--- /dev/null
+/**************************************************************************
+ * Copyright (c) 2007-2011, Intel Corporation.
+ * All Rights Reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License along with
+ * this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Intel funded Tungsten Graphics (http://www.tungstengraphics.com) to
+ * develop this driver.
+ *
+ **************************************************************************/
+
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/errno.h>
+#include <linux/string.h>
+#include <linux/mm.h>
+#include <linux/tty.h>
+#include <linux/slab.h>
+#include <linux/delay.h>
+#include <linux/fb.h>
+#include <linux/init.h>
+#include <linux/console.h>
+
+#include <drm/drmP.h>
+#include <drm/drm.h>
+#include <drm/drm_crtc.h>
+
+#include "psb_drv.h"
+#include "psb_reg.h"
+#include "framebuffer.h"
+
+/**
+ * psb_spank - reset the 2D engine
+ * @dev_priv: our PSB DRM device
+ *
+ * Soft reset the graphics engine and then reload the necessary registers.
+ * We use this at initialisation time but it will become relevant for
+ * accelerated X later
+ */
+void psb_spank(struct drm_psb_private *dev_priv)
+{
+ PSB_WSGX32(_PSB_CS_RESET_BIF_RESET | _PSB_CS_RESET_DPM_RESET |
+ _PSB_CS_RESET_TA_RESET | _PSB_CS_RESET_USE_RESET |
+ _PSB_CS_RESET_ISP_RESET | _PSB_CS_RESET_TSP_RESET |
+ _PSB_CS_RESET_TWOD_RESET, PSB_CR_SOFT_RESET);
+ PSB_RSGX32(PSB_CR_SOFT_RESET);
+
+ msleep(1);
+
+ PSB_WSGX32(0, PSB_CR_SOFT_RESET);
+ wmb();
+ PSB_WSGX32(PSB_RSGX32(PSB_CR_BIF_CTRL) | _PSB_CB_CTRL_CLEAR_FAULT,
+ PSB_CR_BIF_CTRL);
+ wmb();
+ (void) PSB_RSGX32(PSB_CR_BIF_CTRL);
+
+ msleep(1);
+ PSB_WSGX32(PSB_RSGX32(PSB_CR_BIF_CTRL) & ~_PSB_CB_CTRL_CLEAR_FAULT,
+ PSB_CR_BIF_CTRL);
+ (void) PSB_RSGX32(PSB_CR_BIF_CTRL);
+ PSB_WSGX32(dev_priv->gtt.gatt_start, PSB_CR_BIF_TWOD_REQ_BASE);
+}
+
+/**
+ * psb2_2d_wait_available - wait for FIFO room
+ * @dev_priv: our DRM device
+ * @size: size (in dwords) of the command we want to issue
+ *
+ * Wait until there is room to load the FIFO with our data. If the
+ * device is not responding then reset it
+ */
+static int psb_2d_wait_available(struct drm_psb_private *dev_priv,
+ unsigned size)
+{
+ uint32_t avail = PSB_RSGX32(PSB_CR_2D_SOCIF);
+ unsigned long t = jiffies + HZ;
+
+ while (avail < size) {
+ avail = PSB_RSGX32(PSB_CR_2D_SOCIF);
+ if (time_after(jiffies, t)) {
+ psb_spank(dev_priv);
+ return -EIO;
+ }
+ }
+ return 0;
+}
+
+/**
+ * psb_2d_submit - submit a 2D command
+ * @dev_priv: our DRM device
+ * @cmdbuf: command to issue
+ * @size: length (in dwords)
+ *
+ * Issue one or more 2D commands to the accelerator. This needs to be
+ * serialized later when we add the GEM interfaces for acceleration
+ */
+static int psbfb_2d_submit(struct drm_psb_private *dev_priv, uint32_t *cmdbuf,
+ unsigned size)
+{
+ int ret = 0;
+ int i;
+ unsigned submit_size;
+
+ mutex_lock(&dev_priv->mutex_2d);
+ while (size > 0) {
+ submit_size = (size < 0x60) ? size : 0x60;
+ size -= submit_size;
+ ret = psb_2d_wait_available(dev_priv, submit_size);
+ if (ret)
+ break;
+
+ submit_size <<= 2;
+
+ for (i = 0; i < submit_size; i += 4)
+ PSB_WSGX32(*cmdbuf++, PSB_SGX_2D_SLAVE_PORT + i);
+
+ (void)PSB_RSGX32(PSB_SGX_2D_SLAVE_PORT + i - 4);
+ }
+ mutex_unlock(&dev_priv->mutex_2d);
+ return ret;
+}
+
+
+/**
+ * psb_accel_2d_copy_direction - compute blit order
+ * @xdir: X direction of move
+ * @ydir: Y direction of move
+ *
+ * Compute the correct order setings to ensure that an overlapping blit
+ * correctly copies all the pixels.
+ */
+static u32 psb_accel_2d_copy_direction(int xdir, int ydir)
+{
+ if (xdir < 0)
+ return (ydir < 0) ? PSB_2D_COPYORDER_BR2TL :
+ PSB_2D_COPYORDER_TR2BL;
+ else
+ return (ydir < 0) ? PSB_2D_COPYORDER_BL2TR :
+ PSB_2D_COPYORDER_TL2BR;
+}
+
+/**
+ * psb_accel_2d_copy - accelerated 2D copy
+ * @dev_priv: our DRM device
+ * @src_offset in bytes
+ * @src_stride in bytes
+ * @src_format psb 2D format defines
+ * @dst_offset in bytes
+ * @dst_stride in bytes
+ * @dst_format psb 2D format defines
+ * @src_x offset in pixels
+ * @src_y offset in pixels
+ * @dst_x offset in pixels
+ * @dst_y offset in pixels
+ * @size_x of the copied area
+ * @size_y of the copied area
+ *
+ * Format and issue a 2D accelerated copy command.
+ */
+static int psb_accel_2d_copy(struct drm_psb_private *dev_priv,
+ uint32_t src_offset, uint32_t src_stride,
+ uint32_t src_format, uint32_t dst_offset,
+ uint32_t dst_stride, uint32_t dst_format,
+ uint16_t src_x, uint16_t src_y,
+ uint16_t dst_x, uint16_t dst_y,
+ uint16_t size_x, uint16_t size_y)
+{
+ uint32_t blit_cmd;
+ uint32_t buffer[10];
+ uint32_t *buf;
+ uint32_t direction;
+
+ buf = buffer;
+
+ direction =
+ psb_accel_2d_copy_direction(src_x - dst_x, src_y - dst_y);
+
+ if (direction == PSB_2D_COPYORDER_BR2TL ||
+ direction == PSB_2D_COPYORDER_TR2BL) {
+ src_x += size_x - 1;
+ dst_x += size_x - 1;
+ }
+ if (direction == PSB_2D_COPYORDER_BR2TL ||
+ direction == PSB_2D_COPYORDER_BL2TR) {
+ src_y += size_y - 1;
+ dst_y += size_y - 1;
+ }
+
+ blit_cmd =
+ PSB_2D_BLIT_BH |
+ PSB_2D_ROT_NONE |
+ PSB_2D_DSTCK_DISABLE |
+ PSB_2D_SRCCK_DISABLE |
+ PSB_2D_USE_PAT | PSB_2D_ROP3_SRCCOPY | direction;
+
+ *buf++ = PSB_2D_FENCE_BH;
+ *buf++ =
+ PSB_2D_DST_SURF_BH | dst_format | (dst_stride <<
+ PSB_2D_DST_STRIDE_SHIFT);
+ *buf++ = dst_offset;
+ *buf++ =
+ PSB_2D_SRC_SURF_BH | src_format | (src_stride <<
+ PSB_2D_SRC_STRIDE_SHIFT);
+ *buf++ = src_offset;
+ *buf++ =
+ PSB_2D_SRC_OFF_BH | (src_x << PSB_2D_SRCOFF_XSTART_SHIFT) |
+ (src_y << PSB_2D_SRCOFF_YSTART_SHIFT);
+ *buf++ = blit_cmd;
+ *buf++ =
+ (dst_x << PSB_2D_DST_XSTART_SHIFT) | (dst_y <<
+ PSB_2D_DST_YSTART_SHIFT);
+ *buf++ =
+ (size_x << PSB_2D_DST_XSIZE_SHIFT) | (size_y <<
+ PSB_2D_DST_YSIZE_SHIFT);
+ *buf++ = PSB_2D_FLUSH_BH;
+
+ return psbfb_2d_submit(dev_priv, buffer, buf - buffer);
+}
+
+/**
+ * psbfb_copyarea_accel - copyarea acceleration for /dev/fb
+ * @info: our framebuffer
+ * @a: copyarea parameters from the framebuffer core
+ *
+ * Perform a 2D copy via the accelerator
+ */
+static void psbfb_copyarea_accel(struct fb_info *info,
+ const struct fb_copyarea *a)
+{
+ struct psb_fbdev *fbdev = info->par;
+ struct psb_framebuffer *psbfb = &fbdev->pfb;
+ struct drm_device *dev = psbfb->base.dev;
+ struct drm_framebuffer *fb = fbdev->psb_fb_helper.fb;
+ struct drm_psb_private *dev_priv = dev->dev_private;
+ uint32_t offset;
+ uint32_t stride;
+ uint32_t src_format;
+ uint32_t dst_format;
+
+ if (!fb)
+ return;
+
+ offset = psbfb->gtt->offset;
+ stride = fb->pitch;
+
+ switch (fb->depth) {
+ case 8:
+ src_format = PSB_2D_SRC_332RGB;
+ dst_format = PSB_2D_DST_332RGB;
+ break;
+ case 15:
+ src_format = PSB_2D_SRC_555RGB;
+ dst_format = PSB_2D_DST_555RGB;
+ break;
+ case 16:
+ src_format = PSB_2D_SRC_565RGB;
+ dst_format = PSB_2D_DST_565RGB;
+ break;
+ case 24:
+ case 32:
+ /* this is wrong but since we don't do blending its okay */
+ src_format = PSB_2D_SRC_8888ARGB;
+ dst_format = PSB_2D_DST_8888ARGB;
+ break;
+ default:
+ /* software fallback */
+ cfb_copyarea(info, a);
+ return;
+ }
+
+ if (!gma_power_begin(dev, false)) {
+ cfb_copyarea(info, a);
+ return;
+ }
+ psb_accel_2d_copy(dev_priv,
+ offset, stride, src_format,
+ offset, stride, dst_format,
+ a->sx, a->sy, a->dx, a->dy, a->width, a->height);
+ gma_power_end(dev);
+}
+
+/**
+ * psbfb_copyarea - 2D copy interface
+ * @info: our framebuffer
+ * @region: region to copy
+ *
+ * Copy an area of the framebuffer console either by the accelerator
+ * or directly using the cfb helpers according to the request
+ */
+void psbfb_copyarea(struct fb_info *info,
+ const struct fb_copyarea *region)
+{
+ if (unlikely(info->state != FBINFO_STATE_RUNNING))
+ return;
+
+ /* Avoid the 8 pixel erratum */
+ if (region->width == 8 || region->height == 8 ||
+ (info->flags & FBINFO_HWACCEL_DISABLED))
+ return cfb_copyarea(info, region);
+
+ psbfb_copyarea_accel(info, region);
+}
+
+/**
+ * psbfb_sync - synchronize 2D
+ * @info: our framebuffer
+ *
+ * Wait for the 2D engine to quiesce so that we can do CPU
+ * access to the framebuffer again
+ */
+int psbfb_sync(struct fb_info *info)
+{
+ struct psb_fbdev *fbdev = info->par;
+ struct psb_framebuffer *psbfb = &fbdev->pfb;
+ struct drm_device *dev = psbfb->base.dev;
+ struct drm_psb_private *dev_priv = dev->dev_private;
+ unsigned long _end = jiffies + DRM_HZ;
+ int busy = 0;
+
+ mutex_lock(&dev_priv->mutex_2d);
+ /*
+ * First idle the 2D engine.
+ */
+
+ if ((PSB_RSGX32(PSB_CR_2D_SOCIF) == _PSB_C2_SOCIF_EMPTY) &&
+ ((PSB_RSGX32(PSB_CR_2D_BLIT_STATUS) & _PSB_C2B_STATUS_BUSY) == 0))
+ goto out;
+
+ do {
+ busy = (PSB_RSGX32(PSB_CR_2D_SOCIF) != _PSB_C2_SOCIF_EMPTY);
+ cpu_relax();
+ } while (busy && !time_after_eq(jiffies, _end));
+
+ if (busy)
+ busy = (PSB_RSGX32(PSB_CR_2D_SOCIF) != _PSB_C2_SOCIF_EMPTY);
+ if (busy)
+ goto out;
+
+ do {
+ busy = ((PSB_RSGX32(PSB_CR_2D_BLIT_STATUS) &
+ _PSB_C2B_STATUS_BUSY) != 0);
+ cpu_relax();
+ } while (busy && !time_after_eq(jiffies, _end));
+ if (busy)
+ busy = ((PSB_RSGX32(PSB_CR_2D_BLIT_STATUS) &
+ _PSB_C2B_STATUS_BUSY) != 0);
+
+out:
+ mutex_unlock(&dev_priv->mutex_2d);
+ return (busy) ? -EBUSY : 0;
+}
--- /dev/null
+/**************************************************************************
+ * Copyright (c) 2007-2011, Intel Corporation.
+ * All Rights Reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License along with
+ * this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ **************************************************************************/
+
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/errno.h>
+#include <linux/string.h>
+#include <linux/mm.h>
+#include <linux/tty.h>
+#include <linux/slab.h>
+#include <linux/delay.h>
+#include <linux/fb.h>
+#include <linux/init.h>
+#include <linux/console.h>
+
+#include <drm/drmP.h>
+#include <drm/drm.h>
+#include <drm/drm_crtc.h>
+
+#include "psb_drv.h"
+#include "psb_intel_reg.h"
+#include "psb_intel_drv.h"
+#include "framebuffer.h"
+
+static void psb_user_framebuffer_destroy(struct drm_framebuffer *fb);
+static int psb_user_framebuffer_create_handle(struct drm_framebuffer *fb,
+ struct drm_file *file_priv,
+ unsigned int *handle);
+
+static const struct drm_framebuffer_funcs psb_fb_funcs = {
+ .destroy = psb_user_framebuffer_destroy,
+ .create_handle = psb_user_framebuffer_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 psb_fbdev *fbdev = info->par;
+ struct drm_framebuffer *fb = fbdev->psb_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->bits_per_pixel) {
+ case 16:
+ ((uint32_t *) info->pseudo_palette)[regno] = v;
+ break;
+ case 24:
+ case 32:
+ ((uint32_t *) info->pseudo_palette)[regno] = v;
+ break;
+ }
+ }
+
+ return 0;
+}
+
+
+void psbfb_suspend(struct drm_device *dev)
+{
+ struct drm_framebuffer *fb = 0;
+ struct psb_framebuffer *psbfb = to_psb_fb(fb);
+
+ console_lock();
+ mutex_lock(&dev->mode_config.mutex);
+ list_for_each_entry(fb, &dev->mode_config.fb_list, head) {
+ struct fb_info *info = psbfb->fbdev;
+ fb_set_suspend(info, 1);
+ drm_fb_helper_blank(FB_BLANK_POWERDOWN, info);
+ }
+ mutex_unlock(&dev->mode_config.mutex);
+ console_unlock();
+}
+
+void psbfb_resume(struct drm_device *dev)
+{
+ struct drm_framebuffer *fb = 0;
+ struct psb_framebuffer *psbfb = to_psb_fb(fb);
+
+ console_lock();
+ mutex_lock(&dev->mode_config.mutex);
+ list_for_each_entry(fb, &dev->mode_config.fb_list, head) {
+ struct fb_info *info = psbfb->fbdev;
+ fb_set_suspend(info, 0);
+ drm_fb_helper_blank(FB_BLANK_UNBLANK, info);
+ }
+ mutex_unlock(&dev->mode_config.mutex);
+ console_unlock();
+ drm_helper_disable_unused_functions(dev);
+}
+
+static int psbfb_vm_fault(struct vm_area_struct *vma, struct vm_fault *vmf)
+{
+ struct psb_framebuffer *psbfb = vma->vm_private_data;
+ struct drm_device *dev = psbfb->base.dev;
+ struct drm_psb_private *dev_priv = dev->dev_private;
+ int page_num;
+ int i;
+ unsigned long address;
+ int ret;
+ unsigned long pfn;
+ /* FIXME: assumes fb at stolen base which may not be true */
+ unsigned long phys_addr = (unsigned long)dev_priv->stolen_base;
+
+ page_num = (vma->vm_end - vma->vm_start) >> PAGE_SHIFT;
+ address = (unsigned long)vmf->virtual_address;
+
+ vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
+
+ for (i = 0; i < page_num; i++) {
+ pfn = (phys_addr >> PAGE_SHIFT);
+
+ ret = vm_insert_mixed(vma, address, pfn);
+ if (unlikely((ret == -EBUSY) || (ret != 0 && i > 0)))
+ break;
+ else if (unlikely(ret != 0)) {
+ ret = (ret == -ENOMEM) ? VM_FAULT_OOM : VM_FAULT_SIGBUS;
+ return ret;
+ }
+ address += PAGE_SIZE;
+ phys_addr += PAGE_SIZE;
+ }
+ return VM_FAULT_NOPAGE;
+}
+
+static void psbfb_vm_open(struct vm_area_struct *vma)
+{
+}
+
+static void psbfb_vm_close(struct vm_area_struct *vma)
+{
+}
+
+static 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 psb_fbdev *fbdev = info->par;
+ struct psb_framebuffer *psbfb = &fbdev->pfb;
+
+ if (vma->vm_pgoff != 0)
+ return -EINVAL;
+ if (vma->vm_pgoff > (~0UL >> PAGE_SHIFT))
+ return -EINVAL;
+
+ if (!psbfb->addr_space)
+ psbfb->addr_space = vma->vm_file->f_mapping;
+ /*
+ * 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 *)psbfb;
+ vma->vm_flags |= VM_RESERVED | VM_IO |
+ VM_MIXEDMAP | VM_DONTEXPAND;
+ return 0;
+}
+
+static int psbfb_ioctl(struct fb_info *info, unsigned int cmd,
+ unsigned long arg)
+{
+ return -ENOTTY;
+}
+
+static struct fb_ops psbfb_ops = {
+ .owner = THIS_MODULE,
+ .fb_check_var = drm_fb_helper_check_var,
+ .fb_set_par = drm_fb_helper_set_par,
+ .fb_blank = drm_fb_helper_blank,
+ .fb_setcolreg = psbfb_setcolreg,
+ .fb_fillrect = cfb_fillrect,
+ .fb_copyarea = psbfb_copyarea,
+ .fb_imageblit = cfb_imageblit,
+ .fb_mmap = psbfb_mmap,
+ .fb_sync = psbfb_sync,
+ .fb_ioctl = psbfb_ioctl,
+};
+
+static struct fb_ops psbfb_unaccel_ops = {
+ .owner = THIS_MODULE,
+ .fb_check_var = drm_fb_helper_check_var,
+ .fb_set_par = drm_fb_helper_set_par,
+ .fb_blank = drm_fb_helper_blank,
+ .fb_setcolreg = psbfb_setcolreg,
+ .fb_fillrect = cfb_fillrect,
+ .fb_copyarea = cfb_copyarea,
+ .fb_imageblit = cfb_imageblit,
+ .fb_mmap = psbfb_mmap,
+ .fb_ioctl = psbfb_ioctl,
+};
+
+/**
+ * psb_framebuffer_init - initialize a framebuffer
+ * @dev: our DRM device
+ * @fb: framebuffer to set up
+ * @mode_cmd: mode description
+ * @gt: 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 psb_framebuffer *fb,
+ struct drm_mode_fb_cmd *mode_cmd,
+ struct gtt_range *gt)
+{
+ int ret;
+
+ if (mode_cmd->pitch & 63)
+ return -EINVAL;
+ switch (mode_cmd->bpp) {
+ case 8:
+ case 16:
+ case 24:
+ case 32:
+ break;
+ default:
+ return -EINVAL;
+ }
+ ret = drm_framebuffer_init(dev, &fb->base, &psb_fb_funcs);
+ if (ret) {
+ dev_err(dev->dev, "framebuffer init failed: %d\n", ret);
+ return ret;
+ }
+ drm_helper_mode_fill_fb_struct(&fb->base, mode_cmd);
+ fb->gtt = gt;
+ return 0;
+}
+
+/**
+ * psb_framebuffer_create - create a framebuffer backed by gt
+ * @dev: our DRM device
+ * @mode_cmd: the description of the requested mode
+ * @gt: 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,
+ struct drm_mode_fb_cmd *mode_cmd,
+ struct gtt_range *gt)
+{
+ struct psb_framebuffer *fb;
+ int ret;
+
+ fb = kzalloc(sizeof(*fb), GFP_KERNEL);
+ if (!fb)
+ return ERR_PTR(-ENOMEM);
+
+ ret = psb_framebuffer_init(dev, fb, mode_cmd, gt);
+ if (ret) {
+ kfree(fb);
+ return ERR_PTR(ret);
+ }
+ return &fb->base;
+}
+
+/**
+ * psbfb_alloc - allocate frame buffer memory
+ * @dev: the DRM device
+ * @aligned_size: space needed
+ *
+ * Allocate the frame buffer. In the usual case we get a GTT range that
+ * is stolen memory backed and life is simple. If there isn't sufficient
+ * stolen memory or the system has no stolen memory we allocate a range
+ * and back it with a GEM object.
+ *
+ * In this case the GEM object has no handle.
+ *
+ * FIXME: console speed up - allocate twice the space if room and use
+ * hardware scrolling for acceleration.
+ */
+static struct gtt_range *psbfb_alloc(struct drm_device *dev, int aligned_size)
+{
+ struct gtt_range *backing;
+ /* Begin by trying to use stolen memory backing */
+ backing = psb_gtt_alloc_range(dev, aligned_size, "fb", 1);
+ if (backing) {
+ if (drm_gem_private_object_init(dev,
+ &backing->gem, aligned_size) == 0)
+ return backing;
+ psb_gtt_free_range(dev, backing);
+ }
+ /* Next try using GEM host memory */
+ backing = psb_gtt_alloc_range(dev, aligned_size, "fb(gem)", 0);
+ if (backing == NULL)
+ return NULL;
+
+ /* Now back it with an object */
+ if (drm_gem_object_init(dev, &backing->gem, aligned_size) != 0) {
+ psb_gtt_free_range(dev, backing);
+ return NULL;
+ }
+ return backing;
+}
+
+/**
+ * psbfb_create - create a framebuffer
+ * @fbdev: the framebuffer device
+ * @sizes: specification of the layout
+ *
+ * Create a framebuffer to the specifications provided
+ */
+static int psbfb_create(struct psb_fbdev *fbdev,
+ struct drm_fb_helper_surface_size *sizes)
+{
+ struct drm_device *dev = fbdev->psb_fb_helper.dev;
+ struct drm_psb_private *dev_priv = dev->dev_private;
+ struct fb_info *info;
+ struct drm_framebuffer *fb;
+ struct psb_framebuffer *psbfb = &fbdev->pfb;
+ struct drm_mode_fb_cmd mode_cmd;
+ struct device *device = &dev->pdev->dev;
+ int size;
+ int ret;
+ struct gtt_range *backing;
+
+ mode_cmd.width = sizes->surface_width;
+ mode_cmd.height = sizes->surface_height;
+ mode_cmd.bpp = sizes->surface_bpp;
+
+ /* No 24bit packed */
+ if (mode_cmd.bpp == 24)
+ mode_cmd.bpp = 32;
+
+ /* HW requires pitch to be 64 byte aligned */
+ mode_cmd.pitch = ALIGN(mode_cmd.width * ((mode_cmd.bpp + 7) / 8), 64);
+ mode_cmd.depth = sizes->surface_depth;
+
+ size = mode_cmd.pitch * mode_cmd.height;
+ size = ALIGN(size, PAGE_SIZE);
+
+ /* Allocate the framebuffer in the GTT with stolen page backing */
+ backing = psbfb_alloc(dev, size);
+ if (backing == NULL)
+ return -ENOMEM;
+
+ mutex_lock(&dev->struct_mutex);
+
+ info = framebuffer_alloc(0, device);
+ if (!info) {
+ ret = -ENOMEM;
+ goto out_err1;
+ }
+ info->par = fbdev;
+
+ ret = psb_framebuffer_init(dev, psbfb, &mode_cmd, backing);
+ if (ret)
+ goto out_unref;
+
+ fb = &psbfb->base;
+ psbfb->fbdev = info;
+
+ fbdev->psb_fb_helper.fb = fb;
+ fbdev->psb_fb_helper.fbdev = info;
+
+ strcpy(info->fix.id, "psbfb");
+
+ info->flags = FBINFO_DEFAULT;
+ /* No 2D engine */
+ if (!dev_priv->ops->accel_2d)
+ info->fbops = &psbfb_unaccel_ops;
+ else
+ info->fbops = &psbfb_ops;
+
+ ret = fb_alloc_cmap(&info->cmap, 256, 0);
+ if (ret) {
+ ret = -ENOMEM;
+ goto out_unref;
+ }
+
+ info->fix.smem_start = dev->mode_config.fb_base;
+ info->fix.smem_len = size;
+
+ if (backing->stolen) {
+ /* Accessed stolen memory directly */
+ info->screen_base = (char *)dev_priv->vram_addr +
+ backing->offset;
+ } else {
+ /* Pin the pages into the GTT and create a mapping to them */
+ psb_gtt_pin(backing);
+ info->screen_base = vm_map_ram(backing->pages, backing->npage,
+ -1, PAGE_KERNEL);
+ if (info->screen_base == NULL) {
+ psb_gtt_unpin(backing);
+ ret = -ENOMEM;
+ goto out_unref;
+ }
+ psbfb->vm_map = 1;
+ }
+ info->screen_size = size;
+
+ if (dev_priv->gtt.stolen_size) {
+ info->apertures = alloc_apertures(1);
+ if (!info->apertures) {
+ ret = -ENOMEM;
+ goto out_unref;
+ }
+ info->apertures->ranges[0].base = dev->mode_config.fb_base;
+ info->apertures->ranges[0].size = dev_priv->gtt.stolen_size;
+ }
+
+ drm_fb_helper_fill_fix(info, fb->pitch, fb->depth);
+ drm_fb_helper_fill_var(info, &fbdev->psb_fb_helper,
+ sizes->fb_width, sizes->fb_height);
+
+ info->fix.mmio_start = pci_resource_start(dev->pdev, 0);
+ info->fix.mmio_len = pci_resource_len(dev->pdev, 0);
+
+ info->pixmap.size = 64 * 1024;
+ info->pixmap.buf_align = 8;
+ info->pixmap.access_align = 32;
+ info->pixmap.flags = FB_PIXMAP_SYSTEM;
+ info->pixmap.scan_align = 1;
+
+ dev_info(dev->dev, "allocated %dx%d fb\n",
+ psbfb->base.width, psbfb->base.height);
+
+ mutex_unlock(&dev->struct_mutex);
+ return 0;
+out_unref:
+ if (backing->stolen)
+ psb_gtt_free_range(dev, backing);
+ else {
+ if (psbfb->vm_map)
+ vm_unmap_ram(info->screen_base, backing->npage);
+ drm_gem_object_unreference(&backing->gem);
+ }
+out_err1:
+ mutex_unlock(&dev->struct_mutex);
+ psb_gtt_free_range(dev, backing);
+ 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,
+ struct drm_mode_fb_cmd *cmd)
+{
+ struct gtt_range *r;
+ struct drm_gem_object *obj;
+
+ /*
+ * Find the GEM object and thus the gtt range object that is
+ * to back this space
+ */
+ obj = drm_gem_object_lookup(dev, filp, cmd->handle);
+ if (obj == NULL)
+ return ERR_PTR(-ENOENT);
+
+ /* Let the core code do all the work */
+ r = container_of(obj, struct gtt_range, gem);
+ return psb_framebuffer_create(dev, cmd, r);
+}
+
+static void psbfb_gamma_set(struct drm_crtc *crtc, u16 red, u16 green,
+ u16 blue, int regno)
+{
+}
+
+static void psbfb_gamma_get(struct drm_crtc *crtc, u16 *red,
+ u16 *green, u16 *blue, int regno)
+{
+}
+
+static int psbfb_probe(struct drm_fb_helper *helper,
+ struct drm_fb_helper_surface_size *sizes)
+{
+ struct psb_fbdev *psb_fbdev = (struct psb_fbdev *)helper;
+ int new_fb = 0;
+ int ret;
+
+ if (!helper->fb) {
+ ret = psbfb_create(psb_fbdev, sizes);
+ if (ret)
+ return ret;
+ new_fb = 1;
+ }
+ return new_fb;
+}
+
+struct drm_fb_helper_funcs psb_fb_helper_funcs = {
+ .gamma_set = psbfb_gamma_set,
+ .gamma_get = psbfb_gamma_get,
+ .fb_probe = psbfb_probe,
+};
+
+int psb_fbdev_destroy(struct drm_device *dev, struct psb_fbdev *fbdev)
+{
+ struct fb_info *info;
+ struct psb_framebuffer *psbfb = &fbdev->pfb;
+
+ if (fbdev->psb_fb_helper.fbdev) {
+ info = fbdev->psb_fb_helper.fbdev;
+
+ /* If this is our base framebuffer then kill any virtual map
+ for the framebuffer layer and unpin it */
+ if (psbfb->vm_map) {
+ vm_unmap_ram(info->screen_base, psbfb->gtt->npage);
+ psb_gtt_unpin(psbfb->gtt);
+ }
+ unregister_framebuffer(info);
+ if (info->cmap.len)
+ fb_dealloc_cmap(&info->cmap);
+ framebuffer_release(info);
+ }
+ drm_fb_helper_fini(&fbdev->psb_fb_helper);
+ drm_framebuffer_cleanup(&psbfb->base);
+
+ if (psbfb->gtt)
+ drm_gem_object_unreference(&psbfb->gtt->gem);
+ return 0;
+}
+
+int psb_fbdev_init(struct drm_device *dev)
+{
+ struct psb_fbdev *fbdev;
+ struct drm_psb_private *dev_priv = dev->dev_private;
+
+ fbdev = kzalloc(sizeof(struct psb_fbdev), GFP_KERNEL);
+ if (!fbdev) {
+ dev_err(dev->dev, "no memory\n");
+ return -ENOMEM;
+ }
+
+ dev_priv->fbdev = fbdev;
+ fbdev->psb_fb_helper.funcs = &psb_fb_helper_funcs;
+
+ drm_fb_helper_init(dev, &fbdev->psb_fb_helper, dev_priv->ops->crtcs,
+ INTELFB_CONN_LIMIT);
+
+ drm_fb_helper_single_add_all_connectors(&fbdev->psb_fb_helper);
+ drm_fb_helper_initial_config(&fbdev->psb_fb_helper, 32);
+ return 0;
+}
+
+void psb_fbdev_fini(struct drm_device *dev)
+{
+ struct drm_psb_private *dev_priv = dev->dev_private;
+
+ if (!dev_priv->fbdev)
+ return;
+
+ psb_fbdev_destroy(dev, dev_priv->fbdev);
+ kfree(dev_priv->fbdev);
+ dev_priv->fbdev = NULL;
+}
+
+static void psbfb_output_poll_changed(struct drm_device *dev)
+{
+ struct drm_psb_private *dev_priv = dev->dev_private;
+ struct psb_fbdev *fbdev = (struct psb_fbdev *)dev_priv->fbdev;
+ drm_fb_helper_hotplug_event(&fbdev->psb_fb_helper);
+}
+
+/**
+ * psb_user_framebuffer_create_handle - add hamdle to a framebuffer
+ * @fb: framebuffer
+ * @file_priv: our DRM file
+ * @handle: returned handle
+ *
+ * Our framebuffer object is a GTT range which also contains a GEM
+ * object. We need to turn it into a handle for userspace. GEM will do
+ * the work for us
+ */
+static int psb_user_framebuffer_create_handle(struct drm_framebuffer *fb,
+ struct drm_file *file_priv,
+ unsigned int *handle)
+{
+ struct psb_framebuffer *psbfb = to_psb_fb(fb);
+ struct gtt_range *r = psbfb->gtt;
+ return drm_gem_handle_create(file_priv, &r->gem, handle);
+}
+
+/**
+ * psb_user_framebuffer_destroy - destruct user created fb
+ * @fb: framebuffer
+ *
+ * User framebuffers are backed by GEM objects so all we have to do is
+ * clean up a bit and drop the reference, GEM will handle the fallout
+ */
+static void psb_user_framebuffer_destroy(struct drm_framebuffer *fb)
+{
+ struct psb_framebuffer *psbfb = to_psb_fb(fb);
+ struct gtt_range *r = psbfb->gtt;
+ struct drm_device *dev = fb->dev;
+ struct drm_psb_private *dev_priv = dev->dev_private;
+ struct psb_fbdev *fbdev = dev_priv->fbdev;
+ struct drm_crtc *crtc;
+ int reset = 0;
+
+ /* Should never get stolen memory for a user fb */
+ WARN_ON(r->stolen);
+
+ /* Check if we are erroneously live */
+ list_for_each_entry(crtc, &dev->mode_config.crtc_list, head)
+ if (crtc->fb == fb)
+ reset = 1;
+
+ if (reset)
+ /*
+ * Now force a sane response before we permit the DRM CRTC
+ * layer to do stupid things like blank the display. Instead
+ * we reset this framebuffer as if the user had forced a reset.
+ * We must do this before the cleanup so that the DRM layer
+ * doesn't get a chance to stick its oar in where it isn't
+ * wanted.
+ */
+ drm_fb_helper_restore_fbdev_mode(&fbdev->psb_fb_helper);
+
+ /* Let DRM do its clean up */
+ drm_framebuffer_cleanup(fb);
+ /* We are no longer using the resource in GEM */
+ drm_gem_object_unreference_unlocked(&r->gem);
+ kfree(fb);
+}
+
+static const struct drm_mode_config_funcs psb_mode_funcs = {
+ .fb_create = psb_user_framebuffer_create,
+ .output_poll_changed = psbfb_output_poll_changed,
+};
+
+static int psb_create_backlight_property(struct drm_device *dev)
+{
+ struct drm_psb_private *dev_priv = dev->dev_private;
+ struct drm_property *backlight;
+
+ if (dev_priv->backlight_property)
+ return 0;
+
+ backlight = drm_property_create(dev, DRM_MODE_PROP_RANGE,
+ "backlight", 2);
+ backlight->values[0] = 0;
+ backlight->values[1] = 100;
+
+ dev_priv->backlight_property = backlight;
+
+ return 0;
+}
+
+static void psb_setup_outputs(struct drm_device *dev)
+{
+ struct drm_psb_private *dev_priv = dev->dev_private;
+ struct drm_connector *connector;
+
+ drm_mode_create_scaling_mode_property(dev);
+ psb_create_backlight_property(dev);
+
+ dev_priv->ops->output_init(dev);
+
+ list_for_each_entry(connector, &dev->mode_config.connector_list,
+ head) {
+ struct psb_intel_output *psb_intel_output =
+ to_psb_intel_output(connector);
+ struct drm_encoder *encoder = &psb_intel_output->enc;
+ int crtc_mask = 0, clone_mask = 0;
+
+ /* valid crtcs */
+ switch (psb_intel_output->type) {
+ case INTEL_OUTPUT_ANALOG:
+ crtc_mask = (1 << 0);
+ clone_mask = (1 << INTEL_OUTPUT_ANALOG);
+ break;
+ case INTEL_OUTPUT_SDVO:
+ crtc_mask = ((1 << 0) | (1 << 1));
+ clone_mask = (1 << INTEL_OUTPUT_SDVO);
+ break;
+ case INTEL_OUTPUT_LVDS:
+ if (IS_MRST(dev))
+ crtc_mask = (1 << 0);
+ else
+ crtc_mask = (1 << 1);
+ clone_mask = (1 << INTEL_OUTPUT_LVDS);
+ break;
+ case INTEL_OUTPUT_MIPI:
+ crtc_mask = (1 << 0);
+ clone_mask = (1 << INTEL_OUTPUT_MIPI);
+ break;
+ case INTEL_OUTPUT_MIPI2:
+ crtc_mask = (1 << 2);
+ clone_mask = (1 << INTEL_OUTPUT_MIPI2);
+ break;
+ case INTEL_OUTPUT_HDMI:
+ if (IS_MFLD(dev))
+ crtc_mask = (1 << 1);
+ else
+ crtc_mask = (1 << 0);
+ clone_mask = (1 << INTEL_OUTPUT_HDMI);
+ break;
+ }
+ encoder->possible_crtcs = crtc_mask;
+ encoder->possible_clones =
+ psb_intel_connector_clones(dev, clone_mask);
+ }
+}
+
+void psb_modeset_init(struct drm_device *dev)
+{
+ struct drm_psb_private *dev_priv = dev->dev_private;
+ struct psb_intel_mode_device *mode_dev = &dev_priv->mode_dev;
+ int i;
+
+ drm_mode_config_init(dev);
+
+ dev->mode_config.min_width = 0;
+ dev->mode_config.min_height = 0;
+
+ dev->mode_config.funcs = (void *) &psb_mode_funcs;
+
+ /* set memory base */
+ /* MRST and PSB should use BAR 2*/
+ pci_read_config_dword(dev->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 = 2048;
+ dev->mode_config.max_height = 2048;
+
+ psb_setup_outputs(dev);
+}
+
+void psb_modeset_cleanup(struct drm_device *dev)
+{
+ mutex_lock(&dev->struct_mutex);
+
+ drm_kms_helper_poll_fini(dev);
+ psb_fbdev_fini(dev);
+ drm_mode_config_cleanup(dev);
+
+ mutex_unlock(&dev->struct_mutex);
+}
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