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/*
* This file is part of the coreboot project.
*
* Copyright 2013 Google Inc.
* Copyright (C) 2015 Intel Corp.
*
* 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.
*/
#include "chip.h"
#include <arch/io.h>
#include <console/console.h>
#include <device/device.h>
#include <device/pci.h>
#include <device/pci_ids.h>
#include <reg_script.h>
#include <soc/gfx.h>
#include <soc/pci_devs.h>
#include <soc/ramstage.h>
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),
REG_SCRIPT_END
};
static const struct reg_script gfx_post_vbios_script[] = {
/* Set Lock bits */
REG_PCI_RMW32(GGC, 0xffffffff, GGC_GGCLCK),
REG_PCI_RMW32(GSM_BASE, 0xffffffff, GSM_BDSM_LOCK),
REG_PCI_RMW32(GTT_BASE, 0xffffffff, GTT_BGSM_LOCK),
REG_SCRIPT_END
};
static inline void gfx_run_script(device_t dev, const struct reg_script *ops)
{
reg_script_run_on_dev(dev, ops);
}
static void gfx_pre_vbios_init(device_t dev)
{
printk(BIOS_SPEW, "%s/%s ( %s )\n",
__FILE__, __func__, dev_name(dev));
printk(BIOS_INFO, "GFX: Pre VBIOS Init\n");
gfx_run_script(dev, gpu_pre_vbios_script);
}
static void gfx_post_vbios_init(device_t dev)
{
printk(BIOS_SPEW, "%s/%s ( %s )\n",
__FILE__, __func__, dev_name(dev));
printk(BIOS_INFO, "GFX: Post VBIOS Init\n");
gfx_run_script(dev, gfx_post_vbios_script);
}
static void gfx_init(device_t dev)
{
printk(BIOS_SPEW, "%s/%s ( %s )\n",
__FILE__, __func__, dev_name(dev));
/* Pre VBIOS Init */
gfx_pre_vbios_init(dev);
/* Run VBIOS */
pci_dev_init(dev);
/* Post VBIOS Init */
gfx_post_vbios_init(dev);
}
static void gfx_read_resources(device_t dev)
{
printk(BIOS_SPEW, "%s/%s ( %s )\n",
__FILE__, __func__, dev_name(dev));
pci_dev_read_resources(dev);
#if IS_ENABLED(CONFIG_MARK_GRAPHICS_MEM_WRCOMB)
struct resource *res;
/* Set the graphics memory to write combining. */
res = find_resource(dev, PCI_BASE_ADDRESS_2);
if (res == NULL) {
printk(BIOS_DEBUG, "GFX: memory resource not found.\n");
return;
}
res->flags |= IORESOURCE_WRCOMB;
#endif
}
static struct device_operations gfx_device_ops = {
.read_resources = gfx_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,
};
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