1 files changed, 302 insertions, 0 deletions

diff --git a/drivers/gpu/drm/qxl/qxl_kms.c b/drivers/gpu/drm/qxl/qxl_kms.c
new file mode 100644
index 000000000000..85127ed24cfd
--- /dev/null
+++ b/drivers/gpu/drm/qxl/qxl_kms.c
@@ -0,0 +1,302 @@
+/*
+ * 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;
+}
+
+