#include <linux/pci.h>
#include <linux/interrupt.h>
#include <linux/debugfs.h>
#include <linux/sched.h>
#include <linux/bitops.h>
#include <linux/gfp.h>
#include <linux/vmalloc.h>
#include <linux/module.h>
#include <linux/wait.h>
#include <linux/seq_file.h>
#include "iwl-drv.h"
#include "iwl-trans.h"
#include "iwl-csr.h"
#include "iwl-prph.h"
#include "iwl-scd.h"
#include "iwl-agn-hw.h"
#include "fw/error-dump.h"
#include "fw/dbg.h"
#include "fw/api/tx.h"
#include "fw/acpi.h"
#include "mei/iwl-mei.h"
#include "internal.h"
#include "iwl-fh.h"
#include "pcie/iwl-context-info-v2.h"
#include "pcie/utils.h"
#define IWL_HOST_MON_BLOCK_PEMON 0x00
#define IWL_HOST_MON_BLOCK_HIPM 0x22
#define IWL_HOST_MON_BLOCK_PEMON_VEC0 0x00
#define IWL_HOST_MON_BLOCK_PEMON_VEC1 0x01
#define IWL_HOST_MON_BLOCK_PEMON_WFPM 0x06
static void iwl_dump_host_monitor_block(struct iwl_trans *trans,
u32 block, u32 vec, u32 iter)
{
int i;
IWL_ERR(trans, "Host monitor block 0x%x vector 0x%x\n", block, vec);
iwl_write32(trans, CSR_MONITOR_CFG_REG, (block << 8) | vec);
for (i = 0; i < iter; i++)
IWL_ERR(trans, " value [iter %d]: 0x%08x\n",
i, iwl_read32(trans, CSR_MONITOR_STATUS_REG));
}
static void iwl_pcie_dump_host_monitor(struct iwl_trans *trans)
{
switch (trans->mac_cfg->device_family) {
case IWL_DEVICE_FAMILY_22000:
case IWL_DEVICE_FAMILY_AX210:
IWL_ERR(trans, "CSR_RESET = 0x%x\n",
iwl_read32(trans, CSR_RESET));
iwl_dump_host_monitor_block(trans, IWL_HOST_MON_BLOCK_PEMON,
IWL_HOST_MON_BLOCK_PEMON_VEC0, 15);
iwl_dump_host_monitor_block(trans, IWL_HOST_MON_BLOCK_PEMON,
IWL_HOST_MON_BLOCK_PEMON_VEC1, 15);
iwl_dump_host_monitor_block(trans, IWL_HOST_MON_BLOCK_PEMON,
IWL_HOST_MON_BLOCK_PEMON_WFPM, 15);
iwl_dump_host_monitor_block(trans, IWL_HOST_MON_BLOCK_HIPM,
IWL_HOST_MON_BLOCK_PEMON_VEC0, 1);
break;
default:
return;
}
}
#define IWL_FW_MEM_EXTENDED_START 0x40000
#define IWL_FW_MEM_EXTENDED_END 0x57FFF
int iwl_trans_pcie_sw_reset(struct iwl_trans *trans, bool retake_ownership)
{
if (trans->mac_cfg->device_family >= IWL_DEVICE_FAMILY_BZ) {
iwl_set_bit(trans, CSR_GP_CNTRL,
CSR_GP_CNTRL_REG_FLAG_SW_RESET);
usleep_range(10000, 20000);
} else {
iwl_set_bit(trans, CSR_RESET,
CSR_RESET_REG_FLAG_SW_RESET);
usleep_range(5000, 6000);
}
if (retake_ownership)
return iwl_pcie_prepare_card_hw(trans);
return 0;
}
static void iwl_pcie_free_fw_monitor(struct iwl_trans *trans)
{
struct iwl_dram_data *fw_mon = &trans->dbg.fw_mon;
if (!fw_mon->size)
return;
dma_free_coherent(trans->dev, fw_mon->size, fw_mon->block,
fw_mon->physical);
fw_mon->block = NULL;
fw_mon->physical = 0;
fw_mon->size = 0;
}
static void iwl_pcie_alloc_fw_monitor_block(struct iwl_trans *trans,
u8 max_power)
{
struct iwl_dram_data *fw_mon = &trans->dbg.fw_mon;
void *block = NULL;
dma_addr_t physical = 0;
u32 size = 0;
u8 power;
if (fw_mon->size) {
memset(fw_mon->block, 0, fw_mon->size);
return;
}
for (power = max_power; power >= 11; power--) {
size = BIT(power);
block = dma_alloc_coherent(trans->dev, size, &physical,
GFP_KERNEL | __GFP_NOWARN);
if (!block)
continue;
IWL_INFO(trans,
"Allocated 0x%08x bytes for firmware monitor.\n",
size);
break;
}
if (WARN_ON_ONCE(!block))
return;
if (power != max_power)
IWL_INFO(trans,
"Sorry - debug buffer is only %luK while you requested %luK\n",
(unsigned long)BIT(power - 10),
(unsigned long)BIT(max_power - 10));
fw_mon->block = block;
fw_mon->physical = physical;
fw_mon->size = size;
}
void iwl_pcie_alloc_fw_monitor(struct iwl_trans *trans, u8 max_power)
{
if (!max_power) {
max_power = 26;
} else {
max_power += 11;
}
if (WARN(max_power > 26,
"External buffer size for monitor is too big %d, check the FW TLV\n",
max_power))
return;
iwl_pcie_alloc_fw_monitor_block(trans, max_power);
}
static u32 iwl_trans_pcie_read_shr(struct iwl_trans *trans, u32 reg)
{
iwl_write32(trans, HEEP_CTRL_WRD_PCIEX_CTRL_REG,
((reg & 0x0000ffff) | (2 << 28)));
return iwl_read32(trans, HEEP_CTRL_WRD_PCIEX_DATA_REG);
}
static void iwl_trans_pcie_write_shr(struct iwl_trans *trans, u32 reg, u32 val)
{
iwl_write32(trans, HEEP_CTRL_WRD_PCIEX_DATA_REG, val);
iwl_write32(trans, HEEP_CTRL_WRD_PCIEX_CTRL_REG,
((reg & 0x0000ffff) | (3 << 28)));
}
static void iwl_pcie_set_pwr(struct iwl_trans *trans, bool vaux)
{
if (trans->mac_cfg->base->apmg_not_supported)
return;
if (vaux && pci_pme_capable(to_pci_dev(trans->dev), PCI_D3cold))
iwl_set_bits_mask_prph(trans, APMG_PS_CTRL_REG,
APMG_PS_CTRL_VAL_PWR_SRC_VAUX,
~APMG_PS_CTRL_MSK_PWR_SRC);
else
iwl_set_bits_mask_prph(trans, APMG_PS_CTRL_REG,
APMG_PS_CTRL_VAL_PWR_SRC_VMAIN,
~APMG_PS_CTRL_MSK_PWR_SRC);
}
#define PCI_CFG_RETRY_TIMEOUT 0x041
void iwl_pcie_apm_config(struct iwl_trans *trans)
{
struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans);
u16 lctl;
u16 cap;
iwl_set_bit(trans, CSR_GIO_REG, CSR_GIO_REG_VAL_L0S_DISABLED);
pcie_capability_read_word(trans_pcie->pci_dev, PCI_EXP_LNKCTL, &lctl);
trans_pcie->pm_support = !(lctl & PCI_EXP_LNKCTL_ASPM_L0S);
pcie_capability_read_word(trans_pcie->pci_dev, PCI_EXP_DEVCTL2, &cap);
trans_pcie->ltr_enabled = cap & PCI_EXP_DEVCTL2_LTR_EN;
IWL_DEBUG_POWER(trans, "L1 %sabled - LTR %sabled\n",
(lctl & PCI_EXP_LNKCTL_ASPM_L1) ? "En" : "Dis",
trans_pcie->ltr_enabled ? "En" : "Dis");
}
static int iwl_pcie_apm_init(struct iwl_trans *trans)
{
int ret;
IWL_DEBUG_INFO(trans, "Init card's basic functions\n");
if (trans->mac_cfg->device_family < IWL_DEVICE_FAMILY_8000)
iwl_set_bit(trans, CSR_GIO_CHICKEN_BITS,
CSR_GIO_CHICKEN_BITS_REG_BIT_DIS_L0S_EXIT_TIMER);
iwl_set_bit(trans, CSR_GIO_CHICKEN_BITS,
CSR_GIO_CHICKEN_BITS_REG_BIT_L1A_NO_L0S_RX);
iwl_set_bit(trans, CSR_DBG_HPET_MEM_REG, CSR_DBG_HPET_MEM_REG_VAL);
iwl_set_bit(trans, CSR_HW_IF_CONFIG_REG,
CSR_HW_IF_CONFIG_REG_HAP_WAKE);
iwl_pcie_apm_config(trans);
if (trans->mac_cfg->base->pll_cfg)
iwl_set_bit(trans, CSR_ANA_PLL_CFG, CSR50_ANA_PLL_CFG_VAL);
ret = iwl_trans_activate_nic(trans);
if (ret)
return ret;
if (trans->cfg->host_interrupt_operation_mode) {
iwl_read_prph(trans, OSC_CLK);
iwl_read_prph(trans, OSC_CLK);
iwl_set_bits_prph(trans, OSC_CLK, OSC_CLK_FORCE_CONTROL);
iwl_read_prph(trans, OSC_CLK);
iwl_read_prph(trans, OSC_CLK);
}
if (!trans->mac_cfg->base->apmg_not_supported) {
iwl_write_prph(trans, APMG_CLK_EN_REG,
APMG_CLK_VAL_DMA_CLK_RQT);
udelay(20);
iwl_set_bits_prph(trans, APMG_PCIDEV_STT_REG,
APMG_PCIDEV_STT_VAL_L1_ACT_DIS);
iwl_write_prph(trans, APMG_RTC_INT_STT_REG,
APMG_RTC_INT_STT_RFKILL);
}
set_bit(STATUS_DEVICE_ENABLED, &trans->status);
return 0;
}
static void iwl_pcie_apm_lp_xtal_enable(struct iwl_trans *trans)
{
int ret;
u32 apmg_gp1_reg;
u32 apmg_xtal_cfg_reg;
u32 dl_cfg_reg;
iwl_trans_set_bit(trans, CSR_GP_CNTRL,
CSR_GP_CNTRL_REG_FLAG_XTAL_ON);
ret = iwl_trans_pcie_sw_reset(trans, true);
if (!ret)
ret = iwl_trans_activate_nic(trans);
if (WARN_ON(ret)) {
iwl_trans_clear_bit(trans, CSR_GP_CNTRL,
CSR_GP_CNTRL_REG_FLAG_XTAL_ON);
return;
}
iwl_clear_bits_prph(trans, APMG_PCIDEV_STT_REG,
APMG_PCIDEV_STT_VAL_PERSIST_DIS);
apmg_xtal_cfg_reg = iwl_trans_pcie_read_shr(trans,
SHR_APMG_XTAL_CFG_REG);
iwl_trans_pcie_write_shr(trans, SHR_APMG_XTAL_CFG_REG,
apmg_xtal_cfg_reg |
SHR_APMG_XTAL_CFG_XTAL_ON_REQ);
ret = iwl_trans_pcie_sw_reset(trans, true);
if (ret)
IWL_ERR(trans,
"iwl_pcie_apm_lp_xtal_enable: failed to retake NIC ownership\n");
apmg_gp1_reg = iwl_trans_pcie_read_shr(trans, SHR_APMG_GP1_REG);
iwl_trans_pcie_write_shr(trans, SHR_APMG_GP1_REG, apmg_gp1_reg |
SHR_APMG_GP1_WF_XTAL_LP_EN |
SHR_APMG_GP1_CHICKEN_BIT_SELECT);
dl_cfg_reg = iwl_trans_pcie_read_shr(trans, SHR_APMG_DL_CFG_REG);
iwl_trans_pcie_write_shr(trans, SHR_APMG_DL_CFG_REG, dl_cfg_reg &
~SHR_APMG_DL_CFG_DL_CLOCK_POWER_UP);
iwl_set_bit(trans, CSR_HW_IF_CONFIG_REG,
CSR_HW_IF_CONFIG_REG_PERSISTENCE);
iwl_clear_bit(trans, CSR_GP_CNTRL, CSR_GP_CNTRL_REG_FLAG_INIT_DONE);
iwl_trans_set_bit(trans, CSR_MONITOR_CFG_REG,
CSR_MONITOR_XTAL_RESOURCES);
iwl_trans_clear_bit(trans, CSR_GP_CNTRL,
CSR_GP_CNTRL_REG_FLAG_XTAL_ON);
udelay(10);
iwl_trans_pcie_write_shr(trans, SHR_APMG_XTAL_CFG_REG,
apmg_xtal_cfg_reg &
~SHR_APMG_XTAL_CFG_XTAL_ON_REQ);
}
void iwl_pcie_apm_stop_master(struct iwl_trans *trans)
{
int ret;
if (trans->mac_cfg->device_family >= IWL_DEVICE_FAMILY_BZ) {
iwl_set_bit(trans, CSR_GP_CNTRL,
CSR_GP_CNTRL_REG_FLAG_BUS_MASTER_DISABLE_REQ);
ret = iwl_poll_bits(trans, CSR_GP_CNTRL,
CSR_GP_CNTRL_REG_FLAG_BUS_MASTER_DISABLE_STATUS,
100);
usleep_range(10000, 20000);
} else {
iwl_set_bit(trans, CSR_RESET, CSR_RESET_REG_FLAG_STOP_MASTER);
ret = iwl_poll_bits(trans, CSR_RESET,
CSR_RESET_REG_FLAG_MASTER_DISABLED, 100);
}
if (ret)
IWL_WARN(trans, "Master Disable Timed Out, 100 usec\n");
IWL_DEBUG_INFO(trans, "stop master\n");
}
static void iwl_pcie_apm_stop(struct iwl_trans *trans, bool op_mode_leave)
{
IWL_DEBUG_INFO(trans, "Stop card, put in low power state\n");
if (op_mode_leave) {
if (!test_bit(STATUS_DEVICE_ENABLED, &trans->status))
iwl_pcie_apm_init(trans);
if (trans->mac_cfg->device_family == IWL_DEVICE_FAMILY_7000)
iwl_set_bits_prph(trans, APMG_PCIDEV_STT_REG,
APMG_PCIDEV_STT_VAL_WAKE_ME);
else if (trans->mac_cfg->device_family >=
IWL_DEVICE_FAMILY_8000) {
iwl_set_bit(trans, CSR_DBG_LINK_PWR_MGMT_REG,
CSR_RESET_LINK_PWR_MGMT_DISABLED);
iwl_set_bit(trans, CSR_HW_IF_CONFIG_REG,
CSR_HW_IF_CONFIG_REG_WAKE_ME |
CSR_HW_IF_CONFIG_REG_WAKE_ME_PCIE_OWNER_EN);
mdelay(1);
iwl_clear_bit(trans, CSR_DBG_LINK_PWR_MGMT_REG,
CSR_RESET_LINK_PWR_MGMT_DISABLED);
}
mdelay(5);
}
clear_bit(STATUS_DEVICE_ENABLED, &trans->status);
iwl_pcie_apm_stop_master(trans);
if (trans->cfg->lp_xtal_workaround) {
iwl_pcie_apm_lp_xtal_enable(trans);
return;
}
iwl_trans_pcie_sw_reset(trans, false);
iwl_clear_bit(trans, CSR_GP_CNTRL, CSR_GP_CNTRL_REG_FLAG_INIT_DONE);
}
static int iwl_pcie_nic_init(struct iwl_trans *trans)
{
struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans);
int ret;
spin_lock_bh(&trans_pcie->irq_lock);
ret = iwl_pcie_apm_init(trans);
spin_unlock_bh(&trans_pcie->irq_lock);
if (ret)
return ret;
iwl_pcie_set_pwr(trans, false);
iwl_op_mode_nic_config(trans->op_mode);
ret = iwl_pcie_rx_init(trans);
if (ret)
return ret;
if (iwl_pcie_tx_init(trans)) {
iwl_pcie_rx_free(trans);
return -ENOMEM;
}
if (trans->mac_cfg->base->shadow_reg_enable) {
iwl_set_bit(trans, CSR_MAC_SHADOW_REG_CTRL, 0x800FFFFF);
IWL_DEBUG_INFO(trans, "Enabling shadow registers in device\n");
}
return 0;
}
#define HW_READY_TIMEOUT (50)
static int iwl_pcie_set_hw_ready(struct iwl_trans *trans)
{
int ret;
iwl_set_bit(trans, CSR_HW_IF_CONFIG_REG,
CSR_HW_IF_CONFIG_REG_PCI_OWN_SET);
ret = iwl_poll_bits(trans, CSR_HW_IF_CONFIG_REG,
CSR_HW_IF_CONFIG_REG_PCI_OWN_SET,
HW_READY_TIMEOUT);
if (!ret)
iwl_set_bit(trans, CSR_MBOX_SET_REG, CSR_MBOX_SET_REG_OS_ALIVE);
IWL_DEBUG_INFO(trans, "hardware%s ready\n", ret ? " not" : "");
return ret;
}
int iwl_pcie_prepare_card_hw(struct iwl_trans *trans)
{
int ret;
int iter;
IWL_DEBUG_INFO(trans, "iwl_trans_prepare_card_hw enter\n");
ret = iwl_pcie_set_hw_ready(trans);
if (!ret) {
trans->csme_own = false;
return 0;
}
iwl_set_bit(trans, CSR_DBG_LINK_PWR_MGMT_REG,
CSR_RESET_LINK_PWR_MGMT_DISABLED);
usleep_range(1000, 2000);
for (iter = 0; iter < 10; iter++) {
int t = 0;
iwl_set_bit(trans, CSR_HW_IF_CONFIG_REG,
CSR_HW_IF_CONFIG_REG_WAKE_ME);
do {
ret = iwl_pcie_set_hw_ready(trans);
if (!ret) {
trans->csme_own = false;
return 0;
}
if (iwl_mei_is_connected()) {
IWL_DEBUG_INFO(trans,
"Couldn't prepare the card but SAP is connected\n");
trans->csme_own = true;
if (trans->mac_cfg->device_family !=
IWL_DEVICE_FAMILY_9000)
IWL_ERR(trans,
"SAP not supported for this NIC family\n");
return -EBUSY;
}
usleep_range(200, 1000);
t += 200;
} while (t < 150000);
msleep(25);
}
IWL_ERR(trans, "Couldn't prepare the card\n");
return ret;
}
static void iwl_pcie_load_firmware_chunk_fh(struct iwl_trans *trans,
u32 dst_addr, dma_addr_t phy_addr,
u32 byte_cnt)
{
iwl_write32(trans, FH_TCSR_CHNL_TX_CONFIG_REG(FH_SRVC_CHNL),
FH_TCSR_TX_CONFIG_REG_VAL_DMA_CHNL_PAUSE);
iwl_write32(trans, FH_SRVC_CHNL_SRAM_ADDR_REG(FH_SRVC_CHNL),
dst_addr);
iwl_write32(trans, FH_TFDIB_CTRL0_REG(FH_SRVC_CHNL),
phy_addr & FH_MEM_TFDIB_DRAM_ADDR_LSB_MSK);
iwl_write32(trans, FH_TFDIB_CTRL1_REG(FH_SRVC_CHNL),
(iwl_get_dma_hi_addr(phy_addr)
<< FH_MEM_TFDIB_REG1_ADDR_BITSHIFT) | byte_cnt);
iwl_write32(trans, FH_TCSR_CHNL_TX_BUF_STS_REG(FH_SRVC_CHNL),
BIT(FH_TCSR_CHNL_TX_BUF_STS_REG_POS_TB_NUM) |
BIT(FH_TCSR_CHNL_TX_BUF_STS_REG_POS_TB_IDX) |
FH_TCSR_CHNL_TX_BUF_STS_REG_VAL_TFDB_VALID);
iwl_write32(trans, FH_TCSR_CHNL_TX_CONFIG_REG(FH_SRVC_CHNL),
FH_TCSR_TX_CONFIG_REG_VAL_DMA_CHNL_ENABLE |
FH_TCSR_TX_CONFIG_REG_VAL_DMA_CREDIT_DISABLE |
FH_TCSR_TX_CONFIG_REG_VAL_CIRQ_HOST_ENDTFD);
}
static int iwl_pcie_load_firmware_chunk(struct iwl_trans *trans,
u32 dst_addr, dma_addr_t phy_addr,
u32 byte_cnt)
{
struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans);
int ret;
trans_pcie->ucode_write_complete = false;
if (!iwl_trans_grab_nic_access(trans))
return -EIO;
iwl_pcie_load_firmware_chunk_fh(trans, dst_addr, phy_addr,
byte_cnt);
iwl_trans_release_nic_access(trans);
ret = wait_event_timeout(trans_pcie->ucode_write_waitq,
trans_pcie->ucode_write_complete, 5 * HZ);
if (!ret) {
IWL_ERR(trans, "Failed to load firmware chunk!\n");
iwl_trans_pcie_dump_regs(trans, trans_pcie->pci_dev);
return -ETIMEDOUT;
}
return 0;
}
static int iwl_pcie_load_section(struct iwl_trans *trans, u8 section_num,
const struct fw_desc *section)
{
u8 *v_addr;
dma_addr_t p_addr;
u32 offset, chunk_sz = min_t(u32, FH_MEM_TB_MAX_LENGTH, section->len);
int ret = 0;
IWL_DEBUG_FW(trans, "[%d] uCode section being loaded...\n",
section_num);
v_addr = dma_alloc_coherent(trans->dev, chunk_sz, &p_addr,
GFP_KERNEL | __GFP_NOWARN);
if (!v_addr) {
IWL_DEBUG_INFO(trans, "Falling back to small chunks of DMA\n");
chunk_sz = PAGE_SIZE;
v_addr = dma_alloc_coherent(trans->dev, chunk_sz,
&p_addr, GFP_KERNEL);
if (!v_addr)
return -ENOMEM;
}
for (offset = 0; offset < section->len; offset += chunk_sz) {
u32 copy_size, dst_addr;
bool extended_addr = false;
copy_size = min_t(u32, chunk_sz, section->len - offset);
dst_addr = section->offset + offset;
if (dst_addr >= IWL_FW_MEM_EXTENDED_START &&
dst_addr <= IWL_FW_MEM_EXTENDED_END)
extended_addr = true;
if (extended_addr)
iwl_set_bits_prph(trans, LMPM_CHICK,
LMPM_CHICK_EXTENDED_ADDR_SPACE);
memcpy(v_addr, (const u8 *)section->data + offset, copy_size);
ret = iwl_pcie_load_firmware_chunk(trans, dst_addr, p_addr,
copy_size);
if (extended_addr)
iwl_clear_bits_prph(trans, LMPM_CHICK,
LMPM_CHICK_EXTENDED_ADDR_SPACE);
if (ret) {
IWL_ERR(trans,
"Could not load the [%d] uCode section\n",
section_num);
break;
}
}
dma_free_coherent(trans->dev, chunk_sz, v_addr, p_addr);
return ret;
}
static int iwl_pcie_load_cpu_sections_8000(struct iwl_trans *trans,
const struct fw_img *image,
int cpu,
int *first_ucode_section)
{
int shift_param;
int i, ret = 0, sec_num = 0x1;
u32 val, last_read_idx = 0;
if (cpu == 1) {
shift_param = 0;
*first_ucode_section = 0;
} else {
shift_param = 16;
(*first_ucode_section)++;
}
for (i = *first_ucode_section; i < image->num_sec; i++) {
last_read_idx = i;
if (!image->sec[i].data ||
image->sec[i].offset == CPU1_CPU2_SEPARATOR_SECTION ||
image->sec[i].offset == PAGING_SEPARATOR_SECTION) {
IWL_DEBUG_FW(trans,
"Break since Data not valid or Empty section, sec = %d\n",
i);
break;
}
ret = iwl_pcie_load_section(trans, i, &image->sec[i]);
if (ret)
return ret;
val = iwl_read_direct32(trans, FH_UCODE_LOAD_STATUS);
val = val | (sec_num << shift_param);
iwl_write_direct32(trans, FH_UCODE_LOAD_STATUS, val);
sec_num = (sec_num << 1) | 0x1;
}
*first_ucode_section = last_read_idx;
iwl_enable_interrupts(trans);
if (trans->mac_cfg->gen2) {
if (cpu == 1)
iwl_write_prph(trans, UREG_UCODE_LOAD_STATUS,
0xFFFF);
else
iwl_write_prph(trans, UREG_UCODE_LOAD_STATUS,
0xFFFFFFFF);
} else {
if (cpu == 1)
iwl_write_direct32(trans, FH_UCODE_LOAD_STATUS,
0xFFFF);
else
iwl_write_direct32(trans, FH_UCODE_LOAD_STATUS,
0xFFFFFFFF);
}
return 0;
}
static int iwl_pcie_load_cpu_sections(struct iwl_trans *trans,
const struct fw_img *image,
int cpu,
int *first_ucode_section)
{
int i, ret = 0;
u32 last_read_idx = 0;
if (cpu == 1)
*first_ucode_section = 0;
else
(*first_ucode_section)++;
for (i = *first_ucode_section; i < image->num_sec; i++) {
last_read_idx = i;
if (!image->sec[i].data ||
image->sec[i].offset == CPU1_CPU2_SEPARATOR_SECTION ||
image->sec[i].offset == PAGING_SEPARATOR_SECTION) {
IWL_DEBUG_FW(trans,
"Break since Data not valid or Empty section, sec = %d\n",
i);
break;
}
ret = iwl_pcie_load_section(trans, i, &image->sec[i]);
if (ret)
return ret;
}
*first_ucode_section = last_read_idx;
return 0;
}
static void iwl_pcie_apply_destination_ini(struct iwl_trans *trans)
{
enum iwl_fw_ini_allocation_id alloc_id = IWL_FW_INI_ALLOCATION_ID_DBGC1;
struct iwl_fw_ini_allocation_tlv *fw_mon_cfg =
&trans->dbg.fw_mon_cfg[alloc_id];
struct iwl_dram_data *frag;
if (!iwl_trans_dbg_ini_valid(trans))
return;
if (le32_to_cpu(fw_mon_cfg->buf_location) ==
IWL_FW_INI_LOCATION_SRAM_PATH) {
IWL_DEBUG_FW(trans, "WRT: Applying SMEM buffer destination\n");
iwl_set_bit(trans, CSR_HW_IF_CONFIG_REG,
CSR_HW_IF_CONFIG_REG_BIT_MONITOR_SRAM);
return;
}
if (le32_to_cpu(fw_mon_cfg->buf_location) !=
IWL_FW_INI_LOCATION_DRAM_PATH ||
!trans->dbg.fw_mon_ini[alloc_id].num_frags)
return;
frag = &trans->dbg.fw_mon_ini[alloc_id].frags[0];
IWL_DEBUG_FW(trans, "WRT: Applying DRAM destination (alloc_id=%u)\n",
alloc_id);
iwl_write_umac_prph(trans, MON_BUFF_BASE_ADDR_VER2,
frag->physical >> MON_BUFF_SHIFT_VER2);
iwl_write_umac_prph(trans, MON_BUFF_END_ADDR_VER2,
(frag->physical + frag->size - 256) >>
MON_BUFF_SHIFT_VER2);
}
void iwl_pcie_apply_destination(struct iwl_trans *trans)
{
const struct iwl_fw_dbg_dest_tlv_v1 *dest = trans->dbg.dest_tlv;
const struct iwl_dram_data *fw_mon = &trans->dbg.fw_mon;
int i;
if (iwl_trans_dbg_ini_valid(trans)) {
iwl_pcie_apply_destination_ini(trans);
return;
}
IWL_INFO(trans, "Applying debug destination %s\n",
get_fw_dbg_mode_string(dest->monitor_mode));
if (dest->monitor_mode == EXTERNAL_MODE)
iwl_pcie_alloc_fw_monitor(trans, dest->size_power);
else
IWL_WARN(trans, "PCI should have external buffer debug\n");
for (i = 0; i < trans->dbg.n_dest_reg; i++) {
u32 addr = le32_to_cpu(dest->reg_ops[i].addr);
u32 val = le32_to_cpu(dest->reg_ops[i].val);
switch (dest->reg_ops[i].op) {
case CSR_ASSIGN:
iwl_write32(trans, addr, val);
break;
case CSR_SETBIT:
iwl_set_bit(trans, addr, BIT(val));
break;
case CSR_CLEARBIT:
iwl_clear_bit(trans, addr, BIT(val));
break;
case PRPH_ASSIGN:
iwl_write_prph(trans, addr, val);
break;
case PRPH_SETBIT:
iwl_set_bits_prph(trans, addr, BIT(val));
break;
case PRPH_CLEARBIT:
iwl_clear_bits_prph(trans, addr, BIT(val));
break;
case PRPH_BLOCKBIT:
if (iwl_read_prph(trans, addr) & BIT(val)) {
IWL_ERR(trans,
"BIT(%u) in address 0x%x is 1, stopping FW configuration\n",
val, addr);
goto monitor;
}
break;
default:
IWL_ERR(trans, "FW debug - unknown OP %d\n",
dest->reg_ops[i].op);
break;
}
}
monitor:
if (dest->monitor_mode == EXTERNAL_MODE && fw_mon->size) {
iwl_write_prph(trans, le32_to_cpu(dest->base_reg),
fw_mon->physical >> dest->base_shift);
if (trans->mac_cfg->device_family >= IWL_DEVICE_FAMILY_8000)
iwl_write_prph(trans, le32_to_cpu(dest->end_reg),
(fw_mon->physical + fw_mon->size -
256) >> dest->end_shift);
else
iwl_write_prph(trans, le32_to_cpu(dest->end_reg),
(fw_mon->physical + fw_mon->size) >>
dest->end_shift);
}
}
static int iwl_pcie_load_given_ucode(struct iwl_trans *trans,
const struct fw_img *image)
{
int ret = 0;
int first_ucode_section;
IWL_DEBUG_FW(trans, "working with %s CPU\n",
image->is_dual_cpus ? "Dual" : "Single");
ret = iwl_pcie_load_cpu_sections(trans, image, 1, &first_ucode_section);
if (ret)
return ret;
if (image->is_dual_cpus) {
iwl_write_prph(trans,
LMPM_SECURE_UCODE_LOAD_CPU2_HDR_ADDR,
LMPM_SECURE_CPU2_HDR_MEM_SPACE);
ret = iwl_pcie_load_cpu_sections(trans, image, 2,
&first_ucode_section);
if (ret)
return ret;
}
if (iwl_pcie_dbg_on(trans))
iwl_pcie_apply_destination(trans);
iwl_enable_interrupts(trans);
iwl_write32(trans, CSR_RESET, 0);
return 0;
}
static int iwl_pcie_load_given_ucode_8000(struct iwl_trans *trans,
const struct fw_img *image)
{
int ret = 0;
int first_ucode_section;
IWL_DEBUG_FW(trans, "working with %s CPU\n",
image->is_dual_cpus ? "Dual" : "Single");
if (iwl_pcie_dbg_on(trans))
iwl_pcie_apply_destination(trans);
IWL_DEBUG_POWER(trans, "Original WFPM value = 0x%08X\n",
iwl_read_prph(trans, WFPM_GP2));
iwl_write_prph(trans, WFPM_GP2, 0x01010101);
iwl_write_prph(trans, RELEASE_CPU_RESET, RELEASE_CPU_RESET_BIT);
ret = iwl_pcie_load_cpu_sections_8000(trans, image, 1,
&first_ucode_section);
if (ret)
return ret;
return iwl_pcie_load_cpu_sections_8000(trans, image, 2,
&first_ucode_section);
}
bool iwl_pcie_check_hw_rf_kill(struct iwl_trans *trans)
{
struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans);
bool hw_rfkill = iwl_is_rfkill_set(trans);
bool prev = test_bit(STATUS_RFKILL_OPMODE, &trans->status);
bool report;
if (hw_rfkill) {
set_bit(STATUS_RFKILL_HW, &trans->status);
set_bit(STATUS_RFKILL_OPMODE, &trans->status);
} else {
clear_bit(STATUS_RFKILL_HW, &trans->status);
if (trans_pcie->opmode_down)
clear_bit(STATUS_RFKILL_OPMODE, &trans->status);
}
report = test_bit(STATUS_RFKILL_OPMODE, &trans->status);
if (prev != report)
iwl_trans_pcie_rf_kill(trans, report, false);
return hw_rfkill;
}
struct iwl_causes_list {
u16 mask_reg;
u8 bit;
u8 addr;
};
#define IWL_CAUSE(reg, mask) \
{ \
.mask_reg = reg, \
.bit = ilog2(mask), \
.addr = ilog2(mask) + \
((reg) == CSR_MSIX_FH_INT_MASK_AD ? -16 : \
(reg) == CSR_MSIX_HW_INT_MASK_AD ? 16 : \
0xffff), \
}
static const struct iwl_causes_list causes_list_common[] = {
IWL_CAUSE(CSR_MSIX_FH_INT_MASK_AD, MSIX_FH_INT_CAUSES_D2S_CH0_NUM),
IWL_CAUSE(CSR_MSIX_FH_INT_MASK_AD, MSIX_FH_INT_CAUSES_D2S_CH1_NUM),
IWL_CAUSE(CSR_MSIX_FH_INT_MASK_AD, MSIX_FH_INT_CAUSES_S2D),
IWL_CAUSE(CSR_MSIX_FH_INT_MASK_AD, MSIX_FH_INT_CAUSES_FH_ERR),
IWL_CAUSE(CSR_MSIX_HW_INT_MASK_AD, MSIX_HW_INT_CAUSES_REG_ALIVE),
IWL_CAUSE(CSR_MSIX_HW_INT_MASK_AD, MSIX_HW_INT_CAUSES_REG_WAKEUP),
IWL_CAUSE(CSR_MSIX_HW_INT_MASK_AD, MSIX_HW_INT_CAUSES_REG_RESET_DONE),
IWL_CAUSE(CSR_MSIX_HW_INT_MASK_AD, MSIX_HW_INT_CAUSES_REG_TOP_FATAL_ERR),
IWL_CAUSE(CSR_MSIX_HW_INT_MASK_AD, MSIX_HW_INT_CAUSES_REG_CT_KILL),
IWL_CAUSE(CSR_MSIX_HW_INT_MASK_AD, MSIX_HW_INT_CAUSES_REG_RF_KILL),
IWL_CAUSE(CSR_MSIX_HW_INT_MASK_AD, MSIX_HW_INT_CAUSES_REG_PERIODIC),
IWL_CAUSE(CSR_MSIX_HW_INT_MASK_AD, MSIX_HW_INT_CAUSES_REG_SCD),
IWL_CAUSE(CSR_MSIX_HW_INT_MASK_AD, MSIX_HW_INT_CAUSES_REG_FH_TX),
IWL_CAUSE(CSR_MSIX_HW_INT_MASK_AD, MSIX_HW_INT_CAUSES_REG_HW_ERR),
IWL_CAUSE(CSR_MSIX_HW_INT_MASK_AD, MSIX_HW_INT_CAUSES_REG_HAP),
};
static const struct iwl_causes_list causes_list_pre_bz[] = {
IWL_CAUSE(CSR_MSIX_HW_INT_MASK_AD, MSIX_HW_INT_CAUSES_REG_SW_ERR),
};
static const struct iwl_causes_list causes_list_bz[] = {
IWL_CAUSE(CSR_MSIX_HW_INT_MASK_AD, MSIX_HW_INT_CAUSES_REG_SW_ERR_BZ),
};
static void iwl_pcie_map_list(struct iwl_trans *trans,
const struct iwl_causes_list *causes,
int arr_size, int val)
{
int i;
for (i = 0; i < arr_size; i++) {
iwl_write8(trans, CSR_MSIX_IVAR(causes[i].addr), val);
iwl_clear_bit(trans, causes[i].mask_reg,
BIT(causes[i].bit));
}
}
static void iwl_pcie_map_non_rx_causes(struct iwl_trans *trans)
{
struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans);
int val = trans_pcie->def_irq | MSIX_NON_AUTO_CLEAR_CAUSE;
iwl_pcie_map_list(trans, causes_list_common,
ARRAY_SIZE(causes_list_common), val);
if (trans->mac_cfg->device_family >= IWL_DEVICE_FAMILY_BZ)
iwl_pcie_map_list(trans, causes_list_bz,
ARRAY_SIZE(causes_list_bz), val);
else
iwl_pcie_map_list(trans, causes_list_pre_bz,
ARRAY_SIZE(causes_list_pre_bz), val);
}
static void iwl_pcie_map_rx_causes(struct iwl_trans *trans)
{
struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans);
u32 offset =
trans_pcie->shared_vec_mask & IWL_SHARED_IRQ_FIRST_RSS ? 1 : 0;
u32 val, idx;
val = BIT(MSIX_FH_INT_CAUSES_Q(0));
for (idx = 1; idx < trans->info.num_rxqs; idx++) {
iwl_write8(trans, CSR_MSIX_RX_IVAR(idx),
MSIX_FH_INT_CAUSES_Q(idx - offset));
val |= BIT(MSIX_FH_INT_CAUSES_Q(idx));
}
iwl_write32(trans, CSR_MSIX_FH_INT_MASK_AD, ~val);
val = MSIX_FH_INT_CAUSES_Q(0);
if (trans_pcie->shared_vec_mask & IWL_SHARED_IRQ_NON_RX)
val |= MSIX_NON_AUTO_CLEAR_CAUSE;
iwl_write8(trans, CSR_MSIX_RX_IVAR(0), val);
if (trans_pcie->shared_vec_mask & IWL_SHARED_IRQ_FIRST_RSS)
iwl_write8(trans, CSR_MSIX_RX_IVAR(1), val);
}
void iwl_pcie_conf_msix_hw(struct iwl_trans_pcie *trans_pcie)
{
struct iwl_trans *trans = trans_pcie->trans;
if (!trans_pcie->msix_enabled) {
if (trans->mac_cfg->mq_rx_supported &&
test_bit(STATUS_DEVICE_ENABLED, &trans->status))
iwl_write_umac_prph(trans, UREG_CHICK,
UREG_CHICK_MSI_ENABLE);
return;
}
if (test_bit(STATUS_DEVICE_ENABLED, &trans->status))
iwl_write_umac_prph(trans, UREG_CHICK, UREG_CHICK_MSIX_ENABLE);
iwl_pcie_map_rx_causes(trans);
iwl_pcie_map_non_rx_causes(trans);
}
static void iwl_pcie_init_msix(struct iwl_trans_pcie *trans_pcie)
{
struct iwl_trans *trans = trans_pcie->trans;
iwl_pcie_conf_msix_hw(trans_pcie);
if (!trans_pcie->msix_enabled)
return;
trans_pcie->fh_init_mask = ~iwl_read32(trans, CSR_MSIX_FH_INT_MASK_AD);
trans_pcie->fh_mask = trans_pcie->fh_init_mask;
trans_pcie->hw_init_mask = ~iwl_read32(trans, CSR_MSIX_HW_INT_MASK_AD);
trans_pcie->hw_mask = trans_pcie->hw_init_mask;
}
static void _iwl_trans_pcie_stop_device(struct iwl_trans *trans, bool from_irq)
{
struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans);
lockdep_assert_held(&trans_pcie->mutex);
if (trans_pcie->is_down)
return;
trans_pcie->is_down = true;
iwl_disable_interrupts(trans);
iwl_pcie_disable_ict(trans);
if (test_and_clear_bit(STATUS_DEVICE_ENABLED, &trans->status)) {
IWL_DEBUG_INFO(trans,
"DEVICE_ENABLED bit was set and is now cleared\n");
if (!from_irq)
iwl_pcie_synchronize_irqs(trans);
iwl_pcie_rx_napi_sync(trans);
iwl_pcie_tx_stop(trans);
iwl_pcie_rx_stop(trans);
if (!trans->mac_cfg->base->apmg_not_supported) {
iwl_write_prph(trans, APMG_CLK_DIS_REG,
APMG_CLK_VAL_DMA_CLK_RQT);
udelay(5);
}
}
if (trans->mac_cfg->device_family >= IWL_DEVICE_FAMILY_BZ)
iwl_clear_bit(trans, CSR_GP_CNTRL,
CSR_GP_CNTRL_REG_FLAG_BZ_MAC_ACCESS_REQ);
else
iwl_clear_bit(trans, CSR_GP_CNTRL,
CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
iwl_pcie_apm_stop(trans, false);
iwl_trans_pcie_sw_reset(trans, true);
iwl_pcie_conf_msix_hw(trans_pcie);
iwl_disable_interrupts(trans);
clear_bit(STATUS_SYNC_HCMD_ACTIVE, &trans->status);
clear_bit(STATUS_INT_ENABLED, &trans->status);
clear_bit(STATUS_TPOWER_PMI, &trans->status);
iwl_enable_rfkill_int(trans);
}
void iwl_pcie_synchronize_irqs(struct iwl_trans *trans)
{
struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans);
if (trans_pcie->msix_enabled) {
int i;
for (i = 0; i < trans_pcie->alloc_vecs; i++)
synchronize_irq(trans_pcie->msix_entries[i].vector);
} else {
synchronize_irq(trans_pcie->pci_dev->irq);
}
}
int iwl_trans_pcie_start_fw(struct iwl_trans *trans,
const struct iwl_fw *fw,
const struct fw_img *img,
bool run_in_rfkill)
{
struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans);
bool hw_rfkill;
int ret;
if (iwl_pcie_prepare_card_hw(trans)) {
IWL_WARN(trans, "Exit HW not ready\n");
return -EIO;
}
iwl_enable_rfkill_int(trans);
iwl_write32(trans, CSR_INT, 0xFFFFFFFF);
iwl_disable_interrupts(trans);
iwl_pcie_synchronize_irqs(trans);
mutex_lock(&trans_pcie->mutex);
hw_rfkill = iwl_pcie_check_hw_rf_kill(trans);
if (hw_rfkill && !run_in_rfkill) {
ret = -ERFKILL;
goto out;
}
if (trans_pcie->is_down) {
IWL_WARN(trans,
"Can't start_fw since the HW hasn't been started\n");
ret = -EIO;
goto out;
}
iwl_write32(trans, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
iwl_write32(trans, CSR_UCODE_DRV_GP1_CLR,
CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
iwl_write32(trans, CSR_INT, 0xFFFFFFFF);
ret = iwl_pcie_nic_init(trans);
if (ret) {
IWL_ERR(trans, "Unable to init nic\n");
goto out;
}
iwl_enable_fw_load_int(trans);
iwl_write32(trans, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
iwl_write32(trans, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
if (trans->mac_cfg->device_family >= IWL_DEVICE_FAMILY_8000)
ret = iwl_pcie_load_given_ucode_8000(trans, img);
else
ret = iwl_pcie_load_given_ucode(trans, img);
hw_rfkill = iwl_pcie_check_hw_rf_kill(trans);
if (hw_rfkill && !run_in_rfkill)
ret = -ERFKILL;
out:
mutex_unlock(&trans_pcie->mutex);
return ret;
}
void iwl_trans_pcie_fw_alive(struct iwl_trans *trans)
{
iwl_pcie_reset_ict(trans);
iwl_pcie_tx_start(trans);
}
void iwl_trans_pcie_handle_stop_rfkill(struct iwl_trans *trans,
bool was_in_rfkill)
{
bool hw_rfkill;
hw_rfkill = iwl_is_rfkill_set(trans);
if (hw_rfkill) {
set_bit(STATUS_RFKILL_HW, &trans->status);
set_bit(STATUS_RFKILL_OPMODE, &trans->status);
} else {
clear_bit(STATUS_RFKILL_HW, &trans->status);
clear_bit(STATUS_RFKILL_OPMODE, &trans->status);
}
if (hw_rfkill != was_in_rfkill)
iwl_trans_pcie_rf_kill(trans, hw_rfkill, false);
}
void iwl_trans_pcie_stop_device(struct iwl_trans *trans)
{
struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans);
bool was_in_rfkill;
iwl_op_mode_time_point(trans->op_mode,
IWL_FW_INI_TIME_POINT_HOST_DEVICE_DISABLE,
NULL);
mutex_lock(&trans_pcie->mutex);
trans_pcie->opmode_down = true;
was_in_rfkill = test_bit(STATUS_RFKILL_OPMODE, &trans->status);
_iwl_trans_pcie_stop_device(trans, false);
iwl_trans_pcie_handle_stop_rfkill(trans, was_in_rfkill);
mutex_unlock(&trans_pcie->mutex);
}
void iwl_trans_pcie_rf_kill(struct iwl_trans *trans, bool state, bool from_irq)
{
struct iwl_trans_pcie __maybe_unused *trans_pcie =
IWL_TRANS_GET_PCIE_TRANS(trans);
lockdep_assert_held(&trans_pcie->mutex);
IWL_WARN(trans, "reporting RF_KILL (radio %s)\n",
state ? "disabled" : "enabled");
if (iwl_op_mode_hw_rf_kill(trans->op_mode, state) &&
!WARN_ON(trans->mac_cfg->gen2))
_iwl_trans_pcie_stop_device(trans, from_irq);
}
static void iwl_pcie_d3_complete_suspend(struct iwl_trans *trans,
bool reset)
{
iwl_disable_interrupts(trans);
iwl_pcie_disable_ict(trans);
iwl_pcie_synchronize_irqs(trans);
if (trans->mac_cfg->device_family >= IWL_DEVICE_FAMILY_BZ) {
iwl_clear_bit(trans, CSR_GP_CNTRL,
CSR_GP_CNTRL_REG_FLAG_BZ_MAC_ACCESS_REQ);
iwl_clear_bit(trans, CSR_GP_CNTRL,
CSR_GP_CNTRL_REG_FLAG_MAC_INIT);
} else {
iwl_clear_bit(trans, CSR_GP_CNTRL,
CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
iwl_clear_bit(trans, CSR_GP_CNTRL,
CSR_GP_CNTRL_REG_FLAG_INIT_DONE);
}
if (reset) {
iwl_trans_pcie_tx_reset(trans);
}
iwl_pcie_set_pwr(trans, true);
}
static int iwl_pcie_d3_handshake(struct iwl_trans *trans, bool suspend)
{
struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans);
int ret;
if (trans->mac_cfg->device_family < IWL_DEVICE_FAMILY_AX210)
return 0;
trans_pcie->sx_state = IWL_SX_WAITING;
if (trans->mac_cfg->device_family == IWL_DEVICE_FAMILY_AX210)
iwl_write_umac_prph(trans, UREG_DOORBELL_TO_ISR6,
suspend ? UREG_DOORBELL_TO_ISR6_SUSPEND :
UREG_DOORBELL_TO_ISR6_RESUME);
else
iwl_write32(trans, CSR_IPC_SLEEP_CONTROL,
suspend ? CSR_IPC_SLEEP_CONTROL_SUSPEND :
CSR_IPC_SLEEP_CONTROL_RESUME);
ret = wait_event_timeout(trans_pcie->sx_waitq,
trans_pcie->sx_state != IWL_SX_WAITING,
2 * HZ);
if (!ret) {
IWL_ERR(trans, "Timeout %s D3\n",
suspend ? "entering" : "exiting");
ret = -ETIMEDOUT;
} else {
ret = 0;
}
if (trans_pcie->sx_state == IWL_SX_ERROR) {
IWL_ERR(trans, "FW error while %s D3\n",
suspend ? "entering" : "exiting");
ret = -EIO;
}
trans_pcie->sx_state = IWL_SX_INVALID;
return ret;
}
int iwl_trans_pcie_d3_suspend(struct iwl_trans *trans, bool reset)
{
int ret;
if (!reset)
iwl_set_bit(trans, CSR_HW_IF_CONFIG_REG,
CSR_HW_IF_CONFIG_REG_PERSISTENCE);
ret = iwl_pcie_d3_handshake(trans, true);
if (ret)
return ret;
iwl_pcie_d3_complete_suspend(trans, reset);
return 0;
}
int iwl_trans_pcie_d3_resume(struct iwl_trans *trans,
bool reset)
{
struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans);
u32 val;
int ret;
if (trans->mac_cfg->device_family >= IWL_DEVICE_FAMILY_BZ)
iwl_set_bit(trans, CSR_GP_CNTRL,
CSR_GP_CNTRL_REG_FLAG_BZ_MAC_ACCESS_REQ);
else
iwl_set_bit(trans, CSR_GP_CNTRL,
CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
ret = iwl_trans_activate_nic(trans);
if (ret) {
IWL_ERR(trans, "Failed to init nic upon resume. err = %d\n",
ret);
return ret;
}
iwl_pcie_conf_msix_hw(trans_pcie);
if (!trans_pcie->msix_enabled)
iwl_pcie_reset_ict(trans);
iwl_enable_interrupts(trans);
iwl_pcie_set_pwr(trans, false);
if (!reset) {
iwl_clear_bit(trans, CSR_GP_CNTRL,
CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
} else {
iwl_trans_pcie_tx_reset(trans);
ret = iwl_pcie_rx_init(trans);
if (ret) {
IWL_ERR(trans,
"Failed to resume the device (RX reset)\n");
return ret;
}
}
IWL_DEBUG_POWER(trans, "WFPM value upon resume = 0x%08X\n",
iwl_read_umac_prph(trans, WFPM_GP2));
val = iwl_read32(trans, CSR_RESET);
if (val & CSR_RESET_REG_FLAG_NEVO_RESET) {
IWL_INFO(trans, "Device was reset during suspend\n");
trans->state = IWL_TRANS_NO_FW;
return -ENOENT;
}
return iwl_pcie_d3_handshake(trans, false);
}
static void
iwl_pcie_set_interrupt_capa(struct pci_dev *pdev,
struct iwl_trans *trans,
const struct iwl_mac_cfg *mac_cfg,
struct iwl_trans_info *info)
{
struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans);
int max_irqs, num_irqs, i, ret;
u16 pci_cmd;
u32 max_rx_queues = IWL_MAX_RX_HW_QUEUES;
if (!mac_cfg->mq_rx_supported)
goto enable_msi;
if (mac_cfg->device_family <= IWL_DEVICE_FAMILY_9000)
max_rx_queues = IWL_9000_MAX_RX_HW_QUEUES;
max_irqs = min_t(u32, num_online_cpus() + 2, max_rx_queues);
for (i = 0; i < max_irqs; i++)
trans_pcie->msix_entries[i].entry = i;
num_irqs = pci_enable_msix_range(pdev, trans_pcie->msix_entries,
MSIX_MIN_INTERRUPT_VECTORS,
max_irqs);
if (num_irqs < 0) {
IWL_DEBUG_INFO(trans,
"Failed to enable msi-x mode (ret %d). Moving to msi mode.\n",
num_irqs);
goto enable_msi;
}
trans_pcie->def_irq = (num_irqs == max_irqs) ? num_irqs - 1 : 0;
IWL_DEBUG_INFO(trans,
"MSI-X enabled. %d interrupt vectors were allocated\n",
num_irqs);
if (num_irqs <= max_irqs - 2) {
info->num_rxqs = num_irqs + 1;
trans_pcie->shared_vec_mask = IWL_SHARED_IRQ_NON_RX |
IWL_SHARED_IRQ_FIRST_RSS;
} else if (num_irqs == max_irqs - 1) {
info->num_rxqs = num_irqs;
trans_pcie->shared_vec_mask = IWL_SHARED_IRQ_NON_RX;
} else {
info->num_rxqs = num_irqs - 1;
}
IWL_DEBUG_INFO(trans,
"MSI-X enabled with rx queues %d, vec mask 0x%x\n",
info->num_rxqs, trans_pcie->shared_vec_mask);
WARN_ON(info->num_rxqs > IWL_MAX_RX_HW_QUEUES);
trans_pcie->alloc_vecs = num_irqs;
trans_pcie->msix_enabled = true;
return;
enable_msi:
info->num_rxqs = 1;
ret = pci_enable_msi(pdev);
if (ret) {
dev_err(&pdev->dev, "pci_enable_msi failed - %d\n", ret);
pci_read_config_word(pdev, PCI_COMMAND, &pci_cmd);
if (pci_cmd & PCI_COMMAND_INTX_DISABLE) {
pci_cmd &= ~PCI_COMMAND_INTX_DISABLE;
pci_write_config_word(pdev, PCI_COMMAND, pci_cmd);
}
}
}
static void iwl_pcie_irq_set_affinity(struct iwl_trans *trans,
struct iwl_trans_info *info)
{
#if defined(CONFIG_SMP)
int iter_rx_q, i, ret, cpu, offset;
struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans);
i = trans_pcie->shared_vec_mask & IWL_SHARED_IRQ_FIRST_RSS ? 0 : 1;
iter_rx_q = info->num_rxqs - 1 + i;
offset = 1 + i;
for (; i < iter_rx_q ; i++) {
cpu = cpumask_next(i - offset, cpu_online_mask);
cpumask_set_cpu(cpu, &trans_pcie->affinity_mask[i]);
ret = irq_set_affinity_hint(trans_pcie->msix_entries[i].vector,
&trans_pcie->affinity_mask[i]);
if (ret)
IWL_ERR(trans_pcie->trans,
"Failed to set affinity mask for IRQ %d\n",
trans_pcie->msix_entries[i].vector);
}
#endif
}
static int iwl_pcie_init_msix_handler(struct pci_dev *pdev,
struct iwl_trans_pcie *trans_pcie,
struct iwl_trans_info *info)
{
int i;
for (i = 0; i < trans_pcie->alloc_vecs; i++) {
int ret;
struct msix_entry *msix_entry;
const char *qname = queue_name(&pdev->dev, trans_pcie, i);
if (!qname)
return -ENOMEM;
msix_entry = &trans_pcie->msix_entries[i];
ret = devm_request_threaded_irq(&pdev->dev,
msix_entry->vector,
iwl_pcie_msix_isr,
(i == trans_pcie->def_irq) ?
iwl_pcie_irq_msix_handler :
iwl_pcie_irq_rx_msix_handler,
IRQF_SHARED,
qname,
msix_entry);
if (ret) {
IWL_ERR(trans_pcie->trans,
"Error allocating IRQ %d\n", i);
return ret;
}
}
iwl_pcie_irq_set_affinity(trans_pcie->trans, info);
return 0;
}
static int iwl_trans_pcie_clear_persistence_bit(struct iwl_trans *trans)
{
u32 hpm, wprot;
switch (trans->mac_cfg->device_family) {
case IWL_DEVICE_FAMILY_9000:
wprot = PREG_PRPH_WPROT_9000;
break;
case IWL_DEVICE_FAMILY_22000:
wprot = PREG_PRPH_WPROT_22000;
break;
default:
return 0;
}
hpm = iwl_read_umac_prph_no_grab(trans, HPM_DEBUG);
if (!iwl_trans_is_hw_error_value(hpm) && (hpm & PERSISTENCE_BIT)) {
u32 wprot_val = iwl_read_umac_prph_no_grab(trans, wprot);
if (wprot_val & PREG_WFPM_ACCESS) {
IWL_ERR(trans,
"Error, can not clear persistence bit\n");
return -EPERM;
}
iwl_write_umac_prph_no_grab(trans, HPM_DEBUG,
hpm & ~PERSISTENCE_BIT);
}
return 0;
}
static int iwl_pcie_gen2_force_power_gating(struct iwl_trans *trans)
{
int ret;
ret = iwl_trans_activate_nic(trans);
if (ret < 0)
return ret;
iwl_set_bits_prph(trans, HPM_HIPM_GEN_CFG,
HPM_HIPM_GEN_CFG_CR_FORCE_ACTIVE);
udelay(20);
iwl_set_bits_prph(trans, HPM_HIPM_GEN_CFG,
HPM_HIPM_GEN_CFG_CR_PG_EN |
HPM_HIPM_GEN_CFG_CR_SLP_EN);
udelay(20);
iwl_clear_bits_prph(trans, HPM_HIPM_GEN_CFG,
HPM_HIPM_GEN_CFG_CR_FORCE_ACTIVE);
return iwl_trans_pcie_sw_reset(trans, true);
}
int _iwl_trans_pcie_start_hw(struct iwl_trans *trans)
{
struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans);
int err;
lockdep_assert_held(&trans_pcie->mutex);
err = iwl_pcie_prepare_card_hw(trans);
if (err) {
IWL_ERR(trans, "Error while preparing HW: %d\n", err);
return err;
}
err = iwl_trans_pcie_clear_persistence_bit(trans);
if (err)
return err;
err = iwl_trans_pcie_sw_reset(trans, true);
if (err)
return err;
if (trans->mac_cfg->device_family == IWL_DEVICE_FAMILY_22000 &&
trans->mac_cfg->integrated) {
err = iwl_pcie_gen2_force_power_gating(trans);
if (err)
return err;
}
err = iwl_pcie_apm_init(trans);
if (err)
return err;
iwl_pcie_init_msix(trans_pcie);
iwl_enable_rfkill_int(trans);
trans_pcie->opmode_down = false;
trans_pcie->is_down = false;
iwl_pcie_check_hw_rf_kill(trans);
return 0;
}
int iwl_trans_pcie_start_hw(struct iwl_trans *trans)
{
struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans);
int ret;
mutex_lock(&trans_pcie->mutex);
ret = _iwl_trans_pcie_start_hw(trans);
mutex_unlock(&trans_pcie->mutex);
return ret;
}
void iwl_trans_pcie_op_mode_leave(struct iwl_trans *trans)
{
struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans);
mutex_lock(&trans_pcie->mutex);
iwl_disable_interrupts(trans);
iwl_pcie_apm_stop(trans, true);
iwl_disable_interrupts(trans);
iwl_pcie_disable_ict(trans);
mutex_unlock(&trans_pcie->mutex);
iwl_pcie_synchronize_irqs(trans);
}
void iwl_trans_pcie_write8(struct iwl_trans *trans, u32 ofs, u8 val)
{
writeb(val, IWL_TRANS_GET_PCIE_TRANS(trans)->hw_base + ofs);
}
void iwl_trans_pcie_write32(struct iwl_trans *trans, u32 ofs, u32 val)
{
writel(val, IWL_TRANS_GET_PCIE_TRANS(trans)->hw_base + ofs);
}
u32 iwl_trans_pcie_read32(struct iwl_trans *trans, u32 ofs)
{
return readl(IWL_TRANS_GET_PCIE_TRANS(trans)->hw_base + ofs);
}
static u32 iwl_trans_pcie_prph_msk(struct iwl_trans *trans)
{
if (trans->mac_cfg->device_family >= IWL_DEVICE_FAMILY_AX210)
return 0x00FFFFFF;
else
return 0x000FFFFF;
}
u32 iwl_trans_pcie_read_prph(struct iwl_trans *trans, u32 reg)
{
u32 mask = iwl_trans_pcie_prph_msk(trans);
iwl_trans_pcie_write32(trans, HBUS_TARG_PRPH_RADDR,
((reg & mask) | (3 << 24)));
return iwl_trans_pcie_read32(trans, HBUS_TARG_PRPH_RDAT);
}
void iwl_trans_pcie_write_prph(struct iwl_trans *trans, u32 addr, u32 val)
{
u32 mask = iwl_trans_pcie_prph_msk(trans);
iwl_trans_pcie_write32(trans, HBUS_TARG_PRPH_WADDR,
((addr & mask) | (3 << 24)));
iwl_trans_pcie_write32(trans, HBUS_TARG_PRPH_WDAT, val);
}
void iwl_pcie_gen1_2_op_mode_enter(struct iwl_trans *trans)
{
struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans);
iwl_pcie_free_rbs_pool(trans);
trans_pcie->rx_page_order =
iwl_trans_get_rb_size_order(trans->conf.rx_buf_size);
trans_pcie->rx_buf_bytes =
iwl_trans_get_rb_size(trans->conf.rx_buf_size);
}
void iwl_trans_pcie_free_pnvm_dram_regions(struct iwl_dram_regions *dram_regions,
struct device *dev)
{
u8 i;
struct iwl_dram_data *desc_dram = &dram_regions->prph_scratch_mem_desc;
for (i = 0; i < dram_regions->n_regions; i++) {
dma_free_coherent(dev, dram_regions->drams[i].size,
dram_regions->drams[i].block,
dram_regions->drams[i].physical);
}
dram_regions->n_regions = 0;
if (desc_dram->block) {
dma_free_coherent(dev, desc_dram->size,
desc_dram->block,
desc_dram->physical);
}
memset(desc_dram, 0, sizeof(*desc_dram));
}
static void iwl_pcie_free_invalid_tx_cmd(struct iwl_trans *trans)
{
struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans);
iwl_pcie_free_dma_ptr(trans, &trans_pcie->invalid_tx_cmd);
}
static int iwl_pcie_alloc_invalid_tx_cmd(struct iwl_trans *trans)
{
struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans);
struct iwl_cmd_header_wide bad_cmd = {
.cmd = INVALID_WR_PTR_CMD,
.group_id = DEBUG_GROUP,
.sequence = cpu_to_le16(0xffff),
.length = cpu_to_le16(0),
.version = 0,
};
int ret;
ret = iwl_pcie_alloc_dma_ptr(trans, &trans_pcie->invalid_tx_cmd,
sizeof(bad_cmd));
if (ret)
return ret;
memcpy(trans_pcie->invalid_tx_cmd.addr, &bad_cmd, sizeof(bad_cmd));
return 0;
}
void iwl_trans_pcie_free(struct iwl_trans *trans)
{
struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans);
int i;
iwl_pcie_synchronize_irqs(trans);
if (trans->mac_cfg->gen2)
iwl_txq_gen2_tx_free(trans);
else
iwl_pcie_tx_free(trans);
iwl_pcie_rx_free(trans);
if (trans_pcie->rba.alloc_wq) {
destroy_workqueue(trans_pcie->rba.alloc_wq);
trans_pcie->rba.alloc_wq = NULL;
}
if (trans_pcie->msix_enabled) {
for (i = 0; i < trans_pcie->alloc_vecs; i++) {
irq_set_affinity_hint(
trans_pcie->msix_entries[i].vector,
NULL);
}
trans_pcie->msix_enabled = false;
} else {
iwl_pcie_free_ict(trans);
}
free_netdev(trans_pcie->napi_dev);
iwl_pcie_free_invalid_tx_cmd(trans);
iwl_pcie_free_fw_monitor(trans);
iwl_trans_pcie_free_pnvm_dram_regions(&trans_pcie->pnvm_data,
trans->dev);
iwl_trans_pcie_free_pnvm_dram_regions(&trans_pcie->reduced_tables_data,
trans->dev);
mutex_destroy(&trans_pcie->mutex);
if (trans_pcie->txqs.tso_hdr_page) {
for_each_possible_cpu(i) {
struct iwl_tso_hdr_page *p =
per_cpu_ptr(trans_pcie->txqs.tso_hdr_page, i);
if (p && p->page)
__free_page(p->page);
}
free_percpu(trans_pcie->txqs.tso_hdr_page);
}
kmem_cache_destroy(trans_pcie->dev_cmd_pool);
iwl_trans_free(trans);
}
static union acpi_object *
iwl_trans_pcie_call_prod_reset_dsm(struct pci_dev *pdev, u16 cmd, u16 value)
{
#ifdef CONFIG_ACPI
struct iwl_dsm_internal_product_reset_cmd pldr_arg = {
.cmd = cmd,
.value = value,
};
union acpi_object arg = {
.buffer.type = ACPI_TYPE_BUFFER,
.buffer.length = sizeof(pldr_arg),
.buffer.pointer = (void *)&pldr_arg,
};
static const guid_t dsm_guid = GUID_INIT(0x7266172C, 0x220B, 0x4B29,
0x81, 0x4F, 0x75, 0xE4,
0xDD, 0x26, 0xB5, 0xFD);
if (!acpi_check_dsm(ACPI_HANDLE(&pdev->dev), &dsm_guid, ACPI_DSM_REV,
BIT(DSM_INTERNAL_FUNC_PRODUCT_RESET)))
return ERR_PTR(-ENODEV);
return iwl_acpi_get_dsm_object(&pdev->dev, ACPI_DSM_REV,
DSM_INTERNAL_FUNC_PRODUCT_RESET,
&arg, &dsm_guid);
#else
return ERR_PTR(-EOPNOTSUPP);
#endif
}
void iwl_trans_pcie_check_product_reset_mode(struct pci_dev *pdev)
{
union acpi_object *res;
res = iwl_trans_pcie_call_prod_reset_dsm(pdev,
DSM_INTERNAL_PLDR_CMD_GET_MODE,
0);
if (IS_ERR(res))
return;
if (res->type != ACPI_TYPE_INTEGER)
IWL_ERR_DEV(&pdev->dev,
"unexpected return type from product reset DSM\n");
else
IWL_DEBUG_DEV_POWER(&pdev->dev,
"product reset mode is 0x%llx\n",
res->integer.value);
ACPI_FREE(res);
}
static void iwl_trans_pcie_set_product_reset(struct pci_dev *pdev, bool enable,
bool integrated)
{
union acpi_object *res;
u16 mode = enable ? DSM_INTERNAL_PLDR_MODE_EN_PROD_RESET : 0;
if (!integrated)
mode |= DSM_INTERNAL_PLDR_MODE_EN_WIFI_FLR |
DSM_INTERNAL_PLDR_MODE_EN_BT_OFF_ON;
res = iwl_trans_pcie_call_prod_reset_dsm(pdev,
DSM_INTERNAL_PLDR_CMD_SET_MODE,
mode);
if (IS_ERR(res)) {
if (enable)
IWL_ERR_DEV(&pdev->dev,
"ACPI _DSM not available (%d), cannot do product reset\n",
(int)PTR_ERR(res));
return;
}
ACPI_FREE(res);
IWL_DEBUG_DEV_POWER(&pdev->dev, "%sabled product reset via DSM\n",
enable ? "En" : "Dis");
iwl_trans_pcie_check_product_reset_mode(pdev);
}
void iwl_trans_pcie_check_product_reset_status(struct pci_dev *pdev)
{
union acpi_object *res;
res = iwl_trans_pcie_call_prod_reset_dsm(pdev,
DSM_INTERNAL_PLDR_CMD_GET_STATUS,
0);
if (IS_ERR(res))
return;
if (res->type != ACPI_TYPE_INTEGER)
IWL_ERR_DEV(&pdev->dev,
"unexpected return type from product reset DSM\n");
else
IWL_DEBUG_DEV_POWER(&pdev->dev,
"product reset status is 0x%llx\n",
res->integer.value);
ACPI_FREE(res);
}
static void iwl_trans_pcie_call_reset(struct pci_dev *pdev)
{
#ifdef CONFIG_ACPI
struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL };
union acpi_object *p, *ref;
acpi_status status;
int ret = -EINVAL;
status = acpi_evaluate_object(ACPI_HANDLE(&pdev->dev),
"_PRR", NULL, &buffer);
if (ACPI_FAILURE(status)) {
IWL_DEBUG_DEV_POWER(&pdev->dev, "No _PRR method found\n");
goto out;
}
p = buffer.pointer;
if (p->type != ACPI_TYPE_PACKAGE || p->package.count != 1) {
pci_err(pdev, "Bad _PRR return type\n");
goto out;
}
ref = &p->package.elements[0];
if (ref->type != ACPI_TYPE_LOCAL_REFERENCE) {
pci_err(pdev, "_PRR wasn't a reference\n");
goto out;
}
status = acpi_evaluate_object(ref->reference.handle,
"_RST", NULL, NULL);
if (ACPI_FAILURE(status)) {
pci_err(pdev,
"Failed to call _RST on object returned by _PRR (%d)\n",
status);
goto out;
}
ret = 0;
out:
kfree(buffer.pointer);
if (!ret) {
IWL_DEBUG_DEV_POWER(&pdev->dev, "called _RST on _PRR object\n");
return;
}
IWL_DEBUG_DEV_POWER(&pdev->dev,
"No BIOS support, using pci_reset_function()\n");
#endif
pci_reset_function(pdev);
}
struct iwl_trans_pcie_removal {
struct pci_dev *pdev;
struct work_struct work;
enum iwl_reset_mode mode;
bool integrated;
};
static void iwl_trans_pcie_removal_wk(struct work_struct *wk)
{
struct iwl_trans_pcie_removal *removal =
container_of(wk, struct iwl_trans_pcie_removal, work);
struct pci_dev *pdev = removal->pdev;
static char *prop[] = {"EVENT=INACCESSIBLE", NULL};
struct pci_bus *bus;
pci_lock_rescan_remove();
bus = pdev->bus;
if (!bus)
goto out;
kobject_uevent_env(&pdev->dev.kobj, KOBJ_CHANGE, prop);
if (removal->mode == IWL_RESET_MODE_PROD_RESET) {
struct pci_dev *bt = NULL;
if (!removal->integrated) {
int slot = PCI_SLOT(pdev->devfn);
int func = PCI_FUNC(pdev->devfn);
if (func == 0)
bt = pci_get_slot(bus, PCI_DEVFN(slot, 1));
else
pci_info(pdev, "Unexpected function %d\n",
func);
} else {
static const struct pci_device_id bt_device_ids[] = {
#define BT_DEV(_id) { PCI_DEVICE(PCI_VENDOR_ID_INTEL, _id) }
BT_DEV(0xA876),
BT_DEV(0xE476),
BT_DEV(0xE376),
BT_DEV(0xD346),
BT_DEV(0x6E74),
BT_DEV(0x4D76),
BT_DEV(0xD246),
BT_DEV(0x6C46),
{}
};
struct pci_dev *tmp = NULL;
for_each_pci_dev(tmp) {
if (tmp->bus != bus)
continue;
if (pci_match_id(bt_device_ids, tmp)) {
bt = tmp;
break;
}
}
}
if (bt) {
pci_info(bt, "Removal by WiFi due to product reset\n");
pci_stop_and_remove_bus_device(bt);
pci_dev_put(bt);
}
}
iwl_trans_pcie_set_product_reset(pdev,
removal->mode ==
IWL_RESET_MODE_PROD_RESET,
removal->integrated);
if (removal->mode >= IWL_RESET_MODE_FUNC_RESET)
iwl_trans_pcie_call_reset(pdev);
pci_stop_and_remove_bus_device(pdev);
pci_dev_put(pdev);
if (removal->mode >= IWL_RESET_MODE_RESCAN) {
if (bus->parent)
bus = bus->parent;
pci_rescan_bus(bus);
}
out:
pci_unlock_rescan_remove();
kfree(removal);
module_put(THIS_MODULE);
}
void iwl_trans_pcie_reset(struct iwl_trans *trans, enum iwl_reset_mode mode)
{
struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans);
struct iwl_trans_pcie_removal *removal;
char _msg = 0, *msg = &_msg;
if (WARN_ON(mode < IWL_RESET_MODE_REMOVE_ONLY ||
mode == IWL_RESET_MODE_BACKOFF))
return;
if (test_bit(STATUS_TRANS_DEAD, &trans->status))
return;
if (trans_pcie->me_present && mode == IWL_RESET_MODE_PROD_RESET) {
mode = IWL_RESET_MODE_FUNC_RESET;
if (trans_pcie->me_present < 0)
msg = " instead of product reset as ME may be present";
else
msg = " instead of product reset as ME is present";
}
IWL_INFO(trans, "scheduling reset (mode=%d%s)\n", mode, msg);
iwl_pcie_dump_csr(trans);
if (!try_module_get(THIS_MODULE)) {
IWL_ERR(trans,
"Module is being unloaded - abort\n");
return;
}
removal = kzalloc_obj(*removal, GFP_ATOMIC);
if (!removal) {
module_put(THIS_MODULE);
return;
}
set_bit(STATUS_TRANS_DEAD, &trans->status);
removal->pdev = to_pci_dev(trans->dev);
removal->mode = mode;
removal->integrated = trans->mac_cfg->integrated;
INIT_WORK(&removal->work, iwl_trans_pcie_removal_wk);
pci_dev_get(removal->pdev);
schedule_work(&removal->work);
}
EXPORT_SYMBOL(iwl_trans_pcie_reset);
bool _iwl_trans_pcie_grab_nic_access(struct iwl_trans *trans, bool silent)
{
int ret;
struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans);
u32 write = CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ;
u32 mask = CSR_GP_CNTRL_REG_FLAG_MAC_CLOCK_READY |
CSR_GP_CNTRL_REG_FLAG_GOING_TO_SLEEP;
u32 poll = CSR_GP_CNTRL_REG_VAL_MAC_ACCESS_EN;
if (test_bit(STATUS_TRANS_DEAD, &trans->status))
return false;
spin_lock(&trans_pcie->reg_lock);
if (trans_pcie->cmd_hold_nic_awake)
goto out;
if (trans->mac_cfg->device_family >= IWL_DEVICE_FAMILY_BZ) {
write = CSR_GP_CNTRL_REG_FLAG_BZ_MAC_ACCESS_REQ;
mask = CSR_GP_CNTRL_REG_FLAG_MAC_STATUS;
poll = CSR_GP_CNTRL_REG_FLAG_MAC_STATUS;
}
iwl_trans_set_bit(trans, CSR_GP_CNTRL, write);
if (trans->mac_cfg->device_family >= IWL_DEVICE_FAMILY_8000)
udelay(2);
ret = iwl_poll_bits_mask(trans, CSR_GP_CNTRL, poll, mask, 15000);
if (unlikely(ret)) {
u32 cntrl = iwl_read32(trans, CSR_GP_CNTRL);
if (silent) {
spin_unlock(&trans_pcie->reg_lock);
return false;
}
WARN_ONCE(1,
"Timeout waiting for hardware access (CSR_GP_CNTRL 0x%08x)\n",
cntrl);
iwl_trans_pcie_dump_regs(trans, trans_pcie->pci_dev);
if (iwlwifi_mod_params.remove_when_gone && cntrl == ~0U)
iwl_trans_pcie_reset(trans,
IWL_RESET_MODE_REMOVE_ONLY);
else
iwl_write32(trans, CSR_RESET,
CSR_RESET_REG_FLAG_FORCE_NMI);
spin_unlock(&trans_pcie->reg_lock);
return false;
}
out:
__release(&trans_pcie->reg_lock);
return true;
}
bool iwl_trans_pcie_grab_nic_access(struct iwl_trans *trans)
{
bool ret;
local_bh_disable();
ret = _iwl_trans_pcie_grab_nic_access(trans, false);
if (ret) {
return ret;
}
local_bh_enable();
return false;
}
void iwl_trans_pcie_resched_with_nic_access(struct iwl_trans *trans)
{
struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans);
spin_unlock_bh(&trans_pcie->reg_lock);
cond_resched();
spin_lock_bh(&trans_pcie->reg_lock);
}
void __releases(nic_access_nobh)
iwl_trans_pcie_release_nic_access(struct iwl_trans *trans)
{
struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans);
lockdep_assert_held(&trans_pcie->reg_lock);
__acquire(&trans_pcie->reg_lock);
if (trans_pcie->cmd_hold_nic_awake)
goto out;
if (trans->mac_cfg->device_family >= IWL_DEVICE_FAMILY_BZ)
iwl_trans_clear_bit(trans, CSR_GP_CNTRL,
CSR_GP_CNTRL_REG_FLAG_BZ_MAC_ACCESS_REQ);
else
iwl_trans_clear_bit(trans, CSR_GP_CNTRL,
CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
out:
__release(nic_access_nobh);
spin_unlock_bh(&trans_pcie->reg_lock);
}
int iwl_trans_pcie_read_mem(struct iwl_trans *trans, u32 addr,
void *buf, int dwords)
{
#define IWL_MAX_HW_ERRS 5
unsigned int num_consec_hw_errors = 0;
int offs = 0;
u32 *vals = buf;
while (offs < dwords) {
unsigned long end = jiffies + HZ / 2;
bool resched = false;
if (iwl_trans_grab_nic_access(trans)) {
iwl_write32(trans, HBUS_TARG_MEM_RADDR,
addr + 4 * offs);
while (offs < dwords) {
vals[offs] = iwl_read32(trans,
HBUS_TARG_MEM_RDAT);
if (iwl_trans_is_hw_error_value(vals[offs]))
num_consec_hw_errors++;
else
num_consec_hw_errors = 0;
if (num_consec_hw_errors >= IWL_MAX_HW_ERRS) {
iwl_trans_release_nic_access(trans);
return -EIO;
}
offs++;
if (time_after(jiffies, end)) {
resched = true;
break;
}
}
iwl_trans_release_nic_access(trans);
if (resched)
cond_resched();
} else {
return -EBUSY;
}
}
return 0;
}
int iwl_trans_pcie_read_mem_no_grab(struct iwl_trans *trans, u32 addr,
void *buf, u32 dwords)
{
struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans);
#define IWL_MAX_HW_ERRS 5
unsigned int num_consec_hw_errors = 0;
u32 offs = 0;
u32 *vals = buf;
lockdep_assert_held(&trans_pcie->reg_lock);
while (offs < dwords) {
unsigned long end = jiffies + HZ / 2;
bool resched = false;
iwl_write32(trans, HBUS_TARG_MEM_RADDR,
addr + 4 * offs);
while (offs < dwords) {
vals[offs] = iwl_read32(trans, HBUS_TARG_MEM_RDAT);
if (iwl_trans_is_hw_error_value(vals[offs]))
num_consec_hw_errors++;
else
num_consec_hw_errors = 0;
if (num_consec_hw_errors >= IWL_MAX_HW_ERRS)
return -EIO;
offs++;
if (time_after(jiffies, end)) {
resched = true;
break;
}
}
if (resched)
iwl_trans_pcie_resched_with_nic_access(trans);
}
return 0;
}
int iwl_trans_pcie_read_config32(struct iwl_trans *trans, u32 ofs,
u32 *val)
{
return pci_read_config_dword(IWL_TRANS_GET_PCIE_TRANS(trans)->pci_dev,
ofs, val);
}
#define IWL_FLUSH_WAIT_MS 2000
int iwl_trans_pcie_rxq_dma_data(struct iwl_trans *trans, int queue,
struct iwl_trans_rxq_dma_data *data)
{
struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans);
if (queue >= trans->info.num_rxqs || !trans_pcie->rxq)
return -EINVAL;
data->fr_bd_cb = trans_pcie->rxq[queue].bd_dma;
data->urbd_stts_wrptr = trans_pcie->rxq[queue].rb_stts_dma;
data->ur_bd_cb = trans_pcie->rxq[queue].used_bd_dma;
data->fr_bd_wid = 0;
return 0;
}
int iwl_trans_pcie_wait_txq_empty(struct iwl_trans *trans, int txq_idx)
{
struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans);
struct iwl_txq *txq;
unsigned long now = jiffies;
bool overflow_tx;
int wr_ptr;
if (test_bit(STATUS_TRANS_DEAD, &trans->status))
return -ENODEV;
if (!test_bit(txq_idx, trans_pcie->txqs.queue_used))
return -EINVAL;
IWL_DEBUG_TX_QUEUES(trans, "Emptying queue %d...\n", txq_idx);
txq = trans_pcie->txqs.txq[txq_idx];
spin_lock_bh(&txq->lock);
overflow_tx = txq->overflow_tx ||
!skb_queue_empty(&txq->overflow_q);
spin_unlock_bh(&txq->lock);
wr_ptr = READ_ONCE(txq->write_ptr);
while ((txq->read_ptr != READ_ONCE(txq->write_ptr) ||
overflow_tx) &&
!time_after(jiffies,
now + msecs_to_jiffies(IWL_FLUSH_WAIT_MS))) {
int write_ptr = READ_ONCE(txq->write_ptr);
if (WARN_ONCE(wr_ptr != write_ptr && !overflow_tx,
"WR pointer moved while flushing %d -> %d\n",
wr_ptr, write_ptr))
return -ETIMEDOUT;
wr_ptr = write_ptr;
usleep_range(1000, 2000);
spin_lock_bh(&txq->lock);
overflow_tx = txq->overflow_tx ||
!skb_queue_empty(&txq->overflow_q);
spin_unlock_bh(&txq->lock);
}
if (txq->read_ptr != txq->write_ptr) {
IWL_ERR(trans,
"fail to flush all tx fifo queues Q %d\n", txq_idx);
iwl_txq_log_scd_error(trans, txq);
return -ETIMEDOUT;
}
IWL_DEBUG_TX_QUEUES(trans, "Queue %d is now empty.\n", txq_idx);
return 0;
}
int iwl_trans_pcie_wait_txqs_empty(struct iwl_trans *trans, u32 txq_bm)
{
struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans);
int cnt;
int ret = 0;
for (cnt = 0;
cnt < trans->mac_cfg->base->num_of_queues;
cnt++) {
if (cnt == trans->conf.cmd_queue)
continue;
if (!test_bit(cnt, trans_pcie->txqs.queue_used))
continue;
if (!(BIT(cnt) & txq_bm))
continue;
ret = iwl_trans_pcie_wait_txq_empty(trans, cnt);
if (ret)
break;
}
return ret;
}
void iwl_trans_pcie_set_bits_mask(struct iwl_trans *trans, u32 reg,
u32 mask, u32 value)
{
struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans);
spin_lock_bh(&trans_pcie->reg_lock);
_iwl_trans_set_bits_mask(trans, reg, mask, value);
spin_unlock_bh(&trans_pcie->reg_lock);
}
static const char *get_csr_string(int cmd)
{
#define IWL_CMD(x) case x: return #x
switch (cmd) {
IWL_CMD(CSR_HW_IF_CONFIG_REG);
IWL_CMD(CSR_INT_COALESCING);
IWL_CMD(CSR_INT);
IWL_CMD(CSR_INT_MASK);
IWL_CMD(CSR_FH_INT_STATUS);
IWL_CMD(CSR_GPIO_IN);
IWL_CMD(CSR_RESET);
IWL_CMD(CSR_GP_CNTRL);
IWL_CMD(CSR_HW_REV);
IWL_CMD(CSR_EEPROM_REG);
IWL_CMD(CSR_EEPROM_GP);
IWL_CMD(CSR_OTP_GP_REG);
IWL_CMD(CSR_GIO_REG);
IWL_CMD(CSR_GP_UCODE_REG);
IWL_CMD(CSR_GP_DRIVER_REG);
IWL_CMD(CSR_UCODE_DRV_GP1);
IWL_CMD(CSR_UCODE_DRV_GP2);
IWL_CMD(CSR_LED_REG);
IWL_CMD(CSR_DRAM_INT_TBL_REG);
IWL_CMD(CSR_GIO_CHICKEN_BITS);
IWL_CMD(CSR_ANA_PLL_CFG);
IWL_CMD(CSR_HW_REV_WA_REG);
IWL_CMD(CSR_MONITOR_STATUS_REG);
IWL_CMD(CSR_DBG_HPET_MEM_REG);
default:
return "UNKNOWN";
}
#undef IWL_CMD
}
void iwl_pcie_dump_csr(struct iwl_trans *trans)
{
int i;
static const u32 csr_tbl[] = {
CSR_HW_IF_CONFIG_REG,
CSR_INT_COALESCING,
CSR_INT,
CSR_INT_MASK,
CSR_FH_INT_STATUS,
CSR_GPIO_IN,
CSR_RESET,
CSR_GP_CNTRL,
CSR_HW_REV,
CSR_EEPROM_REG,
CSR_EEPROM_GP,
CSR_OTP_GP_REG,
CSR_GIO_REG,
CSR_GP_UCODE_REG,
CSR_GP_DRIVER_REG,
CSR_UCODE_DRV_GP1,
CSR_UCODE_DRV_GP2,
CSR_LED_REG,
CSR_DRAM_INT_TBL_REG,
CSR_GIO_CHICKEN_BITS,
CSR_ANA_PLL_CFG,
CSR_MONITOR_STATUS_REG,
CSR_HW_REV_WA_REG,
CSR_DBG_HPET_MEM_REG
};
IWL_ERR(trans, "CSR values:\n");
IWL_ERR(trans, "(2nd byte of CSR_INT_COALESCING is "
"CSR_INT_PERIODIC_REG)\n");
for (i = 0; i < ARRAY_SIZE(csr_tbl); i++) {
IWL_ERR(trans, " %25s: 0X%08x\n",
get_csr_string(csr_tbl[i]),
iwl_read32(trans, csr_tbl[i]));
}
}
#ifdef CONFIG_IWLWIFI_DEBUGFS
#define DEBUGFS_ADD_FILE(name, parent, mode) do { \
debugfs_create_file(#name, mode, parent, trans, \
&iwl_dbgfs_##name##_ops); \
} while (0)
#define DEBUGFS_READ_FILE_OPS(name) \
static const struct file_operations iwl_dbgfs_##name##_ops = { \
.read = iwl_dbgfs_##name##_read, \
.open = simple_open, \
.llseek = generic_file_llseek, \
};
#define DEBUGFS_WRITE_FILE_OPS(name) \
static const struct file_operations iwl_dbgfs_##name##_ops = { \
.write = iwl_dbgfs_##name##_write, \
.open = simple_open, \
.llseek = generic_file_llseek, \
};
#define DEBUGFS_READ_WRITE_FILE_OPS(name) \
static const struct file_operations iwl_dbgfs_##name##_ops = { \
.write = iwl_dbgfs_##name##_write, \
.read = iwl_dbgfs_##name##_read, \
.open = simple_open, \
.llseek = generic_file_llseek, \
};
struct iwl_dbgfs_tx_queue_priv {
struct iwl_trans *trans;
};
struct iwl_dbgfs_tx_queue_state {
loff_t pos;
};
static void *iwl_dbgfs_tx_queue_seq_start(struct seq_file *seq, loff_t *pos)
{
struct iwl_dbgfs_tx_queue_priv *priv = seq->private;
struct iwl_dbgfs_tx_queue_state *state;
if (*pos >= priv->trans->mac_cfg->base->num_of_queues)
return NULL;
state = kmalloc_obj(*state);
if (!state)
return NULL;
state->pos = *pos;
return state;
}
static void *iwl_dbgfs_tx_queue_seq_next(struct seq_file *seq,
void *v, loff_t *pos)
{
struct iwl_dbgfs_tx_queue_priv *priv = seq->private;
struct iwl_dbgfs_tx_queue_state *state = v;
*pos = ++state->pos;
if (*pos >= priv->trans->mac_cfg->base->num_of_queues)
return NULL;
return state;
}
static void iwl_dbgfs_tx_queue_seq_stop(struct seq_file *seq, void *v)
{
kfree(v);
}
static int iwl_dbgfs_tx_queue_seq_show(struct seq_file *seq, void *v)
{
struct iwl_dbgfs_tx_queue_priv *priv = seq->private;
struct iwl_dbgfs_tx_queue_state *state = v;
struct iwl_trans *trans = priv->trans;
struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans);
struct iwl_txq *txq = trans_pcie->txqs.txq[state->pos];
seq_printf(seq, "hwq %.3u: used=%d stopped=%d ",
(unsigned int)state->pos,
!!test_bit(state->pos, trans_pcie->txqs.queue_used),
!!test_bit(state->pos, trans_pcie->txqs.queue_stopped));
if (txq)
seq_printf(seq,
"read=%u write=%u need_update=%d frozen=%d n_window=%d ampdu=%d",
txq->read_ptr, txq->write_ptr,
txq->need_update, txq->frozen,
txq->n_window, txq->ampdu);
else
seq_puts(seq, "(unallocated)");
if (state->pos == trans->conf.cmd_queue)
seq_puts(seq, " (HCMD)");
seq_puts(seq, "\n");
return 0;
}
static const struct seq_operations iwl_dbgfs_tx_queue_seq_ops = {
.start = iwl_dbgfs_tx_queue_seq_start,
.next = iwl_dbgfs_tx_queue_seq_next,
.stop = iwl_dbgfs_tx_queue_seq_stop,
.show = iwl_dbgfs_tx_queue_seq_show,
};
static int iwl_dbgfs_tx_queue_open(struct inode *inode, struct file *filp)
{
struct iwl_dbgfs_tx_queue_priv *priv;
priv = __seq_open_private(filp, &iwl_dbgfs_tx_queue_seq_ops,
sizeof(*priv));
if (!priv)
return -ENOMEM;
priv->trans = inode->i_private;
return 0;
}
static ssize_t iwl_dbgfs_rx_queue_read(struct file *file,
char __user *user_buf,
size_t count, loff_t *ppos)
{
struct iwl_trans *trans = file->private_data;
struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans);
char *buf;
int pos = 0, i, ret;
size_t bufsz;
bufsz = sizeof(char) * 121 * trans->info.num_rxqs;
if (!trans_pcie->rxq)
return -EAGAIN;
buf = kzalloc(bufsz, GFP_KERNEL);
if (!buf)
return -ENOMEM;
for (i = 0; i < trans->info.num_rxqs && pos < bufsz; i++) {
struct iwl_rxq *rxq = &trans_pcie->rxq[i];
spin_lock_bh(&rxq->lock);
pos += scnprintf(buf + pos, bufsz - pos, "queue#: %2d\n",
i);
pos += scnprintf(buf + pos, bufsz - pos, "\tread: %u\n",
rxq->read);
pos += scnprintf(buf + pos, bufsz - pos, "\twrite: %u\n",
rxq->write);
pos += scnprintf(buf + pos, bufsz - pos, "\twrite_actual: %u\n",
rxq->write_actual);
pos += scnprintf(buf + pos, bufsz - pos, "\tneed_update: %2d\n",
rxq->need_update);
pos += scnprintf(buf + pos, bufsz - pos, "\tfree_count: %u\n",
rxq->free_count);
if (rxq->rb_stts) {
u32 r = iwl_get_closed_rb_stts(trans, rxq);
pos += scnprintf(buf + pos, bufsz - pos,
"\tclosed_rb_num: %u\n", r);
} else {
pos += scnprintf(buf + pos, bufsz - pos,
"\tclosed_rb_num: Not Allocated\n");
}
spin_unlock_bh(&rxq->lock);
}
ret = simple_read_from_buffer(user_buf, count, ppos, buf, pos);
kfree(buf);
return ret;
}
static ssize_t iwl_dbgfs_interrupt_read(struct file *file,
char __user *user_buf,
size_t count, loff_t *ppos)
{
struct iwl_trans *trans = file->private_data;
struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans);
struct isr_statistics *isr_stats = &trans_pcie->isr_stats;
int pos = 0;
char *buf;
int bufsz = 24 * 64;
ssize_t ret;
buf = kzalloc(bufsz, GFP_KERNEL);
if (!buf)
return -ENOMEM;
pos += scnprintf(buf + pos, bufsz - pos,
"Interrupt Statistics Report:\n");
pos += scnprintf(buf + pos, bufsz - pos, "HW Error:\t\t\t %u\n",
isr_stats->hw);
pos += scnprintf(buf + pos, bufsz - pos, "SW Error:\t\t\t %u\n",
isr_stats->sw);
if (isr_stats->sw || isr_stats->hw) {
pos += scnprintf(buf + pos, bufsz - pos,
"\tLast Restarting Code: 0x%X\n",
isr_stats->err_code);
}
#ifdef CONFIG_IWLWIFI_DEBUG
pos += scnprintf(buf + pos, bufsz - pos, "Frame transmitted:\t\t %u\n",
isr_stats->sch);
pos += scnprintf(buf + pos, bufsz - pos, "Alive interrupt:\t\t %u\n",
isr_stats->alive);
#endif
pos += scnprintf(buf + pos, bufsz - pos,
"HW RF KILL switch toggled:\t %u\n", isr_stats->rfkill);
pos += scnprintf(buf + pos, bufsz - pos, "CT KILL:\t\t\t %u\n",
isr_stats->ctkill);
pos += scnprintf(buf + pos, bufsz - pos, "Wakeup Interrupt:\t\t %u\n",
isr_stats->wakeup);
pos += scnprintf(buf + pos, bufsz - pos,
"Rx command responses:\t\t %u\n", isr_stats->rx);
pos += scnprintf(buf + pos, bufsz - pos, "Tx/FH interrupt:\t\t %u\n",
isr_stats->tx);
pos += scnprintf(buf + pos, bufsz - pos, "Unexpected INTA:\t\t %u\n",
isr_stats->unhandled);
ret = simple_read_from_buffer(user_buf, count, ppos, buf, pos);
kfree(buf);
return ret;
}
static ssize_t iwl_dbgfs_interrupt_write(struct file *file,
const char __user *user_buf,
size_t count, loff_t *ppos)
{
struct iwl_trans *trans = file->private_data;
struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans);
struct isr_statistics *isr_stats = &trans_pcie->isr_stats;
u32 reset_flag;
int ret;
ret = kstrtou32_from_user(user_buf, count, 16, &reset_flag);
if (ret)
return ret;
if (reset_flag == 0)
memset(isr_stats, 0, sizeof(*isr_stats));
return count;
}
static ssize_t iwl_dbgfs_csr_write(struct file *file,
const char __user *user_buf,
size_t count, loff_t *ppos)
{
struct iwl_trans *trans = file->private_data;
iwl_pcie_dump_csr(trans);
return count;
}
static ssize_t iwl_dbgfs_fh_reg_read(struct file *file,
char __user *user_buf,
size_t count, loff_t *ppos)
{
struct iwl_trans *trans = file->private_data;
char *buf = NULL;
ssize_t ret;
ret = iwl_dump_fh(trans, &buf);
if (ret < 0)
return ret;
if (!buf)
return -EINVAL;
ret = simple_read_from_buffer(user_buf, count, ppos, buf, ret);
kfree(buf);
return ret;
}
static ssize_t iwl_dbgfs_rfkill_read(struct file *file,
char __user *user_buf,
size_t count, loff_t *ppos)
{
struct iwl_trans *trans = file->private_data;
struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans);
char buf[100];
int pos;
pos = scnprintf(buf, sizeof(buf), "debug: %d\nhw: %d\n",
trans_pcie->debug_rfkill,
!(iwl_read32(trans, CSR_GP_CNTRL) &
CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW));
return simple_read_from_buffer(user_buf, count, ppos, buf, pos);
}
static ssize_t iwl_dbgfs_rfkill_write(struct file *file,
const char __user *user_buf,
size_t count, loff_t *ppos)
{
struct iwl_trans *trans = file->private_data;
struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans);
bool new_value;
int ret;
ret = kstrtobool_from_user(user_buf, count, &new_value);
if (ret)
return ret;
if (new_value == trans_pcie->debug_rfkill)
return count;
IWL_WARN(trans, "changing debug rfkill %d->%d\n",
trans_pcie->debug_rfkill, new_value);
trans_pcie->debug_rfkill = new_value;
iwl_pcie_handle_rfkill_irq(trans, false);
return count;
}
static int iwl_dbgfs_monitor_data_open(struct inode *inode,
struct file *file)
{
struct iwl_trans *trans = inode->i_private;
struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans);
if (!trans->dbg.dest_tlv ||
trans->dbg.dest_tlv->monitor_mode != EXTERNAL_MODE) {
IWL_ERR(trans, "Debug destination is not set to DRAM\n");
return -ENOENT;
}
if (trans_pcie->fw_mon_data.state != IWL_FW_MON_DBGFS_STATE_CLOSED)
return -EBUSY;
trans_pcie->fw_mon_data.state = IWL_FW_MON_DBGFS_STATE_OPEN;
return simple_open(inode, file);
}
static int iwl_dbgfs_monitor_data_release(struct inode *inode,
struct file *file)
{
struct iwl_trans_pcie *trans_pcie =
IWL_TRANS_GET_PCIE_TRANS(inode->i_private);
if (trans_pcie->fw_mon_data.state == IWL_FW_MON_DBGFS_STATE_OPEN)
trans_pcie->fw_mon_data.state = IWL_FW_MON_DBGFS_STATE_CLOSED;
return 0;
}
static bool iwl_write_to_user_buf(char __user *user_buf, ssize_t count,
void *buf, ssize_t *size,
ssize_t *bytes_copied)
{
ssize_t buf_size_left = count - *bytes_copied;
buf_size_left = buf_size_left - (buf_size_left % sizeof(u32));
if (*size > buf_size_left)
*size = buf_size_left;
*size -= copy_to_user(user_buf, buf, *size);
*bytes_copied += *size;
if (buf_size_left == *size)
return true;
return false;
}
static ssize_t iwl_dbgfs_monitor_data_read(struct file *file,
char __user *user_buf,
size_t count, loff_t *ppos)
{
struct iwl_trans *trans = file->private_data;
struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans);
u8 *cpu_addr = (void *)trans->dbg.fw_mon.block, *curr_buf;
struct cont_rec *data = &trans_pcie->fw_mon_data;
u32 write_ptr_addr, wrap_cnt_addr, write_ptr, wrap_cnt;
ssize_t size, bytes_copied = 0;
bool b_full;
if (trans->dbg.dest_tlv) {
write_ptr_addr =
le32_to_cpu(trans->dbg.dest_tlv->write_ptr_reg);
wrap_cnt_addr = le32_to_cpu(trans->dbg.dest_tlv->wrap_count);
} else {
write_ptr_addr = MON_BUFF_WRPTR;
wrap_cnt_addr = MON_BUFF_CYCLE_CNT;
}
if (unlikely(!trans->dbg.rec_on))
return 0;
mutex_lock(&data->mutex);
if (data->state ==
IWL_FW_MON_DBGFS_STATE_DISABLED) {
mutex_unlock(&data->mutex);
return 0;
}
write_ptr = iwl_read_prph(trans, write_ptr_addr) * sizeof(u32);
wrap_cnt = iwl_read_prph(trans, wrap_cnt_addr);
if (data->prev_wrap_cnt == wrap_cnt) {
size = write_ptr - data->prev_wr_ptr;
curr_buf = cpu_addr + data->prev_wr_ptr;
b_full = iwl_write_to_user_buf(user_buf, count,
curr_buf, &size,
&bytes_copied);
data->prev_wr_ptr += size;
} else if (data->prev_wrap_cnt == wrap_cnt - 1 &&
write_ptr < data->prev_wr_ptr) {
size = trans->dbg.fw_mon.size - data->prev_wr_ptr;
curr_buf = cpu_addr + data->prev_wr_ptr;
b_full = iwl_write_to_user_buf(user_buf, count,
curr_buf, &size,
&bytes_copied);
data->prev_wr_ptr += size;
if (!b_full) {
size = write_ptr;
b_full = iwl_write_to_user_buf(user_buf, count,
cpu_addr, &size,
&bytes_copied);
data->prev_wr_ptr = size;
data->prev_wrap_cnt++;
}
} else {
if (data->prev_wrap_cnt == wrap_cnt - 1 &&
write_ptr > data->prev_wr_ptr)
IWL_WARN(trans,
"write pointer passed previous write pointer, start copying from the beginning\n");
else if (!unlikely(data->prev_wrap_cnt == 0 &&
data->prev_wr_ptr == 0))
IWL_WARN(trans,
"monitor data is out of sync, start copying from the beginning\n");
size = write_ptr;
b_full = iwl_write_to_user_buf(user_buf, count,
cpu_addr, &size,
&bytes_copied);
data->prev_wr_ptr = size;
data->prev_wrap_cnt = wrap_cnt;
}
mutex_unlock(&data->mutex);
return bytes_copied;
}
static ssize_t iwl_dbgfs_rf_read(struct file *file,
char __user *user_buf,
size_t count, loff_t *ppos)
{
struct iwl_trans *trans = file->private_data;
struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans);
if (!trans_pcie->rf_name[0])
return -ENODEV;
return simple_read_from_buffer(user_buf, count, ppos,
trans_pcie->rf_name,
strlen(trans_pcie->rf_name));
}
static ssize_t iwl_dbgfs_reset_write(struct file *file,
const char __user *user_buf,
size_t count, loff_t *ppos)
{
struct iwl_trans *trans = file->private_data;
static const char * const modes[] = {
[IWL_RESET_MODE_SW_RESET] = "sw",
[IWL_RESET_MODE_REPROBE] = "reprobe",
[IWL_RESET_MODE_TOP_RESET] = "top",
[IWL_RESET_MODE_REMOVE_ONLY] = "remove",
[IWL_RESET_MODE_RESCAN] = "rescan",
[IWL_RESET_MODE_FUNC_RESET] = "function",
[IWL_RESET_MODE_PROD_RESET] = "product",
};
char buf[10] = {};
int mode;
if (count > sizeof(buf) - 1)
return -EINVAL;
if (copy_from_user(buf, user_buf, count))
return -EFAULT;
mode = sysfs_match_string(modes, buf);
if (mode < 0)
return mode;
if (mode < IWL_RESET_MODE_REMOVE_ONLY) {
if (!test_bit(STATUS_DEVICE_ENABLED, &trans->status))
return -EINVAL;
if (mode == IWL_RESET_MODE_TOP_RESET) {
if (!iwl_trans_is_top_reset_supported(trans))
return -EINVAL;
trans->request_top_reset = 1;
}
iwl_trans_fw_error(trans, IWL_ERR_TYPE_DEBUGFS);
return count;
}
iwl_trans_pcie_reset(trans, mode);
return count;
}
DEBUGFS_READ_WRITE_FILE_OPS(interrupt);
DEBUGFS_READ_FILE_OPS(fh_reg);
DEBUGFS_READ_FILE_OPS(rx_queue);
DEBUGFS_WRITE_FILE_OPS(csr);
DEBUGFS_READ_WRITE_FILE_OPS(rfkill);
DEBUGFS_READ_FILE_OPS(rf);
DEBUGFS_WRITE_FILE_OPS(reset);
static const struct file_operations iwl_dbgfs_tx_queue_ops = {
.owner = THIS_MODULE,
.open = iwl_dbgfs_tx_queue_open,
.read = seq_read,
.llseek = seq_lseek,
.release = seq_release_private,
};
static const struct file_operations iwl_dbgfs_monitor_data_ops = {
.read = iwl_dbgfs_monitor_data_read,
.open = iwl_dbgfs_monitor_data_open,
.release = iwl_dbgfs_monitor_data_release,
};
void iwl_trans_pcie_dbgfs_register(struct iwl_trans *trans)
{
struct dentry *dir = trans->dbgfs_dir;
DEBUGFS_ADD_FILE(rx_queue, dir, 0400);
DEBUGFS_ADD_FILE(tx_queue, dir, 0400);
DEBUGFS_ADD_FILE(interrupt, dir, 0600);
DEBUGFS_ADD_FILE(csr, dir, 0200);
DEBUGFS_ADD_FILE(fh_reg, dir, 0400);
DEBUGFS_ADD_FILE(rfkill, dir, 0600);
DEBUGFS_ADD_FILE(monitor_data, dir, 0400);
DEBUGFS_ADD_FILE(rf, dir, 0400);
DEBUGFS_ADD_FILE(reset, dir, 0200);
}
void iwl_trans_pcie_debugfs_cleanup(struct iwl_trans *trans)
{
struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans);
struct cont_rec *data = &trans_pcie->fw_mon_data;
mutex_lock(&data->mutex);
data->state = IWL_FW_MON_DBGFS_STATE_DISABLED;
mutex_unlock(&data->mutex);
}
#endif
static u32 iwl_trans_pcie_get_cmdlen(struct iwl_trans *trans, void *tfd)
{
struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans);
u32 cmdlen = 0;
int i;
for (i = 0; i < trans_pcie->txqs.tfd.max_tbs; i++)
cmdlen += iwl_txq_gen1_tfd_tb_get_len(trans, tfd, i);
return cmdlen;
}
static u32 iwl_trans_pcie_dump_rbs(struct iwl_trans *trans,
struct iwl_fw_error_dump_data **data,
int allocated_rb_nums)
{
struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans);
int max_len = trans_pcie->rx_buf_bytes;
struct iwl_rxq *rxq = &trans_pcie->rxq[0];
u32 i, r, j, rb_len = 0;
spin_lock_bh(&rxq->lock);
r = iwl_get_closed_rb_stts(trans, rxq);
for (i = rxq->read, j = 0;
i != r && j < allocated_rb_nums;
i = (i + 1) & RX_QUEUE_MASK, j++) {
struct iwl_rx_mem_buffer *rxb = rxq->queue[i];
struct iwl_fw_error_dump_rb *rb;
dma_sync_single_for_cpu(trans->dev, rxb->page_dma,
max_len, DMA_FROM_DEVICE);
rb_len += sizeof(**data) + sizeof(*rb) + max_len;
(*data)->type = cpu_to_le32(IWL_FW_ERROR_DUMP_RB);
(*data)->len = cpu_to_le32(sizeof(*rb) + max_len);
rb = (void *)(*data)->data;
rb->index = cpu_to_le32(i);
memcpy(rb->data, page_address(rxb->page), max_len);
*data = iwl_fw_error_next_data(*data);
}
spin_unlock_bh(&rxq->lock);
return rb_len;
}
#define IWL_CSR_TO_DUMP (0x250)
static u32 iwl_trans_pcie_dump_csr(struct iwl_trans *trans,
struct iwl_fw_error_dump_data **data)
{
u32 csr_len = sizeof(**data) + IWL_CSR_TO_DUMP;
__le32 *val;
int i;
(*data)->type = cpu_to_le32(IWL_FW_ERROR_DUMP_CSR);
(*data)->len = cpu_to_le32(IWL_CSR_TO_DUMP);
val = (void *)(*data)->data;
for (i = 0; i < IWL_CSR_TO_DUMP; i += 4)
*val++ = cpu_to_le32(iwl_trans_pcie_read32(trans, i));
*data = iwl_fw_error_next_data(*data);
return csr_len;
}
static u32 iwl_trans_pcie_fh_regs_dump(struct iwl_trans *trans,
struct iwl_fw_error_dump_data **data)
{
u32 fh_regs_len = FH_MEM_UPPER_BOUND - FH_MEM_LOWER_BOUND;
__le32 *val;
int i;
if (!iwl_trans_grab_nic_access(trans))
return 0;
(*data)->type = cpu_to_le32(IWL_FW_ERROR_DUMP_FH_REGS);
(*data)->len = cpu_to_le32(fh_regs_len);
val = (void *)(*data)->data;
if (!trans->mac_cfg->gen2)
for (i = FH_MEM_LOWER_BOUND; i < FH_MEM_UPPER_BOUND;
i += sizeof(u32))
*val++ = cpu_to_le32(iwl_trans_pcie_read32(trans, i));
else
for (i = iwl_umac_prph(trans, FH_MEM_LOWER_BOUND_GEN2);
i < iwl_umac_prph(trans, FH_MEM_UPPER_BOUND_GEN2);
i += sizeof(u32))
*val++ = cpu_to_le32(iwl_trans_pcie_read_prph(trans,
i));
iwl_trans_release_nic_access(trans);
*data = iwl_fw_error_next_data(*data);
return sizeof(**data) + fh_regs_len;
}
static u32
iwl_trans_pci_dump_marbh_monitor(struct iwl_trans *trans,
struct iwl_fw_error_dump_fw_mon *fw_mon_data,
u32 monitor_len)
{
u32 buf_size_in_dwords = (monitor_len >> 2);
u32 *buffer = (u32 *)fw_mon_data->data;
u32 i;
if (!iwl_trans_grab_nic_access(trans))
return 0;
iwl_write_umac_prph_no_grab(trans, MON_DMARB_RD_CTL_ADDR, 0x1);
for (i = 0; i < buf_size_in_dwords; i++)
buffer[i] = iwl_read_umac_prph_no_grab(trans,
MON_DMARB_RD_DATA_ADDR);
iwl_write_umac_prph_no_grab(trans, MON_DMARB_RD_CTL_ADDR, 0x0);
iwl_trans_release_nic_access(trans);
return monitor_len;
}
static void
iwl_trans_pcie_dump_pointers(struct iwl_trans *trans,
struct iwl_fw_error_dump_fw_mon *fw_mon_data)
{
u32 base, base_high, write_ptr, write_ptr_val, wrap_cnt;
if (trans->mac_cfg->device_family >= IWL_DEVICE_FAMILY_AX210) {
base = DBGC_CUR_DBGBUF_BASE_ADDR_LSB;
base_high = DBGC_CUR_DBGBUF_BASE_ADDR_MSB;
write_ptr = DBGC_CUR_DBGBUF_STATUS;
wrap_cnt = DBGC_DBGBUF_WRAP_AROUND;
} else if (trans->dbg.dest_tlv) {
write_ptr = le32_to_cpu(trans->dbg.dest_tlv->write_ptr_reg);
wrap_cnt = le32_to_cpu(trans->dbg.dest_tlv->wrap_count);
base = le32_to_cpu(trans->dbg.dest_tlv->base_reg);
} else {
base = MON_BUFF_BASE_ADDR;
write_ptr = MON_BUFF_WRPTR;
wrap_cnt = MON_BUFF_CYCLE_CNT;
}
write_ptr_val = iwl_read_prph(trans, write_ptr);
fw_mon_data->fw_mon_cycle_cnt =
cpu_to_le32(iwl_read_prph(trans, wrap_cnt));
fw_mon_data->fw_mon_base_ptr =
cpu_to_le32(iwl_read_prph(trans, base));
if (trans->mac_cfg->device_family >= IWL_DEVICE_FAMILY_AX210) {
fw_mon_data->fw_mon_base_high_ptr =
cpu_to_le32(iwl_read_prph(trans, base_high));
write_ptr_val &= DBGC_CUR_DBGBUF_STATUS_OFFSET_MSK;
write_ptr_val >>= 2;
}
fw_mon_data->fw_mon_wr_ptr = cpu_to_le32(write_ptr_val);
}
static u32
iwl_trans_pcie_dump_monitor(struct iwl_trans *trans,
struct iwl_fw_error_dump_data **data,
u32 monitor_len)
{
struct iwl_dram_data *fw_mon = &trans->dbg.fw_mon;
u32 len = 0;
if (trans->dbg.dest_tlv ||
(fw_mon->size &&
(trans->mac_cfg->device_family == IWL_DEVICE_FAMILY_7000 ||
trans->mac_cfg->device_family >= IWL_DEVICE_FAMILY_AX210))) {
struct iwl_fw_error_dump_fw_mon *fw_mon_data;
(*data)->type = cpu_to_le32(IWL_FW_ERROR_DUMP_FW_MONITOR);
fw_mon_data = (void *)(*data)->data;
iwl_trans_pcie_dump_pointers(trans, fw_mon_data);
len += sizeof(**data) + sizeof(*fw_mon_data);
if (fw_mon->size) {
memcpy(fw_mon_data->data, fw_mon->block, fw_mon->size);
monitor_len = fw_mon->size;
} else if (trans->dbg.dest_tlv->monitor_mode == SMEM_MODE) {
u32 base = le32_to_cpu(fw_mon_data->fw_mon_base_ptr);
if (trans->dbg.dest_tlv->version) {
base = (iwl_read_prph(trans, base) &
IWL_LDBG_M2S_BUF_BA_MSK) <<
trans->dbg.dest_tlv->base_shift;
base *= IWL_M2S_UNIT_SIZE;
base += trans->mac_cfg->base->smem_offset;
} else {
base = iwl_read_prph(trans, base) <<
trans->dbg.dest_tlv->base_shift;
}
iwl_trans_pcie_read_mem(trans, base, fw_mon_data->data,
monitor_len / sizeof(u32));
} else if (trans->dbg.dest_tlv->monitor_mode == MARBH_MODE) {
monitor_len =
iwl_trans_pci_dump_marbh_monitor(trans,
fw_mon_data,
monitor_len);
} else {
monitor_len = 0;
}
len += monitor_len;
(*data)->len = cpu_to_le32(monitor_len + sizeof(*fw_mon_data));
}
return len;
}
static int iwl_trans_get_fw_monitor_len(struct iwl_trans *trans, u32 *len)
{
if (trans->dbg.fw_mon.size) {
*len += sizeof(struct iwl_fw_error_dump_data) +
sizeof(struct iwl_fw_error_dump_fw_mon) +
trans->dbg.fw_mon.size;
return trans->dbg.fw_mon.size;
} else if (trans->dbg.dest_tlv) {
u32 base, end, cfg_reg, monitor_len;
if (trans->dbg.dest_tlv->version == 1) {
cfg_reg = le32_to_cpu(trans->dbg.dest_tlv->base_reg);
cfg_reg = iwl_read_prph(trans, cfg_reg);
base = (cfg_reg & IWL_LDBG_M2S_BUF_BA_MSK) <<
trans->dbg.dest_tlv->base_shift;
base *= IWL_M2S_UNIT_SIZE;
base += trans->mac_cfg->base->smem_offset;
monitor_len =
(cfg_reg & IWL_LDBG_M2S_BUF_SIZE_MSK) >>
trans->dbg.dest_tlv->end_shift;
monitor_len *= IWL_M2S_UNIT_SIZE;
} else {
base = le32_to_cpu(trans->dbg.dest_tlv->base_reg);
end = le32_to_cpu(trans->dbg.dest_tlv->end_reg);
base = iwl_read_prph(trans, base) <<
trans->dbg.dest_tlv->base_shift;
end = iwl_read_prph(trans, end) <<
trans->dbg.dest_tlv->end_shift;
if (trans->mac_cfg->device_family >=
IWL_DEVICE_FAMILY_8000 ||
trans->dbg.dest_tlv->monitor_mode == MARBH_MODE)
end += (1 << trans->dbg.dest_tlv->end_shift);
monitor_len = end - base;
}
*len += sizeof(struct iwl_fw_error_dump_data) +
sizeof(struct iwl_fw_error_dump_fw_mon) +
monitor_len;
return monitor_len;
}
return 0;
}
struct iwl_trans_dump_data *
iwl_trans_pcie_dump_data(struct iwl_trans *trans, u32 dump_mask,
const struct iwl_dump_sanitize_ops *sanitize_ops,
void *sanitize_ctx)
{
struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans);
struct iwl_fw_error_dump_data *data;
struct iwl_txq *cmdq = trans_pcie->txqs.txq[trans->conf.cmd_queue];
struct iwl_fw_error_dump_txcmd *txcmd;
struct iwl_trans_dump_data *dump_data;
u32 len, num_rbs = 0, monitor_len = 0;
int i, ptr;
bool dump_rbs = iwl_trans_is_fw_error(trans) &&
!trans->mac_cfg->mq_rx_supported &&
dump_mask & BIT(IWL_FW_ERROR_DUMP_RB);
if (!dump_mask)
return NULL;
len = sizeof(*dump_data);
if (dump_mask & BIT(IWL_FW_ERROR_DUMP_TXCMD) && cmdq)
len += sizeof(*data) +
cmdq->n_window * (sizeof(*txcmd) +
TFD_MAX_PAYLOAD_SIZE);
if (dump_mask & BIT(IWL_FW_ERROR_DUMP_FW_MONITOR))
monitor_len = iwl_trans_get_fw_monitor_len(trans, &len);
if (dump_mask & BIT(IWL_FW_ERROR_DUMP_CSR))
len += sizeof(*data) + IWL_CSR_TO_DUMP;
if (dump_mask & BIT(IWL_FW_ERROR_DUMP_FH_REGS)) {
if (trans->mac_cfg->gen2)
len += sizeof(*data) +
(iwl_umac_prph(trans, FH_MEM_UPPER_BOUND_GEN2) -
iwl_umac_prph(trans, FH_MEM_LOWER_BOUND_GEN2));
else
len += sizeof(*data) +
(FH_MEM_UPPER_BOUND -
FH_MEM_LOWER_BOUND);
}
if (dump_rbs) {
struct iwl_rxq *rxq = &trans_pcie->rxq[0];
spin_lock_bh(&rxq->lock);
num_rbs = iwl_get_closed_rb_stts(trans, rxq);
num_rbs = (num_rbs - rxq->read) & RX_QUEUE_MASK;
spin_unlock_bh(&rxq->lock);
len += num_rbs * (sizeof(*data) +
sizeof(struct iwl_fw_error_dump_rb) +
(PAGE_SIZE << trans_pcie->rx_page_order));
}
if (trans->mac_cfg->gen2 && dump_mask & BIT(IWL_FW_ERROR_DUMP_PAGING))
for (i = 0; i < trans->init_dram.paging_cnt; i++)
len += sizeof(*data) +
sizeof(struct iwl_fw_error_dump_paging) +
trans->init_dram.paging[i].size;
dump_data = vzalloc(len);
if (!dump_data)
return NULL;
len = 0;
data = (void *)dump_data->data;
if (dump_mask & BIT(IWL_FW_ERROR_DUMP_TXCMD) && cmdq) {
u16 tfd_size = trans_pcie->txqs.tfd.size;
data->type = cpu_to_le32(IWL_FW_ERROR_DUMP_TXCMD);
txcmd = (void *)data->data;
spin_lock_bh(&cmdq->lock);
ptr = cmdq->write_ptr;
for (i = 0; i < cmdq->n_window; i++) {
u8 idx = iwl_txq_get_cmd_index(cmdq, ptr);
u8 tfdidx;
u32 caplen, cmdlen;
if (trans->mac_cfg->gen2)
tfdidx = idx;
else
tfdidx = ptr;
cmdlen = iwl_trans_pcie_get_cmdlen(trans,
(u8 *)cmdq->tfds +
tfd_size * tfdidx);
caplen = min_t(u32, TFD_MAX_PAYLOAD_SIZE, cmdlen);
if (cmdlen) {
len += sizeof(*txcmd) + caplen;
txcmd->cmdlen = cpu_to_le32(cmdlen);
txcmd->caplen = cpu_to_le32(caplen);
memcpy(txcmd->data, cmdq->entries[idx].cmd,
caplen);
if (sanitize_ops && sanitize_ops->frob_hcmd)
sanitize_ops->frob_hcmd(sanitize_ctx,
txcmd->data,
caplen);
txcmd = (void *)((u8 *)txcmd->data + caplen);
}
ptr = iwl_txq_dec_wrap(trans, ptr);
}
spin_unlock_bh(&cmdq->lock);
data->len = cpu_to_le32(len);
len += sizeof(*data);
data = iwl_fw_error_next_data(data);
}
if (dump_mask & BIT(IWL_FW_ERROR_DUMP_CSR))
len += iwl_trans_pcie_dump_csr(trans, &data);
if (dump_mask & BIT(IWL_FW_ERROR_DUMP_FH_REGS))
len += iwl_trans_pcie_fh_regs_dump(trans, &data);
if (dump_rbs)
len += iwl_trans_pcie_dump_rbs(trans, &data, num_rbs);
if (trans->mac_cfg->gen2 &&
dump_mask & BIT(IWL_FW_ERROR_DUMP_PAGING)) {
for (i = 0; i < trans->init_dram.paging_cnt; i++) {
struct iwl_fw_error_dump_paging *paging;
u32 page_len = trans->init_dram.paging[i].size;
data->type = cpu_to_le32(IWL_FW_ERROR_DUMP_PAGING);
data->len = cpu_to_le32(sizeof(*paging) + page_len);
paging = (void *)data->data;
paging->index = cpu_to_le32(i);
memcpy(paging->data,
trans->init_dram.paging[i].block, page_len);
data = iwl_fw_error_next_data(data);
len += sizeof(*data) + sizeof(*paging) + page_len;
}
}
if (dump_mask & BIT(IWL_FW_ERROR_DUMP_FW_MONITOR))
len += iwl_trans_pcie_dump_monitor(trans, &data, monitor_len);
dump_data->len = len;
return dump_data;
}
void iwl_trans_pci_interrupts(struct iwl_trans *trans, bool enable)
{
if (enable)
iwl_enable_interrupts(trans);
else
iwl_disable_interrupts(trans);
}
void iwl_trans_pcie_sync_nmi(struct iwl_trans *trans)
{
u32 inta_addr, sw_err_bit;
struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans);
if (trans_pcie->msix_enabled) {
inta_addr = CSR_MSIX_HW_INT_CAUSES_AD;
if (trans->mac_cfg->device_family >= IWL_DEVICE_FAMILY_BZ)
sw_err_bit = MSIX_HW_INT_CAUSES_REG_SW_ERR_BZ;
else
sw_err_bit = MSIX_HW_INT_CAUSES_REG_SW_ERR;
} else {
inta_addr = CSR_INT;
sw_err_bit = CSR_INT_BIT_SW_ERR;
}
iwl_trans_sync_nmi_with_addr(trans, inta_addr, sw_err_bit);
}
static int iwl_trans_pcie_alloc_txcmd_pool(struct iwl_trans *trans)
{
struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans);
unsigned int txcmd_size, txcmd_align;
if (!trans->mac_cfg->gen2) {
txcmd_size = sizeof(struct iwl_tx_cmd_v6);
txcmd_align = sizeof(void *);
} else if (trans->mac_cfg->device_family < IWL_DEVICE_FAMILY_AX210) {
txcmd_size = sizeof(struct iwl_tx_cmd_v9);
txcmd_align = 64;
} else {
txcmd_size = sizeof(struct iwl_tx_cmd);
txcmd_align = 128;
}
txcmd_size += sizeof(struct iwl_cmd_header);
txcmd_size += 36;
if (WARN_ON((trans->mac_cfg->gen2 && txcmd_size >= txcmd_align)))
return -EINVAL;
snprintf(trans_pcie->dev_cmd_pool_name,
sizeof(trans_pcie->dev_cmd_pool_name),
"iwl_cmd_pool:%s", dev_name(trans->dev));
trans_pcie->dev_cmd_pool =
kmem_cache_create(trans_pcie->dev_cmd_pool_name,
txcmd_size, txcmd_align,
SLAB_HWCACHE_ALIGN, NULL);
if (!trans_pcie->dev_cmd_pool)
return -ENOMEM;
return 0;
}
static struct iwl_trans *
iwl_trans_pcie_alloc(struct pci_dev *pdev,
const struct iwl_mac_cfg *mac_cfg,
struct iwl_trans_info *info, u8 __iomem *hw_base)
{
struct iwl_trans_pcie *trans_pcie, **priv;
struct iwl_trans *trans;
unsigned int bc_tbl_n_entries;
int ret, addr_size;
trans = iwl_trans_alloc(sizeof(struct iwl_trans_pcie), &pdev->dev,
mac_cfg);
if (!trans)
return ERR_PTR(-ENOMEM);
trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans);
trans_pcie->hw_base = hw_base;
init_waitqueue_head(&trans_pcie->wait_command_queue);
ret = iwl_trans_pcie_alloc_txcmd_pool(trans);
if (ret)
goto out_free_trans;
if (trans->mac_cfg->gen2) {
trans_pcie->txqs.tfd.addr_size = 64;
trans_pcie->txqs.tfd.max_tbs = IWL_TFH_NUM_TBS;
trans_pcie->txqs.tfd.size = sizeof(struct iwl_tfh_tfd);
} else {
trans_pcie->txqs.tfd.addr_size = 36;
trans_pcie->txqs.tfd.max_tbs = IWL_NUM_OF_TBS;
trans_pcie->txqs.tfd.size = sizeof(struct iwl_tfd);
}
trans_pcie->supported_dma_mask = (u32)DMA_BIT_MASK(12);
if (trans->mac_cfg->device_family >= IWL_DEVICE_FAMILY_AX210)
trans_pcie->supported_dma_mask = (u32)DMA_BIT_MASK(11);
info->max_skb_frags = IWL_TRANS_PCIE_MAX_FRAGS(trans_pcie);
trans_pcie->txqs.tso_hdr_page = alloc_percpu(struct iwl_tso_hdr_page);
if (!trans_pcie->txqs.tso_hdr_page) {
ret = -ENOMEM;
goto out_free_txcmd_pool;
}
if (trans->mac_cfg->device_family >= IWL_DEVICE_FAMILY_BZ)
bc_tbl_n_entries = TFD_QUEUE_BC_SIZE_BZ;
else if (trans->mac_cfg->device_family >= IWL_DEVICE_FAMILY_AX210)
bc_tbl_n_entries = TFD_QUEUE_BC_SIZE_AX210;
else
bc_tbl_n_entries = TFD_QUEUE_BC_SIZE;
trans_pcie->txqs.bc_tbl_size =
sizeof(struct iwl_bc_tbl_entry) * bc_tbl_n_entries;
if (trans->mac_cfg->gen2) {
trans_pcie->txqs.bc_pool =
dmam_pool_create("iwlwifi:bc", trans->dev,
trans_pcie->txqs.bc_tbl_size,
256, 0);
if (!trans_pcie->txqs.bc_pool) {
ret = -ENOMEM;
goto out_free_tso;
}
}
WARN_ON(trans_pcie->txqs.tfd.addr_size !=
(trans->mac_cfg->gen2 ? 64 : 36));
trans_pcie->napi_dev = alloc_netdev_dummy(sizeof(struct iwl_trans_pcie *));
if (!trans_pcie->napi_dev) {
ret = -ENOMEM;
goto out_free_tso;
}
priv = netdev_priv(trans_pcie->napi_dev);
*priv = trans_pcie;
trans_pcie->trans = trans;
trans_pcie->opmode_down = true;
spin_lock_init(&trans_pcie->irq_lock);
spin_lock_init(&trans_pcie->reg_lock);
spin_lock_init(&trans_pcie->alloc_page_lock);
mutex_init(&trans_pcie->mutex);
init_waitqueue_head(&trans_pcie->ucode_write_waitq);
init_waitqueue_head(&trans_pcie->fw_reset_waitq);
init_waitqueue_head(&trans_pcie->imr_waitq);
trans_pcie->rba.alloc_wq = alloc_workqueue("rb_allocator",
WQ_HIGHPRI | WQ_UNBOUND, 0);
if (!trans_pcie->rba.alloc_wq) {
ret = -ENOMEM;
goto out_free_ndev;
}
INIT_WORK(&trans_pcie->rba.rx_alloc, iwl_pcie_rx_allocator_work);
trans_pcie->debug_rfkill = -1;
if (!mac_cfg->base->pcie_l1_allowed) {
pci_disable_link_state(pdev, PCIE_LINK_STATE_L0S |
PCIE_LINK_STATE_L1 |
PCIE_LINK_STATE_CLKPM);
}
addr_size = trans_pcie->txqs.tfd.addr_size;
ret = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(addr_size));
if (ret) {
ret = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32));
if (ret) {
dev_err(&pdev->dev, "No suitable DMA available\n");
goto out_no_pci;
}
}
pci_write_config_byte(pdev, PCI_CFG_RETRY_TIMEOUT, 0x00);
trans_pcie->pci_dev = pdev;
iwl_disable_interrupts(trans);
if (mac_cfg->device_family >= IWL_DEVICE_FAMILY_8000)
info->hw_rev_step = info->hw_rev & 0xF;
else
info->hw_rev_step = (info->hw_rev & 0xC) >> 2;
IWL_DEBUG_INFO(trans, "HW REV: 0x%0x\n", info->hw_rev);
iwl_pcie_set_interrupt_capa(pdev, trans, mac_cfg, info);
init_waitqueue_head(&trans_pcie->sx_waitq);
ret = iwl_pcie_alloc_invalid_tx_cmd(trans);
if (ret)
goto out_no_pci;
if (trans_pcie->msix_enabled) {
ret = iwl_pcie_init_msix_handler(pdev, trans_pcie, info);
if (ret)
goto out_no_pci;
} else {
ret = iwl_pcie_alloc_ict(trans);
if (ret)
goto out_no_pci;
ret = devm_request_threaded_irq(&pdev->dev, pdev->irq,
iwl_pcie_isr,
iwl_pcie_irq_handler,
IRQF_SHARED, DRV_NAME, trans);
if (ret) {
IWL_ERR(trans, "Error allocating IRQ %d\n", pdev->irq);
goto out_free_ict;
}
}
#ifdef CONFIG_IWLWIFI_DEBUGFS
trans_pcie->fw_mon_data.state = IWL_FW_MON_DBGFS_STATE_CLOSED;
mutex_init(&trans_pcie->fw_mon_data.mutex);
#endif
iwl_dbg_tlv_init(trans);
return trans;
out_free_ict:
iwl_pcie_free_ict(trans);
out_no_pci:
destroy_workqueue(trans_pcie->rba.alloc_wq);
out_free_ndev:
free_netdev(trans_pcie->napi_dev);
out_free_tso:
free_percpu(trans_pcie->txqs.tso_hdr_page);
out_free_txcmd_pool:
kmem_cache_destroy(trans_pcie->dev_cmd_pool);
out_free_trans:
iwl_trans_free(trans);
return ERR_PTR(ret);
}
void iwl_trans_pcie_copy_imr_fh(struct iwl_trans *trans,
u32 dst_addr, u64 src_addr, u32 byte_cnt)
{
iwl_write_prph(trans, IMR_UREG_CHICK,
iwl_read_prph(trans, IMR_UREG_CHICK) |
IMR_UREG_CHICK_HALT_UMAC_PERMANENTLY_MSK);
iwl_write_prph(trans, IMR_TFH_SRV_DMA_CHNL0_SRAM_ADDR, dst_addr);
iwl_write_prph(trans, IMR_TFH_SRV_DMA_CHNL0_DRAM_ADDR_LSB,
(u32)(src_addr & 0xFFFFFFFF));
iwl_write_prph(trans, IMR_TFH_SRV_DMA_CHNL0_DRAM_ADDR_MSB,
iwl_get_dma_hi_addr(src_addr));
iwl_write_prph(trans, IMR_TFH_SRV_DMA_CHNL0_BC, byte_cnt);
iwl_write_prph(trans, IMR_TFH_SRV_DMA_CHNL0_CTRL,
IMR_TFH_SRV_DMA_CHNL0_CTRL_D2S_IRQ_TARGET_POS |
IMR_TFH_SRV_DMA_CHNL0_CTRL_D2S_DMA_EN_POS |
IMR_TFH_SRV_DMA_CHNL0_CTRL_D2S_RS_MSK);
}
int iwl_trans_pcie_copy_imr(struct iwl_trans *trans,
u32 dst_addr, u64 src_addr, u32 byte_cnt)
{
struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans);
int ret = -1;
trans_pcie->imr_status = IMR_D2S_REQUESTED;
iwl_trans_pcie_copy_imr_fh(trans, dst_addr, src_addr, byte_cnt);
ret = wait_event_timeout(trans_pcie->imr_waitq,
trans_pcie->imr_status !=
IMR_D2S_REQUESTED, 5 * HZ);
if (!ret || trans_pcie->imr_status == IMR_D2S_ERROR) {
IWL_ERR(trans, "Failed to copy IMR Memory chunk!\n");
iwl_trans_pcie_dump_regs(trans, trans_pcie->pci_dev);
return -ETIMEDOUT;
}
trans_pcie->imr_status = IMR_D2S_IDLE;
return 0;
}
static void get_crf_id(struct iwl_trans *iwl_trans,
struct iwl_trans_info *info)
{
u32 sd_reg_ver_addr;
u32 hw_wfpm_id;
u32 val = 0;
u8 step;
if (iwl_trans->mac_cfg->device_family >= IWL_DEVICE_FAMILY_AX210)
sd_reg_ver_addr = SD_REG_VER_GEN2;
else
sd_reg_ver_addr = SD_REG_VER;
if (iwl_trans->mac_cfg->device_family == IWL_DEVICE_FAMILY_DR ||
iwl_trans->mac_cfg->device_family == IWL_DEVICE_FAMILY_SC) {
u32 req = iwl_read_umac_prph_no_grab(iwl_trans,
WFPM_RSRCS_4PHS_REQ_STTS);
int ret;
if (!(req & RSRC_REQ_CNVR_TOP)) {
IWL_ERR(iwl_trans,
"WFPM_RSRCS_4PHS_REQ_STTS bit 6 is clear 0x%x\n",
req);
return;
}
ret = iwl_poll_umac_prph_bits_no_grab(iwl_trans,
WFPM_RSRCS_4PHS_ACK_STTS,
RSRC_ACK_CNVR_TOP,
RSRC_ACK_CNVR_TOP,
50 * 1000);
if (ret < 0)
IWL_ERR(iwl_trans,
"WFPM_RSRCS_4PHS_ACK_STTS bit 6 is clear\n");
}
val = iwl_read_umac_prph_no_grab(iwl_trans, WFPM_CTRL_REG);
val |= WFPM_AUX_CTL_AUX_IF_MAC_OWNER_MSK;
iwl_write_umac_prph_no_grab(iwl_trans, WFPM_CTRL_REG, val);
info->hw_crf_id = iwl_read_prph_no_grab(iwl_trans, sd_reg_ver_addr);
info->hw_cnv_id = iwl_read_prph_no_grab(iwl_trans, CNVI_AUX_MISC_CHIP);
if (CSR_HW_REV_TYPE(info->hw_rev) == IWL_CFG_MAC_TYPE_BZ_W)
step = SILICON_B_STEP;
if (CSR_HW_REV_TYPE(info->hw_rev) == IWL_CFG_MAC_TYPE_BZ) {
step = CNVI_AUX_MISC_CHIP_MAC_STEP(info->hw_cnv_id);
if ((CNVI_AUX_MISC_CHIP_PROD_TYPE(info->hw_cnv_id) ==
CNVI_AUX_MISC_CHIP_PROD_TYPE_BZ_U) &&
step == SILICON_A_STEP)
step = SILICON_B_STEP;
}
if (CSR_HW_REV_TYPE(info->hw_rev) == IWL_CFG_MAC_TYPE_BZ ||
CSR_HW_REV_TYPE(info->hw_rev) == IWL_CFG_MAC_TYPE_BZ_W) {
info->hw_rev_step = step;
info->hw_rev |= step;
}
hw_wfpm_id = iwl_read_umac_prph_no_grab(iwl_trans, WFPM_OTP_CFG1_ADDR);
IWL_INFO(iwl_trans, "Detected crf-id 0x%x, cnv-id 0x%x wfpm id 0x%x\n",
info->hw_crf_id, info->hw_cnv_id, hw_wfpm_id);
}
static int map_crf_id(struct iwl_trans *iwl_trans,
struct iwl_trans_info *info)
{
int ret = 0;
u32 val = info->hw_crf_id;
u32 step_id = REG_CRF_ID_STEP(val);
u32 slave_id = REG_CRF_ID_SLAVE(val);
u32 hw_wfpm_id = iwl_read_umac_prph_no_grab(iwl_trans,
WFPM_OTP_CFG1_ADDR);
u32 cdb_id_wfpm = WFPM_OTP_CFG1_IS_CDB(hw_wfpm_id);
switch (REG_CRF_ID_TYPE(val)) {
case REG_CRF_ID_TYPE_JF_1:
info->hw_rf_id = (IWL_CFG_RF_TYPE_JF1 << 12);
break;
case REG_CRF_ID_TYPE_JF_2:
info->hw_rf_id = (IWL_CFG_RF_TYPE_JF2 << 12);
break;
case REG_CRF_ID_TYPE_HR_NONE_CDB_1X1:
info->hw_rf_id = (IWL_CFG_RF_TYPE_HR1 << 12);
break;
case REG_CRF_ID_TYPE_HR_NONE_CDB:
info->hw_rf_id = (IWL_CFG_RF_TYPE_HR2 << 12);
break;
case REG_CRF_ID_TYPE_HR_CDB:
info->hw_rf_id = (IWL_CFG_RF_TYPE_HR2 << 12);
break;
case REG_CRF_ID_TYPE_GF:
info->hw_rf_id = (IWL_CFG_RF_TYPE_GF << 12);
break;
case REG_CRF_ID_TYPE_FM:
info->hw_rf_id = (IWL_CFG_RF_TYPE_FM << 12);
break;
case REG_CRF_ID_TYPE_WHP:
info->hw_rf_id = (IWL_CFG_RF_TYPE_WH << 12);
break;
case REG_CRF_ID_TYPE_PE:
info->hw_rf_id = (IWL_CFG_RF_TYPE_PE << 12);
break;
default:
ret = -EIO;
IWL_ERR(iwl_trans,
"Can't find a correct rfid for crf id 0x%x\n",
REG_CRF_ID_TYPE(val));
goto out;
}
info->hw_rf_id |= (step_id << 8);
if (cdb_id_wfpm || slave_id) {
info->hw_rf_id += BIT(28);
IWL_INFO(iwl_trans, "Adding cdb to rf id\n");
}
IWL_INFO(iwl_trans,
"Detected rf-type 0x%x step-id 0x%x slave-id 0x%x from crf id 0x%x\n",
REG_CRF_ID_TYPE(val), step_id, slave_id, info->hw_rf_id);
IWL_INFO(iwl_trans,
"Detected cdb-id 0x%x from wfpm id 0x%x\n",
cdb_id_wfpm, hw_wfpm_id);
out:
return ret;
}
static void iwl_pcie_recheck_me_status(struct work_struct *wk)
{
struct iwl_trans_pcie *trans_pcie = container_of(wk,
typeof(*trans_pcie),
me_recheck_wk.work);
u32 val;
val = iwl_read32(trans_pcie->trans, CSR_HW_IF_CONFIG_REG);
trans_pcie->me_present = !!(val & CSR_HW_IF_CONFIG_REG_IAMT_UP);
}
static void iwl_pcie_check_me_status(struct iwl_trans *trans)
{
struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans);
u32 val;
trans_pcie->me_present = -1;
INIT_DELAYED_WORK(&trans_pcie->me_recheck_wk,
iwl_pcie_recheck_me_status);
if (trans->mac_cfg->device_family < IWL_DEVICE_FAMILY_BZ)
return;
val = iwl_read_prph(trans, CNVI_SCU_REG_FOR_ECO_1);
if (val & CNVI_SCU_REG_FOR_ECO_1_WIAMT_KNOWN) {
trans_pcie->me_present =
!!(val & CNVI_SCU_REG_FOR_ECO_1_WIAMT_PRESENT);
return;
}
val = iwl_read32(trans, CSR_HW_IF_CONFIG_REG);
if (val & (CSR_HW_IF_CONFIG_REG_ME_OWN |
CSR_HW_IF_CONFIG_REG_IAMT_UP)) {
trans_pcie->me_present = 1;
return;
}
schedule_delayed_work(&trans_pcie->me_recheck_wk, HZ);
}
int iwl_pci_gen1_2_probe(struct pci_dev *pdev,
const struct pci_device_id *ent,
const struct iwl_mac_cfg *mac_cfg,
u8 __iomem *hw_base, u32 hw_rev)
{
const struct iwl_dev_info *dev_info;
struct iwl_trans_info info = {
.hw_id = (pdev->device << 16) + pdev->subsystem_device,
.hw_rev = hw_rev,
};
struct iwl_trans *iwl_trans;
struct iwl_trans_pcie *trans_pcie;
int ret;
iwl_trans = iwl_trans_pcie_alloc(pdev, mac_cfg, &info, hw_base);
if (IS_ERR(iwl_trans))
return PTR_ERR(iwl_trans);
trans_pcie = IWL_TRANS_GET_PCIE_TRANS(iwl_trans);
iwl_trans_pcie_check_product_reset_status(pdev);
iwl_trans_pcie_check_product_reset_mode(pdev);
iwl_trans_set_info(iwl_trans, &info);
ret = iwl_pcie_prepare_card_hw(iwl_trans);
if (!ret) {
ret = iwl_trans_activate_nic(iwl_trans);
if (ret)
goto out_free_trans;
if (iwl_trans_grab_nic_access(iwl_trans)) {
get_crf_id(iwl_trans, &info);
iwl_trans_release_nic_access(iwl_trans);
} else {
ret = -EIO;
goto out_free_trans;
}
}
info.hw_rf_id = iwl_read32(iwl_trans, CSR_HW_RF_ID);
if (iwl_trans->mac_cfg->device_family >= IWL_DEVICE_FAMILY_9000 &&
!CSR_HW_RFID_TYPE(info.hw_rf_id) && map_crf_id(iwl_trans, &info)) {
ret = -EINVAL;
goto out_free_trans;
}
IWL_INFO(iwl_trans, "PCI dev %04x/%04x, rev=0x%x, rfid=0x%x\n",
pdev->device, pdev->subsystem_device,
info.hw_rev, info.hw_rf_id);
#if !IS_ENABLED(CONFIG_IWLMLD)
if (iwl_drv_is_wifi7_supported(iwl_trans)) {
IWL_ERR(iwl_trans,
"IWLMLD needs to be compiled to support this device\n");
ret = -EOPNOTSUPP;
goto out_free_trans;
}
#endif
dev_info = iwl_pci_find_dev_info(pdev->device, pdev->subsystem_device,
CSR_HW_RFID_TYPE(info.hw_rf_id),
CSR_HW_RFID_IS_CDB(info.hw_rf_id),
IWL_SUBDEVICE_RF_ID(pdev->subsystem_device),
IWL_SUBDEVICE_BW_LIM(pdev->subsystem_device),
!iwl_trans->mac_cfg->integrated);
if (dev_info) {
iwl_trans->cfg = dev_info->cfg;
info.name = dev_info->name;
}
#if IS_ENABLED(CONFIG_IWLMVM)
if (iwl_trans->cfg == &iwl7265_cfg &&
(info.hw_rev & CSR_HW_REV_TYPE_MSK) == CSR_HW_REV_TYPE_7265D)
iwl_trans->cfg = &iwl7265d_cfg;
#endif
if (!iwl_trans->cfg) {
pr_err("No config found for PCI dev %04x/%04x, rev=0x%x, rfid=0x%x\n",
pdev->device, pdev->subsystem_device,
info.hw_rev, info.hw_rf_id);
ret = -EINVAL;
goto out_free_trans;
}
IWL_INFO(iwl_trans, "Detected %s\n", info.name);
if (iwl_trans->mac_cfg->mq_rx_supported) {
if (WARN_ON(!iwl_trans->cfg->num_rbds)) {
ret = -EINVAL;
goto out_free_trans;
}
trans_pcie->num_rx_bufs = iwl_trans_get_num_rbds(iwl_trans);
} else {
trans_pcie->num_rx_bufs = RX_QUEUE_SIZE;
}
if (!iwl_trans->mac_cfg->integrated) {
u16 link_status;
pcie_capability_read_word(pdev, PCI_EXP_LNKSTA, &link_status);
info.pcie_link_speed =
u16_get_bits(link_status, PCI_EXP_LNKSTA_CLS);
}
iwl_trans_set_info(iwl_trans, &info);
pci_set_drvdata(pdev, iwl_trans);
iwl_pcie_check_me_status(iwl_trans);
iwl_pcie_prepare_card_hw(iwl_trans);
iwl_trans->drv = iwl_drv_start(iwl_trans);
if (IS_ERR(iwl_trans->drv)) {
ret = PTR_ERR(iwl_trans->drv);
goto out_free_trans;
}
iwl_trans_pcie_dbgfs_register(iwl_trans);
return 0;
out_free_trans:
iwl_trans_pcie_free(iwl_trans);
return ret;
}
void iwl_pcie_gen1_2_remove(struct iwl_trans *trans)
{
struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans);
cancel_delayed_work_sync(&trans_pcie->me_recheck_wk);
iwl_drv_stop(trans->drv);
iwl_trans_pcie_free(trans);
}
int iwl_pcie_gen1_2_activate_nic(struct iwl_trans *trans)
{
const struct iwl_mac_cfg *mac_cfg = trans->mac_cfg;
u32 poll_ready;
int err;
if (mac_cfg->bisr_workaround) {
mdelay(2);
}
if (mac_cfg->device_family >= IWL_DEVICE_FAMILY_BZ) {
iwl_set_bit(trans, CSR_GP_CNTRL,
CSR_GP_CNTRL_REG_FLAG_BZ_MAC_ACCESS_REQ |
CSR_GP_CNTRL_REG_FLAG_MAC_INIT);
poll_ready = CSR_GP_CNTRL_REG_FLAG_MAC_STATUS;
} else {
iwl_set_bit(trans, CSR_GP_CNTRL,
CSR_GP_CNTRL_REG_FLAG_INIT_DONE);
poll_ready = CSR_GP_CNTRL_REG_FLAG_MAC_CLOCK_READY;
}
if (mac_cfg->device_family == IWL_DEVICE_FAMILY_8000)
udelay(2);
err = iwl_poll_bits(trans, CSR_GP_CNTRL, poll_ready, 25000);
if (err < 0) {
IWL_DEBUG_INFO(trans, "Failed to wake NIC\n");
iwl_pcie_dump_host_monitor(trans);
}
if (mac_cfg->bisr_workaround) {
udelay(200);
}
return err;
}
