From: Ron Rindjunsky Date: Mon, 5 May 2008 02:22:49 +0000 (+0800) Subject: iwlwifi: handle shared memory Rx index access X-Git-Tag: firefly_0821_release~19559^2~442^2~20 X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=d67f5489d8d9be09bc8e1615ec6c57c3120a731d;p=firefly-linux-kernel-4.4.55.git iwlwifi: handle shared memory Rx index access This patch splits ucode's and driver's shared memory Rx index access to match 4965 and 5000 offsets. Signed-off-by: Ron Rindjunsky Signed-off-by: John W. Linville --- diff --git a/drivers/net/wireless/iwlwifi/iwl-4965.c b/drivers/net/wireless/iwlwifi/iwl-4965.c index 866a93e3de91..a475ecea9003 100644 --- a/drivers/net/wireless/iwlwifi/iwl-4965.c +++ b/drivers/net/wireless/iwlwifi/iwl-4965.c @@ -2006,7 +2006,7 @@ void iwl4965_hw_build_tx_cmd_rate(struct iwl_priv *priv, tx->rate_n_flags = iwl4965_hw_set_rate_n_flags(rate_plcp, rate_flags); } -int iwl4965_hw_get_rx_read(struct iwl_priv *priv) +static int iwl4965_shared_mem_rx_idx(struct iwl_priv *priv) { struct iwl4965_shared *s = priv->shared_virt; return le32_to_cpu(s->rb_closed) & 0xFFF; @@ -2093,6 +2093,8 @@ static int iwl4965_alloc_shared_mem(struct iwl_priv *priv) memset(priv->shared_virt, 0, sizeof(struct iwl4965_shared)); + priv->rb_closed_offset = offsetof(struct iwl4965_shared, rb_closed); + return 0; } @@ -3824,6 +3826,7 @@ 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, + .shared_mem_rx_idx = iwl4965_shared_mem_rx_idx, .txq_update_byte_cnt_tbl = iwl4965_txq_update_byte_cnt_tbl, .disable_tx_fifo = iwl4965_disable_tx_fifo, .rx_handler_setup = iwl4965_rx_handler_setup, diff --git a/drivers/net/wireless/iwlwifi/iwl-5000.c b/drivers/net/wireless/iwlwifi/iwl-5000.c index feffcafe1495..d6b91f7e0b1b 100644 --- a/drivers/net/wireless/iwlwifi/iwl-5000.c +++ b/drivers/net/wireless/iwlwifi/iwl-5000.c @@ -362,6 +362,8 @@ static int iwl5000_alloc_shared_mem(struct iwl_priv *priv) memset(priv->shared_virt, 0, sizeof(struct iwl5000_shared)); + priv->rb_closed_offset = offsetof(struct iwl5000_shared, rb_closed); + return 0; } @@ -374,6 +376,12 @@ static void iwl5000_free_shared_mem(struct iwl_priv *priv) priv->shared_phys); } +static int iwl5000_shared_mem_rx_idx(struct iwl_priv *priv) +{ + struct iwl5000_shared *s = priv->shared_virt; + return le32_to_cpu(s->rb_closed) & 0xFFF; +} + /** * iwl5000_txq_update_byte_cnt_tbl - Set up entry in Tx byte-count array */ @@ -466,6 +474,7 @@ 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, + .shared_mem_rx_idx = iwl5000_shared_mem_rx_idx, .txq_update_byte_cnt_tbl = iwl5000_txq_update_byte_cnt_tbl, .disable_tx_fifo = iwl5000_disable_tx_fifo, .apm_ops = { diff --git a/drivers/net/wireless/iwlwifi/iwl-core.h b/drivers/net/wireless/iwlwifi/iwl-core.h index 08eccdefd72e..77428db6a21d 100644 --- a/drivers/net/wireless/iwlwifi/iwl-core.h +++ b/drivers/net/wireless/iwlwifi/iwl-core.h @@ -103,6 +103,7 @@ struct iwl_lib_ops { /* ucode shared memory */ int (*alloc_shared_mem)(struct iwl_priv *priv); void (*free_shared_mem)(struct iwl_priv *priv); + int (*shared_mem_rx_idx)(struct iwl_priv *priv); void (*txq_update_byte_cnt_tbl)(struct iwl_priv *priv, struct iwl4965_tx_queue *txq, u16 byte_cnt); diff --git a/drivers/net/wireless/iwlwifi/iwl-dev.h b/drivers/net/wireless/iwlwifi/iwl-dev.h index 25dce14c87d8..1683bee800d1 100644 --- a/drivers/net/wireless/iwlwifi/iwl-dev.h +++ b/drivers/net/wireless/iwlwifi/iwl-dev.h @@ -697,7 +697,6 @@ extern int iwl4965_hw_txq_attach_buf_to_tfd(struct iwl_priv *priv, void *tfd, extern int iwl4965_hw_get_temperature(struct iwl_priv *priv); 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); extern void iwl4965_hw_build_tx_cmd_rate(struct iwl_priv *priv, struct iwl_cmd *cmd, struct ieee80211_tx_control *ctrl, @@ -1138,6 +1137,7 @@ struct iwl_priv { struct iwl_hw_params hw_params; /* driver/uCode shared Tx Byte Counts and Rx status */ void *shared_virt; + int rb_closed_offset; /* Physical Pointer to Tx Byte Counts and Rx status */ dma_addr_t shared_phys; diff --git a/drivers/net/wireless/iwlwifi/iwl-rx.c b/drivers/net/wireless/iwlwifi/iwl-rx.c index 171751e417d5..a2eb90d40b7e 100644 --- a/drivers/net/wireless/iwlwifi/iwl-rx.c +++ b/drivers/net/wireless/iwlwifi/iwl-rx.c @@ -399,8 +399,7 @@ int iwl_rx_init(struct iwl_priv *priv, struct iwl_rx_queue *rxq) /* 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); + (priv->shared_phys + priv->rb_closed_offset) >> 4); /* Enable Rx DMA, enable host interrupt, Rx buffer size 4k, 256 RBDs */ iwl_write_direct32(priv, FH_MEM_RCSR_CHNL0_CONFIG_REG, diff --git a/drivers/net/wireless/iwlwifi/iwl4965-base.c b/drivers/net/wireless/iwlwifi/iwl4965-base.c index 88f3554c0fbc..09f2a6383d2d 100644 --- a/drivers/net/wireless/iwlwifi/iwl4965-base.c +++ b/drivers/net/wireless/iwlwifi/iwl4965-base.c @@ -3095,7 +3095,7 @@ void iwl_rx_handle(struct iwl_priv *priv) /* uCode's read index (stored in shared DRAM) indicates the last Rx * buffer that the driver may process (last buffer filled by ucode). */ - r = iwl4965_hw_get_rx_read(priv); + r = priv->cfg->ops->lib->shared_mem_rx_idx(priv); i = rxq->read; /* Rx interrupt, but nothing sent from uCode */