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virtio-gpu: Refactor virtio_gpu_create_mapping_iov 

Instead of passing the attach_backing object to extract nr_entries
and offset, explicitly pass these as arguments to this function.
This will be helpful when adding create_blob API.

Cc: Gerd Hoffmann <kraxel@redhat.com>
Signed-off-by: Vivek Kasireddy <vivek.kasireddy@intel.com>
Message-Id: <20210526231429.1045476-8-vivek.kasireddy@intel.com>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
This commit is contained in:
Vivek Kasireddy 2021-05-26 16:14:22 -07:00 committed by Gerd Hoffmann
parent e64d4b6a9b
commit 70d3766231
3 changed files with 12 additions and 12 deletions
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3
hw/display/virtio-gpu-virgl.c
View File

@ -289,7 +289,8 @@ static void virgl_resource_attach_backing(VirtIOGPU *g,
VIRTIO_GPU_FILL_CMD(att_rb);
trace_virtio_gpu_cmd_res_back_attach(att_rb.resource_id);
ret = virtio_gpu_create_mapping_iov(g, &att_rb, cmd, NULL, &res_iovs, &res_niov);
ret = virtio_gpu_create_mapping_iov(g, att_rb.nr_entries, sizeof(att_rb),
cmd, NULL, &res_iovs, &res_niov);
if (ret != 0) {
cmd->error = VIRTIO_GPU_RESP_ERR_UNSPEC;
return;

19
hw/display/virtio-gpu.c
View File

@ -615,7 +615,7 @@ static void virtio_gpu_set_scanout(VirtIOGPU *g,
}
int virtio_gpu_create_mapping_iov(VirtIOGPU *g,
struct virtio_gpu_resource_attach_backing *ab,
uint32_t nr_entries, uint32_t offset,
struct virtio_gpu_ctrl_command *cmd,
uint64_t **addr, struct iovec **iov,
uint32_t *niov)
@ -624,17 +624,17 @@ int virtio_gpu_create_mapping_iov(VirtIOGPU *g,
size_t esize, s;
int e, v;
if (ab->nr_entries > 16384) {
if (nr_entries > 16384) {
qemu_log_mask(LOG_GUEST_ERROR,
"%s: nr_entries is too big (%d > 16384)\n",
__func__, ab->nr_entries);
__func__, nr_entries);
return -1;
}
esize = sizeof(*ents) * ab->nr_entries;
esize = sizeof(*ents) * nr_entries;
ents = g_malloc(esize);
s = iov_to_buf(cmd->elem.out_sg, cmd->elem.out_num,
sizeof(*ab), ents, esize);
offset, ents, esize);
if (s != esize) {
qemu_log_mask(LOG_GUEST_ERROR,
"%s: command data size incorrect %zu vs %zu\n",
@ -647,7 +647,7 @@ int virtio_gpu_create_mapping_iov(VirtIOGPU *g,
if (addr) {
*addr = NULL;
}
for (e = 0, v = 0; e < ab->nr_entries; e++) {
for (e = 0, v = 0; e < nr_entries; e++) {
uint64_t a = le64_to_cpu(ents[e].addr);
uint32_t l = le32_to_cpu(ents[e].length);
hwaddr len;
@ -659,8 +659,7 @@ int virtio_gpu_create_mapping_iov(VirtIOGPU *g,
a, &len, DMA_DIRECTION_TO_DEVICE);
if (!map) {
qemu_log_mask(LOG_GUEST_ERROR, "%s: failed to map MMIO memory for"
" resource %d element %d\n",
__func__, ab->resource_id, e);
" element %d\n", __func__, e);
virtio_gpu_cleanup_mapping_iov(g, *iov, v);
g_free(ents);
*iov = NULL;
@ -743,8 +742,8 @@ virtio_gpu_resource_attach_backing(VirtIOGPU *g,
return;
}
ret = virtio_gpu_create_mapping_iov(g, &ab, cmd, &res->addrs,
&res->iov, &res->iov_cnt);
ret = virtio_gpu_create_mapping_iov(g, ab.nr_entries, sizeof(ab), cmd,
&res->addrs, &res->iov, &res->iov_cnt);
if (ret != 0) {
cmd->error = VIRTIO_GPU_RESP_ERR_UNSPEC;
return;

2
include/hw/virtio/virtio-gpu.h
View File

@ -238,7 +238,7 @@ void virtio_gpu_get_display_info(VirtIOGPU *g,
void virtio_gpu_get_edid(VirtIOGPU *g,
struct virtio_gpu_ctrl_command *cmd);
int virtio_gpu_create_mapping_iov(VirtIOGPU *g,
struct virtio_gpu_resource_attach_backing *ab,
uint32_t nr_entries, uint32_t offset,
struct virtio_gpu_ctrl_command *cmd,
uint64_t **addr, struct iovec **iov,
uint32_t *niov);