| Author | Tokens | Token Proportion | Commits | Commit Proportion |
|---|---|---|---|---|
| Ben Chuang | 4499 | 90.82% | 18 | 66.67% |
| Hector Martin | 171 | 3.45% | 2 | 7.41% |
| Renius Chen | 130 | 2.62% | 4 | 14.81% |
| Ren Zhijie | 127 | 2.56% | 1 | 3.70% |
| Jason Lai | 24 | 0.48% | 1 | 3.70% |
| Daniel Beer | 3 | 0.06% | 1 | 3.70% |
| Total | 4954 | 27 |
// SPDX-License-Identifier: GPL-2.0+ /* * Copyright (C) 2019 Genesys Logic, Inc. * * Authors: Ben Chuang <ben.chuang@genesyslogic.com.tw> * * Version: v0.9.0 (2019-08-08) */ #include <linux/bitfield.h> #include <linux/bits.h> #include <linux/pci.h> #include <linux/mmc/mmc.h> #include <linux/delay.h> #include <linux/of.h> #include <linux/iopoll.h> #include "sdhci.h" #include "sdhci-pci.h" #include "cqhci.h" /* Genesys Logic extra registers */ #define SDHCI_GLI_9750_WT 0x800 #define SDHCI_GLI_9750_WT_EN BIT(0) #define GLI_9750_WT_EN_ON 0x1 #define GLI_9750_WT_EN_OFF 0x0 #define SDHCI_GLI_9750_CFG2 0x848 #define SDHCI_GLI_9750_CFG2_L1DLY GENMASK(28, 24) #define GLI_9750_CFG2_L1DLY_VALUE 0x1F #define SDHCI_GLI_9750_DRIVING 0x860 #define SDHCI_GLI_9750_DRIVING_1 GENMASK(11, 0) #define SDHCI_GLI_9750_DRIVING_2 GENMASK(27, 26) #define GLI_9750_DRIVING_1_VALUE 0xFFF #define GLI_9750_DRIVING_2_VALUE 0x3 #define SDHCI_GLI_9750_SEL_1 BIT(29) #define SDHCI_GLI_9750_SEL_2 BIT(31) #define SDHCI_GLI_9750_ALL_RST (BIT(24)|BIT(25)|BIT(28)|BIT(30)) #define SDHCI_GLI_9750_PLL 0x864 #define SDHCI_GLI_9750_PLL_LDIV GENMASK(9, 0) #define SDHCI_GLI_9750_PLL_PDIV GENMASK(14, 12) #define SDHCI_GLI_9750_PLL_DIR BIT(15) #define SDHCI_GLI_9750_PLL_TX2_INV BIT(23) #define SDHCI_GLI_9750_PLL_TX2_DLY GENMASK(22, 20) #define GLI_9750_PLL_TX2_INV_VALUE 0x1 #define GLI_9750_PLL_TX2_DLY_VALUE 0x0 #define SDHCI_GLI_9750_PLLSSC_STEP GENMASK(28, 24) #define SDHCI_GLI_9750_PLLSSC_EN BIT(31) #define SDHCI_GLI_9750_PLLSSC 0x86C #define SDHCI_GLI_9750_PLLSSC_PPM GENMASK(31, 16) #define SDHCI_GLI_9750_SW_CTRL 0x874 #define SDHCI_GLI_9750_SW_CTRL_4 GENMASK(7, 6) #define GLI_9750_SW_CTRL_4_VALUE 0x3 #define SDHCI_GLI_9750_MISC 0x878 #define SDHCI_GLI_9750_MISC_TX1_INV BIT(2) #define SDHCI_GLI_9750_MISC_RX_INV BIT(3) #define SDHCI_GLI_9750_MISC_TX1_DLY GENMASK(6, 4) #define GLI_9750_MISC_TX1_INV_VALUE 0x0 #define GLI_9750_MISC_RX_INV_ON 0x1 #define GLI_9750_MISC_RX_INV_OFF 0x0 #define GLI_9750_MISC_RX_INV_VALUE GLI_9750_MISC_RX_INV_OFF #define GLI_9750_MISC_TX1_DLY_VALUE 0x5 #define SDHCI_GLI_9750_MISC_SSC_OFF BIT(26) #define SDHCI_GLI_9750_TUNING_CONTROL 0x540 #define SDHCI_GLI_9750_TUNING_CONTROL_EN BIT(4) #define GLI_9750_TUNING_CONTROL_EN_ON 0x1 #define GLI_9750_TUNING_CONTROL_EN_OFF 0x0 #define SDHCI_GLI_9750_TUNING_CONTROL_GLITCH_1 BIT(16) #define SDHCI_GLI_9750_TUNING_CONTROL_GLITCH_2 GENMASK(20, 19) #define GLI_9750_TUNING_CONTROL_GLITCH_1_VALUE 0x1 #define GLI_9750_TUNING_CONTROL_GLITCH_2_VALUE 0x2 #define SDHCI_GLI_9750_TUNING_PARAMETERS 0x544 #define SDHCI_GLI_9750_TUNING_PARAMETERS_RX_DLY GENMASK(2, 0) #define GLI_9750_TUNING_PARAMETERS_RX_DLY_VALUE 0x1 #define SDHCI_GLI_9763E_CTRL_HS400 0x7 #define SDHCI_GLI_9763E_HS400_ES_REG 0x52C #define SDHCI_GLI_9763E_HS400_ES_BIT BIT(8) #define PCIE_GLI_9763E_VHS 0x884 #define GLI_9763E_VHS_REV GENMASK(19, 16) #define GLI_9763E_VHS_REV_R 0x0 #define GLI_9763E_VHS_REV_M 0x1 #define GLI_9763E_VHS_REV_W 0x2 #define PCIE_GLI_9763E_MB 0x888 #define GLI_9763E_MB_CMDQ_OFF BIT(19) #define GLI_9763E_MB_ERP_ON BIT(7) #define PCIE_GLI_9763E_SCR 0x8E0 #define GLI_9763E_SCR_AXI_REQ BIT(9) #define PCIE_GLI_9763E_CFG 0x8A0 #define GLI_9763E_CFG_LPSN_DIS BIT(12) #define PCIE_GLI_9763E_CFG2 0x8A4 #define GLI_9763E_CFG2_L1DLY GENMASK(28, 19) #define GLI_9763E_CFG2_L1DLY_MID 0x54 #define PCIE_GLI_9763E_MMC_CTRL 0x960 #define GLI_9763E_HS400_SLOW BIT(3) #define PCIE_GLI_9763E_CLKRXDLY 0x934 #define GLI_9763E_HS400_RXDLY GENMASK(31, 28) #define GLI_9763E_HS400_RXDLY_5 0x5 #define SDHCI_GLI_9763E_CQE_BASE_ADDR 0x200 #define GLI_9763E_CQE_TRNS_MODE (SDHCI_TRNS_MULTI | \ SDHCI_TRNS_BLK_CNT_EN | \ SDHCI_TRNS_DMA) #define PCI_GLI_9755_WT 0x800 #define PCI_GLI_9755_WT_EN BIT(0) #define GLI_9755_WT_EN_ON 0x1 #define GLI_9755_WT_EN_OFF 0x0 #define PCI_GLI_9755_PECONF 0x44 #define PCI_GLI_9755_LFCLK GENMASK(14, 12) #define PCI_GLI_9755_DMACLK BIT(29) #define PCI_GLI_9755_INVERT_CD BIT(30) #define PCI_GLI_9755_INVERT_WP BIT(31) #define PCI_GLI_9755_CFG2 0x48 #define PCI_GLI_9755_CFG2_L1DLY GENMASK(28, 24) #define GLI_9755_CFG2_L1DLY_VALUE 0x1F #define PCI_GLI_9755_PLL 0x64 #define PCI_GLI_9755_PLL_LDIV GENMASK(9, 0) #define PCI_GLI_9755_PLL_PDIV GENMASK(14, 12) #define PCI_GLI_9755_PLL_DIR BIT(15) #define PCI_GLI_9755_PLLSSC_STEP GENMASK(28, 24) #define PCI_GLI_9755_PLLSSC_EN BIT(31) #define PCI_GLI_9755_PLLSSC 0x68 #define PCI_GLI_9755_PLLSSC_PPM GENMASK(15, 0) #define PCI_GLI_9755_SerDes 0x70 #define PCI_GLI_9755_SCP_DIS BIT(19) #define PCI_GLI_9755_MISC 0x78 #define PCI_GLI_9755_MISC_SSC_OFF BIT(26) #define PCI_GLI_9755_PM_CTRL 0xFC #define PCI_GLI_9755_PM_STATE GENMASK(1, 0) #define GLI_MAX_TUNING_LOOP 40 /* Genesys Logic chipset */ static inline void gl9750_wt_on(struct sdhci_host *host) { u32 wt_value; u32 wt_enable; wt_value = sdhci_readl(host, SDHCI_GLI_9750_WT); wt_enable = FIELD_GET(SDHCI_GLI_9750_WT_EN, wt_value); if (wt_enable == GLI_9750_WT_EN_ON) return; wt_value &= ~SDHCI_GLI_9750_WT_EN; wt_value |= FIELD_PREP(SDHCI_GLI_9750_WT_EN, GLI_9750_WT_EN_ON); sdhci_writel(host, wt_value, SDHCI_GLI_9750_WT); } static inline void gl9750_wt_off(struct sdhci_host *host) { u32 wt_value; u32 wt_enable; wt_value = sdhci_readl(host, SDHCI_GLI_9750_WT); wt_enable = FIELD_GET(SDHCI_GLI_9750_WT_EN, wt_value); if (wt_enable == GLI_9750_WT_EN_OFF) return; wt_value &= ~SDHCI_GLI_9750_WT_EN; wt_value |= FIELD_PREP(SDHCI_GLI_9750_WT_EN, GLI_9750_WT_EN_OFF); sdhci_writel(host, wt_value, SDHCI_GLI_9750_WT); } static void gli_set_9750(struct sdhci_host *host) { u32 driving_value; u32 pll_value; u32 sw_ctrl_value; u32 misc_value; u32 parameter_value; u32 control_value; u16 ctrl2; gl9750_wt_on(host); driving_value = sdhci_readl(host, SDHCI_GLI_9750_DRIVING); pll_value = sdhci_readl(host, SDHCI_GLI_9750_PLL); sw_ctrl_value = sdhci_readl(host, SDHCI_GLI_9750_SW_CTRL); misc_value = sdhci_readl(host, SDHCI_GLI_9750_MISC); parameter_value = sdhci_readl(host, SDHCI_GLI_9750_TUNING_PARAMETERS); control_value = sdhci_readl(host, SDHCI_GLI_9750_TUNING_CONTROL); driving_value &= ~(SDHCI_GLI_9750_DRIVING_1); driving_value &= ~(SDHCI_GLI_9750_DRIVING_2); driving_value |= FIELD_PREP(SDHCI_GLI_9750_DRIVING_1, GLI_9750_DRIVING_1_VALUE); driving_value |= FIELD_PREP(SDHCI_GLI_9750_DRIVING_2, GLI_9750_DRIVING_2_VALUE); driving_value &= ~(SDHCI_GLI_9750_SEL_1|SDHCI_GLI_9750_SEL_2|SDHCI_GLI_9750_ALL_RST); driving_value |= SDHCI_GLI_9750_SEL_2; sdhci_writel(host, driving_value, SDHCI_GLI_9750_DRIVING); sw_ctrl_value &= ~SDHCI_GLI_9750_SW_CTRL_4; sw_ctrl_value |= FIELD_PREP(SDHCI_GLI_9750_SW_CTRL_4, GLI_9750_SW_CTRL_4_VALUE); sdhci_writel(host, sw_ctrl_value, SDHCI_GLI_9750_SW_CTRL); /* reset the tuning flow after reinit and before starting tuning */ pll_value &= ~SDHCI_GLI_9750_PLL_TX2_INV; pll_value &= ~SDHCI_GLI_9750_PLL_TX2_DLY; pll_value |= FIELD_PREP(SDHCI_GLI_9750_PLL_TX2_INV, GLI_9750_PLL_TX2_INV_VALUE); pll_value |= FIELD_PREP(SDHCI_GLI_9750_PLL_TX2_DLY, GLI_9750_PLL_TX2_DLY_VALUE); misc_value &= ~SDHCI_GLI_9750_MISC_TX1_INV; misc_value &= ~SDHCI_GLI_9750_MISC_RX_INV; misc_value &= ~SDHCI_GLI_9750_MISC_TX1_DLY; misc_value |= FIELD_PREP(SDHCI_GLI_9750_MISC_TX1_INV, GLI_9750_MISC_TX1_INV_VALUE); misc_value |= FIELD_PREP(SDHCI_GLI_9750_MISC_RX_INV, GLI_9750_MISC_RX_INV_VALUE); misc_value |= FIELD_PREP(SDHCI_GLI_9750_MISC_TX1_DLY, GLI_9750_MISC_TX1_DLY_VALUE); parameter_value &= ~SDHCI_GLI_9750_TUNING_PARAMETERS_RX_DLY; parameter_value |= FIELD_PREP(SDHCI_GLI_9750_TUNING_PARAMETERS_RX_DLY, GLI_9750_TUNING_PARAMETERS_RX_DLY_VALUE); control_value &= ~SDHCI_GLI_9750_TUNING_CONTROL_GLITCH_1; control_value &= ~SDHCI_GLI_9750_TUNING_CONTROL_GLITCH_2; control_value |= FIELD_PREP(SDHCI_GLI_9750_TUNING_CONTROL_GLITCH_1, GLI_9750_TUNING_CONTROL_GLITCH_1_VALUE); control_value |= FIELD_PREP(SDHCI_GLI_9750_TUNING_CONTROL_GLITCH_2, GLI_9750_TUNING_CONTROL_GLITCH_2_VALUE); sdhci_writel(host, pll_value, SDHCI_GLI_9750_PLL); sdhci_writel(host, misc_value, SDHCI_GLI_9750_MISC); /* disable tuned clk */ ctrl2 = sdhci_readw(host, SDHCI_HOST_CONTROL2); ctrl2 &= ~SDHCI_CTRL_TUNED_CLK; sdhci_writew(host, ctrl2, SDHCI_HOST_CONTROL2); /* enable tuning parameters control */ control_value &= ~SDHCI_GLI_9750_TUNING_CONTROL_EN; control_value |= FIELD_PREP(SDHCI_GLI_9750_TUNING_CONTROL_EN, GLI_9750_TUNING_CONTROL_EN_ON); sdhci_writel(host, control_value, SDHCI_GLI_9750_TUNING_CONTROL); /* write tuning parameters */ sdhci_writel(host, parameter_value, SDHCI_GLI_9750_TUNING_PARAMETERS); /* disable tuning parameters control */ control_value &= ~SDHCI_GLI_9750_TUNING_CONTROL_EN; control_value |= FIELD_PREP(SDHCI_GLI_9750_TUNING_CONTROL_EN, GLI_9750_TUNING_CONTROL_EN_OFF); sdhci_writel(host, control_value, SDHCI_GLI_9750_TUNING_CONTROL); /* clear tuned clk */ ctrl2 = sdhci_readw(host, SDHCI_HOST_CONTROL2); ctrl2 &= ~SDHCI_CTRL_TUNED_CLK; sdhci_writew(host, ctrl2, SDHCI_HOST_CONTROL2); gl9750_wt_off(host); } static void gli_set_9750_rx_inv(struct sdhci_host *host, bool b) { u32 misc_value; gl9750_wt_on(host); misc_value = sdhci_readl(host, SDHCI_GLI_9750_MISC); misc_value &= ~SDHCI_GLI_9750_MISC_RX_INV; if (b) { misc_value |= FIELD_PREP(SDHCI_GLI_9750_MISC_RX_INV, GLI_9750_MISC_RX_INV_ON); } else { misc_value |= FIELD_PREP(SDHCI_GLI_9750_MISC_RX_INV, GLI_9750_MISC_RX_INV_OFF); } sdhci_writel(host, misc_value, SDHCI_GLI_9750_MISC); gl9750_wt_off(host); } static int __sdhci_execute_tuning_9750(struct sdhci_host *host, u32 opcode) { int i; int rx_inv; for (rx_inv = 0; rx_inv < 2; rx_inv++) { gli_set_9750_rx_inv(host, !!rx_inv); sdhci_start_tuning(host); for (i = 0; i < GLI_MAX_TUNING_LOOP; i++) { u16 ctrl; sdhci_send_tuning(host, opcode); if (!host->tuning_done) { sdhci_abort_tuning(host, opcode); break; } ctrl = sdhci_readw(host, SDHCI_HOST_CONTROL2); if (!(ctrl & SDHCI_CTRL_EXEC_TUNING)) { if (ctrl & SDHCI_CTRL_TUNED_CLK) return 0; /* Success! */ break; } } } if (!host->tuning_done) { pr_info("%s: Tuning timeout, falling back to fixed sampling clock\n", mmc_hostname(host->mmc)); return -ETIMEDOUT; } pr_info("%s: Tuning failed, falling back to fixed sampling clock\n", mmc_hostname(host->mmc)); sdhci_reset_tuning(host); return -EAGAIN; } static int gl9750_execute_tuning(struct sdhci_host *host, u32 opcode) { host->mmc->retune_period = 0; if (host->tuning_mode == SDHCI_TUNING_MODE_1) host->mmc->retune_period = host->tuning_count; gli_set_9750(host); host->tuning_err = __sdhci_execute_tuning_9750(host, opcode); sdhci_end_tuning(host); return 0; } static void gl9750_disable_ssc_pll(struct sdhci_host *host) { u32 pll; gl9750_wt_on(host); pll = sdhci_readl(host, SDHCI_GLI_9750_PLL); pll &= ~(SDHCI_GLI_9750_PLL_DIR | SDHCI_GLI_9750_PLLSSC_EN); sdhci_writel(host, pll, SDHCI_GLI_9750_PLL); gl9750_wt_off(host); } static void gl9750_set_pll(struct sdhci_host *host, u8 dir, u16 ldiv, u8 pdiv) { u32 pll; gl9750_wt_on(host); pll = sdhci_readl(host, SDHCI_GLI_9750_PLL); pll &= ~(SDHCI_GLI_9750_PLL_LDIV | SDHCI_GLI_9750_PLL_PDIV | SDHCI_GLI_9750_PLL_DIR); pll |= FIELD_PREP(SDHCI_GLI_9750_PLL_LDIV, ldiv) | FIELD_PREP(SDHCI_GLI_9750_PLL_PDIV, pdiv) | FIELD_PREP(SDHCI_GLI_9750_PLL_DIR, dir); sdhci_writel(host, pll, SDHCI_GLI_9750_PLL); gl9750_wt_off(host); /* wait for pll stable */ mdelay(1); } static bool gl9750_ssc_enable(struct sdhci_host *host) { u32 misc; u8 off; gl9750_wt_on(host); misc = sdhci_readl(host, SDHCI_GLI_9750_MISC); off = FIELD_GET(SDHCI_GLI_9750_MISC_SSC_OFF, misc); gl9750_wt_off(host); return !off; } static void gl9750_set_ssc(struct sdhci_host *host, u8 enable, u8 step, u16 ppm) { u32 pll; u32 ssc; gl9750_wt_on(host); pll = sdhci_readl(host, SDHCI_GLI_9750_PLL); ssc = sdhci_readl(host, SDHCI_GLI_9750_PLLSSC); pll &= ~(SDHCI_GLI_9750_PLLSSC_STEP | SDHCI_GLI_9750_PLLSSC_EN); ssc &= ~SDHCI_GLI_9750_PLLSSC_PPM; pll |= FIELD_PREP(SDHCI_GLI_9750_PLLSSC_STEP, step) | FIELD_PREP(SDHCI_GLI_9750_PLLSSC_EN, enable); ssc |= FIELD_PREP(SDHCI_GLI_9750_PLLSSC_PPM, ppm); sdhci_writel(host, ssc, SDHCI_GLI_9750_PLLSSC); sdhci_writel(host, pll, SDHCI_GLI_9750_PLL); gl9750_wt_off(host); } static void gl9750_set_ssc_pll_205mhz(struct sdhci_host *host) { bool enable = gl9750_ssc_enable(host); /* set pll to 205MHz and ssc */ gl9750_set_ssc(host, enable, 0xF, 0x5A1D); gl9750_set_pll(host, 0x1, 0x246, 0x0); } static void gl9750_set_ssc_pll_100mhz(struct sdhci_host *host) { bool enable = gl9750_ssc_enable(host); /* set pll to 100MHz and ssc */ gl9750_set_ssc(host, enable, 0xE, 0x51EC); gl9750_set_pll(host, 0x1, 0x244, 0x1); } static void gl9750_set_ssc_pll_50mhz(struct sdhci_host *host) { bool enable = gl9750_ssc_enable(host); /* set pll to 50MHz and ssc */ gl9750_set_ssc(host, enable, 0xE, 0x51EC); gl9750_set_pll(host, 0x1, 0x244, 0x3); } static void sdhci_gl9750_set_clock(struct sdhci_host *host, unsigned int clock) { struct mmc_ios *ios = &host->mmc->ios; u16 clk; host->mmc->actual_clock = 0; gl9750_disable_ssc_pll(host); sdhci_writew(host, 0, SDHCI_CLOCK_CONTROL); if (clock == 0) return; clk = sdhci_calc_clk(host, clock, &host->mmc->actual_clock); if (clock == 200000000 && ios->timing == MMC_TIMING_UHS_SDR104) { host->mmc->actual_clock = 205000000; gl9750_set_ssc_pll_205mhz(host); } else if (clock == 100000000) { gl9750_set_ssc_pll_100mhz(host); } else if (clock == 50000000) { gl9750_set_ssc_pll_50mhz(host); } sdhci_enable_clk(host, clk); } static void gl9750_hw_setting(struct sdhci_host *host) { u32 value; gl9750_wt_on(host); value = sdhci_readl(host, SDHCI_GLI_9750_CFG2); value &= ~SDHCI_GLI_9750_CFG2_L1DLY; /* set ASPM L1 entry delay to 7.9us */ value |= FIELD_PREP(SDHCI_GLI_9750_CFG2_L1DLY, GLI_9750_CFG2_L1DLY_VALUE); sdhci_writel(host, value, SDHCI_GLI_9750_CFG2); gl9750_wt_off(host); } static void gli_pcie_enable_msi(struct sdhci_pci_slot *slot) { int ret; ret = pci_alloc_irq_vectors(slot->chip->pdev, 1, 1, PCI_IRQ_MSI | PCI_IRQ_MSIX); if (ret < 0) { pr_warn("%s: enable PCI MSI failed, error=%d\n", mmc_hostname(slot->host->mmc), ret); return; } slot->host->irq = pci_irq_vector(slot->chip->pdev, 0); } static inline void gl9755_wt_on(struct pci_dev *pdev) { u32 wt_value; u32 wt_enable; pci_read_config_dword(pdev, PCI_GLI_9755_WT, &wt_value); wt_enable = FIELD_GET(PCI_GLI_9755_WT_EN, wt_value); if (wt_enable == GLI_9755_WT_EN_ON) return; wt_value &= ~PCI_GLI_9755_WT_EN; wt_value |= FIELD_PREP(PCI_GLI_9755_WT_EN, GLI_9755_WT_EN_ON); pci_write_config_dword(pdev, PCI_GLI_9755_WT, wt_value); } static inline void gl9755_wt_off(struct pci_dev *pdev) { u32 wt_value; u32 wt_enable; pci_read_config_dword(pdev, PCI_GLI_9755_WT, &wt_value); wt_enable = FIELD_GET(PCI_GLI_9755_WT_EN, wt_value); if (wt_enable == GLI_9755_WT_EN_OFF) return; wt_value &= ~PCI_GLI_9755_WT_EN; wt_value |= FIELD_PREP(PCI_GLI_9755_WT_EN, GLI_9755_WT_EN_OFF); pci_write_config_dword(pdev, PCI_GLI_9755_WT, wt_value); } static void gl9755_disable_ssc_pll(struct pci_dev *pdev) { u32 pll; gl9755_wt_on(pdev); pci_read_config_dword(pdev, PCI_GLI_9755_PLL, &pll); pll &= ~(PCI_GLI_9755_PLL_DIR | PCI_GLI_9755_PLLSSC_EN); pci_write_config_dword(pdev, PCI_GLI_9755_PLL, pll); gl9755_wt_off(pdev); } static void gl9755_set_pll(struct pci_dev *pdev, u8 dir, u16 ldiv, u8 pdiv) { u32 pll; gl9755_wt_on(pdev); pci_read_config_dword(pdev, PCI_GLI_9755_PLL, &pll); pll &= ~(PCI_GLI_9755_PLL_LDIV | PCI_GLI_9755_PLL_PDIV | PCI_GLI_9755_PLL_DIR); pll |= FIELD_PREP(PCI_GLI_9755_PLL_LDIV, ldiv) | FIELD_PREP(PCI_GLI_9755_PLL_PDIV, pdiv) | FIELD_PREP(PCI_GLI_9755_PLL_DIR, dir); pci_write_config_dword(pdev, PCI_GLI_9755_PLL, pll); gl9755_wt_off(pdev); /* wait for pll stable */ mdelay(1); } static bool gl9755_ssc_enable(struct pci_dev *pdev) { u32 misc; u8 off; gl9755_wt_on(pdev); pci_read_config_dword(pdev, PCI_GLI_9755_MISC, &misc); off = FIELD_GET(PCI_GLI_9755_MISC_SSC_OFF, misc); gl9755_wt_off(pdev); return !off; } static void gl9755_set_ssc(struct pci_dev *pdev, u8 enable, u8 step, u16 ppm) { u32 pll; u32 ssc; gl9755_wt_on(pdev); pci_read_config_dword(pdev, PCI_GLI_9755_PLL, &pll); pci_read_config_dword(pdev, PCI_GLI_9755_PLLSSC, &ssc); pll &= ~(PCI_GLI_9755_PLLSSC_STEP | PCI_GLI_9755_PLLSSC_EN); ssc &= ~PCI_GLI_9755_PLLSSC_PPM; pll |= FIELD_PREP(PCI_GLI_9755_PLLSSC_STEP, step) | FIELD_PREP(PCI_GLI_9755_PLLSSC_EN, enable); ssc |= FIELD_PREP(PCI_GLI_9755_PLLSSC_PPM, ppm); pci_write_config_dword(pdev, PCI_GLI_9755_PLLSSC, ssc); pci_write_config_dword(pdev, PCI_GLI_9755_PLL, pll); gl9755_wt_off(pdev); } static void gl9755_set_ssc_pll_205mhz(struct pci_dev *pdev) { bool enable = gl9755_ssc_enable(pdev); /* set pll to 205MHz and ssc */ gl9755_set_ssc(pdev, enable, 0xF, 0x5A1D); gl9755_set_pll(pdev, 0x1, 0x246, 0x0); } static void gl9755_set_ssc_pll_100mhz(struct pci_dev *pdev) { bool enable = gl9755_ssc_enable(pdev); /* set pll to 100MHz and ssc */ gl9755_set_ssc(pdev, enable, 0xE, 0x51EC); gl9755_set_pll(pdev, 0x1, 0x244, 0x1); } static void gl9755_set_ssc_pll_50mhz(struct pci_dev *pdev) { bool enable = gl9755_ssc_enable(pdev); /* set pll to 50MHz and ssc */ gl9755_set_ssc(pdev, enable, 0xE, 0x51EC); gl9755_set_pll(pdev, 0x1, 0x244, 0x3); } static void sdhci_gl9755_set_clock(struct sdhci_host *host, unsigned int clock) { struct sdhci_pci_slot *slot = sdhci_priv(host); struct mmc_ios *ios = &host->mmc->ios; struct pci_dev *pdev; u16 clk; pdev = slot->chip->pdev; host->mmc->actual_clock = 0; gl9755_disable_ssc_pll(pdev); sdhci_writew(host, 0, SDHCI_CLOCK_CONTROL); if (clock == 0) return; clk = sdhci_calc_clk(host, clock, &host->mmc->actual_clock); if (clock == 200000000 && ios->timing == MMC_TIMING_UHS_SDR104) { host->mmc->actual_clock = 205000000; gl9755_set_ssc_pll_205mhz(pdev); } else if (clock == 100000000) { gl9755_set_ssc_pll_100mhz(pdev); } else if (clock == 50000000) { gl9755_set_ssc_pll_50mhz(pdev); } sdhci_enable_clk(host, clk); } static void gl9755_hw_setting(struct sdhci_pci_slot *slot) { struct pci_dev *pdev = slot->chip->pdev; u32 value; gl9755_wt_on(pdev); pci_read_config_dword(pdev, PCI_GLI_9755_PECONF, &value); /* * Apple ARM64 platforms using these chips may have * inverted CD/WP detection. */ if (of_property_read_bool(pdev->dev.of_node, "cd-inverted")) value |= PCI_GLI_9755_INVERT_CD; if (of_property_read_bool(pdev->dev.of_node, "wp-inverted")) value |= PCI_GLI_9755_INVERT_WP; value &= ~PCI_GLI_9755_LFCLK; value &= ~PCI_GLI_9755_DMACLK; pci_write_config_dword(pdev, PCI_GLI_9755_PECONF, value); /* enable short circuit protection */ pci_read_config_dword(pdev, PCI_GLI_9755_SerDes, &value); value &= ~PCI_GLI_9755_SCP_DIS; pci_write_config_dword(pdev, PCI_GLI_9755_SerDes, value); pci_read_config_dword(pdev, PCI_GLI_9755_CFG2, &value); value &= ~PCI_GLI_9755_CFG2_L1DLY; /* set ASPM L1 entry delay to 7.9us */ value |= FIELD_PREP(PCI_GLI_9755_CFG2_L1DLY, GLI_9755_CFG2_L1DLY_VALUE); pci_write_config_dword(pdev, PCI_GLI_9755_CFG2, value); /* toggle PM state to allow GL9755 to enter ASPM L1.2 */ pci_read_config_dword(pdev, PCI_GLI_9755_PM_CTRL, &value); value |= PCI_GLI_9755_PM_STATE; pci_write_config_dword(pdev, PCI_GLI_9755_PM_CTRL, value); value &= ~PCI_GLI_9755_PM_STATE; pci_write_config_dword(pdev, PCI_GLI_9755_PM_CTRL, value); gl9755_wt_off(pdev); } static int gli_probe_slot_gl9750(struct sdhci_pci_slot *slot) { struct sdhci_host *host = slot->host; gl9750_hw_setting(host); gli_pcie_enable_msi(slot); slot->host->mmc->caps2 |= MMC_CAP2_NO_SDIO; sdhci_enable_v4_mode(host); return 0; } static int gli_probe_slot_gl9755(struct sdhci_pci_slot *slot) { struct sdhci_host *host = slot->host; gl9755_hw_setting(slot); gli_pcie_enable_msi(slot); slot->host->mmc->caps2 |= MMC_CAP2_NO_SDIO; sdhci_enable_v4_mode(host); return 0; } static void sdhci_gli_voltage_switch(struct sdhci_host *host) { /* * According to Section 3.6.1 signal voltage switch procedure in * SD Host Controller Simplified Spec. 4.20, steps 6~8 are as * follows: * (6) Set 1.8V Signal Enable in the Host Control 2 register. * (7) Wait 5ms. 1.8V voltage regulator shall be stable within this * period. * (8) If 1.8V Signal Enable is cleared by Host Controller, go to * step (12). * * Wait 5ms after set 1.8V signal enable in Host Control 2 register * to ensure 1.8V signal enable bit is set by GL9750/GL9755. * * ...however, the controller in the NUC10i3FNK4 (a 9755) requires * slightly longer than 5ms before the control register reports that * 1.8V is ready, and far longer still before the card will actually * work reliably. */ usleep_range(100000, 110000); } static void sdhci_gl9750_reset(struct sdhci_host *host, u8 mask) { sdhci_reset(host, mask); gli_set_9750(host); } static u32 sdhci_gl9750_readl(struct sdhci_host *host, int reg) { u32 value; value = readl(host->ioaddr + reg); if (unlikely(reg == SDHCI_MAX_CURRENT && !(value & 0xff))) value |= 0xc8; return value; } #ifdef CONFIG_PM_SLEEP static int sdhci_pci_gli_resume(struct sdhci_pci_chip *chip) { struct sdhci_pci_slot *slot = chip->slots[0]; pci_free_irq_vectors(slot->chip->pdev); gli_pcie_enable_msi(slot); return sdhci_pci_resume_host(chip); } static int sdhci_cqhci_gli_resume(struct sdhci_pci_chip *chip) { struct sdhci_pci_slot *slot = chip->slots[0]; int ret; ret = sdhci_pci_gli_resume(chip); if (ret) return ret; return cqhci_resume(slot->host->mmc); } static int sdhci_cqhci_gli_suspend(struct sdhci_pci_chip *chip) { struct sdhci_pci_slot *slot = chip->slots[0]; int ret; ret = cqhci_suspend(slot->host->mmc); if (ret) return ret; return sdhci_suspend_host(slot->host); } #endif static void gl9763e_hs400_enhanced_strobe(struct mmc_host *mmc, struct mmc_ios *ios) { struct sdhci_host *host = mmc_priv(mmc); u32 val; val = sdhci_readl(host, SDHCI_GLI_9763E_HS400_ES_REG); if (ios->enhanced_strobe) val |= SDHCI_GLI_9763E_HS400_ES_BIT; else val &= ~SDHCI_GLI_9763E_HS400_ES_BIT; sdhci_writel(host, val, SDHCI_GLI_9763E_HS400_ES_REG); } static void sdhci_set_gl9763e_signaling(struct sdhci_host *host, unsigned int timing) { u16 ctrl_2; ctrl_2 = sdhci_readw(host, SDHCI_HOST_CONTROL2); ctrl_2 &= ~SDHCI_CTRL_UHS_MASK; if (timing == MMC_TIMING_MMC_HS200) ctrl_2 |= SDHCI_CTRL_UHS_SDR104; else if (timing == MMC_TIMING_MMC_HS) ctrl_2 |= SDHCI_CTRL_UHS_SDR25; else if (timing == MMC_TIMING_MMC_DDR52) ctrl_2 |= SDHCI_CTRL_UHS_DDR50; else if (timing == MMC_TIMING_MMC_HS400) ctrl_2 |= SDHCI_GLI_9763E_CTRL_HS400; sdhci_writew(host, ctrl_2, SDHCI_HOST_CONTROL2); } static void sdhci_gl9763e_dumpregs(struct mmc_host *mmc) { sdhci_dumpregs(mmc_priv(mmc)); } static void sdhci_gl9763e_cqe_pre_enable(struct mmc_host *mmc) { struct cqhci_host *cq_host = mmc->cqe_private; u32 value; value = cqhci_readl(cq_host, CQHCI_CFG); value |= CQHCI_ENABLE; cqhci_writel(cq_host, value, CQHCI_CFG); } static void sdhci_gl9763e_cqe_enable(struct mmc_host *mmc) { struct sdhci_host *host = mmc_priv(mmc); sdhci_writew(host, GLI_9763E_CQE_TRNS_MODE, SDHCI_TRANSFER_MODE); sdhci_cqe_enable(mmc); } static u32 sdhci_gl9763e_cqhci_irq(struct sdhci_host *host, u32 intmask) { int cmd_error = 0; int data_error = 0; if (!sdhci_cqe_irq(host, intmask, &cmd_error, &data_error)) return intmask; cqhci_irq(host->mmc, intmask, cmd_error, data_error); return 0; } static void sdhci_gl9763e_cqe_post_disable(struct mmc_host *mmc) { struct sdhci_host *host = mmc_priv(mmc); struct cqhci_host *cq_host = mmc->cqe_private; u32 value; value = cqhci_readl(cq_host, CQHCI_CFG); value &= ~CQHCI_ENABLE; cqhci_writel(cq_host, value, CQHCI_CFG); sdhci_writew(host, 0x0, SDHCI_TRANSFER_MODE); } static const struct cqhci_host_ops sdhci_gl9763e_cqhci_ops = { .enable = sdhci_gl9763e_cqe_enable, .disable = sdhci_cqe_disable, .dumpregs = sdhci_gl9763e_dumpregs, .pre_enable = sdhci_gl9763e_cqe_pre_enable, .post_disable = sdhci_gl9763e_cqe_post_disable, }; static int gl9763e_add_host(struct sdhci_pci_slot *slot) { struct device *dev = &slot->chip->pdev->dev; struct sdhci_host *host = slot->host; struct cqhci_host *cq_host; bool dma64; int ret; ret = sdhci_setup_host(host); if (ret) return ret; cq_host = devm_kzalloc(dev, sizeof(*cq_host), GFP_KERNEL); if (!cq_host) { ret = -ENOMEM; goto cleanup; } cq_host->mmio = host->ioaddr + SDHCI_GLI_9763E_CQE_BASE_ADDR; cq_host->ops = &sdhci_gl9763e_cqhci_ops; dma64 = host->flags & SDHCI_USE_64_BIT_DMA; if (dma64) cq_host->caps |= CQHCI_TASK_DESC_SZ_128; ret = cqhci_init(cq_host, host->mmc, dma64); if (ret) goto cleanup; ret = __sdhci_add_host(host); if (ret) goto cleanup; return 0; cleanup: sdhci_cleanup_host(host); return ret; } static void sdhci_gl9763e_reset(struct sdhci_host *host, u8 mask) { if ((host->mmc->caps2 & MMC_CAP2_CQE) && (mask & SDHCI_RESET_ALL) && host->mmc->cqe_private) cqhci_deactivate(host->mmc); sdhci_reset(host, mask); } static void gli_set_gl9763e(struct sdhci_pci_slot *slot) { struct pci_dev *pdev = slot->chip->pdev; u32 value; pci_read_config_dword(pdev, PCIE_GLI_9763E_VHS, &value); value &= ~GLI_9763E_VHS_REV; value |= FIELD_PREP(GLI_9763E_VHS_REV, GLI_9763E_VHS_REV_W); pci_write_config_dword(pdev, PCIE_GLI_9763E_VHS, value); pci_read_config_dword(pdev, PCIE_GLI_9763E_SCR, &value); value |= GLI_9763E_SCR_AXI_REQ; pci_write_config_dword(pdev, PCIE_GLI_9763E_SCR, value); pci_read_config_dword(pdev, PCIE_GLI_9763E_MMC_CTRL, &value); value &= ~GLI_9763E_HS400_SLOW; pci_write_config_dword(pdev, PCIE_GLI_9763E_MMC_CTRL, value); pci_read_config_dword(pdev, PCIE_GLI_9763E_CFG2, &value); value &= ~GLI_9763E_CFG2_L1DLY; /* set ASPM L1 entry delay to 21us */ value |= FIELD_PREP(GLI_9763E_CFG2_L1DLY, GLI_9763E_CFG2_L1DLY_MID); pci_write_config_dword(pdev, PCIE_GLI_9763E_CFG2, value); pci_read_config_dword(pdev, PCIE_GLI_9763E_CLKRXDLY, &value); value &= ~GLI_9763E_HS400_RXDLY; value |= FIELD_PREP(GLI_9763E_HS400_RXDLY, GLI_9763E_HS400_RXDLY_5); pci_write_config_dword(pdev, PCIE_GLI_9763E_CLKRXDLY, value); pci_read_config_dword(pdev, PCIE_GLI_9763E_VHS, &value); value &= ~GLI_9763E_VHS_REV; value |= FIELD_PREP(GLI_9763E_VHS_REV, GLI_9763E_VHS_REV_R); pci_write_config_dword(pdev, PCIE_GLI_9763E_VHS, value); } #ifdef CONFIG_PM static void gl9763e_set_low_power_negotiation(struct sdhci_pci_slot *slot, bool enable) { struct pci_dev *pdev = slot->chip->pdev; u32 value; pci_read_config_dword(pdev, PCIE_GLI_9763E_VHS, &value); value &= ~GLI_9763E_VHS_REV; value |= FIELD_PREP(GLI_9763E_VHS_REV, GLI_9763E_VHS_REV_W); pci_write_config_dword(pdev, PCIE_GLI_9763E_VHS, value); pci_read_config_dword(pdev, PCIE_GLI_9763E_CFG, &value); if (enable) value &= ~GLI_9763E_CFG_LPSN_DIS; else value |= GLI_9763E_CFG_LPSN_DIS; pci_write_config_dword(pdev, PCIE_GLI_9763E_CFG, value); pci_read_config_dword(pdev, PCIE_GLI_9763E_VHS, &value); value &= ~GLI_9763E_VHS_REV; value |= FIELD_PREP(GLI_9763E_VHS_REV, GLI_9763E_VHS_REV_R); pci_write_config_dword(pdev, PCIE_GLI_9763E_VHS, value); } static int gl9763e_runtime_suspend(struct sdhci_pci_chip *chip) { struct sdhci_pci_slot *slot = chip->slots[0]; struct sdhci_host *host = slot->host; u16 clock; /* Enable LPM negotiation to allow entering L1 state */ gl9763e_set_low_power_negotiation(slot, true); clock = sdhci_readw(host, SDHCI_CLOCK_CONTROL); clock &= ~(SDHCI_CLOCK_PLL_EN | SDHCI_CLOCK_CARD_EN); sdhci_writew(host, clock, SDHCI_CLOCK_CONTROL); return 0; } static int gl9763e_runtime_resume(struct sdhci_pci_chip *chip) { struct sdhci_pci_slot *slot = chip->slots[0]; struct sdhci_host *host = slot->host; u16 clock; if (host->mmc->ios.power_mode != MMC_POWER_ON) return 0; clock = sdhci_readw(host, SDHCI_CLOCK_CONTROL); clock |= SDHCI_CLOCK_PLL_EN; clock &= ~SDHCI_CLOCK_INT_STABLE; sdhci_writew(host, clock, SDHCI_CLOCK_CONTROL); /* Wait max 150 ms */ if (read_poll_timeout(sdhci_readw, clock, (clock & SDHCI_CLOCK_INT_STABLE), 1000, 150000, false, host, SDHCI_CLOCK_CONTROL)) { pr_err("%s: PLL clock never stabilised.\n", mmc_hostname(host->mmc)); sdhci_dumpregs(host); } clock |= SDHCI_CLOCK_CARD_EN; sdhci_writew(host, clock, SDHCI_CLOCK_CONTROL); /* Disable LPM negotiation to avoid entering L1 state. */ gl9763e_set_low_power_negotiation(slot, false); return 0; } #endif static int gli_probe_slot_gl9763e(struct sdhci_pci_slot *slot) { struct pci_dev *pdev = slot->chip->pdev; struct sdhci_host *host = slot->host; u32 value; host->mmc->caps |= MMC_CAP_8_BIT_DATA | MMC_CAP_1_8V_DDR | MMC_CAP_NONREMOVABLE; host->mmc->caps2 |= MMC_CAP2_HS200_1_8V_SDR | MMC_CAP2_HS400_1_8V | MMC_CAP2_HS400_ES | MMC_CAP2_NO_SDIO | MMC_CAP2_NO_SD; pci_read_config_dword(pdev, PCIE_GLI_9763E_MB, &value); if (!(value & GLI_9763E_MB_CMDQ_OFF)) if (value & GLI_9763E_MB_ERP_ON) host->mmc->caps2 |= MMC_CAP2_CQE | MMC_CAP2_CQE_DCMD; gli_pcie_enable_msi(slot); host->mmc_host_ops.hs400_enhanced_strobe = gl9763e_hs400_enhanced_strobe; gli_set_gl9763e(slot); sdhci_enable_v4_mode(host); return 0; } #define REG_OFFSET_IN_BITS(reg) ((reg) << 3 & 0x18) static u16 sdhci_gli_readw(struct sdhci_host *host, int reg) { u32 val = readl(host->ioaddr + (reg & ~3)); u16 word; word = (val >> REG_OFFSET_IN_BITS(reg)) & 0xffff; return word; } static u8 sdhci_gli_readb(struct sdhci_host *host, int reg) { u32 val = readl(host->ioaddr + (reg & ~3)); u8 byte = (val >> REG_OFFSET_IN_BITS(reg)) & 0xff; return byte; } static const struct sdhci_ops sdhci_gl9755_ops = { .read_w = sdhci_gli_readw, .read_b = sdhci_gli_readb, .set_clock = sdhci_gl9755_set_clock, .enable_dma = sdhci_pci_enable_dma, .set_bus_width = sdhci_set_bus_width, .reset = sdhci_reset, .set_uhs_signaling = sdhci_set_uhs_signaling, .voltage_switch = sdhci_gli_voltage_switch, }; const struct sdhci_pci_fixes sdhci_gl9755 = { .quirks = SDHCI_QUIRK_NO_ENDATTR_IN_NOPDESC, .quirks2 = SDHCI_QUIRK2_BROKEN_DDR50, .probe_slot = gli_probe_slot_gl9755, .ops = &sdhci_gl9755_ops, #ifdef CONFIG_PM_SLEEP .resume = sdhci_pci_gli_resume, #endif }; static const struct sdhci_ops sdhci_gl9750_ops = { .read_w = sdhci_gli_readw, .read_b = sdhci_gli_readb, .read_l = sdhci_gl9750_readl, .set_clock = sdhci_gl9750_set_clock, .enable_dma = sdhci_pci_enable_dma, .set_bus_width = sdhci_set_bus_width, .reset = sdhci_gl9750_reset, .set_uhs_signaling = sdhci_set_uhs_signaling, .voltage_switch = sdhci_gli_voltage_switch, .platform_execute_tuning = gl9750_execute_tuning, }; const struct sdhci_pci_fixes sdhci_gl9750 = { .quirks = SDHCI_QUIRK_NO_ENDATTR_IN_NOPDESC, .quirks2 = SDHCI_QUIRK2_BROKEN_DDR50, .probe_slot = gli_probe_slot_gl9750, .ops = &sdhci_gl9750_ops, #ifdef CONFIG_PM_SLEEP .resume = sdhci_pci_gli_resume, #endif }; static const struct sdhci_ops sdhci_gl9763e_ops = { .set_clock = sdhci_set_clock, .enable_dma = sdhci_pci_enable_dma, .set_bus_width = sdhci_set_bus_width, .reset = sdhci_gl9763e_reset, .set_uhs_signaling = sdhci_set_gl9763e_signaling, .voltage_switch = sdhci_gli_voltage_switch, .irq = sdhci_gl9763e_cqhci_irq, }; const struct sdhci_pci_fixes sdhci_gl9763e = { .quirks = SDHCI_QUIRK_NO_ENDATTR_IN_NOPDESC, .probe_slot = gli_probe_slot_gl9763e, .ops = &sdhci_gl9763e_ops, #ifdef CONFIG_PM_SLEEP .resume = sdhci_cqhci_gli_resume, .suspend = sdhci_cqhci_gli_suspend, #endif #ifdef CONFIG_PM .runtime_suspend = gl9763e_runtime_suspend, .runtime_resume = gl9763e_runtime_resume, .allow_runtime_pm = true, #endif .add_host = gl9763e_add_host, };
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