From 9ca8dbcc65cfc63d6f5ef3312a33184e1d726e00 Mon Sep 17 00:00:00 2001 From: Yunhong Jiang Date: Tue, 4 Aug 2015 12:17:53 -0700 Subject: Add the rt linux 4.1.3-rt3 as base Import the rt linux 4.1.3-rt3 as OPNFV kvm base. It's from git://git.kernel.org/pub/scm/linux/kernel/git/rt/linux-rt-devel.git linux-4.1.y-rt and the base is: commit 0917f823c59692d751951bf5ea699a2d1e2f26a2 Author: Sebastian Andrzej Siewior Date: Sat Jul 25 12:13:34 2015 +0200 Prepare v4.1.3-rt3 Signed-off-by: Sebastian Andrzej Siewior We lose all the git history this way and it's not good. We should apply another opnfv project repo in future. Change-Id: I87543d81c9df70d99c5001fbdf646b202c19f423 Signed-off-by: Yunhong Jiang --- kernel/drivers/gpu/drm/qxl/qxl_kms.c | 350 +++++++++++++++++++++++++++++++++++ 1 file changed, 350 insertions(+) create mode 100644 kernel/drivers/gpu/drm/qxl/qxl_kms.c (limited to 'kernel/drivers/gpu/drm/qxl/qxl_kms.c') diff --git a/kernel/drivers/gpu/drm/qxl/qxl_kms.c b/kernel/drivers/gpu/drm/qxl/qxl_kms.c new file mode 100644 index 000000000..b2977a181 --- /dev/null +++ b/kernel/drivers/gpu/drm/qxl/qxl_kms.c @@ -0,0 +1,350 @@ +/* + * 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 +#include + +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 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); +} + +static int qxl_device_init(struct qxl_device *qdev, + struct drm_device *ddev, + struct pci_dev *pdev, + unsigned long flags) +{ + int r, sb; + + 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->io_base = pci_resource_start(pdev, 3); + + qdev->vram_mapping = io_mapping_create_wc(qdev->vram_base, pci_resource_len(pdev, 0)); + + 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); + } + + 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"); + 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); + 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) + 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); + DRM_INFO("surface mem slot %d [%lx,%lx]\n", + qdev->surfaces_mem_slot, + (unsigned long)qdev->surfaceram_base, + (unsigned long)qdev->surfaceram_size); + + + 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; + + drm_vblank_cleanup(dev); + + 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 = drm_vblank_init(dev, 1); + if (r) + goto unload; + + r = qxl_modeset_init(qdev); + if (r) + goto unload; + + drm_kms_helper_poll_init(qdev->ddev); + + return 0; +unload: + qxl_driver_unload(dev); + +out: + kfree(qdev); + return r; +} + + -- cgit 1.2.3-korg