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Do not attach to the unsupported chipsets, unless magic tunable is

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frobbed.

Sponsored by:	The FreeBSD Foundation
This commit is contained in:
Konstantin Belousov 2015-02-03 10:30:41 +00:00
parent ff5ba73987
commit ae18989eb9
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=278146
2 changed files with 17 additions and 1 deletions
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17
sys/dev/drm2/i915/i915_drv.c
View File

@ -208,6 +208,7 @@ static const struct intel_device_info intel_haswell_d_info = {
.has_blt_ring = 1,
.has_llc = 1,
.has_pch_split = 1,
.not_supported = 1,
};
static const struct intel_device_info intel_haswell_m_info = {
@ -217,6 +218,7 @@ static const struct intel_device_info intel_haswell_m_info = {
.has_blt_ring = 1,
.has_llc = 1,
.has_pch_split = 1,
.not_supported = 1,
};
#define INTEL_VGA_DEVICE(id, info_) { \
@ -282,6 +284,8 @@ static const struct intel_gfx_device_id {
{0, 0}
};
static int i915_enable_unsupported;
static int i915_drm_freeze(struct drm_device *dev)
{
struct drm_i915_private *dev_priv;
@ -413,8 +417,16 @@ i915_resume(device_t kdev)
static int
i915_probe(device_t kdev)
{
const struct intel_device_info *info;
int error;
return drm_probe(kdev, i915_pciidlist);
error = drm_probe(kdev, i915_pciidlist);
if (error != 0)
return (error);
info = i915_get_device_id(pci_get_device(kdev));
if (info == NULL)
return (ENXIO);
return (0);
}
int i915_modeset;
@ -458,6 +470,8 @@ i915_get_device_id(int device)
for (did = &pciidlist[0]; did->device != 0; did++) {
if (did->device != device)
continue;
if (did->info->not_supported && !i915_enable_unsupported)
return (NULL);
return (did->info);
}
return (NULL);
@ -527,6 +541,7 @@ int i915_enable_ppgtt = -1;
TUNABLE_INT("drm.i915.enable_ppgtt", &i915_enable_ppgtt);
int i915_enable_hangcheck = 1;
TUNABLE_INT("drm.i915.enable_hangcheck", &i915_enable_hangcheck);
TUNABLE_INT("drm.i915.enable_unsupported", &i915_enable_unsupported);
#define PCI_VENDOR_INTEL 0x8086
#define INTEL_PCH_DEVICE_ID_MASK 0xff00

1
sys/dev/drm2/i915/i915_drv.h
View File

@ -166,6 +166,7 @@ struct drm_i915_display_funcs {
struct intel_device_info {
u8 gen;
u8 not_supported:1;
u8 is_mobile:1;
u8 is_i85x:1;
u8 is_i915g:1;