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Date: Fri, 17 Nov 2023 11:44:20 +0200
From: Ilpo Järvinen <ilpo.jarvinen@...ux.intel.com>
To: "John W. Linville" <linville@...driver.com>,
Kalle Valo <kvalo@...nel.org>,
Larry Finger <Larry.Finger@...inger.net>,
linux-wireless@...r.kernel.org, Ping-Ke Shih <pkshih@...ltek.com>,
Bjorn Helgaas <bhelgaas@...gle.com>,
linux-kernel@...r.kernel.org
Cc: Ilpo Järvinen <ilpo.jarvinen@...ux.intel.com>
Subject: [PATCH 2/7] wifi: rtlwifi: Convert to use PCIe capability accessors
The rtlwifi driver accesses PCIe capabilities through custom config
offsets.
Convert the accesses to use the normal PCIe capability accessors.
pcibridge_pciehdr_offset in the struct mp_adapter becomes unused after
the conversion and can be removed.
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@...ux.intel.com>
---
drivers/net/wireless/realtek/rtlwifi/pci.c | 30 ++++++++--------------
drivers/net/wireless/realtek/rtlwifi/pci.h | 1 -
2 files changed, 11 insertions(+), 20 deletions(-)
diff --git a/drivers/net/wireless/realtek/rtlwifi/pci.c b/drivers/net/wireless/realtek/rtlwifi/pci.c
index d67a9617a19c..0c6f03d845a9 100644
--- a/drivers/net/wireless/realtek/rtlwifi/pci.c
+++ b/drivers/net/wireless/realtek/rtlwifi/pci.c
@@ -64,7 +64,7 @@ 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;
@@ -151,9 +151,10 @@ 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;
}
@@ -201,7 +202,7 @@ static void rtl_pci_disable_aspm(struct ieee80211_hw *hw)
/*Retrieve original configuration settings. */
u8 linkctrl_reg = pcipriv->ndis_adapter.linkctrl_reg;
u16 aspmlevel = 0;
- u8 tmp_u1b = 0;
+ u16 tmp_u1b = 0;
if (!ppsc->support_aspm)
return;
@@ -219,7 +220,7 @@ 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);
@@ -363,14 +364,9 @@ 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;
+ u16 linkctrl_reg;
- /*Read Link Control Register */
- pci_read_config_byte(rtlpci->pdev, (num4bbytes << 2), &linkctrl_reg);
+ pcie_capability_read_word(rtlpci->pdev, PCI_EXP_LNKCTL, &linkctrl_reg);
pcipriv->ndis_adapter.pcibridge_linkctrlreg = linkctrl_reg;
}
@@ -391,9 +387,8 @@ 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);
@@ -2029,8 +2024,6 @@ 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);
rtl_pci_get_linkcontrol_field(hw);
@@ -2049,12 +2042,11 @@ 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:link_ctl_reg:amd %d:%d:%d:%x:%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);
diff --git a/drivers/net/wireless/realtek/rtlwifi/pci.h b/drivers/net/wireless/realtek/rtlwifi/pci.h
index 57174b93db83..281da0b52564 100644
--- a/drivers/net/wireless/realtek/rtlwifi/pci.h
+++ b/drivers/net/wireless/realtek/rtlwifi/pci.h
@@ -236,7 +236,6 @@ struct mp_adapter {
u16 pcibridge_vendorid;
u16 pcibridge_deviceid;
- u8 pcibridge_pciehdr_offset;
u8 pcibridge_linkctrlreg;
bool amd_l1_patch;
--
2.30.2
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