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drm/i915/gvt: Factor out intel_vgpu_{get, put}_ppgtt_mm interface 

Factor out these two interfaces so we can kill some duplicated code in
scheduler.c.

v2:
  - rename to intel_vgpu_{get,put}_ppgtt_mm
  - refine handle_g2v_notification

Signed-off-by: Changbin Du <changbin.du@intel.com>
Reviewed-by: Zhi Wang <zhi.a.wang@intel.com>
Signed-off-by: Zhenyu Wang <zhenyuw@linux.intel.com>
This commit is contained in:
Changbin Du 2018-01-30 19:19:46 +08:00 committed by Zhenyu Wang
parent a143cef7db
commit e6e9c46fd2
4 changed files with 21 additions and 43 deletions
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23
drivers/gpu/drm/i915/gvt/gtt.c
View File

@ -2292,19 +2292,17 @@ struct intel_vgpu_mm *intel_vgpu_find_ppgtt_mm(struct intel_vgpu *vgpu,
}
/**
* intel_vgpu_g2v_create_ppgtt_mm - create a PPGTT mm object from
* g2v notification
* intel_vgpu_get_ppgtt_mm - get or create a PPGTT mm object.
* @vgpu: a vGPU
* @root_entry_type: ppgtt root entry type
* @pdps: guest pdps
*
* This function is used to create a PPGTT mm object from a guest to GVT-g
* notification.
* This function is used to find or create a PPGTT mm object from a guest.
*
* Returns:
* Zero on success, negative error code if failed.
*/
int intel_vgpu_g2v_create_ppgtt_mm(struct intel_vgpu *vgpu,
struct intel_vgpu_mm *intel_vgpu_get_ppgtt_mm(struct intel_vgpu *vgpu,
intel_gvt_gtt_type_t root_entry_type, u64 pdps[])
{
struct intel_vgpu_mm *mm;
@ -2314,28 +2312,23 @@ int intel_vgpu_g2v_create_ppgtt_mm(struct intel_vgpu *vgpu,
intel_vgpu_mm_get(mm);
} else {
mm = intel_vgpu_create_ppgtt_mm(vgpu, root_entry_type, pdps);
if (IS_ERR(mm)) {
if (IS_ERR(mm))
gvt_vgpu_err("fail to create mm\n");
return PTR_ERR(mm);
}
}
return 0;
return mm;
}
/**
* intel_vgpu_g2v_destroy_ppgtt_mm - destroy a PPGTT mm object from
* g2v notification
* intel_vgpu_put_ppgtt_mm - find and put a PPGTT mm object.
* @vgpu: a vGPU
* @pdps: guest pdps
*
* This function is used to create a PPGTT mm object from a guest to GVT-g
* notification.
* This function is used to find a PPGTT mm object from a guest and destroy it.
*
* Returns:
* Zero on success, negative error code if failed.
*/
int intel_vgpu_g2v_destroy_ppgtt_mm(struct intel_vgpu *vgpu,
u64 pdps[])
int intel_vgpu_put_ppgtt_mm(struct intel_vgpu *vgpu, u64 pdps[])
{
struct intel_vgpu_mm *mm;

4
drivers/gpu/drm/i915/gvt/gtt.h
View File

@ -275,10 +275,10 @@ unsigned long intel_vgpu_gma_to_gpa(struct intel_vgpu_mm *mm,
struct intel_vgpu_mm *intel_vgpu_find_ppgtt_mm(struct intel_vgpu *vgpu,
u64 pdps[]);
int intel_vgpu_g2v_create_ppgtt_mm(struct intel_vgpu *vgpu,
struct intel_vgpu_mm *intel_vgpu_get_ppgtt_mm(struct intel_vgpu *vgpu,
intel_gvt_gtt_type_t root_entry_type, u64 pdps[]);
int intel_vgpu_g2v_destroy_ppgtt_mm(struct intel_vgpu *vgpu, u64 pdps[]);
int intel_vgpu_put_ppgtt_mm(struct intel_vgpu *vgpu, u64 pdps[]);
int intel_vgpu_emulate_ggtt_mmio_read(struct intel_vgpu *vgpu,
unsigned int off, void *p_data, unsigned int bytes);

23
drivers/gpu/drm/i915/gvt/handlers.c
View File

@ -1139,28 +1139,21 @@ static int pvinfo_mmio_read(struct intel_vgpu *vgpu, unsigned int offset,
static int handle_g2v_notification(struct intel_vgpu *vgpu, int notification)
{
intel_gvt_gtt_type_t root_entry_type = GTT_TYPE_PPGTT_ROOT_L4_ENTRY;
struct intel_vgpu_mm *mm;
u64 *pdps;
int ret = 0;
pdps = (u64 *)&vgpu_vreg64_t(vgpu, vgtif_reg(pdp[0]));
switch (notification) {
case VGT_G2V_PPGTT_L3_PAGE_TABLE_CREATE:
ret = intel_vgpu_g2v_create_ppgtt_mm(vgpu,
GTT_TYPE_PPGTT_ROOT_L3_ENTRY,
pdps);
break;
case VGT_G2V_PPGTT_L3_PAGE_TABLE_DESTROY:
ret = intel_vgpu_g2v_destroy_ppgtt_mm(vgpu, pdps);
break;
root_entry_type = GTT_TYPE_PPGTT_ROOT_L3_ENTRY;
case VGT_G2V_PPGTT_L4_PAGE_TABLE_CREATE:
ret = intel_vgpu_g2v_create_ppgtt_mm(vgpu,
GTT_TYPE_PPGTT_ROOT_L4_ENTRY,
pdps);
break;
mm = intel_vgpu_get_ppgtt_mm(vgpu, root_entry_type, pdps);
return PTR_ERR_OR_ZERO(mm);
case VGT_G2V_PPGTT_L3_PAGE_TABLE_DESTROY:
case VGT_G2V_PPGTT_L4_PAGE_TABLE_DESTROY:
ret = intel_vgpu_g2v_destroy_ppgtt_mm(vgpu, pdps);
break;
return intel_vgpu_put_ppgtt_mm(vgpu, pdps);
case VGT_G2V_EXECLIST_CONTEXT_CREATE:
case VGT_G2V_EXECLIST_CONTEXT_DESTROY:
case 1: /* Remove this in guest driver. */
@ -1168,7 +1161,7 @@ static int handle_g2v_notification(struct intel_vgpu *vgpu, int notification)
default:
gvt_vgpu_err("Invalid PV notification %d\n", notification);
}
return ret;
return 0;
}
static int send_display_ready_uevent(struct intel_vgpu *vgpu, int ready)

14
drivers/gpu/drm/i915/gvt/scheduler.c
View File

@ -1198,18 +1198,10 @@ static int prepare_mm(struct intel_vgpu_workload *workload)
read_guest_pdps(workload->vgpu, workload->ring_context_gpa, (void *)pdps);
mm = intel_vgpu_find_ppgtt_mm(workload->vgpu, pdps);
if (mm) {
intel_vgpu_mm_get(mm);
} else {
mm = intel_vgpu_get_ppgtt_mm(workload->vgpu, root_entry_type, pdps);
if (IS_ERR(mm))
return PTR_ERR(mm);
mm = intel_vgpu_create_ppgtt_mm(workload->vgpu, root_entry_type,
pdps);
if (IS_ERR(mm)) {
gvt_vgpu_err("fail to create mm object.\n");
return PTR_ERR(mm);
}
}
workload->shadow_mm = mm;
return 0;
}