| /* |
| * This file is part of the coreboot project. |
| * |
| * Copyright (C) 2014 Google Inc. |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License as published by |
| * the Free Software Foundation; version 2 of the License. |
| * |
| * This program is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| * GNU General Public License for more details. |
| */ |
| |
| #include <arch/acpi.h> |
| #include <arch/io.h> |
| #include <bootmode.h> |
| #include <console/console.h> |
| #include <delay.h> |
| #include <device/device.h> |
| #include <device/pci.h> |
| #include <device/pci_ids.h> |
| #include <stdlib.h> |
| #include <string.h> |
| #include <reg_script.h> |
| #include <drivers/intel/gma/i915_reg.h> |
| #include <soc/cpu.h> |
| #include <soc/pm.h> |
| #include <soc/ramstage.h> |
| #include <soc/systemagent.h> |
| #include <soc/intel/broadwell/chip.h> |
| #include <vboot/vbnv.h> |
| #include <soc/igd.h> |
| |
| #define GT_RETRY 1000 |
| #define GT_CDCLK_337 0 |
| #define GT_CDCLK_450 1 |
| #define GT_CDCLK_540 2 |
| #define GT_CDCLK_675 3 |
| |
| static u32 reg_em4; |
| static u32 reg_em5; |
| |
| u32 igd_get_reg_em4(void) { return reg_em4; } |
| u32 igd_get_reg_em5(void) { return reg_em5; } |
| |
| struct reg_script haswell_early_init_script[] = { |
| /* Enable Force Wake */ |
| REG_RES_WRITE32(PCI_BASE_ADDRESS_0, 0xa180, 0x00000020), |
| REG_RES_WRITE32(PCI_BASE_ADDRESS_0, 0xa188, 0x00010001), |
| REG_RES_POLL32(PCI_BASE_ADDRESS_0, FORCEWAKE_ACK_HSW, 1, 1, GT_RETRY), |
| |
| /* Enable Counters */ |
| REG_RES_OR32(PCI_BASE_ADDRESS_0, 0xa248, 0x00000016), |
| |
| /* GFXPAUSE settings */ |
| REG_RES_WRITE32(PCI_BASE_ADDRESS_0, 0xa000, 0x00070020), |
| |
| /* ECO Settings */ |
| REG_RES_RMW32(PCI_BASE_ADDRESS_0, 0xa180, 0xff3fffff, 0x15000000), |
| |
| /* Enable DOP Clock Gating */ |
| REG_RES_WRITE32(PCI_BASE_ADDRESS_0, 0x9424, 0x000003fd), |
| |
| /* Enable Unit Level Clock Gating */ |
| REG_RES_WRITE32(PCI_BASE_ADDRESS_0, 0x9400, 0x00000080), |
| REG_RES_WRITE32(PCI_BASE_ADDRESS_0, 0x9404, 0x40401000), |
| REG_RES_WRITE32(PCI_BASE_ADDRESS_0, 0x9408, 0x00000000), |
| REG_RES_WRITE32(PCI_BASE_ADDRESS_0, 0x940c, 0x02000001), |
| |
| /* |
| * RC6 Settings |
| */ |
| |
| /* Wake Rate Limits */ |
| REG_RES_OR32(PCI_BASE_ADDRESS_0, 0xa090, 0x00000000), |
| REG_RES_OR32(PCI_BASE_ADDRESS_0, 0xa098, 0x03e80000), |
| REG_RES_OR32(PCI_BASE_ADDRESS_0, 0xa09c, 0x00280000), |
| REG_RES_OR32(PCI_BASE_ADDRESS_0, 0xa0a8, 0x0001e848), |
| REG_RES_OR32(PCI_BASE_ADDRESS_0, 0xa0ac, 0x00000019), |
| |
| /* Render/Video/Blitter Idle Max Count */ |
| REG_RES_WRITE32(PCI_BASE_ADDRESS_0, 0x02054, 0x0000000a), |
| REG_RES_WRITE32(PCI_BASE_ADDRESS_0, 0x12054, 0x0000000a), |
| REG_RES_WRITE32(PCI_BASE_ADDRESS_0, 0x22054, 0x0000000a), |
| REG_RES_WRITE32(PCI_BASE_ADDRESS_0, 0x1a054, 0x0000000a), |
| |
| /* RC Sleep / RCx Thresholds */ |
| REG_RES_OR32(PCI_BASE_ADDRESS_0, 0xa0b0, 0x00000000), |
| REG_RES_OR32(PCI_BASE_ADDRESS_0, 0xa0b4, 0x000003e8), |
| REG_RES_OR32(PCI_BASE_ADDRESS_0, 0xa0b8, 0x0000c350), |
| |
| /* RP Settings */ |
| REG_RES_OR32(PCI_BASE_ADDRESS_0, 0xa010, 0x000f4240), |
| REG_RES_OR32(PCI_BASE_ADDRESS_0, 0xa014, 0x12060000), |
| REG_RES_OR32(PCI_BASE_ADDRESS_0, 0xa02c, 0x0000e808), |
| REG_RES_OR32(PCI_BASE_ADDRESS_0, 0xa030, 0x0003bd08), |
| REG_RES_OR32(PCI_BASE_ADDRESS_0, 0xa068, 0x000101d0), |
| REG_RES_OR32(PCI_BASE_ADDRESS_0, 0xa06c, 0x00055730), |
| REG_RES_OR32(PCI_BASE_ADDRESS_0, 0xa070, 0x0000000a), |
| |
| /* RP Control */ |
| REG_RES_WRITE32(PCI_BASE_ADDRESS_0, 0xa024, 0x00000b92), |
| |
| /* HW RC6 Control */ |
| REG_RES_WRITE32(PCI_BASE_ADDRESS_0, 0xa090, 0x88040000), |
| |
| /* Video Frequency Request */ |
| REG_RES_WRITE32(PCI_BASE_ADDRESS_0, 0xa00c, 0x08000000), |
| |
| /* Set RC6 VIDs */ |
| REG_RES_POLL32(PCI_BASE_ADDRESS_0, 0x138124, (1 << 31), 0, GT_RETRY), |
| REG_RES_WRITE32(PCI_BASE_ADDRESS_0, 0x138128, 0), |
| REG_RES_WRITE32(PCI_BASE_ADDRESS_0, 0x138124, 0x80000004), |
| REG_RES_POLL32(PCI_BASE_ADDRESS_0, 0x138124, (1 << 31), 0, GT_RETRY), |
| |
| /* Enable PM Interrupts */ |
| REG_RES_WRITE32(PCI_BASE_ADDRESS_0, 0x4402c, 0x03000076), |
| |
| /* Enable RC6 in idle */ |
| REG_RES_WRITE32(PCI_BASE_ADDRESS_0, 0xa094, 0x00040000), |
| |
| REG_SCRIPT_END |
| }; |
| |
| static const struct reg_script haswell_late_init_script[] = { |
| /* Lock settings */ |
| REG_RES_OR32(PCI_BASE_ADDRESS_0, 0x0a248, (1 << 31)), |
| REG_RES_OR32(PCI_BASE_ADDRESS_0, 0x0a004, (1 << 4)), |
| REG_RES_OR32(PCI_BASE_ADDRESS_0, 0x0a080, (1 << 2)), |
| REG_RES_OR32(PCI_BASE_ADDRESS_0, 0x0a180, (1 << 31)), |
| |
| /* Disable Force Wake */ |
| REG_RES_WRITE32(PCI_BASE_ADDRESS_0, 0xa188, 0x00010000), |
| REG_RES_POLL32(PCI_BASE_ADDRESS_0, FORCEWAKE_ACK_HSW, 1, 0, GT_RETRY), |
| REG_RES_WRITE32(PCI_BASE_ADDRESS_0, 0xa188, 0x00000001), |
| |
| /* Enable power well for DP and Audio */ |
| REG_RES_OR32(PCI_BASE_ADDRESS_0, 0x45400, (1 << 31)), |
| REG_RES_POLL32(PCI_BASE_ADDRESS_0, 0x45400, |
| (1 << 30), (1 << 30), GT_RETRY), |
| |
| REG_SCRIPT_END |
| }; |
| |
| static const struct reg_script broadwell_early_init_script[] = { |
| /* Enable Force Wake */ |
| REG_RES_WRITE32(PCI_BASE_ADDRESS_0, 0xa188, 0x00010001), |
| REG_RES_POLL32(PCI_BASE_ADDRESS_0, FORCEWAKE_ACK_HSW, 1, 1, GT_RETRY), |
| |
| /* Enable push bus metric control and shift */ |
| REG_RES_WRITE32(PCI_BASE_ADDRESS_0, 0xa248, 0x00000004), |
| REG_RES_WRITE32(PCI_BASE_ADDRESS_0, 0xa250, 0x000000ff), |
| REG_RES_WRITE32(PCI_BASE_ADDRESS_0, 0xa25c, 0x00000010), |
| |
| /* GFXPAUSE settings (set based on stepping) */ |
| |
| /* ECO Settings */ |
| REG_RES_WRITE32(PCI_BASE_ADDRESS_0, 0xa180, 0x45200000), |
| |
| /* Enable DOP Clock Gating */ |
| REG_RES_WRITE32(PCI_BASE_ADDRESS_0, 0x9424, 0x000000fd), |
| |
| /* Enable Unit Level Clock Gating */ |
| REG_RES_WRITE32(PCI_BASE_ADDRESS_0, 0x9400, 0x00000000), |
| REG_RES_WRITE32(PCI_BASE_ADDRESS_0, 0x9404, 0x40401000), |
| REG_RES_WRITE32(PCI_BASE_ADDRESS_0, 0x9408, 0x00000000), |
| REG_RES_WRITE32(PCI_BASE_ADDRESS_0, 0x940c, 0x02000001), |
| REG_RES_WRITE32(PCI_BASE_ADDRESS_0, 0x1a054, 0x0000000a), |
| |
| /* Video Frequency Request */ |
| REG_RES_WRITE32(PCI_BASE_ADDRESS_0, 0xa00c, 0x08000000), |
| |
| REG_RES_WRITE32(PCI_BASE_ADDRESS_0, 0x138158, 0x00000009), |
| REG_RES_WRITE32(PCI_BASE_ADDRESS_0, 0x13815c, 0x0000000d), |
| |
| /* |
| * RC6 Settings |
| */ |
| |
| /* Wake Rate Limits */ |
| REG_RES_RMW32(PCI_BASE_ADDRESS_0, 0x0a090, 0, 0), |
| REG_RES_OR32(PCI_BASE_ADDRESS_0, 0x0a098, 0x03e80000), |
| REG_RES_OR32(PCI_BASE_ADDRESS_0, 0x0a09c, 0x00280000), |
| REG_RES_OR32(PCI_BASE_ADDRESS_0, 0x0a0a8, 0x0001e848), |
| REG_RES_OR32(PCI_BASE_ADDRESS_0, 0x0a0ac, 0x00000019), |
| |
| /* Render/Video/Blitter Idle Max Count */ |
| REG_RES_WRITE32(PCI_BASE_ADDRESS_0, 0x02054, 0x0000000a), |
| REG_RES_WRITE32(PCI_BASE_ADDRESS_0, 0x12054, 0x0000000a), |
| REG_RES_WRITE32(PCI_BASE_ADDRESS_0, 0x22054, 0x0000000a), |
| |
| /* RC Sleep / RCx Thresholds */ |
| REG_RES_OR32(PCI_BASE_ADDRESS_0, 0x0a0b0, 0x00000000), |
| REG_RES_OR32(PCI_BASE_ADDRESS_0, 0x0a0b8, 0x00000271), |
| |
| /* RP Settings */ |
| REG_RES_OR32(PCI_BASE_ADDRESS_0, 0x0a010, 0x000f4240), |
| REG_RES_OR32(PCI_BASE_ADDRESS_0, 0x0a014, 0x12060000), |
| REG_RES_OR32(PCI_BASE_ADDRESS_0, 0x0a02c, 0x0000e808), |
| REG_RES_OR32(PCI_BASE_ADDRESS_0, 0x0a030, 0x0003bd08), |
| REG_RES_OR32(PCI_BASE_ADDRESS_0, 0x0a068, 0x000101d0), |
| REG_RES_OR32(PCI_BASE_ADDRESS_0, 0x0a06c, 0x00055730), |
| REG_RES_OR32(PCI_BASE_ADDRESS_0, 0x0a070, 0x0000000a), |
| REG_RES_OR32(PCI_BASE_ADDRESS_0, 0x0a168, 0x00000006), |
| |
| /* RP Control */ |
| REG_RES_WRITE32(PCI_BASE_ADDRESS_0, 0xa024, 0x00000b92), |
| |
| /* HW RC6 Control */ |
| REG_RES_WRITE32(PCI_BASE_ADDRESS_0, 0xa090, 0x90040000), |
| |
| /* Set RC6 VIDs */ |
| REG_RES_POLL32(PCI_BASE_ADDRESS_0, 0x138124, (1 << 31), 0, GT_RETRY), |
| REG_RES_WRITE32(PCI_BASE_ADDRESS_0, 0x138128, 0), |
| REG_RES_WRITE32(PCI_BASE_ADDRESS_0, 0x138124, 0x80000004), |
| REG_RES_POLL32(PCI_BASE_ADDRESS_0, 0x138124, (1 << 31), 0, GT_RETRY), |
| |
| /* Enable PM Interrupts */ |
| REG_RES_WRITE32(PCI_BASE_ADDRESS_0, 0x4402c, 0x03000076), |
| |
| /* Enable RC6 in idle */ |
| REG_RES_WRITE32(PCI_BASE_ADDRESS_0, 0xa094, 0x00040000), |
| |
| REG_SCRIPT_END |
| }; |
| |
| static const struct reg_script broadwell_late_init_script[] = { |
| /* Lock settings */ |
| REG_RES_OR32(PCI_BASE_ADDRESS_0, 0x0a248, (1 << 31)), |
| REG_RES_OR32(PCI_BASE_ADDRESS_0, 0x0a000, (1 << 18)), |
| REG_RES_OR32(PCI_BASE_ADDRESS_0, 0x0a180, (1 << 31)), |
| |
| /* Disable Force Wake */ |
| REG_RES_WRITE32(PCI_BASE_ADDRESS_0, 0xa188, 0x00010000), |
| REG_RES_POLL32(PCI_BASE_ADDRESS_0, FORCEWAKE_ACK_HSW, 1, 0, GT_RETRY), |
| |
| /* Enable power well for DP and Audio */ |
| REG_RES_OR32(PCI_BASE_ADDRESS_0, 0x45400, (1 << 31)), |
| REG_RES_POLL32(PCI_BASE_ADDRESS_0, 0x45400, |
| (1 << 30), (1 << 30), GT_RETRY), |
| |
| REG_SCRIPT_END |
| }; |
| |
| u32 map_oprom_vendev(u32 vendev) |
| { |
| return SA_IGD_OPROM_VENDEV; |
| } |
| |
| static struct resource *gtt_res = NULL; |
| |
| static unsigned long gtt_read(unsigned long reg) |
| { |
| u32 val; |
| val = read32(res2mmio(gtt_res, reg, 0)); |
| return val; |
| |
| } |
| |
| static void gtt_write(unsigned long reg, unsigned long data) |
| { |
| write32(res2mmio(gtt_res, reg, 0), data); |
| } |
| |
| static inline void gtt_rmw(u32 reg, u32 andmask, u32 ormask) |
| { |
| u32 val = gtt_read(reg); |
| val &= andmask; |
| val |= ormask; |
| gtt_write(reg, val); |
| } |
| |
| static int gtt_poll(u32 reg, u32 mask, u32 value) |
| { |
| unsigned try = GT_RETRY; |
| u32 data; |
| |
| while (try--) { |
| data = gtt_read(reg); |
| if ((data & mask) == value) |
| return 1; |
| udelay(10); |
| } |
| |
| printk(BIOS_ERR, "GT init timeout\n"); |
| return 0; |
| } |
| |
| static void igd_setup_panel(struct device *dev) |
| { |
| config_t *conf = dev->chip_info; |
| u32 reg32; |
| |
| /* Setup Digital Port Hotplug */ |
| reg32 = gtt_read(PCH_PORT_HOTPLUG); |
| if (!reg32) { |
| reg32 = (conf->gpu_dp_b_hotplug & 0x7) << 2; |
| reg32 |= (conf->gpu_dp_c_hotplug & 0x7) << 10; |
| reg32 |= (conf->gpu_dp_d_hotplug & 0x7) << 18; |
| gtt_write(PCH_PORT_HOTPLUG, reg32); |
| } |
| |
| /* Setup Panel Power On Delays */ |
| reg32 = gtt_read(PCH_PP_ON_DELAYS); |
| if (!reg32) { |
| reg32 = (conf->gpu_panel_port_select & 0x3) << 30; |
| reg32 |= (conf->gpu_panel_power_up_delay & 0x1fff) << 16; |
| reg32 |= (conf->gpu_panel_power_backlight_on_delay & 0x1fff); |
| gtt_write(PCH_PP_ON_DELAYS, reg32); |
| } |
| |
| /* Setup Panel Power Off Delays */ |
| reg32 = gtt_read(PCH_PP_OFF_DELAYS); |
| if (!reg32) { |
| reg32 = (conf->gpu_panel_power_down_delay & 0x1fff) << 16; |
| reg32 |= (conf->gpu_panel_power_backlight_off_delay & 0x1fff); |
| gtt_write(PCH_PP_OFF_DELAYS, reg32); |
| } |
| |
| /* Setup Panel Power Cycle Delay */ |
| if (conf->gpu_panel_power_cycle_delay) { |
| reg32 = gtt_read(PCH_PP_DIVISOR); |
| reg32 &= ~0xff; |
| reg32 |= conf->gpu_panel_power_cycle_delay & 0xff; |
| gtt_write(PCH_PP_DIVISOR, reg32); |
| } |
| |
| /* Enable Backlight if needed */ |
| if (conf->gpu_cpu_backlight) { |
| gtt_write(BLC_PWM_CPU_CTL2, BLC_PWM2_ENABLE); |
| gtt_write(BLC_PWM_CPU_CTL, conf->gpu_cpu_backlight); |
| } |
| if (conf->gpu_pch_backlight) { |
| gtt_write(BLC_PWM_PCH_CTL1, BLM_PCH_PWM_ENABLE); |
| gtt_write(BLC_PWM_PCH_CTL2, conf->gpu_pch_backlight); |
| } |
| } |
| |
| static void igd_cdclk_init_haswell(struct device *dev) |
| { |
| config_t *conf = dev->chip_info; |
| int cdclk = conf->cdclk; |
| int devid = pci_read_config16(dev, PCI_DEVICE_ID); |
| int gpu_is_ulx = 0; |
| u32 dpdiv, lpcll; |
| |
| /* Check for ULX GT1 or GT2 */ |
| if (devid == 0x0a0e || devid == 0x0a1e) |
| gpu_is_ulx = 1; |
| |
| /* 675MHz is not supported on haswell */ |
| if (cdclk == GT_CDCLK_675) |
| cdclk = GT_CDCLK_337; |
| |
| /* If CD clock is fixed or ULT then set to 450MHz */ |
| if ((gtt_read(0x42014) & 0x1000000) || cpu_is_ult()) |
| cdclk = GT_CDCLK_450; |
| |
| /* 540MHz is not supported on ULX */ |
| if (gpu_is_ulx && cdclk == GT_CDCLK_540) |
| cdclk = GT_CDCLK_337; |
| |
| /* 337.5MHz is not supported on non-ULT/ULX */ |
| if (!gpu_is_ulx && !cpu_is_ult() && cdclk == GT_CDCLK_337) |
| cdclk = GT_CDCLK_450; |
| |
| /* Set variables based on CD Clock setting */ |
| switch (cdclk) { |
| case GT_CDCLK_337: |
| dpdiv = 169; |
| lpcll = (1 << 26); |
| reg_em4 = 16; |
| reg_em5 = 225; |
| break; |
| case GT_CDCLK_450: |
| dpdiv = 225; |
| lpcll = 0; |
| reg_em4 = 4; |
| reg_em5 = 75; |
| break; |
| case GT_CDCLK_540: |
| dpdiv = 270; |
| lpcll = (1 << 26); |
| reg_em4 = 4; |
| reg_em5 = 90; |
| break; |
| default: |
| return; |
| } |
| |
| /* Set LPCLL_CTL CD Clock Frequency Select */ |
| gtt_rmw(0x130040, 0xf3ffffff, lpcll); |
| |
| /* ULX: Inform power controller of selected frequency */ |
| if (gpu_is_ulx) { |
| if (cdclk == GT_CDCLK_450) |
| gtt_write(0x138128, 0x00000000); /* 450MHz */ |
| else |
| gtt_write(0x138128, 0x00000001); /* 337.5MHz */ |
| gtt_write(0x13812c, 0x00000000); |
| gtt_write(0x138124, 0x80000017); |
| } |
| |
| /* Set CPU DP AUX 2X bit clock dividers */ |
| gtt_rmw(0x64010, 0xfffff800, dpdiv); |
| gtt_rmw(0x64810, 0xfffff800, dpdiv); |
| } |
| |
| static void igd_cdclk_init_broadwell(struct device *dev) |
| { |
| config_t *conf = dev->chip_info; |
| int cdclk = conf->cdclk; |
| u32 dpdiv, lpcll, pwctl, cdset; |
| |
| /* Inform power controller of upcoming frequency change */ |
| gtt_write(0x138128, 0); |
| gtt_write(0x13812c, 0); |
| gtt_write(0x138124, 0x80000018); |
| |
| /* Poll GT driver mailbox for run/busy clear */ |
| if (!gtt_poll(0x138124, (1 << 31), (0 << 31))) |
| cdclk = GT_CDCLK_450; |
| |
| if (gtt_read(0x42014) & 0x1000000) { |
| /* If CD clock is fixed then set to 450MHz */ |
| cdclk = GT_CDCLK_450; |
| } else { |
| /* Program CD clock to highest supported freq */ |
| if (cpu_is_ult()) |
| cdclk = GT_CDCLK_540; |
| else |
| cdclk = GT_CDCLK_675; |
| } |
| |
| /* CD clock frequency 675MHz not supported on ULT */ |
| if (cpu_is_ult() && cdclk == GT_CDCLK_675) |
| cdclk = GT_CDCLK_540; |
| |
| /* Set variables based on CD Clock setting */ |
| switch (cdclk) { |
| case GT_CDCLK_337: |
| cdset = 337; |
| lpcll = (1 << 27); |
| pwctl = 2; |
| dpdiv = 169; |
| reg_em4 = 16; |
| reg_em5 = 225; |
| break; |
| case GT_CDCLK_450: |
| cdset = 449; |
| lpcll = 0; |
| pwctl = 0; |
| dpdiv = 225; |
| reg_em4 = 4; |
| reg_em5 = 75; |
| break; |
| case GT_CDCLK_540: |
| cdset = 539; |
| lpcll = (1 << 26); |
| pwctl = 1; |
| dpdiv = 270; |
| reg_em4 = 4; |
| reg_em5 = 90; |
| break; |
| case GT_CDCLK_675: |
| cdset = 674; |
| lpcll = (1 << 26) | (1 << 27); |
| pwctl = 3; |
| dpdiv = 338; |
| reg_em4 = 8; |
| reg_em5 = 225; |
| default: |
| return; |
| } |
| |
| /* Set LPCLL_CTL CD Clock Frequency Select */ |
| gtt_rmw(0x130040, 0xf3ffffff, lpcll); |
| |
| /* Inform power controller of selected frequency */ |
| gtt_write(0x138128, pwctl); |
| gtt_write(0x13812c, 0); |
| gtt_write(0x138124, 0x80000017); |
| |
| /* Program CD Clock Frequency */ |
| gtt_rmw(0x46200, 0xfffffc00, cdset); |
| |
| /* Set CPU DP AUX 2X bit clock dividers */ |
| gtt_rmw(0x64010, 0xfffff800, dpdiv); |
| gtt_rmw(0x64810, 0xfffff800, dpdiv); |
| } |
| |
| static void igd_init(struct device *dev) |
| { |
| int is_broadwell = !!(cpu_family_model() == BROADWELL_FAMILY_ULT); |
| u32 rp1_gfx_freq; |
| |
| /* IGD needs to be Bus Master */ |
| u32 reg32 = pci_read_config32(dev, PCI_COMMAND); |
| reg32 |= PCI_COMMAND_MASTER | PCI_COMMAND_MEMORY | PCI_COMMAND_IO; |
| pci_write_config32(dev, PCI_COMMAND, reg32); |
| |
| gtt_res = find_resource(dev, PCI_BASE_ADDRESS_0); |
| if (!gtt_res || !gtt_res->base) |
| return; |
| |
| /* Wait for any configured pre-graphics delay */ |
| if (!acpi_is_wakeup_s3()) { |
| #if IS_ENABLED(CONFIG_CHROMEOS) |
| if (display_init_required() || vboot_wants_oprom()) |
| mdelay(CONFIG_PRE_GRAPHICS_DELAY); |
| #else |
| mdelay(CONFIG_PRE_GRAPHICS_DELAY); |
| #endif |
| } |
| |
| /* Early init steps */ |
| if (is_broadwell) { |
| reg_script_run_on_dev(dev, broadwell_early_init_script); |
| |
| /* Set GFXPAUSE based on stepping */ |
| if (cpu_stepping() <= (CPUID_BROADWELL_E0 & 0xf) && |
| systemagent_revision() <= 9) { |
| gtt_write(0xa000, 0x300ff); |
| } else { |
| gtt_write(0xa000, 0x30020); |
| } |
| } else { |
| reg_script_run_on_dev(dev, haswell_early_init_script); |
| } |
| |
| /* Set RP1 graphics frequency */ |
| rp1_gfx_freq = (MCHBAR32(0x5998) >> 8) & 0xff; |
| gtt_write(0xa008, rp1_gfx_freq << 24); |
| |
| /* Post VBIOS panel setup */ |
| igd_setup_panel(dev); |
| |
| /* Initialize PCI device, load/execute BIOS Option ROM */ |
| pci_dev_init(dev); |
| |
| /* Late init steps */ |
| if (is_broadwell) { |
| igd_cdclk_init_broadwell(dev); |
| reg_script_run_on_dev(dev, broadwell_late_init_script); |
| } else { |
| igd_cdclk_init_haswell(dev); |
| reg_script_run_on_dev(dev, haswell_late_init_script); |
| } |
| |
| if (gfx_get_init_done()) { |
| /* |
| * Work around VBIOS issue that is not clearing first 64 |
| * bytes of the framebuffer during VBE mode set. |
| */ |
| struct resource *fb = find_resource(dev, PCI_BASE_ADDRESS_2); |
| memset((void *)((u32)fb->base), 0, 64); |
| } |
| |
| if (!gfx_get_init_done() && !acpi_is_wakeup_s3()) { |
| /* |
| * Enable DDI-A if the Option ROM did not execute: |
| * |
| * bit 0: Display detected (RO) |
| * bit 4: DDI A supports 4 lanes and DDI E is not used |
| * bit 7: DDI buffer is idle |
| */ |
| gtt_write(DDI_BUF_CTL_A, DDI_BUF_IS_IDLE | DDI_A_4_LANES | |
| DDI_INIT_DISPLAY_DETECTED); |
| } |
| } |
| |
| static struct device_operations igd_ops = { |
| .read_resources = &pci_dev_read_resources, |
| .set_resources = &pci_dev_set_resources, |
| .enable_resources = &pci_dev_enable_resources, |
| .init = &igd_init, |
| .ops_pci = &broadwell_pci_ops, |
| }; |
| |
| static const unsigned short pci_device_ids[] = { |
| IGD_HASWELL_ULT_GT1, |
| IGD_HASWELL_ULT_GT2, |
| IGD_HASWELL_ULT_GT3, |
| IGD_BROADWELL_U_GT1, |
| IGD_BROADWELL_U_GT2, |
| IGD_BROADWELL_U_GT3_15W, |
| IGD_BROADWELL_U_GT3_28W, |
| IGD_BROADWELL_Y_GT2, |
| IGD_BROADWELL_H_GT2, |
| IGD_BROADWELL_H_GT3, |
| 0, |
| }; |
| |
| static const struct pci_driver igd_driver __pci_driver = { |
| .ops = &igd_ops, |
| .vendor = PCI_VENDOR_ID_INTEL, |
| .devices = pci_device_ids, |
| }; |