| /* |
| * 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 <drm/drm_crtc_helper.h> |
| #include <linux/io-mapping.h> |
| |
| int qxl_log_level; |
| |
| 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, int slot_index, |
| struct qxl_memslot *slot) |
| { |
| qdev->ram_header->mem_slot.mem_start = slot->start_phys_addr; |
| qdev->ram_header->mem_slot.mem_end = slot->end_phys_addr; |
| qxl_io_memslot_add(qdev, slot_index); |
| } |
| |
| 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; |
| |
| 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; |
| |
| setup_hw_slot(qdev, slot_index, slot); |
| |
| 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; |
| } |
| |
| void qxl_reinit_memslots(struct qxl_device *qdev) |
| { |
| setup_hw_slot(qdev, qdev->main_mem_slot, &qdev->mem_slots[qdev->main_mem_slot]); |
| setup_hw_slot(qdev, qdev->surfaces_mem_slot, &qdev->mem_slots[qdev->surfaces_mem_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 drm_driver *drv, |
| struct pci_dev *pdev) |
| { |
| int r, sb; |
| |
| r = drm_dev_init(&qdev->ddev, drv, &pdev->dev); |
| if (r) { |
| pr_err("Unable to init drm dev"); |
| goto error; |
| } |
| |
| qdev->ddev.pdev = pdev; |
| pci_set_drvdata(pdev, &qdev->ddev); |
| qdev->ddev.dev_private = qdev; |
| |
| 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"); |
| r = -ENOMEM; |
| goto error; |
| } |
| |
| 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(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 surface_mapping_free; |
| } |
| |
| r = qxl_bo_init(qdev); |
| if (r) { |
| DRM_ERROR("bo init failed %d\n", r); |
| goto rom_unmap; |
| } |
| |
| qdev->ram_header = ioremap(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, |
| false, |
| &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_CMD, |
| false, |
| &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, true, |
| NULL); |
| |
| if (!qdev->release_ring) { |
| DRM_ERROR("Unable to create release ring\n"); |
| r = -ENOMEM; |
| goto cursor_ring_free; |
| } |
| /* 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_array(qdev->n_mem_slots, sizeof(struct qxl_memslot), |
| GFP_KERNEL); |
| |
| if (!qdev->mem_slots) { |
| DRM_ERROR("Unable to alloc mem slots\n"); |
| r = -ENOMEM; |
| goto release_ring_free; |
| } |
| |
| idr_init(&qdev->release_idr); |
| spin_lock_init(&qdev->release_idr_lock); |
| spin_lock_init(&qdev->release_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) { |
| DRM_ERROR("Unable to init qxl irq\n"); |
| goto mem_slots_free; |
| } |
| |
| /* |
| * 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); |
| DRM_INFO("surface mem slot %d [%lx,%lx]\n", |
| qdev->surfaces_mem_slot, |
| (unsigned long)qdev->surfaceram_base, |
| (unsigned long)qdev->surfaceram_size); |
| |
| INIT_WORK(&qdev->gc_work, qxl_gc_work); |
| |
| return 0; |
| |
| mem_slots_free: |
| kfree(qdev->mem_slots); |
| 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); |
| error: |
| return r; |
| } |
| |
| void qxl_device_fini(struct qxl_device *qdev) |
| { |
| qxl_bo_unref(&qdev->current_release_bo[0]); |
| qxl_bo_unref(&qdev->current_release_bo[1]); |
| flush_work(&qdev->gc_work); |
| qxl_ring_free(qdev->command_ring); |
| qxl_ring_free(qdev->cursor_ring); |
| qxl_ring_free(qdev->release_ring); |
| qxl_gem_fini(qdev); |
| 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; |
| } |