drivers/gpu/drm/radeon/rs400.c - kernel/msm-5.4 - Gitiles

 /*
  * Copyright 2008 Advanced Micro Devices, Inc.
  * Copyright 2008 Red Hat Inc.
  * Copyright 2009 Jerome Glisse.
  *
  * Permission is hereby granted, free of charge, to any person obtaining a
  * copy of this software and associated documentation files (the "Software"),
  * to deal in the Software without restriction, including without limitation
  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
  * and/or sell copies of the Software, and to permit persons to whom the
  * Software is furnished to do so, subject to the following conditions:
  *
  * The above copyright notice and this permission notice shall be included in
  * all copies or substantial portions of the Software.
  *
  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
  * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
  * OTHER DEALINGS IN THE SOFTWARE.
  *
  * Authors: Dave Airlie
  *          Alex Deucher
  *          Jerome Glisse
  */
 #include <linux/seq_file.h>
 #include <linux/slab.h>
 #include <drm/drmP.h>
 #include "radeon.h"
 #include "radeon_asic.h"
 #include "rs400d.h"

 /* This files gather functions specifics to : rs400,rs480 */
 static int rs400_debugfs_pcie_gart_info_init(struct radeon_device *rdev);

 void rs400_gart_adjust_size(struct radeon_device *rdev)
 {
 	/* Check gart size */
 	switch (rdev->mc.gtt_size/(1024*1024)) {
 	case 32:
 	case 64:
 	case 128:
 	case 256:
 	case 512:
 	case 1024:
 	case 2048:
 		break;
 	default:
 		DRM_ERROR("Unable to use IGP GART size %uM\n",
 			  (unsigned)(rdev->mc.gtt_size >> 20));
 		DRM_ERROR("Valid GART size for IGP are 32M,64M,128M,256M,512M,1G,2G\n");
 		DRM_ERROR("Forcing to 32M GART size\n");
 		rdev->mc.gtt_size = 32 * 1024 * 1024;
 		return;
 	}
 }

 void rs400_gart_tlb_flush(struct radeon_device *rdev)
 {
 	uint32_t tmp;
 	unsigned int timeout = rdev->usec_timeout;

 	WREG32_MC(RS480_GART_CACHE_CNTRL, RS480_GART_CACHE_INVALIDATE);
 	do {
 		tmp = RREG32_MC(RS480_GART_CACHE_CNTRL);
 		if ((tmp & RS480_GART_CACHE_INVALIDATE) == 0)
 			break;
 		DRM_UDELAY(1);
 		timeout--;
 	} while (timeout > 0);
 	WREG32_MC(RS480_GART_CACHE_CNTRL, 0);
 }

 int rs400_gart_init(struct radeon_device *rdev)
 {
 	int r;

 	if (rdev->gart.ptr) {
 		WARN(1, "RS400 GART already initialized\n");
 		return 0;
 	}
 	/* Check gart size */
 	switch(rdev->mc.gtt_size / (1024 * 1024)) {
 	case 32:
 	case 64:
 	case 128:
 	case 256:
 	case 512:
 	case 1024:
 	case 2048:
 		break;
 	default:
 		return -EINVAL;
 	}
 	/* Initialize common gart structure */
 	r = radeon_gart_init(rdev);
 	if (r)
 		return r;
 	if (rs400_debugfs_pcie_gart_info_init(rdev))
 		DRM_ERROR("Failed to register debugfs file for RS400 GART !\n");
 	rdev->gart.table_size = rdev->gart.num_gpu_pages * 4;
 	return radeon_gart_table_ram_alloc(rdev);
 }

 int rs400_gart_enable(struct radeon_device *rdev)
 {
 	uint32_t size_reg;
 	uint32_t tmp;

 	radeon_gart_restore(rdev);
 	tmp = RREG32_MC(RS690_AIC_CTRL_SCRATCH);
 	tmp |= RS690_DIS_OUT_OF_PCI_GART_ACCESS;
 	WREG32_MC(RS690_AIC_CTRL_SCRATCH, tmp);
 	/* Check gart size */
 	switch(rdev->mc.gtt_size / (1024 * 1024)) {
 	case 32:
 		size_reg = RS480_VA_SIZE_32MB;
 		break;
 	case 64:
 		size_reg = RS480_VA_SIZE_64MB;
 		break;
 	case 128:
 		size_reg = RS480_VA_SIZE_128MB;
 		break;
 	case 256:
 		size_reg = RS480_VA_SIZE_256MB;
 		break;
 	case 512:
 		size_reg = RS480_VA_SIZE_512MB;
 		break;
 	case 1024:
 		size_reg = RS480_VA_SIZE_1GB;
 		break;
 	case 2048:
 		size_reg = RS480_VA_SIZE_2GB;
 		break;
 	default:
 		return -EINVAL;
 	}
 	/* It should be fine to program it to max value */
 	if (rdev->family == CHIP_RS690 || (rdev->family == CHIP_RS740)) {
 		WREG32_MC(RS690_MCCFG_AGP_BASE, 0xFFFFFFFF);
 		WREG32_MC(RS690_MCCFG_AGP_BASE_2, 0);
 	} else {
 		WREG32(RADEON_AGP_BASE, 0xFFFFFFFF);
 		WREG32(RS480_AGP_BASE_2, 0);
 	}
 	tmp = REG_SET(RS690_MC_AGP_TOP, rdev->mc.gtt_end >> 16);
 	tmp |= REG_SET(RS690_MC_AGP_START, rdev->mc.gtt_start >> 16);
 	if ((rdev->family == CHIP_RS690) || (rdev->family == CHIP_RS740)) {
 		WREG32_MC(RS690_MCCFG_AGP_LOCATION, tmp);
 		tmp = RREG32(RADEON_BUS_CNTL) & ~RS600_BUS_MASTER_DIS;
 		WREG32(RADEON_BUS_CNTL, tmp);
 	} else {
 		WREG32(RADEON_MC_AGP_LOCATION, tmp);
 		tmp = RREG32(RADEON_BUS_CNTL) & ~RADEON_BUS_MASTER_DIS;
 		WREG32(RADEON_BUS_CNTL, tmp);
 	}
 	/* Table should be in 32bits address space so ignore bits above. */
 	tmp = (u32)rdev->gart.table_addr & 0xfffff000;
 	tmp |= (upper_32_bits(rdev->gart.table_addr) & 0xff) << 4;

 	WREG32_MC(RS480_GART_BASE, tmp);
 	/* TODO: more tweaking here */
 	WREG32_MC(RS480_GART_FEATURE_ID,
 		  (RS480_TLB_ENABLE |
 		   RS480_GTW_LAC_EN | RS480_1LEVEL_GART));
 	/* Disable snooping */
 	WREG32_MC(RS480_AGP_MODE_CNTL,
 		  (1 << RS480_REQ_TYPE_SNOOP_SHIFT) | RS480_REQ_TYPE_SNOOP_DIS);
 	/* Disable AGP mode */
 	/* FIXME: according to doc we should set HIDE_MMCFG_BAR=0,
 	 * AGPMODE30=0 & AGP30ENHANCED=0 in NB_CNTL */
 	if ((rdev->family == CHIP_RS690) || (rdev->family == CHIP_RS740)) {
 		tmp = RREG32_MC(RS480_MC_MISC_CNTL);
 		tmp |= RS480_GART_INDEX_REG_EN | RS690_BLOCK_GFX_D3_EN;
 		WREG32_MC(RS480_MC_MISC_CNTL, tmp);
 	} else {
 		tmp = RREG32_MC(RS480_MC_MISC_CNTL);
 		tmp |= RS480_GART_INDEX_REG_EN;
 		WREG32_MC(RS480_MC_MISC_CNTL, tmp);
 	}
 	/* Enable gart */
 	WREG32_MC(RS480_AGP_ADDRESS_SPACE_SIZE, (RS480_GART_EN | size_reg));
 	rs400_gart_tlb_flush(rdev);
 	DRM_INFO("PCIE GART of %uM enabled (table at 0x%016llX).\n",
 		 (unsigned)(rdev->mc.gtt_size >> 20),
 		 (unsigned long long)rdev->gart.table_addr);
 	rdev->gart.ready = true;
 	return 0;
 }

 void rs400_gart_disable(struct radeon_device *rdev)
 {
 	uint32_t tmp;

 	tmp = RREG32_MC(RS690_AIC_CTRL_SCRATCH);
 	tmp |= RS690_DIS_OUT_OF_PCI_GART_ACCESS;
 	WREG32_MC(RS690_AIC_CTRL_SCRATCH, tmp);
 	WREG32_MC(RS480_AGP_ADDRESS_SPACE_SIZE, 0);
 }

 void rs400_gart_fini(struct radeon_device *rdev)
 {
 	radeon_gart_fini(rdev);
 	rs400_gart_disable(rdev);
 	radeon_gart_table_ram_free(rdev);
 }

 #define RS400_PTE_WRITEABLE (1 << 2)
 #define RS400_PTE_READABLE  (1 << 3)

 int rs400_gart_set_page(struct radeon_device *rdev, int i, uint64_t addr)
 {
 	uint32_t entry;
 	u32 *gtt = rdev->gart.ptr;

 	if (i < 0 || i > rdev->gart.num_gpu_pages) {
 		return -EINVAL;
 	}

 	entry = (lower_32_bits(addr) & PAGE_MASK) |
 		((upper_32_bits(addr) & 0xff) << 4) |
 		RS400_PTE_WRITEABLE | RS400_PTE_READABLE;
 	entry = cpu_to_le32(entry);
 	gtt[i] = entry;
 	return 0;
 }

 int rs400_mc_wait_for_idle(struct radeon_device *rdev)
 {
 	unsigned i;
 	uint32_t tmp;

 	for (i = 0; i < rdev->usec_timeout; i++) {
 		/* read MC_STATUS */
 		tmp = RREG32(RADEON_MC_STATUS);
 		if (tmp & RADEON_MC_IDLE) {
 			return 0;
 		}
 		DRM_UDELAY(1);
 	}
 	return -1;
 }

 static void rs400_gpu_init(struct radeon_device *rdev)
 {
 	/* FIXME: is this correct ? */
 	r420_pipes_init(rdev);
 	if (rs400_mc_wait_for_idle(rdev)) {
 		printk(KERN_WARNING "rs400: Failed to wait MC idle while "
 		       "programming pipes. Bad things might happen. %08x\n", RREG32(RADEON_MC_STATUS));
 	}
 }

 static void rs400_mc_init(struct radeon_device *rdev)
 {
 	u64 base;

 	rs400_gart_adjust_size(rdev);
 	rdev->mc.igp_sideport_enabled = radeon_combios_sideport_present(rdev);
 	/* DDR for all card after R300 & IGP */
 	rdev->mc.vram_is_ddr = true;
 	rdev->mc.vram_width = 128;
 	r100_vram_init_sizes(rdev);
 	base = (RREG32(RADEON_NB_TOM) & 0xffff) << 16;
 	radeon_vram_location(rdev, &rdev->mc, base);
 	rdev->mc.gtt_base_align = rdev->mc.gtt_size - 1;
 	radeon_gtt_location(rdev, &rdev->mc);
 	radeon_update_bandwidth_info(rdev);
 }

 uint32_t rs400_mc_rreg(struct radeon_device *rdev, uint32_t reg)
 {
 	unsigned long flags;
 	uint32_t r;

 	spin_lock_irqsave(&rdev->mc_idx_lock, flags);
 	WREG32(RS480_NB_MC_INDEX, reg & 0xff);
 	r = RREG32(RS480_NB_MC_DATA);
 	WREG32(RS480_NB_MC_INDEX, 0xff);
 	spin_unlock_irqrestore(&rdev->mc_idx_lock, flags);
 	return r;
 }

 void rs400_mc_wreg(struct radeon_device *rdev, uint32_t reg, uint32_t v)
 {
 	unsigned long flags;

 	spin_lock_irqsave(&rdev->mc_idx_lock, flags);
 	WREG32(RS480_NB_MC_INDEX, ((reg) & 0xff) | RS480_NB_MC_IND_WR_EN);
 	WREG32(RS480_NB_MC_DATA, (v));
 	WREG32(RS480_NB_MC_INDEX, 0xff);
 	spin_unlock_irqrestore(&rdev->mc_idx_lock, flags);
 }

 #if defined(CONFIG_DEBUG_FS)
 static int rs400_debugfs_gart_info(struct seq_file *m, void *data)
 {
 	struct drm_info_node *node = (struct drm_info_node *) m->private;
 	struct drm_device *dev = node->minor->dev;
 	struct radeon_device *rdev = dev->dev_private;
 	uint32_t tmp;

 	tmp = RREG32(RADEON_HOST_PATH_CNTL);
 	seq_printf(m, "HOST_PATH_CNTL 0x%08x\n", tmp);
 	tmp = RREG32(RADEON_BUS_CNTL);
 	seq_printf(m, "BUS_CNTL 0x%08x\n", tmp);
 	tmp = RREG32_MC(RS690_AIC_CTRL_SCRATCH);
 	seq_printf(m, "AIC_CTRL_SCRATCH 0x%08x\n", tmp);
 	if (rdev->family == CHIP_RS690 || (rdev->family == CHIP_RS740)) {
 		tmp = RREG32_MC(RS690_MCCFG_AGP_BASE);
 		seq_printf(m, "MCCFG_AGP_BASE 0x%08x\n", tmp);
 		tmp = RREG32_MC(RS690_MCCFG_AGP_BASE_2);
 		seq_printf(m, "MCCFG_AGP_BASE_2 0x%08x\n", tmp);
 		tmp = RREG32_MC(RS690_MCCFG_AGP_LOCATION);
 		seq_printf(m, "MCCFG_AGP_LOCATION 0x%08x\n", tmp);
 		tmp = RREG32_MC(RS690_MCCFG_FB_LOCATION);
 		seq_printf(m, "MCCFG_FB_LOCATION 0x%08x\n", tmp);
 		tmp = RREG32(RS690_HDP_FB_LOCATION);
 		seq_printf(m, "HDP_FB_LOCATION 0x%08x\n", tmp);
 	} else {
 		tmp = RREG32(RADEON_AGP_BASE);
 		seq_printf(m, "AGP_BASE 0x%08x\n", tmp);
 		tmp = RREG32(RS480_AGP_BASE_2);
 		seq_printf(m, "AGP_BASE_2 0x%08x\n", tmp);
 		tmp = RREG32(RADEON_MC_AGP_LOCATION);
 		seq_printf(m, "MC_AGP_LOCATION 0x%08x\n", tmp);
 	}
 	tmp = RREG32_MC(RS480_GART_BASE);
 	seq_printf(m, "GART_BASE 0x%08x\n", tmp);
 	tmp = RREG32_MC(RS480_GART_FEATURE_ID);
 	seq_printf(m, "GART_FEATURE_ID 0x%08x\n", tmp);
 	tmp = RREG32_MC(RS480_AGP_MODE_CNTL);
 	seq_printf(m, "AGP_MODE_CONTROL 0x%08x\n", tmp);
 	tmp = RREG32_MC(RS480_MC_MISC_CNTL);
 	seq_printf(m, "MC_MISC_CNTL 0x%08x\n", tmp);
 	tmp = RREG32_MC(0x5F);
 	seq_printf(m, "MC_MISC_UMA_CNTL 0x%08x\n", tmp);
 	tmp = RREG32_MC(RS480_AGP_ADDRESS_SPACE_SIZE);
 	seq_printf(m, "AGP_ADDRESS_SPACE_SIZE 0x%08x\n", tmp);
 	tmp = RREG32_MC(RS480_GART_CACHE_CNTRL);
 	seq_printf(m, "GART_CACHE_CNTRL 0x%08x\n", tmp);
 	tmp = RREG32_MC(0x3B);
 	seq_printf(m, "MC_GART_ERROR_ADDRESS 0x%08x\n", tmp);
 	tmp = RREG32_MC(0x3C);
 	seq_printf(m, "MC_GART_ERROR_ADDRESS_HI 0x%08x\n", tmp);
 	tmp = RREG32_MC(0x30);
 	seq_printf(m, "GART_ERROR_0 0x%08x\n", tmp);
 	tmp = RREG32_MC(0x31);
 	seq_printf(m, "GART_ERROR_1 0x%08x\n", tmp);
 	tmp = RREG32_MC(0x32);
 	seq_printf(m, "GART_ERROR_2 0x%08x\n", tmp);
 	tmp = RREG32_MC(0x33);
 	seq_printf(m, "GART_ERROR_3 0x%08x\n", tmp);
 	tmp = RREG32_MC(0x34);
 	seq_printf(m, "GART_ERROR_4 0x%08x\n", tmp);
 	tmp = RREG32_MC(0x35);
 	seq_printf(m, "GART_ERROR_5 0x%08x\n", tmp);
 	tmp = RREG32_MC(0x36);
 	seq_printf(m, "GART_ERROR_6 0x%08x\n", tmp);
 	tmp = RREG32_MC(0x37);
 	seq_printf(m, "GART_ERROR_7 0x%08x\n", tmp);
 	return 0;
 }

 static struct drm_info_list rs400_gart_info_list[] = {
 	{"rs400_gart_info", rs400_debugfs_gart_info, 0, NULL},
 };
 #endif

 static int rs400_debugfs_pcie_gart_info_init(struct radeon_device *rdev)
 {
 #if defined(CONFIG_DEBUG_FS)
 	return radeon_debugfs_add_files(rdev, rs400_gart_info_list, 1);
 #else
 	return 0;
 #endif
 }

 static void rs400_mc_program(struct radeon_device *rdev)
 {
 	struct r100_mc_save save;

 	/* Stops all mc clients */
 	r100_mc_stop(rdev, &save);

 	/* Wait for mc idle */
 	if (rs400_mc_wait_for_idle(rdev))
 		dev_warn(rdev->dev, "rs400: Wait MC idle timeout before updating MC.\n");
 	WREG32(R_000148_MC_FB_LOCATION,
 		S_000148_MC_FB_START(rdev->mc.vram_start >> 16) |
 		S_000148_MC_FB_TOP(rdev->mc.vram_end >> 16));

 	r100_mc_resume(rdev, &save);
 }

 static int rs400_startup(struct radeon_device *rdev)
 {
 	int r;

 	r100_set_common_regs(rdev);

 	rs400_mc_program(rdev);
 	/* Resume clock */
 	r300_clock_startup(rdev);
 	/* Initialize GPU configuration (# pipes, ...) */
 	rs400_gpu_init(rdev);
 	r100_enable_bm(rdev);
 	/* Initialize GART (initialize after TTM so we can allocate
 	 * memory through TTM but finalize after TTM) */
 	r = rs400_gart_enable(rdev);
 	if (r)
 		return r;

 	/* allocate wb buffer */
 	r = radeon_wb_init(rdev);
 	if (r)
 		return r;

 	r = radeon_fence_driver_start_ring(rdev, RADEON_RING_TYPE_GFX_INDEX);
 	if (r) {
 		dev_err(rdev->dev, "failed initializing CP fences (%d).\n", r);
 		return r;
 	}

 	/* Enable IRQ */
 	if (!rdev->irq.installed) {
 		r = radeon_irq_kms_init(rdev);
 		if (r)
 			return r;
 	}

 	r100_irq_set(rdev);
 	rdev->config.r300.hdp_cntl = RREG32(RADEON_HOST_PATH_CNTL);
 	/* 1M ring buffer */
 	r = r100_cp_init(rdev, 1024 * 1024);
 	if (r) {
 		dev_err(rdev->dev, "failed initializing CP (%d).\n", r);
 		return r;
 	}

 	r = radeon_ib_pool_init(rdev);
 	if (r) {
 		dev_err(rdev->dev, "IB initialization failed (%d).\n", r);
 		return r;
 	}

 	return 0;
 }

 int rs400_resume(struct radeon_device *rdev)
 {
 	int r;

 	/* Make sur GART are not working */
 	rs400_gart_disable(rdev);
 	/* Resume clock before doing reset */
 	r300_clock_startup(rdev);
 	/* setup MC before calling post tables */
 	rs400_mc_program(rdev);
 	/* Reset gpu before posting otherwise ATOM will enter infinite loop */
 	if (radeon_asic_reset(rdev)) {
 		dev_warn(rdev->dev, "GPU reset failed ! (0xE40=0x%08X, 0x7C0=0x%08X)\n",
 			RREG32(R_000E40_RBBM_STATUS),
 			RREG32(R_0007C0_CP_STAT));
 	}
 	/* post */
 	radeon_combios_asic_init(rdev->ddev);
 	/* Resume clock after posting */
 	r300_clock_startup(rdev);
 	/* Initialize surface registers */
 	radeon_surface_init(rdev);

 	rdev->accel_working = true;
 	r = rs400_startup(rdev);
 	if (r) {
 		rdev->accel_working = false;
 	}
 	return r;
 }

 int rs400_suspend(struct radeon_device *rdev)
 {
 	radeon_pm_suspend(rdev);
 	r100_cp_disable(rdev);
 	radeon_wb_disable(rdev);
 	r100_irq_disable(rdev);
 	rs400_gart_disable(rdev);
 	return 0;
 }

 void rs400_fini(struct radeon_device *rdev)
 {
 	radeon_pm_fini(rdev);
 	r100_cp_fini(rdev);
 	radeon_wb_fini(rdev);
 	radeon_ib_pool_fini(rdev);
 	radeon_gem_fini(rdev);
 	rs400_gart_fini(rdev);
 	radeon_irq_kms_fini(rdev);
 	radeon_fence_driver_fini(rdev);
 	radeon_bo_fini(rdev);
 	radeon_atombios_fini(rdev);
 	kfree(rdev->bios);
 	rdev->bios = NULL;
 }

 int rs400_init(struct radeon_device *rdev)
 {
 	int r;

 	/* Disable VGA */
 	r100_vga_render_disable(rdev);
 	/* Initialize scratch registers */
 	radeon_scratch_init(rdev);
 	/* Initialize surface registers */
 	radeon_surface_init(rdev);
 	/* TODO: disable VGA need to use VGA request */
 	/* restore some register to sane defaults */
 	r100_restore_sanity(rdev);
 	/* BIOS*/
 	if (!radeon_get_bios(rdev)) {
 		if (ASIC_IS_AVIVO(rdev))
 			return -EINVAL;
 	}
 	if (rdev->is_atom_bios) {
 		dev_err(rdev->dev, "Expecting combios for RS400/RS480 GPU\n");
 		return -EINVAL;
 	} else {
 		r = radeon_combios_init(rdev);
 		if (r)
 			return r;
 	}
 	/* Reset gpu before posting otherwise ATOM will enter infinite loop */
 	if (radeon_asic_reset(rdev)) {
 		dev_warn(rdev->dev,
 			"GPU reset failed ! (0xE40=0x%08X, 0x7C0=0x%08X)\n",
 			RREG32(R_000E40_RBBM_STATUS),
 			RREG32(R_0007C0_CP_STAT));
 	}
 	/* check if cards are posted or not */
 	if (radeon_boot_test_post_card(rdev) == false)
 		return -EINVAL;

 	/* Initialize clocks */
 	radeon_get_clock_info(rdev->ddev);
 	/* initialize memory controller */
 	rs400_mc_init(rdev);
 	/* Fence driver */
 	r = radeon_fence_driver_init(rdev);
 	if (r)
 		return r;
 	/* Memory manager */
 	r = radeon_bo_init(rdev);
 	if (r)
 		return r;
 	r = rs400_gart_init(rdev);
 	if (r)
 		return r;
 	r300_set_reg_safe(rdev);

 	/* Initialize power management */
 	radeon_pm_init(rdev);

 	rdev->accel_working = true;
 	r = rs400_startup(rdev);
 	if (r) {
 		/* Somethings want wront with the accel init stop accel */
 		dev_err(rdev->dev, "Disabling GPU acceleration\n");
 		r100_cp_fini(rdev);
 		radeon_wb_fini(rdev);
 		radeon_ib_pool_fini(rdev);
 		rs400_gart_fini(rdev);
 		radeon_irq_kms_fini(rdev);
 		rdev->accel_working = false;
 	}
 	return 0;
 }
	/*
	* Copyright 2008 Advanced Micro Devices, Inc.
	* Copyright 2008 Red Hat Inc.
	* Copyright 2009 Jerome Glisse.
	*
	* Permission is hereby granted, free of charge, to any person obtaining a
	* copy of this software and associated documentation files (the "Software"),
	* to deal in the Software without restriction, including without limitation
	* the rights to use, copy, modify, merge, publish, distribute, sublicense,
	* and/or sell copies of the Software, and to permit persons to whom the
	* Software is furnished to do so, subject to the following conditions:
	*
	* The above copyright notice and this permission notice shall be included in
	* all copies or substantial portions of the Software.
	*
	* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
	* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
	* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
	* THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
	* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
	* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
	* OTHER DEALINGS IN THE SOFTWARE.
	*
	* Authors: Dave Airlie
	* Alex Deucher
	* Jerome Glisse
	*/
	#include <linux/seq_file.h>
	#include <linux/slab.h>
	#include <drm/drmP.h>
	#include "radeon.h"
	#include "radeon_asic.h"
	#include "rs400d.h"

	/* This files gather functions specifics to : rs400,rs480 */
	static int rs400_debugfs_pcie_gart_info_init(struct radeon_device *rdev);

	void rs400_gart_adjust_size(struct radeon_device *rdev)
	{
	/* Check gart size */
	switch (rdev->mc.gtt_size/(1024*1024)) {
	case 32:
	case 64:
	case 128:
	case 256:
	case 512:
	case 1024:
	case 2048:
	break;
	default:
	DRM_ERROR("Unable to use IGP GART size %uM\n",
	(unsigned)(rdev->mc.gtt_size >> 20));
	DRM_ERROR("Valid GART size for IGP are 32M,64M,128M,256M,512M,1G,2G\n");
	DRM_ERROR("Forcing to 32M GART size\n");
	rdev->mc.gtt_size = 32 * 1024 * 1024;
	return;
	}
	}

	void rs400_gart_tlb_flush(struct radeon_device *rdev)
	{
	uint32_t tmp;
	unsigned int timeout = rdev->usec_timeout;

	WREG32_MC(RS480_GART_CACHE_CNTRL, RS480_GART_CACHE_INVALIDATE);
	do {
	tmp = RREG32_MC(RS480_GART_CACHE_CNTRL);
	if ((tmp & RS480_GART_CACHE_INVALIDATE) == 0)
	break;
	DRM_UDELAY(1);
	timeout--;
	} while (timeout > 0);
	WREG32_MC(RS480_GART_CACHE_CNTRL, 0);
	}

	int rs400_gart_init(struct radeon_device *rdev)
	{
	int r;

	if (rdev->gart.ptr) {
	WARN(1, "RS400 GART already initialized\n");
	return 0;
	}
	/* Check gart size */
	switch(rdev->mc.gtt_size / (1024 * 1024)) {
	case 32:
	case 64:
	case 128:
	case 256:
	case 512:
	case 1024:
	case 2048:
	break;
	default:
	return -EINVAL;
	}
	/* Initialize common gart structure */
	r = radeon_gart_init(rdev);
	if (r)
	return r;
	if (rs400_debugfs_pcie_gart_info_init(rdev))
	DRM_ERROR("Failed to register debugfs file for RS400 GART !\n");
	rdev->gart.table_size = rdev->gart.num_gpu_pages * 4;
	return radeon_gart_table_ram_alloc(rdev);
	}

	int rs400_gart_enable(struct radeon_device *rdev)
	{
	uint32_t size_reg;
	uint32_t tmp;

	radeon_gart_restore(rdev);
	tmp = RREG32_MC(RS690_AIC_CTRL_SCRATCH);
	tmp \|= RS690_DIS_OUT_OF_PCI_GART_ACCESS;
	WREG32_MC(RS690_AIC_CTRL_SCRATCH, tmp);
	/* Check gart size */
	switch(rdev->mc.gtt_size / (1024 * 1024)) {
	case 32:
	size_reg = RS480_VA_SIZE_32MB;
	break;
	case 64:
	size_reg = RS480_VA_SIZE_64MB;
	break;
	case 128:
	size_reg = RS480_VA_SIZE_128MB;
	break;
	case 256:
	size_reg = RS480_VA_SIZE_256MB;
	break;
	case 512:
	size_reg = RS480_VA_SIZE_512MB;
	break;
	case 1024:
	size_reg = RS480_VA_SIZE_1GB;
	break;
	case 2048:
	size_reg = RS480_VA_SIZE_2GB;
	break;
	default:
	return -EINVAL;
	}
	/* It should be fine to program it to max value */
	if (rdev->family == CHIP_RS690 \|\| (rdev->family == CHIP_RS740)) {
	WREG32_MC(RS690_MCCFG_AGP_BASE, 0xFFFFFFFF);
	WREG32_MC(RS690_MCCFG_AGP_BASE_2, 0);
	} else {
	WREG32(RADEON_AGP_BASE, 0xFFFFFFFF);
	WREG32(RS480_AGP_BASE_2, 0);
	}
	tmp = REG_SET(RS690_MC_AGP_TOP, rdev->mc.gtt_end >> 16);
	tmp \|= REG_SET(RS690_MC_AGP_START, rdev->mc.gtt_start >> 16);
	if ((rdev->family == CHIP_RS690) \|\| (rdev->family == CHIP_RS740)) {
	WREG32_MC(RS690_MCCFG_AGP_LOCATION, tmp);
	tmp = RREG32(RADEON_BUS_CNTL) & ~RS600_BUS_MASTER_DIS;
	WREG32(RADEON_BUS_CNTL, tmp);
	} else {
	WREG32(RADEON_MC_AGP_LOCATION, tmp);
	tmp = RREG32(RADEON_BUS_CNTL) & ~RADEON_BUS_MASTER_DIS;
	WREG32(RADEON_BUS_CNTL, tmp);
	}
	/* Table should be in 32bits address space so ignore bits above. */
	tmp = (u32)rdev->gart.table_addr & 0xfffff000;
	tmp \|= (upper_32_bits(rdev->gart.table_addr) & 0xff) << 4;

	WREG32_MC(RS480_GART_BASE, tmp);
	/* TODO: more tweaking here */
	WREG32_MC(RS480_GART_FEATURE_ID,
	(RS480_TLB_ENABLE \|
	RS480_GTW_LAC_EN \| RS480_1LEVEL_GART));
	/* Disable snooping */
	WREG32_MC(RS480_AGP_MODE_CNTL,
	(1 << RS480_REQ_TYPE_SNOOP_SHIFT) \| RS480_REQ_TYPE_SNOOP_DIS);
	/* Disable AGP mode */
	/* FIXME: according to doc we should set HIDE_MMCFG_BAR=0,
	* AGPMODE30=0 & AGP30ENHANCED=0 in NB_CNTL */
	if ((rdev->family == CHIP_RS690) \|\| (rdev->family == CHIP_RS740)) {
	tmp = RREG32_MC(RS480_MC_MISC_CNTL);
	tmp \|= RS480_GART_INDEX_REG_EN \| RS690_BLOCK_GFX_D3_EN;
	WREG32_MC(RS480_MC_MISC_CNTL, tmp);
	} else {
	tmp = RREG32_MC(RS480_MC_MISC_CNTL);
	tmp \|= RS480_GART_INDEX_REG_EN;
	WREG32_MC(RS480_MC_MISC_CNTL, tmp);
	}
	/* Enable gart */
	WREG32_MC(RS480_AGP_ADDRESS_SPACE_SIZE, (RS480_GART_EN \| size_reg));
	rs400_gart_tlb_flush(rdev);
	DRM_INFO("PCIE GART of %uM enabled (table at 0x%016llX).\n",
	(unsigned)(rdev->mc.gtt_size >> 20),
	(unsigned long long)rdev->gart.table_addr);
	rdev->gart.ready = true;
	return 0;
	}

	void rs400_gart_disable(struct radeon_device *rdev)
	{
	uint32_t tmp;

	tmp = RREG32_MC(RS690_AIC_CTRL_SCRATCH);
	tmp \|= RS690_DIS_OUT_OF_PCI_GART_ACCESS;
	WREG32_MC(RS690_AIC_CTRL_SCRATCH, tmp);
	WREG32_MC(RS480_AGP_ADDRESS_SPACE_SIZE, 0);
	}

	void rs400_gart_fini(struct radeon_device *rdev)
	{
	radeon_gart_fini(rdev);
	rs400_gart_disable(rdev);
	radeon_gart_table_ram_free(rdev);
	}

	#define RS400_PTE_WRITEABLE (1 << 2)
	#define RS400_PTE_READABLE (1 << 3)

	int rs400_gart_set_page(struct radeon_device *rdev, int i, uint64_t addr)
	{
	uint32_t entry;
	u32 *gtt = rdev->gart.ptr;

	if (i < 0 \|\| i > rdev->gart.num_gpu_pages) {
	return -EINVAL;
	}

	entry = (lower_32_bits(addr) & PAGE_MASK) \|
	((upper_32_bits(addr) & 0xff) << 4) \|
	RS400_PTE_WRITEABLE \| RS400_PTE_READABLE;
	entry = cpu_to_le32(entry);
	gtt[i] = entry;
	return 0;
	}

	int rs400_mc_wait_for_idle(struct radeon_device *rdev)
	{
	unsigned i;
	uint32_t tmp;

	for (i = 0; i < rdev->usec_timeout; i++) {
	/* read MC_STATUS */
	tmp = RREG32(RADEON_MC_STATUS);
	if (tmp & RADEON_MC_IDLE) {
	return 0;
	}
	DRM_UDELAY(1);
	}
	return -1;
	}

	static void rs400_gpu_init(struct radeon_device *rdev)
	{
	/* FIXME: is this correct ? */
	r420_pipes_init(rdev);
	if (rs400_mc_wait_for_idle(rdev)) {
	printk(KERN_WARNING "rs400: Failed to wait MC idle while "
	"programming pipes. Bad things might happen. %08x\n", RREG32(RADEON_MC_STATUS));
	}
	}

	static void rs400_mc_init(struct radeon_device *rdev)
	{
	u64 base;

	rs400_gart_adjust_size(rdev);
	rdev->mc.igp_sideport_enabled = radeon_combios_sideport_present(rdev);
	/* DDR for all card after R300 & IGP */
	rdev->mc.vram_is_ddr = true;
	rdev->mc.vram_width = 128;
	r100_vram_init_sizes(rdev);
	base = (RREG32(RADEON_NB_TOM) & 0xffff) << 16;
	radeon_vram_location(rdev, &rdev->mc, base);
	rdev->mc.gtt_base_align = rdev->mc.gtt_size - 1;
	radeon_gtt_location(rdev, &rdev->mc);
	radeon_update_bandwidth_info(rdev);
	}

	uint32_t rs400_mc_rreg(struct radeon_device *rdev, uint32_t reg)
	{
	unsigned long flags;
	uint32_t r;

	spin_lock_irqsave(&rdev->mc_idx_lock, flags);
	WREG32(RS480_NB_MC_INDEX, reg & 0xff);
	r = RREG32(RS480_NB_MC_DATA);
	WREG32(RS480_NB_MC_INDEX, 0xff);
	spin_unlock_irqrestore(&rdev->mc_idx_lock, flags);
	return r;
	}

	void rs400_mc_wreg(struct radeon_device *rdev, uint32_t reg, uint32_t v)
	{
	unsigned long flags;

	spin_lock_irqsave(&rdev->mc_idx_lock, flags);
	WREG32(RS480_NB_MC_INDEX, ((reg) & 0xff) \| RS480_NB_MC_IND_WR_EN);
	WREG32(RS480_NB_MC_DATA, (v));
	WREG32(RS480_NB_MC_INDEX, 0xff);
	spin_unlock_irqrestore(&rdev->mc_idx_lock, flags);
	}

	#if defined(CONFIG_DEBUG_FS)
	static int rs400_debugfs_gart_info(struct seq_file m, void data)
	{
	struct drm_info_node node = (struct drm_info_node ) m->private;
	struct drm_device *dev = node->minor->dev;
	struct radeon_device *rdev = dev->dev_private;
	uint32_t tmp;

	tmp = RREG32(RADEON_HOST_PATH_CNTL);
	seq_printf(m, "HOST_PATH_CNTL 0x%08x\n", tmp);
	tmp = RREG32(RADEON_BUS_CNTL);
	seq_printf(m, "BUS_CNTL 0x%08x\n", tmp);
	tmp = RREG32_MC(RS690_AIC_CTRL_SCRATCH);
	seq_printf(m, "AIC_CTRL_SCRATCH 0x%08x\n", tmp);
	if (rdev->family == CHIP_RS690 \|\| (rdev->family == CHIP_RS740)) {
	tmp = RREG32_MC(RS690_MCCFG_AGP_BASE);
	seq_printf(m, "MCCFG_AGP_BASE 0x%08x\n", tmp);
	tmp = RREG32_MC(RS690_MCCFG_AGP_BASE_2);
	seq_printf(m, "MCCFG_AGP_BASE_2 0x%08x\n", tmp);
	tmp = RREG32_MC(RS690_MCCFG_AGP_LOCATION);
	seq_printf(m, "MCCFG_AGP_LOCATION 0x%08x\n", tmp);
	tmp = RREG32_MC(RS690_MCCFG_FB_LOCATION);
	seq_printf(m, "MCCFG_FB_LOCATION 0x%08x\n", tmp);
	tmp = RREG32(RS690_HDP_FB_LOCATION);
	seq_printf(m, "HDP_FB_LOCATION 0x%08x\n", tmp);
	} else {
	tmp = RREG32(RADEON_AGP_BASE);
	seq_printf(m, "AGP_BASE 0x%08x\n", tmp);
	tmp = RREG32(RS480_AGP_BASE_2);
	seq_printf(m, "AGP_BASE_2 0x%08x\n", tmp);
	tmp = RREG32(RADEON_MC_AGP_LOCATION);
	seq_printf(m, "MC_AGP_LOCATION 0x%08x\n", tmp);
	}
	tmp = RREG32_MC(RS480_GART_BASE);
	seq_printf(m, "GART_BASE 0x%08x\n", tmp);
	tmp = RREG32_MC(RS480_GART_FEATURE_ID);
	seq_printf(m, "GART_FEATURE_ID 0x%08x\n", tmp);
	tmp = RREG32_MC(RS480_AGP_MODE_CNTL);
	seq_printf(m, "AGP_MODE_CONTROL 0x%08x\n", tmp);
	tmp = RREG32_MC(RS480_MC_MISC_CNTL);
	seq_printf(m, "MC_MISC_CNTL 0x%08x\n", tmp);
	tmp = RREG32_MC(0x5F);
	seq_printf(m, "MC_MISC_UMA_CNTL 0x%08x\n", tmp);
	tmp = RREG32_MC(RS480_AGP_ADDRESS_SPACE_SIZE);
	seq_printf(m, "AGP_ADDRESS_SPACE_SIZE 0x%08x\n", tmp);
	tmp = RREG32_MC(RS480_GART_CACHE_CNTRL);
	seq_printf(m, "GART_CACHE_CNTRL 0x%08x\n", tmp);
	tmp = RREG32_MC(0x3B);
	seq_printf(m, "MC_GART_ERROR_ADDRESS 0x%08x\n", tmp);
	tmp = RREG32_MC(0x3C);
	seq_printf(m, "MC_GART_ERROR_ADDRESS_HI 0x%08x\n", tmp);
	tmp = RREG32_MC(0x30);
	seq_printf(m, "GART_ERROR_0 0x%08x\n", tmp);
	tmp = RREG32_MC(0x31);
	seq_printf(m, "GART_ERROR_1 0x%08x\n", tmp);
	tmp = RREG32_MC(0x32);
	seq_printf(m, "GART_ERROR_2 0x%08x\n", tmp);
	tmp = RREG32_MC(0x33);
	seq_printf(m, "GART_ERROR_3 0x%08x\n", tmp);
	tmp = RREG32_MC(0x34);
	seq_printf(m, "GART_ERROR_4 0x%08x\n", tmp);
	tmp = RREG32_MC(0x35);
	seq_printf(m, "GART_ERROR_5 0x%08x\n", tmp);
	tmp = RREG32_MC(0x36);
	seq_printf(m, "GART_ERROR_6 0x%08x\n", tmp);
	tmp = RREG32_MC(0x37);
	seq_printf(m, "GART_ERROR_7 0x%08x\n", tmp);
	return 0;
	}

	static struct drm_info_list rs400_gart_info_list[] = {
	{"rs400_gart_info", rs400_debugfs_gart_info, 0, NULL},
	};
	#endif

	static int rs400_debugfs_pcie_gart_info_init(struct radeon_device *rdev)
	{
	#if defined(CONFIG_DEBUG_FS)
	return radeon_debugfs_add_files(rdev, rs400_gart_info_list, 1);
	#else
	return 0;
	#endif
	}

	static void rs400_mc_program(struct radeon_device *rdev)
	{
	struct r100_mc_save save;

	/* Stops all mc clients */
	r100_mc_stop(rdev, &save);

	/* Wait for mc idle */
	if (rs400_mc_wait_for_idle(rdev))
	dev_warn(rdev->dev, "rs400: Wait MC idle timeout before updating MC.\n");
	WREG32(R_000148_MC_FB_LOCATION,
	S_000148_MC_FB_START(rdev->mc.vram_start >> 16) \|
	S_000148_MC_FB_TOP(rdev->mc.vram_end >> 16));

	r100_mc_resume(rdev, &save);
	}

	static int rs400_startup(struct radeon_device *rdev)
	{
	int r;

	r100_set_common_regs(rdev);

	rs400_mc_program(rdev);
	/* Resume clock */
	r300_clock_startup(rdev);
	/* Initialize GPU configuration (# pipes, ...) */
	rs400_gpu_init(rdev);
	r100_enable_bm(rdev);
	/* Initialize GART (initialize after TTM so we can allocate
	* memory through TTM but finalize after TTM) */
	r = rs400_gart_enable(rdev);
	if (r)
	return r;

	/* allocate wb buffer */
	r = radeon_wb_init(rdev);
	if (r)
	return r;

	r = radeon_fence_driver_start_ring(rdev, RADEON_RING_TYPE_GFX_INDEX);
	if (r) {
	dev_err(rdev->dev, "failed initializing CP fences (%d).\n", r);
	return r;
	}

	/* Enable IRQ */
	if (!rdev->irq.installed) {
	r = radeon_irq_kms_init(rdev);
	if (r)
	return r;
	}

	r100_irq_set(rdev);
	rdev->config.r300.hdp_cntl = RREG32(RADEON_HOST_PATH_CNTL);
	/* 1M ring buffer */
	r = r100_cp_init(rdev, 1024 * 1024);
	if (r) {
	dev_err(rdev->dev, "failed initializing CP (%d).\n", r);
	return r;
	}

	r = radeon_ib_pool_init(rdev);
	if (r) {
	dev_err(rdev->dev, "IB initialization failed (%d).\n", r);
	return r;
	}

	return 0;
	}

	int rs400_resume(struct radeon_device *rdev)
	{
	int r;

	/* Make sur GART are not working */
	rs400_gart_disable(rdev);
	/* Resume clock before doing reset */
	r300_clock_startup(rdev);
	/* setup MC before calling post tables */
	rs400_mc_program(rdev);
	/* Reset gpu before posting otherwise ATOM will enter infinite loop */
	if (radeon_asic_reset(rdev)) {
	dev_warn(rdev->dev, "GPU reset failed ! (0xE40=0x%08X, 0x7C0=0x%08X)\n",
	RREG32(R_000E40_RBBM_STATUS),
	RREG32(R_0007C0_CP_STAT));
	}
	/* post */
	radeon_combios_asic_init(rdev->ddev);
	/* Resume clock after posting */
	r300_clock_startup(rdev);
	/* Initialize surface registers */
	radeon_surface_init(rdev);

	rdev->accel_working = true;
	r = rs400_startup(rdev);
	if (r) {
	rdev->accel_working = false;
	}
	return r;
	}

	int rs400_suspend(struct radeon_device *rdev)
	{
	radeon_pm_suspend(rdev);
	r100_cp_disable(rdev);
	radeon_wb_disable(rdev);
	r100_irq_disable(rdev);
	rs400_gart_disable(rdev);
	return 0;
	}

	void rs400_fini(struct radeon_device *rdev)
	{
	radeon_pm_fini(rdev);
	r100_cp_fini(rdev);
	radeon_wb_fini(rdev);
	radeon_ib_pool_fini(rdev);
	radeon_gem_fini(rdev);
	rs400_gart_fini(rdev);
	radeon_irq_kms_fini(rdev);
	radeon_fence_driver_fini(rdev);
	radeon_bo_fini(rdev);
	radeon_atombios_fini(rdev);
	kfree(rdev->bios);
	rdev->bios = NULL;
	}

	int rs400_init(struct radeon_device *rdev)
	{
	int r;

	/* Disable VGA */
	r100_vga_render_disable(rdev);
	/* Initialize scratch registers */
	radeon_scratch_init(rdev);
	/* Initialize surface registers */
	radeon_surface_init(rdev);
	/* TODO: disable VGA need to use VGA request */
	/* restore some register to sane defaults */
	r100_restore_sanity(rdev);
	/* BIOS*/
	if (!radeon_get_bios(rdev)) {
	if (ASIC_IS_AVIVO(rdev))
	return -EINVAL;
	}
	if (rdev->is_atom_bios) {
	dev_err(rdev->dev, "Expecting combios for RS400/RS480 GPU\n");
	return -EINVAL;
	} else {
	r = radeon_combios_init(rdev);
	if (r)
	return r;
	}
	/* Reset gpu before posting otherwise ATOM will enter infinite loop */
	if (radeon_asic_reset(rdev)) {
	dev_warn(rdev->dev,
	"GPU reset failed ! (0xE40=0x%08X, 0x7C0=0x%08X)\n",
	RREG32(R_000E40_RBBM_STATUS),
	RREG32(R_0007C0_CP_STAT));
	}
	/* check if cards are posted or not */
	if (radeon_boot_test_post_card(rdev) == false)
	return -EINVAL;

	/* Initialize clocks */
	radeon_get_clock_info(rdev->ddev);
	/* initialize memory controller */
	rs400_mc_init(rdev);
	/* Fence driver */
	r = radeon_fence_driver_init(rdev);
	if (r)
	return r;
	/* Memory manager */
	r = radeon_bo_init(rdev);
	if (r)
	return r;
	r = rs400_gart_init(rdev);
	if (r)
	return r;
	r300_set_reg_safe(rdev);

	/* Initialize power management */
	radeon_pm_init(rdev);

	rdev->accel_working = true;
	r = rs400_startup(rdev);
	if (r) {
	/* Somethings want wront with the accel init stop accel */
	dev_err(rdev->dev, "Disabling GPU acceleration\n");
	r100_cp_fini(rdev);
	radeon_wb_fini(rdev);
	radeon_ib_pool_fini(rdev);
	rs400_gart_fini(rdev);
	radeon_irq_kms_fini(rdev);
	rdev->accel_working = false;
	}
	return 0;
	}