1 /* $NetBSD: mga_warp.c,v 1.3 2021/12/18 23:45:32 riastradh Exp $ */
2
3 /* mga_warp.c -- Matrox G200/G400 WARP engine management -*- linux-c -*-
4 * Created: Thu Jan 11 21:29:32 2001 by gareth@valinux.com
5 *
6 * Copyright 2000 VA Linux Systems, Inc., Sunnyvale, California.
7 * All Rights Reserved.
8 *
9 * Permission is hereby granted, free of charge, to any person obtaining a
10 * copy of this software and associated documentation files (the "Software"),
11 * to deal in the Software without restriction, including without limitation
12 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
13 * and/or sell copies of the Software, and to permit persons to whom the
14 * Software is furnished to do so, subject to the following conditions:
15 *
16 * The above copyright notice and this permission notice (including the next
17 * paragraph) shall be included in all copies or substantial portions of the
18 * Software.
19 *
20 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
21 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
22 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
23 * VA LINUX SYSTEMS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
24 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
25 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
26 * OTHER DEALINGS IN THE SOFTWARE.
27 *
28 * Authors:
29 * Gareth Hughes <gareth@valinux.com>
30 */
31
32 #include <sys/cdefs.h>
33 __KERNEL_RCSID(0, "$NetBSD: mga_warp.c,v 1.3 2021/12/18 23:45:32 riastradh Exp $");
34
35 #include <linux/firmware.h>
36 #include <linux/ihex.h>
37 #include <linux/module.h>
38 #include <linux/platform_device.h>
39
40 #include "mga_drv.h"
41
42 #define FIRMWARE_G200 "matrox/g200_warp.fw"
43 #define FIRMWARE_G400 "matrox/g400_warp.fw"
44
45 MODULE_FIRMWARE(FIRMWARE_G200);
46 MODULE_FIRMWARE(FIRMWARE_G400);
47
48 #define MGA_WARP_CODE_ALIGN 256 /* in bytes */
49
50 #define WARP_UCODE_SIZE(size) ALIGN(size, MGA_WARP_CODE_ALIGN)
51
mga_warp_install_microcode(drm_mga_private_t * dev_priv)52 int mga_warp_install_microcode(drm_mga_private_t *dev_priv)
53 {
54 unsigned char *vcbase = dev_priv->warp->handle;
55 unsigned long pcbase = dev_priv->warp->offset;
56 const char *firmware_name;
57 struct platform_device *pdev;
58 const struct firmware *fw = NULL;
59 const struct ihex_binrec *rec;
60 unsigned int size;
61 int n_pipes, where;
62 int rc = 0;
63
64 switch (dev_priv->chipset) {
65 case MGA_CARD_TYPE_G400:
66 case MGA_CARD_TYPE_G550:
67 firmware_name = FIRMWARE_G400;
68 n_pipes = MGA_MAX_G400_PIPES;
69 break;
70 case MGA_CARD_TYPE_G200:
71 firmware_name = FIRMWARE_G200;
72 n_pipes = MGA_MAX_G200_PIPES;
73 break;
74 default:
75 return -EINVAL;
76 }
77
78 pdev = platform_device_register_simple("mga_warp", 0, NULL, 0);
79 if (IS_ERR(pdev)) {
80 DRM_ERROR("mga: Failed to register microcode\n");
81 return PTR_ERR(pdev);
82 }
83 rc = request_ihex_firmware(&fw, firmware_name, &pdev->dev);
84 platform_device_unregister(pdev);
85 if (rc) {
86 DRM_ERROR("mga: Failed to load microcode \"%s\"\n",
87 firmware_name);
88 return rc;
89 }
90
91 size = 0;
92 where = 0;
93 for (rec = (const struct ihex_binrec *)fw->data;
94 rec;
95 rec = ihex_next_binrec(rec)) {
96 size += WARP_UCODE_SIZE(be16_to_cpu(rec->len));
97 where++;
98 }
99
100 if (where != n_pipes) {
101 DRM_ERROR("mga: Invalid microcode \"%s\"\n", firmware_name);
102 rc = -EINVAL;
103 goto out;
104 }
105 size = PAGE_ALIGN(size);
106 DRM_DEBUG("MGA ucode size = %d bytes\n", size);
107 if (size > dev_priv->warp->size) {
108 DRM_ERROR("microcode too large! (%u > %lu)\n",
109 size, dev_priv->warp->size);
110 rc = -ENOMEM;
111 goto out;
112 }
113
114 memset(dev_priv->warp_pipe_phys, 0, sizeof(dev_priv->warp_pipe_phys));
115
116 where = 0;
117 for (rec = (const struct ihex_binrec *)fw->data;
118 rec;
119 rec = ihex_next_binrec(rec)) {
120 unsigned int src_size, dst_size;
121
122 DRM_DEBUG(" pcbase = 0x%08lx vcbase = %p\n", pcbase, vcbase);
123 dev_priv->warp_pipe_phys[where] = pcbase;
124 src_size = be16_to_cpu(rec->len);
125 dst_size = WARP_UCODE_SIZE(src_size);
126 memcpy(vcbase, rec->data, src_size);
127 pcbase += dst_size;
128 vcbase += dst_size;
129 where++;
130 }
131
132 out:
133 release_firmware(fw);
134 return rc;
135 }
136
137 #define WMISC_EXPECTED (MGA_WUCODECACHE_ENABLE | MGA_WMASTER_ENABLE)
138
mga_warp_init(drm_mga_private_t * dev_priv)139 int mga_warp_init(drm_mga_private_t *dev_priv)
140 {
141 u32 wmisc;
142
143 /* FIXME: Get rid of these damned magic numbers...
144 */
145 switch (dev_priv->chipset) {
146 case MGA_CARD_TYPE_G400:
147 case MGA_CARD_TYPE_G550:
148 MGA_WRITE(MGA_WIADDR2, MGA_WMODE_SUSPEND);
149 MGA_WRITE(MGA_WGETMSB, 0x00000E00);
150 MGA_WRITE(MGA_WVRTXSZ, 0x00001807);
151 MGA_WRITE(MGA_WACCEPTSEQ, 0x18000000);
152 break;
153 case MGA_CARD_TYPE_G200:
154 MGA_WRITE(MGA_WIADDR, MGA_WMODE_SUSPEND);
155 MGA_WRITE(MGA_WGETMSB, 0x1606);
156 MGA_WRITE(MGA_WVRTXSZ, 7);
157 break;
158 default:
159 return -EINVAL;
160 }
161
162 MGA_WRITE(MGA_WMISC, (MGA_WUCODECACHE_ENABLE |
163 MGA_WMASTER_ENABLE | MGA_WCACHEFLUSH_ENABLE));
164 wmisc = MGA_READ(MGA_WMISC);
165 if (wmisc != WMISC_EXPECTED) {
166 DRM_ERROR("WARP engine config failed! 0x%x != 0x%x\n",
167 wmisc, WMISC_EXPECTED);
168 return -EINVAL;
169 }
170
171 return 0;
172 }
173