From dbb6654c411e2030ed969ef0c531eb7fda8b27a3 Mon Sep 17 00:00:00 2001 From: "Winkler, Tomas" Date: Mon, 22 Dec 2008 11:31:14 +0800 Subject: [PATCH] iwl3945: rearrange 3945 tfd This patch moves 3945 TFD structures to iwl-3945-fh.h. It renames them similarly to AGN naming. This patch also eliminates iwl3945_tx_info and fixes endianity issue in iwl3945_tx_skb and iwl3945_enqueue_hcmd caused by ugly casting. Signed-off-by: Tomas Winkler Signed-off-by: Zhu Yi Signed-off-by: John W. Linville --- drivers/net/wireless/iwlwifi/iwl-3945-fh.h | 12 ++++++++- drivers/net/wireless/iwlwifi/iwl-3945-hw.h | 11 -------- drivers/net/wireless/iwlwifi/iwl-3945.c | 19 +++++++------- drivers/net/wireless/iwlwifi/iwl-3945.h | 8 +----- drivers/net/wireless/iwlwifi/iwl-dev.h | 13 +++++----- drivers/net/wireless/iwlwifi/iwl3945-base.c | 40 ++++++++++++----------------- 6 files changed, 46 insertions(+), 57 deletions(-) diff --git a/drivers/net/wireless/iwlwifi/iwl-3945-fh.h b/drivers/net/wireless/iwlwifi/iwl-3945-fh.h index bbcd0ce..53ed249 100644 --- a/drivers/net/wireless/iwlwifi/iwl-3945-fh.h +++ b/drivers/net/wireless/iwlwifi/iwl-3945-fh.h @@ -172,7 +172,17 @@ #define FH39_RSSR_CHNL0_RX_STATUS_CHNL_IDLE (0x01000000) -#define TFD_QUEUE_SIZE_MAX (256) +struct iwl3945_tfd_tb { + __le32 addr; + __le32 len; +} __attribute__ ((packed)); + +struct iwl3945_tfd { + __le32 control_flags; + struct iwl3945_tfd_tb tbs[4]; + u8 __pad[28]; +} __attribute__ ((packed)); + #endif /* __iwl_3945_fh_h__ */ diff --git a/drivers/net/wireless/iwlwifi/iwl-3945-hw.h b/drivers/net/wireless/iwlwifi/iwl-3945-hw.h index fc1b774..1ba59df 100644 --- a/drivers/net/wireless/iwlwifi/iwl-3945-hw.h +++ b/drivers/net/wireless/iwlwifi/iwl-3945-hw.h @@ -304,17 +304,6 @@ struct iwl3945_shared { __le32 tx_base_ptr[8]; } __attribute__ ((packed)); -struct iwl3945_tfd_frame_data { - __le32 addr; - __le32 len; -} __attribute__ ((packed)); - -struct iwl3945_tfd_frame { - __le32 control_flags; - struct iwl3945_tfd_frame_data pa[4]; - u8 reserved[28]; -} __attribute__ ((packed)); - static inline u8 iwl3945_hw_get_rate(__le16 rate_n_flags) { return le16_to_cpu(rate_n_flags) & 0xFF; diff --git a/drivers/net/wireless/iwlwifi/iwl-3945.c b/drivers/net/wireless/iwlwifi/iwl-3945.c index cb86444..6810909f 100644 --- a/drivers/net/wireless/iwlwifi/iwl-3945.c +++ b/drivers/net/wireless/iwlwifi/iwl-3945.c @@ -38,6 +38,7 @@ #include #include +#include "iwl-fh.h" #include "iwl-3945-fh.h" #include "iwl-commands.h" #include "iwl-3945.h" @@ -307,7 +308,7 @@ static void iwl3945_tx_queue_reclaim(struct iwl_priv *priv, { struct iwl3945_tx_queue *txq = &priv->txq39[txq_id]; struct iwl_queue *q = &txq->q; - struct iwl3945_tx_info *tx_info; + struct iwl_tx_info *tx_info; BUG_ON(txq_id == IWL_CMD_QUEUE_NUM); @@ -728,7 +729,7 @@ int iwl3945_hw_txq_attach_buf_to_tfd(struct iwl_priv *priv, void *ptr, { int count; u32 pad; - struct iwl3945_tfd_frame *tfd = (struct iwl3945_tfd_frame *)ptr; + struct iwl3945_tfd *tfd = (struct iwl3945_tfd *)ptr; count = TFD_CTL_COUNT_GET(le32_to_cpu(tfd->control_flags)); pad = TFD_CTL_PAD_GET(le32_to_cpu(tfd->control_flags)); @@ -739,8 +740,8 @@ int iwl3945_hw_txq_attach_buf_to_tfd(struct iwl_priv *priv, void *ptr, return -EINVAL; } - tfd->pa[count].addr = cpu_to_le32(addr); - tfd->pa[count].len = cpu_to_le32(len); + tfd->tbs[count].addr = cpu_to_le32(addr); + tfd->tbs[count].len = cpu_to_le32(len); count++; @@ -757,8 +758,8 @@ int iwl3945_hw_txq_attach_buf_to_tfd(struct iwl_priv *priv, void *ptr, */ int iwl3945_hw_txq_free_tfd(struct iwl_priv *priv, struct iwl3945_tx_queue *txq) { - struct iwl3945_tfd_frame *bd_tmp = (struct iwl3945_tfd_frame *)&txq->bd[0]; - struct iwl3945_tfd_frame *bd = &bd_tmp[txq->q.read_ptr]; + struct iwl3945_tfd *tfd_tmp = (struct iwl3945_tfd *)&txq->tfds[0]; + struct iwl3945_tfd *tfd = &tfd_tmp[txq->q.read_ptr]; struct pci_dev *dev = priv->pci_dev; int i; int counter; @@ -769,7 +770,7 @@ int iwl3945_hw_txq_free_tfd(struct iwl_priv *priv, struct iwl3945_tx_queue *txq) return 0; /* sanity check */ - counter = TFD_CTL_COUNT_GET(le32_to_cpu(bd->control_flags)); + counter = TFD_CTL_COUNT_GET(le32_to_cpu(tfd->control_flags)); if (counter > NUM_TFD_CHUNKS) { IWL_ERR(priv, "Too many chunks: %i\n", counter); /* @todo issue fatal error, it is quite serious situation */ @@ -779,8 +780,8 @@ int iwl3945_hw_txq_free_tfd(struct iwl_priv *priv, struct iwl3945_tx_queue *txq) /* unmap chunks if any */ for (i = 1; i < counter; i++) { - pci_unmap_single(dev, le32_to_cpu(bd->pa[i].addr), - le32_to_cpu(bd->pa[i].len), PCI_DMA_TODEVICE); + pci_unmap_single(dev, le32_to_cpu(tfd->tbs[i].addr), + le32_to_cpu(tfd->tbs[i].len), PCI_DMA_TODEVICE); if (txq->txb[txq->q.read_ptr].skb[0]) { struct sk_buff *skb = txq->txb[txq->q.read_ptr].skb[0]; if (txq->txb[txq->q.read_ptr].skb[0]) { diff --git a/drivers/net/wireless/iwlwifi/iwl-3945.h b/drivers/net/wireless/iwlwifi/iwl-3945.h index aff6a3a..716c4b4 100644 --- a/drivers/net/wireless/iwlwifi/iwl-3945.h +++ b/drivers/net/wireless/iwlwifi/iwl-3945.h @@ -45,6 +45,7 @@ extern struct pci_device_id iwl3945_hw_card_ids[]; #include "iwl-csr.h" #include "iwl-prph.h" +#include "iwl-fh.h" #include "iwl-3945-hw.h" #include "iwl-debug.h" #include "iwl-power.h" @@ -107,13 +108,6 @@ enum iwl3945_antenna { int iwl3945_x2_queue_used(const struct iwl_queue *q, int i); -#define MAX_NUM_OF_TBS (20) - -/* One for each TFD */ -struct iwl3945_tx_info { - struct sk_buff *skb[MAX_NUM_OF_TBS]; -}; - #include "iwl-agn-rs.h" #define IWL_TX_FIFO_AC0 0 diff --git a/drivers/net/wireless/iwlwifi/iwl-dev.h b/drivers/net/wireless/iwlwifi/iwl-dev.h index 8981c05..1ad4d08 100644 --- a/drivers/net/wireless/iwlwifi/iwl-dev.h +++ b/drivers/net/wireless/iwlwifi/iwl-dev.h @@ -36,14 +36,15 @@ #include #include -#include "iwl-rfkill.h" #include "iwl-eeprom.h" -#include "iwl-4965-hw.h" -#include "iwl-3945-hw.h" -#include "iwl-3945-led.h" #include "iwl-csr.h" #include "iwl-prph.h" +#include "iwl-fh.h" #include "iwl-debug.h" +#include "iwl-rfkill.h" +#include "iwl-4965-hw.h" +#include "iwl-3945-hw.h" +#include "iwl-3945-led.h" #include "iwl-led.h" #include "iwl-power.h" #include "iwl-agn-rs.h" @@ -239,10 +240,10 @@ struct iwl_channel_info { */ struct iwl3945_tx_queue { struct iwl_queue q; - struct iwl3945_tfd_frame *bd; + struct iwl3945_tfd *tfds; struct iwl_cmd *cmd; dma_addr_t dma_addr_cmd; - struct iwl3945_tx_info *txb; + struct iwl_tx_info *txb; int need_update; int active; }; diff --git a/drivers/net/wireless/iwlwifi/iwl3945-base.c b/drivers/net/wireless/iwlwifi/iwl3945-base.c index 207d55b..c37fa00 100644 --- a/drivers/net/wireless/iwlwifi/iwl3945-base.c +++ b/drivers/net/wireless/iwlwifi/iwl3945-base.c @@ -48,9 +48,10 @@ #define DRV_NAME "iwl3945" +#include "iwl-fh.h" +#include "iwl-3945-fh.h" #include "iwl-commands.h" #include "iwl-3945.h" -#include "iwl-3945-fh.h" #include "iwl-helpers.h" #include "iwl-core.h" #include "iwl-dev.h" @@ -180,13 +181,13 @@ static int iwl3945_tx_queue_alloc(struct iwl_priv *priv, /* 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->tfds = pci_alloc_consistent(dev, + sizeof(txq->tfds[0]) * TFD_QUEUE_SIZE_MAX, &txq->q.dma_addr); - if (!txq->bd) { + if (!txq->tfds) { IWL_ERR(priv, "pci_alloc_consistent(%zd) failed\n", - sizeof(txq->bd[0]) * TFD_QUEUE_SIZE_MAX); + sizeof(txq->tfds[0]) * TFD_QUEUE_SIZE_MAX); goto error; } txq->q.id = id; @@ -278,8 +279,8 @@ void iwl3945_tx_queue_free(struct iwl_priv *priv, struct iwl3945_tx_queue *txq) /* De-alloc circular buffer of TFDs */ if (txq->q.n_bd) - pci_free_consistent(dev, sizeof(struct iwl3945_tfd_frame) * - txq->q.n_bd, txq->bd, txq->q.dma_addr); + pci_free_consistent(dev, sizeof(struct iwl3945_tfd) * + txq->q.n_bd, txq->tfds, txq->q.dma_addr); /* De-alloc array of per-TFD driver data */ kfree(txq->txb); @@ -445,14 +446,12 @@ static int iwl3945_enqueue_hcmd(struct iwl_priv *priv, struct iwl_host_cmd *cmd) { struct iwl3945_tx_queue *txq = &priv->txq39[IWL_CMD_QUEUE_NUM]; struct iwl_queue *q = &txq->q; - struct iwl3945_tfd_frame *tfd; - u32 *control_flags; + struct iwl3945_tfd *tfd; struct iwl_cmd *out_cmd; u32 idx; u16 fix_size = (u16)(cmd->len + sizeof(out_cmd->hdr)); dma_addr_t phys_addr; int pad; - u16 count; int ret; unsigned long flags; @@ -475,11 +474,9 @@ static int iwl3945_enqueue_hcmd(struct iwl_priv *priv, struct iwl_host_cmd *cmd) spin_lock_irqsave(&priv->hcmd_lock, flags); - tfd = &txq->bd[q->write_ptr]; + tfd = &txq->tfds[q->write_ptr]; memset(tfd, 0, sizeof(*tfd)); - control_flags = (u32 *) tfd; - idx = get_cmd_index(q, q->write_ptr, cmd->meta.flags & CMD_SIZE_HUGE); out_cmd = &txq->cmd[idx]; @@ -501,8 +498,7 @@ static int iwl3945_enqueue_hcmd(struct iwl_priv *priv, struct iwl_host_cmd *cmd) iwl3945_hw_txq_attach_buf_to_tfd(priv, tfd, phys_addr, fix_size); pad = U32_PAD(cmd->len); - count = TFD_CTL_COUNT_GET(*control_flags); - *control_flags = TFD_CTL_COUNT_SET(count) | TFD_CTL_PAD_SET(pad); + tfd->control_flags |= cpu_to_le32(TFD_CTL_PAD_SET(pad)); IWL_DEBUG_HC("Sending command %s (#%x), seq: 0x%04X, " "%d bytes at %d[%d]:%d\n", @@ -2231,8 +2227,7 @@ static int iwl3945_tx_skb(struct iwl_priv *priv, struct sk_buff *skb) { struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data; struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); - struct iwl3945_tfd_frame *tfd; - u32 *control_flags; + struct iwl3945_tfd *tfd; int txq_id = skb_get_queue_mapping(skb); struct iwl3945_tx_queue *txq = NULL; struct iwl_queue *q = NULL; @@ -2317,13 +2312,12 @@ static int iwl3945_tx_skb(struct iwl_priv *priv, struct sk_buff *skb) spin_lock_irqsave(&priv->lock, flags); /* Set up first empty TFD within this queue's circular TFD buffer */ - tfd = &txq->bd[q->write_ptr]; + tfd = &txq->tfds[q->write_ptr]; memset(tfd, 0, sizeof(*tfd)); - control_flags = (u32 *) tfd; idx = get_cmd_index(q, q->write_ptr, 0); /* Set up driver data for this TFD */ - memset(&(txq->txb[q->write_ptr]), 0, sizeof(struct iwl3945_tx_info)); + memset(&(txq->txb[q->write_ptr]), 0, sizeof(struct iwl_tx_info)); txq->txb[q->write_ptr].skb[0] = skb; /* Init first empty entry in queue's array of Tx/cmd buffers */ @@ -2387,12 +2381,12 @@ static int iwl3945_tx_skb(struct iwl_priv *priv, struct sk_buff *skb) if (!len) /* If there is no payload, then we use only one Tx buffer */ - *control_flags = TFD_CTL_COUNT_SET(1); + tfd->control_flags = cpu_to_le32(TFD_CTL_COUNT_SET(1)); else /* Else use 2 buffers. * Tell 3945 about any padding after MAC header */ - *control_flags = TFD_CTL_COUNT_SET(2) | - TFD_CTL_PAD_SET(U32_PAD(len)); + tfd->control_flags = cpu_to_le32(TFD_CTL_COUNT_SET(2) | + TFD_CTL_PAD_SET(U32_PAD(len))); /* Total # bytes to be transmitted */ len = (u16)skb->len; -- 2.7.4