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path: root/drivers/net/wireless/iwlwifi/iwl-trans.h
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Diffstat (limited to 'drivers/net/wireless/iwlwifi/iwl-trans.h')
-rw-r--r--drivers/net/wireless/iwlwifi/iwl-trans.h57
1 files changed, 43 insertions, 14 deletions
diff --git a/drivers/net/wireless/iwlwifi/iwl-trans.h b/drivers/net/wireless/iwlwifi/iwl-trans.h
index ff1154232885..b76532e238c1 100644
--- a/drivers/net/wireless/iwlwifi/iwl-trans.h
+++ b/drivers/net/wireless/iwlwifi/iwl-trans.h
@@ -221,14 +221,21 @@ struct iwl_device_cmd {
/**
* struct iwl_hcmd_dataflag - flag for each one of the chunks of the command
*
- * IWL_HCMD_DFL_NOCOPY: By default, the command is copied to the host command's
+ * @IWL_HCMD_DFL_NOCOPY: By default, the command is copied to the host command's
* ring. The transport layer doesn't map the command's buffer to DMA, but
* rather copies it to an previously allocated DMA buffer. This flag tells
* the transport layer not to copy the command, but to map the existing
- * buffer. This can save memcpy and is worth with very big comamnds.
+ * buffer (that is passed in) instead. This saves the memcpy and allows
+ * commands that are bigger than the fixed buffer to be submitted.
+ * Note that a TFD entry after a NOCOPY one cannot be a normal copied one.
+ * @IWL_HCMD_DFL_DUP: Only valid without NOCOPY, duplicate the memory for this
+ * chunk internally and free it again after the command completes. This
+ * can (currently) be used only once per command.
+ * Note that a TFD entry after a DUP one cannot be a normal copied one.
*/
enum iwl_hcmd_dataflag {
IWL_HCMD_DFL_NOCOPY = BIT(0),
+ IWL_HCMD_DFL_DUP = BIT(1),
};
/**
@@ -348,14 +355,17 @@ struct iwl_trans;
* @start_fw: allocates and inits all the resources for the transport
* layer. Also kick a fw image.
* May sleep
- * @fw_alive: called when the fw sends alive notification
+ * @fw_alive: called when the fw sends alive notification. If the fw provides
+ * the SCD base address in SRAM, then provide it here, or 0 otherwise.
* May sleep
* @stop_device:stops the whole device (embedded CPU put to reset)
* May sleep
* @wowlan_suspend: put the device into the correct mode for WoWLAN during
* suspend. This is optional, if not implemented WoWLAN will not be
* supported. This callback may sleep.
- * @send_cmd:send a host command
+ * @send_cmd:send a host command. Must return -ERFKILL if RFkill is asserted.
+ * If RFkill is asserted in the middle of a SYNC host command, it must
+ * return -ERFKILL straight away.
* May sleep only if CMD_SYNC is set
* @tx: send an skb
* Must be atomic
@@ -375,6 +385,8 @@ struct iwl_trans;
* @write8: write a u8 to a register at offset ofs from the BAR
* @write32: write a u32 to a register at offset ofs from the BAR
* @read32: read a u32 register at offset ofs from the BAR
+ * @read_prph: read a DWORD from a periphery register
+ * @write_prph: write a DWORD to a periphery register
* @configure: configure parameters required by the transport layer from
* the op_mode. May be called several times before start_fw, can't be
* called after that.
@@ -385,7 +397,7 @@ struct iwl_trans_ops {
int (*start_hw)(struct iwl_trans *iwl_trans);
void (*stop_hw)(struct iwl_trans *iwl_trans, bool op_mode_leaving);
int (*start_fw)(struct iwl_trans *trans, const struct fw_img *fw);
- void (*fw_alive)(struct iwl_trans *trans);
+ void (*fw_alive)(struct iwl_trans *trans, u32 scd_addr);
void (*stop_device)(struct iwl_trans *trans);
void (*wowlan_suspend)(struct iwl_trans *trans);
@@ -410,6 +422,8 @@ struct iwl_trans_ops {
void (*write8)(struct iwl_trans *trans, u32 ofs, u8 val);
void (*write32)(struct iwl_trans *trans, u32 ofs, u32 val);
u32 (*read32)(struct iwl_trans *trans, u32 ofs);
+ u32 (*read_prph)(struct iwl_trans *trans, u32 ofs);
+ void (*write_prph)(struct iwl_trans *trans, u32 ofs, u32 val);
void (*configure)(struct iwl_trans *trans,
const struct iwl_trans_config *trans_cfg);
void (*set_pmi)(struct iwl_trans *trans, bool state);
@@ -438,12 +452,15 @@ enum iwl_trans_state {
* Set during transport allocation.
* @hw_id_str: a string with info about HW ID. Set during transport allocation.
* @pm_support: set to true in start_hw if link pm is supported
- * @wait_command_queue: the wait_queue for SYNC host commands
* @dev_cmd_pool: pool for Tx cmd allocation - for internal use only.
* The user should use iwl_trans_{alloc,free}_tx_cmd.
* @dev_cmd_headroom: room needed for the transport's private use before the
* device_cmd for Tx - for internal use only
* The user should use iwl_trans_{alloc,free}_tx_cmd.
+ * @rx_mpdu_cmd: MPDU RX command ID, must be assigned by opmode before
+ * starting the firmware, used for tracing
+ * @rx_mpdu_cmd_hdr_size: used for tracing, amount of data before the
+ * start of the 802.11 header in the @rx_mpdu_cmd
*/
struct iwl_trans {
const struct iwl_trans_ops *ops;
@@ -457,9 +474,9 @@ struct iwl_trans {
u32 hw_id;
char hw_id_str[52];
- bool pm_support;
+ u8 rx_mpdu_cmd, rx_mpdu_cmd_hdr_size;
- wait_queue_head_t wait_command_queue;
+ bool pm_support;
/* The following fields are internal only */
struct kmem_cache *dev_cmd_pool;
@@ -476,10 +493,6 @@ struct iwl_trans {
static inline void iwl_trans_configure(struct iwl_trans *trans,
const struct iwl_trans_config *trans_cfg)
{
- /*
- * only set the op_mode for the moment. Later on, this function will do
- * more
- */
trans->op_mode = trans_cfg->op_mode;
trans->ops->configure(trans, trans_cfg);
@@ -499,16 +512,19 @@ static inline void iwl_trans_stop_hw(struct iwl_trans *trans,
trans->ops->stop_hw(trans, op_mode_leaving);
+ if (op_mode_leaving)
+ trans->op_mode = NULL;
+
trans->state = IWL_TRANS_NO_FW;
}
-static inline void iwl_trans_fw_alive(struct iwl_trans *trans)
+static inline void iwl_trans_fw_alive(struct iwl_trans *trans, u32 scd_addr)
{
might_sleep();
trans->state = IWL_TRANS_FW_ALIVE;
- trans->ops->fw_alive(trans);
+ trans->ops->fw_alive(trans, scd_addr);
}
static inline int iwl_trans_start_fw(struct iwl_trans *trans,
@@ -516,6 +532,8 @@ static inline int iwl_trans_start_fw(struct iwl_trans *trans,
{
might_sleep();
+ WARN_ON_ONCE(!trans->rx_mpdu_cmd);
+
return trans->ops->start_fw(trans, fw);
}
@@ -650,6 +668,17 @@ static inline u32 iwl_trans_read32(struct iwl_trans *trans, u32 ofs)
return trans->ops->read32(trans, ofs);
}
+static inline u32 iwl_trans_read_prph(struct iwl_trans *trans, u32 ofs)
+{
+ return trans->ops->read_prph(trans, ofs);
+}
+
+static inline void iwl_trans_write_prph(struct iwl_trans *trans, u32 ofs,
+ u32 val)
+{
+ return trans->ops->write_prph(trans, ofs, val);
+}
+
static inline void iwl_trans_set_pmi(struct iwl_trans *trans, bool state)
{
trans->ops->set_pmi(trans, state);