diff options
Diffstat (limited to 'drivers/net/wireless/intel/iwlwifi/pcie')
| -rw-r--r-- | drivers/net/wireless/intel/iwlwifi/pcie/ctxt-info-gen3.c | 3 | ||||
| -rw-r--r-- | drivers/net/wireless/intel/iwlwifi/pcie/drv.c | 41 | ||||
| -rw-r--r-- | drivers/net/wireless/intel/iwlwifi/pcie/internal.h | 3 | ||||
| -rw-r--r-- | drivers/net/wireless/intel/iwlwifi/pcie/tx-gen2.c | 5 | ||||
| -rw-r--r-- | drivers/net/wireless/intel/iwlwifi/pcie/tx.c | 32 |
5 files changed, 68 insertions, 16 deletions
diff --git a/drivers/net/wireless/intel/iwlwifi/pcie/ctxt-info-gen3.c b/drivers/net/wireless/intel/iwlwifi/pcie/ctxt-info-gen3.c index e63efbf809f0..ae93a72542b2 100644 --- a/drivers/net/wireless/intel/iwlwifi/pcie/ctxt-info-gen3.c +++ b/drivers/net/wireless/intel/iwlwifi/pcie/ctxt-info-gen3.c @@ -89,7 +89,8 @@ iwl_pcie_ctxt_info_dbg_enable(struct iwl_trans *trans, } break; default: - IWL_ERR(trans, "WRT: Invalid buffer destination\n"); + IWL_DEBUG_FW(trans, "WRT: Invalid buffer destination (%d)\n", + le32_to_cpu(fw_mon_cfg->buf_location)); } out: if (dbg_flags) diff --git a/drivers/net/wireless/intel/iwlwifi/pcie/drv.c b/drivers/net/wireless/intel/iwlwifi/pcie/drv.c index 9ad43464b702..84fd93278450 100644 --- a/drivers/net/wireless/intel/iwlwifi/pcie/drv.c +++ b/drivers/net/wireless/intel/iwlwifi/pcie/drv.c @@ -1577,11 +1577,12 @@ static int iwl_pci_suspend(struct device *device) return 0; } -static int iwl_pci_resume(struct device *device) +static int _iwl_pci_resume(struct device *device, bool restore) { struct pci_dev *pdev = to_pci_dev(device); struct iwl_trans *trans = pci_get_drvdata(pdev); struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans); + bool device_was_powered_off = false; /* Before you put code here, think about WoWLAN. You cannot check here * whether WoWLAN is enabled or not, and your code will run even if @@ -1597,6 +1598,26 @@ static int iwl_pci_resume(struct device *device) if (!trans->op_mode) return 0; + /* + * Scratch value was altered, this means the device was powered off, we + * need to reset it completely. + * Note: MAC (bits 0:7) will be cleared upon suspend even with wowlan, + * so assume that any bits there mean that the device is usable. + */ + if (trans->trans_cfg->device_family >= IWL_DEVICE_FAMILY_BZ && + !iwl_read32(trans, CSR_FUNC_SCRATCH)) + device_was_powered_off = true; + + if (restore || device_was_powered_off) { + trans->state = IWL_TRANS_NO_FW; + /* Hope for the best here ... If one of those steps fails we + * won't really know how to recover. + */ + iwl_pcie_prepare_card_hw(trans); + iwl_finish_nic_init(trans); + iwl_op_mode_device_powered_off(trans->op_mode); + } + /* In WOWLAN, let iwl_trans_pcie_d3_resume do the rest of the work */ if (test_bit(STATUS_DEVICE_ENABLED, &trans->status)) return 0; @@ -1617,9 +1638,23 @@ static int iwl_pci_resume(struct device *device) return 0; } +static int iwl_pci_restore(struct device *device) +{ + return _iwl_pci_resume(device, true); +} + +static int iwl_pci_resume(struct device *device) +{ + return _iwl_pci_resume(device, false); +} + static const struct dev_pm_ops iwl_dev_pm_ops = { - SET_SYSTEM_SLEEP_PM_OPS(iwl_pci_suspend, - iwl_pci_resume) + .suspend = pm_sleep_ptr(iwl_pci_suspend), + .resume = pm_sleep_ptr(iwl_pci_resume), + .freeze = pm_sleep_ptr(iwl_pci_suspend), + .thaw = pm_sleep_ptr(iwl_pci_resume), + .poweroff = pm_sleep_ptr(iwl_pci_suspend), + .restore = pm_sleep_ptr(iwl_pci_restore), }; #define IWL_PM_OPS (&iwl_dev_pm_ops) diff --git a/drivers/net/wireless/intel/iwlwifi/pcie/internal.h b/drivers/net/wireless/intel/iwlwifi/pcie/internal.h index b59de4f80b4b..27a7e0b5b3d5 100644 --- a/drivers/net/wireless/intel/iwlwifi/pcie/internal.h +++ b/drivers/net/wireless/intel/iwlwifi/pcie/internal.h @@ -639,7 +639,8 @@ void iwl_trans_pcie_tx_reset(struct iwl_trans *trans); int iwl_pcie_txq_alloc(struct iwl_trans *trans, struct iwl_txq *txq, int slots_num, bool cmd_queue); -dma_addr_t iwl_pcie_get_sgt_tb_phys(struct sg_table *sgt, void *addr); +dma_addr_t iwl_pcie_get_sgt_tb_phys(struct sg_table *sgt, unsigned int offset, + unsigned int len); struct sg_table *iwl_pcie_prep_tso(struct iwl_trans *trans, struct sk_buff *skb, struct iwl_cmd_meta *cmd_meta, u8 **hdr, unsigned int hdr_room); diff --git a/drivers/net/wireless/intel/iwlwifi/pcie/tx-gen2.c b/drivers/net/wireless/intel/iwlwifi/pcie/tx-gen2.c index 2e780fb2da42..b1846abb99b7 100644 --- a/drivers/net/wireless/intel/iwlwifi/pcie/tx-gen2.c +++ b/drivers/net/wireless/intel/iwlwifi/pcie/tx-gen2.c @@ -168,6 +168,7 @@ static int iwl_txq_gen2_build_amsdu(struct iwl_trans *trans, struct ieee80211_hdr *hdr = (void *)skb->data; unsigned int snap_ip_tcp_hdrlen, ip_hdrlen, total_len, hdr_room; unsigned int mss = skb_shinfo(skb)->gso_size; + unsigned int data_offset = 0; dma_addr_t start_hdr_phys; u16 length, amsdu_pad; u8 *start_hdr; @@ -260,7 +261,8 @@ static int iwl_txq_gen2_build_amsdu(struct iwl_trans *trans, int ret; tb_len = min_t(unsigned int, tso.size, data_left); - tb_phys = iwl_pcie_get_sgt_tb_phys(sgt, tso.data); + tb_phys = iwl_pcie_get_sgt_tb_phys(sgt, data_offset, + tb_len); /* Not a real mapping error, use direct comparison */ if (unlikely(tb_phys == DMA_MAPPING_ERROR)) goto out_err; @@ -272,6 +274,7 @@ static int iwl_txq_gen2_build_amsdu(struct iwl_trans *trans, goto out_err; data_left -= tb_len; + data_offset += tb_len; tso_build_data(skb, &tso, tb_len); } } diff --git a/drivers/net/wireless/intel/iwlwifi/pcie/tx.c b/drivers/net/wireless/intel/iwlwifi/pcie/tx.c index 22d482ae53d9..9fe050f0ddc1 100644 --- a/drivers/net/wireless/intel/iwlwifi/pcie/tx.c +++ b/drivers/net/wireless/intel/iwlwifi/pcie/tx.c @@ -1814,23 +1814,31 @@ out: /** * iwl_pcie_get_sgt_tb_phys - Find TB address in mapped SG list * @sgt: scatter gather table - * @addr: Virtual address + * @offset: Offset into the mapped memory (i.e. SKB payload data) + * @len: Length of the area * - * Find the entry that includes the address for the given address and return - * correct physical address for the TB entry. + * Find the DMA address that corresponds to the SKB payload data at the + * position given by @offset. * * Returns: Address for TB entry */ -dma_addr_t iwl_pcie_get_sgt_tb_phys(struct sg_table *sgt, void *addr) +dma_addr_t iwl_pcie_get_sgt_tb_phys(struct sg_table *sgt, unsigned int offset, + unsigned int len) { struct scatterlist *sg; + unsigned int sg_offset = 0; int i; + /* + * Search the mapped DMA areas in the SG for the area that contains the + * data at offset with the given length. + */ for_each_sgtable_dma_sg(sgt, sg, i) { - if (addr >= sg_virt(sg) && - (u8 *)addr < (u8 *)sg_virt(sg) + sg_dma_len(sg)) - return sg_dma_address(sg) + - ((unsigned long)addr - (unsigned long)sg_virt(sg)); + if (offset >= sg_offset && + offset + len <= sg_offset + sg_dma_len(sg)) + return sg_dma_address(sg) + offset - sg_offset; + + sg_offset += sg_dma_len(sg); } WARN_ON_ONCE(1); @@ -1875,7 +1883,9 @@ struct sg_table *iwl_pcie_prep_tso(struct iwl_trans *trans, struct sk_buff *skb, sg_init_table(sgt->sgl, skb_shinfo(skb)->nr_frags + 1); - sgt->orig_nents = skb_to_sgvec(skb, sgt->sgl, 0, skb->len); + /* Only map the data, not the header (it is copied to the TSO page) */ + sgt->orig_nents = skb_to_sgvec(skb, sgt->sgl, skb_headlen(skb), + skb->data_len); if (WARN_ON_ONCE(sgt->orig_nents <= 0)) return NULL; @@ -1900,6 +1910,7 @@ static int iwl_fill_data_tbs_amsdu(struct iwl_trans *trans, struct sk_buff *skb, struct ieee80211_hdr *hdr = (void *)skb->data; unsigned int snap_ip_tcp_hdrlen, ip_hdrlen, total_len, hdr_room; unsigned int mss = skb_shinfo(skb)->gso_size; + unsigned int data_offset = 0; u16 length, iv_len, amsdu_pad; dma_addr_t start_hdr_phys; u8 *start_hdr, *pos_hdr; @@ -2000,7 +2011,7 @@ static int iwl_fill_data_tbs_amsdu(struct iwl_trans *trans, struct sk_buff *skb, data_left); dma_addr_t tb_phys; - tb_phys = iwl_pcie_get_sgt_tb_phys(sgt, tso.data); + tb_phys = iwl_pcie_get_sgt_tb_phys(sgt, data_offset, size); /* Not a real mapping error, use direct comparison */ if (unlikely(tb_phys == DMA_MAPPING_ERROR)) return -EINVAL; @@ -2011,6 +2022,7 @@ static int iwl_fill_data_tbs_amsdu(struct iwl_trans *trans, struct sk_buff *skb, tb_phys, size); data_left -= size; + data_offset += size; tso_build_data(skb, &tso, size); } } |