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/*
* Copyright (C) 2019 Collabora, Ltd.
*
* 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 (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 NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS 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:
* Alyssa Rosenzweig <alyssa.rosenzweig@collabora.com>
*/
#include <xf86drm.h>
#include "util/u_math.h"
#include "util/macros.h"
#include "util/hash_table.h"
#include "util/u_thread.h"
#include "drm-uapi/panfrost_drm.h"
#include "pan_encoder.h"
#include "pan_device.h"
#include "panfrost-quirks.h"
#include "pan_bo.h"
/* Abstraction over the raw drm_panfrost_get_param ioctl for fetching
* information about devices */
static __u64
panfrost_query_raw(
int fd,
enum drm_panfrost_param param,
bool required,
unsigned default_value)
{
struct drm_panfrost_get_param get_param = {0,};
ASSERTED int ret;
get_param.param = param;
ret = drmIoctl(fd, DRM_IOCTL_PANFROST_GET_PARAM, &get_param);
if (ret) {
assert(!required);
return default_value;
}
return get_param.value;
}
unsigned
panfrost_query_gpu_version(int fd)
{
return panfrost_query_raw(fd, DRM_PANFROST_PARAM_GPU_PROD_ID, true, 0);
}
unsigned
panfrost_query_core_count(int fd)
{
/* On older kernels, worst-case to 16 cores */
unsigned mask = panfrost_query_raw(fd,
DRM_PANFROST_PARAM_SHADER_PRESENT, false, 0xffff);
return util_bitcount(mask);
}
unsigned
panfrost_query_thread_tls_alloc(int fd)
{
/* On older kernels, we worst-case to 256 threads, the architectural
* maximum for Midgard. On my current kernel/hardware, I'm seeing this
* readback as 0, so we'll worst-case there too */
unsigned tls = panfrost_query_raw(fd,
DRM_PANFROST_PARAM_THREAD_TLS_ALLOC, false, 256);
if (tls)
return tls;
else
return 256;
}
/* Given a GPU ID like 0x860, return a prettified model name */
const char *
panfrost_model_name(unsigned gpu_id)
{
switch (gpu_id) {
case 0x600: return "Mali T600 (Panfrost)";
case 0x620: return "Mali T620 (Panfrost)";
case 0x720: return "Mali T720 (Panfrost)";
case 0x820: return "Mali T820 (Panfrost)";
case 0x830: return "Mali T830 (Panfrost)";
case 0x750: return "Mali T760 (Panfrost)";
case 0x860: return "Mali T860 (Panfrost)";
case 0x880: return "Mali T880 (Panfrost)";
case 0x7093: return "Mali G31 (Panfrost)";
case 0x7212: return "Mali G52 (Panfrost)";
default:
unreachable("Invalid GPU ID");
}
}
static uint32_t
panfrost_active_bos_hash(const void *key)
{
const struct panfrost_bo *bo = key;
return _mesa_hash_data(&bo->gem_handle, sizeof(bo->gem_handle));
}
static bool
panfrost_active_bos_cmp(const void *keya, const void *keyb)
{
const struct panfrost_bo *a = keya, *b = keyb;
return a->gem_handle == b->gem_handle;
}
void
panfrost_open_device(void *memctx, int fd, struct panfrost_device *dev)
{
dev->fd = fd;
dev->memctx = memctx;
dev->gpu_id = panfrost_query_gpu_version(fd);
dev->core_count = panfrost_query_core_count(fd);
dev->thread_tls_alloc = panfrost_query_thread_tls_alloc(fd);
dev->kernel_version = drmGetVersion(fd);
dev->quirks = panfrost_get_quirks(dev->gpu_id);
pthread_mutex_init(&dev->active_bos_lock, NULL);
dev->active_bos = _mesa_set_create(memctx,
panfrost_active_bos_hash, panfrost_active_bos_cmp);
pthread_mutex_init(&dev->bo_cache.lock, NULL);
list_inithead(&dev->bo_cache.lru);
for (unsigned i = 0; i < ARRAY_SIZE(dev->bo_cache.buckets); ++i)
list_inithead(&dev->bo_cache.buckets[i]);
}
void
panfrost_close_device(struct panfrost_device *dev)
{
panfrost_bo_cache_evict_all(dev);
pthread_mutex_destroy(&dev->bo_cache.lock);
pthread_mutex_destroy(&dev->active_bos_lock);
drmFreeVersion(dev->kernel_version);
}
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