1 files changed, 66 insertions, 140 deletions

diff --git a/drivers/net/wireless/realtek/rtlwifi/pci.c b/drivers/net/wireless/realtek/rtlwifi/pci.c
index 9886e719739b..d080469264cf 100644
--- a/drivers/net/wireless/realtek/rtlwifi/pci.c
+++ b/drivers/net/wireless/realtek/rtlwifi/pci.c
@@ -64,13 +64,12 @@ static void _rtl_pci_update_default_setting(struct ieee80211_hw *hw)
 	struct rtl_ps_ctl *ppsc = rtl_psc(rtl_priv(hw));
 	struct rtl_pci *rtlpci = rtl_pcidev(rtl_pcipriv(hw));
 	u8 pcibridge_vendor = pcipriv->ndis_adapter.pcibridge_vendor;
-	u8 init_aspm;
+	u16 init_aspm;
 
 	ppsc->reg_rfps_level = 0;
 	ppsc->support_aspm = false;
 
 	/*Update PCI ASPM setting */
-	ppsc->const_amdpci_aspm = rtlpci->const_amdpci_aspm;
 	switch (rtlpci->const_pci_aspm) {
 	case 0:
 		/*No ASPM */
@@ -151,9 +150,20 @@ static void _rtl_pci_update_default_setting(struct ieee80211_hw *hw)
 	/* toshiba aspm issue, toshiba will set aspm selfly
 	 * so we should not set aspm in driver
 	 */
-	pci_read_config_byte(rtlpci->pdev, 0x80, &init_aspm);
+	pcie_capability_read_word(rtlpci->pdev, PCI_EXP_LNKCTL, &init_aspm);
 	if (rtlpriv->rtlhal.hw_type == HARDWARE_TYPE_RTL8192SE &&
-	    init_aspm == 0x43)
+	    ((u8)init_aspm) == (PCI_EXP_LNKCTL_ASPM_L0S |
+				PCI_EXP_LNKCTL_ASPM_L1 | PCI_EXP_LNKCTL_CCC))
+		ppsc->support_aspm = false;
+
+	/* RTL8723BE found on some ASUSTek laptops, such as F441U and
+	 * X555UQ with subsystem ID 11ad:1723 are known to output large
+	 * amounts of PCIe AER errors during and after boot up, causing
+	 * heavy lags, poor network throughput, and occasional lock-ups.
+	 */
+	if (rtlpriv->rtlhal.hw_type == HARDWARE_TYPE_RTL8723BE &&
+	    (rtlpci->pdev->subsystem_vendor == 0x11ad &&
+	     rtlpci->pdev->subsystem_device == 0x1723))
 		ppsc->support_aspm = false;
 }
 
@@ -164,21 +174,29 @@ static bool _rtl_pci_platform_switch_device_pci_aspm(
 	struct rtl_pci *rtlpci = rtl_pcidev(rtl_pcipriv(hw));
 	struct rtl_hal *rtlhal = rtl_hal(rtl_priv(hw));
 
+	value &= PCI_EXP_LNKCTL_ASPMC;
+
 	if (rtlhal->hw_type != HARDWARE_TYPE_RTL8192SE)
-		value |= 0x40;
+		value |= PCI_EXP_LNKCTL_CCC;
 
-	pci_write_config_byte(rtlpci->pdev, 0x80, value);
+	pcie_capability_clear_and_set_word(rtlpci->pdev, PCI_EXP_LNKCTL,
+					   PCI_EXP_LNKCTL_ASPMC | value,
+					   value);
 
 	return false;
 }
 
-/*When we set 0x01 to enable clk request. Set 0x0 to disable clk req.*/
-static void _rtl_pci_switch_clk_req(struct ieee80211_hw *hw, u8 value)
+/* @value is PCI_EXP_LNKCTL_CLKREQ_EN or 0 to enable/disable clk request. */
+static void _rtl_pci_switch_clk_req(struct ieee80211_hw *hw, u16 value)
 {
 	struct rtl_pci *rtlpci = rtl_pcidev(rtl_pcipriv(hw));
 	struct rtl_hal *rtlhal = rtl_hal(rtl_priv(hw));
 
-	pci_write_config_byte(rtlpci->pdev, 0x81, value);
+	value &= PCI_EXP_LNKCTL_CLKREQ_EN;
+
+	pcie_capability_clear_and_set_word(rtlpci->pdev, PCI_EXP_LNKCTL,
+					   PCI_EXP_LNKCTL_CLKREQ_EN,
+					   value);
 
 	if (rtlhal->hw_type == HARDWARE_TYPE_RTL8192SE)
 		udelay(100);
@@ -192,13 +210,10 @@ static void rtl_pci_disable_aspm(struct ieee80211_hw *hw)
 	struct rtl_ps_ctl *ppsc = rtl_psc(rtl_priv(hw));
 	struct rtl_pci *rtlpci = rtl_pcidev(rtl_pcipriv(hw));
 	u8 pcibridge_vendor = pcipriv->ndis_adapter.pcibridge_vendor;
-	u8 num4bytes = pcipriv->ndis_adapter.num4bytes;
 	/*Retrieve original configuration settings. */
 	u8 linkctrl_reg = pcipriv->ndis_adapter.linkctrl_reg;
-	u16 pcibridge_linkctrlreg = pcipriv->ndis_adapter.
-				pcibridge_linkctrlreg;
 	u16 aspmlevel = 0;
-	u8 tmp_u1b = 0;
+	u16 tmp_u1b = 0;
 
 	if (!ppsc->support_aspm)
 		return;
@@ -216,21 +231,13 @@ static void rtl_pci_disable_aspm(struct ieee80211_hw *hw)
 	}
 
 	/*for promising device will in L0 state after an I/O. */
-	pci_read_config_byte(rtlpci->pdev, 0x80, &tmp_u1b);
+	pcie_capability_read_word(rtlpci->pdev, PCI_EXP_LNKCTL, &tmp_u1b);
 
 	/*Set corresponding value. */
-	aspmlevel |= BIT(0) | BIT(1);
+	aspmlevel |= PCI_EXP_LNKCTL_ASPM_L0S | PCI_EXP_LNKCTL_ASPM_L1;
 	linkctrl_reg &= ~aspmlevel;
-	pcibridge_linkctrlreg &= ~(BIT(0) | BIT(1));
 
 	_rtl_pci_platform_switch_device_pci_aspm(hw, linkctrl_reg);
-	udelay(50);
-
-	/*4 Disable Pci Bridge ASPM */
-	pci_write_config_byte(rtlpci->pdev, (num4bytes << 2),
-			      pcibridge_linkctrlreg);
-
-	udelay(50);
 }
 
 /*Enable RTL8192SE ASPM & Enable Pci Bridge ASPM for
@@ -245,9 +252,7 @@ static void rtl_pci_enable_aspm(struct ieee80211_hw *hw)
 	struct rtl_ps_ctl *ppsc = rtl_psc(rtl_priv(hw));
 	struct rtl_pci *rtlpci = rtl_pcidev(rtl_pcipriv(hw));
 	u8 pcibridge_vendor = pcipriv->ndis_adapter.pcibridge_vendor;
-	u8 num4bytes = pcipriv->ndis_adapter.num4bytes;
 	u16 aspmlevel;
-	u8 u_pcibridge_aspmsetting;
 	u8 u_device_aspmsetting;
 
 	if (!ppsc->support_aspm)
@@ -259,25 +264,6 @@ static void rtl_pci_enable_aspm(struct ieee80211_hw *hw)
 		return;
 	}
 
-	/*4 Enable Pci Bridge ASPM */
-
-	u_pcibridge_aspmsetting =
-	    pcipriv->ndis_adapter.pcibridge_linkctrlreg |
-	    rtlpci->const_hostpci_aspm_setting;
-
-	if (pcibridge_vendor == PCI_BRIDGE_VENDOR_INTEL)
-		u_pcibridge_aspmsetting &= ~BIT(0);
-
-	pci_write_config_byte(rtlpci->pdev, (num4bytes << 2),
-			      u_pcibridge_aspmsetting);
-
-	rtl_dbg(rtlpriv, COMP_INIT, DBG_LOUD,
-		"PlatformEnableASPM(): Write reg[%x] = %x\n",
-		(pcipriv->ndis_adapter.pcibridge_pciehdr_offset + 0x10),
-		u_pcibridge_aspmsetting);
-
-	udelay(50);
-
 	/*Get ASPM level (with/without Clock Req) */
 	aspmlevel = rtlpci->const_devicepci_aspm_setting;
 	u_device_aspmsetting = pcipriv->ndis_adapter.linkctrl_reg;
@@ -291,7 +277,8 @@ static void rtl_pci_enable_aspm(struct ieee80211_hw *hw)
 
 	if (ppsc->reg_rfps_level & RT_RF_OFF_LEVL_CLK_REQ) {
 		_rtl_pci_switch_clk_req(hw, (ppsc->reg_rfps_level &
-					     RT_RF_OFF_LEVL_CLK_REQ) ? 1 : 0);
+					     RT_RF_OFF_LEVL_CLK_REQ) ?
+					     PCI_EXP_LNKCTL_CLKREQ_EN : 0);
 		RT_SET_PS_LEVEL(ppsc, RT_RF_OFF_LEVL_CLK_REQ);
 	}
 	udelay(100);
@@ -318,62 +305,6 @@ static bool rtl_pci_get_amd_l1_patch(struct ieee80211_hw *hw)
 	return status;
 }
 
-static bool rtl_pci_check_buddy_priv(struct ieee80211_hw *hw,
-				     struct rtl_priv **buddy_priv)
-{
-	struct rtl_priv *rtlpriv = rtl_priv(hw);
-	struct rtl_pci_priv *pcipriv = rtl_pcipriv(hw);
-	struct rtl_priv *tpriv = NULL, *iter;
-	struct rtl_pci_priv *tpcipriv = NULL;
-
-	if (!list_empty(&rtlpriv->glb_var->glb_priv_list)) {
-		list_for_each_entry(iter, &rtlpriv->glb_var->glb_priv_list,
-				    list) {
-			tpcipriv = (struct rtl_pci_priv *)iter->priv;
-			rtl_dbg(rtlpriv, COMP_INIT, DBG_LOUD,
-				"pcipriv->ndis_adapter.funcnumber %x\n",
-				pcipriv->ndis_adapter.funcnumber);
-			rtl_dbg(rtlpriv, COMP_INIT, DBG_LOUD,
-				"tpcipriv->ndis_adapter.funcnumber %x\n",
-				tpcipriv->ndis_adapter.funcnumber);
-
-			if (pcipriv->ndis_adapter.busnumber ==
-			    tpcipriv->ndis_adapter.busnumber &&
-			    pcipriv->ndis_adapter.devnumber ==
-			    tpcipriv->ndis_adapter.devnumber &&
-			    pcipriv->ndis_adapter.funcnumber !=
-			    tpcipriv->ndis_adapter.funcnumber) {
-				tpriv = iter;
-				break;
-			}
-		}
-	}
-
-	rtl_dbg(rtlpriv, COMP_INIT, DBG_LOUD,
-		"find_buddy_priv %d\n", tpriv != NULL);
-
-	if (tpriv)
-		*buddy_priv = tpriv;
-
-	return tpriv != NULL;
-}
-
-static void rtl_pci_get_linkcontrol_field(struct ieee80211_hw *hw)
-{
-	struct rtl_pci_priv *pcipriv = rtl_pcipriv(hw);
-	struct rtl_pci *rtlpci = rtl_pcidev(pcipriv);
-	u8 capabilityoffset = pcipriv->ndis_adapter.pcibridge_pciehdr_offset;
-	u8 linkctrl_reg;
-	u8 num4bbytes;
-
-	num4bbytes = (capabilityoffset + 0x10) / 4;
-
-	/*Read  Link Control Register */
-	pci_read_config_byte(rtlpci->pdev, (num4bbytes << 2), &linkctrl_reg);
-
-	pcipriv->ndis_adapter.pcibridge_linkctrlreg = linkctrl_reg;
-}
-
 static void rtl_pci_parse_configuration(struct pci_dev *pdev,
 					struct ieee80211_hw *hw)
 {
@@ -390,9 +321,8 @@ static void rtl_pci_parse_configuration(struct pci_dev *pdev,
 	rtl_dbg(rtlpriv, COMP_INIT, DBG_TRACE, "Link Control Register =%x\n",
 		pcipriv->ndis_adapter.linkctrl_reg);
 
-	pci_read_config_byte(pdev, 0x98, &tmp);
-	tmp |= BIT(4);
-	pci_write_config_byte(pdev, 0x98, tmp);
+	pcie_capability_set_word(pdev, PCI_EXP_DEVCTL2,
+				 PCI_EXP_DEVCTL2_COMP_TMOUT_DIS);
 
 	tmp = 0x17;
 	pci_write_config_byte(pdev, 0x70f, tmp);
@@ -418,13 +348,13 @@ static void _rtl_pci_io_handler_init(struct device *dev,
 
 	rtlpriv->io.dev = dev;
 
-	rtlpriv->io.write8_async = pci_write8_async;
-	rtlpriv->io.write16_async = pci_write16_async;
-	rtlpriv->io.write32_async = pci_write32_async;
+	rtlpriv->io.write8 = pci_write8_async;
+	rtlpriv->io.write16 = pci_write16_async;
+	rtlpriv->io.write32 = pci_write32_async;
 
-	rtlpriv->io.read8_sync = pci_read8_sync;
-	rtlpriv->io.read16_sync = pci_read16_sync;
-	rtlpriv->io.read32_sync = pci_read32_sync;
+	rtlpriv->io.read8 = pci_read8_sync;
+	rtlpriv->io.read16 = pci_read16_sync;
+	rtlpriv->io.read32 = pci_read32_sync;
 }
 
 static bool _rtl_update_earlymode_info(struct ieee80211_hw *hw,
@@ -642,8 +572,11 @@ remap:
 		dma_map_single(&rtlpci->pdev->dev, skb_tail_pointer(skb),
 			       rtlpci->rxbuffersize, DMA_FROM_DEVICE);
 	bufferaddress = *((dma_addr_t *)skb->cb);
-	if (dma_mapping_error(&rtlpci->pdev->dev, bufferaddress))
+	if (dma_mapping_error(&rtlpci->pdev->dev, bufferaddress)) {
+		if (!new_skb)
+			kfree_skb(skb);
 		return 0;
+	}
 	rtlpci->rx_ring[rxring_idx].rx_buf[desc_idx] = skb;
 	if (rtlpriv->use_new_trx_flow) {
 		/* skb->cb may be 64 bit address */
@@ -872,13 +805,19 @@ new_trx_end:
 		skb = new_skb;
 no_new:
 		if (rtlpriv->use_new_trx_flow) {
-			_rtl_pci_init_one_rxdesc(hw, skb, (u8 *)buffer_desc,
-						 rxring_idx,
-						 rtlpci->rx_ring[rxring_idx].idx);
+			if (!_rtl_pci_init_one_rxdesc(hw, skb, (u8 *)buffer_desc,
+						      rxring_idx,
+						      rtlpci->rx_ring[rxring_idx].idx)) {
+				if (new_skb)
+					dev_kfree_skb_any(skb);
+			}
 		} else {
-			_rtl_pci_init_one_rxdesc(hw, skb, (u8 *)pdesc,
-						 rxring_idx,
-						 rtlpci->rx_ring[rxring_idx].idx);
+			if (!_rtl_pci_init_one_rxdesc(hw, skb, (u8 *)pdesc,
+						      rxring_idx,
+						      rtlpci->rx_ring[rxring_idx].idx)) {
+				if (new_skb)
+					dev_kfree_skb_any(skb);
+			}
 			if (rtlpci->rx_ring[rxring_idx].idx ==
 			    rtlpci->rxringcount - 1)
 				rtlpriv->cfg->ops->set_desc(hw, (u8 *)pdesc,
@@ -1736,8 +1675,6 @@ static void rtl_pci_deinit(struct ieee80211_hw *hw)
 	synchronize_irq(rtlpci->pdev->irq);
 	tasklet_kill(&rtlpriv->works.irq_tasklet);
 	cancel_work_sync(&rtlpriv->works.lps_change_work);
-
-	destroy_workqueue(rtlpriv->works.rtl_wq);
 }
 
 static int rtl_pci_init(struct ieee80211_hw *hw, struct pci_dev *pdev)
@@ -2008,7 +1945,6 @@ static bool _rtl_pci_find_adapter(struct pci_dev *pdev,
 	 */
 	if (bridge_pdev) {
 		/*find bridge info if available */
-		pcipriv->ndis_adapter.pcibridge_vendorid = bridge_pdev->vendor;
 		for (tmp = 0; tmp < PCI_BRIDGE_VENDOR_MAX; tmp++) {
 			if (bridge_pdev->vendor == pcibridge_vendors[tmp]) {
 				pcipriv->ndis_adapter.pcibridge_vendor = tmp;
@@ -2028,12 +1964,6 @@ static bool _rtl_pci_find_adapter(struct pci_dev *pdev,
 		    PCI_SLOT(bridge_pdev->devfn);
 		pcipriv->ndis_adapter.pcibridge_funcnum =
 		    PCI_FUNC(bridge_pdev->devfn);
-		pcipriv->ndis_adapter.pcibridge_pciehdr_offset =
-		    pci_pcie_cap(bridge_pdev);
-		pcipriv->ndis_adapter.num4bytes =
-		    (pcipriv->ndis_adapter.pcibridge_pciehdr_offset + 0x10) / 4;
-
-		rtl_pci_get_linkcontrol_field(hw);
 
 		if (pcipriv->ndis_adapter.pcibridge_vendor ==
 		    PCI_BRIDGE_VENDOR_AMD) {
@@ -2050,17 +1980,14 @@ static bool _rtl_pci_find_adapter(struct pci_dev *pdev,
 		pdev->vendor, pcipriv->ndis_adapter.linkctrl_reg);
 
 	rtl_dbg(rtlpriv, COMP_INIT, DBG_DMESG,
-		"pci_bridge busnumber:devnumber:funcnumber:vendor:pcie_cap:link_ctl_reg:amd %d:%d:%d:%x:%x:%x:%x\n",
+		"pci_bridge busnumber:devnumber:funcnumber:vendor:amd %d:%d:%d:%x:%x\n",
 		pcipriv->ndis_adapter.pcibridge_busnum,
 		pcipriv->ndis_adapter.pcibridge_devnum,
 		pcipriv->ndis_adapter.pcibridge_funcnum,
 		pcibridge_vendors[pcipriv->ndis_adapter.pcibridge_vendor],
-		pcipriv->ndis_adapter.pcibridge_pciehdr_offset,
-		pcipriv->ndis_adapter.pcibridge_linkctrlreg,
 		pcipriv->ndis_adapter.amd_l1_patch);
 
 	rtl_pci_parse_configuration(pdev, hw);
-	list_add_tail(&rtlpriv->list, &rtlpriv->glb_var->glb_priv_list);
 
 	return true;
 }
@@ -2207,7 +2134,6 @@ int rtl_pci_probe(struct pci_dev *pdev,
 	rtlpriv->rtlhal.interface = INTF_PCI;
 	rtlpriv->cfg = (struct rtl_hal_cfg *)(id->driver_data);
 	rtlpriv->intf_ops = &rtl_pci_ops;
-	rtlpriv->glb_var = &rtl_global_var;
 	rtl_efuse_ops_init(hw);
 
 	/* MEM map */
@@ -2258,7 +2184,7 @@ int rtl_pci_probe(struct pci_dev *pdev,
 	if (rtlpriv->cfg->ops->init_sw_vars(hw)) {
 		pr_err("Can't init_sw_vars\n");
 		err = -ENODEV;
-		goto fail3;
+		goto fail2;
 	}
 	rtl_init_sw_leds(hw);
 
@@ -2276,14 +2202,14 @@ int rtl_pci_probe(struct pci_dev *pdev,
 	err = rtl_pci_init(hw, pdev);
 	if (err) {
 		pr_err("Failed to init PCI\n");
-		goto fail3;
+		goto fail4;
 	}
 
 	err = ieee80211_register_hw(hw);
 	if (err) {
 		pr_err("Can't register mac80211 hw.\n");
 		err = -ENODEV;
-		goto fail3;
+		goto fail5;
 	}
 	rtlpriv->mac80211.mac80211_registered = 1;
 
@@ -2306,16 +2232,19 @@ int rtl_pci_probe(struct pci_dev *pdev,
 	set_bit(RTL_STATUS_INTERFACE_START, &rtlpriv->status);
 	return 0;
 
-fail3:
-	pci_set_drvdata(pdev, NULL);
+fail5:
+	rtl_pci_deinit(hw);
+fail4:
 	rtl_deinit_core(hw);
+fail3:
+	wait_for_completion(&rtlpriv->firmware_loading_complete);
+	rtlpriv->cfg->ops->deinit_sw_vars(hw);
 
 fail2:
 	if (rtlpriv->io.pci_mem_start != 0)
 		pci_iounmap(pdev, (void __iomem *)rtlpriv->io.pci_mem_start);
 
 	pci_release_regions(pdev);
-	complete(&rtlpriv->firmware_loading_complete);
 
 fail1:
 	if (hw)
@@ -2366,7 +2295,6 @@ void rtl_pci_disconnect(struct pci_dev *pdev)
 	if (rtlpci->using_msi)
 		pci_disable_msi(rtlpci->pdev);
 
-	list_del(&rtlpriv->list);
 	if (rtlpriv->io.pci_mem_start != 0) {
 		pci_iounmap(pdev, (void __iomem *)rtlpriv->io.pci_mem_start);
 		pci_release_regions(pdev);
@@ -2423,10 +2351,8 @@ EXPORT_SYMBOL(rtl_pci_resume);
 #endif /* CONFIG_PM_SLEEP */
 
 const struct rtl_intf_ops rtl_pci_ops = {
-	.read_efuse_byte = read_efuse_byte,
 	.adapter_start = rtl_pci_start,
 	.adapter_stop = rtl_pci_stop,
-	.check_buddy_priv = rtl_pci_check_buddy_priv,
 	.adapter_tx = rtl_pci_tx,
 	.flush = rtl_pci_flush,
 	.reset_trx_ring = rtl_pci_reset_trx_ring,