Rev 4080 | Go to most recent revision | Details | Last modification | View Log | RSS feed
| Rev | Author | Line No. | Line |
|---|---|---|---|
| 4075 | Serge | 1 | /************************************************************************** |
| 2 | * |
||
| 3 | * Copyright © 2009-2011 VMware, Inc., Palo Alto, CA., USA |
||
| 4 | * All Rights Reserved. |
||
| 5 | * |
||
| 6 | * Permission is hereby granted, free of charge, to any person obtaining a |
||
| 7 | * copy of this software and associated documentation files (the |
||
| 8 | * "Software"), to deal in the Software without restriction, including |
||
| 9 | * without limitation the rights to use, copy, modify, merge, publish, |
||
| 10 | * distribute, sub license, and/or sell copies of the Software, and to |
||
| 11 | * permit persons to whom the Software is furnished to do so, subject to |
||
| 12 | * the following conditions: |
||
| 13 | * |
||
| 14 | * The above copyright notice and this permission notice (including the |
||
| 15 | * next paragraph) shall be included in all copies or substantial portions |
||
| 16 | * of the Software. |
||
| 17 | * |
||
| 18 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
||
| 19 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
||
| 20 | * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL |
||
| 21 | * THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, |
||
| 22 | * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR |
||
| 23 | * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE |
||
| 24 | * USE OR OTHER DEALINGS IN THE SOFTWARE. |
||
| 25 | * |
||
| 26 | **************************************************************************/ |
||
| 27 | #define mb() asm volatile("mfence" : : : "memory") |
||
| 28 | #define rmb() asm volatile("lfence" : : : "memory") |
||
| 29 | #define wmb() asm volatile("sfence" : : : "memory") |
||
| 30 | |||
| 31 | #include |
||
| 32 | #include |
||
| 33 | #include "vmwgfx_drv.h" |
||
| 34 | |||
| 35 | |||
| 36 | #define VMW_PPN_SIZE sizeof(unsigned long) |
||
| 37 | |||
| 38 | static int vmw_gmr2_bind(struct vmw_private *dev_priv, |
||
| 39 | struct page *pages[], |
||
| 40 | unsigned long num_pages, |
||
| 41 | int gmr_id) |
||
| 42 | { |
||
| 43 | SVGAFifoCmdDefineGMR2 define_cmd; |
||
| 44 | SVGAFifoCmdRemapGMR2 remap_cmd; |
||
| 45 | uint32_t define_size = sizeof(define_cmd) + 4; |
||
| 46 | uint32_t remap_size = VMW_PPN_SIZE * num_pages + sizeof(remap_cmd) + 4; |
||
| 47 | uint32_t *cmd; |
||
| 48 | uint32_t *cmd_orig; |
||
| 49 | uint32_t i; |
||
| 50 | |||
| 51 | cmd_orig = cmd = vmw_fifo_reserve(dev_priv, define_size + remap_size); |
||
| 52 | if (unlikely(cmd == NULL)) |
||
| 53 | return -ENOMEM; |
||
| 54 | |||
| 55 | define_cmd.gmrId = gmr_id; |
||
| 56 | define_cmd.numPages = num_pages; |
||
| 57 | |||
| 58 | remap_cmd.gmrId = gmr_id; |
||
| 59 | remap_cmd.flags = (VMW_PPN_SIZE > sizeof(*cmd)) ? |
||
| 60 | SVGA_REMAP_GMR2_PPN64 : SVGA_REMAP_GMR2_PPN32; |
||
| 61 | remap_cmd.offsetPages = 0; |
||
| 62 | remap_cmd.numPages = num_pages; |
||
| 63 | |||
| 64 | *cmd++ = SVGA_CMD_DEFINE_GMR2; |
||
| 65 | memcpy(cmd, &define_cmd, sizeof(define_cmd)); |
||
| 66 | cmd += sizeof(define_cmd) / sizeof(uint32); |
||
| 67 | |||
| 68 | *cmd++ = SVGA_CMD_REMAP_GMR2; |
||
| 69 | memcpy(cmd, &remap_cmd, sizeof(remap_cmd)); |
||
| 70 | cmd += sizeof(remap_cmd) / sizeof(uint32); |
||
| 71 | |||
| 72 | for (i = 0; i < num_pages; ++i) { |
||
| 73 | if (VMW_PPN_SIZE <= 4) |
||
| 74 | *cmd = page_to_pfn(*pages++); |
||
| 75 | else |
||
| 76 | *((uint64_t *)cmd) = page_to_pfn(*pages++); |
||
| 77 | |||
| 78 | cmd += VMW_PPN_SIZE / sizeof(*cmd); |
||
| 79 | } |
||
| 80 | |||
| 81 | vmw_fifo_commit(dev_priv, define_size + remap_size); |
||
| 82 | |||
| 83 | return 0; |
||
| 84 | } |
||
| 85 | |||
| 86 | static void vmw_gmr2_unbind(struct vmw_private *dev_priv, |
||
| 87 | int gmr_id) |
||
| 88 | { |
||
| 89 | SVGAFifoCmdDefineGMR2 define_cmd; |
||
| 90 | uint32_t define_size = sizeof(define_cmd) + 4; |
||
| 91 | uint32_t *cmd; |
||
| 92 | |||
| 93 | cmd = vmw_fifo_reserve(dev_priv, define_size); |
||
| 94 | if (unlikely(cmd == NULL)) { |
||
| 95 | DRM_ERROR("GMR2 unbind failed.\n"); |
||
| 96 | return; |
||
| 97 | } |
||
| 98 | define_cmd.gmrId = gmr_id; |
||
| 99 | define_cmd.numPages = 0; |
||
| 100 | |||
| 101 | *cmd++ = SVGA_CMD_DEFINE_GMR2; |
||
| 102 | memcpy(cmd, &define_cmd, sizeof(define_cmd)); |
||
| 103 | |||
| 104 | vmw_fifo_commit(dev_priv, define_size); |
||
| 105 | } |
||
| 106 | |||
| 107 | |||
| 108 | int vmw_gmr_bind(struct vmw_private *dev_priv, |
||
| 109 | struct page *pages[], |
||
| 110 | unsigned long num_pages, |
||
| 111 | int gmr_id) |
||
| 112 | { |
||
| 113 | struct list_head desc_pages; |
||
| 114 | int ret; |
||
| 115 | |||
| 116 | if (likely(dev_priv->capabilities & SVGA_CAP_GMR2)) |
||
| 117 | return vmw_gmr2_bind(dev_priv, pages, num_pages, gmr_id); |
||
| 118 | |||
| 119 | printf("%s epic fail\n",__FUNCTION__); |
||
| 120 | return -EINVAL; |
||
| 121 | } |
||
| 122 | |||
| 123 | |||
| 124 | void vmw_gmr_unbind(struct vmw_private *dev_priv, int gmr_id) |
||
| 125 | { |
||
| 126 | if (likely(dev_priv->capabilities & SVGA_CAP_GMR2)) { |
||
| 127 | vmw_gmr2_unbind(dev_priv, gmr_id); |
||
| 128 | return; |
||
| 129 | } |
||
| 130 | |||
| 131 | mutex_lock(&dev_priv->hw_mutex); |
||
| 132 | vmw_write(dev_priv, SVGA_REG_GMR_ID, gmr_id); |
||
| 133 | wmb(); |
||
| 134 | vmw_write(dev_priv, SVGA_REG_GMR_DESCRIPTOR, 0); |
||
| 135 | mb(); |
||
| 136 | mutex_unlock(&dev_priv->hw_mutex); |
||
| 137 | } |