Return-path: Received: from mga09.intel.com ([134.134.136.24]:37081 "EHLO mga09.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752308AbYLVDiw (ORCPT ); Sun, 21 Dec 2008 22:38:52 -0500 From: Zhu Yi To: linville@tuxdriver.com Cc: linux-wireless@vger.kernel.org, ipw3945-devel@lists.sourceforge.net, "Winkler, Tomas" , Zhu Yi Subject: [PATCH 10/10] iwl3945: use rx queue management infrastructure from iwlcore Date: Mon, 22 Dec 2008 11:31:23 +0800 Message-Id: <1229916683-9772-11-git-send-email-yi.zhu@intel.com> (sfid-20081222_043900_918761_763FB521) In-Reply-To: <1229916683-9772-10-git-send-email-yi.zhu@intel.com> References: <1229916683-9772-1-git-send-email-yi.zhu@intel.com> <1229916683-9772-2-git-send-email-yi.zhu@intel.com> <1229916683-9772-3-git-send-email-yi.zhu@intel.com> <1229916683-9772-4-git-send-email-yi.zhu@intel.com> <1229916683-9772-5-git-send-email-yi.zhu@intel.com> <1229916683-9772-6-git-send-email-yi.zhu@intel.com> <1229916683-9772-7-git-send-email-yi.zhu@intel.com> <1229916683-9772-8-git-send-email-yi.zhu@intel.com> <1229916683-9772-9-git-send-email-yi.zhu@intel.com> <1229916683-9772-10-git-send-email-yi.zhu@intel.com> Sender: linux-wireless-owner@vger.kernel.org List-ID: From: Winkler, Tomas This patch uses rx queue alloc free and reset function from iwlcore. This should fix the regression reported by Kalle Valo. Signed-off-by: Tomas Winkler Signed-off-by: Zhu Yi --- drivers/net/wireless/iwlwifi/iwl-3945.c | 4 +- drivers/net/wireless/iwlwifi/iwl-3945.h | 3 - drivers/net/wireless/iwlwifi/iwl3945-base.c | 81 +-------------------------- 3 files changed, 3 insertions(+), 85 deletions(-) diff --git a/drivers/net/wireless/iwlwifi/iwl-3945.c b/drivers/net/wireless/iwlwifi/iwl-3945.c index fb2c2db..77c55a6 100644 --- a/drivers/net/wireless/iwlwifi/iwl-3945.c +++ b/drivers/net/wireless/iwlwifi/iwl-3945.c @@ -1195,13 +1195,13 @@ int iwl3945_hw_nic_init(struct iwl_priv *priv) /* Allocate the RX queue, or reset if it is already allocated */ if (!rxq->bd) { - rc = iwl3945_rx_queue_alloc(priv); + rc = iwl_rx_queue_alloc(priv); if (rc) { IWL_ERR(priv, "Unable to initialize Rx queue\n"); return -ENOMEM; } } else - iwl3945_rx_queue_reset(priv, rxq); + iwl_rx_queue_reset(priv, rxq); iwl3945_rx_replenish(priv); diff --git a/drivers/net/wireless/iwlwifi/iwl-3945.h b/drivers/net/wireless/iwlwifi/iwl-3945.h index 941746b..bd41643 100644 --- a/drivers/net/wireless/iwlwifi/iwl-3945.h +++ b/drivers/net/wireless/iwlwifi/iwl-3945.h @@ -212,9 +212,6 @@ extern u8 iwl3945_add_station(struct iwl_priv *priv, const u8 *bssid, int is_ap, u8 flags); extern int iwl3945_power_init_handle(struct iwl_priv *priv); extern int iwl3945_eeprom_init(struct iwl_priv *priv); -extern int iwl3945_rx_queue_alloc(struct iwl_priv *priv); -extern void iwl3945_rx_queue_reset(struct iwl_priv *priv, - struct iwl_rx_queue *rxq); extern int iwl3945_calc_db_from_ratio(int sig_ratio); extern int iwl3945_calc_sig_qual(int rssi_dbm, int noise_dbm); extern int iwl3945_tx_queue_init(struct iwl_priv *priv, diff --git a/drivers/net/wireless/iwlwifi/iwl3945-base.c b/drivers/net/wireless/iwlwifi/iwl3945-base.c index 2e5c4d8..c098cac 100644 --- a/drivers/net/wireless/iwlwifi/iwl3945-base.c +++ b/drivers/net/wireless/iwlwifi/iwl3945-base.c @@ -3189,7 +3189,6 @@ static void iwl3945_tx_cmd_complete(struct iwl_priv *priv, * * Driver sequence: * - * iwl3945_rx_queue_alloc() Allocates rx_free * iwl3945_rx_replenish() Replenishes rx_free list from rx_used, and calls * iwl3945_rx_queue_restock * iwl3945_rx_queue_restock() Moves available buffers from rx_free into Rx @@ -3408,84 +3407,6 @@ void iwl3945_rx_replenish(void *data) spin_unlock_irqrestore(&priv->lock, flags); } -/* Assumes that the skb field of the buffers in 'pool' is kept accurate. - * If an SKB has been detached, the POOL needs to have its SKB set to NULL - * This free routine walks the list of POOL entries and if SKB is set to - * non NULL it is unmapped and freed - */ -static void iwl3945_rx_queue_free(struct iwl_priv *priv, struct iwl_rx_queue *rxq) -{ - int i; - for (i = 0; i < RX_QUEUE_SIZE + RX_FREE_BUFFERS; i++) { - if (rxq->pool[i].skb != NULL) { - pci_unmap_single(priv->pci_dev, - rxq->pool[i].real_dma_addr, - IWL_RX_BUF_SIZE, PCI_DMA_FROMDEVICE); - dev_kfree_skb(rxq->pool[i].skb); - } - } - - pci_free_consistent(priv->pci_dev, 4 * RX_QUEUE_SIZE, rxq->bd, - rxq->dma_addr); - rxq->bd = NULL; -} - -int iwl3945_rx_queue_alloc(struct iwl_priv *priv) -{ - struct iwl_rx_queue *rxq = &priv->rxq; - struct pci_dev *dev = priv->pci_dev; - int i; - - spin_lock_init(&rxq->lock); - INIT_LIST_HEAD(&rxq->rx_free); - INIT_LIST_HEAD(&rxq->rx_used); - - /* Alloc the circular buffer of Read Buffer Descriptors (RBDs) */ - rxq->bd = pci_alloc_consistent(dev, 4 * RX_QUEUE_SIZE, &rxq->dma_addr); - if (!rxq->bd) - return -ENOMEM; - - /* Fill the rx_used queue with _all_ of the Rx buffers */ - for (i = 0; i < RX_FREE_BUFFERS + RX_QUEUE_SIZE; i++) - list_add_tail(&rxq->pool[i].list, &rxq->rx_used); - - /* Set us so that we have processed and used all buffers, but have - * not restocked the Rx queue with fresh buffers */ - rxq->read = rxq->write = 0; - rxq->free_count = 0; - rxq->need_update = 0; - return 0; -} - -void iwl3945_rx_queue_reset(struct iwl_priv *priv, struct iwl_rx_queue *rxq) -{ - unsigned long flags; - int i; - spin_lock_irqsave(&rxq->lock, flags); - INIT_LIST_HEAD(&rxq->rx_free); - INIT_LIST_HEAD(&rxq->rx_used); - /* Fill the rx_used queue with _all_ of the Rx buffers */ - for (i = 0; i < RX_FREE_BUFFERS + RX_QUEUE_SIZE; i++) { - /* In the reset function, these buffers may have been allocated - * to an SKB, so we need to unmap and free potential storage */ - if (rxq->pool[i].skb != NULL) { - pci_unmap_single(priv->pci_dev, - rxq->pool[i].real_dma_addr, - IWL_RX_BUF_SIZE, PCI_DMA_FROMDEVICE); - priv->alloc_rxb_skb--; - dev_kfree_skb(rxq->pool[i].skb); - rxq->pool[i].skb = NULL; - } - list_add_tail(&rxq->pool[i].list, &rxq->rx_used); - } - - /* Set us so that we have processed and used all buffers, but have - * not restocked the Rx queue with fresh buffers */ - rxq->read = rxq->write = 0; - rxq->free_count = 0; - spin_unlock_irqrestore(&rxq->lock, flags); -} - /* Convert linear signal-to-noise ratio into dB */ static u8 ratio2dB[100] = { /* 0 1 2 3 4 5 6 7 8 9 */ @@ -7746,7 +7667,7 @@ static void __devexit iwl3945_pci_remove(struct pci_dev *pdev) iwl3945_dealloc_ucode_pci(priv); if (priv->rxq.bd) - iwl3945_rx_queue_free(priv, &priv->rxq); + iwl_rx_queue_free(priv, &priv->rxq); iwl3945_hw_txq_ctx_free(priv); iwl3945_unset_hw_params(priv); -- 1.5.3.6