linux/drivers/gpu/drm/qxl/qxl_kms.c

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/*
* Copyright 2013 Red Hat Inc.
*
* 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 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 COPYRIGHT HOLDER(S) OR AUTHOR(S) 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: Dave Airlie
* Alon Levy
*/
#include "qxl_drv.h"
#include "qxl_object.h"
#include <linux/io-mapping.h>
int qxl_log_level;
static void qxl_dump_mode(struct qxl_device *qdev, void *p)
{
struct qxl_mode *m = p;
DRM_DEBUG_KMS("%d: %dx%d %d bits, stride %d, %dmm x %dmm, orientation %d\n",
m->id, m->x_res, m->y_res, m->bits, m->stride, m->x_mili,
m->y_mili, m->orientation);
}
static bool qxl_check_device(struct qxl_device *qdev)
{
struct qxl_rom *rom = qdev->rom;
int mode_offset;
int i;
if (rom->magic != 0x4f525851) {
DRM_ERROR("bad rom signature %x\n", rom->magic);
return false;
}
DRM_INFO("Device Version %d.%d\n", rom->id, rom->update_id);
DRM_INFO("Compression level %d log level %d\n", rom->compression_level,
rom->log_level);
DRM_INFO("Currently using mode #%d, list at 0x%x\n",
rom->mode, rom->modes_offset);
DRM_INFO("%d io pages at offset 0x%x\n",
rom->num_io_pages, rom->pages_offset);
DRM_INFO("%d byte draw area at offset 0x%x\n",
rom->surface0_area_size, rom->draw_area_offset);
qdev->vram_size = rom->surface0_area_size;
DRM_INFO("RAM header offset: 0x%x\n", rom->ram_header_offset);
mode_offset = rom->modes_offset / 4;
qdev->mode_info.num_modes = ((u32 *)rom)[mode_offset];
DRM_INFO("rom modes offset 0x%x for %d modes\n", rom->modes_offset,
qdev->mode_info.num_modes);
qdev->mode_info.modes = (void *)((uint32_t *)rom + mode_offset + 1);
for (i = 0; i < qdev->mode_info.num_modes; i++)
qxl_dump_mode(qdev, qdev->mode_info.modes + i);
return true;
}
static uint8_t setup_slot(struct qxl_device *qdev, uint8_t slot_index_offset,
unsigned long start_phys_addr, unsigned long end_phys_addr)
{
uint64_t high_bits;
struct qxl_memslot *slot;
uint8_t slot_index;
struct qxl_ram_header *ram_header = qdev->ram_header;
slot_index = qdev->rom->slots_start + slot_index_offset;
slot = &qdev->mem_slots[slot_index];
slot->start_phys_addr = start_phys_addr;
slot->end_phys_addr = end_phys_addr;
ram_header->mem_slot.mem_start = slot->start_phys_addr;
ram_header->mem_slot.mem_end = slot->end_phys_addr;
qxl_io_memslot_add(qdev, slot_index);
slot->generation = qdev->rom->slot_generation;
high_bits = slot_index << qdev->slot_gen_bits;
high_bits |= slot->generation;
high_bits <<= (64 - (qdev->slot_gen_bits + qdev->slot_id_bits));
slot->high_bits = high_bits;
return slot_index;
}
static void qxl_gc_work(struct work_struct *work)
{
struct qxl_device *qdev = container_of(work, struct qxl_device, gc_work);
qxl_garbage_collect(qdev);
}
int qxl_device_init(struct qxl_device *qdev,
struct drm_device *ddev,
struct pci_dev *pdev,
unsigned long flags)
{
int r;
qdev->dev = &pdev->dev;
qdev->ddev = ddev;
qdev->pdev = pdev;
qdev->flags = flags;
mutex_init(&qdev->gem.mutex);
mutex_init(&qdev->update_area_mutex);
mutex_init(&qdev->release_mutex);
mutex_init(&qdev->surf_evict_mutex);
INIT_LIST_HEAD(&qdev->gem.objects);
qdev->rom_base = pci_resource_start(pdev, 2);
qdev->rom_size = pci_resource_len(pdev, 2);
qdev->vram_base = pci_resource_start(pdev, 0);
qdev->surfaceram_base = pci_resource_start(pdev, 1);
qdev->surfaceram_size = pci_resource_len(pdev, 1);
qdev->io_base = pci_resource_start(pdev, 3);
qdev->vram_mapping = io_mapping_create_wc(qdev->vram_base, pci_resource_len(pdev, 0));
qdev->surface_mapping = io_mapping_create_wc(qdev->surfaceram_base, qdev->surfaceram_size);
DRM_DEBUG_KMS("qxl: vram %p-%p(%dM %dk), surface %p-%p(%dM %dk)\n",
(void *)qdev->vram_base, (void *)pci_resource_end(pdev, 0),
(int)pci_resource_len(pdev, 0) / 1024 / 1024,
(int)pci_resource_len(pdev, 0) / 1024,
(void *)qdev->surfaceram_base,
(void *)pci_resource_end(pdev, 1),
(int)qdev->surfaceram_size / 1024 / 1024,
(int)qdev->surfaceram_size / 1024);
qdev->rom = ioremap(qdev->rom_base, qdev->rom_size);
if (!qdev->rom) {
pr_err("Unable to ioremap ROM\n");
return -ENOMEM;
}
qxl_check_device(qdev);
r = qxl_bo_init(qdev);
if (r) {
DRM_ERROR("bo init failed %d\n", r);
return r;
}
qdev->ram_header = ioremap(qdev->vram_base +
qdev->rom->ram_header_offset,
sizeof(*qdev->ram_header));
qdev->command_ring = qxl_ring_create(&(qdev->ram_header->cmd_ring_hdr),
sizeof(struct qxl_command),
QXL_COMMAND_RING_SIZE,
qdev->io_base + QXL_IO_NOTIFY_CMD,
false,
&qdev->display_event);
qdev->cursor_ring = qxl_ring_create(
&(qdev->ram_header->cursor_ring_hdr),
sizeof(struct qxl_command),
QXL_CURSOR_RING_SIZE,
qdev->io_base + QXL_IO_NOTIFY_CMD,
false,
&qdev->cursor_event);
qdev->release_ring = qxl_ring_create(
&(qdev->ram_header->release_ring_hdr),
sizeof(uint64_t),
QXL_RELEASE_RING_SIZE, 0, true,
NULL);
/* TODO - slot initialization should happen on reset. where is our
* reset handler? */
qdev->n_mem_slots = qdev->rom->slots_end;
qdev->slot_gen_bits = qdev->rom->slot_gen_bits;
qdev->slot_id_bits = qdev->rom->slot_id_bits;
qdev->va_slot_mask =
(~(uint64_t)0) >> (qdev->slot_id_bits + qdev->slot_gen_bits);
qdev->mem_slots =
kmalloc(qdev->n_mem_slots * sizeof(struct qxl_memslot),
GFP_KERNEL);
idr_init(&qdev->release_idr);
spin_lock_init(&qdev->release_idr_lock);
idr_init(&qdev->surf_id_idr);
spin_lock_init(&qdev->surf_id_idr_lock);
mutex_init(&qdev->async_io_mutex);
/* reset the device into a known state - no memslots, no primary
* created, no surfaces. */
qxl_io_reset(qdev);
/* must initialize irq before first async io - slot creation */
r = qxl_irq_init(qdev);
if (r)
return r;
/*
* Note that virtual is surface0. We rely on the single ioremap done
* before.
*/
qdev->main_mem_slot = setup_slot(qdev, 0,
(unsigned long)qdev->vram_base,
(unsigned long)qdev->vram_base + qdev->rom->ram_header_offset);
qdev->surfaces_mem_slot = setup_slot(qdev, 1,
(unsigned long)qdev->surfaceram_base,
(unsigned long)qdev->surfaceram_base + qdev->surfaceram_size);
DRM_INFO("main mem slot %d [%lx,%x)\n",
qdev->main_mem_slot,
(unsigned long)qdev->vram_base, qdev->rom->ram_header_offset);
qdev->gc_queue = create_singlethread_workqueue("qxl_gc");
INIT_WORK(&qdev->gc_work, qxl_gc_work);
r = qxl_fb_init(qdev);
if (r)
return r;
return 0;
}
static void qxl_device_fini(struct qxl_device *qdev)
{
if (qdev->current_release_bo[0])
qxl_bo_unref(&qdev->current_release_bo[0]);
if (qdev->current_release_bo[1])
qxl_bo_unref(&qdev->current_release_bo[1]);
flush_workqueue(qdev->gc_queue);
destroy_workqueue(qdev->gc_queue);
qdev->gc_queue = NULL;
qxl_ring_free(qdev->command_ring);
qxl_ring_free(qdev->cursor_ring);
qxl_ring_free(qdev->release_ring);
qxl_bo_fini(qdev);
io_mapping_free(qdev->surface_mapping);
io_mapping_free(qdev->vram_mapping);
iounmap(qdev->ram_header);
iounmap(qdev->rom);
qdev->rom = NULL;
qdev->mode_info.modes = NULL;
qdev->mode_info.num_modes = 0;
qxl_debugfs_remove_files(qdev);
}
int qxl_driver_unload(struct drm_device *dev)
{
struct qxl_device *qdev = dev->dev_private;
if (qdev == NULL)
return 0;
qxl_modeset_fini(qdev);
qxl_device_fini(qdev);
kfree(qdev);
dev->dev_private = NULL;
return 0;
}
int qxl_driver_load(struct drm_device *dev, unsigned long flags)
{
struct qxl_device *qdev;
int r;
/* require kms */
if (!drm_core_check_feature(dev, DRIVER_MODESET))
return -ENODEV;
qdev = kzalloc(sizeof(struct qxl_device), GFP_KERNEL);
if (qdev == NULL)
return -ENOMEM;
dev->dev_private = qdev;
r = qxl_device_init(qdev, dev, dev->pdev, flags);
if (r)
goto out;
r = qxl_modeset_init(qdev);
if (r) {
qxl_driver_unload(dev);
goto out;
}
return 0;
out:
kfree(qdev);
return r;
}