WCRB BIT_0
#define QLCNIC_DUMP_RWCRB BIT_1
#define QLCNIC_DUMP_ANDCRB BIT_2
#define QLCNIC_DUMP_ORCRB BIT_3
#define QLCNIC_DUMP_POLLCRB BIT_4
#define QLCNIC_DUMP_RD_SAVE BIT_5
#define QLCNIC_DUMP_WRT_SAVED BIT_6
#define QLCNIC_DUMP_MOD_SAVE_ST BIT_7
#define QLCNIC_DUMP_SKIP BIT_7
#define QLCNIC_DUMP_MASK_MAX 0xff
struct qlcnic_pex_dma_descriptor {
u32 read_data_size;
u32 dma_desc_cmd;
u32 src_addr_low;
u32 src_addr_high;
u32 dma_bus_addr_low;
u32 dma_bus_addr_high;
u32 rsvd[6];
} __packed;
struct qlcnic_common_entry_hdr {
u32 type;
u32 offset;
u32 cap_size;
#if defined(__LITTLE_ENDIAN)
u8 mask;
u8 rsvd[2];
u8 flags;
#else
u8 flags;
u8 rsvd[2];
u8 mask;
#endif
} __packed;
struct __crb {
u32 addr;
#if defined(__LITTLE_ENDIAN)
u8 stride;
u8 rsvd1[3];
#else
u8 rsvd1[3];
u8 stride;
#endif
u32 data_size;
u32 no_ops;
u32 rsvd2[4];
} __packed;
struct __ctrl {
u32 addr;
#if defined(__LITTLE_ENDIAN)
u8 stride;
u8 index_a;
u16 timeout;
#else
u16 timeout;
u8 index_a;
u8 stride;
#endif
u32 data_size;
u32 no_ops;
#if defined(__LITTLE_ENDIAN)
u8 opcode;
u8 index_v;
u8 shl_val;
u8 shr_val;
#else
u8 shr_val;
u8 shl_val;
u8 index_v;
u8 opcode;
#endif
u32 val1;
u32 val2;
u32 val3;
} __packed;
struct __cache {
u32 addr;
#if defined(__LITTLE_ENDIAN)
u16 stride;
u16 init_tag_val;
#else
u16 init_tag_val;
u16 stride;
#endif
u32 size;
u32 no_ops;
u32 ctrl_addr;
u32 ctrl_val;
u32 read_addr;
#if defined(__LITTLE_ENDIAN)
u8 read_addr_stride;
u8 read_addr_num;
u8 rsvd1[2];
#else
u8 rsvd1[2];
u8 read_addr_num;
u8 read_addr_stride;
#endif
} __packed;
struct __ocm {
u8 rsvd[8];
u32 size;
u32 no_ops;
u8 rsvd1[8];
u32 read_addr;
u32 read_addr_stride;
} __packed;
struct __mem {
u32 desc_card_addr;
u32 dma_desc_cmd;
u32 start_dma_cmd;
u32 rsvd[3];
u32 addr;
u32 size;
} __packed;
struct __mux {
u32 addr;
u8 rsvd[4];
u32 size;
u32 no_ops;
u32 val;
u32 val_stride;
u32 read_addr;
u8 rsvd2[4];
} __packed;
struct __queue {
u32 sel_addr;
#if defined(__LITTLE_ENDIAN)
u16 stride;
u8 rsvd[2];
#else
u8 rsvd[2];
u16 stride;
#endif
u32 size;
u32 no_ops;
u8 rsvd2[8];
u32 read_addr;
#if defined(__LITTLE_ENDIAN)
u8 read_addr_stride;
u8 read_addr_cnt;
u8 rsvd3[2];
#else
u8 rsvd3[2];
u8 read_addr_cnt;
u8 read_addr_stride;
#endif
} __packed;
struct __pollrd {
u32 sel_addr;
u32 read_addr;
u32 sel_val;
#if defined(__LITTLE_ENDIAN)
u16 sel_val_stride;
u16 no_ops;
#else
u16 no_ops;
u16 sel_val_stride;
#endif
u32 poll_wait;
u32 poll_mask;
u32 data_size;
u8 rsvd[4];
} __packed;
struct __mux2 {
u32 sel_addr1;
u32 sel_addr2;
u32 sel_val1;
u32 sel_val2;
u32 no_ops;
u32 sel_val_mask;
u32 read_addr;
#if defined(__LITTLE_ENDIAN)
u8 sel_val_stride;
u8 data_size;
u8 rsvd[2];
#else
u8 rsvd[2];
u8 data_size;
u8 sel_val_stride;
#endif
} __packed;
struct __pollrdmwr {
u32 addr1;
u32 addr2;
u32 val1;
u32 val2;
u32 poll_wait;
u32 poll_mask;
u32 mod_mask;
u32 data_size;
} __packed;
struct qlcnic_dump_entry {
struct qlcnic_common_entry_hdr hdr;
union {
struct __crb crb;
struct __cache cache;
struct __ocm ocm;
struct __mem mem;
struct __mux mux;
struct __queue que;
struct __ctrl ctrl;
struct __pollrdmwr pollrdmwr;
struct __mux2 mux2;
struct __pollrd pollrd;
} region;
} __packed;
enum qlcnic_minidump_opcode {
QLCNIC_DUMP_NOP = 0,
QLCNIC_DUMP_READ_CRB = 1,
QLCNIC_DUMP_READ_MUX = 2,
QLCNIC_DUMP_QUEUE = 3,
QLCNIC_DUMP_BRD_CONFIG = 4,
QLCNIC_DUMP_READ_OCM = 6,
QLCNIC_DUMP_PEG_REG = 7,
QLCNIC_DUMP_L1_DTAG = 8,
QLCNIC_DUMP_L1_ITAG = 9,
QLCNIC_DUMP_L1_DATA = 11,
QLCNIC_DUMP_L1_INST = 12,
QLCNIC_DUMP_L2_DTAG = 21,
QLCNIC_DUMP_L2_ITAG = 22,
QLCNIC_DUMP_L2_DATA = 23,
QLCNIC_DUMP_L2_INST = 24,
QLCNIC_DUMP_POLL_RD = 35,
QLCNIC_READ_MUX2 = 36,
QLCNIC_READ_POLLRDMWR = 37,
QLCNIC_DUMP_READ_ROM = 71,
QLCNIC_DUMP_READ_MEM = 72,
QLCNIC_DUMP_READ_CTRL = 98,
QLCNIC_DUMP_TLHDR = 99,
QLCNIC_DUMP_RDEND = 255
};
inline u32 qlcnic_82xx_get_saved_state(void *t_hdr, u32 index)
{
struct qlcnic_82xx_dump_template_hdr *hdr = t_hdr;
return hdr->saved_state[index];
}
inline void qlcnic_82xx_set_saved_state(void *t_hdr, u32 index,
u32 value)
{
struct qlcnic_82xx_dump_template_hdr *hdr = t_hdr;
hdr->saved_state[index] = value;
}
void qlcnic_82xx_cache_tmpl_hdr_values(struct qlcnic_fw_dump *fw_dump)
{
struct qlcnic_82xx_dump_template_hdr *hdr;
hdr = fw_dump->tmpl_hdr;
fw_dump->tmpl_hdr_size = hdr->size;
fw_dump->version = hdr->version;
fw_dump->num_entries = hdr->num_entries;
fw_dump->offset = hdr->offset;
hdr->drv_cap_mask = hdr->cap_mask;
fw_dump->cap_mask = hdr->cap_mask;
fw_dump->use_pex_dma = (hdr->capabilities & BIT_0) ? true : false;
}
inline u32 qlcnic_82xx_get_cap_size(void *t_hdr, int index)
{
struct qlcnic_82xx_dump_template_hdr *hdr = t_hdr;
return hdr->cap_sizes[index];
}
void qlcnic_82xx_set_sys_info(void *t_hdr, int idx, u32 value)
{
struct qlcnic_82xx_dump_template_hdr *hdr = t_hdr;
hdr->sys_info[idx] = value;
}
void qlcnic_82xx_store_cap_mask(void *tmpl_hdr, u32 mask)
{
struct qlcnic_82xx_dump_template_hdr *hdr = tmpl_hdr;
hdr->drv_cap_mask = mask;
}
inline u32 qlcnic_83xx_get_saved_state(void *t_hdr, u32 index)
{
struct qlcnic_83xx_dump_template_hdr *hdr = t_hdr;
return hdr->saved_state[index];
}
inline void qlcnic_83xx_set_saved_state(void *t_hdr, u32 index,
u32 value)
{
struct qlcnic_83xx_dump_template_hdr *hdr = t_hdr;
hdr->saved_state[index] = value;
}
#define QLCNIC_TEMPLATE_VERSION (0x20001)
void qlcnic_83xx_cache_tmpl_hdr_values(struct qlcnic_fw_dump *fw_dump)
{
struct qlcnic_83xx_dump_template_hdr *hdr;
hdr = fw_dump->tmpl_hdr;
fw_dump->tmpl_hdr_size = hdr->size;
fw_dump->version = hdr->version;
fw_dump->num_entries = hdr->num_entries;
fw_dump->offset = hdr->offset;
hdr->drv_cap_mask = hdr->cap_mask;
fw_dump->cap_mask = hdr->cap_mask;
fw_dump->use_pex_dma = (fw_dump->version & 0xfffff) >=
QLCNIC_TEMPLATE_VERSION;
}
inline u32 qlcnic_83xx_get_cap_size(void *t_hdr, int index)
{
struct qlcnic_83xx_dump_template_hdr *hdr = t_hdr;
return hdr->cap_sizes[index];
}
void qlcnic_83xx_set_sys_info(void *t_hdr, int idx, u32 value)
{
struct qlcnic_83xx_dump_template_hdr *hdr = t_hdr;
hdr->sys_info[idx] = value;
}
void qlcnic_83xx_store_cap_mask(void *tmpl_hdr, u32 mask)
{
struct qlcnic_83xx_dump_template_hdr *hdr;
hdr = tmpl_hdr;
hdr->drv_cap_mask = mask;
}
struct qlcnic_dump_operations {
enum qlcnic_minidump_opcode opcode;
u32 (*handler)(struct qlcnic_adapter *, struct qlcnic_dump_entry *,
__le32 *);
};
static u32 qlcnic_dump_crb(struct qlcnic_adapter *adapter,
struct qlcnic_dump_entry *entry, __le32 *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, __le32 *buffer)
{
void *hdr = adapter->ahw->fw_dump.tmpl_hdr;
struct __ctrl *ctr = &entry->region.ctrl;
int i, k, timeout = 0;
u32 addr, data, temp;
u8 no_ops;
addr = ctr->addr;
no_ops = ctr->no_ops;
for (i = 0; i < no_ops; i++) {
k = 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 -EINVAL;
}
break;
case QLCNIC_DUMP_RD_SAVE:
temp = ctr->index_a;
if (temp)
addr = qlcnic_get_saved_state(adapter,
hdr,
temp);
data = qlcnic_ind_rd(adapter, addr);
qlcnic_set_saved_state(adapter, hdr,
ctr->index_v, data);
break;
case QLCNIC_DUMP_WRT_SAVED:
temp = ctr->index_v;
if (temp)
data = qlcnic_get_saved_state(adapter,
hdr,
temp);
else
data = ctr->val1;
temp = ctr->index_a;
if (temp)
addr = qlcnic_get_saved_state(adapter,
hdr,
temp);
qlcnic_ind_wr(adapter, addr, data);
break;
case QLCNIC_DUMP_MOD_SAVE_ST:
data = qlcnic_get_saved_state(adapter, hdr,
ctr->index_v);
data <<= ctr->shl_val;
data >>= ctr->shr_val;
if (ctr->val2)
data &= ctr->val2;
data |= ctr->val3;
data += ctr->val1;
qlcnic_set_saved_state(adapter, hdr,
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, __le32 *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, __le32 *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, __le32 *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, __le32 *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 = QLC_SHARED_REG_RD32(adapter, QLCNIC_FLASH_LOCK);
if (!lck_val && count < MAX_CTL_CHECK) {
usleep_range(10000, 11000);
count++;
goto lock_try;
}
QLC_SHARED_REG_WR32(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);
}
QLC_SHARED_REG_RD32(adapter, QLCNIC_FLASH_UNLOCK);
return rom->size;
}
static u32 qlcnic_dump_l1_cache(struct qlcnic_adapter *adapter,
struct qlcnic_dump_entry *entry, __le32 *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, __le32 *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 -EINVAL;
}
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_test_agent(struct qlcnic_adapter *adapter,
struct __mem *mem, __le32 *buffer,
int *ret)
{
u32 addr, data, test;
int i, reg_read;
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);
*ret = -EINVAL;
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, QLCNIC_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) {
if (printk_ratelimit()) {
dev_err(&adapter->pdev->dev,
"failed to read through agent\n");
*ret = -EIO;
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;
cond_resched();
}
out:
mutex_unlock(&adapter->ahw->mem_lock);
return mem->size;
}
/* DMA register base address */
#define QLC_DMA_REG_BASE_ADDR(dma_no) (0x77320000 + (dma_no * 0x10000))
/* DMA register offsets w.r.t base address */
#define QLC_DMA_CMD_BUFF_ADDR_LOW 0
#define QLC_DMA_CMD_BUFF_ADDR_HI 4
#define QLC_DMA_CMD_STATUS_CTRL 8
static int qlcnic_start_pex_dma(struct qlcnic_adapter *adapter,
struct __mem *mem)
{
struct device *dev = &adapter->pdev->dev;
u32 dma_no, dma_base_addr, temp_addr;
int i, ret, dma_sts;
void *tmpl_hdr;
tmpl_hdr = adapter->ahw->fw_dump.tmpl_hdr;
dma_no = qlcnic_get_saved_state(adapter, tmpl_hdr,
QLC_83XX_DMA_ENGINE_INDEX);
dma_base_addr = QLC_DMA_REG_BASE_ADDR(dma_no);
temp_addr = dma_base_addr + QLC_DMA_CMD_BUFF_ADDR_LOW;
ret = qlcnic_ind_wr(adapter, temp_addr, mem->desc_card_addr);
if (ret)
return ret;
temp_addr = dma_base_addr + QLC_DMA_CMD_BUFF_ADDR_HI;
ret = qlcnic_ind_wr(adapter, temp_addr, 0);
if (ret)
return ret;
temp_addr = dma_base_addr + QLC_DMA_CMD_STATUS_CTRL;
ret = qlcnic_ind_wr(adapter, temp_addr, mem->start_dma_cmd);
if (ret)
return ret;
/* Wait for DMA to complete */
temp_addr = dma_base_addr + QLC_DMA_CMD_STATUS_CTRL;
for (i = 0; i < 400; i++) {
dma_sts = qlcnic_ind_rd(adapter, temp_addr);
if (dma_sts & BIT_1)
usleep_range(250, 500);
else
break;
}
if (i >= 400) {
dev_info(dev, "PEX DMA operation timed out");
ret = -EIO;
}
return ret;
}
static u32 qlcnic_read_memory_pexdma(struct qlcnic_adapter *adapter,
struct __mem *mem,
__le32 *buffer, int *ret)
{
struct qlcnic_fw_dump *fw_dump = &adapter->ahw->fw_dump;
u32 temp, dma_base_addr, size = 0, read_size = 0;
struct qlcnic_pex_dma_descriptor *dma_descr;
struct device *dev = &adapter->pdev->dev;
dma_addr_t dma_phys_addr;
void *dma_buffer;
void *tmpl_hdr;
tmpl_hdr = fw_dump->tmpl_hdr;
/* Check if DMA engine is available */
temp = qlcnic_get_saved_state(adapter, tmpl_hdr,
QLC_83XX_DMA_ENGINE_INDEX);
dma_base_addr = QLC_DMA_REG_BASE_ADDR(temp);
temp = qlcnic_ind_rd(adapter,
dma_base_addr + QLC_DMA_CMD_STATUS_CTRL);
if (!(temp & BIT_31)) {
dev_info(dev, "%s: DMA engine is not available\n", __func__);
*ret = -EIO;
return 0;
}
/* Create DMA descriptor */
dma_descr = kzalloc(sizeof(struct qlcnic_pex_dma_descriptor),
GFP_KERNEL);
if (!dma_descr) {
*ret = -ENOMEM;
return 0;
}
/* dma_desc_cmd 0:15 = 0
* dma_desc_cmd 16:19 = mem->dma_desc_cmd 0:3
* dma_desc_cmd 20:23 = pci function number
* dma_desc_cmd 24:31 = mem->dma_desc_cmd 8:15
*/
dma_phys_addr = fw_dump->phys_addr;
dma_buffer = fw_dump->dma_buffer;
temp = 0;
temp = mem->dma_desc_cmd & 0xff0f;
temp |= (adapter->ahw->pci_func & 0xf) << 4;
dma_descr->dma_desc_cmd = (temp << 16) & 0xffff0000;
dma_descr->dma_bus_addr_low = LSD(dma_phys_addr);
dma_descr->dma_bus_addr_high = MSD(dma_phys_addr);
dma_descr->src_addr_high = 0;
/* Collect memory dump using multiple DMA operations if required */
while (read_size < mem->size) {
if (mem->size - read_size >= QLC_PEX_DMA_READ_SIZE)
size = QLC_PEX_DMA_READ_SIZE;
else
size = mem->size - read_size;
dma_descr->src_addr_low = mem->addr + read_size;
dma_descr->read_data_size = size;
/* Write DMA descriptor to MS memory*/
temp = sizeof(struct qlcnic_pex_dma_descriptor) / 16;
*ret = qlcnic_ms_mem_write128(adapter, mem->desc_card_addr,
(u32 *)dma_descr, temp);
if (*ret) {
dev_info(dev, "Failed to write DMA descriptor to MS memory at address 0x%x\n",
mem->desc_card_addr);
goto free_dma_descr;
}
*ret = qlcnic_start_pex_dma(adapter, mem);
if (*ret) {
dev_info(dev, "Failed to start PEX DMA operation\n");
goto free_dma_descr;
}
memcpy(buffer, dma_buffer, size);
buffer += size / 4;
read_size += size;
}
free_dma_descr:
kfree(dma_descr);
return read_size;
}
static u32 qlcnic_read_memory(struct qlcnic_adapter *adapter,
struct qlcnic_dump_entry *entry, __le32 *buffer)
{
struct qlcnic_fw_dump *fw_dump = &adapter->ahw->fw_dump;
struct device *dev = &adapter->pdev->dev;
struct __mem *mem = &entry->region.mem;
u32 data_size;
int ret = 0;
if (fw_dump->use_pex_dma) {
data_size = qlcnic_read_memory_pexdma(adapter, mem, buffer,
&ret);
if (ret)
dev_info(dev,
"Failed to read memory dump using PEX DMA: mask[0x%x]\n",
entry->hdr.mask);
else
return data_size;
}
data_size = qlcnic_read_memory_test_agent(adapter, mem, buffer, &ret);
if (ret) {
dev_info(dev,
"Failed to read memory dump using test agent method: mask[0x%x]\n",
entry->hdr.mask);
return 0;
} else {
return data_size;
}
}
static u32 qlcnic_dump_nop(struct qlcnic_adapter *adapter,
struct qlcnic_dump_entry *entry, __le32 *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_err(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,
__le32 *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, __le32 *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, __le32 *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, __le32 *buffer)
{
u32 fl_addr, size;
struct __mem *rom = &entry->region.mem;
fl_addr = rom->addr;
size = rom->size / 4;
if (!qlcnic_83xx_lockless_flash_read32(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_82xx_check(adapter))
return -EIO;
if (qlcnic_83xx_lock_flash(adapter))
return -EIO;
ret = qlcnic_83xx_lockless_flash_read32(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_83xx_dump_template_hdr tmp_hdr;
u32 size = sizeof(tmp_hdr) / sizeof(u32);
int ret = 0;
if (qlcnic_82xx_check(adapter))
return -EIO;
if (qlcnic_83xx_lock_flash(adapter))
return -EIO;
ret = qlcnic_83xx_lockless_flash_read32(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;
if (qlcnic_alloc_mbx_args(&cmd, adapter, QLCNIC_CMD_TEMP_SIZE))
return -ENOMEM;
err = qlcnic_issue_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;
__le32 *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)
return -ENOMEM;
if (qlcnic_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 = qlcnic_issue_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)
{
struct qlcnic_hardware_context *ahw;
struct qlcnic_fw_dump *fw_dump;
u32 version, csum, *tmp_buf;
u8 use_flash_temp = 0;
u32 temp_size = 0;
void *temp_buffer;
int err;
ahw = adapter->ahw;
fw_dump = &ahw->fw_dump;
err = qlcnic_fw_get_minidump_temp_size(adapter, &version, &temp_size,
&use_flash_temp);
if (err) {
dev_err(&adapter->pdev->dev,
"Can't get template size %d\n", err);
return -EIO;
}
fw_dump->tmpl_hdr = vzalloc(temp_size);
if (!fw_dump->tmpl_hdr)
return -ENOMEM;
tmp_buf = (u32 *)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(fw_dump->tmpl_hdr);
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(fw_dump->tmpl_hdr);
fw_dump->tmpl_hdr = NULL;
return -EIO;
}
qlcnic_cache_tmpl_hdr_values(adapter, fw_dump);
if (fw_dump->use_pex_dma) {
fw_dump->dma_buffer = NULL;
temp_buffer = dma_alloc_coherent(&adapter->pdev->dev,
QLC_PEX_DMA_READ_SIZE,
&fw_dump->phys_addr,
GFP_KERNEL);
if (!temp_buffer)
fw_dump->use_pex_dma = false;
else
fw_dump->dma_buffer = temp_buffer;
}
dev_info(&adapter->pdev->dev,
"Default minidump capture mask 0x%x\n",
fw_dump->cap_mask);
qlcnic_enable_fw_dump_state(adapter);
return 0;
}
int qlcnic_dump_fw(struct qlcnic_adapter *adapter)
{
struct qlcnic_fw_dump *fw_dump = &adapter->ahw->fw_dump;
const struct qlcnic_dump_operations *fw_dump_ops;
struct qlcnic_83xx_dump_template_hdr *hdr_83xx;
u32 entry_offset, dump, no_entries, buf_offset = 0;
int i, k, ops_cnt, ops_index, dump_size = 0;
struct device *dev = &adapter->pdev->dev;
struct qlcnic_hardware_context *ahw;
struct qlcnic_dump_entry *entry;
void *tmpl_hdr;
u32 ocm_window;
__le32 *buffer;
char mesg[64];
char *msg[] = {mesg, NULL};
ahw = adapter->ahw;
tmpl_hdr = fw_dump->tmpl_hdr;
/* Return if we don't have firmware dump template header */
if (!tmpl_hdr)
return -EIO;
if (!qlcnic_check_fw_dump_state(adapter)) {
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;
}
netif_info(adapter->ahw, drv, adapter->netdev, "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 & fw_dump->cap_mask)
dump_size += qlcnic_get_cap_size(adapter, tmpl_hdr, k);
if (!dump_size)
return -EIO;
fw_dump->data = vzalloc(dump_size);
if (!fw_dump->data)
return -ENOMEM;
buffer = fw_dump->data;
fw_dump->size = dump_size;
no_entries = fw_dump->num_entries;
entry_offset = fw_dump->offset;
qlcnic_set_sys_info(adapter, tmpl_hdr, 0, QLCNIC_DRIVER_VERSION);
qlcnic_set_sys_info(adapter, tmpl_hdr, 1, adapter->fw_version);
if (qlcnic_82xx_check(adapter)) {
ops_cnt = ARRAY_SIZE(qlcnic_fw_dump_ops);
fw_dump_ops = qlcnic_fw_dump_ops;
} else {
hdr_83xx = tmpl_hdr;
ops_cnt = ARRAY_SIZE(qlcnic_83xx_fw_dump_ops);
fw_dump_ops = qlcnic_83xx_fw_dump_ops;
ocm_window = hdr_83xx->ocm_wnd_reg[ahw->pci_func];
hdr_83xx->saved_state[QLC_83XX_OCM_INDEX] = ocm_window;
hdr_83xx->saved_state[QLC_83XX_PCI_INDEX] = ahw->pci_func;
}
for (i = 0; i < no_entries; i++) {
entry = tmpl_hdr + entry_offset;
if (!(entry->hdr.mask & fw_dump->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(dev, "Skipping unknown entry opcode %d\n",
entry->hdr.type);
entry->hdr.flags |= QLCNIC_DUMP_SKIP;
entry_offset += entry->hdr.offset;
continue;
}
/* Collect dump for this entry */
dump = fw_dump_ops[ops_index].handler(adapter, entry, buffer);
if (!qlcnic_valid_dump_entry(dev, entry, dump)) {
entry->hdr.flags |= QLCNIC_DUMP_SKIP;
entry_offset += entry->hdr.offset;
continue;
}
buf_offset += entry->hdr.cap_size;
entry_offset += entry->hdr.offset;
buffer = fw_dump->data + buf_offset;
cond_resched();
}
fw_dump->clr = 1;
snprintf(mesg, sizeof(mesg), "FW_DUMP=%s", adapter->netdev->name);
netdev_info(adapter->netdev,
"Dump data %d bytes captured, dump data address = %p, template header size %d bytes, template address = %p\n",
fw_dump->size, fw_dump->data, fw_dump->tmpl_hdr_size,
fw_dump->tmpl_hdr);
/* Send a udev event to notify availability of FW dump */
kobject_uevent_env(&dev->kobj, KOBJ_CHANGE, msg);
return 0;
}
static inline bool
qlcnic_83xx_md_check_extended_dump_capability(struct qlcnic_adapter *adapter)
{
/* For special adapters (with 0x8830 device ID), where iSCSI firmware
* dump needs to be captured as part of regular firmware dump
* collection process, firmware exports it's capability through
* capability registers
*/
return ((adapter->pdev->device == PCI_DEVICE_ID_QLOGIC_QLE8830) &&
(adapter->ahw->extra_capability[0] &
QLCNIC_FW_CAPABILITY_2_EXT_ISCSI_DUMP));
}
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;
bool extended = false;
int ret;
prev_version = adapter->fw_version;
current_version = qlcnic_83xx_get_fw_version(adapter);
if (fw_dump->tmpl_hdr == NULL || current_version > prev_version) {
vfree(fw_dump->tmpl_hdr);
fw_dump->tmpl_hdr = NULL;
if (qlcnic_83xx_md_check_extended_dump_capability(adapter))
extended = !qlcnic_83xx_extend_md_capab(adapter);
ret = qlcnic_fw_cmd_get_minidump_temp(adapter);
if (ret)
return;
dev_info(&pdev->dev, "Supports FW dump capability\n");
/* Once we have minidump template with extended iSCSI dump
* capability, update the minidump capture mask to 0x1f as
* per FW requirement
*/
if (extended) {
struct qlcnic_83xx_dump_template_hdr *hdr;
hdr = fw_dump->tmpl_hdr;
if (!hdr)
return;
hdr->drv_cap_mask = 0x1f;
fw_dump->cap_mask = 0x1f;
dev_info(&pdev->dev,
"Extended iSCSI dump capability and updated capture mask to 0x1f\n");
}
}
}
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