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gpu: nvgpu: vgpu: support reduced BAR1 range

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Going forward, only the guest-accessible BAR1 range will be
contained in the DT. Full-range BAR1 support is maintained for
backwards-compatibility.

JIRA VFND-1373

Change-Id: I5c46d670fe65a333fbef7745d1e886d53af39d73
Signed-off-by: Aingara Paramakuru <aparamakuru@nvidia.com>
Reviewed-on: http://git-master/r/1122107
GVS: Gerrit_Virtual_Submit
Reviewed-by: Richard Zhao <rizhao@nvidia.com>
Reviewed-by: Vladislav Buzov <vbuzov@nvidia.com>
This commit is contained in:
Aingara Paramakuru
2016-04-07 18:56:46 -04:00
committed by Vladislav Buzov
parent f6e000a391
commit 2adf9164d9
1 changed files with 6 additions and 0 deletions
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6
drivers/gpu/nvgpu/vgpu/fifo_vgpu.c
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@@ -233,6 +233,7 @@ clean_up:
static int vgpu_init_fifo_setup_sw(struct gk20a *g) static int vgpu_init_fifo_setup_sw(struct gk20a *g)
{ {
struct gk20a_platform *platform = gk20a_get_platform(g->dev); struct gk20a_platform *platform = gk20a_get_platform(g->dev);
struct resource *r = platform_get_resource(g->dev, IORESOURCE_MEM, 0);
struct fifo_gk20a *f = &g->fifo; struct fifo_gk20a *f = &g->fifo;
struct device *d = dev_from_gk20a(g); struct device *d = dev_from_gk20a(g);
int chid, err = 0; int chid, err = 0;
@@ -270,6 +271,11 @@ static int vgpu_init_fifo_setup_sw(struct gk20a *g)
goto clean_up; goto clean_up;
} }
/* if reduced BAR1 range is specified, use offset of 0
(server returns offset assuming full BAR1 range) */
if (resource_size(r) == (resource_size_t)f->userd.size)
f->userd.gpu_va = 0;
gk20a_dbg(gpu_dbg_map, "userd bar1 va = 0x%llx", f->userd.gpu_va); gk20a_dbg(gpu_dbg_map, "userd bar1 va = 0x%llx", f->userd.gpu_va);
f->channel = kzalloc(f->num_channels * sizeof(*f->channel), f->channel = kzalloc(f->num_channels * sizeof(*f->channel),