soc/intel/common/block: Add Intel common Graphics controller support

SoC need to select specific macros to compile common
graphics code.

Change-Id: Idbc73854ce9fc21a8a3e3663a98e01fc94d5a5e4
Signed-off-by: Subrata Banik <subrata.banik@intel.com>
Reviewed-on: https://review.coreboot.org/22614
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Furquan Shaikh <furquan@google.com>
Reviewed-by: Aaron Durbin <adurbin@chromium.org>

src/soc/intel/common/block/graphics/Kconfig

@@ -0,0 +1,4 @@
+config SOC_INTEL_COMMON_BLOCK_GRAPHICS
+	bool
+	help
+	  Intel Processor common Graphics support

src/soc/intel/common/block/graphics/Makefile.inc

@@ -0,0 +1 @@
+ramstage-$(CONFIG_SOC_INTEL_COMMON_BLOCK_GRAPHICS) += graphics.c

src/soc/intel/common/block/graphics/graphics.c

@@ -0,0 +1,136 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright (C) 2017 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; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * 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 <device/pci.h>
+#include <device/pci_ids.h>
+#include <intelblocks/graphics.h>
+#include <soc/pci_devs.h>
+
+/* SoC Overrides */
+__attribute__((weak)) void graphics_soc_init(struct device *dev)
+{
+	/*
+	 * User needs to implement SoC override incase wishes
+	 * to perform certain specific graphics initialization
+	 * along with pci_dev_init(dev)
+	 */
+	pci_dev_init(dev);
+}
+
+static uintptr_t graphics_get_bar(unsigned long index)
+{
+	struct device *dev = SA_DEV_IGD;
+	struct resource *gm_res;
+
+	/* Check if Graphics PCI device is disabled */
+	if (!dev->enabled)
+		return 0;
+
+	gm_res = find_resource(dev, index);
+	if (!gm_res)
+		return 0;
+
+	return gm_res->base;
+}
+
+uintptr_t graphics_get_memory_base(void)
+{
+	/*
+	 * GFX PCI config space offset 0x18 know as Graphics
+	 * Memory Range Address (GMADR)
+	 */
+	uintptr_t memory_base = graphics_get_bar(PCI_BASE_ADDRESS_2);
+	if (!memory_base)
+		die("GMADR is not programmed!");
+
+	return memory_base;
+}
+
+static uintptr_t graphics_get_gtt_base(void)
+{
+	/*
+	 * GFX PCI config space offset 0x10 know as Graphics
+	 * Translation Table Memory Mapped Range Address
+	 * (GTTMMADR)
+	 */
+	static uintptr_t gtt_base;
+	if (!gtt_base) {
+		gtt_base = graphics_get_bar(PCI_BASE_ADDRESS_0);
+		if (!gtt_base)
+			die("GTTMMADR is not programmed!");
+	}
+	return gtt_base;
+}
+
+uint32_t graphics_gtt_read(unsigned long reg)
+{
+	return read32((void *)(graphics_get_gtt_base() + reg));
+}
+
+void graphics_gtt_write(unsigned long reg, uint32_t data)
+{
+	write32((void *)(graphics_get_gtt_base() + reg), data);
+}
+
+void graphics_gtt_rmw(unsigned long reg, uint32_t andmask, uint32_t ormask)
+{
+	uint32_t val = graphics_gtt_read(reg);
+	val &= andmask;
+	val |= ormask;
+	graphics_gtt_write(reg, val);
+}
+
+static const struct device_operations graphics_ops = {
+	.read_resources		= pci_dev_read_resources,
+	.set_resources		= pci_dev_set_resources,
+	.enable_resources	= pci_dev_enable_resources,
+	.init			= graphics_soc_init,
+	.write_acpi_tables	= graphics_soc_write_acpi_opregion,
+};
+
+static const unsigned short pci_device_ids[] = {
+	PCI_DEVICE_ID_INTEL_APL_IGD_HD_505,
+	PCI_DEVICE_ID_INTEL_APL_IGD_HD_500,
+	PCI_DEVICE_ID_INTEL_CNL_GT2_ULX_1,
+	PCI_DEVICE_ID_INTEL_CNL_GT2_ULX_2,
+	PCI_DEVICE_ID_INTEL_CNL_GT2_ULX_3,
+	PCI_DEVICE_ID_INTEL_CNL_GT2_ULX_4,
+	PCI_DEVICE_ID_INTEL_CNL_GT2_ULT_1,
+	PCI_DEVICE_ID_INTEL_CNL_GT2_ULT_2,
+	PCI_DEVICE_ID_INTEL_CNL_GT2_ULT_3,
+	PCI_DEVICE_ID_INTEL_CNL_GT2_ULT_4,
+	PCI_DEVICE_ID_INTEL_GLK_IGD,
+	PCI_DEVICE_ID_INTEL_GLK_IGD_EU12,
+	PCI_DEVICE_ID_INTEL_KBL_GT1_SULTM,
+	PCI_DEVICE_ID_INTEL_KBL_GT2_SULXM,
+	PCI_DEVICE_ID_INTEL_KBL_GT2_SULTM,
+	PCI_DEVICE_ID_INTEL_KBL_GT2_SULTMR,
+	PCI_DEVICE_ID_INTEL_KBL_GT2_SHALM,
+	PCI_DEVICE_ID_INTEL_SKL_GT1_SULTM,
+	PCI_DEVICE_ID_INTEL_SKL_GT2_SULXM,
+	PCI_DEVICE_ID_INTEL_SKL_GT2_SULTM,
+	PCI_DEVICE_ID_INTEL_SKL_GT2_SHALM,
+	PCI_DEVICE_ID_INTEL_SKL_GT2_SWKSM,
+	PCI_DEVICE_ID_INTEL_SKL_GT4_SHALM,
+	0,
+};
+
+static const struct pci_driver graphics_driver __pci_driver = {
+	.ops		= &graphics_ops,
+	.vendor		= PCI_VENDOR_ID_INTEL,
+	.devices	= pci_device_ids,
+};

src/soc/intel/common/block/include/intelblocks/graphics.h

@@ -0,0 +1,54 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright 2017 Intel Corporation.
+ *
+ * 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.
+ */
+
+#ifndef SOC_INTEL_COMMON_BLOCK_GRAPHICS_H
+#define SOC_INTEL_COMMON_BLOCK_GRAPHICS_H
+
+#include <device/device.h>
+
+/*
+ * SoC overrides
+ *
+ * All new SoC must implement below functionality.
+ */
+
+/*
+ * Perform Graphics Initialization in ramstage
+ * Input:
+ * struct device *dev: device structure
+ */
+void graphics_soc_init(struct device *dev);
+
+/*
+ * Write ASL entry for Graphics opregion
+ * Input:
+ * device_t device: device structure
+ * current: start address of graphics opregion
+ * rsdp: pointer to RSDT (and XSDT) structure
+ *
+ * Output:
+ * End address of graphics opregion so that the called
+ * can use the same for future calls to write_acpi_tables
+ */
+uintptr_t graphics_soc_write_acpi_opregion(struct device *device,
+		uintptr_t current, struct acpi_rsdp *rsdp);
+
+/* Graphics MMIO register read/write APIs */
+uint32_t graphics_gtt_read(unsigned long reg);
+void graphics_gtt_write(unsigned long reg, uint32_t data);
+void graphics_gtt_rmw(unsigned long reg, uint32_t andmask, uint32_t ormask);
+uintptr_t graphics_get_memory_base(void);
+
+#endif	/* SOC_INTEL_COMMON_BLOCK_GRAPHICS_H */