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path: root/drivers/net/wireless/iwlwifi/pcie/internal.h
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Diffstat (limited to 'drivers/net/wireless/iwlwifi/pcie/internal.h')
-rw-r--r--drivers/net/wireless/iwlwifi/pcie/internal.h117
1 files changed, 64 insertions, 53 deletions
diff --git a/drivers/net/wireless/iwlwifi/pcie/internal.h b/drivers/net/wireless/iwlwifi/pcie/internal.h
index 401178f44a3b..d91d2e8c62f5 100644
--- a/drivers/net/wireless/iwlwifi/pcie/internal.h
+++ b/drivers/net/wireless/iwlwifi/pcie/internal.h
@@ -73,7 +73,7 @@ struct isr_statistics {
};
/**
- * struct iwl_rx_queue - Rx queue
+ * struct iwl_rxq - Rx queue
* @bd: driver's pointer to buffer of receive buffer descriptors (rbd)
* @bd_dma: bus address of buffer of receive buffer descriptors (rbd)
* @pool:
@@ -91,7 +91,7 @@ struct isr_statistics {
*
* NOTE: rx_free and rx_used are used as a FIFO for iwl_rx_mem_buffers
*/
-struct iwl_rx_queue {
+struct iwl_rxq {
__le32 *bd;
dma_addr_t bd_dma;
struct iwl_rx_mem_buffer pool[RX_QUEUE_SIZE + RX_FREE_BUFFERS];
@@ -157,8 +157,8 @@ struct iwl_cmd_meta {
* 32 since we don't need so many commands pending. Since the HW
* still uses 256 BDs for DMA though, n_bd stays 256. As a result,
* the software buffers (in the variables @meta, @txb in struct
- * iwl_tx_queue) only have 32 entries, while the HW buffers (@tfds
- * in the same struct) have 256.
+ * iwl_txq) only have 32 entries, while the HW buffers (@tfds in
+ * the same struct) have 256.
* This means that we end up with the following:
* HW entries: | 0 | ... | N * 32 | ... | N * 32 + 31 | ... | 255 |
* SW entries: | 0 | ... | 31 |
@@ -182,15 +182,17 @@ struct iwl_queue {
#define TFD_TX_CMD_SLOTS 256
#define TFD_CMD_SLOTS 32
-struct iwl_pcie_tx_queue_entry {
+struct iwl_pcie_txq_entry {
struct iwl_device_cmd *cmd;
struct iwl_device_cmd *copy_cmd;
struct sk_buff *skb;
+ /* buffer to free after command completes */
+ const void *free_buf;
struct iwl_cmd_meta meta;
};
/**
- * struct iwl_tx_queue - Tx Queue for DMA
+ * struct iwl_txq - Tx Queue for DMA
* @q: generic Rx/Tx queue descriptor
* @tfds: transmit frame descriptors (DMA memory)
* @entries: transmit entries (driver state)
@@ -203,10 +205,10 @@ struct iwl_pcie_tx_queue_entry {
* A Tx queue consists of circular buffer of BDs (a.k.a. TFDs, transmit frame
* descriptors) and required locking structures.
*/
-struct iwl_tx_queue {
+struct iwl_txq {
struct iwl_queue q;
struct iwl_tfd *tfds;
- struct iwl_pcie_tx_queue_entry *entries;
+ struct iwl_pcie_txq_entry *entries;
spinlock_t lock;
struct timer_list stuck_timer;
struct iwl_trans_pcie *trans_pcie;
@@ -236,7 +238,7 @@ struct iwl_tx_queue {
* @wd_timeout: queue watchdog timeout (jiffies)
*/
struct iwl_trans_pcie {
- struct iwl_rx_queue rxq;
+ struct iwl_rxq rxq;
struct work_struct rx_replenish;
struct iwl_trans *trans;
struct iwl_drv *drv;
@@ -258,7 +260,7 @@ struct iwl_trans_pcie {
struct iwl_dma_ptr scd_bc_tbls;
struct iwl_dma_ptr kw;
- struct iwl_tx_queue *txq;
+ struct iwl_txq *txq;
unsigned long queue_used[BITS_TO_LONGS(IWL_MAX_HW_QUEUES)];
unsigned long queue_stopped[BITS_TO_LONGS(IWL_MAX_HW_QUEUES)];
@@ -268,6 +270,8 @@ struct iwl_trans_pcie {
bool ucode_write_complete;
wait_queue_head_t ucode_write_waitq;
+ wait_queue_head_t wait_command_queue;
+
unsigned long status;
u8 cmd_queue;
u8 cmd_fifo;
@@ -283,13 +287,23 @@ struct iwl_trans_pcie {
unsigned long wd_timeout;
};
-/*****************************************************
-* DRIVER STATUS FUNCTIONS
-******************************************************/
-#define STATUS_HCMD_ACTIVE 0
-#define STATUS_DEVICE_ENABLED 1
-#define STATUS_TPOWER_PMI 2
-#define STATUS_INT_ENABLED 3
+/**
+ * enum iwl_pcie_status: status of the PCIe transport
+ * @STATUS_HCMD_ACTIVE: a SYNC command is being processed
+ * @STATUS_DEVICE_ENABLED: APM is enabled
+ * @STATUS_TPOWER_PMI: the device might be asleep (need to wake it up)
+ * @STATUS_INT_ENABLED: interrupts are enabled
+ * @STATUS_RFKILL: the HW RFkill switch is in KILL position
+ * @STATUS_FW_ERROR: the fw is in error state
+ */
+enum iwl_pcie_status {
+ STATUS_HCMD_ACTIVE,
+ STATUS_DEVICE_ENABLED,
+ STATUS_TPOWER_PMI,
+ STATUS_INT_ENABLED,
+ STATUS_RFKILL,
+ STATUS_FW_ERROR,
+};
#define IWL_TRANS_GET_PCIE_TRANS(_iwl_trans) \
((struct iwl_trans_pcie *) ((_iwl_trans)->trans_specific))
@@ -301,6 +315,10 @@ iwl_trans_pcie_get_trans(struct iwl_trans_pcie *trans_pcie)
trans_specific);
}
+/*
+ * Convention: trans API functions: iwl_trans_pcie_XXX
+ * Other functions: iwl_pcie_XXX
+ */
struct iwl_trans *iwl_trans_pcie_alloc(struct pci_dev *pdev,
const struct pci_device_id *ent,
const struct iwl_cfg *cfg);
@@ -309,50 +327,43 @@ void iwl_trans_pcie_free(struct iwl_trans *trans);
/*****************************************************
* RX
******************************************************/
-void iwl_bg_rx_replenish(struct work_struct *data);
-void iwl_irq_tasklet(struct iwl_trans *trans);
-void iwl_rx_replenish(struct iwl_trans *trans);
-void iwl_rx_queue_update_write_ptr(struct iwl_trans *trans,
- struct iwl_rx_queue *q);
+int iwl_pcie_rx_init(struct iwl_trans *trans);
+void iwl_pcie_tasklet(struct iwl_trans *trans);
+int iwl_pcie_rx_stop(struct iwl_trans *trans);
+void iwl_pcie_rx_free(struct iwl_trans *trans);
/*****************************************************
-* ICT
+* ICT - interrupt handling
******************************************************/
-void iwl_reset_ict(struct iwl_trans *trans);
-void iwl_disable_ict(struct iwl_trans *trans);
-int iwl_alloc_isr_ict(struct iwl_trans *trans);
-void iwl_free_isr_ict(struct iwl_trans *trans);
-irqreturn_t iwl_isr_ict(int irq, void *data);
+irqreturn_t iwl_pcie_isr_ict(int irq, void *data);
+int iwl_pcie_alloc_ict(struct iwl_trans *trans);
+void iwl_pcie_free_ict(struct iwl_trans *trans);
+void iwl_pcie_reset_ict(struct iwl_trans *trans);
+void iwl_pcie_disable_ict(struct iwl_trans *trans);
/*****************************************************
* TX / HCMD
******************************************************/
-void iwl_txq_update_write_ptr(struct iwl_trans *trans,
- struct iwl_tx_queue *txq);
-int iwlagn_txq_attach_buf_to_tfd(struct iwl_trans *trans,
- struct iwl_tx_queue *txq,
- dma_addr_t addr, u16 len, u8 reset);
-int iwl_queue_init(struct iwl_queue *q, int count, int slots_num, u32 id);
-int iwl_trans_pcie_send_cmd(struct iwl_trans *trans, struct iwl_host_cmd *cmd);
-void iwl_tx_cmd_complete(struct iwl_trans *trans,
- struct iwl_rx_cmd_buffer *rxb, int handler_status);
-void iwl_trans_txq_update_byte_cnt_tbl(struct iwl_trans *trans,
- struct iwl_tx_queue *txq,
- u16 byte_cnt);
+int iwl_pcie_tx_init(struct iwl_trans *trans);
+void iwl_pcie_tx_start(struct iwl_trans *trans, u32 scd_base_addr);
+int iwl_pcie_tx_stop(struct iwl_trans *trans);
+void iwl_pcie_tx_free(struct iwl_trans *trans);
void iwl_trans_pcie_txq_enable(struct iwl_trans *trans, int txq_id, int fifo,
int sta_id, int tid, int frame_limit, u16 ssn);
void iwl_trans_pcie_txq_disable(struct iwl_trans *trans, int queue);
-void iwl_txq_free_tfd(struct iwl_trans *trans, struct iwl_tx_queue *txq,
- enum dma_data_direction dma_dir);
-int iwl_tx_queue_reclaim(struct iwl_trans *trans, int txq_id, int index,
- struct sk_buff_head *skbs);
-int iwl_queue_space(const struct iwl_queue *q);
-
+int iwl_trans_pcie_tx(struct iwl_trans *trans, struct sk_buff *skb,
+ struct iwl_device_cmd *dev_cmd, int txq_id);
+void iwl_pcie_txq_inc_wr_ptr(struct iwl_trans *trans, struct iwl_txq *txq);
+int iwl_trans_pcie_send_hcmd(struct iwl_trans *trans, struct iwl_host_cmd *cmd);
+void iwl_pcie_hcmd_complete(struct iwl_trans *trans,
+ struct iwl_rx_cmd_buffer *rxb, int handler_status);
+void iwl_trans_pcie_reclaim(struct iwl_trans *trans, int txq_id, int ssn,
+ struct sk_buff_head *skbs);
/*****************************************************
* Error handling
******************************************************/
-int iwl_dump_fh(struct iwl_trans *trans, char **buf);
-void iwl_dump_csr(struct iwl_trans *trans);
+int iwl_pcie_dump_fh(struct iwl_trans *trans, char **buf);
+void iwl_pcie_dump_csr(struct iwl_trans *trans);
/*****************************************************
* Helpers
@@ -388,7 +399,7 @@ static inline void iwl_enable_rfkill_int(struct iwl_trans *trans)
}
static inline void iwl_wake_queue(struct iwl_trans *trans,
- struct iwl_tx_queue *txq)
+ struct iwl_txq *txq)
{
struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans);
@@ -399,7 +410,7 @@ static inline void iwl_wake_queue(struct iwl_trans *trans,
}
static inline void iwl_stop_queue(struct iwl_trans *trans,
- struct iwl_tx_queue *txq)
+ struct iwl_txq *txq)
{
struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans);
@@ -411,7 +422,7 @@ static inline void iwl_stop_queue(struct iwl_trans *trans,
txq->q.id);
}
-static inline int iwl_queue_used(const struct iwl_queue *q, int i)
+static inline bool iwl_queue_used(const struct iwl_queue *q, int i)
{
return q->write_ptr >= q->read_ptr ?
(i >= q->read_ptr && i < q->write_ptr) :
@@ -423,8 +434,8 @@ static inline u8 get_cmd_index(struct iwl_queue *q, u32 index)
return index & (q->n_window - 1);
}
-static inline const char *
-trans_pcie_get_cmd_string(struct iwl_trans_pcie *trans_pcie, u8 cmd)
+static inline const char *get_cmd_string(struct iwl_trans_pcie *trans_pcie,
+ u8 cmd)
{
if (!trans_pcie->command_names || !trans_pcie->command_names[cmd])
return "UNKNOWN";
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.