/*
* 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 <linux/io-mapping.h>
#include <linux/pci.h>
#include <drm/drm_drv.h>
#include <drm/drm_managed.h>
#include <drm/drm_probe_helper.h>
#include "qxl_drv.h"
#include "qxl_object.h"
static bool qxl_check_device(struct qxl_device *qdev)
{
struct qxl_rom *rom = qdev->rom;
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("%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);
return true;
}
static void setup_hw_slot(struct qxl_device *qdev, struct qxl_memslot *slot)
{
qdev->ram_header->mem_slot.mem_start = slot->start_phys_addr;
qdev->ram_header->mem_slot.mem_end = slot->start_phys_addr + slot->size;
qxl_io_memslot_add(qdev, qdev->rom->slots_start + slot->index);
}
static void setup_slot(struct qxl_device *qdev,
struct qxl_memslot *slot,
unsigned int slot_index,
const char *slot_name,
unsigned long start_phys_addr,
unsigned long size)
{
uint64_t high_bits;
slot->index = slot_index;
slot->name = slot_name;
slot->start_phys_addr = start_phys_addr;
slot->size = size;
setup_hw_slot(qdev, slot);
slot->generation = qdev->rom->slot_generation;
high_bits = (qdev->rom->slots_start + slot->index)
<< qdev->rom->slot_gen_bits;
high_bits |= slot->generation;
high_bits <<= (64 - (qdev->rom->slot_gen_bits + qdev->rom->slot_id_bits));
slot->high_bits = high_bits;
DRM_INFO("slot %d (%s): base 0x%08lx, size 0x%08lx\n",
slot->index, slot->name,
(unsigned long)slot->start_phys_addr,
(unsigned long)slot->size);
}
void qxl_reinit_memslots(struct qxl_device *qdev)
{
setup_hw_slot(qdev, &qdev->main_slot);
setup_hw_slot(qdev, &qdev->surfaces_slot);
}
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 pci_dev *pdev)
{
int r, sb;
pci_set_drvdata(pdev, &qdev->ddev);
mutex_init(&qdev->gem.mutex);
mutex_init(&qdev->update_area_mutex);
mutex_init(&qdev->release_mutex);
mutex_init(&qdev->surf_evict_mutex);
qxl_gem_init(qdev);
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->io_base = pci_resource_start(pdev, 3);
qdev->vram_mapping = io_mapping_create_wc(qdev->vram_base, pci_resource_len(pdev, 0));
if (!qdev->vram_mapping) {
pr_err("Unable to create vram_mapping");
return -ENOMEM;
}
if (pci_resource_len(pdev, 4) > 0) {
/* 64bit surface bar present */
sb = 4;
qdev->surfaceram_base = pci_resource_start(pdev, sb);
qdev->surfaceram_size = pci_resource_len(pdev, sb);
qdev->surface_mapping =
io_mapping_create_wc(qdev->surfaceram_base,
qdev->surfaceram_size);
}
if (qdev->surface_mapping == NULL) {
/* 64bit surface bar not present (or mapping failed) */
sb = 1;
qdev->surfaceram_base = pci_resource_start(pdev, sb);
qdev->surfaceram_size = pci_resource_len(pdev, sb);
qdev->surface_mapping =
io_mapping_create_wc(qdev->surfaceram_base,
qdev->surfaceram_size);
if (!qdev->surface_mapping) {
pr_err("Unable to create surface_mapping");
r = -ENOMEM;
goto vram_mapping_free;
}
}
DRM_DEBUG_KMS("qxl: vram %llx-%llx(%dM %dk), surface %llx-%llx(%dM %dk, %s)\n",
(unsigned long long)qdev->vram_base,
(unsigned long long)pci_resource_end(pdev, 0),
(int)pci_resource_len(pdev, 0) / 1024 / 1024,
(int)pci_resource_len(pdev, 0) / 1024,
(unsigned long long)qdev->surfaceram_base,
(unsigned long long)pci_resource_end(pdev, sb),
(int)qdev->surfaceram_size / 1024 / 1024,
(int)qdev->surfaceram_size / 1024,
(sb == 4) ? "64bit" : "32bit");
qdev->rom = ioremap_wc(qdev->rom_base, qdev->rom_size);
if (!qdev->rom) {
pr_err("Unable to ioremap ROM\n");
r = -ENOMEM;
goto surface_mapping_free;
}
if (!qxl_check_device(qdev)) {
r = -ENODEV;
goto rom_unmap;
}
r = qxl_bo_init(qdev);
if (r) {
DRM_ERROR("bo init failed %d\n", r);
goto rom_unmap;
}
qdev->ram_header = ioremap_wc(qdev->vram_base +
qdev->rom->ram_header_offset,
sizeof(*qdev->ram_header));
if (!qdev->ram_header) {
DRM_ERROR("Unable to ioremap RAM header\n");
r = -ENOMEM;
goto bo_fini;
}
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,
&qdev->display_event);
if (!qdev->command_ring) {
DRM_ERROR("Unable to create command ring\n");
r = -ENOMEM;
goto ram_header_unmap;
}
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_CURSOR,
&qdev->cursor_event);
if (!qdev->cursor_ring) {
DRM_ERROR("Unable to create cursor ring\n");
r = -ENOMEM;
goto command_ring_free;
}
qdev->release_ring = qxl_ring_create(
&(qdev->ram_header->release_ring_hdr),
sizeof(uint64_t),
QXL_RELEASE_RING_SIZE, 0,
NULL);
if (!qdev->release_ring) {
DRM_ERROR("Unable to create release ring\n");
r = -ENOMEM;
goto cursor_ring_free;
}
idr_init_base(&qdev->release_idr, 1);
spin_lock_init(&qdev->release_idr_lock);
spin_lock_init(&qdev->release_lock);
idr_init_base(&qdev->surf_id_idr, 1);
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) {
DRM_ERROR("Unable to init qxl irq\n");
goto release_ring_free;
}
/*
* Note that virtual is surface0. We rely on the single ioremap done
* before.
*/
setup_slot(qdev, &qdev->main_slot, 0, "main",
(unsigned long)qdev->vram_base,
(unsigned long)qdev->rom->ram_header_offset);
setup_slot(qdev, &qdev->surfaces_slot, 1, "surfaces",
(unsigned long)qdev->surfaceram_base,
(unsigned long)qdev->surfaceram_size);
INIT_WORK(&qdev->gc_work, qxl_gc_work);
return 0;
release_ring_free:
qxl_ring_free(qdev->release_ring);
cursor_ring_free:
qxl_ring_free(qdev->cursor_ring);
command_ring_free:
qxl_ring_free(qdev->command_ring);
ram_header_unmap:
iounmap(qdev->ram_header);
bo_fini:
qxl_bo_fini(qdev);
rom_unmap:
iounmap(qdev->rom);
surface_mapping_free:
io_mapping_free(qdev->surface_mapping);
vram_mapping_free:
io_mapping_free(qdev->vram_mapping);
return r;
}
void qxl_device_fini(struct qxl_device *qdev)
{
int cur_idx;
/* check if qxl_device_init() was successful (gc_work is initialized last) */
if (!qdev->gc_work.func)
return;
for (cur_idx = 0; cur_idx < 3; cur_idx++) {
if (!qdev->current_release_bo[cur_idx])
continue;
qxl_bo_unpin(qdev->current_release_bo[cur_idx]);
qxl_bo_unref(&qdev->current_release_bo[cur_idx]);
qdev->current_release_bo_offset[cur_idx] = 0;
qdev->current_release_bo[cur_idx] = NULL;
}
/*
* Ask host to release resources (+fill release ring),
* then wait for the release actually happening.
*/
qxl_io_notify_oom(qdev);
wait_event_timeout(qdev->release_event,
atomic_read(&qdev->release_count) == 0,
HZ);
flush_work(&qdev->gc_work);
qxl_surf_evict(qdev);
qxl_vram_evict(qdev);
qxl_gem_fini(qdev);
qxl_bo_fini(qdev);
qxl_ring_free(qdev->command_ring);
qxl_ring_free(qdev->cursor_ring);
qxl_ring_free(qdev->release_ring);
io_mapping_free(qdev->surface_mapping);
io_mapping_free(qdev->vram_mapping);
iounmap(qdev->ram_header);
iounmap(qdev->rom);
qdev->rom = NULL;
}
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