diff options
Diffstat (limited to 'drivers/gpu/drm/emgd/emgd/core/init/cmn/igd_gtt_init.c')
| -rw-r--r-- | drivers/gpu/drm/emgd/emgd/core/init/cmn/igd_gtt_init.c | 249 |
1 files changed, 0 insertions, 249 deletions
diff --git a/drivers/gpu/drm/emgd/emgd/core/init/cmn/igd_gtt_init.c b/drivers/gpu/drm/emgd/emgd/core/init/cmn/igd_gtt_init.c deleted file mode 100644 index 0e97f8be57ed..000000000000 --- a/drivers/gpu/drm/emgd/emgd/core/init/cmn/igd_gtt_init.c +++ /dev/null @@ -1,249 +0,0 @@ -/* -*- pse-c -*- - *----------------------------------------------------------------------------- - * Filename: igd_gtt_init.c - * $Revision: 1.3 $ - *----------------------------------------------------------------------------- - * Copyright © 2002-2010, Intel Corporation. - * - * This program is free software; you can redistribute it and/or modify it - * under the terms and conditions of the GNU General Public License, - * version 2, as published by the Free Software Foundation. - * - * This program is distributed in the hope 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. - * - *----------------------------------------------------------------------------- - * Description: - * Initialize the GTT - *----------------------------------------------------------------------------- - */ -#include <igd_debug.h> -#include <igd_init.h> -#include <drmP.h> -#include <io.h> -#include <memory.h> -#include <context.h> -#include <asm/cacheflush.h> - -#define PFX "EMGD: " - -#define SCR1 0x71410 /* scratch register set by vbios indicating status*/ -#define SCR2 0x71418 /* scratch register set by vbios indicating amount of stolen memory */ -#define FW_ID 0xE1DF0000 /* firmware identifier */ -#define ST_BIT 0x00000004 /* bit2- stolen memory bit */ -#define PSB_GMCH_CTRL 0x52 -#define PSB_GMCH_ENABLED 0x04 -#define PSB_PGETBL_CTL 0x00002020 -#define PSB_PGETBL_ENABLED 0x00000001 -#define PSB_GATT_RESOURCE 2 -#define PSB_GTT_RESOURCE 3 -#define PSB_BSM 0x5c -#define PSB_PTE_VALID 0x0001 - - -/* - * GTT shutdown. - * - * Unmap the GTT mapping that was done during init time. - */ -void igd_gtt_shutdown(igd_context_t *context) -{ - if (context->device_context.virt_gttadr) { - iounmap(context->device_context.virt_gttadr); - - context->device_context.virt_gttadr = NULL; - } -} - - -/* - * Initialize the GTT. - * - Find the size of stolen memory - * - Add stolen memory to the GTT - * - Map the GTT and video memory - */ - -void igd_gtt_init(igd_context_t *context) -{ - struct drm_device *dev; - unsigned char *mmio = context->device_context.virt_mmadr; - unsigned long dvmt_mode = 0; - unsigned long gtt_pages = 0; - unsigned long stolen_mem_size = 0; - unsigned long scratch; - unsigned long base; - unsigned long pte; - unsigned short gmch_ctl; - unsigned long pge_ctl; - unsigned long gtt_phys_start; - unsigned long gatt_start; - unsigned long gatt_pages; - unsigned long gtt_start; - unsigned long gtt_order; - unsigned long stolen_mem_base; - unsigned long *gtt_table; - int gtt_enabled = FALSE; - struct page *gtt_table_page; - int i; - - dev = (struct drm_device *)context->drm_dev; - - /* Enable the GMCH */ - OS_PCI_READ_CONFIG_16((os_pci_dev_t)dev->pdev, PSB_GMCH_CTRL, - &gmch_ctl); - OS_PCI_WRITE_CONFIG_16((os_pci_dev_t)dev->pdev, PSB_GMCH_CTRL, - (gmch_ctl | PSB_GMCH_ENABLED)); - context->device_context.gmch_ctl = gmch_ctl; - - /* Get the page table control register */ - pge_ctl = readl(mmio + PSB_PGETBL_CTL); - gtt_phys_start = pge_ctl & PAGE_MASK; - - gtt_enabled = pge_ctl & PSB_PGETBL_ENABLED; - - /* Create a scratch page to initialize empty GTT entries */ - context->device_context.scratch_page = alloc_page(GFP_DMA32 | __GFP_ZERO); - - /* - * Is pci_resource_start(dev->pdev, PSB_GATT_RESOURCE); the same - * as pci_read_config_dword(dev->pdev, 0x1C, &value)? - * - * PSB_GATT_RESOURCE length is the amount of memory addressable - * by the GTT table. - */ - gatt_start = pci_resource_start(dev->pdev, PSB_GATT_RESOURCE); - gatt_pages = (pci_resource_len(dev->pdev, PSB_GATT_RESOURCE) >> PAGE_SHIFT); - context->device_context.gatt_pages = gatt_pages; - - /* - * The GTT wasn't set up by the vBios - */ - if (!gtt_enabled) { - context->device_context.stolen_pages = 0; - - gtt_pages = pci_resource_len(dev->pdev, PSB_GTT_RESOURCE) >> PAGE_SHIFT; - gtt_order = get_order(gtt_pages << PAGE_SHIFT); - gtt_table = (unsigned long *)__get_free_pages(GFP_KERNEL, gtt_order); - /* Make sure allocation was successful */ - if (NULL == gtt_table) { - EMGD_ERROR("Failed to allocate kernel pages for GTT"); - return; - } - context->device_context.virt_gttadr = gtt_table; - - for (i=0; i < (1 << gtt_order); i++) { - gtt_table_page = virt_to_page(gtt_table + (PAGE_SIZE * i)); - EMGD_DEBUG("Setting reserved bit on %p", gtt_table_page); - set_bit(PG_reserved, >t_table_page->flags); - } - - gtt_phys_start = virt_to_phys(gtt_table); - - for (i = 0; i < gtt_pages; i++) { - gtt_table[i] = (unsigned long)context->device_context.scratch_page; - } - - printk(KERN_INFO "Detected GTT was not enabled by firmware"); - printk(KERN_INFO "GMMADR(region 0) start: 0x%08lx (%ldM).\n", - gatt_start, (gatt_pages / 256)); - printk(KERN_INFO "GTTADR(region 3) start: 0x%08lx (can map %ldM RAM), and " - "actual RAM base 0x%08lx.\n", - (unsigned long)gtt_table, (gtt_pages * 4), gtt_phys_start); - - /* Enable the newly created GTT */ - EMGD_DEBUG("Enabling new GTT"); - writel((gtt_phys_start|PSB_PGETBL_ENABLED), mmio + PSB_PGETBL_CTL); - pge_ctl = readl(mmio + PSB_PGETBL_CTL); - - } else { - - /* - * Get the start address of the GTT page table - * - * In full_config_vga, this is done differently. The address is read - * from pcidev0's pci config space, at TNC_PCI_GTTADR and the size comes - * from TNC_OFFSET_VGA_MSAC. The value read for size is a size id - * 1 = 128, 2 = 256, 3 = 512 - * emgd_gtt->gtt_start = OS_PCI_READ_CONFIG_32( - * context->platform_context->pcidev0, TNC_PCI_GTTADDR) - * gtt_pages = OS_PCI_READ_CONFIG_8(context->platform_context->pcidev0, - * TNC_OFFSET_VGA_MSAC) * 1024; - * - * PSB_GTT_RESOURCE length is the size of the GTT table. Thus, - * gtt_pages is the number of pages that make up the table. - */ - gtt_start = pci_resource_start(dev->pdev, PSB_GTT_RESOURCE); - gtt_pages = (pci_resource_len(dev->pdev, PSB_GTT_RESOURCE) >> PAGE_SHIFT); - - /* Get stolen memory configuration. */ - pci_read_config_dword(dev->pdev, PSB_BSM, (u32 *)&stolen_mem_base); - stolen_mem_size = gtt_phys_start - stolen_mem_base - PAGE_SIZE; - - /* Display useful information in the kernel log */ - printk(KERN_INFO "GMMADR(region 0) start: 0x%08lx (%ldM).\n", - gatt_start, (gatt_pages / 256)); - printk(KERN_INFO "GTTADR(region 3) start: 0x%08lx (can map %ldM RAM), and " - "actual RAM base 0x%08lx.\n", - gtt_start, (gtt_pages * 4), gtt_phys_start); - printk(KERN_INFO "Stolen memory information \n"); - printk(KERN_INFO " base in RAM: 0x%lx \n", stolen_mem_base); - printk(KERN_INFO " size: %luK, calculated by (GTT RAM base) - " - "(Stolen base)\n", (stolen_mem_size / 1024)); - dvmt_mode = (gmch_ctl >> 4) & 0x7; - printk(KERN_INFO " size: %dM (dvmt mode=%ld)\n", - (dvmt_mode == 1) ? 1 : (2 << (dvmt_mode - 1)), dvmt_mode); - - context->device_context.virt_gttadr = - ioremap_nocache(gtt_start, gtt_pages << PAGE_SHIFT); - - if (!context->device_context.virt_gttadr) { - printk(KERN_ERR "Failed to map the GTT.\n"); - /* TODO: Clean up somelthing here */ - return; - } - - /* Insert stolen memory pages into the beginning of GTT */ - base = stolen_mem_base >> PAGE_SHIFT; - context->device_context.stolen_pages = stolen_mem_size >> PAGE_SHIFT; - - printk(KERN_INFO "Set up %ld stolen pages starting at 0x%08lx, " - "GTT offset %dK\n", context->device_context.stolen_pages, base, 0); - - for (i = 0; i < context->device_context.stolen_pages; i++) { - pte = ((base + i) << PAGE_SHIFT) | PSB_PTE_VALID; - writel(pte, context->device_context.virt_gttadr + i); - } - - } - - /* Update the scratch registers to say we have no stolen memory */ - scratch = readl(mmio + SCR1); - if ((scratch & FW_ID) == FW_ID) { - /* if an EMGD vBios modify only the stolen memory bit */ - scratch |= ST_BIT; - writel(scratch, mmio + SCR1); - } else { - /* Not an EMGD vBios so just set the entire register to a known value */ - writel((FW_ID|ST_BIT), mmio + SCR1); - } - - /* - * Report back that there is 0MB of stolen memory regardless of - * what was really in there. Fresh pages will be inserted over - * the top of the existing stolen memory. - */ - writel(0, mmio + SCR2); - - /* - * FIXME: Shouldn't this fill in all the GTT page table entries with - * the scratch page? - */ - - return; -} |