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ebc9ac7c3d
Historically our device headers have been forked versions of the internal device headers, this has made maintaining them a bit of a burden. To fix the situation, going forward, the device headers will be verbatim copies of the internal headers. To do that the driver code has to be adapted to use pristine device headers. This will make future update to the device headers trivial and automatic. Signed-off-by: Zack Rusin <zackr@vmware.com> Reviewed-by: Martin Krastev <krastevm@vmware.com> Link: https://patchwork.freedesktop.org/patch/msgid/20210615182336.995192-2-zackr@vmware.com
143 lines
4.2 KiB
C
143 lines
4.2 KiB
C
/* SPDX-License-Identifier: GPL-2.0 OR MIT */
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/**************************************************************************
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*
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* Copyright 2021 VMware, Inc., Palo Alto, CA., USA
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the
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* "Software"), to deal in the Software without restriction, including
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* without limitation the rights to use, copy, modify, merge, publish,
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* distribute, sub license, and/or sell copies of the Software, and to
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* permit persons to whom the Software is furnished to do so, subject to
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* the following conditions:
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*
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* The above copyright notice and this permission notice (including the
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* next paragraph) shall be included in all copies or substantial portions
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* of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
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* THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM,
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* DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
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* OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
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* USE OR OTHER DEALINGS IN THE SOFTWARE.
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*
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**************************************************************************/
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#include "vmwgfx_devcaps.h"
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#include "vmwgfx_drv.h"
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struct svga_3d_compat_cap {
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SVGA3dFifoCapsRecordHeader header;
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SVGA3dFifoCapPair pairs[SVGA3D_DEVCAP_MAX];
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};
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static u32 vmw_mask_legacy_multisample(unsigned int cap, u32 fmt_value)
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{
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/*
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* A version of user-space exists which use MULTISAMPLE_MASKABLESAMPLES
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* to check the sample count supported by virtual device. Since there
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* never was support for multisample count for backing MOB return 0.
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*
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* MULTISAMPLE_MASKABLESAMPLES devcap is marked as deprecated by virtual
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* device.
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*/
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if (cap == SVGA3D_DEVCAP_DEAD5)
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return 0;
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return fmt_value;
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}
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static int vmw_fill_compat_cap(struct vmw_private *dev_priv, void *bounce,
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size_t size)
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{
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struct svga_3d_compat_cap *compat_cap =
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(struct svga_3d_compat_cap *) bounce;
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unsigned int i;
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size_t pair_offset = offsetof(struct svga_3d_compat_cap, pairs);
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unsigned int max_size;
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if (size < pair_offset)
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return -EINVAL;
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max_size = (size - pair_offset) / sizeof(SVGA3dFifoCapPair);
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if (max_size > SVGA3D_DEVCAP_MAX)
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max_size = SVGA3D_DEVCAP_MAX;
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compat_cap->header.length =
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(pair_offset + max_size * sizeof(SVGA3dFifoCapPair)) / sizeof(u32);
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compat_cap->header.type = SVGA3D_FIFO_CAPS_RECORD_DEVCAPS;
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for (i = 0; i < max_size; ++i) {
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compat_cap->pairs[i][0] = i;
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compat_cap->pairs[i][1] = vmw_mask_legacy_multisample
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(i, dev_priv->devcaps[i]);
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}
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return 0;
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}
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int vmw_devcaps_create(struct vmw_private *vmw)
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{
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bool gb_objects = !!(vmw->capabilities & SVGA_CAP_GBOBJECTS);
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uint32_t i;
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if (gb_objects) {
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vmw->devcaps = vzalloc(sizeof(uint32_t) * SVGA3D_DEVCAP_MAX);
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if (!vmw->devcaps)
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return -ENOMEM;
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for (i = 0; i < SVGA3D_DEVCAP_MAX; ++i) {
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vmw_write(vmw, SVGA_REG_DEV_CAP, i);
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vmw->devcaps[i] = vmw_read(vmw, SVGA_REG_DEV_CAP);
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}
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}
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return 0;
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}
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void vmw_devcaps_destroy(struct vmw_private *vmw)
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{
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vfree(vmw->devcaps);
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vmw->devcaps = NULL;
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}
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uint32 vmw_devcaps_size(const struct vmw_private *vmw,
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bool gb_aware)
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{
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bool gb_objects = !!(vmw->capabilities & SVGA_CAP_GBOBJECTS);
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if (gb_objects && gb_aware)
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return SVGA3D_DEVCAP_MAX * sizeof(uint32_t);
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else if (gb_objects)
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return sizeof(struct svga_3d_compat_cap) +
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sizeof(uint32_t);
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else if (vmw->fifo_mem != NULL)
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return (SVGA_FIFO_3D_CAPS_LAST - SVGA_FIFO_3D_CAPS + 1) *
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sizeof(uint32_t);
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else
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return 0;
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}
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int vmw_devcaps_copy(struct vmw_private *vmw, bool gb_aware,
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void *dst, uint32_t dst_size)
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{
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int ret;
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bool gb_objects = !!(vmw->capabilities & SVGA_CAP_GBOBJECTS);
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if (gb_objects && gb_aware) {
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memcpy(dst, vmw->devcaps, dst_size);
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} else if (gb_objects) {
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ret = vmw_fill_compat_cap(vmw, dst, dst_size);
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if (unlikely(ret != 0))
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return ret;
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} else if (vmw->fifo_mem) {
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u32 *fifo_mem = vmw->fifo_mem;
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memcpy(dst, &fifo_mem[SVGA_FIFO_3D_CAPS], dst_size);
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} else
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return -EINVAL;
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return 0;
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}
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