1 /* 2 * Copyright 2012 Red Hat Inc. 3 * 4 * Permission is hereby granted, free of charge, to any person obtaining a 5 * copy of this software and associated documentation files (the 6 * "Software"), to deal in the Software without restriction, including 7 * without limitation the rights to use, copy, modify, merge, publish, 8 * distribute, sub license, and/or sell copies of the Software, and to 9 * permit persons to whom the Software is furnished to do so, subject to 10 * the following conditions: 11 * 12 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 13 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 14 * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL 15 * THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, 16 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR 17 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE 18 * USE OR OTHER DEALINGS IN THE SOFTWARE. 19 * 20 * The above copyright notice and this permission notice (including the 21 * next paragraph) shall be included in all copies or substantial portions 22 * of the Software. 23 * 24 */ 25 /* 26 * Authors: Dave Airlie <airlied@redhat.com> 27 */ 28 29 #include <linux/delay.h> 30 #include <linux/pci.h> 31 32 #include <drm/drm_print.h> 33 34 #include "ast_drv.h" 35 #include "ast_post.h" 36 37 int ast_post_gpu(struct ast_device *ast) 38 { 39 int ret; 40 41 if (AST_GEN(ast) >= 7) { 42 ret = ast_2600_post(ast); 43 if (ret) 44 return ret; 45 } else if (AST_GEN(ast) >= 6) { 46 ret = ast_2500_post(ast); 47 if (ret) 48 return ret; 49 } else if (AST_GEN(ast) >= 4) { 50 ret = ast_2300_post(ast); 51 if (ret) 52 return ret; 53 } else if (AST_GEN(ast) >= 2) { 54 ret = ast_2100_post(ast); 55 if (ret) 56 return ret; 57 } else { 58 ret = ast_2000_post(ast); 59 if (ret) 60 return ret; 61 } 62 63 return 0; 64 } 65 66 #define TIMEOUT 5000000 67 68 bool mmc_test(struct ast_device *ast, u32 datagen, u8 test_ctl) 69 { 70 u32 data, timeout; 71 72 ast_moutdwm(ast, AST_REG_MCR70, 0x00000000); 73 ast_moutdwm(ast, AST_REG_MCR70, (datagen << 3) | test_ctl); 74 timeout = 0; 75 do { 76 data = ast_mindwm(ast, AST_REG_MCR70) & 0x3000; 77 if (data & 0x2000) 78 return false; 79 if (++timeout > TIMEOUT) { 80 ast_moutdwm(ast, AST_REG_MCR70, 0x00000000); 81 return false; 82 } 83 } while (!data); 84 ast_moutdwm(ast, AST_REG_MCR70, 0x0); 85 return true; 86 } 87 88 bool mmc_test_burst(struct ast_device *ast, u32 datagen) 89 { 90 return mmc_test(ast, datagen, 0xc1); 91 } 92