/* * This file is part of the coreboot project. * * Copyright (C) 2008-2009 coresystems GmbH * * 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 #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include "i945.h" #include "chip.h" #define GDRST 0xc0 #define MSAC 0x62 /* Multi Size Aperture Control */ #define LVDS_CLOCK_A_POWERUP_ALL (3 << 8) #define LVDS_CLOCK_B_POWERUP_ALL (3 << 4) #define LVDS_CLOCK_BOTH_POWERUP_ALL (3 << 2) #define DPLLB_LVDS_P2_CLOCK_DIV_7 (1 << 24) /* i915 */ #define DPLL_INTEGRATED_CRI_CLK_VLV (1 << 14) #define PGETBL_CTL 0x2020 #define PGETBL_ENABLED 0x00000001 #define BASE_FREQUENCY 100000 #define DEFAULT_BLC_PWM 180 uintptr_t gma_get_gnvs_aslb(const void *gnvs) { const global_nvs_t *gnvs_ptr = gnvs; return (uintptr_t)(gnvs_ptr ? gnvs_ptr->aslb : 0); } void gma_set_gnvs_aslb(void *gnvs, uintptr_t aslb) { global_nvs_t *gnvs_ptr = gnvs; if (gnvs_ptr) gnvs_ptr->aslb = aslb; } static int gtt_setup(u8 *mmiobase) { unsigned long PGETBL_save; unsigned long tom; // top of memory /* * The Video BIOS places the GTT right below top of memory. */ tom = pci_read_config8(dev_find_slot(0, PCI_DEVFN(0, 0)), TOLUD) << 24; PGETBL_save = tom - 256 * KiB; PGETBL_save |= PGETBL_ENABLED; PGETBL_save |= 2; /* set GTT to 256kb */ write32(mmiobase + GFX_FLSH_CNTL, 0); write32(mmiobase + PGETBL_CTL, PGETBL_save); /* verify */ if (read32(mmiobase + PGETBL_CTL) & PGETBL_ENABLED) { printk(BIOS_DEBUG, "gtt_setup is enabled.\n"); } else { printk(BIOS_DEBUG, "gtt_setup failed!!!\n"); return 1; } write32(mmiobase + GFX_FLSH_CNTL, 0); return 0; } static int intel_gma_init_lvds(struct northbridge_intel_i945_config *conf, unsigned int pphysbase, unsigned int piobase, u8 *mmiobase, unsigned int pgfx) { struct edid edid; struct edid_mode *mode; u8 edid_data[128]; unsigned long temp; int hpolarity, vpolarity; u32 smallest_err = 0xffffffff; u32 target_frequency; u32 pixel_p1 = 1; u32 pixel_p2; u32 pixel_n = 1; u32 pixel_m1 = 1; u32 pixel_m2 = 1; u32 hactive, vactive, right_border, bottom_border; u32 vsync, hsync, vblank, hblank, hfront_porch, vfront_porch; u32 i, j; u32 uma_size; u16 reg16; printk(BIOS_SPEW, "i915lightup: graphics %p mmio %p addrport %04x physbase %08x\n", (void *)pgfx, mmiobase, piobase, pphysbase); intel_gmbus_read_edid(mmiobase + GMBUS0, GMBUS_PORT_PANEL, 0x50, edid_data, sizeof(edid_data)); decode_edid(edid_data, sizeof(edid_data), &edid); mode = &edid.mode; hpolarity = (mode->phsync == '-'); vpolarity = (mode->pvsync == '-'); hactive = edid.x_resolution; vactive = edid.y_resolution; right_border = mode->hborder; bottom_border = mode->vborder; vblank = mode->vbl; hblank = mode->hbl; vsync = mode->vspw; hsync = mode->hspw; hfront_porch = mode->hso; vfront_porch = mode->vso; for (i = 0; i < 2; i++) for (j = 0; j < 0x100; j++) /* R = j, G = j, B = j. */ write32(mmiobase + PALETTE(i) + 4 * j, 0x10101 * j); write32(mmiobase + PCH_PP_CONTROL, PANEL_UNLOCK_REGS | (read32(mmiobase + PCH_PP_CONTROL) & ~PANEL_UNLOCK_MASK)); write32(mmiobase + MI_ARB_STATE, MI_ARB_C3_LP_WRITE_ENABLE | (1 << 27)); /* Clean registers. */ for (i = 0; i < 0x20; i += 4) write32(mmiobase + RENDER_RING_BASE + i, 0); for (i = 0; i < 0x20; i += 4) write32(mmiobase + FENCE_REG_965_0 + i, 0); /* Disable VGA. */ write32(mmiobase + VGACNTRL, VGA_DISP_DISABLE); /* Disable pipes. */ write32(mmiobase + PIPECONF(0), 0); write32(mmiobase + PIPECONF(1), 0); /* Init PRB0. */ write32(mmiobase + HWS_PGA, 0x352d2000); write32(mmiobase + PRB0_CTL, 0); write32(mmiobase + PRB0_HEAD, 0); write32(mmiobase + PRB0_TAIL, 0); write32(mmiobase + PRB0_START, 0); write32(mmiobase + PRB0_CTL, 0x0001f001); write32(mmiobase + D_STATE, DSTATE_PLL_D3_OFF | DSTATE_GFX_CLOCK_GATING | DSTATE_DOT_CLOCK_GATING); write32(mmiobase + ECOSKPD, 0x00010000); write32(mmiobase + HWSTAM, 0xeffe); write32(mmiobase + PORT_HOTPLUG_EN, conf->gpu_hotplug); write32(mmiobase + INSTPM, 0x08000000 | INSTPM_AGPBUSY_DIS); /* p2 divisor must 7 for dual channel LVDS */ /* and 14 for single channel LVDS */ pixel_p2 = mode->lvds_dual_channel ? 7 : 14; target_frequency = mode->pixel_clock; /* Find suitable divisors, m1, m2, p1, n. */ /* refclock * (5 * (m1 + 2) + (m1 + 2)) / (n + 2) / p1 / p2 */ /* should be closest to target frequency as possible */ u32 candn, candm1, candm2, candp1; for (candm1 = 8; candm1 <= 18; candm1++) { for (candm2 = 3; candm2 <= 7; candm2++) { for (candn = 1; candn <= 6; candn++) { for (candp1 = 1; candp1 <= 8; candp1++) { u32 m = 5 * (candm1 + 2) + (candm2 + 2); u32 p = candp1 * pixel_p2; u32 vco = DIV_ROUND_CLOSEST(BASE_FREQUENCY * m, candn + 2); u32 dot = DIV_ROUND_CLOSEST(vco, p); u32 this_err = MAX(dot, target_frequency) - MIN(dot, target_frequency); if ((m < 70) || (m > 120)) continue; if (this_err < smallest_err) { smallest_err = this_err; pixel_n = candn; pixel_m1 = candm1; pixel_m2 = candm2; pixel_p1 = candp1; } } } } } if (smallest_err == 0xffffffff) { printk(BIOS_ERR, "Couldn't find GFX clock divisors\n"); return -1; } printk(BIOS_INFO, "bringing up panel at resolution %d x %d\n", hactive, vactive); printk(BIOS_DEBUG, "Borders %d x %d\n", right_border, bottom_border); printk(BIOS_DEBUG, "Blank %d x %d\n", hblank, vblank); printk(BIOS_DEBUG, "Sync %d x %d\n", hsync, vsync); printk(BIOS_DEBUG, "Front porch %d x %d\n", hfront_porch, vfront_porch); printk(BIOS_DEBUG, (conf->gpu_lvds_use_spread_spectrum_clock ? "Spread spectrum clock\n" : "DREF clock\n")); printk(BIOS_DEBUG, (mode->lvds_dual_channel ? "Dual channel\n" : "Single channel\n")); printk(BIOS_DEBUG, "Polarities %d, %d\n", hpolarity, vpolarity); printk(BIOS_DEBUG, "Pixel N=%d, M1=%d, M2=%d, P1=%d\n", pixel_n, pixel_m1, pixel_m2, pixel_p1); printk(BIOS_DEBUG, "Pixel clock %d kHz\n", BASE_FREQUENCY * (5 * (pixel_m1 + 2) + (pixel_m2 + 2)) / (pixel_n + 2) / (pixel_p1 * pixel_p2)); printk(BIOS_INFO, "VGA mode: %s\n", IS_ENABLED(CONFIG_LINEAR_FRAMEBUFFER) ? "Linear framebuffer" : "text"); if (IS_ENABLED(CONFIG_LINEAR_FRAMEBUFFER)) { /* Disable panel fitter (we're in native resolution). */ write32(mmiobase + PF_CTL(0), 0); write32(mmiobase + PF_WIN_SZ(0), 0); write32(mmiobase + PF_WIN_POS(0), 0); write32(mmiobase + PFIT_PGM_RATIOS, 0); write32(mmiobase + PFIT_CONTROL, 0); } else { write32(mmiobase + PF_WIN_SZ(0), vactive | (hactive << 16)); write32(mmiobase + PF_WIN_POS(0), 0); write32(mmiobase + PF_CTL(0), PF_ENABLE | PF_FILTER_MED_3x3); write32(mmiobase + PFIT_CONTROL, PFIT_ENABLE | (1 << PFIT_PIPE_SHIFT) | HORIZ_AUTO_SCALE | VERT_AUTO_SCALE); } mdelay(1); write32(mmiobase + DSPCNTR(0), DISPPLANE_BGRX888 | DISPPLANE_SEL_PIPE_B | DISPPLANE_GAMMA_ENABLE); mdelay(1); write32(mmiobase + PP_CONTROL, PANEL_UNLOCK_REGS | (read32(mmiobase + PP_CONTROL) & ~PANEL_UNLOCK_MASK)); write32(mmiobase + FP0(1), (pixel_n << 16) | (pixel_m1 << 8) | pixel_m2); write32(mmiobase + DPLL(1), DPLL_VGA_MODE_DIS | DPLL_VCO_ENABLE | DPLLB_MODE_LVDS | (mode->lvds_dual_channel ? DPLLB_LVDS_P2_CLOCK_DIV_7 : DPLLB_LVDS_P2_CLOCK_DIV_14) | (conf->gpu_lvds_use_spread_spectrum_clock ? DPLL_INTEGRATED_CLOCK_VLV | DPLL_INTEGRATED_CRI_CLK_VLV : 0) | (0x10000 << (pixel_p1 - 1))); mdelay(1); write32(mmiobase + DPLL(1), DPLL_VGA_MODE_DIS | DPLL_VCO_ENABLE | DPLLB_MODE_LVDS | (mode->lvds_dual_channel ? DPLLB_LVDS_P2_CLOCK_DIV_7 : DPLLB_LVDS_P2_CLOCK_DIV_14) | ((conf->gpu_lvds_use_spread_spectrum_clock ? 3 : 0) << 13) | (0x10000 << (pixel_p1 - 1))); mdelay(1); write32(mmiobase + HTOTAL(1), ((hactive + right_border + hblank - 1) << 16) | (hactive - 1)); write32(mmiobase + HBLANK(1), ((hactive + right_border + hblank - 1) << 16) | (hactive + right_border - 1)); write32(mmiobase + HSYNC(1), ((hactive + right_border + hfront_porch + hsync - 1) << 16) | (hactive + right_border + hfront_porch - 1)); write32(mmiobase + VTOTAL(1), ((vactive + bottom_border + vblank - 1) << 16) | (vactive - 1)); write32(mmiobase + VBLANK(1), ((vactive + bottom_border + vblank - 1) << 16) | (vactive + bottom_border - 1)); write32(mmiobase + VSYNC(1), ((vactive + bottom_border + vfront_porch + vsync - 1) << 16) | (vactive + bottom_border + vfront_porch - 1)); if (IS_ENABLED(CONFIG_LINEAR_FRAMEBUFFER)) { write32(mmiobase + PIPESRC(1), ((hactive - 1) << 16) | (vactive - 1)); } else { write32(mmiobase + PIPESRC(1), (639 << 16) | 399); } mdelay(1); write32(mmiobase + DSPSIZE(0), (hactive - 1) | ((vactive - 1) << 16)); write32(mmiobase + DSPPOS(0), 0); edid.bytes_per_line = (edid.bytes_per_line + 63) & ~63; write32(mmiobase + DSPADDR(0), 0); write32(mmiobase + DSPSURF(0), 0); write32(mmiobase + DSPSTRIDE(0), edid.bytes_per_line); write32(mmiobase + DSPCNTR(0), DISPLAY_PLANE_ENABLE | DISPPLANE_BGRX888 | DISPPLANE_SEL_PIPE_B | DISPPLANE_GAMMA_ENABLE); mdelay(1); write32(mmiobase + PIPECONF(1), PIPECONF_ENABLE); write32(mmiobase + LVDS, LVDS_ON | (hpolarity << 20) | (vpolarity << 21) | (mode->lvds_dual_channel ? LVDS_CLOCK_B_POWERUP_ALL | LVDS_CLOCK_BOTH_POWERUP_ALL : 0) | LVDS_CLOCK_A_POWERUP_ALL | LVDS_PIPE(1)); write32(mmiobase + PP_CONTROL, PANEL_UNLOCK_REGS | PANEL_POWER_OFF); write32(mmiobase + PP_CONTROL, PANEL_UNLOCK_REGS | PANEL_POWER_RESET); mdelay(1); write32(mmiobase + PP_CONTROL, PANEL_UNLOCK_REGS | PANEL_POWER_ON | PANEL_POWER_RESET); printk(BIOS_DEBUG, "waiting for panel powerup\n"); while (1) { u32 reg32; reg32 = read32(mmiobase + PP_STATUS); if ((reg32 & PP_SEQUENCE_MASK) == PP_SEQUENCE_NONE) break; } printk(BIOS_DEBUG, "panel powered up\n"); write32(mmiobase + PP_CONTROL, PANEL_POWER_ON | PANEL_POWER_RESET); /* Clear interrupts. */ write32(mmiobase + DEIIR, 0xffffffff); write32(mmiobase + SDEIIR, 0xffffffff); write32(mmiobase + IIR, 0xffffffff); write32(mmiobase + IMR, 0xffffffff); write32(mmiobase + EIR, 0xffffffff); if (gtt_setup(mmiobase)) { printk(BIOS_ERR, "ERROR: GTT Setup Failed!!!\n"); return 0; } /* Setup GTT. */ reg16 = pci_read_config16(dev_find_slot(0, PCI_DEVFN(0, 0)), GGC); uma_size = 0; if (!(reg16 & 2)) { uma_size = decode_igd_memory_size((reg16 >> 4) & 7); printk(BIOS_DEBUG, "%dM UMA\n", uma_size >> 10); } for (i = 0; i < (uma_size - 256) / 4; i++) { outl((i << 2) | 1, piobase); outl(pphysbase + (i << 12) + 1, piobase + 4); } temp = read32(mmiobase + PGETBL_CTL); printk(BIOS_INFO, "GTT PGETBL_CTL register: 0x%lx\n", temp); if (temp & 1) printk(BIOS_INFO, "GTT Enabled\n"); else printk(BIOS_ERR, "ERROR: GTT is still Disabled!!!\n"); if (IS_ENABLED(CONFIG_LINEAR_FRAMEBUFFER)) { printk(BIOS_SPEW, "memset %p to 0x00 for %d bytes\n", (void *)pgfx, hactive * vactive * 4); memset((void *)pgfx, 0x00, hactive * vactive * 4); set_vbe_mode_info_valid(&edid, pgfx); } else { vga_misc_write(0x67); write32(mmiobase + DSPCNTR(0), DISPPLANE_SEL_PIPE_B); write32(mmiobase + VGACNTRL, 0x02c4008e | VGA_PIPE_B_SELECT); vga_textmode_init(); } return 0; } static int intel_gma_init_vga(struct northbridge_intel_i945_config *conf, unsigned int pphysbase, unsigned int piobase, u8 *mmiobase, unsigned int pgfx) { int i; u32 hactive, vactive; u16 reg16; u32 uma_size; printk(BIOS_SPEW, "mmiobase %x addrport %x physbase %x\n", (u32)mmiobase, piobase, pphysbase); gtt_setup(mmiobase); /* Disable VGA. */ write32(mmiobase + VGACNTRL, VGA_DISP_DISABLE); /* Disable pipes. */ write32(mmiobase + PIPECONF(0), 0); write32(mmiobase + PIPECONF(1), 0); write32(mmiobase + INSTPM, 0x800); vga_gr_write(0x18, 0); write32(mmiobase + VGA0, 0x200074); write32(mmiobase + VGA1, 0x200074); write32(mmiobase + DSPFW3, 0x7f3f00c1 & ~PINEVIEW_SELF_REFRESH_EN); write32(mmiobase + DSPCLK_GATE_D, 0); write32(mmiobase + FW_BLC, 0x03060106); write32(mmiobase + FW_BLC2, 0x00000306); write32(mmiobase + ADPA, ADPA_DAC_ENABLE | ADPA_PIPE_A_SELECT | ADPA_USE_VGA_HVPOLARITY | ADPA_VSYNC_CNTL_ENABLE | ADPA_HSYNC_CNTL_ENABLE | ADPA_DPMS_ON ); write32(mmiobase + 0x7041c, 0x0); write32(mmiobase + DPLL_MD(0), 0x3); write32(mmiobase + DPLL_MD(1), 0x3); write32(mmiobase + DSPCNTR(1), 0x1000000); write32(mmiobase + PIPESRC(1), 0x027f01df); vga_misc_write(0x67); const u8 cr[] = { 0x5f, 0x4f, 0x50, 0x82, 0x55, 0x81, 0xbf, 0x1f, 0x00, 0x4f, 0x0d, 0x0e, 0x00, 0x00, 0x00, 0x00, 0x9c, 0x8e, 0x8f, 0x28, 0x1f, 0x96, 0xb9, 0xa3, 0xff }; vga_cr_write(0x11, 0); for (i = 0; i <= 0x18; i++) vga_cr_write(i, cr[i]); // Disable screen memory to prevent garbage from appearing. vga_sr_write(1, vga_sr_read(1) | 0x20); hactive = 640; vactive = 400; mdelay(1); write32(mmiobase + DPLL(0), DPLL_VCO_ENABLE | DPLLB_MODE_DAC_SERIAL | DPLL_VGA_MODE_DIS | DPLL_DAC_SERIAL_P2_CLOCK_DIV_10 | 0x400601 ); mdelay(1); write32(mmiobase + DPLL(0), DPLL_VCO_ENABLE | DPLLB_MODE_DAC_SERIAL | DPLL_VGA_MODE_DIS | DPLL_DAC_SERIAL_P2_CLOCK_DIV_10 | 0x400601 ); write32(mmiobase + ADPA, ADPA_DAC_ENABLE | ADPA_PIPE_A_SELECT | ADPA_USE_VGA_HVPOLARITY | ADPA_VSYNC_CNTL_ENABLE | ADPA_HSYNC_CNTL_ENABLE | ADPA_DPMS_ON ); write32(mmiobase + HTOTAL(0), ((hactive - 1) << 16) | (hactive - 1)); write32(mmiobase + HBLANK(0), ((hactive - 1) << 16) | (hactive - 1)); write32(mmiobase + HSYNC(0), ((hactive - 1) << 16) | (hactive - 1)); write32(mmiobase + VTOTAL(0), ((vactive - 1) << 16) | (vactive - 1)); write32(mmiobase + VBLANK(0), ((vactive - 1) << 16) | (vactive - 1)); write32(mmiobase + VSYNC(0), ((vactive - 1) << 16) | (vactive - 1)); write32(mmiobase + PF_WIN_POS(0), 0); write32(mmiobase + PIPESRC(0), (639 << 16) | 399); write32(mmiobase + PF_CTL(0), PF_ENABLE | PF_FILTER_MED_3x3); write32(mmiobase + PF_WIN_SZ(0), vactive | (hactive << 16)); write32(mmiobase + PFIT_CONTROL, 0x0); mdelay(1); write32(mmiobase + FDI_RX_CTL(0), 0x00002040); mdelay(1); write32(mmiobase + FDI_RX_CTL(0), 0x80002050); write32(mmiobase + FDI_TX_CTL(0), 0x00044000); mdelay(1); write32(mmiobase + FDI_TX_CTL(0), 0x80044000); write32(mmiobase + PIPECONF(0), PIPECONF_ENABLE | PIPECONF_BPP_6 | PIPECONF_DITHER_EN); write32(mmiobase + VGACNTRL, 0x0); write32(mmiobase + DSPCNTR(0), DISPLAY_PLANE_ENABLE | DISPPLANE_BGRX888); mdelay(1); write32(mmiobase + ADPA, ADPA_DAC_ENABLE | ADPA_PIPE_A_SELECT | ADPA_USE_VGA_HVPOLARITY | ADPA_VSYNC_CNTL_ENABLE | ADPA_HSYNC_CNTL_ENABLE | ADPA_DPMS_ON ); write32(mmiobase + DSPFW3, 0x7f3f00c1); write32(mmiobase + MI_MODE, 0x200 | VS_TIMER_DISPATCH); write32(mmiobase + CACHE_MODE_0, (0x6820 | (1 << 9)) & ~(1 << 5)); write32(mmiobase + CACHE_MODE_1, 0x380 & ~(1 << 9)); /* Set up GTT. */ reg16 = pci_read_config16(dev_find_slot(0, PCI_DEVFN(0, 0)), GGC); uma_size = 0; if (!(reg16 & 2)) { uma_size = decode_igd_memory_size((reg16 >> 4) & 7); printk(BIOS_DEBUG, "%dM UMA\n", uma_size >> 10); } for (i = 0; i < (uma_size - 256) / 4; i++) { outl((i << 2) | 1, piobase); outl(pphysbase + (i << 12) + 1, piobase + 4); } /* Clear interrupts. */ write32(mmiobase + DEIIR, 0xffffffff); write32(mmiobase + SDEIIR, 0xffffffff); write32(mmiobase + IIR, 0xffffffff); write32(mmiobase + IMR, 0xffffffff); write32(mmiobase + EIR, 0xffffffff); vga_textmode_init(); /* Enable screen memory. */ vga_sr_write(1, vga_sr_read(1) & ~0x20); return 0; } /* compare the header of the vga edid header */ /* if vga is not connected it should have a correct header */ static int probe_edid(u8 *mmiobase, u8 slave) { int i; u8 vga_edid[128]; u8 header[8] = {0x00, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x00}; intel_gmbus_read_edid(mmiobase + GMBUS0, slave, 0x50, vga_edid, 128); intel_gmbus_stop(mmiobase + GMBUS0); for (i = 0; i < 8; i++) { if (vga_edid[i] != header[i]) { printk(BIOS_DEBUG, "No display connected on slave %d\n", slave); return 0; } } printk(BIOS_SPEW, "Found a display on slave %d\n", slave); return 1; } static u32 get_cdclk(struct device *const dev) { u16 gcfgc = pci_read_config16(dev, GCFGC); if (gcfgc & GC_LOW_FREQUENCY_ENABLE) return 133333333; switch (gcfgc & GC_DISPLAY_CLOCK_MASK) { case GC_DISPLAY_CLOCK_333_320_MHZ: return 320000000; default: case GC_DISPLAY_CLOCK_190_200_MHZ: return 200000000; } } static u32 freq_to_blc_pwm_ctl(struct device *const dev, u16 pwm_freq) { u32 blc_mod; /* Set duty cycle to 100% due to use of legacy backlight control */ blc_mod = get_cdclk(dev) / (32 * pwm_freq); return BLM_LEGACY_MODE | ((blc_mod / 2) << 17) | ((blc_mod / 2) << 1); } static void panel_setup(u8 *mmiobase, struct device *const dev) { const struct northbridge_intel_i945_config *const conf = dev->chip_info; u32 reg32; /* Set up Panel Power On Delays */ reg32 = (conf->gpu_panel_power_up_delay & 0x1fff) << 16; reg32 |= (conf->gpu_panel_power_backlight_on_delay & 0x1fff); write32(mmiobase + PP_ON_DELAYS, reg32); /* Set up Panel Power Off Delays */ reg32 = (conf->gpu_panel_power_down_delay & 0x1fff) << 16; reg32 |= (conf->gpu_panel_power_backlight_off_delay & 0x1fff); write32(mmiobase + PP_OFF_DELAYS, reg32); /* Set up Panel Power Cycle Delay */ reg32 = (get_cdclk(dev) / 20000 - 1) << PP_REFERENCE_DIVIDER_SHIFT; reg32 |= conf->gpu_panel_power_cycle_delay & 0x1f; write32(mmiobase + PP_DIVISOR, reg32); /* Backlight init. */ if (conf->pwm_freq) write32(mmiobase + BLC_PWM_CTL, freq_to_blc_pwm_ctl(dev, conf->pwm_freq)); else write32(mmiobase + BLC_PWM_CTL, freq_to_blc_pwm_ctl(dev, DEFAULT_BLC_PWM)); } static void gma_ngi(struct device *const dev) { /* This should probably run before post VBIOS init. */ printk(BIOS_INFO, "Initializing VGA without OPROM.\n"); void *mmiobase; u32 iobase, graphics_base; struct northbridge_intel_i945_config *conf = dev->chip_info; iobase = dev->resource_list[1].base; mmiobase = (void *)(uintptr_t)dev->resource_list[0].base; graphics_base = dev->resource_list[2].base; printk(BIOS_SPEW, "GMADR = 0x%08x GTTADR = 0x%08x\n", pci_read_config32(dev, GMADR), pci_read_config32(dev, GTTADR)); int err; if (IS_ENABLED(CONFIG_NORTHBRIDGE_INTEL_SUBTYPE_I945GM)) panel_setup(mmiobase, dev); /* probe if VGA is connected and always run */ /* VGA init if no LVDS is connected */ if (!probe_edid(mmiobase, GMBUS_PORT_PANEL) || probe_edid(mmiobase, GMBUS_PORT_VGADDC)) err = intel_gma_init_vga(conf, pci_read_config32(dev, 0x5c) & ~0xf, iobase, mmiobase, graphics_base); else err = intel_gma_init_lvds(conf, pci_read_config32(dev, 0x5c) & ~0xf, iobase, mmiobase, graphics_base); if (err == 0) gfx_set_init_done(1); /* Linux relies on VBT for panel info. */ if (CONFIG_NORTHBRIDGE_INTEL_SUBTYPE_I945GM) { generate_fake_intel_oprom(&conf->gfx, dev, "$VBT CALISTOGA"); } if (CONFIG_NORTHBRIDGE_INTEL_SUBTYPE_I945GC) { generate_fake_intel_oprom(&conf->gfx, dev, "$VBT LAKEPORT-G"); } } static void gma_func0_init(struct device *dev) { u32 reg32; /* Unconditionally reset graphics */ pci_write_config8(dev, GDRST, 1); udelay(50); pci_write_config8(dev, GDRST, 0); /* wait for device to finish */ while (pci_read_config8(dev, GDRST) & 1) ; /* IGD needs to be Bus Master */ reg32 = pci_read_config32(dev, PCI_COMMAND); pci_write_config32(dev, PCI_COMMAND, reg32 | PCI_COMMAND_MASTER | PCI_COMMAND_IO | PCI_COMMAND_MEMORY); int vga_disable = (pci_read_config16(dev, GGC) & 2) >> 1; if (IS_ENABLED(CONFIG_MAINBOARD_DO_NATIVE_VGA_INIT)) { if (acpi_is_wakeup_s3()) { printk(BIOS_INFO, "Skipping native VGA initialization when resuming from ACPI S3.\n"); } else { if (vga_disable) { printk(BIOS_INFO, "IGD is not decoding legacy VGA MEM and IO: skipping NATIVE graphic init\n"); } else { gma_ngi(dev); } } } else { /* PCI Init, will run VBIOS */ pci_dev_init(dev); } intel_gma_restore_opregion(); } /* This doesn't reclaim stolen UMA memory, but IGD could still be re-enabled later. */ static void gma_func0_disable(struct device *dev) { struct device *dev_host = dev_find_slot(0, PCI_DEVFN(0x0, 0)); pci_write_config16(dev, GCFC, 0xa00); pci_write_config16(dev_host, GGC, (1 << 1)); unsigned int reg32 = pci_read_config32(dev_host, DEVEN); reg32 &= ~(DEVEN_D2F0 | DEVEN_D2F1); pci_write_config32(dev_host, DEVEN, reg32); dev->enabled = 0; } static void gma_func1_init(struct device *dev) { u32 reg32; u8 val; /* IGD needs to be Bus Master, also enable IO access */ reg32 = pci_read_config32(dev, PCI_COMMAND); pci_write_config32(dev, PCI_COMMAND, reg32 | PCI_COMMAND_MASTER | PCI_COMMAND_MEMORY | PCI_COMMAND_IO); if (get_option(&val, "tft_brightness") == CB_SUCCESS) pci_write_config8(dev, 0xf4, val); else pci_write_config8(dev, 0xf4, 0xff); } static void gma_set_subsystem(struct device *dev, unsigned int vendor, unsigned int device) { if (!vendor || !device) { pci_write_config32(dev, PCI_SUBSYSTEM_VENDOR_ID, pci_read_config32(dev, PCI_VENDOR_ID)); } else { pci_write_config32(dev, PCI_SUBSYSTEM_VENDOR_ID, ((device & 0xffff) << 16) | (vendor & 0xffff)); } } const struct i915_gpu_controller_info * intel_gma_get_controller_info(void) { struct device *dev = dev_find_slot(0, PCI_DEVFN(0x2, 0)); if (!dev) return NULL; struct northbridge_intel_i945_config *chip = dev->chip_info; if (!chip) return NULL; return &chip->gfx; } static void gma_ssdt(struct device *device) { const struct i915_gpu_controller_info *gfx = intel_gma_get_controller_info(); if (!gfx) return; drivers_intel_gma_displays_ssdt_generate(gfx); } static void gma_func0_read_resources(struct device *dev) { u8 reg8; /* Set Untrusted Aperture Size to 256mb */ reg8 = pci_read_config8(dev, MSAC); reg8 &= ~0x3; reg8 |= 0x2; pci_write_config8(dev, MSAC, reg8); pci_dev_read_resources(dev); } static unsigned long gma_write_acpi_tables(struct device *const dev, unsigned long current, struct acpi_rsdp *const rsdp) { igd_opregion_t *opregion = (igd_opregion_t *)current; global_nvs_t *gnvs; if (intel_gma_init_igd_opregion(opregion) != CB_SUCCESS) return current; current += sizeof(igd_opregion_t); /* GNVS has been already set up */ gnvs = cbmem_find(CBMEM_ID_ACPI_GNVS); if (gnvs) { /* IGD OpRegion Base Address */ gma_set_gnvs_aslb(gnvs, (uintptr_t)opregion); } else { printk(BIOS_ERR, "Error: GNVS table not found.\n"); } current = acpi_align_current(current); return current; } static const char *gma_acpi_name(const struct device *dev) { return "GFX0"; } static struct pci_operations gma_pci_ops = { .set_subsystem = gma_set_subsystem, }; static struct device_operations gma_func0_ops = { .read_resources = gma_func0_read_resources, .set_resources = pci_dev_set_resources, .enable_resources = pci_dev_enable_resources, .init = gma_func0_init, .acpi_fill_ssdt_generator = gma_ssdt, .scan_bus = 0, .enable = 0, .disable = gma_func0_disable, .ops_pci = &gma_pci_ops, .acpi_name = gma_acpi_name, .write_acpi_tables = gma_write_acpi_tables, }; static struct device_operations gma_func1_ops = { .read_resources = pci_dev_read_resources, .set_resources = pci_dev_set_resources, .enable_resources = pci_dev_enable_resources, .init = gma_func1_init, .scan_bus = 0, .enable = 0, .ops_pci = &gma_pci_ops, }; static const unsigned short i945_gma_func0_ids[] = { 0x2772, /* 82945G/GZ Integrated Graphics Controller */ 0x27a2, /* Mobile 945GM/GMS Express Integrated Graphics Controller*/ 0x27ae, /* Mobile 945GSE Express Integrated Graphics Controller */ 0 }; static const unsigned short i945_gma_func1_ids[] = { 0x27a6, /* Mobile 945GM/GMS/GME Express Integrated Graphics Controller */ 0 }; static const struct pci_driver i945_gma_func0_driver __pci_driver = { .ops = &gma_func0_ops, .vendor = PCI_VENDOR_ID_INTEL, .devices = i945_gma_func0_ids, }; static const struct pci_driver i945_gma_func1_driver __pci_driver = { .ops = &gma_func1_ops, .vendor = PCI_VENDOR_ID_INTEL, .devices = i945_gma_func1_ids, };