[Mesa-dev] [PATCH 3/6] nvc0: add nvc0_screen_resize_text_area() helper

[Samuel Pitoiset]

This function will be helpful for resizing the code segment
area when we need to evict all shaders.

Signed-off-by: Samuel Pitoiset <samuel.pitoiset at gmail.com>
---
 src/gallium/drivers/nouveau/nvc0/nvc0_context.h |  1 +
 src/gallium/drivers/nouveau/nvc0/nvc0_screen.c  | 47 +++++++++++++++++++------
 src/gallium/drivers/nouveau/nvc0/nvc0_screen.h  |  2 ++
 3 files changed, 40 insertions(+), 10 deletions(-)

diff --git a/src/gallium/drivers/nouveau/nvc0/nvc0_context.h b/src/gallium/drivers/nouveau/nvc0/nvc0_context.h
index ae65f8a..6499f3e 100644
--- a/src/gallium/drivers/nouveau/nvc0/nvc0_context.h
+++ b/src/gallium/drivers/nouveau/nvc0/nvc0_context.h
@@ -27,6 +27,7 @@
 #include "nv50/nv50_2d.xml.h"
 #include "nvc0/nvc0_m2mf.xml.h"
 #include "nvc0/nve4_p2mf.xml.h"
+#include "nvc0/nvc0_compute.xml.h"
 #include "nvc0/nvc0_macros.h"
 
 /* NOTE: must keep NVC0_NEW_3D_...PROG in consecutive bits in this order */
diff --git a/src/gallium/drivers/nouveau/nvc0/nvc0_screen.c b/src/gallium/drivers/nouveau/nvc0/nvc0_screen.c
index a4f1605..6c6d177 100644
--- a/src/gallium/drivers/nouveau/nvc0/nvc0_screen.c
+++ b/src/gallium/drivers/nouveau/nvc0/nvc0_screen.c
@@ -701,6 +701,42 @@ nvc0_screen_resize_tls_area(struct nvc0_screen *screen,
    return 0;
 }
 
+int
+nvc0_screen_resize_text_area(struct nvc0_screen *screen, uint64_t size)
+{
+   struct nouveau_pushbuf *push = screen->base.pushbuf;
+   struct nouveau_bo *bo;
+   int ret;
+
+   ret = nouveau_bo_new(screen->base.device, NV_VRAM_DOMAIN(&screen->base),
+                        1 << 17, size, NULL, &bo);
+   if (ret)
+      return ret;
+
+   nouveau_bo_ref(NULL, &screen->text);
+   screen->text = bo;
+
+   nouveau_heap_destroy(&screen->lib_code);
+   nouveau_heap_destroy(&screen->text_heap);
+
+   /* XXX: getting a page fault at the end of the code buffer every few
+    *  launches, don't use the last 256 bytes to work around them - prefetch ?
+    */
+   nouveau_heap_init(&screen->text_heap, 0, size - 0x100);
+
+   /* update the code segment setup */
+   BEGIN_NVC0(push, NVC0_3D(CODE_ADDRESS_HIGH), 2);
+   PUSH_DATAh(push, screen->text->offset);
+   PUSH_DATA (push, screen->text->offset);
+   if (screen->compute) {
+      BEGIN_NVC0(push, NVC0_CP(CODE_ADDRESS_HIGH), 2);
+      PUSH_DATAh(push, screen->text->offset);
+      PUSH_DATA (push, screen->text->offset);
+   }
+
+   return 0;
+}
+
 #define FAIL_SCREEN_INIT(str, err)                    \
    do {                                               \
       NOUVEAU_ERR(str, err);                          \
@@ -951,16 +987,10 @@ nvc0_screen_create(struct nouveau_device *dev)
 
    nvc0_magic_3d_init(push, screen->eng3d->oclass);
 
-   ret = nouveau_bo_new(dev, NV_VRAM_DOMAIN(&screen->base), 1 << 17, 1 << 20, NULL,
-                        &screen->text);
+   ret = nvc0_screen_resize_text_area(screen, 1 << 20);
    if (ret)
       FAIL_SCREEN_INIT("Error allocating TEXT area: %d\n", ret);
 
-   /* XXX: getting a page fault at the end of the code buffer every few
-    *  launches, don't use the last 256 bytes to work around them - prefetch ?
-    */
-   nouveau_heap_init(&screen->text_heap, 0, (1 << 20) - 0x100);
-
    ret = nouveau_bo_new(dev, NV_VRAM_DOMAIN(&screen->base), 1 << 12, 7 << 16, NULL,
                         &screen->uniform_bo);
    if (ret)
@@ -1044,9 +1074,6 @@ nvc0_screen_create(struct nouveau_device *dev)
    if (ret)
       FAIL_SCREEN_INIT("Error allocating TLS area: %d\n", ret);
 
-   BEGIN_NVC0(push, NVC0_3D(CODE_ADDRESS_HIGH), 2);
-   PUSH_DATAh(push, screen->text->offset);
-   PUSH_DATA (push, screen->text->offset);
    BEGIN_NVC0(push, NVC0_3D(TEMP_ADDRESS_HIGH), 4);
    PUSH_DATAh(push, screen->tls->offset);
    PUSH_DATA (push, screen->tls->offset);
diff --git a/src/gallium/drivers/nouveau/nvc0/nvc0_screen.h b/src/gallium/drivers/nouveau/nvc0/nvc0_screen.h
index 672d515..aff0308 100644
--- a/src/gallium/drivers/nouveau/nvc0/nvc0_screen.h
+++ b/src/gallium/drivers/nouveau/nvc0/nvc0_screen.h
@@ -136,6 +136,8 @@ int nvc0_screen_tsc_alloc(struct nvc0_screen *, void *);
 int nve4_screen_compute_setup(struct nvc0_screen *, struct nouveau_pushbuf *);
 int nvc0_screen_compute_setup(struct nvc0_screen *, struct nouveau_pushbuf *);
 
+int nvc0_screen_resize_text_area(struct nvc0_screen *, uint64_t);
+
 static inline void
 nvc0_resource_fence(struct nv04_resource *res, uint32_t flags)
 {
-- 
2.9.3