LXR linux/drivers/gpu/drm/nouveau/nvkm/subdev/instmem/nv40.c

   1/*
   2 * Copyright 2012 Red Hat Inc.
   3 *
   4 * Permission is hereby granted, free of charge, to any person obtaining a
   5 * copy of this software and associated documentation files (the "Software"),
   6 * to deal in the Software without restriction, including without limitation
   7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
   8 * and/or sell copies of the Software, and to permit persons to whom the
   9 * Software is furnished to do so, subject to the following conditions:
  10 *
  11 * The above copyright notice and this permission notice shall be included in
  12 * all copies or substantial portions of the Software.
  13 *
  14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  17 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
  18 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
  19 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
  20 * OTHER DEALINGS IN THE SOFTWARE.
  21 *
  22 * Authors: Ben Skeggs
  23 */
  24#define nv40_instmem(p) container_of((p), struct nv40_instmem, base)
  25#include "priv.h"
  26
  27#include <core/ramht.h>
  28#include <engine/gr/nv40.h>
  29
  30struct nv40_instmem {
  31        struct nvkm_instmem base;
  32        struct nvkm_mm heap;
  33        void __iomem *iomem;
  34};
  35
  36/******************************************************************************
  37 * instmem object implementation
  38 *****************************************************************************/
  39#define nv40_instobj(p) container_of((p), struct nv40_instobj, base.memory)
  40
  41struct nv40_instobj {
  42        struct nvkm_instobj base;
  43        struct nv40_instmem *imem;
  44        struct nvkm_mm_node *node;
  45};
  46
  47static void
  48nv40_instobj_wr32(struct nvkm_memory *memory, u64 offset, u32 data)
  49{
  50        struct nv40_instobj *iobj = nv40_instobj(memory);
  51        iowrite32_native(data, iobj->imem->iomem + iobj->node->offset + offset);
  52}
  53
  54static u32
  55nv40_instobj_rd32(struct nvkm_memory *memory, u64 offset)
  56{
  57        struct nv40_instobj *iobj = nv40_instobj(memory);
  58        return ioread32_native(iobj->imem->iomem + iobj->node->offset + offset);
  59}
  60
  61static const struct nvkm_memory_ptrs
  62nv40_instobj_ptrs = {
  63        .rd32 = nv40_instobj_rd32,
  64        .wr32 = nv40_instobj_wr32,
  65};
  66
  67static void
  68nv40_instobj_release(struct nvkm_memory *memory)
  69{
  70        wmb();
  71}
  72
  73static void __iomem *
  74nv40_instobj_acquire(struct nvkm_memory *memory)
  75{
  76        struct nv40_instobj *iobj = nv40_instobj(memory);
  77        return iobj->imem->iomem + iobj->node->offset;
  78}
  79
  80static u64
  81nv40_instobj_size(struct nvkm_memory *memory)
  82{
  83        return nv40_instobj(memory)->node->length;
  84}
  85
  86static u64
  87nv40_instobj_addr(struct nvkm_memory *memory)
  88{
  89        return nv40_instobj(memory)->node->offset;
  90}
  91
  92static enum nvkm_memory_target
  93nv40_instobj_target(struct nvkm_memory *memory)
  94{
  95        return NVKM_MEM_TARGET_INST;
  96}
  97
  98static void *
  99nv40_instobj_dtor(struct nvkm_memory *memory)
 100{
 101        struct nv40_instobj *iobj = nv40_instobj(memory);
 102        mutex_lock(&iobj->imem->base.mutex);
 103        nvkm_mm_free(&iobj->imem->heap, &iobj->node);
 104        mutex_unlock(&iobj->imem->base.mutex);
 105        nvkm_instobj_dtor(&iobj->imem->base, &iobj->base);
 106        return iobj;
 107}
 108
 109static const struct nvkm_memory_func
 110nv40_instobj_func = {
 111        .dtor = nv40_instobj_dtor,
 112        .target = nv40_instobj_target,
 113        .size = nv40_instobj_size,
 114        .addr = nv40_instobj_addr,
 115        .acquire = nv40_instobj_acquire,
 116        .release = nv40_instobj_release,
 117};
 118
 119static int
 120nv40_instobj_new(struct nvkm_instmem *base, u32 size, u32 align, bool zero,
 121                 struct nvkm_memory **pmemory)
 122{
 123        struct nv40_instmem *imem = nv40_instmem(base);
 124        struct nv40_instobj *iobj;
 125        int ret;
 126
 127        if (!(iobj = kzalloc(sizeof(*iobj), GFP_KERNEL)))
 128                return -ENOMEM;
 129        *pmemory = &iobj->base.memory;
 130
 131        nvkm_instobj_ctor(&nv40_instobj_func, &imem->base, &iobj->base);
 132        iobj->base.memory.ptrs = &nv40_instobj_ptrs;
 133        iobj->imem = imem;
 134
 135        mutex_lock(&imem->base.mutex);
 136        ret = nvkm_mm_head(&imem->heap, 0, 1, size, size, align ? align : 1, &iobj->node);
 137        mutex_unlock(&imem->base.mutex);
 138        return ret;
 139}
 140
 141/******************************************************************************
 142 * instmem subdev implementation
 143 *****************************************************************************/
 144
 145static u32
 146nv40_instmem_rd32(struct nvkm_instmem *base, u32 addr)
 147{
 148        return ioread32_native(nv40_instmem(base)->iomem + addr);
 149}
 150
 151static void
 152nv40_instmem_wr32(struct nvkm_instmem *base, u32 addr, u32 data)
 153{
 154        iowrite32_native(data, nv40_instmem(base)->iomem + addr);
 155}
 156
 157static int
 158nv40_instmem_oneinit(struct nvkm_instmem *base)
 159{
 160        struct nv40_instmem *imem = nv40_instmem(base);
 161        struct nvkm_device *device = imem->base.subdev.device;
 162        int ret, vs;
 163
 164        /* PRAMIN aperture maps over the end of vram, reserve enough space
 165         * to fit graphics contexts for every channel, the magics come
 166         * from engine/gr/nv40.c
 167         */
 168        vs = hweight8((nvkm_rd32(device, 0x001540) & 0x0000ff00) >> 8);
 169        if      (device->chipset == 0x40) imem->base.reserved = 0x6aa0 * vs;
 170        else if (device->chipset  < 0x43) imem->base.reserved = 0x4f00 * vs;
 171        else if (nv44_gr_class(device))   imem->base.reserved = 0x4980 * vs;
 172        else                              imem->base.reserved = 0x4a40 * vs;
 173        imem->base.reserved += 16 * 1024;
 174        imem->base.reserved *= 32;              /* per-channel */
 175        imem->base.reserved += 512 * 1024;      /* pci(e)gart table */
 176        imem->base.reserved += 512 * 1024;      /* object storage */
 177        imem->base.reserved = round_up(imem->base.reserved, 4096);
 178
 179        ret = nvkm_mm_init(&imem->heap, 0, 0, imem->base.reserved, 1);
 180        if (ret)
 181                return ret;
 182
 183        /* 0x00000-0x10000: reserve for probable vbios image */
 184        ret = nvkm_memory_new(device, NVKM_MEM_TARGET_INST, 0x10000, 0, false,
 185                              &imem->base.vbios);
 186        if (ret)
 187                return ret;
 188
 189        /* 0x10000-0x18000: reserve for RAMHT */
 190        ret = nvkm_ramht_new(device, 0x08000, 0, NULL, &imem->base.ramht);
 191        if (ret)
 192                return ret;
 193
 194        /* 0x18000-0x18200: reserve for RAMRO
 195         * 0x18200-0x20000: padding
 196         */
 197        ret = nvkm_memory_new(device, NVKM_MEM_TARGET_INST, 0x08000, 0, false,
 198                              &imem->base.ramro);
 199        if (ret)
 200                return ret;
 201
 202        /* 0x20000-0x21000: reserve for RAMFC
 203         * 0x21000-0x40000: padding and some unknown crap
 204         */
 205        ret = nvkm_memory_new(device, NVKM_MEM_TARGET_INST, 0x20000, 0, true,
 206                              &imem->base.ramfc);
 207        if (ret)
 208                return ret;
 209
 210        return 0;
 211}
 212
 213static void *
 214nv40_instmem_dtor(struct nvkm_instmem *base)
 215{
 216        struct nv40_instmem *imem = nv40_instmem(base);
 217        nvkm_memory_unref(&imem->base.ramfc);
 218        nvkm_memory_unref(&imem->base.ramro);
 219        nvkm_ramht_del(&imem->base.ramht);
 220        nvkm_memory_unref(&imem->base.vbios);
 221        nvkm_mm_fini(&imem->heap);
 222        if (imem->iomem)
 223                iounmap(imem->iomem);
 224        return imem;
 225}
 226
 227static const struct nvkm_instmem_func
 228nv40_instmem = {
 229        .dtor = nv40_instmem_dtor,
 230        .oneinit = nv40_instmem_oneinit,
 231        .rd32 = nv40_instmem_rd32,
 232        .wr32 = nv40_instmem_wr32,
 233        .memory_new = nv40_instobj_new,
 234        .zero = false,
 235};
 236
 237int
 238nv40_instmem_new(struct nvkm_device *device, enum nvkm_subdev_type type, int inst,
 239                 struct nvkm_instmem **pimem)
 240{
 241        struct nv40_instmem *imem;
 242        int bar;
 243
 244        if (!(imem = kzalloc(sizeof(*imem), GFP_KERNEL)))
 245                return -ENOMEM;
 246        nvkm_instmem_ctor(&nv40_instmem, device, type, inst, &imem->base);
 247        *pimem = &imem->base;
 248
 249        /* map bar */
 250        if (device->func->resource_size(device, 2))
 251                bar = 2;
 252        else
 253                bar = 3;
 254
 255        imem->iomem = ioremap_wc(device->func->resource_addr(device, bar),
 256                                 device->func->resource_size(device, bar));
 257        if (!imem->iomem) {
 258                nvkm_error(&imem->base.subdev, "unable to map PRAMIN BAR\n");
 259                return -EFAULT;
 260        }
 261
 262        return 0;
 263}
 264