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/* mga_warp.c -- Matrox G200/G400 WARP engine management -*- linux-c -*-
* Created: Thu Jan 11 21:29:32 2001 by gareth@valinux.com
*
* Copyright 2000 VA Linux Systems, Inc., Sunnyvale, California.
* All Rights Reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice (including the next
* paragraph) shall be included in all copies or substantial portions of the
* Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* VA LINUX SYSTEMS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
* OTHER DEALINGS IN THE SOFTWARE.
*
* Authors:
* Gareth Hughes <gareth@valinux.com>
*/
#include <linux/firmware.h>
#include <linux/ihex.h>
#include <linux/platform_device.h>
#include <linux/module.h>
#include "drmP.h"
#include "drm.h"
#include "mga_drm.h"
#include "mga_drv.h"
#define FIRMWARE_G200 "matrox/g200_warp.fw"
#define FIRMWARE_G400 "matrox/g400_warp.fw"
MODULE_FIRMWARE(FIRMWARE_G200);
MODULE_FIRMWARE(FIRMWARE_G400);
#define MGA_WARP_CODE_ALIGN 256 /* in bytes */
#define WARP_UCODE_SIZE(size) ALIGN(size, MGA_WARP_CODE_ALIGN)
int mga_warp_install_microcode(drm_mga_private_t *dev_priv)
{
unsigned char *vcbase = dev_priv->warp->handle;
unsigned long pcbase = dev_priv->warp->offset;
const char *firmware_name;
struct platform_device *pdev;
const struct firmware *fw = NULL;
const struct ihex_binrec *rec;
unsigned int size;
int n_pipes, where;
int rc = 0;
switch (dev_priv->chipset) {
case MGA_CARD_TYPE_G400:
case MGA_CARD_TYPE_G550:
firmware_name = FIRMWARE_G400;
n_pipes = MGA_MAX_G400_PIPES;
break;
case MGA_CARD_TYPE_G200:
firmware_name = FIRMWARE_G200;
n_pipes = MGA_MAX_G200_PIPES;
break;
default:
return -EINVAL;
}
pdev = platform_device_register_simple("mga_warp", 0, NULL, 0);
if (IS_ERR(pdev)) {
DRM_ERROR("mga: Failed to register microcode\n");
return PTR_ERR(pdev);
}
rc = request_ihex_firmware(&fw, firmware_name, &pdev->dev);
platform_device_unregister(pdev);
if (rc) {
DRM_ERROR("mga: Failed to load microcode \"%s\"\n",
firmware_name);
return rc;
}
size = 0;
where = 0;
for (rec = (const struct ihex_binrec *)fw->data;
rec;
rec = ihex_next_binrec(rec)) {
size += WARP_UCODE_SIZE(be16_to_cpu(rec->len));
where++;
}
if (where != n_pipes) {
DRM_ERROR("mga: Invalid microcode \"%s\"\n", firmware_name);
rc = -EINVAL;
goto out;
}
size = PAGE_ALIGN(size);
DRM_DEBUG("MGA ucode size = %d bytes\n", size);
if (size > dev_priv->warp->size) {
DRM_ERROR("microcode too large! (%u > %lu)\n",
size, dev_priv->warp->size);
rc = -ENOMEM;
goto out;
}
memset(dev_priv->warp_pipe_phys, 0, sizeof(dev_priv->warp_pipe_phys));
where = 0;
for (rec = (const struct ihex_binrec *)fw->data;
rec;
rec = ihex_next_binrec(rec)) {
unsigned int src_size, dst_size;
DRM_DEBUG(" pcbase = 0x%08lx vcbase = %p\n", pcbase, vcbase);
dev_priv->warp_pipe_phys[where] = pcbase;
src_size = be16_to_cpu(rec->len);
dst_size = WARP_UCODE_SIZE(src_size);
memcpy(vcbase, rec->data, src_size);
pcbase += dst_size;
vcbase += dst_size;
where++;
}
out:
release_firmware(fw);
return rc;
}
#define WMISC_EXPECTED (MGA_WUCODECACHE_ENABLE | MGA_WMASTER_ENABLE)
int mga_warp_init(drm_mga_private_t *dev_priv)
{
u32 wmisc;
/* FIXME: Get rid of these damned magic numbers...
*/
switch (dev_priv->chipset) {
case MGA_CARD_TYPE_G400:
case MGA_CARD_TYPE_G550:
MGA_WRITE(MGA_WIADDR2, MGA_WMODE_SUSPEND);
MGA_WRITE(MGA_WGETMSB, 0x00000E00);
MGA_WRITE(MGA_WVRTXSZ, 0x00001807);
MGA_WRITE(MGA_WACCEPTSEQ, 0x18000000);
break;
case MGA_CARD_TYPE_G200:
MGA_WRITE(MGA_WIADDR, MGA_WMODE_SUSPEND);
MGA_WRITE(MGA_WGETMSB, 0x1606);
MGA_WRITE(MGA_WVRTXSZ, 7);
break;
default:
return -EINVAL;
}
MGA_WRITE(MGA_WMISC, (MGA_WUCODECACHE_ENABLE |
MGA_WMASTER_ENABLE | MGA_WCACHEFLUSH_ENABLE));
wmisc = MGA_READ(MGA_WMISC);
if (wmisc != WMISC_EXPECTED) {
DRM_ERROR("WARP engine config failed! 0x%x != 0x%x\n",
wmisc, WMISC_EXPECTED);
return -EINVAL;
}
return 0;
}
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