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linux/drivers/gpu/drm/vmwgfx/vmwgfx_resource.c

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/**************************************************************************
*
* Copyright © 2009 VMware, Inc., Palo Alto, CA., USA
* All Rights Reserved.
*
* 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, sub license, 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 (including the
* next paragraph) 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 NON-INFRINGEMENT. IN NO EVENT SHALL
* THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS 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.
*
**************************************************************************/
#include "vmwgfx_drv.h"
#include "vmwgfx_drm.h"
#include "ttm/ttm_object.h"
#include "ttm/ttm_placement.h"
#include "drmP.h"
struct vmw_user_context {
struct ttm_base_object base;
struct vmw_resource res;
};
struct vmw_user_surface {
struct ttm_base_object base;
struct vmw_surface srf;
uint32_t size;
};
struct vmw_user_dma_buffer {
struct ttm_base_object base;
struct vmw_dma_buffer dma;
};
struct vmw_bo_user_rep {
uint32_t handle;
uint64_t map_handle;
};
struct vmw_stream {
struct vmw_resource res;
uint32_t stream_id;
};
struct vmw_user_stream {
struct ttm_base_object base;
struct vmw_stream stream;
};
struct vmw_surface_offset {
uint32_t face;
uint32_t mip;
uint32_t bo_offset;
};
static uint64_t vmw_user_context_size;
static uint64_t vmw_user_surface_size;
static uint64_t vmw_user_stream_size;
static inline struct vmw_dma_buffer *
vmw_dma_buffer(struct ttm_buffer_object *bo)
{
return container_of(bo, struct vmw_dma_buffer, base);
}
static inline struct vmw_user_dma_buffer *
vmw_user_dma_buffer(struct ttm_buffer_object *bo)
{
struct vmw_dma_buffer *vmw_bo = vmw_dma_buffer(bo);
return container_of(vmw_bo, struct vmw_user_dma_buffer, dma);
}
struct vmw_resource *vmw_resource_reference(struct vmw_resource *res)
{
kref_get(&res->kref);
return res;
}
/**
* vmw_resource_release_id - release a resource id to the id manager.
*
* @res: Pointer to the resource.
*
* Release the resource id to the resource id manager and set it to -1
*/
static void vmw_resource_release_id(struct vmw_resource *res)
{
struct vmw_private *dev_priv = res->dev_priv;
write_lock(&dev_priv->resource_lock);
if (res->id != -1)
idr_remove(res->idr, res->id);
res->id = -1;
write_unlock(&dev_priv->resource_lock);
}
static void vmw_resource_release(struct kref *kref)
{
struct vmw_resource *res =
container_of(kref, struct vmw_resource, kref);
struct vmw_private *dev_priv = res->dev_priv;
int id = res->id;
struct idr *idr = res->idr;
res->avail = false;
if (res->remove_from_lists != NULL)
res->remove_from_lists(res);
write_unlock(&dev_priv->resource_lock);
if (likely(res->hw_destroy != NULL))
res->hw_destroy(res);
if (res->res_free != NULL)
res->res_free(res);
else
kfree(res);
write_lock(&dev_priv->resource_lock);
if (id != -1)
idr_remove(idr, id);
}
void vmw_resource_unreference(struct vmw_resource **p_res)
{
struct vmw_resource *res = *p_res;
struct vmw_private *dev_priv = res->dev_priv;
*p_res = NULL;
write_lock(&dev_priv->resource_lock);
kref_put(&res->kref, vmw_resource_release);
write_unlock(&dev_priv->resource_lock);
}
/**
* vmw_resource_alloc_id - release a resource id to the id manager.
*
* @dev_priv: Pointer to the device private structure.
* @res: Pointer to the resource.
*
* Allocate the lowest free resource from the resource manager, and set
* @res->id to that id. Returns 0 on success and -ENOMEM on failure.
*/
static int vmw_resource_alloc_id(struct vmw_private *dev_priv,
struct vmw_resource *res)
{
int ret;
BUG_ON(res->id != -1);
do {
if (unlikely(idr_pre_get(res->idr, GFP_KERNEL) == 0))
return -ENOMEM;
write_lock(&dev_priv->resource_lock);
ret = idr_get_new_above(res->idr, res, 1, &res->id);
write_unlock(&dev_priv->resource_lock);
} while (ret == -EAGAIN);
return ret;
}
static int vmw_resource_init(struct vmw_private *dev_priv,
struct vmw_resource *res,
struct idr *idr,
enum ttm_object_type obj_type,
bool delay_id,
void (*res_free) (struct vmw_resource *res),
void (*remove_from_lists)
(struct vmw_resource *res))
{
kref_init(&res->kref);
res->hw_destroy = NULL;
res->res_free = res_free;
res->remove_from_lists = remove_from_lists;
res->res_type = obj_type;
res->idr = idr;
res->avail = false;
res->dev_priv = dev_priv;
INIT_LIST_HEAD(&res->query_head);
INIT_LIST_HEAD(&res->validate_head);
res->id = -1;
if (delay_id)
return 0;
else
return vmw_resource_alloc_id(dev_priv, res);
}
/**
* vmw_resource_activate
*
* @res: Pointer to the newly created resource
* @hw_destroy: Destroy function. NULL if none.
*
* Activate a resource after the hardware has been made aware of it.
* Set tye destroy function to @destroy. Typically this frees the
* resource and destroys the hardware resources associated with it.
* Activate basically means that the function vmw_resource_lookup will
* find it.
*/
static void vmw_resource_activate(struct vmw_resource *res,
void (*hw_destroy) (struct vmw_resource *))
{
struct vmw_private *dev_priv = res->dev_priv;
write_lock(&dev_priv->resource_lock);
res->avail = true;
res->hw_destroy = hw_destroy;
write_unlock(&dev_priv->resource_lock);
}
struct vmw_resource *vmw_resource_lookup(struct vmw_private *dev_priv,
struct idr *idr, int id)
{
struct vmw_resource *res;
read_lock(&dev_priv->resource_lock);
res = idr_find(idr, id);
if (res && res->avail)
kref_get(&res->kref);
else
res = NULL;
read_unlock(&dev_priv->resource_lock);
if (unlikely(res == NULL))
return NULL;
return res;
}
/**
* Context management:
*/
static void vmw_hw_context_destroy(struct vmw_resource *res)
{
struct vmw_private *dev_priv = res->dev_priv;
struct {
SVGA3dCmdHeader header;
SVGA3dCmdDestroyContext body;
} *cmd;
vmw_execbuf_release_pinned_bo(dev_priv, true, res->id);
cmd = vmw_fifo_reserve(dev_priv, sizeof(*cmd));
if (unlikely(cmd == NULL)) {
DRM_ERROR("Failed reserving FIFO space for surface "
"destruction.\n");
return;
}
cmd->header.id = cpu_to_le32(SVGA_3D_CMD_CONTEXT_DESTROY);
cmd->header.size = cpu_to_le32(sizeof(cmd->body));
cmd->body.cid = cpu_to_le32(res->id);
vmw_fifo_commit(dev_priv, sizeof(*cmd));
vmw_3d_resource_dec(dev_priv, false);
}
static int vmw_context_init(struct vmw_private *dev_priv,
struct vmw_resource *res,
void (*res_free) (struct vmw_resource *res))
{
int ret;
struct {
SVGA3dCmdHeader header;
SVGA3dCmdDefineContext body;
} *cmd;
ret = vmw_resource_init(dev_priv, res, &dev_priv->context_idr,
VMW_RES_CONTEXT, false, res_free, NULL);
if (unlikely(ret != 0)) {
DRM_ERROR("Failed to allocate a resource id.\n");
goto out_early;
}
if (unlikely(res->id >= SVGA3D_MAX_CONTEXT_IDS)) {
DRM_ERROR("Out of hw context ids.\n");
vmw_resource_unreference(&res);
return -ENOMEM;
}
cmd = vmw_fifo_reserve(dev_priv, sizeof(*cmd));
if (unlikely(cmd == NULL)) {
DRM_ERROR("Fifo reserve failed.\n");
vmw_resource_unreference(&res);
return -ENOMEM;
}
cmd->header.id = cpu_to_le32(SVGA_3D_CMD_CONTEXT_DEFINE);
cmd->header.size = cpu_to_le32(sizeof(cmd->body));
cmd->body.cid = cpu_to_le32(res->id);
vmw_fifo_commit(dev_priv, sizeof(*cmd));
(void) vmw_3d_resource_inc(dev_priv, false);
vmw_resource_activate(res, vmw_hw_context_destroy);
return 0;
out_early:
if (res_free == NULL)
kfree(res);
else
res_free(res);
return ret;
}
struct vmw_resource *vmw_context_alloc(struct vmw_private *dev_priv)
{
struct vmw_resource *res = kmalloc(sizeof(*res), GFP_KERNEL);
int ret;
if (unlikely(res == NULL))
return NULL;
ret = vmw_context_init(dev_priv, res, NULL);
return (ret == 0) ? res : NULL;
}
/**
* User-space context management:
*/
static void vmw_user_context_free(struct vmw_resource *res)
{
struct vmw_user_context *ctx =
container_of(res, struct vmw_user_context, res);
struct vmw_private *dev_priv = res->dev_priv;
kfree(ctx);
ttm_mem_global_free(vmw_mem_glob(dev_priv),
vmw_user_context_size);
}
/**
* This function is called when user space has no more references on the
* base object. It releases the base-object's reference on the resource object.
*/
static void vmw_user_context_base_release(struct ttm_base_object **p_base)
{
struct ttm_base_object *base = *p_base;
struct vmw_user_context *ctx =
container_of(base, struct vmw_user_context, base);
struct vmw_resource *res = &ctx->res;
*p_base = NULL;
vmw_resource_unreference(&res);
}
int vmw_context_destroy_ioctl(struct drm_device *dev, void *data,
struct drm_file *file_priv)
{
struct vmw_private *dev_priv = vmw_priv(dev);
struct vmw_resource *res;
struct vmw_user_context *ctx;
struct drm_vmw_context_arg *arg = (struct drm_vmw_context_arg *)data;
struct ttm_object_file *tfile = vmw_fpriv(file_priv)->tfile;
int ret = 0;
res = vmw_resource_lookup(dev_priv, &dev_priv->context_idr, arg->cid);
if (unlikely(res == NULL))
return -EINVAL;
if (res->res_free != &vmw_user_context_free) {
ret = -EINVAL;
goto out;
}
ctx = container_of(res, struct vmw_user_context, res);
if (ctx->base.tfile != tfile && !ctx->base.shareable) {
ret = -EPERM;
goto out;
}
ttm_ref_object_base_unref(tfile, ctx->base.hash.key, TTM_REF_USAGE);
out:
vmw_resource_unreference(&res);
return ret;
}
int vmw_context_define_ioctl(struct drm_device *dev, void *data,
struct drm_file *file_priv)
{
struct vmw_private *dev_priv = vmw_priv(dev);
struct vmw_user_context *ctx;
struct vmw_resource *res;
struct vmw_resource *tmp;
struct drm_vmw_context_arg *arg = (struct drm_vmw_context_arg *)data;
struct ttm_object_file *tfile = vmw_fpriv(file_priv)->tfile;
struct vmw_master *vmaster = vmw_master(file_priv->master);
int ret;
/*
* Approximate idr memory usage with 128 bytes. It will be limited
* by maximum number_of contexts anyway.
*/
if (unlikely(vmw_user_context_size == 0))
vmw_user_context_size = ttm_round_pot(sizeof(*ctx)) + 128;
ret = ttm_read_lock(&vmaster->lock, true);
if (unlikely(ret != 0))
return ret;
ret = ttm_mem_global_alloc(vmw_mem_glob(dev_priv),
vmw_user_context_size,
false, true);
if (unlikely(ret != 0)) {
if (ret != -ERESTARTSYS)
DRM_ERROR("Out of graphics memory for context"
" creation.\n");
goto out_unlock;
}
ctx = kmalloc(sizeof(*ctx), GFP_KERNEL);
if (unlikely(ctx == NULL)) {
ttm_mem_global_free(vmw_mem_glob(dev_priv),
vmw_user_context_size);
ret = -ENOMEM;
goto out_unlock;
}
res = &ctx->res;
ctx->base.shareable = false;
ctx->base.tfile = NULL;
/*
* From here on, the destructor takes over resource freeing.
*/
ret = vmw_context_init(dev_priv, res, vmw_user_context_free);
if (unlikely(ret != 0))
goto out_unlock;
tmp = vmw_resource_reference(&ctx->res);
ret = ttm_base_object_init(tfile, &ctx->base, false, VMW_RES_CONTEXT,
&vmw_user_context_base_release, NULL);
if (unlikely(ret != 0)) {
vmw_resource_unreference(&tmp);
goto out_err;
}
arg->cid = res->id;
out_err:
vmw_resource_unreference(&res);
out_unlock:
ttm_read_unlock(&vmaster->lock);
return ret;
}
int vmw_context_check(struct vmw_private *dev_priv,
struct ttm_object_file *tfile,
int id,
struct vmw_resource **p_res)
{
struct vmw_resource *res;
int ret = 0;
read_lock(&dev_priv->resource_lock);
res = idr_find(&dev_priv->context_idr, id);
if (res && res->avail) {
struct vmw_user_context *ctx =
container_of(res, struct vmw_user_context, res);
if (ctx->base.tfile != tfile && !ctx->base.shareable)
ret = -EPERM;
if (p_res)
*p_res = vmw_resource_reference(res);
} else
ret = -EINVAL;
read_unlock(&dev_priv->resource_lock);
return ret;
}
struct vmw_bpp {
uint8_t bpp;
uint8_t s_bpp;
};
/*
* Size table for the supported SVGA3D surface formats. It consists of
* two values. The bpp value and the s_bpp value which is short for
* "stride bits per pixel" The values are given in such a way that the
* minimum stride for the image is calculated using
*
* min_stride = w*s_bpp
*
* and the total memory requirement for the image is
*
* h*min_stride*bpp/s_bpp
*
*/
static const struct vmw_bpp vmw_sf_bpp[] = {
[SVGA3D_FORMAT_INVALID] = {0, 0},
[SVGA3D_X8R8G8B8] = {32, 32},
[SVGA3D_A8R8G8B8] = {32, 32},
[SVGA3D_R5G6B5] = {16, 16},
[SVGA3D_X1R5G5B5] = {16, 16},
[SVGA3D_A1R5G5B5] = {16, 16},
[SVGA3D_A4R4G4B4] = {16, 16},
[SVGA3D_Z_D32] = {32, 32},
[SVGA3D_Z_D16] = {16, 16},
[SVGA3D_Z_D24S8] = {32, 32},
[SVGA3D_Z_D15S1] = {16, 16},
[SVGA3D_LUMINANCE8] = {8, 8},
[SVGA3D_LUMINANCE4_ALPHA4] = {8, 8},
[SVGA3D_LUMINANCE16] = {16, 16},
[SVGA3D_LUMINANCE8_ALPHA8] = {16, 16},
[SVGA3D_DXT1] = {4, 16},
[SVGA3D_DXT2] = {8, 32},
[SVGA3D_DXT3] = {8, 32},
[SVGA3D_DXT4] = {8, 32},
[SVGA3D_DXT5] = {8, 32},
[SVGA3D_BUMPU8V8] = {16, 16},
[SVGA3D_BUMPL6V5U5] = {16, 16},
[SVGA3D_BUMPX8L8V8U8] = {32, 32},
[SVGA3D_ARGB_S10E5] = {16, 16},
[SVGA3D_ARGB_S23E8] = {32, 32},
[SVGA3D_A2R10G10B10] = {32, 32},
[SVGA3D_V8U8] = {16, 16},
[SVGA3D_Q8W8V8U8] = {32, 32},
[SVGA3D_CxV8U8] = {16, 16},
[SVGA3D_X8L8V8U8] = {32, 32},
[SVGA3D_A2W10V10U10] = {32, 32},
[SVGA3D_ALPHA8] = {8, 8},
[SVGA3D_R_S10E5] = {16, 16},
[SVGA3D_R_S23E8] = {32, 32},
[SVGA3D_RG_S10E5] = {16, 16},
[SVGA3D_RG_S23E8] = {32, 32},
[SVGA3D_BUFFER] = {8, 8},
[SVGA3D_Z_D24X8] = {32, 32},
[SVGA3D_V16U16] = {32, 32},
[SVGA3D_G16R16] = {32, 32},
[SVGA3D_A16B16G16R16] = {64, 64},
[SVGA3D_UYVY] = {12, 12},
[SVGA3D_YUY2] = {12, 12},
[SVGA3D_NV12] = {12, 8},
[SVGA3D_AYUV] = {32, 32},
[SVGA3D_BC4_UNORM] = {4, 16},
[SVGA3D_BC5_UNORM] = {8, 32},
[SVGA3D_Z_DF16] = {16, 16},
[SVGA3D_Z_DF24] = {24, 24},
[SVGA3D_Z_D24S8_INT] = {32, 32}
};
/**
* Surface management.
*/
struct vmw_surface_dma {
SVGA3dCmdHeader header;
SVGA3dCmdSurfaceDMA body;
SVGA3dCopyBox cb;
SVGA3dCmdSurfaceDMASuffix suffix;
};
struct vmw_surface_define {
SVGA3dCmdHeader header;
SVGA3dCmdDefineSurface body;
};
struct vmw_surface_destroy {
SVGA3dCmdHeader header;
SVGA3dCmdDestroySurface body;
};
/**
* vmw_surface_dma_size - Compute fifo size for a dma command.
*
* @srf: Pointer to a struct vmw_surface
*
* Computes the required size for a surface dma command for backup or
* restoration of the surface represented by @srf.
*/
static inline uint32_t vmw_surface_dma_size(const struct vmw_surface *srf)
{
return srf->num_sizes * sizeof(struct vmw_surface_dma);
}
/**
* vmw_surface_define_size - Compute fifo size for a surface define command.
*
* @srf: Pointer to a struct vmw_surface
*
* Computes the required size for a surface define command for the definition
* of the surface represented by @srf.
*/
static inline uint32_t vmw_surface_define_size(const struct vmw_surface *srf)
{
return sizeof(struct vmw_surface_define) + srf->num_sizes *
sizeof(SVGA3dSize);
}
/**
* vmw_surface_destroy_size - Compute fifo size for a surface destroy command.
*
* Computes the required size for a surface destroy command for the destruction
* of a hw surface.
*/
static inline uint32_t vmw_surface_destroy_size(void)
{
return sizeof(struct vmw_surface_destroy);
}
/**
* vmw_surface_destroy_encode - Encode a surface_destroy command.
*
* @id: The surface id
* @cmd_space: Pointer to memory area in which the commands should be encoded.
*/
static void vmw_surface_destroy_encode(uint32_t id,
void *cmd_space)
{
struct vmw_surface_destroy *cmd = (struct vmw_surface_destroy *)
cmd_space;
cmd->header.id = SVGA_3D_CMD_SURFACE_DESTROY;
cmd->header.size = sizeof(cmd->body);
cmd->body.sid = id;
}
/**
* vmw_surface_define_encode - Encode a surface_define command.
*
* @srf: Pointer to a struct vmw_surface object.
* @cmd_space: Pointer to memory area in which the commands should be encoded.
*/
static void vmw_surface_define_encode(const struct vmw_surface *srf,
void *cmd_space)
{
struct vmw_surface_define *cmd = (struct vmw_surface_define *)
cmd_space;
struct drm_vmw_size *src_size;
SVGA3dSize *cmd_size;
uint32_t cmd_len;
int i;
cmd_len = sizeof(cmd->body) + srf->num_sizes * sizeof(SVGA3dSize);
cmd->header.id = SVGA_3D_CMD_SURFACE_DEFINE;
cmd->header.size = cmd_len;
cmd->body.sid = srf->res.id;
cmd->body.surfaceFlags = srf->flags;
cmd->body.format = cpu_to_le32(srf->format);
for (i = 0; i < DRM_VMW_MAX_SURFACE_FACES; ++i)
cmd->body.face[i].numMipLevels = srf->mip_levels[i];
cmd += 1;
cmd_size = (SVGA3dSize *) cmd;
src_size = srf->sizes;
for (i = 0; i < srf->num_sizes; ++i, cmd_size++, src_size++) {
cmd_size->width = src_size->width;
cmd_size->height = src_size->height;
cmd_size->depth = src_size->depth;
}
}
/**
* vmw_surface_dma_encode - Encode a surface_dma command.
*
* @srf: Pointer to a struct vmw_surface object.
* @cmd_space: Pointer to memory area in which the commands should be encoded.
* @ptr: Pointer to an SVGAGuestPtr indicating where the surface contents
* should be placed or read from.
* @to_surface: Boolean whether to DMA to the surface or from the surface.
*/
static void vmw_surface_dma_encode(struct vmw_surface *srf,
void *cmd_space,
const SVGAGuestPtr *ptr,
bool to_surface)
{
uint32_t i;
uint32_t bpp = vmw_sf_bpp[srf->format].bpp;
uint32_t stride_bpp = vmw_sf_bpp[srf->format].s_bpp;
struct vmw_surface_dma *cmd = (struct vmw_surface_dma *)cmd_space;
for (i = 0; i < srf->num_sizes; ++i) {
SVGA3dCmdHeader *header = &cmd->header;
SVGA3dCmdSurfaceDMA *body = &cmd->body;
SVGA3dCopyBox *cb = &cmd->cb;
SVGA3dCmdSurfaceDMASuffix *suffix = &cmd->suffix;
const struct vmw_surface_offset *cur_offset = &srf->offsets[i];
const struct drm_vmw_size *cur_size = &srf->sizes[i];
header->id = SVGA_3D_CMD_SURFACE_DMA;
header->size = sizeof(*body) + sizeof(*cb) + sizeof(*suffix);
body->guest.ptr = *ptr;
body->guest.ptr.offset += cur_offset->bo_offset;
body->guest.pitch = (cur_size->width * stride_bpp + 7) >> 3;
body->host.sid = srf->res.id;
body->host.face = cur_offset->face;
body->host.mipmap = cur_offset->mip;
body->transfer = ((to_surface) ? SVGA3D_WRITE_HOST_VRAM :
SVGA3D_READ_HOST_VRAM);
cb->x = 0;
cb->y = 0;
cb->z = 0;
cb->srcx = 0;
cb->srcy = 0;
cb->srcz = 0;
cb->w = cur_size->width;
cb->h = cur_size->height;
cb->d = cur_size->depth;
suffix->suffixSize = sizeof(*suffix);
suffix->maximumOffset = body->guest.pitch*cur_size->height*
cur_size->depth*bpp / stride_bpp;
suffix->flags.discard = 0;
suffix->flags.unsynchronized = 0;
suffix->flags.reserved = 0;
++cmd;
}
};
static void vmw_hw_surface_destroy(struct vmw_resource *res)
{
struct vmw_private *dev_priv = res->dev_priv;
struct vmw_surface *srf;
void *cmd;
if (res->id != -1) {
cmd = vmw_fifo_reserve(dev_priv, vmw_surface_destroy_size());
if (unlikely(cmd == NULL)) {
DRM_ERROR("Failed reserving FIFO space for surface "
"destruction.\n");
return;
}
vmw_surface_destroy_encode(res->id, cmd);
vmw_fifo_commit(dev_priv, vmw_surface_destroy_size());
/*
* used_memory_size_atomic, or separate lock
* to avoid taking dev_priv::cmdbuf_mutex in
* the destroy path.
*/
mutex_lock(&dev_priv->cmdbuf_mutex);
srf = container_of(res, struct vmw_surface, res);
dev_priv->used_memory_size -= srf->backup_size;
mutex_unlock(&dev_priv->cmdbuf_mutex);
}
vmw_3d_resource_dec(dev_priv, false);
}
void vmw_surface_res_free(struct vmw_resource *res)
{
struct vmw_surface *srf = container_of(res, struct vmw_surface, res);
if (srf->backup)
ttm_bo_unref(&srf->backup);
kfree(srf->offsets);
kfree(srf->sizes);
kfree(srf->snooper.image);
kfree(srf);
}
/**
* vmw_surface_do_validate - make a surface available to the device.
*
* @dev_priv: Pointer to a device private struct.
* @srf: Pointer to a struct vmw_surface.
*
* If the surface doesn't have a hw id, allocate one, and optionally
* DMA the backed up surface contents to the device.
*
* Returns -EBUSY if there wasn't sufficient device resources to
* complete the validation. Retry after freeing up resources.
*
* May return other errors if the kernel is out of guest resources.
*/
int vmw_surface_do_validate(struct vmw_private *dev_priv,
struct vmw_surface *srf)
{
struct vmw_resource *res = &srf->res;
struct list_head val_list;
struct ttm_validate_buffer val_buf;
uint32_t submit_size;
uint8_t *cmd;
int ret;
if (likely(res->id != -1))
return 0;
if (unlikely(dev_priv->used_memory_size + srf->backup_size >=
dev_priv->memory_size))
return -EBUSY;
/*
* Reserve- and validate the backup DMA bo.
*/
if (srf->backup) {
INIT_LIST_HEAD(&val_list);
val_buf.bo = ttm_bo_reference(srf->backup);
val_buf.new_sync_obj_arg = (void *)((unsigned long)
DRM_VMW_FENCE_FLAG_EXEC);
list_add_tail(&val_buf.head, &val_list);
ret = ttm_eu_reserve_buffers(&val_list);
if (unlikely(ret != 0))
goto out_no_reserve;
ret = ttm_bo_validate(srf->backup, &vmw_srf_placement,
true, false, false);
if (unlikely(ret != 0))
goto out_no_validate;
}
/*
* Alloc id for the resource.
*/
ret = vmw_resource_alloc_id(dev_priv, res);
if (unlikely(ret != 0)) {
DRM_ERROR("Failed to allocate a surface id.\n");
goto out_no_id;
}
if (unlikely(res->id >= SVGA3D_MAX_SURFACE_IDS)) {
ret = -EBUSY;
goto out_no_fifo;
}
/*
* Encode surface define- and dma commands.
*/
submit_size = vmw_surface_define_size(srf);
if (srf->backup)
submit_size += vmw_surface_dma_size(srf);
cmd = vmw_fifo_reserve(dev_priv, submit_size);
if (unlikely(cmd == NULL)) {
DRM_ERROR("Failed reserving FIFO space for surface "
"validation.\n");
ret = -ENOMEM;
goto out_no_fifo;
}
vmw_surface_define_encode(srf, cmd);
if (srf->backup) {
SVGAGuestPtr ptr;
cmd += vmw_surface_define_size(srf);
vmw_bo_get_guest_ptr(srf->backup, &ptr);
vmw_surface_dma_encode(srf, cmd, &ptr, true);
}
vmw_fifo_commit(dev_priv, submit_size);
/*
* Create a fence object and fence the backup buffer.
*/
if (srf->backup) {
struct vmw_fence_obj *fence;
(void) vmw_execbuf_fence_commands(NULL, dev_priv,
&fence, NULL);
ttm_eu_fence_buffer_objects(&val_list, fence);
if (likely(fence != NULL))
vmw_fence_obj_unreference(&fence);
ttm_bo_unref(&val_buf.bo);
ttm_bo_unref(&srf->backup);
}
/*
* Surface memory usage accounting.
*/
dev_priv->used_memory_size += srf->backup_size;
return 0;
out_no_fifo:
vmw_resource_release_id(res);
out_no_id:
out_no_validate:
if (srf->backup)
ttm_eu_backoff_reservation(&val_list);
out_no_reserve:
if (srf->backup)
ttm_bo_unref(&val_buf.bo);
return ret;
}
/**
* vmw_surface_evict - Evict a hw surface.
*
* @dev_priv: Pointer to a device private struct.
* @srf: Pointer to a struct vmw_surface
*
* DMA the contents of a hw surface to a backup guest buffer object,
* and destroy the hw surface, releasing its id.
*/
int vmw_surface_evict(struct vmw_private *dev_priv,
struct vmw_surface *srf)
{
struct vmw_resource *res = &srf->res;
struct list_head val_list;
struct ttm_validate_buffer val_buf;
uint32_t submit_size;
uint8_t *cmd;
int ret;
struct vmw_fence_obj *fence;
SVGAGuestPtr ptr;
BUG_ON(res->id == -1);
/*
* Create a surface backup buffer object.
*/
if (!srf->backup) {
ret = ttm_bo_create(&dev_priv->bdev, srf->backup_size,
ttm_bo_type_device,
&vmw_srf_placement, 0, 0, true,
NULL, &srf->backup);
if (unlikely(ret != 0))
return ret;
}
/*
* Reserve- and validate the backup DMA bo.
*/
INIT_LIST_HEAD(&val_list);
val_buf.bo = ttm_bo_reference(srf->backup);
val_buf.new_sync_obj_arg = (void *)(unsigned long)
DRM_VMW_FENCE_FLAG_EXEC;
list_add_tail(&val_buf.head, &val_list);
ret = ttm_eu_reserve_buffers(&val_list);
if (unlikely(ret != 0))
goto out_no_reserve;
ret = ttm_bo_validate(srf->backup, &vmw_srf_placement,
true, false, false);
if (unlikely(ret != 0))
goto out_no_validate;
/*
* Encode the dma- and surface destroy commands.
*/
submit_size = vmw_surface_dma_size(srf) + vmw_surface_destroy_size();
cmd = vmw_fifo_reserve(dev_priv, submit_size);
if (unlikely(cmd == NULL)) {
DRM_ERROR("Failed reserving FIFO space for surface "
"eviction.\n");
ret = -ENOMEM;
goto out_no_fifo;
}
vmw_bo_get_guest_ptr(srf->backup, &ptr);
vmw_surface_dma_encode(srf, cmd, &ptr, false);
cmd += vmw_surface_dma_size(srf);
vmw_surface_destroy_encode(res->id, cmd);
vmw_fifo_commit(dev_priv, submit_size);
/*
* Surface memory usage accounting.
*/
dev_priv->used_memory_size -= srf->backup_size;
/*
* Create a fence object and fence the DMA buffer.
*/
(void) vmw_execbuf_fence_commands(NULL, dev_priv,
&fence, NULL);
ttm_eu_fence_buffer_objects(&val_list, fence);
if (likely(fence != NULL))
vmw_fence_obj_unreference(&fence);
ttm_bo_unref(&val_buf.bo);
/*
* Release the surface ID.
*/
vmw_resource_release_id(res);
return 0;
out_no_fifo:
out_no_validate:
if (srf->backup)
ttm_eu_backoff_reservation(&val_list);
out_no_reserve:
ttm_bo_unref(&val_buf.bo);
ttm_bo_unref(&srf->backup);
return ret;
}
/**
* vmw_surface_validate - make a surface available to the device, evicting
* other surfaces if needed.
*
* @dev_priv: Pointer to a device private struct.
* @srf: Pointer to a struct vmw_surface.
*
* Try to validate a surface and if it fails due to limited device resources,
* repeatedly try to evict other surfaces until the request can be
* acommodated.
*
* May return errors if out of resources.
*/
int vmw_surface_validate(struct vmw_private *dev_priv,
struct vmw_surface *srf)
{
int ret;
struct vmw_surface *evict_srf;
do {
write_lock(&dev_priv->resource_lock);
list_del_init(&srf->lru_head);
write_unlock(&dev_priv->resource_lock);
ret = vmw_surface_do_validate(dev_priv, srf);
if (likely(ret != -EBUSY))
break;
write_lock(&dev_priv->resource_lock);
if (list_empty(&dev_priv->surface_lru)) {
DRM_ERROR("Out of device memory for surfaces.\n");
ret = -EBUSY;
write_unlock(&dev_priv->resource_lock);
break;
}
evict_srf = vmw_surface_reference
(list_first_entry(&dev_priv->surface_lru,
struct vmw_surface,
lru_head));
list_del_init(&evict_srf->lru_head);
write_unlock(&dev_priv->resource_lock);
(void) vmw_surface_evict(dev_priv, evict_srf);
vmw_surface_unreference(&evict_srf);
} while (1);
if (unlikely(ret != 0 && srf->res.id != -1)) {
write_lock(&dev_priv->resource_lock);
list_add_tail(&srf->lru_head, &dev_priv->surface_lru);
write_unlock(&dev_priv->resource_lock);
}
return ret;
}
/**
* vmw_surface_remove_from_lists - Remove surface resources from lookup lists
*
* @res: Pointer to a struct vmw_resource embedded in a struct vmw_surface
*
* As part of the resource destruction, remove the surface from any
* lookup lists.
*/
static void vmw_surface_remove_from_lists(struct vmw_resource *res)
{
struct vmw_surface *srf = container_of(res, struct vmw_surface, res);
list_del_init(&srf->lru_head);
}
int vmw_surface_init(struct vmw_private *dev_priv,
struct vmw_surface *srf,
void (*res_free) (struct vmw_resource *res))
{
int ret;
struct vmw_resource *res = &srf->res;
BUG_ON(res_free == NULL);
INIT_LIST_HEAD(&srf->lru_head);
ret = vmw_resource_init(dev_priv, res, &dev_priv->surface_idr,
VMW_RES_SURFACE, true, res_free,
vmw_surface_remove_from_lists);
if (unlikely(ret != 0))
res_free(res);
/*
* The surface won't be visible to hardware until a
* surface validate.
*/
(void) vmw_3d_resource_inc(dev_priv, false);
vmw_resource_activate(res, vmw_hw_surface_destroy);
return ret;
}
static void vmw_user_surface_free(struct vmw_resource *res)
{
struct vmw_surface *srf = container_of(res, struct vmw_surface, res);
struct vmw_user_surface *user_srf =
container_of(srf, struct vmw_user_surface, srf);
struct vmw_private *dev_priv = srf->res.dev_priv;
uint32_t size = user_srf->size;
if (srf->backup)
ttm_bo_unref(&srf->backup);
kfree(srf->offsets);
kfree(srf->sizes);
kfree(srf->snooper.image);
kfree(user_srf);
ttm_mem_global_free(vmw_mem_glob(dev_priv), size);
}
/**
* vmw_resource_unreserve - unreserve resources previously reserved for
* command submission.
*
* @list_head: list of resources to unreserve.
*
* Currently only surfaces are considered, and unreserving a surface
* means putting it back on the device's surface lru list,
* so that it can be evicted if necessary.
* This function traverses the resource list and
* checks whether resources are surfaces, and in that case puts them back
* on the device's surface LRU list.
*/
void vmw_resource_unreserve(struct list_head *list)
{
struct vmw_resource *res;
struct vmw_surface *srf;
rwlock_t *lock = NULL;
list_for_each_entry(res, list, validate_head) {
if (res->res_free != &vmw_surface_res_free &&
res->res_free != &vmw_user_surface_free)
continue;
if (unlikely(lock == NULL)) {
lock = &res->dev_priv->resource_lock;
write_lock(lock);
}
srf = container_of(res, struct vmw_surface, res);
list_del_init(&srf->lru_head);
list_add_tail(&srf->lru_head, &res->dev_priv->surface_lru);
}
if (lock != NULL)
write_unlock(lock);
}
/**
* Helper function that looks either a surface or dmabuf.
*
* The pointer this pointed at by out_surf and out_buf needs to be null.
*/
int vmw_user_lookup_handle(struct vmw_private *dev_priv,
struct ttm_object_file *tfile,
uint32_t handle,
struct vmw_surface **out_surf,
struct vmw_dma_buffer **out_buf)
{
int ret;
BUG_ON(*out_surf || *out_buf);
ret = vmw_user_surface_lookup_handle(dev_priv, tfile, handle, out_surf);
if (!ret)
return 0;
ret = vmw_user_dmabuf_lookup(tfile, handle, out_buf);
return ret;
}
int vmw_user_surface_lookup_handle(struct vmw_private *dev_priv,
struct ttm_object_file *tfile,
uint32_t handle, struct vmw_surface **out)
{
struct vmw_resource *res;
struct vmw_surface *srf;
struct vmw_user_surface *user_srf;
struct ttm_base_object *base;
int ret = -EINVAL;
base = ttm_base_object_lookup(tfile, handle);
if (unlikely(base == NULL))
return -EINVAL;
if (unlikely(base->object_type != VMW_RES_SURFACE))
goto out_bad_resource;
user_srf = container_of(base, struct vmw_user_surface, base);
srf = &user_srf->srf;
res = &srf->res;
read_lock(&dev_priv->resource_lock);
if (!res->avail || res->res_free != &vmw_user_surface_free) {
read_unlock(&dev_priv->resource_lock);
goto out_bad_resource;
}
kref_get(&res->kref);
read_unlock(&dev_priv->resource_lock);
*out = srf;
ret = 0;
out_bad_resource:
ttm_base_object_unref(&base);
return ret;
}
static void vmw_user_surface_base_release(struct ttm_base_object **p_base)
{
struct ttm_base_object *base = *p_base;
struct vmw_user_surface *user_srf =
container_of(base, struct vmw_user_surface, base);
struct vmw_resource *res = &user_srf->srf.res;
*p_base = NULL;
vmw_resource_unreference(&res);
}
int vmw_surface_destroy_ioctl(struct drm_device *dev, void *data,
struct drm_file *file_priv)
{
struct drm_vmw_surface_arg *arg = (struct drm_vmw_surface_arg *)data;
struct ttm_object_file *tfile = vmw_fpriv(file_priv)->tfile;
return ttm_ref_object_base_unref(tfile, arg->sid, TTM_REF_USAGE);
}
int vmw_surface_define_ioctl(struct drm_device *dev, void *data,
struct drm_file *file_priv)
{
struct vmw_private *dev_priv = vmw_priv(dev);
struct vmw_user_surface *user_srf;
struct vmw_surface *srf;
struct vmw_resource *res;
struct vmw_resource *tmp;
union drm_vmw_surface_create_arg *arg =
(union drm_vmw_surface_create_arg *)data;
struct drm_vmw_surface_create_req *req = &arg->req;
struct drm_vmw_surface_arg *rep = &arg->rep;
struct ttm_object_file *tfile = vmw_fpriv(file_priv)->tfile;
struct drm_vmw_size __user *user_sizes;
int ret;
int i, j;
uint32_t cur_bo_offset;
struct drm_vmw_size *cur_size;
struct vmw_surface_offset *cur_offset;
uint32_t stride_bpp;
uint32_t bpp;
uint32_t num_sizes;
uint32_t size;
struct vmw_master *vmaster = vmw_master(file_priv->master);
if (unlikely(vmw_user_surface_size == 0))
vmw_user_surface_size = ttm_round_pot(sizeof(*user_srf)) +
128;
num_sizes = 0;
for (i = 0; i < DRM_VMW_MAX_SURFACE_FACES; ++i)
num_sizes += req->mip_levels[i];
if (num_sizes > DRM_VMW_MAX_SURFACE_FACES *
DRM_VMW_MAX_MIP_LEVELS)
return -EINVAL;
size = vmw_user_surface_size + 128 +
ttm_round_pot(num_sizes * sizeof(struct drm_vmw_size)) +
ttm_round_pot(num_sizes * sizeof(struct vmw_surface_offset));
ret = ttm_read_lock(&vmaster->lock, true);
if (unlikely(ret != 0))
return ret;
ret = ttm_mem_global_alloc(vmw_mem_glob(dev_priv),
size, false, true);
if (unlikely(ret != 0)) {
if (ret != -ERESTARTSYS)
DRM_ERROR("Out of graphics memory for surface"
" creation.\n");
goto out_unlock;
}
user_srf = kmalloc(sizeof(*user_srf), GFP_KERNEL);
if (unlikely(user_srf == NULL)) {
ret = -ENOMEM;
goto out_no_user_srf;
}
srf = &user_srf->srf;
res = &srf->res;
srf->flags = req->flags;
srf->format = req->format;
srf->scanout = req->scanout;
srf->backup = NULL;
memcpy(srf->mip_levels, req->mip_levels, sizeof(srf->mip_levels));
srf->num_sizes = num_sizes;
user_srf->size = size;
srf->sizes = kmalloc(srf->num_sizes * sizeof(*srf->sizes), GFP_KERNEL);
if (unlikely(srf->sizes == NULL)) {
ret = -ENOMEM;
goto out_no_sizes;
}
srf->offsets = kmalloc(srf->num_sizes * sizeof(*srf->offsets),
GFP_KERNEL);
if (unlikely(srf->sizes == NULL)) {
ret = -ENOMEM;
goto out_no_offsets;
}
user_sizes = (struct drm_vmw_size __user *)(unsigned long)
req->size_addr;
ret = copy_from_user(srf->sizes, user_sizes,
srf->num_sizes * sizeof(*srf->sizes));
if (unlikely(ret != 0)) {
ret = -EFAULT;
goto out_no_copy;
}
cur_bo_offset = 0;
cur_offset = srf->offsets;
cur_size = srf->sizes;
bpp = vmw_sf_bpp[srf->format].bpp;
stride_bpp = vmw_sf_bpp[srf->format].s_bpp;
for (i = 0; i < DRM_VMW_MAX_SURFACE_FACES; ++i) {
for (j = 0; j < srf->mip_levels[i]; ++j) {
uint32_t stride =
(cur_size->width * stride_bpp + 7) >> 3;
cur_offset->face = i;
cur_offset->mip = j;
cur_offset->bo_offset = cur_bo_offset;
cur_bo_offset += stride * cur_size->height *
cur_size->depth * bpp / stride_bpp;
++cur_offset;
++cur_size;
}
}
srf->backup_size = cur_bo_offset;
if (srf->scanout &&
srf->num_sizes == 1 &&
srf->sizes[0].width == 64 &&
srf->sizes[0].height == 64 &&
srf->format == SVGA3D_A8R8G8B8) {
/* allocate image area and clear it */
srf->snooper.image = kzalloc(64 * 64 * 4, GFP_KERNEL);
if (!srf->snooper.image) {
DRM_ERROR("Failed to allocate cursor_image\n");
ret = -ENOMEM;
goto out_no_copy;
}
} else {
srf->snooper.image = NULL;
}
srf->snooper.crtc = NULL;
user_srf->base.shareable = false;
user_srf->base.tfile = NULL;
/**
* From this point, the generic resource management functions
* destroy the object on failure.
*/
ret = vmw_surface_init(dev_priv, srf, vmw_user_surface_free);
if (unlikely(ret != 0))
goto out_unlock;
tmp = vmw_resource_reference(&srf->res);
ret = ttm_base_object_init(tfile, &user_srf->base,
req->shareable, VMW_RES_SURFACE,
&vmw_user_surface_base_release, NULL);
if (unlikely(ret != 0)) {
vmw_resource_unreference(&tmp);
vmw_resource_unreference(&res);
goto out_unlock;
}
rep->sid = user_srf->base.hash.key;
if (rep->sid == SVGA3D_INVALID_ID)
DRM_ERROR("Created bad Surface ID.\n");
vmw_resource_unreference(&res);
ttm_read_unlock(&vmaster->lock);
return 0;
out_no_copy:
kfree(srf->offsets);
out_no_offsets:
kfree(srf->sizes);
out_no_sizes:
kfree(user_srf);
out_no_user_srf:
ttm_mem_global_free(vmw_mem_glob(dev_priv), size);
out_unlock:
ttm_read_unlock(&vmaster->lock);
return ret;
}
int vmw_surface_reference_ioctl(struct drm_device *dev, void *data,
struct drm_file *file_priv)
{
union drm_vmw_surface_reference_arg *arg =
(union drm_vmw_surface_reference_arg *)data;
struct drm_vmw_surface_arg *req = &arg->req;
struct drm_vmw_surface_create_req *rep = &arg->rep;
struct ttm_object_file *tfile = vmw_fpriv(file_priv)->tfile;
struct vmw_surface *srf;
struct vmw_user_surface *user_srf;
struct drm_vmw_size __user *user_sizes;
struct ttm_base_object *base;
int ret = -EINVAL;
base = ttm_base_object_lookup(tfile, req->sid);
if (unlikely(base == NULL)) {
DRM_ERROR("Could not find surface to reference.\n");
return -EINVAL;
}
if (unlikely(base->object_type != VMW_RES_SURFACE))
goto out_bad_resource;
user_srf = container_of(base, struct vmw_user_surface, base);
srf = &user_srf->srf;
ret = ttm_ref_object_add(tfile, &user_srf->base, TTM_REF_USAGE, NULL);
if (unlikely(ret != 0)) {
DRM_ERROR("Could not add a reference to a surface.\n");
goto out_no_reference;
}
rep->flags = srf->flags;
rep->format = srf->format;
memcpy(rep->mip_levels, srf->mip_levels, sizeof(srf->mip_levels));
user_sizes = (struct drm_vmw_size __user *)(unsigned long)
rep->size_addr;
if (user_sizes)
ret = copy_to_user(user_sizes, srf->sizes,
srf->num_sizes * sizeof(*srf->sizes));
if (unlikely(ret != 0)) {
DRM_ERROR("copy_to_user failed %p %u\n",
user_sizes, srf->num_sizes);
ret = -EFAULT;
}
out_bad_resource:
out_no_reference:
ttm_base_object_unref(&base);
return ret;
}
int vmw_surface_check(struct vmw_private *dev_priv,
struct ttm_object_file *tfile,
uint32_t handle, int *id)
{
struct ttm_base_object *base;
struct vmw_user_surface *user_srf;
int ret = -EPERM;
base = ttm_base_object_lookup(tfile, handle);
if (unlikely(base == NULL))
return -EINVAL;
if (unlikely(base->object_type != VMW_RES_SURFACE))
goto out_bad_surface;
user_srf = container_of(base, struct vmw_user_surface, base);
*id = user_srf->srf.res.id;
ret = 0;
out_bad_surface:
/**
* FIXME: May deadlock here when called from the
* command parsing code.
*/
ttm_base_object_unref(&base);
return ret;
}
/**
* Buffer management.
*/
void vmw_dmabuf_bo_free(struct ttm_buffer_object *bo)
{
struct vmw_dma_buffer *vmw_bo = vmw_dma_buffer(bo);
kfree(vmw_bo);
}
int vmw_dmabuf_init(struct vmw_private *dev_priv,
struct vmw_dma_buffer *vmw_bo,
size_t size, struct ttm_placement *placement,
bool interruptible,
void (*bo_free) (struct ttm_buffer_object *bo))
{
struct ttm_bo_device *bdev = &dev_priv->bdev;
size_t acc_size;
int ret;
BUG_ON(!bo_free);
acc_size = ttm_bo_acc_size(bdev, size, sizeof(struct vmw_dma_buffer));
memset(vmw_bo, 0, sizeof(*vmw_bo));
INIT_LIST_HEAD(&vmw_bo->validate_list);
ret = ttm_bo_init(bdev, &vmw_bo->base, size,
ttm_bo_type_device, placement,
0, 0, interruptible,
NULL, acc_size, NULL, bo_free);
return ret;
}
static void vmw_user_dmabuf_destroy(struct ttm_buffer_object *bo)
{
struct vmw_user_dma_buffer *vmw_user_bo = vmw_user_dma_buffer(bo);
kfree(vmw_user_bo);
}
static void vmw_user_dmabuf_release(struct ttm_base_object **p_base)
{
struct vmw_user_dma_buffer *vmw_user_bo;
struct ttm_base_object *base = *p_base;
struct ttm_buffer_object *bo;
*p_base = NULL;
if (unlikely(base == NULL))
return;
vmw_user_bo = container_of(base, struct vmw_user_dma_buffer, base);
bo = &vmw_user_bo->dma.base;
ttm_bo_unref(&bo);
}
int vmw_dmabuf_alloc_ioctl(struct drm_device *dev, void *data,
struct drm_file *file_priv)
{
struct vmw_private *dev_priv = vmw_priv(dev);
union drm_vmw_alloc_dmabuf_arg *arg =
(union drm_vmw_alloc_dmabuf_arg *)data;
struct drm_vmw_alloc_dmabuf_req *req = &arg->req;
struct drm_vmw_dmabuf_rep *rep = &arg->rep;
struct vmw_user_dma_buffer *vmw_user_bo;
struct ttm_buffer_object *tmp;
struct vmw_master *vmaster = vmw_master(file_priv->master);
int ret;
vmw_user_bo = kzalloc(sizeof(*vmw_user_bo), GFP_KERNEL);
if (unlikely(vmw_user_bo == NULL))
return -ENOMEM;
ret = ttm_read_lock(&vmaster->lock, true);
if (unlikely(ret != 0)) {
kfree(vmw_user_bo);
return ret;
}
ret = vmw_dmabuf_init(dev_priv, &vmw_user_bo->dma, req->size,
&vmw_vram_sys_placement, true,
&vmw_user_dmabuf_destroy);
if (unlikely(ret != 0))
goto out_no_dmabuf;
tmp = ttm_bo_reference(&vmw_user_bo->dma.base);
ret = ttm_base_object_init(vmw_fpriv(file_priv)->tfile,
&vmw_user_bo->base,
false,
ttm_buffer_type,
&vmw_user_dmabuf_release, NULL);
if (unlikely(ret != 0))
goto out_no_base_object;
else {
rep->handle = vmw_user_bo->base.hash.key;
rep->map_handle = vmw_user_bo->dma.base.addr_space_offset;
rep->cur_gmr_id = vmw_user_bo->base.hash.key;
rep->cur_gmr_offset = 0;
}
out_no_base_object:
ttm_bo_unref(&tmp);
out_no_dmabuf:
ttm_read_unlock(&vmaster->lock);
return ret;
}
int vmw_dmabuf_unref_ioctl(struct drm_device *dev, void *data,
struct drm_file *file_priv)
{
struct drm_vmw_unref_dmabuf_arg *arg =
(struct drm_vmw_unref_dmabuf_arg *)data;
return ttm_ref_object_base_unref(vmw_fpriv(file_priv)->tfile,
arg->handle,
TTM_REF_USAGE);
}
uint32_t vmw_dmabuf_validate_node(struct ttm_buffer_object *bo,
uint32_t cur_validate_node)
{
struct vmw_dma_buffer *vmw_bo = vmw_dma_buffer(bo);
if (likely(vmw_bo->on_validate_list))
return vmw_bo->cur_validate_node;
vmw_bo->cur_validate_node = cur_validate_node;
vmw_bo->on_validate_list = true;
return cur_validate_node;
}
void vmw_dmabuf_validate_clear(struct ttm_buffer_object *bo)
{
struct vmw_dma_buffer *vmw_bo = vmw_dma_buffer(bo);
vmw_bo->on_validate_list = false;
}
int vmw_user_dmabuf_lookup(struct ttm_object_file *tfile,
uint32_t handle, struct vmw_dma_buffer **out)
{
struct vmw_user_dma_buffer *vmw_user_bo;
struct ttm_base_object *base;
base = ttm_base_object_lookup(tfile, handle);
if (unlikely(base == NULL)) {
printk(KERN_ERR "Invalid buffer object handle 0x%08lx.\n",
(unsigned long)handle);
return -ESRCH;
}
if (unlikely(base->object_type != ttm_buffer_type)) {
ttm_base_object_unref(&base);
printk(KERN_ERR "Invalid buffer object handle 0x%08lx.\n",
(unsigned long)handle);
return -EINVAL;
}
vmw_user_bo = container_of(base, struct vmw_user_dma_buffer, base);
(void)ttm_bo_reference(&vmw_user_bo->dma.base);
ttm_base_object_unref(&base);
*out = &vmw_user_bo->dma;
return 0;
}
/*
* Stream management
*/
static void vmw_stream_destroy(struct vmw_resource *res)
{
struct vmw_private *dev_priv = res->dev_priv;
struct vmw_stream *stream;
int ret;
DRM_INFO("%s: unref\n", __func__);
stream = container_of(res, struct vmw_stream, res);
ret = vmw_overlay_unref(dev_priv, stream->stream_id);
WARN_ON(ret != 0);
}
static int vmw_stream_init(struct vmw_private *dev_priv,
struct vmw_stream *stream,
void (*res_free) (struct vmw_resource *res))
{
struct vmw_resource *res = &stream->res;
int ret;
ret = vmw_resource_init(dev_priv, res, &dev_priv->stream_idr,
VMW_RES_STREAM, false, res_free, NULL);
if (unlikely(ret != 0)) {
if (res_free == NULL)
kfree(stream);
else
res_free(&stream->res);
return ret;
}
ret = vmw_overlay_claim(dev_priv, &stream->stream_id);
if (ret) {
vmw_resource_unreference(&res);
return ret;
}
DRM_INFO("%s: claimed\n", __func__);
vmw_resource_activate(&stream->res, vmw_stream_destroy);
return 0;
}
/**
* User-space context management:
*/
static void vmw_user_stream_free(struct vmw_resource *res)
{
struct vmw_user_stream *stream =
container_of(res, struct vmw_user_stream, stream.res);
struct vmw_private *dev_priv = res->dev_priv;
kfree(stream);
ttm_mem_global_free(vmw_mem_glob(dev_priv),
vmw_user_stream_size);
}
/**
* This function is called when user space has no more references on the
* base object. It releases the base-object's reference on the resource object.
*/
static void vmw_user_stream_base_release(struct ttm_base_object **p_base)
{
struct ttm_base_object *base = *p_base;
struct vmw_user_stream *stream =
container_of(base, struct vmw_user_stream, base);
struct vmw_resource *res = &stream->stream.res;
*p_base = NULL;
vmw_resource_unreference(&res);
}
int vmw_stream_unref_ioctl(struct drm_device *dev, void *data,
struct drm_file *file_priv)
{
struct vmw_private *dev_priv = vmw_priv(dev);
struct vmw_resource *res;
struct vmw_user_stream *stream;
struct drm_vmw_stream_arg *arg = (struct drm_vmw_stream_arg *)data;
struct ttm_object_file *tfile = vmw_fpriv(file_priv)->tfile;
int ret = 0;
res = vmw_resource_lookup(dev_priv, &dev_priv->stream_idr, arg->stream_id);
if (unlikely(res == NULL))
return -EINVAL;
if (res->res_free != &vmw_user_stream_free) {
ret = -EINVAL;
goto out;
}
stream = container_of(res, struct vmw_user_stream, stream.res);
if (stream->base.tfile != tfile) {
ret = -EINVAL;
goto out;
}
ttm_ref_object_base_unref(tfile, stream->base.hash.key, TTM_REF_USAGE);
out:
vmw_resource_unreference(&res);
return ret;
}
int vmw_stream_claim_ioctl(struct drm_device *dev, void *data,
struct drm_file *file_priv)
{
struct vmw_private *dev_priv = vmw_priv(dev);
struct vmw_user_stream *stream;
struct vmw_resource *res;
struct vmw_resource *tmp;
struct drm_vmw_stream_arg *arg = (struct drm_vmw_stream_arg *)data;
struct ttm_object_file *tfile = vmw_fpriv(file_priv)->tfile;
struct vmw_master *vmaster = vmw_master(file_priv->master);
int ret;
/*
* Approximate idr memory usage with 128 bytes. It will be limited
* by maximum number_of streams anyway?
*/
if (unlikely(vmw_user_stream_size == 0))
vmw_user_stream_size = ttm_round_pot(sizeof(*stream)) + 128;
ret = ttm_read_lock(&vmaster->lock, true);
if (unlikely(ret != 0))
return ret;
ret = ttm_mem_global_alloc(vmw_mem_glob(dev_priv),
vmw_user_stream_size,
false, true);
if (unlikely(ret != 0)) {
if (ret != -ERESTARTSYS)
DRM_ERROR("Out of graphics memory for stream"
" creation.\n");
goto out_unlock;
}
stream = kmalloc(sizeof(*stream), GFP_KERNEL);
if (unlikely(stream == NULL)) {
ttm_mem_global_free(vmw_mem_glob(dev_priv),
vmw_user_stream_size);
ret = -ENOMEM;
goto out_unlock;
}
res = &stream->stream.res;
stream->base.shareable = false;
stream->base.tfile = NULL;
/*
* From here on, the destructor takes over resource freeing.
*/
ret = vmw_stream_init(dev_priv, &stream->stream, vmw_user_stream_free);
if (unlikely(ret != 0))
goto out_unlock;
tmp = vmw_resource_reference(res);
ret = ttm_base_object_init(tfile, &stream->base, false, VMW_RES_STREAM,
&vmw_user_stream_base_release, NULL);
if (unlikely(ret != 0)) {
vmw_resource_unreference(&tmp);
goto out_err;
}
arg->stream_id = res->id;
out_err:
vmw_resource_unreference(&res);
out_unlock:
ttm_read_unlock(&vmaster->lock);
return ret;
}
int vmw_user_stream_lookup(struct vmw_private *dev_priv,
struct ttm_object_file *tfile,
uint32_t *inout_id, struct vmw_resource **out)
{
struct vmw_user_stream *stream;
struct vmw_resource *res;
int ret;
res = vmw_resource_lookup(dev_priv, &dev_priv->stream_idr, *inout_id);
if (unlikely(res == NULL))
return -EINVAL;
if (res->res_free != &vmw_user_stream_free) {
ret = -EINVAL;
goto err_ref;
}
stream = container_of(res, struct vmw_user_stream, stream.res);
if (stream->base.tfile != tfile) {
ret = -EPERM;
goto err_ref;
}
*inout_id = stream->stream.stream_id;
*out = res;
return 0;
err_ref:
vmw_resource_unreference(&res);
return ret;
}
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