Displaying 9 results from an estimated 9 matches for "pci_restore_config_space_range".
2018 Sep 13
4
[PATCH v3] PCI: Reprogram bridge prefetch registers on resume
...d_val, int retry, bool force)
{
u32 val;
pci_read_config_dword(pdev, offset, &val);
- if (val == saved_val)
+ if (!force && val == saved_val)
return;
for (;;) {
@@ -1313,25 +1313,34 @@ static void pci_restore_config_dword(struct pci_dev *pdev, int offset,
}
static void pci_restore_config_space_range(struct pci_dev *pdev,
- int start, int end, int retry)
+ int start, int end, int retry,
+ bool force)
{
int index;
for (index = end; index >= start; index--)
pci_restore_config_dword(pdev, 4 * index,
pdev->saved_config_space[index],
- retry);
+...
2018 Sep 12
3
[PATCH v2] PCI: Reprogram bridge prefetch registers on resume
..._config_dword(pdev, offset, &val);
+ if (val == saved_val)
+ return;
+ }
for (;;) {
pci_dbg(pdev, "restoring config space at offset %#x (was %#x, writing %#x)\n",
@@ -1313,25 +1315,34 @@ static void pci_restore_config_dword(struct pci_dev *pdev, int offset,
}
static void pci_restore_config_space_range(struct pci_dev *pdev,
- int start, int end, int retry)
+ int start, int end, int retry,
+ bool force)
{
int index;
for (index = end; index >= start; index--)
pci_restore_config_dword(pdev, 4 * index,
pdev->saved_config_space[index],
- retry);
+...
2018 Sep 27
2
[PATCH v3] PCI: Reprogram bridge prefetch registers on resume
...al);
> > - if (val == saved_val)
> > + if (!force && val == saved_val)
> > return;
> >
> > for (;;) {
> > @@ -1313,25 +1313,34 @@ static void pci_restore_config_dword(struct pci_dev *pdev, int offset,
> > }
> >
> > static void pci_restore_config_space_range(struct pci_dev *pdev,
> > - int start, int end, int retry)
> > + int start, int end, int retry,
> > + bool force)
> > {
> > int index;
> >
> > for (index = end; index >= start; index--)
> > pci_restore_config_dword(pd...
2018 Sep 13
0
[PATCH v3] PCI: Reprogram bridge prefetch registers on resume
...ev, offset, &val);
> - if (val == saved_val)
> + if (!force && val == saved_val)
> return;
>
> for (;;) {
> @@ -1313,25 +1313,34 @@ static void pci_restore_config_dword(struct pci_dev *pdev, int offset,
> }
>
> static void pci_restore_config_space_range(struct pci_dev *pdev,
> - int start, int end, int retry)
> + int start, int end, int retry,
> + bool force)
> {
> int index;
>
> for (inde...
2018 Sep 18
0
[PATCH v3] PCI: Reprogram bridge prefetch registers on resume
...pci_read_config_dword(pdev, offset, &val);
> - if (val == saved_val)
> + if (!force && val == saved_val)
> return;
>
> for (;;) {
> @@ -1313,25 +1313,34 @@ static void pci_restore_config_dword(struct pci_dev *pdev, int offset,
> }
>
> static void pci_restore_config_space_range(struct pci_dev *pdev,
> - int start, int end, int retry)
> + int start, int end, int retry,
> + bool force)
> {
> int index;
>
> for (index = end; index >= start; index--)
> pci_restore_config_dword(pdev, 4 * index,
> pdev->save...
2018 Sep 12
0
[PATCH v2] PCI: Reprogram bridge prefetch registers on resume
...return;
> + }
>
> for (;;) {
> pci_dbg(pdev, "restoring config space at offset %#x (was %#x, writing %#x)\n",
> @@ -1313,25 +1315,34 @@ static void pci_restore_config_dword(struct pci_dev *pdev, int offset,
> }
>
> static void pci_restore_config_space_range(struct pci_dev *pdev,
> - int start, int end, int retry)
> + int start, int end, int retry,
> + bool force)
> {
> int index;
>
> for (inde...
2018 Sep 29
0
[PATCH v3] PCI: Reprogram bridge prefetch registers on resume
...ved_val)
>>> + if (!force && val == saved_val)
>>> return;
>>>
>>> for (;;) {
>>> @@ -1313,25 +1313,34 @@ static void pci_restore_config_dword(struct pci_dev *pdev, int offset,
>>> }
>>>
>>> static void pci_restore_config_space_range(struct pci_dev *pdev,
>>> - int start, int end, int retry)
>>> + int start, int end, int retry,
>>> + bool force)
>>> {
>>> int index;
>>>
>>> for (index = end; index >= start; index--)
>>>...
2018 Sep 11
1
[PATCH] PCI: Reprogram bridge prefetch registers on resume
...ight be worth giving this another try.
3. Do nothing else beyond the minimal change that I propose for v4.19?
Looking a bit more into git history this seems to be a sensitive and
problematic area, more changes might mean more trouble. For example
right now pci_restore_config_space() does:
pci_restore_config_space_range(pdev, 10, 15, 0, 0);
/* Restore BARs before the command register. */
pci_restore_config_space_range(pdev, 4, 9, 10, 0);
pci_restore_config_space_range(pdev, 0, 3, 0, 0);
but pci_restore_config_space_range() already goes in descending order,
so the above is already equivalent...
2018 Sep 07
9
[PATCH] PCI: Reprogram bridge prefetch registers on resume
On 38+ Intel-based Asus products, the nvidia GPU becomes unusable
after S3 suspend/resume. The affected products include multiple
generations of nvidia GPUs and Intel SoCs. After resume, nouveau logs
many errors such as:
fifo: fault 00 [READ] at 0000005555555000 engine 00 [GR] client 04 [HUB/FE] reason 4a [] on channel -1 [007fa91000 unknown]
DRM: failed to idle channel 0 [DRM]