| /* |
| * This file is part of the coreboot project. |
| * |
| * Copyright 2013 Google Inc. |
| * Copyright (C) 2016 Siemens AG |
| * |
| * 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 <console/console.h> |
| #include <delay.h> |
| #include <device/device.h> |
| #include <device/pci.h> |
| #include <device/pci_ids.h> |
| #include <reg_script.h> |
| #include <stdlib.h> |
| |
| #include <soc/gfx.h> |
| #include <soc/iosf.h> |
| #include <soc/pci_devs.h> |
| #include <soc/ramstage.h> |
| |
| #define GFX_TIMEOUT 100000 /* 100ms */ |
| |
| static const struct reg_script gpu_pre_vbios_script[] = { |
| /* Make sure GFX is bus master with MMIO access */ |
| REG_PCI_OR32(PCI_COMMAND, PCI_COMMAND_MASTER|PCI_COMMAND_MEMORY), |
| /* Display */ |
| REG_IOSF_WRITE(IOSF_PORT_PMC, PUNIT_PWRGT_CONTROL, 0xc0), |
| REG_IOSF_POLL(IOSF_PORT_PMC, PUNIT_PWRGT_STATUS, 0xc0, 0xc0, |
| GFX_TIMEOUT), |
| /* Tx/Rx Lanes */ |
| REG_IOSF_WRITE(IOSF_PORT_PMC, PUNIT_PWRGT_CONTROL, 0xfff0c0), |
| REG_IOSF_POLL(IOSF_PORT_PMC, PUNIT_PWRGT_STATUS, 0xfff0c0, 0xfff0c0, |
| GFX_TIMEOUT), |
| /* Common Lane */ |
| REG_IOSF_WRITE(IOSF_PORT_PMC, PUNIT_PWRGT_CONTROL, 0xfffcc0), |
| REG_IOSF_POLL(IOSF_PORT_PMC, PUNIT_PWRGT_STATUS, 0xfffcc0, 0xfffcc0, |
| GFX_TIMEOUT), |
| /* Ungating Tx only */ |
| REG_IOSF_WRITE(IOSF_PORT_PMC, PUNIT_PWRGT_CONTROL, 0xf00cc0), |
| REG_IOSF_POLL(IOSF_PORT_PMC, PUNIT_PWRGT_STATUS, 0xfffcc0, 0xf00cc0, |
| GFX_TIMEOUT), |
| /* Ungating Common Lane only */ |
| REG_IOSF_WRITE(IOSF_PORT_PMC, PUNIT_PWRGT_CONTROL, 0xf000c0), |
| REG_IOSF_POLL(IOSF_PORT_PMC, PUNIT_PWRGT_STATUS, 0xffffc0, 0xf000c0, |
| GFX_TIMEOUT), |
| /* Ungating Display */ |
| REG_IOSF_WRITE(IOSF_PORT_PMC, PUNIT_PWRGT_CONTROL, 0xf00000), |
| REG_IOSF_POLL(IOSF_PORT_PMC, PUNIT_PWRGT_STATUS, 0xfffff0, 0xf00000, |
| GFX_TIMEOUT), |
| REG_SCRIPT_END |
| }; |
| |
| static const struct reg_script gfx_post_vbios_script[] = { |
| /* Deassert Render Force-Wake */ |
| REG_RES_WRITE32(PCI_BASE_ADDRESS_0, 0x1300b0, 0x80000000), |
| REG_RES_POLL32(PCI_BASE_ADDRESS_0, 0x1300b4, 0x8000, 0, GFX_TIMEOUT), |
| /* Deassert Media Force-Wake */ |
| REG_RES_WRITE32(PCI_BASE_ADDRESS_0, 0x1300b8, 0x80000000), |
| REG_RES_POLL32(PCI_BASE_ADDRESS_0, 0x1300bc, 0x8000, 0, GFX_TIMEOUT), |
| /* Set Lock bits */ |
| REG_PCI_RMW32(GGC, 0xffffffff, 1), |
| REG_PCI_RMW32(GSM_BASE, 0xffffffff, 1), |
| REG_PCI_RMW32(GTT_BASE, 0xffffffff, 1), |
| REG_SCRIPT_END |
| }; |
| |
| static inline void gfx_run_script(struct device *dev, const struct reg_script *ops) |
| { |
| reg_script_run_on_dev(dev, ops); |
| } |
| |
| static void gfx_pre_vbios_init(struct device *dev) |
| { |
| printk(BIOS_INFO, "GFX: Pre VBIOS Init\n"); |
| gfx_run_script(dev, gpu_pre_vbios_script); |
| } |
| |
| static void gfx_post_vbios_init(struct device *dev) |
| { |
| printk(BIOS_INFO, "GFX: Post VBIOS Init\n"); |
| gfx_run_script(dev, gfx_post_vbios_script); |
| } |
| |
| static void gfx_init(struct device *dev) |
| { |
| /* Pre VBIOS Init */ |
| gfx_pre_vbios_init(dev); |
| |
| /* Run VBIOS */ |
| pci_dev_init(dev); |
| |
| /* Post VBIOS Init */ |
| gfx_post_vbios_init(dev); |
| } |
| |
| static struct device_operations gfx_device_ops = { |
| .read_resources = pci_dev_read_resources, |
| .set_resources = pci_dev_set_resources, |
| .enable_resources = pci_dev_enable_resources, |
| .init = gfx_init, |
| .ops_pci = &soc_pci_ops, |
| }; |
| |
| static const struct pci_driver gfx_driver __pci_driver = { |
| .ops = &gfx_device_ops, |
| .vendor = PCI_VENDOR_ID_INTEL, |
| .device = GFX_DEVID, |
| }; |