[GitHub/mt8127/android_kernel_alcatel_ttab.git] / drivers / gpu / drm / mga / mga_warp.c

/* 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 <drm/drmP.h>
#include <drm/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;
}
Commit	Line	Data
1da177e4 LT	1	/* mga_warp.c -- Matrox G200/G400 WARP engine management -- linux-c --
	2	* Created: Thu Jan 11 21:29:32 2001 by gareth@valinux.com
	3	*
	4	* Copyright 2000 VA Linux Systems, Inc., Sunnyvale, California.
	5	* All Rights Reserved.
	6	*
	7	* Permission is hereby granted, free of charge, to any person obtaining a
	8	* copy of this software and associated documentation files (the "Software"),
	9	* to deal in the Software without restriction, including without limitation
	10	* the rights to use, copy, modify, merge, publish, distribute, sublicense,
	11	* and/or sell copies of the Software, and to permit persons to whom the
	12	* Software is furnished to do so, subject to the following conditions:
	13	*
	14	* The above copyright notice and this permission notice (including the next
	15	* paragraph) shall be included in all copies or substantial portions of the
	16	* 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 NONINFRINGEMENT. IN NO EVENT SHALL
	21	* VA LINUX SYSTEMS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
	22	* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
	23	* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
	24	* OTHER DEALINGS IN THE SOFTWARE.
	25	*
	26	* Authors:
	27	* Gareth Hughes <gareth@valinux.com>
	28	*/
	29
ece2be79 BH	30	#include <linux/firmware.h>
	31	#include <linux/ihex.h>
	32	#include <linux/platform_device.h>
e0cd3608	33	#include <linux/module.h>
ece2be79	34
760285e7 DH	35	#include <drm/drmP.h>
760285e7 DH	36	#include <drm/mga_drm.h>
1da177e4	37	#include "mga_drv.h"
ece2be79 BH	38
	39	#define FIRMWARE_G200 "matrox/g200_warp.fw"
	40	#define FIRMWARE_G400 "matrox/g400_warp.fw"
	41
	42	MODULE_FIRMWARE(FIRMWARE_G200);
	43	MODULE_FIRMWARE(FIRMWARE_G400);
1da177e4	44
b5e89ed5	45	#define MGA_WARP_CODE_ALIGN 256 /* in bytes */
1da177e4	46
ece2be79 BH	47	#define WARP_UCODE_SIZE(size) ALIGN(size, MGA_WARP_CODE_ALIGN)
ece2be79 BH	48
f2b2cb79	49	int mga_warp_install_microcode(drm_mga_private_t *dev_priv)
1da177e4	50	{
ece2be79 BH	51	unsigned char *vcbase = dev_priv->warp->handle;
	52	unsigned long pcbase = dev_priv->warp->offset;
	53	const char *firmware_name;
	54	struct platform_device *pdev;
	55	const struct firmware *fw = NULL;
	56	const struct ihex_binrec *rec;
	57	unsigned int size;
	58	int n_pipes, where;
	59	int rc = 0;
	60
6795c985 DA	61	switch (dev_priv->chipset) {
	62	case MGA_CARD_TYPE_G400:
	63	case MGA_CARD_TYPE_G550:
ece2be79 BH	64	firmware_name = FIRMWARE_G400;
	65	n_pipes = MGA_MAX_G400_PIPES;
	66	break;
6795c985	67	case MGA_CARD_TYPE_G200:
ece2be79 BH	68	firmware_name = FIRMWARE_G200;
	69	n_pipes = MGA_MAX_G200_PIPES;
	70	break;
6795c985	71	default:
ece2be79	72	return -EINVAL;
6795c985	73	}
1da177e4	74
ece2be79 BH	75	pdev = platform_device_register_simple("mga_warp", 0, NULL, 0);
	76	if (IS_ERR(pdev)) {
	77	DRM_ERROR("mga: Failed to register microcode\n");
	78	return PTR_ERR(pdev);
	79	}
	80	rc = request_ihex_firmware(&fw, firmware_name, &pdev->dev);
	81	platform_device_unregister(pdev);
	82	if (rc) {
	83	DRM_ERROR("mga: Failed to load microcode \"%s\"\n",
	84	firmware_name);
	85	return rc;
	86	}
1da177e4	87
ece2be79 BH	88	size = 0;
	89	where = 0;
	90	for (rec = (const struct ihex_binrec *)fw->data;
	91	rec;
	92	rec = ihex_next_binrec(rec)) {
	93	size += WARP_UCODE_SIZE(be16_to_cpu(rec->len));
	94	where++;
	95	}
6795c985	96
ece2be79 BH	97	if (where != n_pipes) {
	98	DRM_ERROR("mga: Invalid microcode \"%s\"\n", firmware_name);
	99	rc = -EINVAL;
	100	goto out;
	101	}
	102	size = PAGE_ALIGN(size);
6795c985 DA	103	DRM_DEBUG("MGA ucode size = %d bytes\n", size);
	104	if (size > dev_priv->warp->size) {
	105	DRM_ERROR("microcode too large! (%u > %lu)\n",
	106	size, dev_priv->warp->size);
ece2be79 BH	107	rc = -ENOMEM;
ece2be79 BH	108	goto out;
6795c985 DA	109	}
6795c985 DA	110
ece2be79 BH	111	memset(dev_priv->warp_pipe_phys, 0, sizeof(dev_priv->warp_pipe_phys));
	112
	113	where = 0;
	114	for (rec = (const struct ihex_binrec *)fw->data;
	115	rec;
	116	rec = ihex_next_binrec(rec)) {
	117	unsigned int src_size, dst_size;
	118
	119	DRM_DEBUG(" pcbase = 0x%08lx vcbase = %p\n", pcbase, vcbase);
	120	dev_priv->warp_pipe_phys[where] = pcbase;
	121	src_size = be16_to_cpu(rec->len);
	122	dst_size = WARP_UCODE_SIZE(src_size);
	123	memcpy(vcbase, rec->data, src_size);
	124	pcbase += dst_size;
	125	vcbase += dst_size;
	126	where++;
1da177e4	127	}
ece2be79 BH	128
	129	out:
	130	release_firmware(fw);
	131	return rc;
1da177e4 LT	132	}
	133
	134	#define WMISC_EXPECTED (MGA_WUCODECACHE_ENABLE \| MGA_WMASTER_ENABLE)
	135
f2b2cb79	136	int mga_warp_init(drm_mga_private_t *dev_priv)
1da177e4 LT	137	{
	138	u32 wmisc;
	139
	140	/* FIXME: Get rid of these damned magic numbers...
	141	*/
b5e89ed5	142	switch (dev_priv->chipset) {
1da177e4	143	case MGA_CARD_TYPE_G400:
6795c985 DA	144	case MGA_CARD_TYPE_G550:
	145	MGA_WRITE(MGA_WIADDR2, MGA_WMODE_SUSPEND);
	146	MGA_WRITE(MGA_WGETMSB, 0x00000E00);
	147	MGA_WRITE(MGA_WVRTXSZ, 0x00001807);
	148	MGA_WRITE(MGA_WACCEPTSEQ, 0x18000000);
1da177e4 LT	149	break;
1da177e4 LT	150	case MGA_CARD_TYPE_G200:
b5e89ed5 DA	151	MGA_WRITE(MGA_WIADDR, MGA_WMODE_SUSPEND);
	152	MGA_WRITE(MGA_WGETMSB, 0x1606);
	153	MGA_WRITE(MGA_WVRTXSZ, 7);
1da177e4 LT	154	break;
1da177e4 LT	155	default:
20caafa6	156	return -EINVAL;
1da177e4 LT	157	}
1da177e4 LT	158
b5e89ed5 DA	159	MGA_WRITE(MGA_WMISC, (MGA_WUCODECACHE_ENABLE \|
	160	MGA_WMASTER_ENABLE \| MGA_WCACHEFLUSH_ENABLE));
	161	wmisc = MGA_READ(MGA_WMISC);
	162	if (wmisc != WMISC_EXPECTED) {
	163	DRM_ERROR("WARP engine config failed! 0x%x != 0x%x\n",
	164	wmisc, WMISC_EXPECTED);
20caafa6	165	return -EINVAL;
1da177e4 LT	166	}
	167
	168	return 0;
	169	}