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iwlwifi: eeprom gets transport and not bus

Browse source 
This is temporary, but at least we can now throw the bus away
and move the iwl_pci_{probe,remove} functions.

Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
This commit is contained in:
Emmanuel Grumbach 2012-02-13 11:24:47 +02:00 committed by Wey-Yi Guy
parent 90304749c3
commit ca77d53484
3 changed files with 80 additions and 77 deletions
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2
drivers/net/wireless/iwlwifi/iwl-agn.c
View file

@ -1215,7 +1215,7 @@ static struct iwl_op_mode *iwl_op_mode_dvm_start(struct iwl_trans *trans)
* 4. Read EEPROM
*****************/
/* Read the EEPROM */
err = iwl_eeprom_init(priv, trans(priv)->hw_rev);
err = iwl_eeprom_init(trans(priv), trans(priv)->hw_rev);
/* Reset chip to save power until we load uCode during "up". */
iwl_trans_stop_hw(trans(priv));
if (err) {

152
drivers/net/wireless/iwlwifi/iwl-eeprom.c
View file

@ -153,23 +153,23 @@ static const u8 iwl_eeprom_band_7[] = { /* 5.2 ht40 channel */
#define EEPROM_SEM_TIMEOUT 10 /* milliseconds */
#define EEPROM_SEM_RETRY_LIMIT 1000 /* number of attempts (not time) */
static int iwl_eeprom_acquire_semaphore(struct iwl_bus *bus)
static int iwl_eeprom_acquire_semaphore(struct iwl_trans *trans)
{
u16 count;
int ret;
for (count = 0; count < EEPROM_SEM_RETRY_LIMIT; count++) {
/* Request semaphore */
iwl_set_bit(trans(bus), CSR_HW_IF_CONFIG_REG,
iwl_set_bit(trans, CSR_HW_IF_CONFIG_REG,
CSR_HW_IF_CONFIG_REG_BIT_EEPROM_OWN_SEM);
/* See if we got it */
ret = iwl_poll_bit(trans(bus), CSR_HW_IF_CONFIG_REG,
ret = iwl_poll_bit(trans, CSR_HW_IF_CONFIG_REG,
CSR_HW_IF_CONFIG_REG_BIT_EEPROM_OWN_SEM,
CSR_HW_IF_CONFIG_REG_BIT_EEPROM_OWN_SEM,
EEPROM_SEM_TIMEOUT);
if (ret >= 0) {
IWL_DEBUG_EEPROM(trans(bus),
IWL_DEBUG_EEPROM(trans,
"Acquired semaphore after %d tries.\n",
count+1);
return ret;
@ -179,9 +179,9 @@ static int iwl_eeprom_acquire_semaphore(struct iwl_bus *bus)
return ret;
}
static void iwl_eeprom_release_semaphore(struct iwl_bus *bus)
static void iwl_eeprom_release_semaphore(struct iwl_trans *trans)
{
iwl_clear_bit(trans(bus), CSR_HW_IF_CONFIG_REG,
iwl_clear_bit(trans, CSR_HW_IF_CONFIG_REG,
CSR_HW_IF_CONFIG_REG_BIT_EEPROM_OWN_SEM);
}
@ -308,19 +308,20 @@ void iwl_eeprom_get_mac(const struct iwl_shared *shrd, u8 *mac)
*
******************************************************************************/
static void iwl_set_otp_access(struct iwl_bus *bus, enum iwl_access_mode mode)
static void iwl_set_otp_access(struct iwl_trans *trans,
enum iwl_access_mode mode)
{
iwl_read32(trans(bus), CSR_OTP_GP_REG);
iwl_read32(trans, CSR_OTP_GP_REG);
if (mode == IWL_OTP_ACCESS_ABSOLUTE)
iwl_clear_bit(trans(bus), CSR_OTP_GP_REG,
iwl_clear_bit(trans, CSR_OTP_GP_REG,
CSR_OTP_GP_REG_OTP_ACCESS_MODE);
else
iwl_set_bit(trans(bus), CSR_OTP_GP_REG,
iwl_set_bit(trans, CSR_OTP_GP_REG,
CSR_OTP_GP_REG_OTP_ACCESS_MODE);
}
static int iwl_get_nvm_type(struct iwl_bus *bus, u32 hw_rev)
static int iwl_get_nvm_type(struct iwl_trans *trans, u32 hw_rev)
{
u32 otpgp;
int nvm_type;
@ -328,7 +329,7 @@ static int iwl_get_nvm_type(struct iwl_bus *bus, u32 hw_rev)
/* OTP only valid for CP/PP and after */
switch (hw_rev & CSR_HW_REV_TYPE_MSK) {
case CSR_HW_REV_TYPE_NONE:
IWL_ERR(bus, "Unknown hardware type\n");
IWL_ERR(trans, "Unknown hardware type\n");
return -ENOENT;
case CSR_HW_REV_TYPE_5300:
case CSR_HW_REV_TYPE_5350:
@ -337,7 +338,7 @@ static int iwl_get_nvm_type(struct iwl_bus *bus, u32 hw_rev)
nvm_type = NVM_DEVICE_TYPE_EEPROM;
break;
default:
otpgp = iwl_read32(trans(bus), CSR_OTP_GP_REG);
otpgp = iwl_read32(trans, CSR_OTP_GP_REG);
if (otpgp & CSR_OTP_GP_REG_DEVICE_SELECT)
nvm_type = NVM_DEVICE_TYPE_OTP;
else
@ -347,73 +348,74 @@ static int iwl_get_nvm_type(struct iwl_bus *bus, u32 hw_rev)
return nvm_type;
}
static int iwl_init_otp_access(struct iwl_bus *bus)
static int iwl_init_otp_access(struct iwl_trans *trans)
{
int ret;
/* Enable 40MHz radio clock */
iwl_write32(trans(bus), CSR_GP_CNTRL,
iwl_read32(trans(bus), CSR_GP_CNTRL) |
iwl_write32(trans, CSR_GP_CNTRL,
iwl_read32(trans, CSR_GP_CNTRL) |
CSR_GP_CNTRL_REG_FLAG_INIT_DONE);
/* wait for clock to be ready */
ret = iwl_poll_bit(trans(bus), CSR_GP_CNTRL,
ret = iwl_poll_bit(trans, CSR_GP_CNTRL,
CSR_GP_CNTRL_REG_FLAG_MAC_CLOCK_READY,
CSR_GP_CNTRL_REG_FLAG_MAC_CLOCK_READY,
25000);
if (ret < 0)
IWL_ERR(bus, "Time out access OTP\n");
IWL_ERR(trans, "Time out access OTP\n");
else {
iwl_set_bits_prph(trans(bus), APMG_PS_CTRL_REG,
iwl_set_bits_prph(trans, APMG_PS_CTRL_REG,
APMG_PS_CTRL_VAL_RESET_REQ);
udelay(5);
iwl_clear_bits_prph(trans(bus), APMG_PS_CTRL_REG,
iwl_clear_bits_prph(trans, APMG_PS_CTRL_REG,
APMG_PS_CTRL_VAL_RESET_REQ);
/*
* CSR auto clock gate disable bit -
* this is only applicable for HW with OTP shadow RAM
*/
if (cfg(bus)->base_params->shadow_ram_support)
iwl_set_bit(trans(bus), CSR_DBG_LINK_PWR_MGMT_REG,
if (cfg(trans)->base_params->shadow_ram_support)
iwl_set_bit(trans, CSR_DBG_LINK_PWR_MGMT_REG,
CSR_RESET_LINK_PWR_MGMT_DISABLED);
}
return ret;
}
static int iwl_read_otp_word(struct iwl_bus *bus, u16 addr, __le16 *eeprom_data)
static int iwl_read_otp_word(struct iwl_trans *trans, u16 addr,
__le16 *eeprom_data)
{
int ret = 0;
u32 r;
u32 otpgp;
iwl_write32(trans(bus), CSR_EEPROM_REG,
iwl_write32(trans, CSR_EEPROM_REG,
CSR_EEPROM_REG_MSK_ADDR & (addr << 1));
ret = iwl_poll_bit(trans(bus), CSR_EEPROM_REG,
ret = iwl_poll_bit(trans, CSR_EEPROM_REG,
CSR_EEPROM_REG_READ_VALID_MSK,
CSR_EEPROM_REG_READ_VALID_MSK,
IWL_EEPROM_ACCESS_TIMEOUT);
if (ret < 0) {
IWL_ERR(bus, "Time out reading OTP[%d]\n", addr);
IWL_ERR(trans, "Time out reading OTP[%d]\n", addr);
return ret;
}
r = iwl_read32(trans(bus), CSR_EEPROM_REG);
r = iwl_read32(trans, CSR_EEPROM_REG);
/* check for ECC errors: */
otpgp = iwl_read32(trans(bus), CSR_OTP_GP_REG);
otpgp = iwl_read32(trans, CSR_OTP_GP_REG);
if (otpgp & CSR_OTP_GP_REG_ECC_UNCORR_STATUS_MSK) {
/* stop in this case */
/* set the uncorrectable OTP ECC bit for acknowledgement */
iwl_set_bit(trans(bus), CSR_OTP_GP_REG,
iwl_set_bit(trans, CSR_OTP_GP_REG,
CSR_OTP_GP_REG_ECC_UNCORR_STATUS_MSK);
IWL_ERR(bus, "Uncorrectable OTP ECC error, abort OTP read\n");
IWL_ERR(trans, "Uncorrectable OTP ECC error, abort OTP read\n");
return -EINVAL;
}
if (otpgp & CSR_OTP_GP_REG_ECC_CORR_STATUS_MSK) {
/* continue in this case */
/* set the correctable OTP ECC bit for acknowledgement */
iwl_set_bit(trans(bus), CSR_OTP_GP_REG,
iwl_set_bit(trans, CSR_OTP_GP_REG,
CSR_OTP_GP_REG_ECC_CORR_STATUS_MSK);
IWL_ERR(bus, "Correctable OTP ECC error, continue read\n");
IWL_ERR(trans, "Correctable OTP ECC error, continue read\n");
}
*eeprom_data = cpu_to_le16(r >> 16);
return 0;
@ -422,20 +424,20 @@ static int iwl_read_otp_word(struct iwl_bus *bus, u16 addr, __le16 *eeprom_data)
/*
* iwl_is_otp_empty: check for empty OTP
*/
static bool iwl_is_otp_empty(struct iwl_bus *bus)
static bool iwl_is_otp_empty(struct iwl_trans *trans)
{
u16 next_link_addr = 0;
__le16 link_value;
bool is_empty = false;
/* locate the beginning of OTP link list */
if (!iwl_read_otp_word(bus, next_link_addr, &link_value)) {
if (!iwl_read_otp_word(trans, next_link_addr, &link_value)) {
if (!link_value) {
IWL_ERR(bus, "OTP is empty\n");
IWL_ERR(trans, "OTP is empty\n");
is_empty = true;
}
} else {
IWL_ERR(bus, "Unable to read first block of OTP list.\n");
IWL_ERR(trans, "Unable to read first block of OTP list.\n");
is_empty = true;
}
@ -452,7 +454,7 @@ static bool iwl_is_otp_empty(struct iwl_bus *bus)
* we should read and used to configure the device.
* only perform this operation if shadow RAM is disabled
*/
static int iwl_find_otp_image(struct iwl_bus *bus,
static int iwl_find_otp_image(struct iwl_trans *trans,
u16 *validblockaddr)
{
u16 next_link_addr = 0, valid_addr;
@ -460,10 +462,10 @@ static int iwl_find_otp_image(struct iwl_bus *bus,
int usedblocks = 0;
/* set addressing mode to absolute to traverse the link list */
iwl_set_otp_access(bus, IWL_OTP_ACCESS_ABSOLUTE);
iwl_set_otp_access(trans, IWL_OTP_ACCESS_ABSOLUTE);
/* checking for empty OTP or error */
if (iwl_is_otp_empty(bus))
if (iwl_is_otp_empty(trans))
return -EINVAL;
/*
@ -477,9 +479,9 @@ static int iwl_find_otp_image(struct iwl_bus *bus,
*/
valid_addr = next_link_addr;
next_link_addr = le16_to_cpu(link_value) * sizeof(u16);
IWL_DEBUG_EEPROM(bus, "OTP blocks %d addr 0x%x\n",
IWL_DEBUG_EEPROM(trans, "OTP blocks %d addr 0x%x\n",
usedblocks, next_link_addr);
if (iwl_read_otp_word(bus, next_link_addr, &link_value))
if (iwl_read_otp_word(trans, next_link_addr, &link_value))
return -EINVAL;
if (!link_value) {
/*
@ -494,10 +496,10 @@ static int iwl_find_otp_image(struct iwl_bus *bus,
}
/* more in the link list, continue */
usedblocks++;
} while (usedblocks <= cfg(bus)->base_params->max_ll_items);
} while (usedblocks <= cfg(trans)->base_params->max_ll_items);
/* OTP has no valid blocks */
IWL_DEBUG_EEPROM(bus, "OTP has no valid blocks\n");
IWL_DEBUG_EEPROM(trans, "OTP has no valid blocks\n");
return -EINVAL;
}
@ -657,63 +659,62 @@ void iwl_eeprom_enhanced_txpower(struct iwl_priv *priv)
*
* NOTE: This routine uses the non-debug IO access functions.
*/
int iwl_eeprom_init(struct iwl_priv *priv, u32 hw_rev)
int iwl_eeprom_init(struct iwl_trans *trans, u32 hw_rev)
{
struct iwl_shared *shrd = priv->shrd;
__le16 *e;
u32 gp = iwl_read32(trans(priv), CSR_EEPROM_GP);
u32 gp = iwl_read32(trans, CSR_EEPROM_GP);
int sz;
int ret;
u16 addr;
u16 validblockaddr = 0;
u16 cache_addr = 0;
trans(priv)->nvm_device_type = iwl_get_nvm_type(bus(priv), hw_rev);
if (trans(priv)->nvm_device_type == -ENOENT)
trans->nvm_device_type = iwl_get_nvm_type(trans, hw_rev);
if (trans->nvm_device_type == -ENOENT)
return -ENOENT;
/* allocate eeprom */
sz = cfg(priv)->base_params->eeprom_size;
IWL_DEBUG_EEPROM(priv, "NVM size = %d\n", sz);
shrd->eeprom = kzalloc(sz, GFP_KERNEL);
if (!shrd->eeprom) {
sz = cfg(trans)->base_params->eeprom_size;
IWL_DEBUG_EEPROM(trans, "NVM size = %d\n", sz);
trans->shrd->eeprom = kzalloc(sz, GFP_KERNEL);
if (!trans->shrd->eeprom) {
ret = -ENOMEM;
goto alloc_err;
}
e = (__le16 *)shrd->eeprom;
e = (__le16 *)trans->shrd->eeprom;
ret = iwl_eeprom_verify_signature(trans(priv));
ret = iwl_eeprom_verify_signature(trans);
if (ret < 0) {
IWL_ERR(priv, "EEPROM not found, EEPROM_GP=0x%08x\n", gp);
IWL_ERR(trans, "EEPROM not found, EEPROM_GP=0x%08x\n", gp);
ret = -ENOENT;
goto err;
}
/* Make sure driver (instead of uCode) is allowed to read EEPROM */
ret = iwl_eeprom_acquire_semaphore(bus(priv));
ret = iwl_eeprom_acquire_semaphore(trans);
if (ret < 0) {
IWL_ERR(priv, "Failed to acquire EEPROM semaphore.\n");
IWL_ERR(trans, "Failed to acquire EEPROM semaphore.\n");
ret = -ENOENT;
goto err;
}
if (trans(priv)->nvm_device_type == NVM_DEVICE_TYPE_OTP) {
if (trans->nvm_device_type == NVM_DEVICE_TYPE_OTP) {
ret = iwl_init_otp_access(bus(priv));
ret = iwl_init_otp_access(trans);
if (ret) {
IWL_ERR(priv, "Failed to initialize OTP access.\n");
IWL_ERR(trans, "Failed to initialize OTP access.\n");
ret = -ENOENT;
goto done;
}
iwl_write32(trans(priv), CSR_EEPROM_GP,
iwl_read32(trans(priv), CSR_EEPROM_GP) &
iwl_write32(trans, CSR_EEPROM_GP,
iwl_read32(trans, CSR_EEPROM_GP) &
~CSR_EEPROM_GP_IF_OWNER_MSK);
iwl_set_bit(trans(priv), CSR_OTP_GP_REG,
iwl_set_bit(trans, CSR_OTP_GP_REG,
CSR_OTP_GP_REG_ECC_CORR_STATUS_MSK |
CSR_OTP_GP_REG_ECC_UNCORR_STATUS_MSK);
/* traversing the linked list if no shadow ram supported */
if (!cfg(priv)->base_params->shadow_ram_support) {
if (iwl_find_otp_image(bus(priv), &validblockaddr)) {
if (!cfg(trans)->base_params->shadow_ram_support) {
if (iwl_find_otp_image(trans, &validblockaddr)) {
ret = -ENOENT;
goto done;
}
@ -722,7 +723,7 @@ int iwl_eeprom_init(struct iwl_priv *priv, u32 hw_rev)
addr += sizeof(u16)) {
__le16 eeprom_data;
ret = iwl_read_otp_word(bus(priv), addr, &eeprom_data);
ret = iwl_read_otp_word(trans, addr, &eeprom_data);
if (ret)
goto done;
e[cache_addr / 2] = eeprom_data;
@ -733,34 +734,35 @@ int iwl_eeprom_init(struct iwl_priv *priv, u32 hw_rev)
for (addr = 0; addr < sz; addr += sizeof(u16)) {
u32 r;
iwl_write32(trans(priv), CSR_EEPROM_REG,
iwl_write32(trans, CSR_EEPROM_REG,
CSR_EEPROM_REG_MSK_ADDR & (addr << 1));
ret = iwl_poll_bit(trans(priv), CSR_EEPROM_REG,
ret = iwl_poll_bit(trans, CSR_EEPROM_REG,
CSR_EEPROM_REG_READ_VALID_MSK,
CSR_EEPROM_REG_READ_VALID_MSK,
IWL_EEPROM_ACCESS_TIMEOUT);
if (ret < 0) {
IWL_ERR(priv, "Time out reading EEPROM[%d]\n", addr);
IWL_ERR(trans,
"Time out reading EEPROM[%d]\n", addr);
goto done;
}
r = iwl_read32(trans(priv), CSR_EEPROM_REG);
r = iwl_read32(trans, CSR_EEPROM_REG);
e[addr / 2] = cpu_to_le16(r >> 16);
}
}
IWL_DEBUG_EEPROM(priv, "NVM Type: %s, version: 0x%x\n",
(trans(priv)->nvm_device_type == NVM_DEVICE_TYPE_OTP)
IWL_DEBUG_EEPROM(trans, "NVM Type: %s, version: 0x%x\n",
(trans->nvm_device_type == NVM_DEVICE_TYPE_OTP)
? "OTP" : "EEPROM",
iwl_eeprom_query16(shrd, EEPROM_VERSION));
iwl_eeprom_query16(trans->shrd, EEPROM_VERSION));
ret = 0;
done:
iwl_eeprom_release_semaphore(bus(priv));
iwl_eeprom_release_semaphore(trans);
err:
if (ret)
iwl_eeprom_free(priv->shrd);
iwl_eeprom_free(trans->shrd);
alloc_err:
return ret;
}

3
drivers/net/wireless/iwlwifi/iwl-eeprom.h
View file

@ -67,6 +67,7 @@
struct iwl_priv;
struct iwl_shared;
struct iwl_trans;
/*
* EEPROM access time values:
@ -305,7 +306,7 @@ struct iwl_eeprom_ops {
};
int iwl_eeprom_init(struct iwl_priv *priv, u32 hw_rev);
int iwl_eeprom_init(struct iwl_trans *trans, u32 hw_rev);
void iwl_eeprom_free(struct iwl_shared *shrd);
int iwl_eeprom_check_version(struct iwl_priv *priv);
int iwl_eeprom_check_sku(struct iwl_priv *priv);