Adding upstream version 6.1.76.upstream/6.1.76upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 554 insertions, 0 deletions

diff --git a/drivers/gpu/drm/gma500/framebuffer.c b/drivers/gpu/drm/gma500/framebuffer.c
new file mode 100644
index 000000000..aa3ecf771
--- /dev/null
+++ b/drivers/gpu/drm/gma500/framebuffer.c
@@ -0,0 +1,554 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/**************************************************************************
+ * Copyright (c) 2007-2011, Intel Corporation.
+ * All Rights Reserved.
+ *
+ **************************************************************************/
+
+#include <linux/console.h>
+#include <linux/delay.h>
+#include <linux/errno.h>
+#include <linux/init.h>
+#include <linux/kernel.h>
+#include <linux/mm.h>
+#include <linux/module.h>
+#include <linux/pfn_t.h>
+#include <linux/slab.h>
+#include <linux/string.h>
+#include <linux/tty.h>
+
+#include <drm/drm.h>
+#include <drm/drm_crtc.h>
+#include <drm/drm_fb_helper.h>
+#include <drm/drm_fourcc.h>
+#include <drm/drm_framebuffer.h>
+#include <drm/drm_gem_framebuffer_helper.h>
+
+#include "framebuffer.h"
+#include "gem.h"
+#include "psb_drv.h"
+#include "psb_intel_drv.h"
+#include "psb_intel_reg.h"
+
+static const struct drm_framebuffer_funcs psb_fb_funcs = {
+	.destroy = drm_gem_fb_destroy,
+	.create_handle = drm_gem_fb_create_handle,
+};
+
+#define CMAP_TOHW(_val, _width) ((((_val) << (_width)) + 0x7FFF - (_val)) >> 16)
+
+static int psbfb_setcolreg(unsigned regno, unsigned red, unsigned green,
+			   unsigned blue, unsigned transp,
+			   struct fb_info *info)
+{
+	struct drm_fb_helper *fb_helper = info->par;
+	struct drm_framebuffer *fb = fb_helper->fb;
+	uint32_t v;
+
+	if (!fb)
+		return -ENOMEM;
+
+	if (regno > 255)
+		return 1;
+
+	red = CMAP_TOHW(red, info->var.red.length);
+	blue = CMAP_TOHW(blue, info->var.blue.length);
+	green = CMAP_TOHW(green, info->var.green.length);
+	transp = CMAP_TOHW(transp, info->var.transp.length);
+
+	v = (red << info->var.red.offset) |
+	    (green << info->var.green.offset) |
+	    (blue << info->var.blue.offset) |
+	    (transp << info->var.transp.offset);
+
+	if (regno < 16) {
+		switch (fb->format->cpp[0] * 8) {
+		case 16:
+			((uint32_t *) info->pseudo_palette)[regno] = v;
+			break;
+		case 24:
+		case 32:
+			((uint32_t *) info->pseudo_palette)[regno] = v;
+			break;
+		}
+	}
+
+	return 0;
+}
+
+static vm_fault_t psbfb_vm_fault(struct vm_fault *vmf)
+{
+	struct vm_area_struct *vma = vmf->vma;
+	struct drm_framebuffer *fb = vma->vm_private_data;
+	struct drm_device *dev = fb->dev;
+	struct drm_psb_private *dev_priv = to_drm_psb_private(dev);
+	struct psb_gem_object *pobj = to_psb_gem_object(fb->obj[0]);
+	int page_num;
+	int i;
+	unsigned long address;
+	vm_fault_t ret = VM_FAULT_SIGBUS;
+	unsigned long pfn;
+	unsigned long phys_addr = (unsigned long)dev_priv->stolen_base + pobj->offset;
+
+	page_num = vma_pages(vma);
+	address = vmf->address - (vmf->pgoff << PAGE_SHIFT);
+
+	vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
+
+	for (i = 0; i < page_num; i++) {
+		pfn = (phys_addr >> PAGE_SHIFT);
+
+		ret = vmf_insert_mixed(vma, address,
+				__pfn_to_pfn_t(pfn, PFN_DEV));
+		if (unlikely(ret & VM_FAULT_ERROR))
+			break;
+		address += PAGE_SIZE;
+		phys_addr += PAGE_SIZE;
+	}
+	return ret;
+}
+
+static void psbfb_vm_open(struct vm_area_struct *vma)
+{
+}
+
+static void psbfb_vm_close(struct vm_area_struct *vma)
+{
+}
+
+static const struct vm_operations_struct psbfb_vm_ops = {
+	.fault	= psbfb_vm_fault,
+	.open	= psbfb_vm_open,
+	.close	= psbfb_vm_close
+};
+
+static int psbfb_mmap(struct fb_info *info, struct vm_area_struct *vma)
+{
+	struct drm_fb_helper *fb_helper = info->par;
+	struct drm_framebuffer *fb = fb_helper->fb;
+
+	if (vma->vm_pgoff != 0)
+		return -EINVAL;
+	if (vma->vm_pgoff > (~0UL >> PAGE_SHIFT))
+		return -EINVAL;
+
+	/*
+	 * If this is a GEM object then info->screen_base is the virtual
+	 * kernel remapping of the object. FIXME: Review if this is
+	 * suitable for our mmap work
+	 */
+	vma->vm_ops = &psbfb_vm_ops;
+	vma->vm_private_data = (void *)fb;
+	vma->vm_flags |= VM_IO | VM_MIXEDMAP | VM_DONTEXPAND | VM_DONTDUMP;
+	return 0;
+}
+
+static const struct fb_ops psbfb_unaccel_ops = {
+	.owner = THIS_MODULE,
+	DRM_FB_HELPER_DEFAULT_OPS,
+	.fb_setcolreg = psbfb_setcolreg,
+	.fb_fillrect = drm_fb_helper_cfb_fillrect,
+	.fb_copyarea = drm_fb_helper_cfb_copyarea,
+	.fb_imageblit = drm_fb_helper_cfb_imageblit,
+	.fb_mmap = psbfb_mmap,
+};
+
+/**
+ *	psb_framebuffer_init	-	initialize a framebuffer
+ *	@dev: our DRM device
+ *	@fb: framebuffer to set up
+ *	@mode_cmd: mode description
+ *	@obj: backing object
+ *
+ *	Configure and fill in the boilerplate for our frame buffer. Return
+ *	0 on success or an error code if we fail.
+ */
+static int psb_framebuffer_init(struct drm_device *dev,
+					struct drm_framebuffer *fb,
+					const struct drm_mode_fb_cmd2 *mode_cmd,
+					struct drm_gem_object *obj)
+{
+	const struct drm_format_info *info;
+	int ret;
+
+	/*
+	 * Reject unknown formats, YUV formats, and formats with more than
+	 * 4 bytes per pixel.
+	 */
+	info = drm_get_format_info(dev, mode_cmd);
+	if (!info || !info->depth || info->cpp[0] > 4)
+		return -EINVAL;
+
+	if (mode_cmd->pitches[0] & 63)
+		return -EINVAL;
+
+	drm_helper_mode_fill_fb_struct(dev, fb, mode_cmd);
+	fb->obj[0] = obj;
+	ret = drm_framebuffer_init(dev, fb, &psb_fb_funcs);
+	if (ret) {
+		dev_err(dev->dev, "framebuffer init failed: %d\n", ret);
+		return ret;
+	}
+	return 0;
+}
+
+/**
+ *	psb_framebuffer_create	-	create a framebuffer backed by gt
+ *	@dev: our DRM device
+ *	@mode_cmd: the description of the requested mode
+ *	@obj: the backing object
+ *
+ *	Create a framebuffer object backed by the gt, and fill in the
+ *	boilerplate required
+ *
+ *	TODO: review object references
+ */
+
+static struct drm_framebuffer *psb_framebuffer_create
+			(struct drm_device *dev,
+			 const struct drm_mode_fb_cmd2 *mode_cmd,
+			 struct drm_gem_object *obj)
+{
+	struct drm_framebuffer *fb;
+	int ret;
+
+	fb = kzalloc(sizeof(*fb), GFP_KERNEL);
+	if (!fb)
+		return ERR_PTR(-ENOMEM);
+
+	ret = psb_framebuffer_init(dev, fb, mode_cmd, obj);
+	if (ret) {
+		kfree(fb);
+		return ERR_PTR(ret);
+	}
+	return fb;
+}
+
+/**
+ *	psbfb_create		-	create a framebuffer
+ *	@fb_helper: the framebuffer helper
+ *	@sizes: specification of the layout
+ *
+ *	Create a framebuffer to the specifications provided
+ */
+static int psbfb_create(struct drm_fb_helper *fb_helper,
+				struct drm_fb_helper_surface_size *sizes)
+{
+	struct drm_device *dev = fb_helper->dev;
+	struct drm_psb_private *dev_priv = to_drm_psb_private(dev);
+	struct pci_dev *pdev = to_pci_dev(dev->dev);
+	struct fb_info *info;
+	struct drm_framebuffer *fb;
+	struct drm_mode_fb_cmd2 mode_cmd;
+	int size;
+	int ret;
+	struct psb_gem_object *backing;
+	struct drm_gem_object *obj;
+	u32 bpp, depth;
+
+	mode_cmd.width = sizes->surface_width;
+	mode_cmd.height = sizes->surface_height;
+	bpp = sizes->surface_bpp;
+	depth = sizes->surface_depth;
+
+	/* No 24bit packed */
+	if (bpp == 24)
+		bpp = 32;
+
+	mode_cmd.pitches[0] = ALIGN(mode_cmd.width * DIV_ROUND_UP(bpp, 8), 64);
+
+	size = mode_cmd.pitches[0] * mode_cmd.height;
+	size = ALIGN(size, PAGE_SIZE);
+
+	/* Allocate the framebuffer in the GTT with stolen page backing */
+	backing = psb_gem_create(dev, size, "fb", true, PAGE_SIZE);
+	if (IS_ERR(backing))
+		return PTR_ERR(backing);
+	obj = &backing->base;
+
+	memset(dev_priv->vram_addr + backing->offset, 0, size);
+
+	info = drm_fb_helper_alloc_fbi(fb_helper);
+	if (IS_ERR(info)) {
+		ret = PTR_ERR(info);
+		goto err_drm_gem_object_put;
+	}
+
+	mode_cmd.pixel_format = drm_mode_legacy_fb_format(bpp, depth);
+
+	fb = psb_framebuffer_create(dev, &mode_cmd, obj);
+	if (IS_ERR(fb)) {
+		ret = PTR_ERR(fb);
+		goto err_drm_gem_object_put;
+	}
+
+	fb_helper->fb = fb;
+
+	info->fbops = &psbfb_unaccel_ops;
+
+	info->fix.smem_start = dev->mode_config.fb_base;
+	info->fix.smem_len = size;
+	info->fix.ywrapstep = 0;
+	info->fix.ypanstep = 0;
+
+	/* Accessed stolen memory directly */
+	info->screen_base = dev_priv->vram_addr + backing->offset;
+	info->screen_size = size;
+
+	if (dev_priv->gtt.stolen_size) {
+		info->apertures->ranges[0].base = dev->mode_config.fb_base;
+		info->apertures->ranges[0].size = dev_priv->gtt.stolen_size;
+	}
+
+	drm_fb_helper_fill_info(info, fb_helper, sizes);
+
+	info->fix.mmio_start = pci_resource_start(pdev, 0);
+	info->fix.mmio_len = pci_resource_len(pdev, 0);
+
+	/* Use default scratch pixmap (info->pixmap.flags = FB_PIXMAP_SYSTEM) */
+
+	dev_dbg(dev->dev, "allocated %dx%d fb\n", fb->width, fb->height);
+
+	return 0;
+
+err_drm_gem_object_put:
+	drm_gem_object_put(obj);
+	return ret;
+}
+
+/**
+ *	psb_user_framebuffer_create	-	create framebuffer
+ *	@dev: our DRM device
+ *	@filp: client file
+ *	@cmd: mode request
+ *
+ *	Create a new framebuffer backed by a userspace GEM object
+ */
+static struct drm_framebuffer *psb_user_framebuffer_create
+			(struct drm_device *dev, struct drm_file *filp,
+			 const struct drm_mode_fb_cmd2 *cmd)
+{
+	struct drm_gem_object *obj;
+	struct drm_framebuffer *fb;
+
+	/*
+	 *	Find the GEM object and thus the gtt range object that is
+	 *	to back this space
+	 */
+	obj = drm_gem_object_lookup(filp, cmd->handles[0]);
+	if (obj == NULL)
+		return ERR_PTR(-ENOENT);
+
+	/* Let the core code do all the work */
+	fb = psb_framebuffer_create(dev, cmd, obj);
+	if (IS_ERR(fb))
+		drm_gem_object_put(obj);
+
+	return fb;
+}
+
+static int psbfb_probe(struct drm_fb_helper *fb_helper,
+				struct drm_fb_helper_surface_size *sizes)
+{
+	struct drm_device *dev = fb_helper->dev;
+	struct drm_psb_private *dev_priv = to_drm_psb_private(dev);
+	unsigned int fb_size;
+	int bytespp;
+
+	bytespp = sizes->surface_bpp / 8;
+	if (bytespp == 3)	/* no 24bit packed */
+		bytespp = 4;
+
+	/* If the mode will not fit in 32bit then switch to 16bit to get
+	   a console on full resolution. The X mode setting server will
+	   allocate its own 32bit GEM framebuffer */
+	fb_size = ALIGN(sizes->surface_width * bytespp, 64) *
+		  sizes->surface_height;
+	fb_size = ALIGN(fb_size, PAGE_SIZE);
+
+	if (fb_size > dev_priv->vram_stolen_size) {
+                sizes->surface_bpp = 16;
+                sizes->surface_depth = 16;
+        }
+
+	return psbfb_create(fb_helper, sizes);
+}
+
+static const struct drm_fb_helper_funcs psb_fb_helper_funcs = {
+	.fb_probe = psbfb_probe,
+};
+
+static int psb_fbdev_destroy(struct drm_device *dev,
+			     struct drm_fb_helper *fb_helper)
+{
+	struct drm_framebuffer *fb = fb_helper->fb;
+
+	drm_fb_helper_unregister_fbi(fb_helper);
+
+	drm_fb_helper_fini(fb_helper);
+	drm_framebuffer_unregister_private(fb);
+	drm_framebuffer_cleanup(fb);
+
+	if (fb->obj[0])
+		drm_gem_object_put(fb->obj[0]);
+	kfree(fb);
+
+	return 0;
+}
+
+int psb_fbdev_init(struct drm_device *dev)
+{
+	struct drm_fb_helper *fb_helper;
+	struct drm_psb_private *dev_priv = to_drm_psb_private(dev);
+	int ret;
+
+	fb_helper = kzalloc(sizeof(*fb_helper), GFP_KERNEL);
+	if (!fb_helper) {
+		dev_err(dev->dev, "no memory\n");
+		return -ENOMEM;
+	}
+
+	dev_priv->fb_helper = fb_helper;
+
+	drm_fb_helper_prepare(dev, fb_helper, &psb_fb_helper_funcs);
+
+	ret = drm_fb_helper_init(dev, fb_helper);
+	if (ret)
+		goto free;
+
+	/* disable all the possible outputs/crtcs before entering KMS mode */
+	drm_helper_disable_unused_functions(dev);
+
+	ret = drm_fb_helper_initial_config(fb_helper, 32);
+	if (ret)
+		goto fini;
+
+	return 0;
+
+fini:
+	drm_fb_helper_fini(fb_helper);
+free:
+	kfree(fb_helper);
+	return ret;
+}
+
+static void psb_fbdev_fini(struct drm_device *dev)
+{
+	struct drm_psb_private *dev_priv = to_drm_psb_private(dev);
+
+	if (!dev_priv->fb_helper)
+		return;
+
+	psb_fbdev_destroy(dev, dev_priv->fb_helper);
+	kfree(dev_priv->fb_helper);
+	dev_priv->fb_helper = NULL;
+}
+
+static const struct drm_mode_config_funcs psb_mode_funcs = {
+	.fb_create = psb_user_framebuffer_create,
+	.output_poll_changed = drm_fb_helper_output_poll_changed,
+};
+
+static void psb_setup_outputs(struct drm_device *dev)
+{
+	struct drm_psb_private *dev_priv = to_drm_psb_private(dev);
+	struct drm_connector_list_iter conn_iter;
+	struct drm_connector *connector;
+
+	drm_mode_create_scaling_mode_property(dev);
+
+	/* It is ok for this to fail - we just don't get backlight control */
+	if (!dev_priv->backlight_property)
+		dev_priv->backlight_property = drm_property_create_range(dev, 0,
+							"backlight", 0, 100);
+	dev_priv->ops->output_init(dev);
+
+	drm_connector_list_iter_begin(dev, &conn_iter);
+	drm_for_each_connector_iter(connector, &conn_iter) {
+		struct gma_encoder *gma_encoder = gma_attached_encoder(connector);
+		struct drm_encoder *encoder = &gma_encoder->base;
+		int crtc_mask = 0, clone_mask = 0;
+
+		/* valid crtcs */
+		switch (gma_encoder->type) {
+		case INTEL_OUTPUT_ANALOG:
+			crtc_mask = (1 << 0);
+			clone_mask = (1 << INTEL_OUTPUT_ANALOG);
+			break;
+		case INTEL_OUTPUT_SDVO:
+			crtc_mask = dev_priv->ops->sdvo_mask;
+			clone_mask = 0;
+			break;
+		case INTEL_OUTPUT_LVDS:
+			crtc_mask = dev_priv->ops->lvds_mask;
+			clone_mask = 0;
+			break;
+		case INTEL_OUTPUT_MIPI:
+			crtc_mask = (1 << 0);
+			clone_mask = 0;
+			break;
+		case INTEL_OUTPUT_MIPI2:
+			crtc_mask = (1 << 2);
+			clone_mask = 0;
+			break;
+		case INTEL_OUTPUT_HDMI:
+			crtc_mask = dev_priv->ops->hdmi_mask;
+			clone_mask = (1 << INTEL_OUTPUT_HDMI);
+			break;
+		case INTEL_OUTPUT_DISPLAYPORT:
+			crtc_mask = (1 << 0) | (1 << 1);
+			clone_mask = 0;
+			break;
+		case INTEL_OUTPUT_EDP:
+			crtc_mask = (1 << 1);
+			clone_mask = 0;
+		}
+		encoder->possible_crtcs = crtc_mask;
+		encoder->possible_clones =
+		    gma_connector_clones(dev, clone_mask);
+	}
+	drm_connector_list_iter_end(&conn_iter);
+}
+
+void psb_modeset_init(struct drm_device *dev)
+{
+	struct drm_psb_private *dev_priv = to_drm_psb_private(dev);
+	struct psb_intel_mode_device *mode_dev = &dev_priv->mode_dev;
+	struct pci_dev *pdev = to_pci_dev(dev->dev);
+	int i;
+
+	if (drmm_mode_config_init(dev))
+		return;
+
+	dev->mode_config.min_width = 0;
+	dev->mode_config.min_height = 0;
+
+	dev->mode_config.funcs = &psb_mode_funcs;
+
+	/* set memory base */
+	/* Oaktrail and Poulsbo should use BAR 2*/
+	pci_read_config_dword(pdev, PSB_BSM, (u32 *)&(dev->mode_config.fb_base));
+
+	/* num pipes is 2 for PSB but 1 for Mrst */
+	for (i = 0; i < dev_priv->num_pipe; i++)
+		psb_intel_crtc_init(dev, i, mode_dev);
+
+	dev->mode_config.max_width = 4096;
+	dev->mode_config.max_height = 4096;
+
+	psb_setup_outputs(dev);
+
+	if (dev_priv->ops->errata)
+	        dev_priv->ops->errata(dev);
+
+        dev_priv->modeset = true;
+}
+
+void psb_modeset_cleanup(struct drm_device *dev)
+{
+	struct drm_psb_private *dev_priv = to_drm_psb_private(dev);
+	if (dev_priv->modeset) {
+		drm_kms_helper_poll_fini(dev);
+		psb_fbdev_fini(dev);
+	}
+}