#define IWL49_NUM_QUEUES 16
#define IWL49_NUM_AMPDU_QUEUES 8
-#define IWL_TX_DMA_MASK (DMA_BIT_MASK(36) & ~0x3)
-#define IWL_NUM_OF_TBS 20
-
-static inline u8 iwl_get_dma_hi_addr(dma_addr_t addr)
-{
- return (sizeof(addr) > sizeof(u32) ? (addr >> 16) >> 16 : 0) & 0xF;
-}
-/**
- * struct iwl_tfd_tb transmit buffer descriptor within transmit frame descriptor
- *
- * This structure contains dma address and length of transmission address
- *
- * @lo: low [31:0] portion of the dma address of TX buffer
- * every even is unaligned on 16 bit boundary
- * @hi_n_len 0-3 [35:32] portion of dma
- * 4-16 length of the tx buffer
- */
-struct iwl_tfd_tb {
- __le32 lo;
- __le16 hi_n_len;
-} __attribute__((packed));
-
-/**
- * struct iwl_tfd
- *
- * Transmit Frame Descriptor (TFD)
- *
- * @ __reserved1[3] reserved
- * @ num_tbs 0-5 number of active tbs
- * 6-7 padding (not used)
- * @ tbs[20] transmit frame buffer descriptors
- * @ __pad padding
- *
- * Each Tx queue uses a circular buffer of 256 TFDs stored in host DRAM.
- * Both driver and device share these circular buffers, each of which must be
- * contiguous 256 TFDs x 128 bytes-per-TFD = 32 KBytes
- *
- * Driver must indicate the physical address of the base of each
- * circular buffer via the FH_MEM_CBBC_QUEUE registers.
- *
- * Each TFD contains pointer/size information for up to 20 data buffers
- * in host DRAM. These buffers collectively contain the (one) frame described
- * by the TFD. Each buffer must be a single contiguous block of memory within
- * itself, but buffers may be scattered in host DRAM. Each buffer has max size
- * of (4K - 4). The concatenates all of a TFD's buffers into a single
- * Tx frame, up to 8 KBytes in size.
- *
- * A maximum of 255 (not 256!) TFDs may be on a queue waiting for Tx.
- *
- * Bit fields in the control dword (val0):
- */
-struct iwl_tfd {
- u8 __reserved1[3];
- u8 num_tbs;
- struct iwl_tfd_tb tbs[IWL_NUM_OF_TBS];
- __le32 __pad;
-} __attribute__ ((packed));
-
/**
* struct iwl4965_schedq_bc_tbl
* padding puts each byte count table on a 1024-byte boundary;
* 4965 assumes tables are separated by 1024 bytes.
*/
-struct iwl4965_schedq_bc_tbl {
+struct iwl4965_scd_bc_tbl {
__le16 tfd_offset[TFD_QUEUE_BC_SIZE];
u8 pad[1024 - (TFD_QUEUE_BC_SIZE) * sizeof(__le16)];
} __attribute__ ((packed));
-
-/**
- * struct iwl4965_shared - handshake area for Tx and Rx
- *
- * For convenience in allocating memory, this structure combines 2 areas of
- * DRAM which must be shared between driver and 4965. These do not need to
- * be combined, if better allocation would result from keeping them separate:
- *
- * 1) The Tx byte count tables occupy 1024 bytes each (16 KBytes total for
- * 16 queues). Driver uses SCD_DRAM_BASE_ADDR to tell 4965 where to find
- * the first of these tables. 4965 assumes tables are 1024 bytes apart.
- *
- * 2) The Rx status (val0 and val1) occupies only 8 bytes. Driver uses
- * FH_RSCSR_CHNL0_STTS_WPTR_REG to tell 4965 where to find this area.
- * Driver reads val0 to determine the latest Receive Buffer Descriptor (RBD)
- * that has been filled by the 4965.
- *
- * Bit fields val0:
- * 31-12: Not used
- * 11- 0: Index of last filled Rx buffer descriptor (4965 writes, driver reads)
- *
- * Bit fields val1:
- * 31- 0: Not used
- */
-struct iwl4965_shared {
- struct iwl4965_schedq_bc_tbl queues_bc_tbls[IWL49_NUM_QUEUES];
-} __attribute__ ((packed));
-
-#endif /* __iwl4965_4965_hw_h__ */
+#endif /* !__iwl_4965_hw_h__ */
/* Tel 4965 where to find Tx byte count tables */
iwl_write_prph(priv, IWL49_SCD_DRAM_BASE_ADDR,
- (priv->shared_phys +
- offsetof(struct iwl4965_shared, queues_bc_tbls)) >> 10);
+ priv->scd_bc_tbls.dma >> 10);
/* Disable chain mode for all queues */
iwl_write_prph(priv, IWL49_SCD_QUEUECHAIN_SEL, 0);
}
priv->hw_params.max_txq_num = priv->cfg->mod_params->num_of_queues;
+ priv->hw_params.scd_bc_tbls_size =
+ IWL49_NUM_QUEUES * sizeof(struct iwl4965_scd_bc_tbl);
priv->hw_params.max_stations = IWL4965_STATION_COUNT;
priv->hw_params.bcast_sta_id = IWL4965_BROADCAST_ID;
priv->hw_params.max_data_size = IWL49_RTC_DATA_SIZE;
}
#endif
-static int iwl4965_alloc_shared_mem(struct iwl_priv *priv)
-{
- priv->shared_virt = pci_alloc_consistent(priv->pci_dev,
- sizeof(struct iwl4965_shared),
- &priv->shared_phys);
- if (!priv->shared_virt)
- return -ENOMEM;
-
- memset(priv->shared_virt, 0, sizeof(struct iwl4965_shared));
-
- return 0;
-}
-
-static void iwl4965_free_shared_mem(struct iwl_priv *priv)
-{
- if (priv->shared_virt)
- pci_free_consistent(priv->pci_dev,
- sizeof(struct iwl4965_shared),
- priv->shared_virt,
- priv->shared_phys);
-}
-
/**
* iwl4965_txq_update_byte_cnt_tbl - Set up entry in Tx byte-count array
*/
struct iwl_tx_queue *txq,
u16 byte_cnt)
{
- struct iwl4965_shared *shared_data = priv->shared_virt;
+ struct iwl4965_scd_bc_tbl *scd_bc_tbl = priv->scd_bc_tbls.addr;
int txq_id = txq->q.id;
int write_ptr = txq->q.write_ptr;
int len = byte_cnt + IWL_TX_CRC_SIZE + IWL_TX_DELIMITER_SIZE;
bc_ent = cpu_to_le16(len & 0xFFF);
/* Set up byte count within first 256 entries */
- shared_data->queues_bc_tbls[txq_id].tfd_offset[write_ptr] = bc_ent;
+ scd_bc_tbl[txq_id].tfd_offset[write_ptr] = bc_ent;
/* If within first 64 entries, duplicate at end */
if (write_ptr < TFD_QUEUE_SIZE_BC_DUP)
- shared_data->queues_bc_tbls[txq_id].
+ scd_bc_tbl[txq_id].
tfd_offset[TFD_QUEUE_SIZE_MAX + write_ptr] = bc_ent;
}
static struct iwl_lib_ops iwl4965_lib = {
.set_hw_params = iwl4965_hw_set_hw_params,
- .alloc_shared_mem = iwl4965_alloc_shared_mem,
- .free_shared_mem = iwl4965_free_shared_mem,
.txq_update_byte_cnt_tbl = iwl4965_txq_update_byte_cnt_tbl,
.txq_set_sched = iwl4965_txq_set_sched,
.txq_agg_enable = iwl4965_txq_agg_enable,
* @tfd_offset 0-12 - tx command byte count
* 12-16 - station index
*/
-struct iwl5000_schedq_bc_tbl {
+struct iwl5000_scd_bc_tbl {
__le16 tfd_offset[TFD_QUEUE_BC_SIZE];
} __attribute__ ((packed));
-/**
- * struct iwl5000_shared
- */
-struct iwl5000_shared {
- struct iwl5000_schedq_bc_tbl queues_bc_tbls[IWL50_NUM_QUEUES];
-} __attribute__ ((packed));
#endif /* __iwl_5000_hw_h__ */
iwl_write_targ_mem(priv, a, 0);
iwl_write_prph(priv, IWL50_SCD_DRAM_BASE_ADDR,
- (priv->shared_phys +
- offsetof(struct iwl5000_shared, queues_bc_tbls)) >> 10);
+ priv->scd_bc_tbls.dma >> 10);
iwl_write_prph(priv, IWL50_SCD_QUEUECHAIN_SEL,
- IWL50_SCD_QUEUECHAIN_SEL_ALL(
- priv->hw_params.max_txq_num));
+ IWL50_SCD_QUEUECHAIN_SEL_ALL(priv->hw_params.max_txq_num));
iwl_write_prph(priv, IWL50_SCD_AGGR_SEL, 0);
/* initiate the queues */
}
priv->hw_params.max_txq_num = priv->cfg->mod_params->num_of_queues;
+ priv->hw_params.scd_bc_tbls_size =
+ IWL50_NUM_QUEUES * sizeof(struct iwl5000_scd_bc_tbl);
priv->hw_params.max_stations = IWL5000_STATION_COUNT;
priv->hw_params.bcast_sta_id = IWL5000_BROADCAST_ID;
priv->hw_params.max_data_size = IWL50_RTC_DATA_SIZE;
return 0;
}
-static int iwl5000_alloc_shared_mem(struct iwl_priv *priv)
-{
- priv->shared_virt = pci_alloc_consistent(priv->pci_dev,
- sizeof(struct iwl5000_shared),
- &priv->shared_phys);
- if (!priv->shared_virt)
- return -ENOMEM;
-
- memset(priv->shared_virt, 0, sizeof(struct iwl5000_shared));
-
- return 0;
-}
-
-static void iwl5000_free_shared_mem(struct iwl_priv *priv)
-{
- if (priv->shared_virt)
- pci_free_consistent(priv->pci_dev,
- sizeof(struct iwl5000_shared),
- priv->shared_virt,
- priv->shared_phys);
-}
-
/**
* iwl5000_txq_update_byte_cnt_tbl - Set up entry in Tx byte-count array
*/
struct iwl_tx_queue *txq,
u16 byte_cnt)
{
- struct iwl5000_shared *shared_data = priv->shared_virt;
+ struct iwl5000_scd_bc_tbl *scd_bc_tbl = priv->scd_bc_tbls.addr;
int write_ptr = txq->q.write_ptr;
int txq_id = txq->q.id;
u8 sec_ctl = 0;
bc_ent = cpu_to_le16((len & 0xFFF) | (sta_id << 12));
- shared_data->queues_bc_tbls[txq_id].tfd_offset[write_ptr] = bc_ent;
+ scd_bc_tbl[txq_id].tfd_offset[write_ptr] = bc_ent;
if (txq->q.write_ptr < TFD_QUEUE_SIZE_BC_DUP)
- shared_data->queues_bc_tbls[txq_id].
+ scd_bc_tbl[txq_id].
tfd_offset[TFD_QUEUE_SIZE_MAX + write_ptr] = bc_ent;
}
static void iwl5000_txq_inval_byte_cnt_tbl(struct iwl_priv *priv,
struct iwl_tx_queue *txq)
{
- struct iwl5000_shared *shared_data = priv->shared_virt;
+ struct iwl5000_scd_bc_tbl *scd_bc_tbl = priv->scd_bc_tbls.addr;
int txq_id = txq->q.id;
int read_ptr = txq->q.read_ptr;
u8 sta_id = 0;
sta_id = txq->cmd[read_ptr]->cmd.tx.sta_id;
bc_ent = cpu_to_le16(1 | (sta_id << 12));
- shared_data->queues_bc_tbls[txq_id].
- tfd_offset[read_ptr] = bc_ent;
+ scd_bc_tbl[txq_id].tfd_offset[read_ptr] = bc_ent;
if (txq->q.write_ptr < TFD_QUEUE_SIZE_BC_DUP)
- shared_data->queues_bc_tbls[txq_id].
+ scd_bc_tbl[txq_id].
tfd_offset[TFD_QUEUE_SIZE_MAX + read_ptr] = bc_ent;
}
static struct iwl_lib_ops iwl5000_lib = {
.set_hw_params = iwl5000_hw_set_hw_params,
- .alloc_shared_mem = iwl5000_alloc_shared_mem,
- .free_shared_mem = iwl5000_free_shared_mem,
.txq_update_byte_cnt_tbl = iwl5000_txq_update_byte_cnt_tbl,
.txq_inval_byte_cnt_tbl = iwl5000_txq_inval_byte_cnt_tbl,
.txq_set_sched = iwl5000_txq_set_sched,
priv->cfg->ops->lib->apm_ops.stop(priv);
else
priv->cfg->ops->lib->apm_ops.reset(priv);
- priv->cfg->ops->lib->free_shared_mem(priv);
-
exit:
memset(&priv->card_alive, 0, sizeof(struct iwl_alive_resp));
iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
- ret = priv->cfg->ops->lib->alloc_shared_mem(priv);
- if (ret) {
- IWL_ERROR("Unable to allocate shared memory\n");
- return ret;
- }
-
ret = iwl_hw_nic_init(priv);
if (ret) {
IWL_ERROR("Unable to init nic\n");
}
EXPORT_SYMBOL(iwl_hw_detect);
-/* Tell nic where to find the "keep warm" buffer */
-int iwl_kw_init(struct iwl_priv *priv)
-{
- unsigned long flags;
- int ret;
-
- spin_lock_irqsave(&priv->lock, flags);
- ret = iwl_grab_nic_access(priv);
- if (ret)
- goto out;
-
- iwl_write_direct32(priv, FH_KW_MEM_ADDR_REG,
- priv->kw.dma_addr >> 4);
- iwl_release_nic_access(priv);
-out:
- spin_unlock_irqrestore(&priv->lock, flags);
- return ret;
-}
-
-int iwl_kw_alloc(struct iwl_priv *priv)
-{
- struct pci_dev *dev = priv->pci_dev;
- struct iwl_kw *kw = &priv->kw;
-
- kw->size = IWL_KW_SIZE;
- kw->v_addr = pci_alloc_consistent(dev, kw->size, &kw->dma_addr);
- if (!kw->v_addr)
- return -ENOMEM;
-
- return 0;
-}
-
-/**
- * iwl_kw_free - Free the "keep warm" buffer
- */
-void iwl_kw_free(struct iwl_priv *priv)
-{
- struct pci_dev *dev = priv->pci_dev;
- struct iwl_kw *kw = &priv->kw;
-
- if (kw->v_addr) {
- pci_free_consistent(dev, kw->size, kw->v_addr, kw->dma_addr);
- memset(kw, 0, sizeof(*kw));
- }
-}
-
int iwl_hw_nic_init(struct iwl_priv *priv)
{
unsigned long flags;
struct iwl_lib_ops {
/* set hw dependent parameters */
int (*set_hw_params)(struct iwl_priv *priv);
- /* ucode shared memory */
- int (*alloc_shared_mem)(struct iwl_priv *priv);
- void (*free_shared_mem)(struct iwl_priv *priv);
/* Handling TX */
void (*txq_update_byte_cnt_tbl)(struct iwl_priv *priv,
struct iwl_tx_queue *txq,
int iwl_set_hw_params(struct iwl_priv *priv);
int iwl_init_drv(struct iwl_priv *priv);
void iwl_uninit_drv(struct iwl_priv *priv);
-/* "keep warm" functions */
-int iwl_kw_init(struct iwl_priv *priv);
-int iwl_kw_alloc(struct iwl_priv *priv);
-void iwl_kw_free(struct iwl_priv *priv);
/*****************************************************
* RX
/**
* struct iwl_hw_params
* @max_txq_num: Max # Tx queues supported
+ * @scd_bc_tbls_size: size of scheduler byte count tables
* @tx/rx_chains_num: Number of TX/RX chains
* @valid_tx/rx_ant: usable antennas
* @max_rxq_size: Max # Rx frames in Rx queue (must be power-of-2)
*/
struct iwl_hw_params {
u16 max_txq_num;
+ u16 scd_bc_tbls_size;
u8 tx_chains_num;
u8 rx_chains_num;
u8 valid_tx_ant;
struct iwl_priv;
-/* Structures, enum, and defines specific to the 4965 */
-
-#define IWL_KW_SIZE 0x1000 /*4k */
-
-struct iwl_kw {
- dma_addr_t dma_addr;
- void *v_addr;
+struct iwl_dma_ptr {
+ dma_addr_t dma;
+ void *addr;
size_t size;
};
struct iwl_rx_queue rxq;
struct iwl_tx_queue txq[IWL_MAX_NUM_QUEUES];
unsigned long txq_ctx_active_msk;
- struct iwl_kw kw; /* keep warm address */
+ struct iwl_dma_ptr kw; /* keep warm address */
+ struct iwl_dma_ptr scd_bc_tbls;
+
u32 scd_base_addr; /* scheduler sram base address */
unsigned long status;
struct ieee80211_vif *vif;
struct iwl_hw_params hw_params;
- /* driver/uCode shared Tx Byte Counts */
- void *shared_virt;
- /* Physical Pointer to Tx Byte Counts */
- dma_addr_t shared_phys;
+
/* Current association information needed to configure the
* hardware */
__le16 finished_fr_nam;
} __attribute__ ((packed));
+
+
+#define IWL_TX_DMA_MASK DMA_BIT_MASK(36)
+
+#define IWL_NUM_OF_TBS 20
+
+static inline u8 iwl_get_dma_hi_addr(dma_addr_t addr)
+{
+ return (sizeof(addr) > sizeof(u32) ? (addr >> 16) >> 16 : 0) & 0xF;
+}
+/**
+ * struct iwl_tfd_tb transmit buffer descriptor within transmit frame descriptor
+ *
+ * This structure contains dma address and length of transmission address
+ *
+ * @lo: low [31:0] portion of the dma address of TX buffer
+ * every even is unaligned on 16 bit boundary
+ * @hi_n_len 0-3 [35:32] portion of dma
+ * 4-16 length of the tx buffer
+ */
+struct iwl_tfd_tb {
+ __le32 lo;
+ __le16 hi_n_len;
+} __attribute__((packed));
+
+/**
+ * struct iwl_tfd
+ *
+ * Transmit Frame Descriptor (TFD)
+ *
+ * @ __reserved1[3] reserved
+ * @ num_tbs 0-5 number of active tbs
+ * 6-7 padding (not used)
+ * @ tbs[20] transmit frame buffer descriptors
+ * @ __pad padding
+ *
+ * Each Tx queue uses a circular buffer of 256 TFDs stored in host DRAM.
+ * Both driver and device share these circular buffers, each of which must be
+ * contiguous 256 TFDs x 128 bytes-per-TFD = 32 KBytes
+ *
+ * Driver must indicate the physical address of the base of each
+ * circular buffer via the FH_MEM_CBBC_QUEUE registers.
+ *
+ * Each TFD contains pointer/size information for up to 20 data buffers
+ * in host DRAM. These buffers collectively contain the (one) frame described
+ * by the TFD. Each buffer must be a single contiguous block of memory within
+ * itself, but buffers may be scattered in host DRAM. Each buffer has max size
+ * of (4K - 4). The concatenates all of a TFD's buffers into a single
+ * Tx frame, up to 8 KBytes in size.
+ *
+ * A maximum of 255 (not 256!) TFDs may be on a queue waiting for Tx.
+ *
+ * Bit fields in the control dword (val0):
+ */
+struct iwl_tfd {
+ u8 __reserved1[3];
+ u8 num_tbs;
+ struct iwl_tfd_tb tbs[IWL_NUM_OF_TBS];
+ __le32 __pad;
+} __attribute__ ((packed));
+
+
+/* Keep Warm Size */
+#define IWL_KW_SIZE 0x1000 /*4k */
+
#endif /* !__iwl_fh_h__ */
IWL_TX_FIFO_AC3
};
+static inline int iwl_alloc_dma_ptr(struct iwl_priv *priv,
+ struct iwl_dma_ptr *ptr, size_t size)
+{
+ ptr->addr = pci_alloc_consistent(priv->pci_dev, size, &ptr->dma);
+ if (!ptr->addr)
+ return -ENOMEM;
+ ptr->size = size;
+ return 0;
+}
+
+static inline void iwl_free_dma_ptr(struct iwl_priv *priv,
+ struct iwl_dma_ptr *ptr)
+{
+ if (unlikely(!ptr->addr))
+ return;
+
+ pci_free_consistent(priv->pci_dev, ptr->size, ptr->addr, ptr->dma);
+ memset(ptr, 0, sizeof(*ptr));
+}
+
static inline dma_addr_t iwl_tfd_tb_get_addr(struct iwl_tfd *tfd, u8 idx)
{
struct iwl_tfd_tb *tb = &tfd->tbs[idx];
else
iwl_tx_queue_free(priv, txq_id);
- /* Keep-warm buffer */
- iwl_kw_free(priv);
+ iwl_free_dma_ptr(priv, &priv->kw);
+
+ iwl_free_dma_ptr(priv, &priv->scd_bc_tbls);
}
EXPORT_SYMBOL(iwl_hw_txq_ctx_free);
int txq_id, slots_num;
unsigned long flags;
- iwl_kw_free(priv);
-
/* Free all tx/cmd queues and keep-warm buffer */
iwl_hw_txq_ctx_free(priv);
+ ret = iwl_alloc_dma_ptr(priv, &priv->scd_bc_tbls,
+ priv->hw_params.scd_bc_tbls_size);
+ if (ret) {
+ IWL_ERROR("Scheduler BC Table allocation failed\n");
+ goto error_bc_tbls;
+ }
/* Alloc keep-warm buffer */
- ret = iwl_kw_alloc(priv);
+ ret = iwl_alloc_dma_ptr(priv, &priv->kw, IWL_KW_SIZE);
if (ret) {
IWL_ERROR("Keep Warm allocation failed\n");
goto error_kw;
/* Turn off all Tx DMA fifos */
priv->cfg->ops->lib->txq_set_sched(priv, 0);
+ /* Tell NIC where to find the "keep warm" buffer */
+ iwl_write_direct32(priv, FH_KW_MEM_ADDR_REG, priv->kw.dma >> 4);
+
iwl_release_nic_access(priv);
spin_unlock_irqrestore(&priv->lock, flags);
- /* Tell nic where to find the keep-warm buffer */
- ret = iwl_kw_init(priv);
- if (ret) {
- IWL_ERROR("kw_init failed\n");
- goto error_reset;
- }
/* Alloc and init all Tx queues, including the command queue (#4) */
for (txq_id = 0; txq_id < priv->hw_params.max_txq_num; txq_id++) {
error:
iwl_hw_txq_ctx_free(priv);
error_reset:
- iwl_kw_free(priv);
+ iwl_free_dma_ptr(priv, &priv->kw);
error_kw:
+ iwl_free_dma_ptr(priv, &priv->scd_bc_tbls);
+ error_bc_tbls:
return ret;
}
projects / linux-2.6-omap-h63xx.git / commitdiff