obj-$(CONFIG_IWLCORE) += iwlcore.o
iwlcore-objs := iwl-core.o iwl-eeprom.o iwl-hcmd.o iwl-power.o
-iwlcore-objs += iwl-rx.o
+iwlcore-objs += iwl-rx.o iwl-tx.o
iwlcore-$(CONFIG_IWLWIFI_DEBUGFS) += iwl-debugfs.o
iwlcore-$(CONFIG_IWLWIFI_LEDS) += iwl-led.o
iwlcore-$(CONFIG_IWLWIFI_RFKILL) += iwl-rfkill.o
#define IWL49_NUM_QUEUES 16
/**
- * struct iwl4965_tfd_frame_data
+ * struct iwl_tfd_frame_data
*
* Describes up to 2 buffers containing (contiguous) portions of a Tx frame.
* Each buffer must be on dword boundary.
* 31-20: Tx buffer 2 length (bytes)
* 19- 0: Tx buffer 2 address bits [35:16]
*/
-struct iwl4965_tfd_frame_data {
+struct iwl_tfd_frame_data {
__le32 tb1_addr;
__le32 val1;
/**
- * struct iwl4965_tfd_frame
+ * struct iwl_tfd_frame
*
* Transmit Frame Descriptor (TFD)
*
*
* A maximum of 255 (not 256!) TFDs may be on a queue waiting for Tx.
*/
-struct iwl4965_tfd_frame {
+struct iwl_tfd_frame {
__le32 val0;
/* __le32 rsvd1:24; */
/* __le32 num_tbs:5; */
#define IWL_num_tbs_SYM val0
/* __le32 rsvd2:1; */
/* __le32 padding:2; */
- struct iwl4965_tfd_frame_data pa[10];
+ struct iwl_tfd_frame_data pa[10];
__le32 reserved;
} __attribute__ ((packed));
/* the rest are 0 by default */
};
-static void iwl4965_hw_card_show_info(struct iwl_priv *priv);
-
#ifdef CONFIG_IWL4965_HT
static const u16 default_tid_to_tx_fifo[] = {
return ret;
}
-static int iwl4965_rx_init(struct iwl_priv *priv, struct iwl_rx_queue *rxq)
-{
- int ret;
- unsigned long flags;
- unsigned int rb_size;
-
- spin_lock_irqsave(&priv->lock, flags);
- ret = iwl_grab_nic_access(priv);
- if (ret) {
- spin_unlock_irqrestore(&priv->lock, flags);
- return ret;
- }
-
- if (priv->cfg->mod_params->amsdu_size_8K)
- rb_size = FH_RCSR_RX_CONFIG_REG_VAL_RB_SIZE_8K;
- else
- rb_size = FH_RCSR_RX_CONFIG_REG_VAL_RB_SIZE_4K;
-
- /* Stop Rx DMA */
- iwl_write_direct32(priv, FH_MEM_RCSR_CHNL0_CONFIG_REG, 0);
-
- /* Reset driver's Rx queue write index */
- iwl_write_direct32(priv, FH_RSCSR_CHNL0_RBDCB_WPTR_REG, 0);
-
- /* Tell device where to find RBD circular buffer in DRAM */
- iwl_write_direct32(priv, FH_RSCSR_CHNL0_RBDCB_BASE_REG,
- rxq->dma_addr >> 8);
-
- /* Tell device where in DRAM to update its Rx status */
- iwl_write_direct32(priv, FH_RSCSR_CHNL0_STTS_WPTR_REG,
- (priv->shared_phys +
- offsetof(struct iwl4965_shared, rb_closed)) >> 4);
-
- /* Enable Rx DMA, enable host interrupt, Rx buffer size 4k, 256 RBDs */
- iwl_write_direct32(priv, FH_MEM_RCSR_CHNL0_CONFIG_REG,
- FH_RCSR_RX_CONFIG_CHNL_EN_ENABLE_VAL |
- FH_RCSR_CHNL0_RX_CONFIG_IRQ_DEST_INT_HOST_VAL |
- rb_size |
- /* 0x10 << 4 | */
- (RX_QUEUE_SIZE_LOG <<
- FH_RCSR_RX_CONFIG_RBDCB_SIZE_BITSHIFT));
-
- /*
- * iwl_write32(priv,CSR_INT_COAL_REG,0);
- */
-
- iwl_release_nic_access(priv);
- spin_unlock_irqrestore(&priv->lock, flags);
-
- return 0;
-}
-
-/* Tell 4965 where to find the "keep warm" buffer */
-static int iwl4965_kw_init(struct iwl_priv *priv)
-{
- unsigned long flags;
- int rc;
-
- spin_lock_irqsave(&priv->lock, flags);
- rc = iwl_grab_nic_access(priv);
- if (rc)
- 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 rc;
-}
-
-static int iwl4965_kw_alloc(struct iwl_priv *priv)
-{
- struct pci_dev *dev = priv->pci_dev;
- struct iwl4965_kw *kw = &priv->kw;
-
- kw->size = IWL4965_KW_SIZE; /* TBW need set somewhere else */
- kw->v_addr = pci_alloc_consistent(dev, kw->size, &kw->dma_addr);
- if (!kw->v_addr)
- return -ENOMEM;
-
- return 0;
-}
-
-/**
- * iwl4965_kw_free - Free the "keep warm" buffer
- */
-static void iwl4965_kw_free(struct iwl_priv *priv)
-{
- struct pci_dev *dev = priv->pci_dev;
- struct iwl4965_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));
- }
-}
-
static int iwl4965_disable_tx_fifo(struct iwl_priv *priv)
{
unsigned long flags;
return 0;
}
-/**
- * iwl4965_txq_ctx_reset - Reset TX queue context
- * Destroys all DMA structures and initialise them again
- *
- * @param priv
- * @return error code
- */
-static int iwl4965_txq_ctx_reset(struct iwl_priv *priv)
-{
- int rc = 0;
- int txq_id, slots_num;
-
- iwl4965_kw_free(priv);
-
- /* Free all tx/cmd queues and keep-warm buffer */
- iwl4965_hw_txq_ctx_free(priv);
-
- /* Alloc keep-warm buffer */
- rc = iwl4965_kw_alloc(priv);
- if (rc) {
- IWL_ERROR("Keep Warm allocation failed");
- goto error_kw;
- }
-
- /* Turn off all Tx DMA fifos */
- rc = priv->cfg->ops->lib->disable_tx_fifo(priv);
- if (unlikely(rc))
- goto error_reset;
-
- /* Tell 4965 where to find the keep-warm buffer */
- rc = iwl4965_kw_init(priv);
- if (rc) {
- IWL_ERROR("kw_init failed\n");
- goto error_reset;
- }
-
- /* Alloc and init all (default 16) Tx queues,
- * including the command queue (#4) */
- for (txq_id = 0; txq_id < priv->hw_params.max_txq_num; txq_id++) {
- slots_num = (txq_id == IWL_CMD_QUEUE_NUM) ?
- TFD_CMD_SLOTS : TFD_TX_CMD_SLOTS;
- rc = iwl4965_tx_queue_init(priv, &priv->txq[txq_id], slots_num,
- txq_id);
- if (rc) {
- IWL_ERROR("Tx %d queue init failed\n", txq_id);
- goto error;
- }
- }
-
- return rc;
-
- error:
- iwl4965_hw_txq_ctx_free(priv);
- error_reset:
- iwl4965_kw_free(priv);
- error_kw:
- return rc;
-}
-
static int iwl4965_apm_init(struct iwl_priv *priv)
{
unsigned long flags;
spin_unlock_irqrestore(&priv->lock, flags);
}
-int iwl4965_hw_nic_init(struct iwl_priv *priv)
-{
- unsigned long flags;
- struct iwl_rx_queue *rxq = &priv->rxq;
- int ret;
-
- /* nic_init */
- priv->cfg->ops->lib->apm_ops.init(priv);
-
- spin_lock_irqsave(&priv->lock, flags);
- iwl_write32(priv, CSR_INT_COALESCING, 512 / 32);
- spin_unlock_irqrestore(&priv->lock, flags);
-
- ret = priv->cfg->ops->lib->apm_ops.set_pwr_src(priv, IWL_PWR_SRC_VMAIN);
-
- priv->cfg->ops->lib->apm_ops.config(priv);
-
- iwl4965_hw_card_show_info(priv);
-
- /* end nic_init */
-
- /* Allocate the RX queue, or reset if it is already allocated */
- if (!rxq->bd) {
- ret = iwl_rx_queue_alloc(priv);
- if (ret) {
- IWL_ERROR("Unable to initialize Rx queue\n");
- return -ENOMEM;
- }
- } else
- iwl_rx_queue_reset(priv, rxq);
-
- iwl_rx_replenish(priv);
-
- iwl4965_rx_init(priv, rxq);
-
- spin_lock_irqsave(&priv->lock, flags);
-
- rxq->need_update = 1;
- iwl_rx_queue_update_write_ptr(priv, rxq);
-
- spin_unlock_irqrestore(&priv->lock, flags);
-
- /* Allocate and init all Tx and Command queues */
- ret = iwl4965_txq_ctx_reset(priv);
- if (ret)
- return ret;
-
- set_bit(STATUS_INIT, &priv->status);
-
- return 0;
-}
-
int iwl4965_hw_nic_stop_master(struct iwl_priv *priv)
{
int rc = 0;
}
/* Deallocate memory for all Tx queues */
- iwl4965_hw_txq_ctx_free(priv);
+ iwl_hw_txq_ctx_free(priv);
}
int iwl4965_hw_nic_reset(struct iwl_priv *priv)
return 0;
}
-/**
- * iwl4965_hw_txq_ctx_free - Free TXQ Context
- *
- * Destroy all TX DMA queues and structures
- */
-void iwl4965_hw_txq_ctx_free(struct iwl_priv *priv)
-{
- int txq_id;
-
- /* Tx queues */
- for (txq_id = 0; txq_id < priv->hw_params.max_txq_num; txq_id++)
- iwl4965_tx_queue_free(priv, &priv->txq[txq_id]);
-
- /* Keep-warm buffer */
- iwl4965_kw_free(priv);
-}
-
-/**
- * iwl4965_hw_txq_free_tfd - Free all chunks referenced by TFD [txq->q.read_ptr]
- *
- * Does NOT advance any TFD circular buffer read/write indexes
- * Does NOT free the TFD itself (which is within circular buffer)
- */
-int iwl4965_hw_txq_free_tfd(struct iwl_priv *priv, struct iwl4965_tx_queue *txq)
-{
- struct iwl4965_tfd_frame *bd_tmp = (struct iwl4965_tfd_frame *)&txq->bd[0];
- struct iwl4965_tfd_frame *bd = &bd_tmp[txq->q.read_ptr];
- struct pci_dev *dev = priv->pci_dev;
- int i;
- int counter = 0;
- int index, is_odd;
-
- /* Host command buffers stay mapped in memory, nothing to clean */
- if (txq->q.id == IWL_CMD_QUEUE_NUM)
- return 0;
-
- /* Sanity check on number of chunks */
- counter = IWL_GET_BITS(*bd, num_tbs);
- if (counter > MAX_NUM_OF_TBS) {
- IWL_ERROR("Too many chunks: %i\n", counter);
- /* @todo issue fatal error, it is quite serious situation */
- return 0;
- }
-
- /* Unmap chunks, if any.
- * TFD info for odd chunks is different format than for even chunks. */
- for (i = 0; i < counter; i++) {
- index = i / 2;
- is_odd = i & 0x1;
-
- if (is_odd)
- pci_unmap_single(
- dev,
- IWL_GET_BITS(bd->pa[index], tb2_addr_lo16) |
- (IWL_GET_BITS(bd->pa[index],
- tb2_addr_hi20) << 16),
- IWL_GET_BITS(bd->pa[index], tb2_len),
- PCI_DMA_TODEVICE);
-
- else if (i > 0)
- pci_unmap_single(dev,
- le32_to_cpu(bd->pa[index].tb1_addr),
- IWL_GET_BITS(bd->pa[index], tb1_len),
- PCI_DMA_TODEVICE);
-
- /* Free SKB, if any, for this chunk */
- if (txq->txb[txq->q.read_ptr].skb[i]) {
- struct sk_buff *skb = txq->txb[txq->q.read_ptr].skb[i];
-
- dev_kfree_skb(skb);
- txq->txb[txq->q.read_ptr].skb[i] = NULL;
- }
- }
- return 0;
-}
-
/* set card power command */
static int iwl4965_set_power(struct iwl_priv *priv,
void *cmd)
return (sizeof(*tx_beacon_cmd) + frame_size);
}
-/*
- * Tell 4965 where to find circular buffer of Tx Frame Descriptors for
- * given Tx queue, and enable the DMA channel used for that queue.
- *
- * 4965 supports up to 16 Tx queues in DRAM, mapped to up to 8 Tx DMA
- * channels supported in hardware.
- */
-int iwl4965_hw_tx_queue_init(struct iwl_priv *priv, struct iwl4965_tx_queue *txq)
-{
- int rc;
- unsigned long flags;
- int txq_id = txq->q.id;
-
- spin_lock_irqsave(&priv->lock, flags);
- rc = iwl_grab_nic_access(priv);
- if (rc) {
- spin_unlock_irqrestore(&priv->lock, flags);
- return rc;
- }
-
- /* Circular buffer (TFD queue in DRAM) physical base address */
- iwl_write_direct32(priv, FH_MEM_CBBC_QUEUE(txq_id),
- txq->q.dma_addr >> 8);
-
- /* Enable DMA channel, using same id as for TFD queue */
- iwl_write_direct32(
- priv, FH_TCSR_CHNL_TX_CONFIG_REG(txq_id),
- FH_TCSR_TX_CONFIG_REG_VAL_DMA_CHNL_ENABLE |
- FH_TCSR_TX_CONFIG_REG_VAL_DMA_CREDIT_ENABLE_VAL);
- iwl_release_nic_access(priv);
- spin_unlock_irqrestore(&priv->lock, flags);
-
- return 0;
-}
-
int iwl4965_hw_txq_attach_buf_to_tfd(struct iwl_priv *priv, void *ptr,
dma_addr_t addr, u16 len)
{
int index, is_odd;
- struct iwl4965_tfd_frame *tfd = ptr;
+ struct iwl_tfd_frame *tfd = ptr;
u32 num_tbs = IWL_GET_BITS(*tfd, num_tbs);
/* Each TFD can point to a maximum 20 Tx buffers */
return 0;
}
-static void iwl4965_hw_card_show_info(struct iwl_priv *priv)
-{
- u16 hw_version = iwl_eeprom_query16(priv, EEPROM_4965_BOARD_REVISION);
-
- IWL_DEBUG_INFO("4965ABGN HW Version %u.%u.%u\n",
- ((hw_version >> 8) & 0x0F),
- ((hw_version >> 8) >> 4), (hw_version & 0x00FF));
-
- IWL_DEBUG_INFO("4965ABGN PBA Number %.16s\n",
- &priv->eeprom[EEPROM_4965_BOARD_PBA]);
-}
-
static int iwl4965_alloc_shared_mem(struct iwl_priv *priv)
{
priv->shared_virt = pci_alloc_consistent(priv->pci_dev,
.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,
- .hw_nic_init = iwl4965_hw_nic_init,
.disable_tx_fifo = iwl4965_disable_tx_fifo,
.rx_handler_setup = iwl4965_rx_handler_setup,
.is_valid_rtc_data_addr = iwl4965_hw_valid_rtc_data_addr,
}
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 iwl4965_kw *kw = &priv->kw;
+
+ kw->size = IWL4965_KW_SIZE; /* TBW need set somewhere else */
+ 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 iwl4965_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_rx_queue *rxq = &priv->rxq;
+ int ret;
+
+ /* nic_init */
+ priv->cfg->ops->lib->apm_ops.init(priv);
+
+ spin_lock_irqsave(&priv->lock, flags);
+ iwl_write32(priv, CSR_INT_COALESCING, 512 / 32);
+ spin_unlock_irqrestore(&priv->lock, flags);
+
+ ret = priv->cfg->ops->lib->apm_ops.set_pwr_src(priv, IWL_PWR_SRC_VMAIN);
+
+ priv->cfg->ops->lib->apm_ops.config(priv);
+
+ /* Allocate the RX queue, or reset if it is already allocated */
+ if (!rxq->bd) {
+ ret = iwl_rx_queue_alloc(priv);
+ if (ret) {
+ IWL_ERROR("Unable to initialize Rx queue\n");
+ return -ENOMEM;
+ }
+ } else
+ iwl_rx_queue_reset(priv, rxq);
+
+ iwl_rx_replenish(priv);
+
+ iwl_rx_init(priv, rxq);
+
+ spin_lock_irqsave(&priv->lock, flags);
+
+ rxq->need_update = 1;
+ iwl_rx_queue_update_write_ptr(priv, rxq);
+
+ spin_unlock_irqrestore(&priv->lock, flags);
+
+ /* Allocate and init all Tx and Command queues */
+ ret = iwl_txq_ctx_reset(priv);
+ if (ret)
+ return ret;
+
+ set_bit(STATUS_INIT, &priv->status);
+
+ return 0;
+}
+EXPORT_SYMBOL(iwl_hw_nic_init);
+
/**
* iwlcore_clear_stations_table - Clear the driver's station table
*
u16 byte_cnt);
/* setup Rx handler */
void (*rx_handler_setup)(struct iwl_priv *priv);
- /* nic init */
- int (*hw_nic_init)(struct iwl_priv *priv);
/* nic Tx fifo handling */
int (*disable_tx_fifo)(struct iwl_priv *priv);
/* alive notification */
void iwl_set_rxon_ht(struct iwl_priv *priv, struct iwl_ht_info *ht_info);
u8 iwl_is_fat_tx_allowed(struct iwl_priv *priv,
struct ieee80211_ht_info *sta_ht_inf);
+int iwl_hw_nic_init(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_rx_queue *q);
void iwl_rx_queue_reset(struct iwl_priv *priv, struct iwl_rx_queue *rxq);
void iwl_rx_replenish(struct iwl_priv *priv);
+int iwl_rx_init(struct iwl_priv *priv, struct iwl_rx_queue *rxq);
/* FIXME: remove when TX is moved to iwl core */
int iwl_rx_queue_restock(struct iwl_priv *priv);
int iwl_rx_queue_space(const struct iwl_rx_queue *q);
void iwl_rx_allocate(struct iwl_priv *priv);
+/*****************************************************
+* TX
+******************************************************/
+int iwl_txq_ctx_reset(struct iwl_priv *priv);
+/* FIXME: remove when free Tx is fully merged into iwlcore */
+int iwl_hw_txq_free_tfd(struct iwl_priv *priv, struct iwl4965_tx_queue *txq);
+void iwl_hw_txq_ctx_free(struct iwl_priv *priv);
+
/*****************************************************
* S e n d i n g H o s t C o m m a n d s *
*****************************************************/
*/
struct iwl4965_tx_queue {
struct iwl4965_queue q;
- struct iwl4965_tfd_frame *bd;
+ struct iwl_tfd_frame *bd;
struct iwl_cmd *cmd;
dma_addr_t dma_addr_cmd;
struct iwl4965_tx_info *txb;
struct ieee80211_hdr *header);
extern int iwl4965_calc_db_from_ratio(int sig_ratio);
extern int iwl4965_calc_sig_qual(int rssi_dbm, int noise_dbm);
-extern int iwl4965_tx_queue_init(struct iwl_priv *priv,
- struct iwl4965_tx_queue *txq, int count, u32 id);
-extern void iwl4965_tx_queue_free(struct iwl_priv *priv, struct iwl4965_tx_queue *txq);
extern unsigned int iwl4965_fill_beacon_frame(struct iwl_priv *priv,
struct ieee80211_hdr *hdr,
const u8 *dest, int left);
extern void iwl4965_hw_cancel_deferred_work(struct iwl_priv *priv);
extern int iwl4965_hw_rxq_stop(struct iwl_priv *priv);
extern int iwl4965_hw_set_hw_params(struct iwl_priv *priv);
-extern int iwl4965_hw_nic_init(struct iwl_priv *priv);
extern int iwl4965_hw_nic_stop_master(struct iwl_priv *priv);
-extern void iwl4965_hw_txq_ctx_free(struct iwl_priv *priv);
extern void iwl4965_hw_txq_ctx_stop(struct iwl_priv *priv);
extern int iwl4965_hw_nic_reset(struct iwl_priv *priv);
extern int iwl4965_hw_txq_attach_buf_to_tfd(struct iwl_priv *priv, void *tfd,
dma_addr_t addr, u16 len);
-extern int iwl4965_hw_txq_free_tfd(struct iwl_priv *priv, struct iwl4965_tx_queue *txq);
extern int iwl4965_hw_get_temperature(struct iwl_priv *priv);
-extern int iwl4965_hw_tx_queue_init(struct iwl_priv *priv,
- struct iwl4965_tx_queue *txq);
extern unsigned int iwl4965_hw_get_beacon_cmd(struct iwl_priv *priv,
struct iwl4965_frame *frame, u8 rate);
extern int iwl4965_hw_get_rx_read(struct iwl_priv *priv);
}
EXPORT_SYMBOL(iwl_rx_queue_reset);
+int iwl_rx_init(struct iwl_priv *priv, struct iwl_rx_queue *rxq)
+{
+ int ret;
+ unsigned long flags;
+ unsigned int rb_size;
+
+ spin_lock_irqsave(&priv->lock, flags);
+ ret = iwl_grab_nic_access(priv);
+ if (ret) {
+ spin_unlock_irqrestore(&priv->lock, flags);
+ return ret;
+ }
+
+ if (priv->cfg->mod_params->amsdu_size_8K)
+ rb_size = FH_RCSR_RX_CONFIG_REG_VAL_RB_SIZE_8K;
+ else
+ rb_size = FH_RCSR_RX_CONFIG_REG_VAL_RB_SIZE_4K;
+
+ /* Stop Rx DMA */
+ iwl_write_direct32(priv, FH_MEM_RCSR_CHNL0_CONFIG_REG, 0);
+
+ /* Reset driver's Rx queue write index */
+ iwl_write_direct32(priv, FH_RSCSR_CHNL0_RBDCB_WPTR_REG, 0);
+
+ /* Tell device where to find RBD circular buffer in DRAM */
+ iwl_write_direct32(priv, FH_RSCSR_CHNL0_RBDCB_BASE_REG,
+ rxq->dma_addr >> 8);
+
+ /* Tell device where in DRAM to update its Rx status */
+ iwl_write_direct32(priv, FH_RSCSR_CHNL0_STTS_WPTR_REG,
+ (priv->shared_phys +
+ offsetof(struct iwl4965_shared, rb_closed)) >> 4);
+
+ /* Enable Rx DMA, enable host interrupt, Rx buffer size 4k, 256 RBDs */
+ iwl_write_direct32(priv, FH_MEM_RCSR_CHNL0_CONFIG_REG,
+ FH_RCSR_RX_CONFIG_CHNL_EN_ENABLE_VAL |
+ FH_RCSR_CHNL0_RX_CONFIG_IRQ_DEST_INT_HOST_VAL |
+ rb_size |
+ /* 0x10 << 4 | */
+ (RX_QUEUE_SIZE_LOG <<
+ FH_RCSR_RX_CONFIG_RBDCB_SIZE_BITSHIFT));
+
+ /*
+ * iwl_write32(priv,CSR_INT_COAL_REG,0);
+ */
+
+ iwl_release_nic_access(priv);
+ spin_unlock_irqrestore(&priv->lock, flags);
+
+ return 0;
+}
+
--- /dev/null
+/******************************************************************************
+ *
+ * Copyright(c) 2003 - 2008 Intel Corporation. All rights reserved.
+ *
+ * Portions of this file are derived from the ipw3945 project, as well
+ * as portions of the ieee80211 subsystem header files.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of version 2 of the GNU General Public License as
+ * published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License along with
+ * this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA
+ *
+ * The full GNU General Public License is included in this distribution in the
+ * file called LICENSE.
+ *
+ * Contact Information:
+ * James P. Ketrenos <ipw2100-admin@linux.intel.com>
+ * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
+ *
+ *****************************************************************************/
+
+#include <net/mac80211.h>
+#include "iwl-eeprom.h"
+#include "iwl-dev.h"
+#include "iwl-core.h"
+#include "iwl-sta.h"
+#include "iwl-io.h"
+#include "iwl-helpers.h"
+
+/**
+ * iwl_hw_txq_free_tfd - Free all chunks referenced by TFD [txq->q.read_ptr]
+ *
+ * Does NOT advance any TFD circular buffer read/write indexes
+ * Does NOT free the TFD itself (which is within circular buffer)
+ */
+int iwl_hw_txq_free_tfd(struct iwl_priv *priv, struct iwl4965_tx_queue *txq)
+{
+ struct iwl_tfd_frame *bd_tmp = (struct iwl_tfd_frame *)&txq->bd[0];
+ struct iwl_tfd_frame *bd = &bd_tmp[txq->q.read_ptr];
+ struct pci_dev *dev = priv->pci_dev;
+ int i;
+ int counter = 0;
+ int index, is_odd;
+
+ /* Host command buffers stay mapped in memory, nothing to clean */
+ if (txq->q.id == IWL_CMD_QUEUE_NUM)
+ return 0;
+
+ /* Sanity check on number of chunks */
+ counter = IWL_GET_BITS(*bd, num_tbs);
+ if (counter > MAX_NUM_OF_TBS) {
+ IWL_ERROR("Too many chunks: %i\n", counter);
+ /* @todo issue fatal error, it is quite serious situation */
+ return 0;
+ }
+
+ /* Unmap chunks, if any.
+ * TFD info for odd chunks is different format than for even chunks. */
+ for (i = 0; i < counter; i++) {
+ index = i / 2;
+ is_odd = i & 0x1;
+
+ if (is_odd)
+ pci_unmap_single(
+ dev,
+ IWL_GET_BITS(bd->pa[index], tb2_addr_lo16) |
+ (IWL_GET_BITS(bd->pa[index],
+ tb2_addr_hi20) << 16),
+ IWL_GET_BITS(bd->pa[index], tb2_len),
+ PCI_DMA_TODEVICE);
+
+ else if (i > 0)
+ pci_unmap_single(dev,
+ le32_to_cpu(bd->pa[index].tb1_addr),
+ IWL_GET_BITS(bd->pa[index], tb1_len),
+ PCI_DMA_TODEVICE);
+
+ /* Free SKB, if any, for this chunk */
+ if (txq->txb[txq->q.read_ptr].skb[i]) {
+ struct sk_buff *skb = txq->txb[txq->q.read_ptr].skb[i];
+
+ dev_kfree_skb(skb);
+ txq->txb[txq->q.read_ptr].skb[i] = NULL;
+ }
+ }
+ return 0;
+}
+EXPORT_SYMBOL(iwl_hw_txq_free_tfd);
+
+/**
+ * iwl_tx_queue_free - Deallocate DMA queue.
+ * @txq: Transmit queue to deallocate.
+ *
+ * Empty queue by removing and destroying all BD's.
+ * Free all buffers.
+ * 0-fill, but do not free "txq" descriptor structure.
+ */
+static void iwl_tx_queue_free(struct iwl_priv *priv,
+ struct iwl4965_tx_queue *txq)
+{
+ struct iwl4965_queue *q = &txq->q;
+ struct pci_dev *dev = priv->pci_dev;
+ int len;
+
+ if (q->n_bd == 0)
+ return;
+
+ /* first, empty all BD's */
+ for (; q->write_ptr != q->read_ptr;
+ q->read_ptr = iwl_queue_inc_wrap(q->read_ptr, q->n_bd))
+ iwl_hw_txq_free_tfd(priv, txq);
+
+ len = sizeof(struct iwl_cmd) * q->n_window;
+ if (q->id == IWL_CMD_QUEUE_NUM)
+ len += IWL_MAX_SCAN_SIZE;
+
+ /* De-alloc array of command/tx buffers */
+ pci_free_consistent(dev, len, txq->cmd, txq->dma_addr_cmd);
+
+ /* De-alloc circular buffer of TFDs */
+ if (txq->q.n_bd)
+ pci_free_consistent(dev, sizeof(struct iwl_tfd_frame) *
+ txq->q.n_bd, txq->bd, txq->q.dma_addr);
+
+ /* De-alloc array of per-TFD driver data */
+ kfree(txq->txb);
+ txq->txb = NULL;
+
+ /* 0-fill queue descriptor structure */
+ memset(txq, 0, sizeof(*txq));
+}
+
+/**
+ * iwl_hw_txq_ctx_free - Free TXQ Context
+ *
+ * Destroy all TX DMA queues and structures
+ */
+void iwl_hw_txq_ctx_free(struct iwl_priv *priv)
+{
+ int txq_id;
+
+ /* Tx queues */
+ for (txq_id = 0; txq_id < priv->hw_params.max_txq_num; txq_id++)
+ iwl_tx_queue_free(priv, &priv->txq[txq_id]);
+
+ /* Keep-warm buffer */
+ iwl_kw_free(priv);
+}
+EXPORT_SYMBOL(iwl_hw_txq_ctx_free);
+
+/**
+ * iwl_queue_init - Initialize queue's high/low-water and read/write indexes
+ */
+static int iwl_queue_init(struct iwl_priv *priv, struct iwl4965_queue *q,
+ int count, int slots_num, u32 id)
+{
+ q->n_bd = count;
+ q->n_window = slots_num;
+ q->id = id;
+
+ /* count must be power-of-two size, otherwise iwl_queue_inc_wrap
+ * and iwl_queue_dec_wrap are broken. */
+ BUG_ON(!is_power_of_2(count));
+
+ /* slots_num must be power-of-two size, otherwise
+ * get_cmd_index is broken. */
+ BUG_ON(!is_power_of_2(slots_num));
+
+ q->low_mark = q->n_window / 4;
+ if (q->low_mark < 4)
+ q->low_mark = 4;
+
+ q->high_mark = q->n_window / 8;
+ if (q->high_mark < 2)
+ q->high_mark = 2;
+
+ q->write_ptr = q->read_ptr = 0;
+
+ return 0;
+}
+
+/**
+ * iwl_tx_queue_alloc - Alloc driver data and TFD CB for one Tx/cmd queue
+ */
+static int iwl_tx_queue_alloc(struct iwl_priv *priv,
+ struct iwl4965_tx_queue *txq, u32 id)
+{
+ struct pci_dev *dev = priv->pci_dev;
+
+ /* Driver private data, only for Tx (not command) queues,
+ * not shared with device. */
+ if (id != IWL_CMD_QUEUE_NUM) {
+ txq->txb = kmalloc(sizeof(txq->txb[0]) *
+ TFD_QUEUE_SIZE_MAX, GFP_KERNEL);
+ if (!txq->txb) {
+ IWL_ERROR("kmalloc for auxiliary BD "
+ "structures failed\n");
+ goto error;
+ }
+ } else
+ txq->txb = NULL;
+
+ /* Circular buffer of transmit frame descriptors (TFDs),
+ * shared with device */
+ txq->bd = pci_alloc_consistent(dev,
+ sizeof(txq->bd[0]) * TFD_QUEUE_SIZE_MAX,
+ &txq->q.dma_addr);
+
+ if (!txq->bd) {
+ IWL_ERROR("pci_alloc_consistent(%zd) failed\n",
+ sizeof(txq->bd[0]) * TFD_QUEUE_SIZE_MAX);
+ goto error;
+ }
+ txq->q.id = id;
+
+ return 0;
+
+ error:
+ kfree(txq->txb);
+ txq->txb = NULL;
+
+ return -ENOMEM;
+}
+
+/*
+ * Tell nic where to find circular buffer of Tx Frame Descriptors for
+ * given Tx queue, and enable the DMA channel used for that queue.
+ *
+ * 4965 supports up to 16 Tx queues in DRAM, mapped to up to 8 Tx DMA
+ * channels supported in hardware.
+ */
+static int iwl_hw_tx_queue_init(struct iwl_priv *priv,
+ struct iwl4965_tx_queue *txq)
+{
+ int rc;
+ unsigned long flags;
+ int txq_id = txq->q.id;
+
+ spin_lock_irqsave(&priv->lock, flags);
+ rc = iwl_grab_nic_access(priv);
+ if (rc) {
+ spin_unlock_irqrestore(&priv->lock, flags);
+ return rc;
+ }
+
+ /* Circular buffer (TFD queue in DRAM) physical base address */
+ iwl_write_direct32(priv, FH_MEM_CBBC_QUEUE(txq_id),
+ txq->q.dma_addr >> 8);
+
+ /* Enable DMA channel, using same id as for TFD queue */
+ iwl_write_direct32(
+ priv, FH_TCSR_CHNL_TX_CONFIG_REG(txq_id),
+ FH_TCSR_TX_CONFIG_REG_VAL_DMA_CHNL_ENABLE |
+ FH_TCSR_TX_CONFIG_REG_VAL_DMA_CREDIT_ENABLE_VAL);
+ iwl_release_nic_access(priv);
+ spin_unlock_irqrestore(&priv->lock, flags);
+
+ return 0;
+}
+
+/**
+ * iwl_tx_queue_init - Allocate and initialize one tx/cmd queue
+ */
+static int iwl_tx_queue_init(struct iwl_priv *priv,
+ struct iwl4965_tx_queue *txq,
+ int slots_num, u32 txq_id)
+{
+ struct pci_dev *dev = priv->pci_dev;
+ int len;
+ int rc = 0;
+
+ /*
+ * Alloc buffer array for commands (Tx or other types of commands).
+ * For the command queue (#4), allocate command space + one big
+ * command for scan, since scan command is very huge; the system will
+ * not have two scans at the same time, so only one is needed.
+ * For normal Tx queues (all other queues), no super-size command
+ * space is needed.
+ */
+ len = sizeof(struct iwl_cmd) * slots_num;
+ if (txq_id == IWL_CMD_QUEUE_NUM)
+ len += IWL_MAX_SCAN_SIZE;
+ txq->cmd = pci_alloc_consistent(dev, len, &txq->dma_addr_cmd);
+ if (!txq->cmd)
+ return -ENOMEM;
+
+ /* Alloc driver data array and TFD circular buffer */
+ rc = iwl_tx_queue_alloc(priv, txq, txq_id);
+ if (rc) {
+ pci_free_consistent(dev, len, txq->cmd, txq->dma_addr_cmd);
+
+ return -ENOMEM;
+ }
+ txq->need_update = 0;
+
+ /* TFD_QUEUE_SIZE_MAX must be power-of-two size, otherwise
+ * iwl_queue_inc_wrap and iwl_queue_dec_wrap are broken. */
+ BUILD_BUG_ON(TFD_QUEUE_SIZE_MAX & (TFD_QUEUE_SIZE_MAX - 1));
+
+ /* Initialize queue's high/low-water marks, and head/tail indexes */
+ iwl_queue_init(priv, &txq->q, TFD_QUEUE_SIZE_MAX, slots_num, txq_id);
+
+ /* Tell device where to find queue */
+ iwl_hw_tx_queue_init(priv, txq);
+
+ return 0;
+}
+
+/**
+ * iwl_txq_ctx_reset - Reset TX queue context
+ * Destroys all DMA structures and initialise them again
+ *
+ * @param priv
+ * @return error code
+ */
+int iwl_txq_ctx_reset(struct iwl_priv *priv)
+{
+ int ret = 0;
+ int txq_id, slots_num;
+
+ iwl_kw_free(priv);
+
+ /* Free all tx/cmd queues and keep-warm buffer */
+ iwl_hw_txq_ctx_free(priv);
+
+ /* Alloc keep-warm buffer */
+ ret = iwl_kw_alloc(priv);
+ if (ret) {
+ IWL_ERROR("Keep Warm allocation failed");
+ goto error_kw;
+ }
+
+ /* Turn off all Tx DMA fifos */
+ ret = priv->cfg->ops->lib->disable_tx_fifo(priv);
+ if (unlikely(ret))
+ goto error_reset;
+
+ /* 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 (default 16) Tx queues,
+ * including the command queue (#4) */
+ for (txq_id = 0; txq_id < priv->hw_params.max_txq_num; txq_id++) {
+ slots_num = (txq_id == IWL_CMD_QUEUE_NUM) ?
+ TFD_CMD_SLOTS : TFD_TX_CMD_SLOTS;
+ ret = iwl_tx_queue_init(priv, &priv->txq[txq_id], slots_num,
+ txq_id);
+ if (ret) {
+ IWL_ERROR("Tx %d queue init failed\n", txq_id);
+ goto error;
+ }
+ }
+
+ return ret;
+
+ error:
+ iwl_hw_txq_ctx_free(priv);
+ error_reset:
+ iwl_kw_free(priv);
+ error_kw:
+ return ret;
+}
return index & (q->n_window - 1);
}
-/**
- * iwl4965_queue_init - Initialize queue's high/low-water and read/write indexes
- */
-static int iwl4965_queue_init(struct iwl_priv *priv, struct iwl4965_queue *q,
- int count, int slots_num, u32 id)
-{
- q->n_bd = count;
- q->n_window = slots_num;
- q->id = id;
-
- /* count must be power-of-two size, otherwise iwl_queue_inc_wrap
- * and iwl_queue_dec_wrap are broken. */
- BUG_ON(!is_power_of_2(count));
-
- /* slots_num must be power-of-two size, otherwise
- * get_cmd_index is broken. */
- BUG_ON(!is_power_of_2(slots_num));
-
- q->low_mark = q->n_window / 4;
- if (q->low_mark < 4)
- q->low_mark = 4;
-
- q->high_mark = q->n_window / 8;
- if (q->high_mark < 2)
- q->high_mark = 2;
-
- q->write_ptr = q->read_ptr = 0;
-
- return 0;
-}
-
-/**
- * iwl4965_tx_queue_alloc - Alloc driver data and TFD CB for one Tx/cmd queue
- */
-static int iwl4965_tx_queue_alloc(struct iwl_priv *priv,
- struct iwl4965_tx_queue *txq, u32 id)
-{
- struct pci_dev *dev = priv->pci_dev;
-
- /* Driver private data, only for Tx (not command) queues,
- * not shared with device. */
- if (id != IWL_CMD_QUEUE_NUM) {
- txq->txb = kmalloc(sizeof(txq->txb[0]) *
- TFD_QUEUE_SIZE_MAX, GFP_KERNEL);
- if (!txq->txb) {
- IWL_ERROR("kmalloc for auxiliary BD "
- "structures failed\n");
- goto error;
- }
- } else
- txq->txb = NULL;
-
- /* Circular buffer of transmit frame descriptors (TFDs),
- * shared with device */
- txq->bd = pci_alloc_consistent(dev,
- sizeof(txq->bd[0]) * TFD_QUEUE_SIZE_MAX,
- &txq->q.dma_addr);
-
- if (!txq->bd) {
- IWL_ERROR("pci_alloc_consistent(%zd) failed\n",
- sizeof(txq->bd[0]) * TFD_QUEUE_SIZE_MAX);
- goto error;
- }
- txq->q.id = id;
-
- return 0;
-
- error:
- if (txq->txb) {
- kfree(txq->txb);
- txq->txb = NULL;
- }
-
- return -ENOMEM;
-}
-
-/**
- * iwl4965_tx_queue_init - Allocate and initialize one tx/cmd queue
- */
-int iwl4965_tx_queue_init(struct iwl_priv *priv,
- struct iwl4965_tx_queue *txq, int slots_num, u32 txq_id)
-{
- struct pci_dev *dev = priv->pci_dev;
- int len;
- int rc = 0;
-
- /*
- * Alloc buffer array for commands (Tx or other types of commands).
- * For the command queue (#4), allocate command space + one big
- * command for scan, since scan command is very huge; the system will
- * not have two scans at the same time, so only one is needed.
- * For normal Tx queues (all other queues), no super-size command
- * space is needed.
- */
- len = sizeof(struct iwl_cmd) * slots_num;
- if (txq_id == IWL_CMD_QUEUE_NUM)
- len += IWL_MAX_SCAN_SIZE;
- txq->cmd = pci_alloc_consistent(dev, len, &txq->dma_addr_cmd);
- if (!txq->cmd)
- return -ENOMEM;
-
- /* Alloc driver data array and TFD circular buffer */
- rc = iwl4965_tx_queue_alloc(priv, txq, txq_id);
- if (rc) {
- pci_free_consistent(dev, len, txq->cmd, txq->dma_addr_cmd);
-
- return -ENOMEM;
- }
- txq->need_update = 0;
-
- /* TFD_QUEUE_SIZE_MAX must be power-of-two size, otherwise
- * iwl_queue_inc_wrap and iwl_queue_dec_wrap are broken. */
- BUILD_BUG_ON(TFD_QUEUE_SIZE_MAX & (TFD_QUEUE_SIZE_MAX - 1));
-
- /* Initialize queue's high/low-water marks, and head/tail indexes */
- iwl4965_queue_init(priv, &txq->q, TFD_QUEUE_SIZE_MAX, slots_num, txq_id);
-
- /* Tell device where to find queue */
- iwl4965_hw_tx_queue_init(priv, txq);
-
- return 0;
-}
-
-/**
- * iwl4965_tx_queue_free - Deallocate DMA queue.
- * @txq: Transmit queue to deallocate.
- *
- * Empty queue by removing and destroying all BD's.
- * Free all buffers.
- * 0-fill, but do not free "txq" descriptor structure.
- */
-void iwl4965_tx_queue_free(struct iwl_priv *priv, struct iwl4965_tx_queue *txq)
-{
- struct iwl4965_queue *q = &txq->q;
- struct pci_dev *dev = priv->pci_dev;
- int len;
-
- if (q->n_bd == 0)
- return;
-
- /* first, empty all BD's */
- for (; q->write_ptr != q->read_ptr;
- q->read_ptr = iwl_queue_inc_wrap(q->read_ptr, q->n_bd))
- iwl4965_hw_txq_free_tfd(priv, txq);
-
- len = sizeof(struct iwl_cmd) * q->n_window;
- if (q->id == IWL_CMD_QUEUE_NUM)
- len += IWL_MAX_SCAN_SIZE;
-
- /* De-alloc array of command/tx buffers */
- pci_free_consistent(dev, len, txq->cmd, txq->dma_addr_cmd);
-
- /* De-alloc circular buffer of TFDs */
- if (txq->q.n_bd)
- pci_free_consistent(dev, sizeof(struct iwl4965_tfd_frame) *
- txq->q.n_bd, txq->bd, txq->q.dma_addr);
-
- /* De-alloc array of per-TFD driver data */
- if (txq->txb) {
- kfree(txq->txb);
- txq->txb = NULL;
- }
-
- /* 0-fill queue descriptor structure */
- memset(txq, 0, sizeof(*txq));
-}
-
const u8 iwl4965_broadcast_addr[ETH_ALEN] = { 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF };
/*************** STATION TABLE MANAGEMENT ****
{
struct iwl4965_tx_queue *txq = &priv->txq[IWL_CMD_QUEUE_NUM];
struct iwl4965_queue *q = &txq->q;
- struct iwl4965_tfd_frame *tfd;
+ struct iwl_tfd_frame *tfd;
u32 *control_flags;
struct iwl_cmd *out_cmd;
u32 idx;
struct sk_buff *skb, struct ieee80211_tx_control *ctl)
{
struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
- struct iwl4965_tfd_frame *tfd;
+ struct iwl_tfd_frame *tfd;
u32 *control_flags;
int txq_id = ctl->queue;
struct iwl4965_tx_queue *txq = NULL;
if (txq_id != IWL_CMD_QUEUE_NUM) {
iwl4965_txstatus_to_ieee(priv,
&(txq->txb[txq->q.read_ptr]));
- iwl4965_hw_txq_free_tfd(priv, txq);
+ iwl_hw_txq_free_tfd(priv, txq);
} else if (nfreed > 1) {
IWL_ERROR("HCMD skipped: index (%d) %d %d\n", index,
q->write_ptr, q->read_ptr);
return ret;
}
- ret = priv->cfg->ops->lib->hw_nic_init(priv);
+ ret = iwl_hw_nic_init(priv);
if (ret) {
IWL_ERROR("Unable to init nic\n");
return ret;
if (priv->rxq.bd)
iwl_rx_queue_free(priv, &priv->rxq);
- iwl4965_hw_txq_ctx_free(priv);
+ iwl_hw_txq_ctx_free(priv);
iwlcore_clear_stations_table(priv);
iwl_eeprom_free(priv);
projects / karo-tx-linux.git / commitdiff