diff options
author | Terje Bergstrom <tbergstrom@nvidia.com> | 2018-05-25 13:27:10 -0400 |
---|---|---|
committer | Tejal Kudav <tkudav@nvidia.com> | 2018-06-14 09:44:07 -0400 |
commit | 27694ca572c4d7698b107c6713f0f0604b41c186 (patch) | |
tree | 60dc8a1a8518797fd95f82d1e02892a984911667 /drivers/gpu/nvgpu/gv11b/mm_gv11b.c | |
parent | 5c8f1619ce5ab1cf46484c8914fa29bcc208b9a0 (diff) |
gpu: nvgpu: Implement bus HAL for bar2 bind
Implement BAR2 bind as a bus HAL and remove the corresponding MM HAL.
BAR2 bind HW API is in bus.
JIRA NVGPU-588
Change-Id: I3a8391b00f1ba65f9ed28b633f1d52bf7c984230
Signed-off-by: Terje Bergstrom <tbergstrom@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/1730896
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>
Diffstat (limited to 'drivers/gpu/nvgpu/gv11b/mm_gv11b.c')
-rw-r--r-- | drivers/gpu/nvgpu/gv11b/mm_gv11b.c | 54 |
1 files changed, 1 insertions, 53 deletions
diff --git a/drivers/gpu/nvgpu/gv11b/mm_gv11b.c b/drivers/gpu/nvgpu/gv11b/mm_gv11b.c index 357b15d7..6c38365c 100644 --- a/drivers/gpu/nvgpu/gv11b/mm_gv11b.c +++ b/drivers/gpu/nvgpu/gv11b/mm_gv11b.c | |||
@@ -40,7 +40,6 @@ | |||
40 | 40 | ||
41 | #include <nvgpu/hw/gv11b/hw_fb_gv11b.h> | 41 | #include <nvgpu/hw/gv11b/hw_fb_gv11b.h> |
42 | #include <nvgpu/hw/gv11b/hw_gmmu_gv11b.h> | 42 | #include <nvgpu/hw/gv11b/hw_gmmu_gv11b.h> |
43 | #include <nvgpu/hw/gv11b/hw_bus_gv11b.h> | ||
44 | 43 | ||
45 | #define NVGPU_L3_ALLOC_BIT BIT(36) | 44 | #define NVGPU_L3_ALLOC_BIT BIT(36) |
46 | 45 | ||
@@ -236,7 +235,7 @@ int gv11b_init_mm_setup_hw(struct gk20a *g) | |||
236 | g->ops.fb.set_mmu_page_size(g); | 235 | g->ops.fb.set_mmu_page_size(g); |
237 | g->ops.fb.init_hw(g); | 236 | g->ops.fb.init_hw(g); |
238 | 237 | ||
239 | err = g->ops.mm.init_bar2_mm_hw_setup(g); | 238 | err = g->ops.bus.bar2_bind(g, &g->mm.bar2.inst_block); |
240 | if (err) | 239 | if (err) |
241 | return err; | 240 | return err; |
242 | 241 | ||
@@ -274,54 +273,3 @@ u64 gv11b_gpu_phys_addr(struct gk20a *g, | |||
274 | 273 | ||
275 | return phys; | 274 | return phys; |
276 | } | 275 | } |
277 | |||
278 | int gv11b_init_bar2_mm_hw_setup(struct gk20a *g) | ||
279 | { | ||
280 | struct mm_gk20a *mm = &g->mm; | ||
281 | struct nvgpu_mem *inst_block = &mm->bar2.inst_block; | ||
282 | u64 inst_pa = nvgpu_inst_block_addr(g, inst_block); | ||
283 | u32 reg_val; | ||
284 | struct nvgpu_timeout timeout; | ||
285 | u32 delay = GR_IDLE_CHECK_DEFAULT; | ||
286 | |||
287 | nvgpu_log_fn(g, " "); | ||
288 | |||
289 | g->ops.fb.set_mmu_page_size(g); | ||
290 | |||
291 | inst_pa = (u32)(inst_pa >> bus_bar2_block_ptr_shift_v()); | ||
292 | nvgpu_log_info(g, "bar2 inst block ptr: 0x%08x", (u32)inst_pa); | ||
293 | |||
294 | gk20a_writel(g, bus_bar2_block_r(), | ||
295 | nvgpu_aperture_mask(g, inst_block, | ||
296 | bus_bar2_block_target_sys_mem_ncoh_f(), | ||
297 | bus_bar2_block_target_sys_mem_coh_f(), | ||
298 | bus_bar2_block_target_vid_mem_f()) | | ||
299 | bus_bar2_block_mode_virtual_f() | | ||
300 | bus_bar2_block_ptr_f(inst_pa)); | ||
301 | |||
302 | /* This is needed as BAR1 support is removed and there is no way | ||
303 | * to know if gpu successfully accessed memory. | ||
304 | * To avoid deadlocks and non-deterministic virtual address translation | ||
305 | * behavior, after writing BAR2_BLOCK to bind BAR2 to a virtual address | ||
306 | * space, SW must ensure that the bind has completed prior to issuing | ||
307 | * any further BAR2 requests by polling for both | ||
308 | * BUS_BIND_STATUS_BAR2_PENDING to return to EMPTY and | ||
309 | * BUS_BIND_STATUS_BAR2_OUTSTANDING to return to FALSE | ||
310 | */ | ||
311 | nvgpu_timeout_init(g, &timeout, gk20a_get_gr_idle_timeout(g), | ||
312 | NVGPU_TIMER_CPU_TIMER); | ||
313 | nvgpu_log_info(g, "check bar2 bind status"); | ||
314 | do { | ||
315 | reg_val = gk20a_readl(g, bus_bind_status_r()); | ||
316 | |||
317 | if (!((reg_val & bus_bind_status_bar2_pending_busy_f()) || | ||
318 | (reg_val & bus_bind_status_bar2_outstanding_true_f()))) | ||
319 | return 0; | ||
320 | |||
321 | nvgpu_usleep_range(delay, delay * 2); | ||
322 | delay = min_t(u32, delay << 1, GR_IDLE_CHECK_MAX); | ||
323 | } while (!nvgpu_timeout_expired_msg(&timeout, "bar2 bind timedout")); | ||
324 | |||
325 | nvgpu_err(g, "bar2 bind failed. gpu unable to access memory"); | ||
326 | return -EBUSY; | ||
327 | } | ||