From 2c3c1048746a4622d8c89a29670120dc8fab93c4 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sun, 7 Apr 2024 20:49:45 +0200 Subject: Adding upstream version 6.1.76. Signed-off-by: Daniel Baumann --- drivers/gpu/drm/vmwgfx/vmwgfx_gmrid_manager.c | 209 ++++++++++++++++++++++++++ 1 file changed, 209 insertions(+) create mode 100644 drivers/gpu/drm/vmwgfx/vmwgfx_gmrid_manager.c (limited to 'drivers/gpu/drm/vmwgfx/vmwgfx_gmrid_manager.c') diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_gmrid_manager.c b/drivers/gpu/drm/vmwgfx/vmwgfx_gmrid_manager.c new file mode 100644 index 000000000..60e3cc537 --- /dev/null +++ b/drivers/gpu/drm/vmwgfx/vmwgfx_gmrid_manager.c @@ -0,0 +1,209 @@ +// SPDX-License-Identifier: GPL-2.0 OR MIT +/************************************************************************** + * + * Copyright 2007-2010 VMware, Inc., Palo Alto, CA., USA + * + * 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. + * + **************************************************************************/ +/* + * Authors: Thomas Hellstrom + */ + +#include "vmwgfx_drv.h" +#include +#include +#include +#include +#include + +struct vmwgfx_gmrid_man { + struct ttm_resource_manager manager; + spinlock_t lock; + struct ida gmr_ida; + uint32_t max_gmr_ids; + uint32_t max_gmr_pages; + uint32_t used_gmr_pages; + uint8_t type; +}; + +static struct vmwgfx_gmrid_man *to_gmrid_manager(struct ttm_resource_manager *man) +{ + return container_of(man, struct vmwgfx_gmrid_man, manager); +} + +static int vmw_gmrid_man_get_node(struct ttm_resource_manager *man, + struct ttm_buffer_object *bo, + const struct ttm_place *place, + struct ttm_resource **res) +{ + struct vmwgfx_gmrid_man *gman = to_gmrid_manager(man); + int id; + + *res = kmalloc(sizeof(**res), GFP_KERNEL); + if (!*res) + return -ENOMEM; + + ttm_resource_init(bo, place, *res); + + id = ida_alloc_max(&gman->gmr_ida, gman->max_gmr_ids - 1, GFP_KERNEL); + if (id < 0) + return id; + + spin_lock(&gman->lock); + + if (gman->max_gmr_pages > 0) { + gman->used_gmr_pages += (*res)->num_pages; + /* + * Because the graphics memory is a soft limit we can try to + * expand it instead of letting the userspace apps crash. + * We're just going to have a sane limit (half of RAM) + * on the number of MOB's that we create and will try to keep + * the system running until we reach that. + */ + if (unlikely(gman->used_gmr_pages > gman->max_gmr_pages)) { + const unsigned long max_graphics_pages = totalram_pages() / 2; + uint32_t new_max_pages = 0; + + DRM_WARN("vmwgfx: mob memory overflow. Consider increasing guest RAM and graphicsMemory.\n"); + vmw_host_printf("vmwgfx, warning: mob memory overflow. Consider increasing guest RAM and graphicsMemory.\n"); + + if (gman->max_gmr_pages > (max_graphics_pages / 2)) { + DRM_WARN("vmwgfx: guest requires more than half of RAM for graphics.\n"); + new_max_pages = max_graphics_pages; + } else + new_max_pages = gman->max_gmr_pages * 2; + if (new_max_pages > gman->max_gmr_pages && new_max_pages >= gman->used_gmr_pages) { + DRM_WARN("vmwgfx: increasing guest mob limits to %u kB.\n", + ((new_max_pages) << (PAGE_SHIFT - 10))); + + gman->max_gmr_pages = new_max_pages; + } else { + char buf[256]; + snprintf(buf, sizeof(buf), + "vmwgfx, error: guest graphics is out of memory (mob limit at: %ukB).\n", + ((gman->max_gmr_pages) << (PAGE_SHIFT - 10))); + vmw_host_printf(buf); + DRM_WARN("%s", buf); + goto nospace; + } + } + } + + (*res)->start = id; + + spin_unlock(&gman->lock); + return 0; + +nospace: + gman->used_gmr_pages -= (*res)->num_pages; + spin_unlock(&gman->lock); + ida_free(&gman->gmr_ida, id); + ttm_resource_fini(man, *res); + kfree(*res); + return -ENOSPC; +} + +static void vmw_gmrid_man_put_node(struct ttm_resource_manager *man, + struct ttm_resource *res) +{ + struct vmwgfx_gmrid_man *gman = to_gmrid_manager(man); + + ida_free(&gman->gmr_ida, res->start); + spin_lock(&gman->lock); + gman->used_gmr_pages -= res->num_pages; + spin_unlock(&gman->lock); + ttm_resource_fini(man, res); + kfree(res); +} + +static void vmw_gmrid_man_debug(struct ttm_resource_manager *man, + struct drm_printer *printer) +{ + struct vmwgfx_gmrid_man *gman = to_gmrid_manager(man); + + BUG_ON(gman->type != VMW_PL_GMR && gman->type != VMW_PL_MOB); + + drm_printf(printer, "%s's used: %u pages, max: %u pages, %u id's\n", + (gman->type == VMW_PL_MOB) ? "Mob" : "GMR", + gman->used_gmr_pages, gman->max_gmr_pages, gman->max_gmr_ids); +} + +static const struct ttm_resource_manager_func vmw_gmrid_manager_func; + +int vmw_gmrid_man_init(struct vmw_private *dev_priv, int type) +{ + struct ttm_resource_manager *man; + struct vmwgfx_gmrid_man *gman = + kzalloc(sizeof(*gman), GFP_KERNEL); + + if (unlikely(!gman)) + return -ENOMEM; + + man = &gman->manager; + + man->func = &vmw_gmrid_manager_func; + man->use_tt = true; + ttm_resource_manager_init(man, &dev_priv->bdev, 0); + spin_lock_init(&gman->lock); + gman->used_gmr_pages = 0; + ida_init(&gman->gmr_ida); + gman->type = type; + + switch (type) { + case VMW_PL_GMR: + gman->max_gmr_ids = dev_priv->max_gmr_ids; + gman->max_gmr_pages = dev_priv->max_gmr_pages; + break; + case VMW_PL_MOB: + gman->max_gmr_ids = VMWGFX_NUM_MOB; + gman->max_gmr_pages = dev_priv->max_mob_pages; + break; + default: + BUG(); + } + ttm_set_driver_manager(&dev_priv->bdev, type, &gman->manager); + ttm_resource_manager_set_used(man, true); + return 0; +} + +void vmw_gmrid_man_fini(struct vmw_private *dev_priv, int type) +{ + struct ttm_resource_manager *man = ttm_manager_type(&dev_priv->bdev, type); + struct vmwgfx_gmrid_man *gman = to_gmrid_manager(man); + + ttm_resource_manager_set_used(man, false); + + ttm_resource_manager_evict_all(&dev_priv->bdev, man); + + ttm_resource_manager_cleanup(man); + + ttm_set_driver_manager(&dev_priv->bdev, type, NULL); + ida_destroy(&gman->gmr_ida); + kfree(gman); + +} + +static const struct ttm_resource_manager_func vmw_gmrid_manager_func = { + .alloc = vmw_gmrid_man_get_node, + .free = vmw_gmrid_man_put_node, + .debug = vmw_gmrid_man_debug +}; -- cgit v1.2.3