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path: root/drivers/gpu/drm/nouveau/core/subdev/fb/ramnvc0.c
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Diffstat (limited to 'drivers/gpu/drm/nouveau/core/subdev/fb/ramnvc0.c')
-rw-r--r--drivers/gpu/drm/nouveau/core/subdev/fb/ramnvc0.c186
1 files changed, 186 insertions, 0 deletions
diff --git a/drivers/gpu/drm/nouveau/core/subdev/fb/ramnvc0.c b/drivers/gpu/drm/nouveau/core/subdev/fb/ramnvc0.c
new file mode 100644
index 000000000000..9c3634acbb9d
--- /dev/null
+++ b/drivers/gpu/drm/nouveau/core/subdev/fb/ramnvc0.c
@@ -0,0 +1,186 @@
+/*
+ * Copyright 2013 Red Hat Inc.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
+ * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+ * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ *
+ * Authors: Ben Skeggs
+ */
+
+#include <subdev/bios.h>
+#include <subdev/ltcg.h>
+
+#include "priv.h"
+
+extern const u8 nvc0_pte_storage_type_map[256];
+
+void
+nvc0_ram_put(struct nouveau_fb *pfb, struct nouveau_mem **pmem)
+{
+ struct nouveau_ltcg *ltcg = nouveau_ltcg(pfb);
+
+ if ((*pmem)->tag)
+ ltcg->tags_free(ltcg, &(*pmem)->tag);
+
+ nv50_ram_put(pfb, pmem);
+}
+
+int
+nvc0_ram_get(struct nouveau_fb *pfb, u64 size, u32 align, u32 ncmin,
+ u32 memtype, struct nouveau_mem **pmem)
+{
+ struct nouveau_mm *mm = &pfb->vram;
+ struct nouveau_mm_node *r;
+ struct nouveau_mem *mem;
+ int type = (memtype & 0x0ff);
+ int back = (memtype & 0x800);
+ const bool comp = nvc0_pte_storage_type_map[type] != type;
+ int ret;
+
+ size >>= 12;
+ align >>= 12;
+ ncmin >>= 12;
+ if (!ncmin)
+ ncmin = size;
+
+ mem = kzalloc(sizeof(*mem), GFP_KERNEL);
+ if (!mem)
+ return -ENOMEM;
+
+ INIT_LIST_HEAD(&mem->regions);
+ mem->size = size;
+
+ mutex_lock(&pfb->base.mutex);
+ if (comp) {
+ struct nouveau_ltcg *ltcg = nouveau_ltcg(pfb);
+
+ /* compression only works with lpages */
+ if (align == (1 << (17 - 12))) {
+ int n = size >> 5;
+ ltcg->tags_alloc(ltcg, n, &mem->tag);
+ }
+
+ if (unlikely(!mem->tag))
+ type = nvc0_pte_storage_type_map[type];
+ }
+ mem->memtype = type;
+
+ do {
+ if (back)
+ ret = nouveau_mm_tail(mm, 1, size, ncmin, align, &r);
+ else
+ ret = nouveau_mm_head(mm, 1, size, ncmin, align, &r);
+ if (ret) {
+ mutex_unlock(&pfb->base.mutex);
+ pfb->ram->put(pfb, &mem);
+ return ret;
+ }
+
+ list_add_tail(&r->rl_entry, &mem->regions);
+ size -= r->length;
+ } while (size);
+ mutex_unlock(&pfb->base.mutex);
+
+ r = list_first_entry(&mem->regions, struct nouveau_mm_node, rl_entry);
+ mem->offset = (u64)r->offset << 12;
+ *pmem = mem;
+ return 0;
+}
+
+static int
+nvc0_ram_create(struct nouveau_object *parent, struct nouveau_object *engine,
+ struct nouveau_oclass *oclass, void *data, u32 size,
+ struct nouveau_object **pobject)
+{
+ struct nouveau_fb *pfb = nouveau_fb(parent);
+ struct nouveau_bios *bios = nouveau_bios(pfb);
+ struct nouveau_ram *ram;
+ const u32 rsvd_head = ( 256 * 1024) >> 12; /* vga memory */
+ const u32 rsvd_tail = (1024 * 1024) >> 12; /* vbios etc */
+ u32 parts = nv_rd32(pfb, 0x022438);
+ u32 pmask = nv_rd32(pfb, 0x022554);
+ u32 bsize = nv_rd32(pfb, 0x10f20c);
+ u32 offset, length;
+ bool uniform = true;
+ int ret, part;
+
+ ret = nouveau_ram_create(parent, engine, oclass, &ram);
+ *pobject = nv_object(ram);
+ if (ret)
+ return ret;
+
+ nv_debug(pfb, "0x100800: 0x%08x\n", nv_rd32(pfb, 0x100800));
+ nv_debug(pfb, "parts 0x%08x mask 0x%08x\n", parts, pmask);
+
+ ram->type = nouveau_fb_bios_memtype(bios);
+ ram->ranks = (nv_rd32(pfb, 0x10f200) & 0x00000004) ? 2 : 1;
+
+ /* read amount of vram attached to each memory controller */
+ for (part = 0; part < parts; part++) {
+ if (!(pmask & (1 << part))) {
+ u32 psize = nv_rd32(pfb, 0x11020c + (part * 0x1000));
+ if (psize != bsize) {
+ if (psize < bsize)
+ bsize = psize;
+ uniform = false;
+ }
+
+ nv_debug(pfb, "%d: mem_amount 0x%08x\n", part, psize);
+ ram->size += (u64)psize << 20;
+ }
+ }
+
+ /* if all controllers have the same amount attached, there's no holes */
+ if (uniform) {
+ offset = rsvd_head;
+ length = (ram->size >> 12) - rsvd_head - rsvd_tail;
+ ret = nouveau_mm_init(&pfb->vram, offset, length, 1);
+ } else {
+ /* otherwise, address lowest common amount from 0GiB */
+ ret = nouveau_mm_init(&pfb->vram, rsvd_head,
+ (bsize << 8) * parts, 1);
+ if (ret)
+ return ret;
+
+ /* and the rest starting from (8GiB + common_size) */
+ offset = (0x0200000000ULL >> 12) + (bsize << 8);
+ length = (ram->size >> 12) - (bsize << 8) - rsvd_tail;
+
+ ret = nouveau_mm_init(&pfb->vram, offset, length, 0);
+ if (ret)
+ nouveau_mm_fini(&pfb->vram);
+ }
+
+ if (ret)
+ return ret;
+
+ ram->get = nvc0_ram_get;
+ ram->put = nvc0_ram_put;
+ return 0;
+}
+
+struct nouveau_oclass
+nvc0_ram_oclass = {
+ .handle = 0,
+ .ofuncs = &(struct nouveau_ofuncs) {
+ .ctor = nvc0_ram_create,
+ .dtor = _nouveau_ram_dtor,
+ .init = _nouveau_ram_init,
+ .fini = _nouveau_ram_fini,
+ }
+};