* [igt-dev] [PATCH] tests/i915/i915_module_load: Test resizable bar support
@ 2022-06-15 5:41 priyanka.dandamudi
2022-06-15 6:38 ` Petri Latvala
2022-06-15 8:41 ` [igt-dev] ✗ Fi.CI.BUILD: failure for " Patchwork
0 siblings, 2 replies; 6+ messages in thread
From: priyanka.dandamudi @ 2022-06-15 5:41 UTC (permalink / raw)
To: matthew.auld, priyanka.dandamudi, igt-dev
From: Priyanka Dandamudi <priyanka.dandamudi@intel.com>
New test named resize bar has been added which tests whether
bar gets resized with different supported sizes.
Cc: Matthew Auld <matthew.auld@intel.com>
Signed-off-by: Priyanka Dandamudi <priyanka.dandamudi@intel.com>
---
tests/i915/i915_module_load.c | 64 +++++++++++++++++++++++++++++++++++
1 file changed, 64 insertions(+)
diff --git a/tests/i915/i915_module_load.c b/tests/i915/i915_module_load.c
index f5f98acc2..b334ef612 100644
--- a/tests/i915/i915_module_load.c
+++ b/tests/i915/i915_module_load.c
@@ -37,6 +37,9 @@
#include "igt_sysfs.h"
#include "igt_core.h"
+#define BAR_SIZE_SHIFT 20
+#define BYTE 1024
+
IGT_TEST_DESCRIPTION("Tests the i915 module loading.");
static void store_all(int i915)
@@ -236,6 +239,28 @@ hda_dynamic_debug(bool enable)
fclose(fp);
}
+static int driver_load_unload(struct drm_i915_query_memory_regions **regions, uint32_t lmem_bar_size)
+{
+ int i915 = -1;
+ char lmem_bar[64];
+
+ igt_i915_driver_unload();
+ if (lmem_bar_size == 0)
+ igt_assert_eq(igt_i915_driver_load(NULL), 0);
+ else {
+ sprintf(lmem_bar, "lmem_bar_size=%u", lmem_bar_size);
+ igt_assert_eq(igt_i915_driver_load(lmem_bar), 0);
+ }
+
+ i915 = __drm_open_driver(DRIVER_INTEL);
+ igt_require_fd(i915);
+ igt_require(gem_has_lmem(i915));
+ *regions = gem_get_query_memory_regions(i915);
+ igt_require(*regions);
+
+ return i915;
+}
+
igt_main
{
igt_describe("Verify the basic functionality of i915 driver after it's reloaded.");
@@ -286,5 +311,44 @@ igt_main
/* inject_fault() leaves the module unloaded */
}
+ igt_subtest("resize-bar") {
+ struct drm_i915_query_memory_regions *regions;
+ struct drm_i915_memory_region_info *region;
+ uint32_t lmem_bar_size;
+ uint32_t small_bar;
+ bool bar_check = false;
+ int i915 = -1;
+
+ i915 = driver_load_unload(®ions, 0);
+
+ for (unsigned int i = 0; i < (regions)->num_regions; i++)
+ for_each_if(((region) = &(regions)->regions[i])->region.memory_class == I915_MEMORY_CLASS_DEVICE) {
+ lmem_bar_size = ceil((float)(region->probed_size >> BAR_SIZE_SHIFT)/BYTE)*BYTE;
+ small_bar = (region->rsvd1[0] >> BAR_SIZE_SHIFT);
+ if (small_bar < lmem_bar_size)
+ bar_check = true;
+ }
+ while (lmem_bar_size >= 256) {
+
+ close(i915);
+
+ i915 = driver_load_unload(®ions, lmem_bar_size);
+
+ for (unsigned int i = 0; i < (regions)->num_regions; i++)
+ for_each_if(((region) = &(regions)->regions[i])->region.memory_class == I915_MEMORY_CLASS_DEVICE) {
+ igt_assert_f(((region->probed_size >> BAR_SIZE_SHIFT) == lmem_bar_size),
+ "Failed to set bar size");
+ if (bar_check)
+ igt_assert_f((small_bar == (region->rsvd1[0] >> BAR_SIZE_SHIFT)),
+ "Small bar is not set properly");
+ else
+ igt_assert_f(region->probed_size == region->rsvd1[0], "Small bar and"
+ " lmem bar values need to be same");
+ }
+ lmem_bar_size = lmem_bar_size >> 1;
+ }
+ igt_i915_driver_unload();
+ }
+
/* Subtests should unload the module themselves if they use modparams */
}
--
2.27.0
^ permalink raw reply related [flat|nested] 6+ messages in thread
* Re: [igt-dev] [PATCH] tests/i915/i915_module_load: Test resizable bar support
2022-06-15 5:41 [igt-dev] [PATCH] tests/i915/i915_module_load: Test resizable bar support priyanka.dandamudi
@ 2022-06-15 6:38 ` Petri Latvala
2022-06-15 11:20 ` Dandamudi, Priyanka
2022-06-15 8:41 ` [igt-dev] ✗ Fi.CI.BUILD: failure for " Patchwork
1 sibling, 1 reply; 6+ messages in thread
From: Petri Latvala @ 2022-06-15 6:38 UTC (permalink / raw)
To: priyanka.dandamudi; +Cc: igt-dev, matthew.auld
On Wed, Jun 15, 2022 at 11:11:46AM +0530, priyanka.dandamudi@intel.com wrote:
> From: Priyanka Dandamudi <priyanka.dandamudi@intel.com>
>
> New test named resize bar has been added which tests whether
> bar gets resized with different supported sizes.
>
> Cc: Matthew Auld <matthew.auld@intel.com>
> Signed-off-by: Priyanka Dandamudi <priyanka.dandamudi@intel.com>
> ---
> tests/i915/i915_module_load.c | 64 +++++++++++++++++++++++++++++++++++
> 1 file changed, 64 insertions(+)
>
> diff --git a/tests/i915/i915_module_load.c b/tests/i915/i915_module_load.c
> index f5f98acc2..b334ef612 100644
> --- a/tests/i915/i915_module_load.c
> +++ b/tests/i915/i915_module_load.c
> @@ -37,6 +37,9 @@
> #include "igt_sysfs.h"
> #include "igt_core.h"
>
> +#define BAR_SIZE_SHIFT 20
> +#define BYTE 1024
> +
> IGT_TEST_DESCRIPTION("Tests the i915 module loading.");
>
> static void store_all(int i915)
> @@ -236,6 +239,28 @@ hda_dynamic_debug(bool enable)
> fclose(fp);
> }
>
> +static int driver_load_unload(struct drm_i915_query_memory_regions **regions, uint32_t lmem_bar_size)
> +{
> + int i915 = -1;
> + char lmem_bar[64];
> +
> + igt_i915_driver_unload();
> + if (lmem_bar_size == 0)
> + igt_assert_eq(igt_i915_driver_load(NULL), 0);
> + else {
> + sprintf(lmem_bar, "lmem_bar_size=%u", lmem_bar_size);
> + igt_assert_eq(igt_i915_driver_load(lmem_bar), 0);
> + }
> +
> + i915 = __drm_open_driver(DRIVER_INTEL);
> + igt_require_fd(i915);
> + igt_require(gem_has_lmem(i915));
> + *regions = gem_get_query_memory_regions(i915);
> + igt_require(*regions);
> +
> + return i915;
> +}
> +
> igt_main
> {
> igt_describe("Verify the basic functionality of i915 driver after it's reloaded.");
> @@ -286,5 +311,44 @@ igt_main
> /* inject_fault() leaves the module unloaded */
> }
>
> + igt_subtest("resize-bar") {
> + struct drm_i915_query_memory_regions *regions;
> + struct drm_i915_memory_region_info *region;
> + uint32_t lmem_bar_size;
> + uint32_t small_bar;
> + bool bar_check = false;
> + int i915 = -1;
> +
> + i915 = driver_load_unload(®ions, 0);
Before the unload, do this:
i915 = drm_open_driver(DRIVER_INTEL);
igt_require(gem_has_lmem(i915);
close(i915);
That way we can avoid an unnecessary reload cycle on integrated.
Which kernel version has the lmem_bar_size parameter? You might want
to check its existence too. gem_lmem_swapping has an example of how
it's done, with the param "lmem_size".
--
Petri Latvala
> +
> + for (unsigned int i = 0; i < (regions)->num_regions; i++)
> + for_each_if(((region) = &(regions)->regions[i])->region.memory_class == I915_MEMORY_CLASS_DEVICE) {
> + lmem_bar_size = ceil((float)(region->probed_size >> BAR_SIZE_SHIFT)/BYTE)*BYTE;
> + small_bar = (region->rsvd1[0] >> BAR_SIZE_SHIFT);
> + if (small_bar < lmem_bar_size)
> + bar_check = true;
> + }
> + while (lmem_bar_size >= 256) {
> +
> + close(i915);
> +
> + i915 = driver_load_unload(®ions, lmem_bar_size);
> +
> + for (unsigned int i = 0; i < (regions)->num_regions; i++)
> + for_each_if(((region) = &(regions)->regions[i])->region.memory_class == I915_MEMORY_CLASS_DEVICE) {
> + igt_assert_f(((region->probed_size >> BAR_SIZE_SHIFT) == lmem_bar_size),
> + "Failed to set bar size");
> + if (bar_check)
> + igt_assert_f((small_bar == (region->rsvd1[0] >> BAR_SIZE_SHIFT)),
> + "Small bar is not set properly");
> + else
> + igt_assert_f(region->probed_size == region->rsvd1[0], "Small bar and"
> + " lmem bar values need to be same");
> + }
> + lmem_bar_size = lmem_bar_size >> 1;
> + }
> + igt_i915_driver_unload();
> + }
> +
> /* Subtests should unload the module themselves if they use modparams */
> }
> --
> 2.27.0
>
^ permalink raw reply [flat|nested] 6+ messages in thread
* [igt-dev] ✗ Fi.CI.BUILD: failure for tests/i915/i915_module_load: Test resizable bar support
2022-06-15 5:41 [igt-dev] [PATCH] tests/i915/i915_module_load: Test resizable bar support priyanka.dandamudi
2022-06-15 6:38 ` Petri Latvala
@ 2022-06-15 8:41 ` Patchwork
1 sibling, 0 replies; 6+ messages in thread
From: Patchwork @ 2022-06-15 8:41 UTC (permalink / raw)
To: priyanka.dandamudi; +Cc: igt-dev
== Series Details ==
Series: tests/i915/i915_module_load: Test resizable bar support
URL : https://patchwork.freedesktop.org/series/105141/
State : failure
== Summary ==
Applying: tests/i915/i915_module_load: Test resizable bar support
Using index info to reconstruct a base tree...
M tests/i915/i915_module_load.c
Falling back to patching base and 3-way merge...
Auto-merging tests/i915/i915_module_load.c
CONFLICT (content): Merge conflict in tests/i915/i915_module_load.c
Patch failed at 0001 tests/i915/i915_module_load: Test resizable bar support
When you have resolved this problem, run "git am --continue".
If you prefer to skip this patch, run "git am --skip" instead.
To restore the original branch and stop patching, run "git am --abort".
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: [igt-dev] [PATCH] tests/i915/i915_module_load: Test resizable bar support
2022-06-15 6:38 ` Petri Latvala
@ 2022-06-15 11:20 ` Dandamudi, Priyanka
2022-06-15 14:27 ` Petri Latvala
0 siblings, 1 reply; 6+ messages in thread
From: Dandamudi, Priyanka @ 2022-06-15 11:20 UTC (permalink / raw)
To: Latvala, Petri; +Cc: igt-dev
> -----Original Message-----
> From: Latvala, Petri <petri.latvala@intel.com>
> Sent: 15 June 2022 12:09 PM
> To: Dandamudi, Priyanka <priyanka.dandamudi@intel.com>
> Cc: Auld, Matthew <matthew.auld@intel.com>; igt-dev@lists.freedesktop.org
> Subject: Re: [igt-dev] [PATCH] tests/i915/i915_module_load: Test resizable bar
> support
>
> On Wed, Jun 15, 2022 at 11:11:46AM +0530, priyanka.dandamudi@intel.com
> wrote:
> > From: Priyanka Dandamudi <priyanka.dandamudi@intel.com>
> >
> > New test named resize bar has been added which tests whether bar gets
> > resized with different supported sizes.
> >
> > Cc: Matthew Auld <matthew.auld@intel.com>
> > Signed-off-by: Priyanka Dandamudi <priyanka.dandamudi@intel.com>
> > ---
> > tests/i915/i915_module_load.c | 64
> > +++++++++++++++++++++++++++++++++++
> > 1 file changed, 64 insertions(+)
> >
> > diff --git a/tests/i915/i915_module_load.c
> > b/tests/i915/i915_module_load.c index f5f98acc2..b334ef612 100644
> > --- a/tests/i915/i915_module_load.c
> > +++ b/tests/i915/i915_module_load.c
> > @@ -37,6 +37,9 @@
> > #include "igt_sysfs.h"
> > #include "igt_core.h"
> >
> > +#define BAR_SIZE_SHIFT 20
> > +#define BYTE 1024
> > +
> > IGT_TEST_DESCRIPTION("Tests the i915 module loading.");
> >
> > static void store_all(int i915)
> > @@ -236,6 +239,28 @@ hda_dynamic_debug(bool enable)
> > fclose(fp);
> > }
> >
> > +static int driver_load_unload(struct drm_i915_query_memory_regions
> > +**regions, uint32_t lmem_bar_size) {
> > + int i915 = -1;
> > + char lmem_bar[64];
> > +
> > + igt_i915_driver_unload();
> > + if (lmem_bar_size == 0)
> > + igt_assert_eq(igt_i915_driver_load(NULL), 0);
> > + else {
> > + sprintf(lmem_bar, "lmem_bar_size=%u", lmem_bar_size);
> > + igt_assert_eq(igt_i915_driver_load(lmem_bar), 0);
> > + }
> > +
> > + i915 = __drm_open_driver(DRIVER_INTEL);
> > + igt_require_fd(i915);
> > + igt_require(gem_has_lmem(i915));
> > + *regions = gem_get_query_memory_regions(i915);
> > + igt_require(*regions);
> > +
> > + return i915;
> > +}
> > +
> > igt_main
> > {
> > igt_describe("Verify the basic functionality of i915 driver after
> > it's reloaded."); @@ -286,5 +311,44 @@ igt_main
> > /* inject_fault() leaves the module unloaded */
> > }
> >
> > + igt_subtest("resize-bar") {
> > + struct drm_i915_query_memory_regions *regions;
> > + struct drm_i915_memory_region_info *region;
> > + uint32_t lmem_bar_size;
> > + uint32_t small_bar;
> > + bool bar_check = false;
> > + int i915 = -1;
> > +
> > + i915 = driver_load_unload(®ions, 0);
>
> Before the unload, do this:
>
> i915 = drm_open_driver(DRIVER_INTEL);
> igt_require(gem_has_lmem(i915);
> close(i915);
>
[Dandamudi, Priyanka]
The above work iam doing in driver_load_unload method.
> That way we can avoid an unnecessary reload cycle on integrated.
>
> Which kernel version has the lmem_bar_size parameter? You might want to
> check its existence too. gem_lmem_swapping has an example of how it's done,
> with the param "lmem_size".
>
>
> --
> Petri Latvala
>
[Dandamudi, Priyanka]
lmem_size will also allow to resize the bar eg:62MB which is not expected as 256MB is the minimum size.
lmem_bar_size is a new modparam which is being added from the driver side to test different supported sizes.
>
>
> > +
> > + for (unsigned int i = 0; i < (regions)->num_regions; i++)
> > + for_each_if(((region) = &(regions)->regions[i])-
> >region.memory_class == I915_MEMORY_CLASS_DEVICE) {
> > + lmem_bar_size = ceil((float)(region-
> >probed_size >> BAR_SIZE_SHIFT)/BYTE)*BYTE;
> > + small_bar = (region->rsvd1[0] >>
> BAR_SIZE_SHIFT);
> > + if (small_bar < lmem_bar_size)
> > + bar_check = true;
> > + }
> > + while (lmem_bar_size >= 256) {
> > +
> > + close(i915);
> > +
> > + i915 = driver_load_unload(®ions, lmem_bar_size);
> > +
> > + for (unsigned int i = 0; i < (regions)->num_regions; i++)
> > + for_each_if(((region) = &(regions)->regions[i])-
> >region.memory_class == I915_MEMORY_CLASS_DEVICE) {
> > + igt_assert_f(((region->probed_size >>
> BAR_SIZE_SHIFT) == lmem_bar_size),
> > + "Failed to set bar
> size");
> > + if (bar_check)
> > + igt_assert_f((small_bar ==
> (region->rsvd1[0] >> BAR_SIZE_SHIFT)),
> > + "Small bar is
> not set properly");
> > + else
> > + igt_assert_f(region-
> >probed_size == region->rsvd1[0], "Small bar and"
> > + " lmem bar
> values need to be same");
> > + }
> > + lmem_bar_size = lmem_bar_size >> 1;
> > + }
> > + igt_i915_driver_unload();
> > + }
> > +
> > /* Subtests should unload the module themselves if they use
> modparams */
> > }
> > --
> > 2.27.0
> >
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: [igt-dev] [PATCH] tests/i915/i915_module_load: Test resizable bar support
2022-06-15 11:20 ` Dandamudi, Priyanka
@ 2022-06-15 14:27 ` Petri Latvala
2022-06-16 8:25 ` Dandamudi, Priyanka
0 siblings, 1 reply; 6+ messages in thread
From: Petri Latvala @ 2022-06-15 14:27 UTC (permalink / raw)
To: Dandamudi, Priyanka; +Cc: igt-dev
On Wed, Jun 15, 2022 at 02:20:17PM +0300, Dandamudi, Priyanka wrote:
>
>
> > -----Original Message-----
> > From: Latvala, Petri <petri.latvala@intel.com>
> > Sent: 15 June 2022 12:09 PM
> > To: Dandamudi, Priyanka <priyanka.dandamudi@intel.com>
> > Cc: Auld, Matthew <matthew.auld@intel.com>; igt-dev@lists.freedesktop.org
> > Subject: Re: [igt-dev] [PATCH] tests/i915/i915_module_load: Test resizable bar
> > support
> >
> > On Wed, Jun 15, 2022 at 11:11:46AM +0530, priyanka.dandamudi@intel.com
> > wrote:
> > > From: Priyanka Dandamudi <priyanka.dandamudi@intel.com>
> > >
> > > New test named resize bar has been added which tests whether bar gets
> > > resized with different supported sizes.
> > >
> > > Cc: Matthew Auld <matthew.auld@intel.com>
> > > Signed-off-by: Priyanka Dandamudi <priyanka.dandamudi@intel.com>
> > > ---
> > > tests/i915/i915_module_load.c | 64
> > > +++++++++++++++++++++++++++++++++++
> > > 1 file changed, 64 insertions(+)
> > >
> > > diff --git a/tests/i915/i915_module_load.c
> > > b/tests/i915/i915_module_load.c index f5f98acc2..b334ef612 100644
> > > --- a/tests/i915/i915_module_load.c
> > > +++ b/tests/i915/i915_module_load.c
> > > @@ -37,6 +37,9 @@
> > > #include "igt_sysfs.h"
> > > #include "igt_core.h"
> > >
> > > +#define BAR_SIZE_SHIFT 20
> > > +#define BYTE 1024
> > > +
> > > IGT_TEST_DESCRIPTION("Tests the i915 module loading.");
> > >
> > > static void store_all(int i915)
> > > @@ -236,6 +239,28 @@ hda_dynamic_debug(bool enable)
> > > fclose(fp);
> > > }
> > >
> > > +static int driver_load_unload(struct drm_i915_query_memory_regions
> > > +**regions, uint32_t lmem_bar_size) {
> > > + int i915 = -1;
> > > + char lmem_bar[64];
> > > +
> > > + igt_i915_driver_unload();
> > > + if (lmem_bar_size == 0)
> > > + igt_assert_eq(igt_i915_driver_load(NULL), 0);
> > > + else {
> > > + sprintf(lmem_bar, "lmem_bar_size=%u", lmem_bar_size);
> > > + igt_assert_eq(igt_i915_driver_load(lmem_bar), 0);
> > > + }
> > > +
> > > + i915 = __drm_open_driver(DRIVER_INTEL);
> > > + igt_require_fd(i915);
> > > + igt_require(gem_has_lmem(i915));
> > > + *regions = gem_get_query_memory_regions(i915);
> > > + igt_require(*regions);
> > > +
> > > + return i915;
> > > +}
> > > +
> > > igt_main
> > > {
> > > igt_describe("Verify the basic functionality of i915 driver after
> > > it's reloaded."); @@ -286,5 +311,44 @@ igt_main
> > > /* inject_fault() leaves the module unloaded */
> > > }
> > >
> > > + igt_subtest("resize-bar") {
> > > + struct drm_i915_query_memory_regions *regions;
> > > + struct drm_i915_memory_region_info *region;
> > > + uint32_t lmem_bar_size;
> > > + uint32_t small_bar;
> > > + bool bar_check = false;
> > > + int i915 = -1;
> > > +
> > > + i915 = driver_load_unload(®ions, 0);
> >
> > Before the unload, do this:
> >
> > i915 = drm_open_driver(DRIVER_INTEL);
> > igt_require(gem_has_lmem(i915);
> > close(i915);
> >
> [Dandamudi, Priyanka]
> The above work iam doing in driver_load_unload method.
There the check is done after the unload. What I want is checking for
lmem before unload so we can avoid the unload, on integrated.
>
> > That way we can avoid an unnecessary reload cycle on integrated.
> >
> > Which kernel version has the lmem_bar_size parameter? You might want to
> > check its existence too. gem_lmem_swapping has an example of how it's done,
> > with the param "lmem_size".
> >
> >
> > --
> > Petri Latvala
> >
> [Dandamudi, Priyanka]
> lmem_size will also allow to resize the bar eg:62MB which is not expected as 256MB is the minimum size.
> lmem_bar_size is a new modparam which is being added from the driver side to test different supported sizes.
Yes, I didn't mean to use the same modparam. I meant to handle
checking for existence in the same way it's done for that other param.
--
Petri Latvala
> >
> >
> > > +
> > > + for (unsigned int i = 0; i < (regions)->num_regions; i++)
> > > + for_each_if(((region) = &(regions)->regions[i])-
> > >region.memory_class == I915_MEMORY_CLASS_DEVICE) {
> > > + lmem_bar_size = ceil((float)(region-
> > >probed_size >> BAR_SIZE_SHIFT)/BYTE)*BYTE;
> > > + small_bar = (region->rsvd1[0] >>
> > BAR_SIZE_SHIFT);
> > > + if (small_bar < lmem_bar_size)
> > > + bar_check = true;
> > > + }
> > > + while (lmem_bar_size >= 256) {
> > > +
> > > + close(i915);
> > > +
> > > + i915 = driver_load_unload(®ions, lmem_bar_size);
> > > +
> > > + for (unsigned int i = 0; i < (regions)->num_regions; i++)
> > > + for_each_if(((region) = &(regions)->regions[i])-
> > >region.memory_class == I915_MEMORY_CLASS_DEVICE) {
> > > + igt_assert_f(((region->probed_size >>
> > BAR_SIZE_SHIFT) == lmem_bar_size),
> > > + "Failed to set bar
> > size");
> > > + if (bar_check)
> > > + igt_assert_f((small_bar ==
> > (region->rsvd1[0] >> BAR_SIZE_SHIFT)),
> > > + "Small bar is
> > not set properly");
> > > + else
> > > + igt_assert_f(region-
> > >probed_size == region->rsvd1[0], "Small bar and"
> > > + " lmem bar
> > values need to be same");
> > > + }
> > > + lmem_bar_size = lmem_bar_size >> 1;
> > > + }
> > > + igt_i915_driver_unload();
> > > + }
> > > +
> > > /* Subtests should unload the module themselves if they use
> > modparams */
> > > }
> > > --
> > > 2.27.0
> > >
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: [igt-dev] [PATCH] tests/i915/i915_module_load: Test resizable bar support
2022-06-15 14:27 ` Petri Latvala
@ 2022-06-16 8:25 ` Dandamudi, Priyanka
0 siblings, 0 replies; 6+ messages in thread
From: Dandamudi, Priyanka @ 2022-06-16 8:25 UTC (permalink / raw)
To: Latvala, Petri; +Cc: igt-dev
> -----Original Message-----
> From: Latvala, Petri <petri.latvala@intel.com>
> Sent: 15 June 2022 07:57 PM
> To: Dandamudi, Priyanka <priyanka.dandamudi@intel.com>
> Cc: igt-dev@lists.freedesktop.org
> Subject: Re: [igt-dev] [PATCH] tests/i915/i915_module_load: Test resizable
> bar support
>
> On Wed, Jun 15, 2022 at 02:20:17PM +0300, Dandamudi, Priyanka wrote:
> >
> >
> > > -----Original Message-----
> > > From: Latvala, Petri <petri.latvala@intel.com>
> > > Sent: 15 June 2022 12:09 PM
> > > To: Dandamudi, Priyanka <priyanka.dandamudi@intel.com>
> > > Cc: Auld, Matthew <matthew.auld@intel.com>;
> > > igt-dev@lists.freedesktop.org
> > > Subject: Re: [igt-dev] [PATCH] tests/i915/i915_module_load: Test
> > > resizable bar support
> > >
> > > On Wed, Jun 15, 2022 at 11:11:46AM +0530,
> > > priyanka.dandamudi@intel.com
> > > wrote:
> > > > From: Priyanka Dandamudi <priyanka.dandamudi@intel.com>
> > > >
> > > > New test named resize bar has been added which tests whether bar
> > > > gets resized with different supported sizes.
> > > >
> > > > Cc: Matthew Auld <matthew.auld@intel.com>
> > > > Signed-off-by: Priyanka Dandamudi <priyanka.dandamudi@intel.com>
> > > > ---
> > > > tests/i915/i915_module_load.c | 64
> > > > +++++++++++++++++++++++++++++++++++
> > > > 1 file changed, 64 insertions(+)
> > > >
> > > > diff --git a/tests/i915/i915_module_load.c
> > > > b/tests/i915/i915_module_load.c index f5f98acc2..b334ef612 100644
> > > > --- a/tests/i915/i915_module_load.c
> > > > +++ b/tests/i915/i915_module_load.c
> > > > @@ -37,6 +37,9 @@
> > > > #include "igt_sysfs.h"
> > > > #include "igt_core.h"
> > > >
> > > > +#define BAR_SIZE_SHIFT 20
> > > > +#define BYTE 1024
> > > > +
> > > > IGT_TEST_DESCRIPTION("Tests the i915 module loading.");
> > > >
> > > > static void store_all(int i915)
> > > > @@ -236,6 +239,28 @@ hda_dynamic_debug(bool enable)
> > > > fclose(fp);
> > > > }
> > > >
> > > > +static int driver_load_unload(struct
> > > > +drm_i915_query_memory_regions **regions, uint32_t
> lmem_bar_size) {
> > > > + int i915 = -1;
> > > > + char lmem_bar[64];
> > > > +
> > > > + igt_i915_driver_unload();
> > > > + if (lmem_bar_size == 0)
> > > > + igt_assert_eq(igt_i915_driver_load(NULL), 0);
> > > > + else {
> > > > + sprintf(lmem_bar, "lmem_bar_size=%u", lmem_bar_size);
> > > > + igt_assert_eq(igt_i915_driver_load(lmem_bar), 0);
> > > > + }
> > > > +
> > > > + i915 = __drm_open_driver(DRIVER_INTEL);
> > > > + igt_require_fd(i915);
> > > > + igt_require(gem_has_lmem(i915));
> > > > + *regions = gem_get_query_memory_regions(i915);
> > > > + igt_require(*regions);
> > > > +
> > > > + return i915;
> > > > +}
> > > > +
> > > > igt_main
> > > > {
> > > > igt_describe("Verify the basic functionality of i915 driver
> > > > after it's reloaded."); @@ -286,5 +311,44 @@ igt_main
> > > > /* inject_fault() leaves the module unloaded */
> > > > }
> > > >
> > > > + igt_subtest("resize-bar") {
> > > > + struct drm_i915_query_memory_regions *regions;
> > > > + struct drm_i915_memory_region_info *region;
> > > > + uint32_t lmem_bar_size;
> > > > + uint32_t small_bar;
> > > > + bool bar_check = false;
> > > > + int i915 = -1;
> > > > +
> > > > + i915 = driver_load_unload(®ions, 0);
> > >
> > > Before the unload, do this:
> > >
> > > i915 = drm_open_driver(DRIVER_INTEL);
> > > igt_require(gem_has_lmem(i915); close(i915);
> > >
> > [Dandamudi, Priyanka]
> > The above work iam doing in driver_load_unload method.
>
> There the check is done after the unload. What I want is checking for lmem
> before unload so we can avoid the unload, on integrated.
>
> >
> > > That way we can avoid an unnecessary reload cycle on integrated.
> > >
> > > Which kernel version has the lmem_bar_size parameter? You might want
> > > to check its existence too. gem_lmem_swapping has an example of how
> > > it's done, with the param "lmem_size".
> > >
> > >
> > > --
> > > Petri Latvala
> > >
> > [Dandamudi, Priyanka]
> > lmem_size will also allow to resize the bar eg:62MB which is not expected
> as 256MB is the minimum size.
> > lmem_bar_size is a new modparam which is being added from the driver
> side to test different supported sizes.
>
> Yes, I didn't mean to use the same modparam. I meant to handle checking
> for existence in the same way it's done for that other param.
>
>
> --
> Petri Latvala
[Dandamudi, Priyanka]
Will incorporate the suggested changes in next version. Thanks
>
>
> > >
> > >
> > > > +
> > > > + for (unsigned int i = 0; i < (regions)->num_regions; i++)
> > > > + for_each_if(((region) = &(regions)->regions[i])-
> > > >region.memory_class == I915_MEMORY_CLASS_DEVICE) {
> > > > + lmem_bar_size = ceil((float)(region-
> > > >probed_size >> BAR_SIZE_SHIFT)/BYTE)*BYTE;
> > > > + small_bar = (region->rsvd1[0] >>
> > > BAR_SIZE_SHIFT);
> > > > + if (small_bar < lmem_bar_size)
> > > > + bar_check = true;
> > > > + }
> > > > + while (lmem_bar_size >= 256) {
> > > > +
> > > > + close(i915);
> > > > +
> > > > + i915 = driver_load_unload(®ions, lmem_bar_size);
> > > > +
> > > > + for (unsigned int i = 0; i < (regions)->num_regions; i++)
> > > > + for_each_if(((region) = &(regions)->regions[i])-
> > > >region.memory_class == I915_MEMORY_CLASS_DEVICE) {
> > > > + igt_assert_f(((region->probed_size >>
> > > BAR_SIZE_SHIFT) == lmem_bar_size),
> > > > + "Failed to set bar
> > > size");
> > > > + if (bar_check)
> > > > + igt_assert_f((small_bar ==
> > > (region->rsvd1[0] >> BAR_SIZE_SHIFT)),
> > > > + "Small bar is
> > > not set properly");
> > > > + else
> > > > + igt_assert_f(region-
> > > >probed_size == region->rsvd1[0], "Small bar and"
> > > > + " lmem bar
> > > values need to be same");
> > > > + }
> > > > + lmem_bar_size = lmem_bar_size >> 1;
> > > > + }
> > > > + igt_i915_driver_unload();
> > > > + }
> > > > +
> > > > /* Subtests should unload the module themselves if they use
> > > modparams */
> > > > }
> > > > --
> > > > 2.27.0
> > > >
^ permalink raw reply [flat|nested] 6+ messages in thread
end of thread, other threads:[~2022-06-16 8:25 UTC | newest]
Thread overview: 6+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2022-06-15 5:41 [igt-dev] [PATCH] tests/i915/i915_module_load: Test resizable bar support priyanka.dandamudi
2022-06-15 6:38 ` Petri Latvala
2022-06-15 11:20 ` Dandamudi, Priyanka
2022-06-15 14:27 ` Petri Latvala
2022-06-16 8:25 ` Dandamudi, Priyanka
2022-06-15 8:41 ` [igt-dev] ✗ Fi.CI.BUILD: failure for " Patchwork
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