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  1. /*
  2.  * Copyright 2008 Advanced Micro Devices, Inc.
  3.  * Copyright 2008 Red Hat Inc.
  4.  * Copyright 2009 Jerome Glisse.
  5.  *
  6.  * Permission is hereby granted, free of charge, to any person obtaining a
  7.  * copy of this software and associated documentation files (the "Software"),
  8.  * to deal in the Software without restriction, including without limitation
  9.  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
  10.  * and/or sell copies of the Software, and to permit persons to whom the
  11.  * Software is furnished to do so, subject to the following conditions:
  12.  *
  13.  * The above copyright notice and this permission notice shall be included in
  14.  * all copies or substantial portions of the Software.
  15.  *
  16.  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  17.  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  18.  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  19.  * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
  20.  * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
  21.  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
  22.  * OTHER DEALINGS IN THE SOFTWARE.
  23.  *
  24.  * Authors: Dave Airlie
  25.  *          Alex Deucher
  26.  *          Jerome Glisse
  27.  */
  28. #include "drmP.h"
  29. #include "radeon_reg.h"
  30. #include "radeon.h"
  31.  
  32. /* r600,rv610,rv630,rv620,rv635,rv670 depends on : */
  33. void rs600_mc_disable_clients(struct radeon_device *rdev);
  34.  
  35. /* This files gather functions specifics to:
  36.  * r600,rv610,rv630,rv620,rv635,rv670
  37.  *
  38.  * Some of these functions might be used by newer ASICs.
  39.  */
  40. int r600_mc_wait_for_idle(struct radeon_device *rdev);
  41. void r600_gpu_init(struct radeon_device *rdev);
  42.  
  43.  
  44. /*
  45.  * MC
  46.  */
  47. int r600_mc_init(struct radeon_device *rdev)
  48. {
  49.         uint32_t tmp;
  50.  
  51.         r600_gpu_init(rdev);
  52.  
  53.         /* setup the gart before changing location so we can ask to
  54.          * discard unmapped mc request
  55.          */
  56.         /* FIXME: disable out of gart access */
  57.         tmp = rdev->mc.gtt_location / 4096;
  58.         tmp = REG_SET(R600_LOGICAL_PAGE_NUMBER, tmp);
  59.         WREG32(R600_MC_VM_SYSTEM_APERTURE_LOW_ADDR, tmp);
  60.         tmp = (rdev->mc.gtt_location + rdev->mc.gtt_size) / 4096;
  61.         tmp = REG_SET(R600_LOGICAL_PAGE_NUMBER, tmp);
  62.         WREG32(R600_MC_VM_SYSTEM_APERTURE_HIGH_ADDR, tmp);
  63.  
  64.         rs600_mc_disable_clients(rdev);
  65.         if (r600_mc_wait_for_idle(rdev)) {
  66.                 printk(KERN_WARNING "Failed to wait MC idle while "
  67.                        "programming pipes. Bad things might happen.\n");
  68.         }
  69.  
  70.         tmp = rdev->mc.vram_location + rdev->mc.mc_vram_size - 1;
  71.         tmp = REG_SET(R600_MC_FB_TOP, tmp >> 24);
  72.         tmp |= REG_SET(R600_MC_FB_BASE, rdev->mc.vram_location >> 24);
  73.         WREG32(R600_MC_VM_FB_LOCATION, tmp);
  74.         tmp = rdev->mc.gtt_location + rdev->mc.gtt_size - 1;
  75.         tmp = REG_SET(R600_MC_AGP_TOP, tmp >> 22);
  76.         WREG32(R600_MC_VM_AGP_TOP, tmp);
  77.         tmp = REG_SET(R600_MC_AGP_BOT, rdev->mc.gtt_location >> 22);
  78.         WREG32(R600_MC_VM_AGP_BOT, tmp);
  79.         return 0;
  80. }
  81.  
  82. void r600_mc_fini(struct radeon_device *rdev)
  83. {
  84.         /* FIXME: implement */
  85. }
  86.  
  87.  
  88. /*
  89.  * Global GPU functions
  90.  */
  91. void r600_errata(struct radeon_device *rdev)
  92. {
  93.         rdev->pll_errata = 0;
  94. }
  95.  
  96. int r600_mc_wait_for_idle(struct radeon_device *rdev)
  97. {
  98.         /* FIXME: implement */
  99.         return 0;
  100. }
  101.  
  102. void r600_gpu_init(struct radeon_device *rdev)
  103. {
  104.         /* FIXME: implement */
  105. }
  106.  
  107.  
  108. /*
  109.  * VRAM info
  110.  */
  111. void r600_vram_get_type(struct radeon_device *rdev)
  112. {
  113.         uint32_t tmp;
  114.         int chansize;
  115.  
  116.         rdev->mc.vram_width = 128;
  117.         rdev->mc.vram_is_ddr = true;
  118.  
  119.         tmp = RREG32(R600_RAMCFG);
  120.         if (tmp & R600_CHANSIZE_OVERRIDE) {
  121.                 chansize = 16;
  122.         } else if (tmp & R600_CHANSIZE) {
  123.                 chansize = 64;
  124.         } else {
  125.                 chansize = 32;
  126.         }
  127.         if (rdev->family == CHIP_R600) {
  128.                 rdev->mc.vram_width = 8 * chansize;
  129.         } else if (rdev->family == CHIP_RV670) {
  130.                 rdev->mc.vram_width = 4 * chansize;
  131.         } else if ((rdev->family == CHIP_RV610) ||
  132.                         (rdev->family == CHIP_RV620)) {
  133.                 rdev->mc.vram_width = chansize;
  134.         } else if ((rdev->family == CHIP_RV630) ||
  135.                         (rdev->family == CHIP_RV635)) {
  136.                 rdev->mc.vram_width = 2 * chansize;
  137.         }
  138. }
  139.  
  140. void r600_vram_info(struct radeon_device *rdev)
  141. {
  142.         r600_vram_get_type(rdev);
  143.         rdev->mc.real_vram_size = RREG32(R600_CONFIG_MEMSIZE);
  144.         rdev->mc.mc_vram_size = rdev->mc.real_vram_size;
  145.  
  146.         /* Could aper size report 0 ? */
  147.         rdev->mc.aper_base = drm_get_resource_start(rdev->ddev, 0);
  148.         rdev->mc.aper_size = drm_get_resource_len(rdev->ddev, 0);
  149. }
  150.  
  151. /*
  152.  * Indirect registers accessor
  153.  */
  154. uint32_t r600_pciep_rreg(struct radeon_device *rdev, uint32_t reg)
  155. {
  156.         uint32_t r;
  157.  
  158.         WREG32(R600_PCIE_PORT_INDEX, ((reg) & 0xff));
  159.         (void)RREG32(R600_PCIE_PORT_INDEX);
  160.         r = RREG32(R600_PCIE_PORT_DATA);
  161.         return r;
  162. }
  163.  
  164. void r600_pciep_wreg(struct radeon_device *rdev, uint32_t reg, uint32_t v)
  165. {
  166.         WREG32(R600_PCIE_PORT_INDEX, ((reg) & 0xff));
  167.         (void)RREG32(R600_PCIE_PORT_INDEX);
  168.         WREG32(R600_PCIE_PORT_DATA, (v));
  169.         (void)RREG32(R600_PCIE_PORT_DATA);
  170. }
  171.