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linux/drivers/gpu/drm/radeon/radeon_agp.c
Alex Deucher e57415d85f drm/radeon/kms: fix agp mode setup on cards that use pcie bridges 
Asics that use an AGP to PCIE bridge don't have the AGP_STATUS
register so just use whatever mode the host side setup.

Signed-off-by: Alex Deucher <alexdeucher@gmail.com>
Cc: Jerome Glisse <glisse@freedesktop.org>
Signed-off-by: Dave Airlie <airlied@redhat.com>
2010-08-20 08:48:55 +10:00

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/*
* Copyright 2008 Red Hat Inc.
* Copyright 2009 Jerome Glisse.
*
* 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 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
* THE COPYRIGHT HOLDER(S) OR AUTHOR(S) 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:
* Dave Airlie
* Jerome Glisse <glisse@freedesktop.org>
*/
#include "drmP.h"
#include "drm.h"
#include "radeon.h"
#include "radeon_drm.h"
#if __OS_HAS_AGP
struct radeon_agpmode_quirk {
u32 hostbridge_vendor;
u32 hostbridge_device;
u32 chip_vendor;
u32 chip_device;
u32 subsys_vendor;
u32 subsys_device;
u32 default_mode;
};
static struct radeon_agpmode_quirk radeon_agpmode_quirk_list[] = {
/* Intel E7505 Memory Controller Hub / RV350 AR [Radeon 9600XT] Needs AGPMode 4 (deb #515326) */
{ PCI_VENDOR_ID_INTEL, 0x2550, PCI_VENDOR_ID_ATI, 0x4152, 0x1458, 0x4038, 4},
/* Intel 82865G/PE/P DRAM Controller/Host-Hub / Mobility 9800 Needs AGPMode 4 (deb #462590) */
{ PCI_VENDOR_ID_INTEL, 0x2570, PCI_VENDOR_ID_ATI, 0x4a4e, PCI_VENDOR_ID_DELL, 0x5106, 4},
/* Intel 82865G/PE/P DRAM Controller/Host-Hub / RV280 [Radeon 9200 SE] Needs AGPMode 4 (lp #300304) */
{ PCI_VENDOR_ID_INTEL, 0x2570, PCI_VENDOR_ID_ATI, 0x5964,
0x148c, 0x2073, 4},
/* Intel 82855PM Processor to I/O Controller / Mobility M6 LY Needs AGPMode 1 (deb #467235) */
{ PCI_VENDOR_ID_INTEL, 0x3340, PCI_VENDOR_ID_ATI, 0x4c59,
PCI_VENDOR_ID_IBM, 0x052f, 1},
/* Intel 82855PM host bridge / Mobility 9600 M10 RV350 Needs AGPMode 1 (lp #195051) */
{ PCI_VENDOR_ID_INTEL, 0x3340, PCI_VENDOR_ID_ATI, 0x4e50,
PCI_VENDOR_ID_IBM, 0x0550, 1},
/* Intel 82855PM host bridge / Mobility M7 needs AGPMode 1 */
{ PCI_VENDOR_ID_INTEL, 0x3340, PCI_VENDOR_ID_ATI, 0x4c57,
PCI_VENDOR_ID_IBM, 0x0530, 1},
/* Intel 82855PM host bridge / FireGL Mobility T2 RV350 Needs AGPMode 2 (fdo #20647) */
{ PCI_VENDOR_ID_INTEL, 0x3340, PCI_VENDOR_ID_ATI, 0x4e54,
PCI_VENDOR_ID_IBM, 0x054f, 2},
/* Intel 82855PM host bridge / Mobility M9+ / VaioPCG-V505DX Needs AGPMode 2 (fdo #17928) */
{ PCI_VENDOR_ID_INTEL, 0x3340, PCI_VENDOR_ID_ATI, 0x5c61,
PCI_VENDOR_ID_SONY, 0x816b, 2},
/* Intel 82855PM Processor to I/O Controller / Mobility M9+ Needs AGPMode 8 (phoronix forum) */
{ PCI_VENDOR_ID_INTEL, 0x3340, PCI_VENDOR_ID_ATI, 0x5c61,
PCI_VENDOR_ID_SONY, 0x8195, 8},
/* Intel 82830 830 Chipset Host Bridge / Mobility M6 LY Needs AGPMode 2 (fdo #17360)*/
{ PCI_VENDOR_ID_INTEL, 0x3575, PCI_VENDOR_ID_ATI, 0x4c59,
PCI_VENDOR_ID_DELL, 0x00e3, 2},
/* Intel 82852/82855 host bridge / Mobility FireGL 9000 R250 Needs AGPMode 1 (lp #296617) */
{ PCI_VENDOR_ID_INTEL, 0x3580, PCI_VENDOR_ID_ATI, 0x4c66,
PCI_VENDOR_ID_DELL, 0x0149, 1},
/* Intel 82852/82855 host bridge / Mobility 9600 M10 RV350 Needs AGPMode 1 (deb #467460) */
{ PCI_VENDOR_ID_INTEL, 0x3580, PCI_VENDOR_ID_ATI, 0x4e50,
0x1025, 0x0061, 1},
/* Intel 82852/82855 host bridge / Mobility 9600 M10 RV350 Needs AGPMode 1 (lp #203007) */
{ PCI_VENDOR_ID_INTEL, 0x3580, PCI_VENDOR_ID_ATI, 0x4e50,
0x1025, 0x0064, 1},
/* Intel 82852/82855 host bridge / Mobility 9600 M10 RV350 Needs AGPMode 1 (lp #141551) */
{ PCI_VENDOR_ID_INTEL, 0x3580, PCI_VENDOR_ID_ATI, 0x4e50,
PCI_VENDOR_ID_ASUSTEK, 0x1942, 1},
/* Intel 82852/82855 host bridge / Mobility 9600/9700 Needs AGPMode 1 (deb #510208) */
{ PCI_VENDOR_ID_INTEL, 0x3580, PCI_VENDOR_ID_ATI, 0x4e50,
0x10cf, 0x127f, 1},
/* ASRock K7VT4A+ AGP 8x / ATI Radeon 9250 AGP Needs AGPMode 4 (lp #133192) */
{ 0x1849, 0x3189, PCI_VENDOR_ID_ATI, 0x5960,
0x1787, 0x5960, 4},
/* VIA K8M800 Host Bridge / RV280 [Radeon 9200 PRO] Needs AGPMode 4 (fdo #12544) */
{ PCI_VENDOR_ID_VIA, 0x0204, PCI_VENDOR_ID_ATI, 0x5960,
0x17af, 0x2020, 4},
/* VIA KT880 Host Bridge / RV350 [Radeon 9550] Needs AGPMode 4 (fdo #19981) */
{ PCI_VENDOR_ID_VIA, 0x0269, PCI_VENDOR_ID_ATI, 0x4153,
PCI_VENDOR_ID_ASUSTEK, 0x003c, 4},
/* VIA VT8363 Host Bridge / R200 QL [Radeon 8500] Needs AGPMode 2 (lp #141551) */
{ PCI_VENDOR_ID_VIA, 0x0305, PCI_VENDOR_ID_ATI, 0x514c,
PCI_VENDOR_ID_ATI, 0x013a, 2},
/* VIA VT82C693A Host Bridge / RV280 [Radeon 9200 PRO] Needs AGPMode 2 (deb #515512) */
{ PCI_VENDOR_ID_VIA, 0x0691, PCI_VENDOR_ID_ATI, 0x5960,
PCI_VENDOR_ID_ASUSTEK, 0x004c, 2},
/* VIA VT82C693A Host Bridge / RV280 [Radeon 9200 PRO] Needs AGPMode 2 */
{ PCI_VENDOR_ID_VIA, 0x0691, PCI_VENDOR_ID_ATI, 0x5960,
PCI_VENDOR_ID_ASUSTEK, 0x0054, 2},
/* VIA VT8377 Host Bridge / R200 QM [Radeon 9100] Needs AGPMode 4 (deb #461144) */
{ PCI_VENDOR_ID_VIA, 0x3189, PCI_VENDOR_ID_ATI, 0x514d,
0x174b, 0x7149, 4},
/* VIA VT8377 Host Bridge / RV280 [Radeon 9200 PRO] Needs AGPMode 4 (lp #312693) */
{ PCI_VENDOR_ID_VIA, 0x3189, PCI_VENDOR_ID_ATI, 0x5960,
0x1462, 0x0380, 4},
/* VIA VT8377 Host Bridge / RV280 Needs AGPMode 4 (ati ML) */
{ PCI_VENDOR_ID_VIA, 0x3189, PCI_VENDOR_ID_ATI, 0x5964,
0x148c, 0x2073, 4},
/* ATI Host Bridge / RV280 [M9+] Needs AGPMode 1 (phoronix forum) */
{ PCI_VENDOR_ID_ATI, 0xcbb2, PCI_VENDOR_ID_ATI, 0x5c61,
PCI_VENDOR_ID_SONY, 0x8175, 1},
/* HP Host Bridge / R300 [FireGL X1] Needs AGPMode 2 (fdo #7770) */
{ PCI_VENDOR_ID_HP, 0x122e, PCI_VENDOR_ID_ATI, 0x4e47,
PCI_VENDOR_ID_ATI, 0x0152, 2},
{ 0, 0, 0, 0, 0, 0, 0 },
};
#endif
int radeon_agp_init(struct radeon_device *rdev)
{
#if __OS_HAS_AGP
struct radeon_agpmode_quirk *p = radeon_agpmode_quirk_list;
struct drm_agp_mode mode;
struct drm_agp_info info;
uint32_t agp_status;
int default_mode;
bool is_v3;
int ret;
/* Acquire AGP. */
ret = drm_agp_acquire(rdev->ddev);
if (ret) {
DRM_ERROR("Unable to acquire AGP: %d\n", ret);
return ret;
}
ret = drm_agp_info(rdev->ddev, &info);
if (ret) {
drm_agp_release(rdev->ddev);
DRM_ERROR("Unable to get AGP info: %d\n", ret);
return ret;
}
if (rdev->ddev->agp->agp_info.aper_size < 32) {
drm_agp_release(rdev->ddev);
dev_warn(rdev->dev, "AGP aperture too small (%zuM) "
"need at least 32M, disabling AGP\n",
rdev->ddev->agp->agp_info.aper_size);
return -EINVAL;
}
mode.mode = info.mode;
/* chips with the agp to pcie bridge don't have the AGP_STATUS register
* Just use the whatever mode the host sets up.
*/
if (rdev->family <= CHIP_RV350)
agp_status = (RREG32(RADEON_AGP_STATUS) | RADEON_AGPv3_MODE) & mode.mode;
else
agp_status = mode.mode;
is_v3 = !!(agp_status & RADEON_AGPv3_MODE);
if (is_v3) {
default_mode = (agp_status & RADEON_AGPv3_8X_MODE) ? 8 : 4;
} else {
if (agp_status & RADEON_AGP_4X_MODE) {
default_mode = 4;
} else if (agp_status & RADEON_AGP_2X_MODE) {
default_mode = 2;
} else {
default_mode = 1;
}
}
/* Apply AGPMode Quirks */
while (p && p->chip_device != 0) {
if (info.id_vendor == p->hostbridge_vendor &&
info.id_device == p->hostbridge_device &&
rdev->pdev->vendor == p->chip_vendor &&
rdev->pdev->device == p->chip_device &&
rdev->pdev->subsystem_vendor == p->subsys_vendor &&
rdev->pdev->subsystem_device == p->subsys_device) {
default_mode = p->default_mode;
}
++p;
}
if (radeon_agpmode > 0) {
if ((radeon_agpmode < (is_v3 ? 4 : 1)) ||
(radeon_agpmode > (is_v3 ? 8 : 4)) ||
(radeon_agpmode & (radeon_agpmode - 1))) {
DRM_ERROR("Illegal AGP Mode: %d (valid %s), leaving at %d\n",
radeon_agpmode, is_v3 ? "4, 8" : "1, 2, 4",
default_mode);
radeon_agpmode = default_mode;
} else {
DRM_INFO("AGP mode requested: %d\n", radeon_agpmode);
}
} else {
radeon_agpmode = default_mode;
}
mode.mode &= ~RADEON_AGP_MODE_MASK;
if (is_v3) {
switch (radeon_agpmode) {
case 8:
mode.mode |= RADEON_AGPv3_8X_MODE;
break;
case 4:
default:
mode.mode |= RADEON_AGPv3_4X_MODE;
break;
}
} else {
switch (radeon_agpmode) {
case 4:
mode.mode |= RADEON_AGP_4X_MODE;
break;
case 2:
mode.mode |= RADEON_AGP_2X_MODE;
break;
case 1:
default:
mode.mode |= RADEON_AGP_1X_MODE;
break;
}
}
mode.mode &= ~RADEON_AGP_FW_MODE; /* disable fw */
ret = drm_agp_enable(rdev->ddev, mode);
if (ret) {
DRM_ERROR("Unable to enable AGP (mode = 0x%lx)\n", mode.mode);
drm_agp_release(rdev->ddev);
return ret;
}
rdev->mc.agp_base = rdev->ddev->agp->agp_info.aper_base;
rdev->mc.gtt_size = rdev->ddev->agp->agp_info.aper_size << 20;
rdev->mc.gtt_start = rdev->mc.agp_base;
rdev->mc.gtt_end = rdev->mc.gtt_start + rdev->mc.gtt_size - 1;
dev_info(rdev->dev, "GTT: %lluM 0x%08llX - 0x%08llX\n",
rdev->mc.gtt_size >> 20, rdev->mc.gtt_start, rdev->mc.gtt_end);
/* workaround some hw issues */
if (rdev->family < CHIP_R200) {
WREG32(RADEON_AGP_CNTL, RREG32(RADEON_AGP_CNTL) | 0x000e0000);
}
return 0;
#else
return 0;
#endif
}
void radeon_agp_resume(struct radeon_device *rdev)
{
#if __OS_HAS_AGP
int r;
if (rdev->flags & RADEON_IS_AGP) {
r = radeon_agp_init(rdev);
if (r)
dev_warn(rdev->dev, "radeon AGP reinit failed\n");
}
#endif
}
void radeon_agp_fini(struct radeon_device *rdev)
{
#if __OS_HAS_AGP
if (rdev->ddev->agp && rdev->ddev->agp->acquired) {
drm_agp_release(rdev->ddev);
}
#endif
}
void radeon_agp_suspend(struct radeon_device *rdev)
{
radeon_agp_fini(rdev);
}
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