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/*
* Copyright (C) 2017 Chelsio Communications. All rights reserved.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms and conditions of the GNU General Public License,
* version 2, as published by the Free Software Foundation.
*
* This program is distributed in the hope it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
* more details.
*
* The full GNU General Public License is included in this distribution in
* the file called "COPYING".
*
*/
#include "t4_regs.h"
#include "cxgb4.h"
#include "cudbg_if.h"
#include "cudbg_lib_common.h"
#include "cudbg_lib.h"
#include "cudbg_entity.h"
static void cudbg_write_and_release_buff(struct cudbg_buffer *pin_buff,
struct cudbg_buffer *dbg_buff)
{
cudbg_update_buff(pin_buff, dbg_buff);
cudbg_put_buff(pin_buff, dbg_buff);
}
static int is_fw_attached(struct cudbg_init *pdbg_init)
{
struct adapter *padap = pdbg_init->adap;
if (!(padap->flags & FW_OK) || padap->use_bd)
return 0;
return 1;
}
/* This function will add additional padding bytes into debug_buffer to make it
* 4 byte aligned.
*/
void cudbg_align_debug_buffer(struct cudbg_buffer *dbg_buff,
struct cudbg_entity_hdr *entity_hdr)
{
u8 zero_buf[4] = {0};
u8 padding, remain;
remain = (dbg_buff->offset - entity_hdr->start_offset) % 4;
padding = 4 - remain;
if (remain) {
memcpy(((u8 *)dbg_buff->data) + dbg_buff->offset, &zero_buf,
padding);
dbg_buff->offset += padding;
entity_hdr->num_pad = padding;
}
entity_hdr->size = dbg_buff->offset - entity_hdr->start_offset;
}
struct cudbg_entity_hdr *cudbg_get_entity_hdr(void *outbuf, int i)
{
struct cudbg_hdr *cudbg_hdr = (struct cudbg_hdr *)outbuf;
return (struct cudbg_entity_hdr *)
((char *)outbuf + cudbg_hdr->hdr_len +
(sizeof(struct cudbg_entity_hdr) * (i - 1)));
}
int cudbg_collect_reg_dump(struct cudbg_init *pdbg_init,
struct cudbg_buffer *dbg_buff,
struct cudbg_error *cudbg_err)
{
struct adapter *padap = pdbg_init->adap;
struct cudbg_buffer temp_buff = { 0 };
u32 buf_size = 0;
int rc = 0;
if (is_t4(padap->params.chip))
buf_size = T4_REGMAP_SIZE;
else if (is_t5(padap->params.chip) || is_t6(padap->params.chip))
buf_size = T5_REGMAP_SIZE;
rc = cudbg_get_buff(dbg_buff, buf_size, &temp_buff);
if (rc)
return rc;
t4_get_regs(padap, (void *)temp_buff.data, temp_buff.size);
cudbg_write_and_release_buff(&temp_buff, dbg_buff);
return rc;
}
static int cudbg_read_fw_mem(struct cudbg_init *pdbg_init,
struct cudbg_buffer *dbg_buff, u8 mem_type,
unsigned long tot_len,
struct cudbg_error *cudbg_err)
{
unsigned long bytes, bytes_left, bytes_read = 0;
struct adapter *padap = pdbg_init->adap;
struct cudbg_buffer temp_buff = { 0 };
int rc = 0;
bytes_left = tot_len;
while (bytes_left > 0) {
bytes = min_t(unsigned long, bytes_left,
(unsigned long)CUDBG_CHUNK_SIZE);
rc = cudbg_get_buff(dbg_buff, bytes, &temp_buff);
if (rc)
return rc;
spin_lock(&padap->win0_lock);
rc = t4_memory_rw(padap, MEMWIN_NIC, mem_type,
bytes_read, bytes,
(__be32 *)temp_buff.data,
1);
spin_unlock(&padap->win0_lock);
if (rc) {
cudbg_err->sys_err = rc;
cudbg_put_buff(&temp_buff, dbg_buff);
return rc;
}
bytes_left -= bytes;
bytes_read += bytes;
cudbg_write_and_release_buff(&temp_buff, dbg_buff);
}
return rc;
}
static void cudbg_collect_mem_info(struct cudbg_init *pdbg_init,
struct card_mem *mem_info)
{
struct adapter *padap = pdbg_init->adap;
u32 value;
value = t4_read_reg(padap, MA_EDRAM0_BAR_A);
value = EDRAM0_SIZE_G(value);
mem_info->size_edc0 = (u16)value;
value = t4_read_reg(padap, MA_EDRAM1_BAR_A);
value = EDRAM1_SIZE_G(value);
mem_info->size_edc1 = (u16)value;
value = t4_read_reg(padap, MA_TARGET_MEM_ENABLE_A);
if (value & EDRAM0_ENABLE_F)
mem_info->mem_flag |= (1 << EDC0_FLAG);
if (value & EDRAM1_ENABLE_F)
mem_info->mem_flag |= (1 << EDC1_FLAG);
}
static void cudbg_t4_fwcache(struct cudbg_init *pdbg_init,
struct cudbg_error *cudbg_err)
{
struct adapter *padap = pdbg_init->adap;
int rc;
if (is_fw_attached(pdbg_init)) {
/* Flush uP dcache before reading edcX/mcX */
rc = t4_fwcache(padap, FW_PARAM_DEV_FWCACHE_FLUSH);
if (rc)
cudbg_err->sys_warn = rc;
}
}
static int cudbg_collect_mem_region(struct cudbg_init *pdbg_init,
struct cudbg_buffer *dbg_buff,
struct cudbg_error *cudbg_err,
u8 mem_type)
{
struct card_mem mem_info = {0};
unsigned long flag, size;
int rc;
cudbg_t4_fwcache(pdbg_init, cudbg_err);
cudbg_collect_mem_info(pdbg_init, &mem_info);
switch (mem_type) {
case MEM_EDC0:
flag = (1 << EDC0_FLAG);
size = cudbg_mbytes_to_bytes(mem_info.size_edc0);
break;
case MEM_EDC1:
flag = (1 << EDC1_FLAG);
size = cudbg_mbytes_to_bytes(mem_info.size_edc1);
break;
default:
rc = CUDBG_STATUS_ENTITY_NOT_FOUND;
goto err;
}
if (mem_info.mem_flag & flag) {
rc = cudbg_read_fw_mem(pdbg_init, dbg_buff, mem_type,
size, cudbg_err);
if (rc)
goto err;
} else {
rc = CUDBG_STATUS_ENTITY_NOT_FOUND;
goto err;
}
err:
return rc;
}
int cudbg_collect_edc0_meminfo(struct cudbg_init *pdbg_init,
struct cudbg_buffer *dbg_buff,
struct cudbg_error *cudbg_err)
{
return cudbg_collect_mem_region(pdbg_init, dbg_buff, cudbg_err,
MEM_EDC0);
}
int cudbg_collect_edc1_meminfo(struct cudbg_init *pdbg_init,
struct cudbg_buffer *dbg_buff,
struct cudbg_error *cudbg_err)
{
return cudbg_collect_mem_region(pdbg_init, dbg_buff, cudbg_err,
MEM_EDC1);
}
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