drivers/gpu/drm/radeon/rv770.c

   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 /* rv770,rv730,rv710  depends on : */
  33 void rs600_mc_disable_clients(struct radeon_device *rdev);
  34
  35 /* This files gather functions specifics to:
  36  * rv770,rv730,rv710
  37  *
  38  * Some of these functions might be used by newer ASICs.
  39  */
  40 int rv770_mc_wait_for_idle(struct radeon_device *rdev);
  41 void rv770_gpu_init(struct radeon_device *rdev);
  42
  43
  44 /*
  45  * MC
  46  */
  47 int rv770_mc_init(struct radeon_device *rdev)
  48 {
  49         uint32_t tmp;
  50
  51         rv770_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(R700_LOGICAL_PAGE_NUMBER, tmp);
  59         WREG32(R700_MC_VM_SYSTEM_APERTURE_LOW_ADDR, tmp);
  60         tmp = (rdev->mc.gtt_location + rdev->mc.gtt_size) / 4096;
  61         tmp = REG_SET(R700_LOGICAL_PAGE_NUMBER, tmp);
  62         WREG32(R700_MC_VM_SYSTEM_APERTURE_HIGH_ADDR, tmp);
  63
  64         rs600_mc_disable_clients(rdev);
  65         if (rv770_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.vram_size - 1;
  71         tmp = REG_SET(R700_MC_FB_TOP, tmp >> 24);
  72         tmp |= REG_SET(R700_MC_FB_BASE, rdev->mc.vram_location >> 24);
  73         WREG32(R700_MC_VM_FB_LOCATION, tmp);
  74         tmp = rdev->mc.gtt_location + rdev->mc.gtt_size - 1;
  75         tmp = REG_SET(R700_MC_AGP_TOP, tmp >> 22);
  76         WREG32(R700_MC_VM_AGP_TOP, tmp);
  77         tmp = REG_SET(R700_MC_AGP_BOT, rdev->mc.gtt_location >> 22);
  78         WREG32(R700_MC_VM_AGP_BOT, tmp);
  79         return 0;
  80 }
  81
  82 void rv770_mc_fini(struct radeon_device *rdev)
  83 {
  84         /* FIXME: implement */
  85 }
  86
  87
  88 /*
  89  * Global GPU functions
  90  */
  91 void rv770_errata(struct radeon_device *rdev)
  92 {
  93         rdev->pll_errata = 0;
  94 }
  95
  96 int rv770_mc_wait_for_idle(struct radeon_device *rdev)
  97 {
  98         /* FIXME: implement */
  99         return 0;
 100 }
 101
 102 void rv770_gpu_init(struct radeon_device *rdev)
 103 {
 104         /* FIXME: implement */
 105 }
 106
 107
 108 /*
 109  * VRAM info
 110  */
 111 void rv770_vram_get_type(struct radeon_device *rdev)
 112 {
 113         /* FIXME: implement */
 114 }
 115
 116 void rv770_vram_info(struct radeon_device *rdev)
 117 {
 118         rv770_vram_get_type(rdev);
 119
 120         /* FIXME: implement */
 121         /* Could aper size report 0 ? */
 122         rdev->mc.aper_base = drm_get_resource_start(rdev->ddev, 0);
 123         rdev->mc.aper_size = drm_get_resource_len(rdev->ddev, 0);
 124 }