| /* SPDX-License-Identifier: GPL-2.0-only */ |
| |
| #include <commonlib/helpers.h> |
| #include <arch/io.h> |
| #include <device/mmio.h> |
| #include <device/pci_ops.h> |
| #include <console/console.h> |
| #include <bootmode.h> |
| #include <delay.h> |
| #include <device/device.h> |
| #include <device/pci.h> |
| #include <device/pci_ids.h> |
| #include <drivers/intel/gma/i915_reg.h> |
| #include <drivers/intel/gma/i915.h> |
| #include <drivers/intel/gma/libgfxinit.h> |
| #include <cpu/intel/haswell/haswell.h> |
| #include <drivers/intel/gma/opregion.h> |
| #include <southbridge/intel/lynxpoint/pch.h> |
| #include <types.h> |
| |
| #include "chip.h" |
| #include "haswell.h" |
| |
| struct gt_reg { |
| u32 reg; |
| u32 andmask; |
| u32 ormask; |
| }; |
| |
| static const struct gt_reg haswell_gt_setup[] = { |
| /* Enable Counters */ |
| { 0x0a248, 0x00000000, 0x00000016 }, |
| { 0x0a000, 0x00000000, 0x00070020 }, |
| { 0x0a180, 0xff3fffff, 0x15000000 }, |
| /* Enable DOP Clock Gating */ |
| { 0x09424, 0x00000000, 0x000003fd }, |
| /* Enable Unit Level Clock Gating */ |
| { 0x09400, 0x00000000, 0x00000080 }, |
| { 0x09404, 0x00000000, 0x40401000 }, |
| { 0x09408, 0x00000000, 0x00000000 }, |
| { 0x0940c, 0x00000000, 0x02000001 }, |
| { 0x0a008, 0x00000000, 0x08000000 }, |
| /* Wake Rate Limits */ |
| { 0x0a090, 0xffffffff, 0x00000000 }, |
| { 0x0a098, 0xffffffff, 0x03e80000 }, |
| { 0x0a09c, 0xffffffff, 0x00280000 }, |
| { 0x0a0a8, 0xffffffff, 0x0001e848 }, |
| { 0x0a0ac, 0xffffffff, 0x00000019 }, |
| /* Render/Video/Blitter Idle Max Count */ |
| { 0x02054, 0x00000000, 0x0000000a }, |
| { 0x12054, 0x00000000, 0x0000000a }, |
| { 0x22054, 0x00000000, 0x0000000a }, |
| /* RC Sleep / RCx Thresholds */ |
| { 0x0a0b0, 0xffffffff, 0x00000000 }, |
| { 0x0a0b4, 0xffffffff, 0x000003e8 }, |
| { 0x0a0b8, 0xffffffff, 0x0000c350 }, |
| /* RP Settings */ |
| { 0x0a010, 0xffffffff, 0x000f4240 }, |
| { 0x0a014, 0xffffffff, 0x12060000 }, |
| { 0x0a02c, 0xffffffff, 0x0000e808 }, |
| { 0x0a030, 0xffffffff, 0x0003bd08 }, |
| { 0x0a068, 0xffffffff, 0x000101d0 }, |
| { 0x0a06c, 0xffffffff, 0x00055730 }, |
| { 0x0a070, 0xffffffff, 0x0000000a }, |
| /* RP Control */ |
| { 0x0a024, 0x00000000, 0x00000b92 }, |
| /* HW RC6 Control */ |
| { 0x0a090, 0x00000000, 0x88040000 }, |
| /* Video Frequency Request */ |
| { 0x0a00c, 0x00000000, 0x08000000 }, |
| { 0 }, |
| }; |
| |
| static const struct gt_reg haswell_gt_lock[] = { |
| { 0x0a248, 0xffffffff, 0x80000000 }, |
| { 0x0a004, 0xffffffff, 0x00000010 }, |
| { 0x0a080, 0xffffffff, 0x00000004 }, |
| { 0x0a180, 0xffffffff, 0x80000000 }, |
| { 0 }, |
| }; |
| |
| /* |
| * Some VGA option roms are used for several chipsets but they only have one PCI ID in their |
| * header. If we encounter such an option rom, we need to do the mapping ourselves. |
| */ |
| |
| u32 map_oprom_vendev(u32 vendev) |
| { |
| u32 new_vendev = vendev; |
| |
| switch (vendev) { |
| case 0x80860402: /* GT1 Desktop */ |
| case 0x80860406: /* GT1 Mobile */ |
| case 0x8086040a: /* GT1 Server */ |
| case 0x80860a06: /* GT1 ULT */ |
| |
| case 0x80860412: /* GT2 Desktop */ |
| case 0x80860416: /* GT2 Mobile */ |
| case 0x8086041a: /* GT2 Server */ |
| case 0x8086041e: /* GT1.5 Desktop */ |
| case 0x80860a16: /* GT2 ULT */ |
| |
| case 0x80860422: /* GT3 Desktop */ |
| case 0x80860426: /* GT3 Mobile */ |
| case 0x8086042a: /* GT3 Server */ |
| case 0x80860a26: /* GT3 ULT */ |
| |
| case 0x80860d22: /* GT3e Desktop */ |
| case 0x80860d16: /* GT1 Mobile 4+3 */ |
| case 0x80860d26: /* GT2 Mobile 4+3, GT3e Mobile */ |
| case 0x80860d36: /* GT3 Mobile 4+3 */ |
| |
| new_vendev = 0x80860406; /* GT1 Mobile */ |
| break; |
| } |
| |
| return new_vendev; |
| } |
| |
| static struct resource *gtt_res = NULL; |
| |
| u32 gtt_read(u32 reg) |
| { |
| u32 val; |
| val = read32(res2mmio(gtt_res, reg, 0)); |
| return val; |
| } |
| |
| void gtt_write(u32 reg, u32 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 inline void gtt_write_regs(const struct gt_reg *gt) |
| { |
| for (; gt && gt->reg; gt++) { |
| if (gt->andmask) |
| gtt_rmw(gt->reg, gt->andmask, gt->ormask); |
| else |
| gtt_write(gt->reg, gt->ormask); |
| } |
| } |
| |
| #define GTT_RETRY 1000 |
| int gtt_poll(u32 reg, u32 mask, u32 value) |
| { |
| unsigned int try = GTT_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 power_well_enable(void) |
| { |
| gtt_write(HSW_PWR_WELL_CTL1, HSW_PWR_WELL_ENABLE); |
| gtt_poll(HSW_PWR_WELL_CTL1, HSW_PWR_WELL_STATE, HSW_PWR_WELL_STATE); |
| } |
| |
| static void gma_pm_init_pre_vbios(struct device *dev) |
| { |
| printk(BIOS_DEBUG, "GT Power Management Init\n"); |
| |
| gtt_res = probe_resource(dev, PCI_BASE_ADDRESS_0); |
| if (!gtt_res || !gtt_res->base) |
| return; |
| |
| power_well_enable(); |
| |
| /* |
| * Enable RC6 |
| */ |
| |
| /* Enable Force Wake */ |
| gtt_write(0x0a180, 1 << 5); |
| gtt_write(0x0a188, 0x00010001); |
| gtt_poll(FORCEWAKE_ACK_HSW, 1 << 0, 1 << 0); |
| |
| /* GT Settings */ |
| gtt_write_regs(haswell_gt_setup); |
| |
| /* Wait for Mailbox Ready */ |
| gtt_poll(0x138124, (1 << 31), (0 << 31)); |
| |
| /* Mailbox Data - RC6 VIDS */ |
| gtt_write(0x138128, 0x00000000); |
| |
| /* Mailbox Command */ |
| gtt_write(0x138124, 0x80000004); |
| |
| /* Wait for Mailbox Ready */ |
| gtt_poll(0x138124, (1 << 31), (0 << 31)); |
| |
| /* Enable PM Interrupts */ |
| gtt_write(GEN6_PMIER, GEN6_PM_MBOX_EVENT | GEN6_PM_THERMAL_EVENT | |
| GEN6_PM_RP_DOWN_TIMEOUT | GEN6_PM_RP_UP_THRESHOLD | |
| GEN6_PM_RP_DOWN_THRESHOLD | GEN6_PM_RP_UP_EI_EXPIRED | |
| GEN6_PM_RP_DOWN_EI_EXPIRED); |
| |
| /* Enable RC6 in idle */ |
| gtt_write(0x0a094, 0x00040000); |
| |
| /* PM Lock Settings */ |
| gtt_write_regs(haswell_gt_lock); |
| } |
| |
| static void init_display_planes(void) |
| { |
| int pipe, plane; |
| |
| /* Disable cursor mode */ |
| for (pipe = PIPE_A; pipe <= PIPE_C; pipe++) { |
| gtt_write(CURCNTR_IVB(pipe), CURSOR_MODE_DISABLE); |
| gtt_write(CURBASE_IVB(pipe), 0x00000000); |
| } |
| |
| /* Disable primary plane and set surface base address */ |
| for (plane = PLANE_A; plane <= PLANE_C; plane++) { |
| gtt_write(DSPCNTR(plane), DISPLAY_PLANE_DISABLE); |
| gtt_write(DSPSURF(plane), 0x00000000); |
| } |
| |
| /* Disable VGA display */ |
| gtt_write(CPU_VGACNTRL, CPU_VGA_DISABLE); |
| } |
| |
| static void gma_setup_panel(struct device *dev) |
| { |
| struct northbridge_intel_haswell_config *conf = config_of(dev); |
| const struct i915_gpu_panel_config *panel_cfg = &conf->panel_cfg; |
| 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 |= ((panel_cfg->up_delay_ms * 10) & 0x1fff) << 16; |
| reg32 |= (panel_cfg->backlight_on_delay_ms * 10) & 0x1fff; |
| gtt_write(PCH_PP_ON_DELAYS, reg32); |
| } |
| |
| /* Setup Panel Power Off Delays */ |
| reg32 = gtt_read(PCH_PP_OFF_DELAYS); |
| if (!reg32) { |
| reg32 = ((panel_cfg->down_delay_ms * 10) & 0x1fff) << 16; |
| reg32 |= (panel_cfg->backlight_off_delay_ms * 10) & 0x1fff; |
| gtt_write(PCH_PP_OFF_DELAYS, reg32); |
| } |
| |
| /* Setup Panel Power Cycle Delay */ |
| if (panel_cfg->cycle_delay_ms) { |
| reg32 = gtt_read(PCH_PP_DIVISOR); |
| reg32 &= ~0x1f; |
| reg32 |= (DIV_ROUND_UP(panel_cfg->cycle_delay_ms, 100) + 1) & 0x1f; |
| gtt_write(PCH_PP_DIVISOR, reg32); |
| } |
| |
| /* Enforce the PCH PWM function, as so does Linux. |
| The CPU PWM controls are disabled after reset. */ |
| if (panel_cfg->backlight_pwm_hz) { |
| /* Reference clock is either 24MHz or 135MHz. We can choose |
| either a 16 or a 128 step increment. Use 16 if we would |
| have less than 100 steps otherwise. */ |
| const unsigned int refclock = CONFIG(INTEL_LYNXPOINT_LP) ? 24*MHz : 135*MHz; |
| const unsigned int hz_limit = refclock / 128 / 100; |
| unsigned int pwm_increment, pwm_period; |
| u32 south_chicken2; |
| |
| south_chicken2 = gtt_read(SOUTH_CHICKEN2); |
| if (panel_cfg->backlight_pwm_hz > hz_limit) { |
| pwm_increment = 16; |
| south_chicken2 |= LPT_PWM_GRANULARITY; |
| } else { |
| pwm_increment = 128; |
| south_chicken2 &= ~LPT_PWM_GRANULARITY; |
| } |
| gtt_write(SOUTH_CHICKEN2, south_chicken2); |
| |
| pwm_period = refclock / pwm_increment / panel_cfg->backlight_pwm_hz; |
| printk(BIOS_INFO, |
| "GMA: Setting backlight PWM frequency to %uMHz / %u / %u = %uHz\n", |
| refclock / MHz, pwm_increment, pwm_period, |
| DIV_ROUND_CLOSEST(refclock, pwm_increment * pwm_period)); |
| |
| /* Start with a 50% duty cycle. */ |
| gtt_write(BLC_PWM_PCH_CTL2, pwm_period << 16 | pwm_period / 2); |
| |
| gtt_write(BLC_PWM_PCH_CTL1, |
| (panel_cfg->backlight_polarity == GPU_BACKLIGHT_POLARITY_LOW) << 29 | |
| BLM_PCH_OVERRIDE_ENABLE | BLM_PCH_PWM_ENABLE); |
| } |
| |
| /* Get display,pipeline,and DDI registers into a basic sane state */ |
| power_well_enable(); |
| |
| init_display_planes(); |
| |
| /* |
| * DDI-A params set: |
| * bit 0: Display detected (RO) |
| * bit 4: DDI A supports 4 lanes and DDI E is not used |
| * bit 7: DDI buffer is idle |
| */ |
| reg32 = DDI_BUF_IS_IDLE | DDI_INIT_DISPLAY_DETECTED; |
| if (!conf->gpu_ddi_e_connected) |
| reg32 |= DDI_A_4_LANES; |
| gtt_write(DDI_BUF_CTL_A, reg32); |
| |
| /* Set FDI registers - is this required? */ |
| gtt_write(_FDI_RXA_MISC, 0x00200090); |
| gtt_write(_FDI_RXA_MISC, 0x0a000000); |
| |
| /* Enable the handshake with PCH display when processing reset */ |
| gtt_write(NDE_RSTWRN_OPT, RST_PCH_HNDSHK_EN); |
| |
| /* Undocumented */ |
| gtt_write(0x42090, 0x04000000); |
| gtt_write(0x9840, 0x00000000); |
| gtt_write(0x42090, 0xa4000000); |
| |
| gtt_write(SOUTH_DSPCLK_GATE_D, PCH_LP_PARTITION_LEVEL_DISABLE); |
| |
| /* Undocumented */ |
| gtt_write(0x42080, 0x00004000); |
| |
| /* Prepare DDI buffers for DP and FDI */ |
| intel_prepare_ddi(); |
| |
| /* Hot plug detect buffer enabled for port A */ |
| gtt_write(DIGITAL_PORT_HOTPLUG_CNTRL, DIGITAL_PORTA_HOTPLUG_ENABLE); |
| |
| /* Enable HPD buffer for digital port D and B */ |
| gtt_write(PCH_PORT_HOTPLUG, PORTD_HOTPLUG_ENABLE | PORTB_HOTPLUG_ENABLE); |
| |
| /* |
| * Bits 4:0 - Power cycle delay (default 0x6 --> 500ms) |
| * Bits 31:8 - Reference divider (0x0004af ----> 24MHz) |
| */ |
| gtt_write(PCH_PP_DIVISOR, 0x0004af06); |
| } |
| |
| static void gma_pm_init_post_vbios(struct device *dev) |
| { |
| int cdclk = 0; |
| int devid = pci_read_config16(dev, PCI_DEVICE_ID); |
| int gpu_is_ulx = 0; |
| |
| if (devid == 0x0a0e || devid == 0x0a1e) |
| gpu_is_ulx = 1; |
| |
| /* CD Frequency */ |
| if ((gtt_read(0x42014) & 0x1000000) || gpu_is_ulx || haswell_is_ult()) |
| cdclk = 0; /* fixed frequency */ |
| else |
| cdclk = 2; /* variable frequency */ |
| |
| if (gpu_is_ulx || cdclk != 0) |
| gtt_rmw(0x130040, 0xf7ffffff, 0x04000000); |
| else |
| gtt_rmw(0x130040, 0xf3ffffff, 0x00000000); |
| |
| /* More magic */ |
| if (haswell_is_ult() || gpu_is_ulx) { |
| if (!gpu_is_ulx) |
| gtt_write(0x138128, 0x00000000); |
| else |
| gtt_write(0x138128, 0x00000001); |
| gtt_write(0x13812c, 0x00000000); |
| gtt_write(0x138124, 0x80000017); |
| } |
| |
| /* Disable Force Wake */ |
| gtt_write(0x0a188, 0x00010000); |
| gtt_poll(FORCEWAKE_ACK_HSW, 1 << 0, 0 << 0); |
| gtt_write(0x0a188, 0x00000001); |
| } |
| |
| /* Enable SCI to ACPI _GPE._L06 */ |
| static void gma_enable_swsci(void) |
| { |
| u16 reg16; |
| |
| /* Clear DMISCI status */ |
| reg16 = inw(get_pmbase() + TCO1_STS); |
| reg16 &= DMISCI_STS; |
| outw(reg16, get_pmbase() + TCO1_STS); |
| |
| /* Clear and enable ACPI TCO SCI */ |
| enable_tco_sci(); |
| } |
| |
| static void gma_func0_init(struct device *dev) |
| { |
| int lightup_ok = 0; |
| |
| intel_gma_init_igd_opregion(); |
| |
| /* Init graphics power management */ |
| gma_pm_init_pre_vbios(dev); |
| |
| /* Pre panel init */ |
| gma_setup_panel(dev); |
| |
| if (!CONFIG(NO_GFX_INIT)) |
| pci_or_config16(dev, PCI_COMMAND, PCI_COMMAND_MASTER); |
| |
| int vga_disable = (pci_read_config16(dev, GGC) & 2) >> 1; |
| |
| if (CONFIG(MAINBOARD_USE_LIBGFXINIT)) { |
| if (vga_disable) { |
| printk(BIOS_INFO, |
| "IGD is not decoding legacy VGA MEM and IO: skipping NATIVE graphic init\n"); |
| } else { |
| printk(BIOS_SPEW, "NATIVE graphics, run native enable\n"); |
| gma_gfxinit(&lightup_ok); |
| gfx_set_init_done(1); |
| } |
| } |
| |
| if (!lightup_ok) { |
| printk(BIOS_SPEW, "FUI did not run; using VBIOS\n"); |
| pci_dev_init(dev); |
| } |
| |
| printk(BIOS_DEBUG, "GT Power Management Init (post VBIOS)\n"); |
| |
| gma_pm_init_post_vbios(dev); |
| |
| gma_enable_swsci(); |
| } |
| |
| static void gma_generate_ssdt(const struct device *dev) |
| { |
| const struct northbridge_intel_haswell_config *chip = dev->chip_info; |
| |
| drivers_intel_gma_displays_ssdt_generate(&chip->gfx); |
| } |
| |
| static void gma_func0_disable(struct device *dev) |
| { |
| /* Disable VGA decode */ |
| pci_or_config16(pcidev_on_root(0, 0), GGC, 1 << 1); |
| } |
| |
| static struct device_operations gma_func0_ops = { |
| .read_resources = pci_dev_read_resources, |
| .set_resources = pci_dev_set_resources, |
| .enable_resources = pci_dev_enable_resources, |
| .init = gma_func0_init, |
| .acpi_fill_ssdt = gma_generate_ssdt, |
| .vga_disable = gma_func0_disable, |
| .ops_pci = &pci_dev_ops_pci, |
| }; |
| |
| static const unsigned short pci_device_ids[] = { |
| 0x0402, /* Desktop GT1 */ |
| 0x0412, /* Desktop GT2 */ |
| 0x041e, /* Desktop GT1.5 */ |
| 0x0422, /* Desktop GT3 */ |
| 0x0d22, /* Desktop GT3e */ |
| 0x0406, /* Mobile GT1 */ |
| 0x0416, /* Mobile GT2 */ |
| 0x0426, /* Mobile GT3 */ |
| 0x0d16, /* Mobile 4+3 GT1 */ |
| 0x0d26, /* Mobile 4+3 GT2, Mobile GT3e */ |
| 0x0d36, /* Mobile 4+3 GT3 */ |
| 0x0a06, /* ULT GT1 */ |
| 0x0a16, /* ULT GT2 */ |
| 0x0a26, /* ULT GT3 */ |
| 0x0a0e, /* ULX GT1 */ |
| 0x0a1e, /* ULX GT2 */ |
| 0, |
| }; |
| |
| static const struct pci_driver pch_lpc __pci_driver = { |
| .ops = &gma_func0_ops, |
| .vendor = PCI_VID_INTEL, |
| .devices = pci_device_ids, |
| }; |