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From:   Ping-Ke Shih <pkshih@realtek.com>
To:     <kvalo@kernel.org>
CC:     <linux-wireless@vger.kernel.org>
Subject: [PATCH 5/5] wifi: rtw89: pci: implement PCI mac_post_init for WiFi 7 chips
Date:   Wed, 1 Nov 2023 15:21:49 +0800
Message-ID: <20231101072149.21997-6-pkshih@realtek.com>
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For normal use, we do additional settings than mac_pre_init, such as
more TX/RX DMA channels, interrupt mitigation and etc.

Signed-off-by: Ping-Ke Shih <pkshih@realtek.com>
---
 drivers/net/wireless/realtek/rtw89/pci.h    | 44 +++++++++++++++++++++
 drivers/net/wireless/realtek/rtw89/pci_be.c | 36 +++++++++++++++++
 2 files changed, 80 insertions(+)

diff --git a/drivers/net/wireless/realtek/rtw89/pci.h b/drivers/net/wireless/realtek/rtw89/pci.h
index 9b39ca4bbb66..37398e416e58 100644
--- a/drivers/net/wireless/realtek/rtw89/pci.h
+++ b/drivers/net/wireless/realtek/rtw89/pci.h
@@ -708,6 +708,45 @@
 #define B_BE_END_PL1_CNT_MASK GENMASK(23, 16)
 #define B_BE_START_PL1_CNT_MASK GENMASK(7, 0)
 
+#define R_BE_PCIE_MIT0_TMR 0x3330
+#define B_BE_PCIE_MIT0_RX_TMR_MASK GENMASK(5, 4)
+#define BE_MIT0_TMR_UNIT_1MS 0
+#define BE_MIT0_TMR_UNIT_2MS 1
+#define BE_MIT0_TMR_UNIT_4MS 2
+#define BE_MIT0_TMR_UNIT_8MS 3
+#define B_BE_PCIE_MIT0_TX_TMR_MASK GENMASK(1, 0)
+
+#define R_BE_PCIE_MIT0_CNT 0x3334
+#define B_BE_PCIE_RX_MIT0_CNT_MASK GENMASK(31, 24)
+#define B_BE_PCIE_TX_MIT0_CNT_MASK GENMASK(23, 16)
+#define B_BE_PCIE_RX_MIT0_TMR_CNT_MASK GENMASK(15, 8)
+#define B_BE_PCIE_TX_MIT0_TMR_CNT_MASK GENMASK(7, 0)
+
+#define R_BE_PCIE_MIT_CH_EN 0x3338
+#define B_BE_PCIE_MIT_RX1P1_EN BIT(23)
+#define B_BE_PCIE_MIT_RX0P1_EN BIT(22)
+#define B_BE_PCIE_MIT_ROQ1_EN BIT(21)
+#define B_BE_PCIE_MIT_RPQ1_EN BIT(20)
+#define B_BE_PCIE_MIT_RX1P2_EN BIT(19)
+#define B_BE_PCIE_MIT_ROQ0_EN BIT(18)
+#define B_BE_PCIE_MIT_RPQ0_EN BIT(17)
+#define B_BE_PCIE_MIT_RX0P2_EN BIT(16)
+#define B_BE_PCIE_MIT_TXCH14_EN BIT(14)
+#define B_BE_PCIE_MIT_TXCH13_EN BIT(13)
+#define B_BE_PCIE_MIT_TXCH12_EN BIT(12)
+#define B_BE_PCIE_MIT_TXCH11_EN BIT(11)
+#define B_BE_PCIE_MIT_TXCH10_EN BIT(10)
+#define B_BE_PCIE_MIT_TXCH9_EN BIT(9)
+#define B_BE_PCIE_MIT_TXCH8_EN BIT(8)
+#define B_BE_PCIE_MIT_TXCH7_EN BIT(7)
+#define B_BE_PCIE_MIT_TXCH6_EN BIT(6)
+#define B_BE_PCIE_MIT_TXCH5_EN BIT(5)
+#define B_BE_PCIE_MIT_TXCH4_EN BIT(4)
+#define B_BE_PCIE_MIT_TXCH3_EN BIT(3)
+#define B_BE_PCIE_MIT_TXCH2_EN BIT(2)
+#define B_BE_PCIE_MIT_TXCH1_EN BIT(1)
+#define B_BE_PCIE_MIT_TXCH0_EN BIT(0)
+
 #define R_BE_SER_PL1_CTRL 0x34A8
 #define B_BE_PL1_SER_PL1_EN BIT(31)
 #define B_BE_PL1_IGNORE_HOT_RST BIT(30)
@@ -800,12 +839,15 @@
 #define RTW89_PCI_MULTITAG		8
 
 /* PCIE CFG register */
+#define RTW89_PCIE_CAPABILITY_SPEED	0x7C
+#define RTW89_PCIE_SUPPORT_GEN_MASK	GENMASK(3, 0)
 #define RTW89_PCIE_L1_STS_V1		0x80
 #define RTW89_BCFG_LINK_SPEED_MASK	GENMASK(19, 16)
 #define RTW89_PCIE_GEN1_SPEED		0x01
 #define RTW89_PCIE_GEN2_SPEED		0x02
 #define RTW89_PCIE_PHY_RATE		0x82
 #define RTW89_PCIE_PHY_RATE_MASK	GENMASK(1, 0)
+#define RTW89_PCIE_LINK_CHANGE_SPEED	0xA0
 #define RTW89_PCIE_L1SS_STS_V1		0x0168
 #define RTW89_PCIE_BIT_ASPM_L11		BIT(3)
 #define RTW89_PCIE_BIT_ASPM_L12		BIT(2)
@@ -820,6 +862,8 @@
 #define RTW89_PCIE_BIT_CLK		BIT(4)
 #define RTW89_PCIE_BIT_L1		BIT(3)
 #define RTW89_PCIE_CLK_CTRL		0x0725
+#define RTW89_PCIE_FTS			0x080C
+#define RTW89_PCIE_POLLING_BIT		BIT(17)
 #define RTW89_PCIE_RST_MSTATE		0x0B48
 #define RTW89_PCIE_BIT_CFG_RST_MSTATE	BIT(0)
 
diff --git a/drivers/net/wireless/realtek/rtw89/pci_be.c b/drivers/net/wireless/realtek/rtw89/pci_be.c
index 33c841613c3d..f3aab34a3a24 100644
--- a/drivers/net/wireless/realtek/rtw89/pci_be.c
+++ b/drivers/net/wireless/realtek/rtw89/pci_be.c
@@ -385,8 +385,44 @@ int rtw89_pci_ltr_set_v2(struct rtw89_dev *rtwdev, bool en)
 }
 EXPORT_SYMBOL(rtw89_pci_ltr_set_v2);
 
+static void rtw89_pci_configure_mit_be(struct rtw89_dev *rtwdev)
+{
+	u32 cnt;
+	u32 val;
+
+	rtw89_write32_mask(rtwdev, R_BE_PCIE_MIT0_TMR,
+			   B_BE_PCIE_MIT0_RX_TMR_MASK, BE_MIT0_TMR_UNIT_1MS);
+
+	val = rtw89_read32(rtwdev, R_BE_PCIE_MIT0_CNT);
+	cnt = min_t(u32, U8_MAX, RTW89_PCI_RXBD_NUM_MAX / 2);
+	val = u32_replace_bits(val, cnt, B_BE_PCIE_RX_MIT0_CNT_MASK);
+	val = u32_replace_bits(val, 2, B_BE_PCIE_RX_MIT0_TMR_CNT_MASK);
+	rtw89_write32(rtwdev, R_BE_PCIE_MIT0_CNT, val);
+}
+
+static int rtw89_pci_ops_mac_post_init_be(struct rtw89_dev *rtwdev)
+{
+	const struct rtw89_pci_info *info = rtwdev->pci_info;
+	int ret;
+
+	ret = info->ltr_set(rtwdev, true);
+	if (ret) {
+		rtw89_err(rtwdev, "pci ltr set fail\n");
+		return ret;
+	}
+
+	rtw89_pci_ctrl_trxdma_pcie_be(rtwdev, MAC_AX_PCIE_IGNORE,
+				      MAC_AX_PCIE_IGNORE, MAC_AX_PCIE_ENABLE);
+	rtw89_pci_ctrl_wpdma_pcie_be(rtwdev, true);
+	rtw89_pci_ctrl_txdma_ch_be(rtwdev, true, true);
+	rtw89_pci_configure_mit_be(rtwdev);
+
+	return 0;
+}
+
 const struct rtw89_pci_gen_def rtw89_pci_gen_be = {
 	.mac_pre_init = rtw89_pci_ops_mac_pre_init_be,
+	.mac_post_init = rtw89_pci_ops_mac_post_init_be,
 
 	.clr_idx_all = rtw89_pci_clr_idx_all_be,
 };
-- 
2.25.1