| /* |
| * This file is part of the coreboot project. |
| * |
| * Copyright (C) 2011 Chromium OS Authors |
| * |
| * 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. |
| * |
| * You should have received a copy of the GNU General Public License |
| * along with this program; if not, write to the Free Software |
| * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA |
| */ |
| |
| #include <arch/io.h> |
| #include <console/console.h> |
| #include <delay.h> |
| #include <device/device.h> |
| #include <device/pci.h> |
| #include <device/pci_ids.h> |
| |
| #include "chip.h" |
| #include "sandybridge.h" |
| |
| /* 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 ourselfes |
| */ |
| |
| u32 map_oprom_vendev(u32 vendev) |
| { |
| u32 new_vendev=vendev; |
| |
| switch (vendev) { |
| case 0x01028086: /* GT1 Desktop */ |
| case 0x010a8086: /* GT1 Server */ |
| case 0x01128086: /* GT2 Desktop */ |
| case 0x01168086: /* GT2 Mobile */ |
| case 0x01228086: /* GT2 Desktop >=1.3GHz */ |
| case 0x01268086: /* GT2 Mobile >=1.3GHz */ |
| new_vendev=0x01068086; /* GT1 Mobile */ |
| break; |
| } |
| |
| return new_vendev; |
| } |
| |
| static struct resource *gtt_res = NULL; |
| |
| static inline u32 gtt_read(u32 reg) |
| { |
| return read32(gtt_res->base + reg); |
| } |
| |
| static inline void gtt_write(u32 reg, u32 data) |
| { |
| write32(gtt_res->base + reg, data); |
| } |
| |
| #define GTT_RETRY 1000 |
| static int gtt_poll(u32 reg, u32 mask, u32 value) |
| { |
| unsigned 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 gma_pm_init_pre_vbios(struct device *dev) |
| { |
| u32 reg32; |
| |
| printk(BIOS_DEBUG, "GT Power Management Init\n"); |
| |
| gtt_res = find_resource(dev, PCI_BASE_ADDRESS_0); |
| if (!gtt_res || !gtt_res->base) |
| return; |
| |
| /* 1: Enable force wake */ |
| gtt_write(0xa18c, 0x00000001); |
| if (!gtt_poll(0x130090, (1 << 0), (1 << 0))) |
| return; |
| |
| /* 1d: Set GTT+0x42004 [15:14]=11 (SnB C1+) */ |
| reg32 = gtt_read(0x42004); |
| reg32 |= (1 << 14) | (1 << 15); |
| gtt_write(0x42004, reg32); |
| |
| /* 2: Get GT SKU from GTT+0x911c[13] */ |
| reg32 = gtt_read(0x911c); |
| if (reg32 & (1 << 13)) { |
| printk(BIOS_DEBUG, "GT1 Power Meter Weights\n"); |
| gtt_write(0xa200, 0xcc000000); |
| gtt_write(0xa204, 0x07000040); |
| gtt_write(0xa208, 0x0000fe00); |
| gtt_write(0xa20c, 0x00000000); |
| gtt_write(0xa210, 0x17000000); |
| gtt_write(0xa214, 0x00000021); |
| gtt_write(0xa218, 0x0817fe19); |
| gtt_write(0xa21c, 0x00000000); |
| gtt_write(0xa220, 0x00000000); |
| gtt_write(0xa224, 0xcc000000); |
| gtt_write(0xa228, 0x07000040); |
| gtt_write(0xa22c, 0x0000fe00); |
| gtt_write(0xa230, 0x00000000); |
| gtt_write(0xa234, 0x17000000); |
| gtt_write(0xa238, 0x00000021); |
| gtt_write(0xa23c, 0x0817fe19); |
| gtt_write(0xa240, 0x00000000); |
| gtt_write(0xa244, 0x00000000); |
| gtt_write(0xa248, 0x8000421e); |
| } else { |
| printk(BIOS_DEBUG, "GT2 Power Meter Weights\n"); |
| gtt_write(0xa200, 0x330000a6); |
| gtt_write(0xa204, 0x402d0031); |
| gtt_write(0xa208, 0x00165f83); |
| gtt_write(0xa20c, 0xf1000000); |
| gtt_write(0xa210, 0x00000000); |
| gtt_write(0xa214, 0x00160016); |
| gtt_write(0xa218, 0x002a002b); |
| gtt_write(0xa21c, 0x00000000); |
| gtt_write(0xa220, 0x00000000); |
| gtt_write(0xa224, 0x330000a6); |
| gtt_write(0xa228, 0x402d0031); |
| gtt_write(0xa22c, 0x00165f83); |
| gtt_write(0xa230, 0xf1000000); |
| gtt_write(0xa234, 0x00000000); |
| gtt_write(0xa238, 0x00160016); |
| gtt_write(0xa23c, 0x002a002b); |
| gtt_write(0xa240, 0x00000000); |
| gtt_write(0xa244, 0x00000000); |
| gtt_write(0xa248, 0x8000421e); |
| } |
| |
| /* 3: Gear ratio map */ |
| gtt_write(0xa004, 0x00000010); |
| |
| /* 4: GFXPAUSE */ |
| gtt_write(0xa000, 0x00070020); |
| |
| /* 5: Dynamic EU trip control */ |
| gtt_write(0xa080, 0x00000004); |
| |
| /* 6: ECO bits (bit 20=1 for step D1+) */ |
| gtt_write(0xa180, 0x84100000); |
| |
| /* 6a: SnB step D2+ */ |
| reg32 = gtt_read(0x9400); |
| reg32 |= (1 << 7); |
| gtt_write(0x9400, reg32); |
| |
| reg32 = gtt_read(0x941c); |
| reg32 |= (1 << 1); |
| gtt_write(0x941c, reg32); |
| if (!gtt_poll(0x941c, (1 << 1), (0 << 1))) |
| return; |
| |
| /* 6b: Clocking reset controls */ |
| gtt_write(0x9424, 0x00000000); |
| |
| /* 7 */ |
| if (!gtt_poll(0x138124, (1 << 31), (0 << 31))) |
| return; |
| gtt_write(0x138128, 0x00000029); /* Mailbox Data */ |
| gtt_write(0x138124, 0x80000004); /* Mailbox Cmd for RC6 VID */ |
| if (!gtt_poll(0x138124, (1 << 31), (0 << 31))) |
| return; |
| gtt_write(0x138124, 0x8000000a); /* Mailbox Cmd to clear RC6 count */ |
| if (!gtt_poll(0x138124, (1 << 31), (0 << 31))) |
| return; |
| |
| /* 8 */ |
| gtt_write(0xa090, 0x00000000); /* RC Control */ |
| gtt_write(0xa098, 0x03e80000); /* RC1e Wake Rate Limit */ |
| gtt_write(0xa09c, 0x0028001e); /* RC6/6p Wake Rate Limit */ |
| gtt_write(0xa0a0, 0x0000001e); /* RC6pp Wake Rate Limit */ |
| gtt_write(0xa0a8, 0x0001e848); /* RC Evaluation Interval */ |
| gtt_write(0xa0ac, 0x00000019); /* RC Idle Hysteresis */ |
| |
| /* 9 */ |
| gtt_write(0x2054, 0x0000000a); /* Render Idle Max Count */ |
| gtt_write(0x12054,0x0000000a); /* Video Idle Max Count */ |
| gtt_write(0x22054,0x0000000a); /* Blitter Idle Max Count */ |
| |
| /* 10 */ |
| gtt_write(0xa0b0, 0x00000000); /* Unblock Ack to Busy */ |
| gtt_write(0xa0b4, 0x000003e8); /* RC1e Threshold */ |
| gtt_write(0xa0b8, 0x0000c350); /* RC6 Threshold */ |
| gtt_write(0xa0bc, 0x000186a0); /* RC6p Threshold */ |
| gtt_write(0xa0c0, 0x0000fa00); /* RC6pp Threshold */ |
| |
| /* 11 */ |
| gtt_write(0xa010, 0x000f4240); /* RP Down Timeout */ |
| gtt_write(0xa014, 0x12060000); /* RP Interrupt Limits */ |
| gtt_write(0xa02c, 0x00015f90); /* RP Up Threshold */ |
| gtt_write(0xa030, 0x000186a0); /* RP Down Threshold */ |
| gtt_write(0xa068, 0x000186a0); /* RP Up EI */ |
| gtt_write(0xa06c, 0x000493e0); /* RP Down EI */ |
| gtt_write(0xa070, 0x0000000a); /* RP Idle Hysteresis */ |
| |
| /* 11a: Enable Render Standby (RC6) */ |
| gtt_write(0xa090, 0x88040000); /* HW RC Control */ |
| |
| /* 12: Normal Frequency Request */ |
| /* RPNFREQ_VAL comes from MCHBAR 0x5998 23:16 (8 bits!? use 7) */ |
| reg32 = MCHBAR32(0x5998); |
| reg32 >>= 16; |
| reg32 &= 0xef; |
| reg32 <<= 25; |
| gtt_write(0xa008, reg32); |
| |
| /* 13: RP Control */ |
| gtt_write(0xa024, 0x00000592); |
| |
| /* 14: Enable PM Interrupts */ |
| gtt_write(0x4402c, 0x03000076); |
| |
| /* Clear 0x6c024 [8:6] */ |
| reg32 = gtt_read(0x6c024); |
| reg32 &= ~0x000001c0; |
| gtt_write(0x6c024, reg32); |
| } |
| |
| static void gma_pm_init_post_vbios(struct device *dev) |
| { |
| struct northbridge_intel_sandybridge_config *config = dev->chip_info; |
| |
| printk(BIOS_DEBUG, "GT Power Management Init (post VBIOS)\n"); |
| |
| /* 15: Deassert Force Wake */ |
| gtt_write(0xa18c, gtt_read(0xa18c) & ~1); |
| if (!gtt_poll(0x130090, (1 << 0), (0 << 0))) |
| return; |
| |
| /* 16: SW RC Control */ |
| gtt_write(0xa094, 0x00060000); |
| |
| if (config->lvds_blc_freq) { |
| /* Enable backlight */ |
| gtt_write(0xc8250, 0x80000000); |
| gtt_write(0xc8254, config->lvds_blc_freq); |
| } |
| } |
| |
| static void gma_func0_init(struct device *dev) |
| { |
| u32 reg32; |
| |
| /* IGD needs to be Bus Master */ |
| reg32 = pci_read_config32(dev, PCI_COMMAND); |
| reg32 |= PCI_COMMAND_MASTER | PCI_COMMAND_MEMORY | PCI_COMMAND_IO; |
| pci_write_config32(dev, PCI_COMMAND, reg32); |
| |
| /* Init graphics power management */ |
| gma_pm_init_pre_vbios(dev); |
| |
| /* PCI Init, will run VBIOS */ |
| pci_dev_init(dev); |
| |
| /* Post VBIOS init */ |
| gma_pm_init_post_vbios(dev); |
| } |
| |
| static void gma_set_subsystem(device_t dev, unsigned vendor, unsigned 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)); |
| } |
| } |
| |
| static struct pci_operations gma_pci_ops = { |
| .set_subsystem = gma_set_subsystem, |
| }; |
| |
| 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, |
| .scan_bus = 0, |
| .enable = 0, |
| .ops_pci = &gma_pci_ops, |
| }; |
| |
| static const struct pci_driver gma_func0_driver_1 __pci_driver = { |
| .ops = &gma_func0_ops, |
| .vendor = PCI_VENDOR_ID_INTEL, |
| .device = 0x0106, |
| }; |
| |
| static const struct pci_driver gma_func0_driver_2 __pci_driver = { |
| .ops = &gma_func0_ops, |
| .vendor = PCI_VENDOR_ID_INTEL, |
| .device = 0x0116, |
| }; |
| |