Lines Matching +full:count +full:- +full:width
1 // SPDX-License-Identifier: GPL-2.0
5 * See mdpy-defs.h for device specs
30 #include "mdpy-defs.h"
53 u32 width; member
58 .type.pretty_name = MDPY_CLASS_NAME "-" MDPY_TYPE_1,
61 .width = 640,
65 .type.pretty_name = MDPY_CLASS_NAME "-" MDPY_TYPE_2,
68 .width = 1024,
72 .type.pretty_name = MDPY_CLASS_NAME "-" MDPY_TYPE_3,
75 .width = 1920,
109 STORE_LE16((u16 *) &mdev_state->vconfig[PCI_VENDOR_ID], in mdpy_create_config_space()
111 STORE_LE16((u16 *) &mdev_state->vconfig[PCI_DEVICE_ID], in mdpy_create_config_space()
113 STORE_LE16((u16 *) &mdev_state->vconfig[PCI_SUBSYSTEM_VENDOR_ID], in mdpy_create_config_space()
115 STORE_LE16((u16 *) &mdev_state->vconfig[PCI_SUBSYSTEM_ID], in mdpy_create_config_space()
118 STORE_LE16((u16 *) &mdev_state->vconfig[PCI_COMMAND], in mdpy_create_config_space()
120 STORE_LE16((u16 *) &mdev_state->vconfig[PCI_STATUS], in mdpy_create_config_space()
122 STORE_LE16((u16 *) &mdev_state->vconfig[PCI_CLASS_DEVICE], in mdpy_create_config_space()
124 mdev_state->vconfig[PCI_CLASS_REVISION] = 0x01; in mdpy_create_config_space()
126 STORE_LE32((u32 *) &mdev_state->vconfig[PCI_BASE_ADDRESS_0], in mdpy_create_config_space()
130 mdev_state->bar_mask = ~(mdev_state->memsize) + 1; in mdpy_create_config_space()
133 mdev_state->vconfig[PCI_CAPABILITY_LIST] = MDPY_VENDORCAP_OFFSET; in mdpy_create_config_space()
134 mdev_state->vconfig[MDPY_VENDORCAP_OFFSET + 0] = 0x09; /* vendor cap */ in mdpy_create_config_space()
135 mdev_state->vconfig[MDPY_VENDORCAP_OFFSET + 1] = 0x00; /* next ptr */ in mdpy_create_config_space()
136 mdev_state->vconfig[MDPY_VENDORCAP_OFFSET + 2] = MDPY_VENDORCAP_SIZE; in mdpy_create_config_space()
137 STORE_LE32((u32 *) &mdev_state->vconfig[MDPY_FORMAT_OFFSET], in mdpy_create_config_space()
138 mdev_state->type->format); in mdpy_create_config_space()
139 STORE_LE32((u32 *) &mdev_state->vconfig[MDPY_WIDTH_OFFSET], in mdpy_create_config_space()
140 mdev_state->type->width); in mdpy_create_config_space()
141 STORE_LE32((u32 *) &mdev_state->vconfig[MDPY_HEIGHT_OFFSET], in mdpy_create_config_space()
142 mdev_state->type->height); in mdpy_create_config_space()
146 char *buf, u32 count) in handle_pci_cfg_write() argument
148 struct device *dev = mdev_dev(mdev_state->mdev); in handle_pci_cfg_write()
156 cfg_addr = (cfg_addr & mdev_state->bar_mask); in handle_pci_cfg_write()
163 cfg_addr |= (mdev_state->vconfig[offset] & in handle_pci_cfg_write()
165 STORE_LE32(&mdev_state->vconfig[offset], cfg_addr); in handle_pci_cfg_write()
171 size_t count, loff_t pos, bool is_write) in mdev_access() argument
175 mutex_lock(&mdev_state->ops_lock); in mdev_access()
179 handle_pci_cfg_write(mdev_state, pos, buf, count); in mdev_access()
181 memcpy(buf, (mdev_state->vconfig + pos), count); in mdev_access()
184 (pos + count <= in mdev_access()
185 MDPY_MEMORY_BAR_OFFSET + mdev_state->memsize)) { in mdev_access()
186 pos -= MDPY_MEMORY_BAR_OFFSET; in mdev_access()
188 memcpy(mdev_state->memblk, buf, count); in mdev_access()
190 memcpy(buf, mdev_state->memblk, count); in mdev_access()
193 dev_info(mdev_state->vdev.dev, in mdev_access()
196 ret = -1; in mdev_access()
200 ret = count; in mdev_access()
204 mutex_unlock(&mdev_state->ops_lock); in mdev_access()
214 stride = mdev_state->type->width * mdev_state->type->bytepp; in mdpy_reset()
215 for (i = 0; i < mdev_state->type->height; i++) in mdpy_reset()
216 memset(mdev_state->memblk + i * stride, in mdpy_reset()
217 i * 255 / mdev_state->type->height, in mdpy_reset()
226 struct mdev_device *mdev = to_mdev_device(vdev->dev); in mdpy_init_dev()
228 container_of(mdev->type, struct mdpy_type, type); in mdpy_init_dev()
230 int ret = -ENOMEM; in mdpy_init_dev()
232 mdev_state->vconfig = kzalloc(MDPY_CONFIG_SPACE_SIZE, GFP_KERNEL); in mdpy_init_dev()
233 if (!mdev_state->vconfig) in mdpy_init_dev()
236 fbsize = roundup_pow_of_two(type->width * type->height * type->bytepp); in mdpy_init_dev()
238 mdev_state->memblk = vmalloc_user(fbsize); in mdpy_init_dev()
239 if (!mdev_state->memblk) in mdpy_init_dev()
242 mutex_init(&mdev_state->ops_lock); in mdpy_init_dev()
243 mdev_state->mdev = mdev; in mdpy_init_dev()
244 mdev_state->type = type; in mdpy_init_dev()
245 mdev_state->memsize = fbsize; in mdpy_init_dev()
249 dev_info(vdev->dev, "%s: %s (%dx%d)\n", __func__, type->type.pretty_name, in mdpy_init_dev()
250 type->width, type->height); in mdpy_init_dev()
254 kfree(mdev_state->vconfig); in mdpy_init_dev()
263 mdev_state = vfio_alloc_device(mdev_state, vdev, &mdev->dev, in mdpy_probe()
268 ret = vfio_register_emulated_iommu_dev(&mdev_state->vdev); in mdpy_probe()
271 dev_set_drvdata(&mdev->dev, mdev_state); in mdpy_probe()
275 vfio_put_device(&mdev_state->vdev); in mdpy_probe()
284 vfree(mdev_state->memblk); in mdpy_release_dev()
285 kfree(mdev_state->vconfig); in mdpy_release_dev()
290 struct mdev_state *mdev_state = dev_get_drvdata(&mdev->dev); in mdpy_remove()
292 dev_info(&mdev->dev, "%s\n", __func__); in mdpy_remove()
294 vfio_unregister_group_dev(&mdev_state->vdev); in mdpy_remove()
295 vfio_put_device(&mdev_state->vdev); in mdpy_remove()
299 size_t count, loff_t *ppos) in mdpy_read() argument
306 while (count) { in mdpy_read()
309 if (count >= 4 && !(*ppos % 4)) { in mdpy_read()
321 } else if (count >= 2 && !(*ppos % 2)) { in mdpy_read()
347 count -= filled; in mdpy_read()
356 return -EFAULT; in mdpy_read()
360 size_t count, loff_t *ppos) in mdpy_write() argument
367 while (count) { in mdpy_write()
370 if (count >= 4 && !(*ppos % 4)) { in mdpy_write()
382 } else if (count >= 2 && !(*ppos % 2)) { in mdpy_write()
407 count -= filled; in mdpy_write()
415 return -EFAULT; in mdpy_write()
423 if (vma->vm_pgoff != MDPY_MEMORY_BAR_OFFSET >> PAGE_SHIFT) in mdpy_mmap()
424 return -EINVAL; in mdpy_mmap()
425 if (vma->vm_end < vma->vm_start) in mdpy_mmap()
426 return -EINVAL; in mdpy_mmap()
427 if (vma->vm_end - vma->vm_start > mdev_state->memsize) in mdpy_mmap()
428 return -EINVAL; in mdpy_mmap()
429 if ((vma->vm_flags & VM_SHARED) == 0) in mdpy_mmap()
430 return -EINVAL; in mdpy_mmap()
432 return remap_vmalloc_range(vma, mdev_state->memblk, 0); in mdpy_mmap()
439 if (region_info->index >= VFIO_PCI_NUM_REGIONS && in mdpy_get_region_info()
440 region_info->index != MDPY_DISPLAY_REGION) in mdpy_get_region_info()
441 return -EINVAL; in mdpy_get_region_info()
443 switch (region_info->index) { in mdpy_get_region_info()
445 region_info->offset = 0; in mdpy_get_region_info()
446 region_info->size = MDPY_CONFIG_SPACE_SIZE; in mdpy_get_region_info()
447 region_info->flags = (VFIO_REGION_INFO_FLAG_READ | in mdpy_get_region_info()
452 region_info->offset = MDPY_MEMORY_BAR_OFFSET; in mdpy_get_region_info()
453 region_info->size = mdev_state->memsize; in mdpy_get_region_info()
454 region_info->flags = (VFIO_REGION_INFO_FLAG_READ | in mdpy_get_region_info()
459 region_info->size = 0; in mdpy_get_region_info()
460 region_info->offset = 0; in mdpy_get_region_info()
461 region_info->flags = 0; in mdpy_get_region_info()
469 irq_info->count = 0; in mdpy_get_irq_info()
475 dev_info->flags = VFIO_DEVICE_FLAGS_PCI; in mdpy_get_device_info()
476 dev_info->num_regions = VFIO_PCI_NUM_REGIONS; in mdpy_get_device_info()
477 dev_info->num_irqs = VFIO_PCI_NUM_IRQS; in mdpy_get_device_info()
484 if (plane->flags & VFIO_GFX_PLANE_TYPE_PROBE) { in mdpy_query_gfx_plane()
485 if (plane->flags == (VFIO_GFX_PLANE_TYPE_PROBE | in mdpy_query_gfx_plane()
488 return -EINVAL; in mdpy_query_gfx_plane()
491 if (plane->flags != VFIO_GFX_PLANE_TYPE_REGION) in mdpy_query_gfx_plane()
492 return -EINVAL; in mdpy_query_gfx_plane()
494 plane->drm_format = mdev_state->type->format; in mdpy_query_gfx_plane()
495 plane->width = mdev_state->type->width; in mdpy_query_gfx_plane()
496 plane->height = mdev_state->type->height; in mdpy_query_gfx_plane()
497 plane->stride = (mdev_state->type->width * in mdpy_query_gfx_plane()
498 mdev_state->type->bytepp); in mdpy_query_gfx_plane()
499 plane->size = mdev_state->memsize; in mdpy_query_gfx_plane()
500 plane->region_index = MDPY_DISPLAY_REGION; in mdpy_query_gfx_plane()
503 plane->drm_format_mod = 0; in mdpy_query_gfx_plane()
504 plane->x_pos = 0; in mdpy_query_gfx_plane()
505 plane->y_pos = 0; in mdpy_query_gfx_plane()
506 plane->x_hot = 0; in mdpy_query_gfx_plane()
507 plane->y_hot = 0; in mdpy_query_gfx_plane()
528 return -EFAULT; in mdpy_ioctl()
531 return -EINVAL; in mdpy_ioctl()
537 memcpy(&mdev_state->dev_info, &info, sizeof(info)); in mdpy_ioctl()
540 return -EFAULT; in mdpy_ioctl()
553 return -EFAULT; in mdpy_ioctl()
556 return -EINVAL; in mdpy_ioctl()
564 return -EFAULT; in mdpy_ioctl()
573 minsz = offsetofend(struct vfio_irq_info, count); in mdpy_ioctl()
576 return -EFAULT; in mdpy_ioctl()
579 (info.index >= mdev_state->dev_info.num_irqs)) in mdpy_ioctl()
580 return -EINVAL; in mdpy_ioctl()
587 return -EFAULT; in mdpy_ioctl()
600 return -EFAULT; in mdpy_ioctl()
603 return -EINVAL; in mdpy_ioctl()
610 return -EFAULT; in mdpy_ioctl()
616 return -EINVAL; in mdpy_ioctl()
621 return -ENOTTY; in mdpy_ioctl()
631 mdev_state->type->width, in resolution_show()
632 mdev_state->type->height); in resolution_show()
656 type->width, type->height); in mdpy_show_description()
760 module_param_named(count, mdpy_driver.max_instances, int, 0444);
761 MODULE_PARM_DESC(count, "number of " MDPY_NAME " devices");