ps3fb.c

linux 内核源代码

			ps3fb_sync(info, 0);	/* single buffer */
			release_console_sem();
		}
		schedule();
	}
	return 0;
}

static irqreturn_t ps3fb_vsync_interrupt(int irq, void *ptr)
{
	struct device *dev = ptr;
	u64 v1;
	int status;
	struct display_head *head = &ps3fb.dinfo->display_head[1];

	status = lv1_gpu_context_intr(ps3fb.context_handle, &v1);
	if (status) {
		dev_err(dev, "%s: lv1_gpu_context_intr failed: %d\n", __func__,
			status);
		return IRQ_NONE;
	}

	if (v1 & (1 << GPU_INTR_STATUS_VSYNC_1)) {
		/* VSYNC */
		ps3fb.vblank_count = head->vblank_count;
		if (ps3fb.task && !ps3fb.is_blanked &&
		    !atomic_read(&ps3fb.ext_flip)) {
			ps3fb.is_kicked = 1;
			wake_up_process(ps3fb.task);
		}
		wake_up_interruptible(&ps3fb.wait_vsync);
	}

	return IRQ_HANDLED;
}


static int ps3fb_vsync_settings(struct gpu_driver_info *dinfo,
				struct device *dev)
{
	int error;

	dev_dbg(dev, "version_driver:%x\n", dinfo->version_driver);
	dev_dbg(dev, "irq outlet:%x\n", dinfo->irq.irq_outlet);
	dev_dbg(dev,
		"version_gpu: %x memory_size: %x ch: %x core_freq: %d "
		"mem_freq:%d\n",
		dinfo->version_gpu, dinfo->memory_size, dinfo->hardware_channel,
		dinfo->nvcore_frequency/1000000, dinfo->memory_frequency/1000000);

	if (dinfo->version_driver != GPU_DRIVER_INFO_VERSION) {
		dev_err(dev, "%s: version_driver err:%x\n", __func__,
			dinfo->version_driver);
		return -EINVAL;
	}

	error = ps3_irq_plug_setup(PS3_BINDING_CPU_ANY, dinfo->irq.irq_outlet,
				   &ps3fb.irq_no);
	if (error) {
		dev_err(dev, "%s: ps3_alloc_irq failed %d\n", __func__, error);
		return error;
	}

	error = request_irq(ps3fb.irq_no, ps3fb_vsync_interrupt, IRQF_DISABLED,
			    DEVICE_NAME, dev);
	if (error) {
		dev_err(dev, "%s: request_irq failed %d\n", __func__, error);
		ps3_irq_plug_destroy(ps3fb.irq_no);
		return error;
	}

	dinfo->irq.mask = (1 << GPU_INTR_STATUS_VSYNC_1) |
			  (1 << GPU_INTR_STATUS_FLIP_1);
	return 0;
}

static int ps3fb_xdr_settings(u64 xdr_lpar, struct device *dev)
{
	int status;

	status = lv1_gpu_context_iomap(ps3fb.context_handle, GPU_IOIF,
				       xdr_lpar, ps3fb_videomemory.size, 0);
	if (status) {
		dev_err(dev, "%s: lv1_gpu_context_iomap failed: %d\n",
			__func__, status);
		return -ENXIO;
	}
	dev_dbg(dev,
		"video:%p xdr_ea:%p ioif:%lx lpar:%lx phys:%lx size:%lx\n",
		ps3fb_videomemory.address, ps3fb.xdr_ea, GPU_IOIF, xdr_lpar,
		virt_to_abs(ps3fb.xdr_ea), ps3fb_videomemory.size);

	status = lv1_gpu_context_attribute(ps3fb.context_handle,
					   L1GPU_CONTEXT_ATTRIBUTE_FB_SETUP,
					   xdr_lpar, GPU_CMD_BUF_SIZE,
					   GPU_IOIF, 0);
	if (status) {
		dev_err(dev,
			"%s: lv1_gpu_context_attribute FB_SETUP failed: %d\n",
			__func__, status);
		return -ENXIO;
	}
	return 0;
}

static struct fb_ops ps3fb_ops = {
	.fb_open	= ps3fb_open,
	.fb_release	= ps3fb_release,
	.fb_read        = fb_sys_read,
	.fb_write       = fb_sys_write,
	.fb_check_var	= ps3fb_check_var,
	.fb_set_par	= ps3fb_set_par,
	.fb_setcolreg	= ps3fb_setcolreg,
	.fb_pan_display	= ps3fb_pan_display,
	.fb_fillrect	= sys_fillrect,
	.fb_copyarea	= sys_copyarea,
	.fb_imageblit	= sys_imageblit,
	.fb_mmap	= ps3fb_mmap,
	.fb_blank	= ps3fb_blank,
	.fb_ioctl	= ps3fb_ioctl,
	.fb_compat_ioctl = ps3fb_ioctl
};

static struct fb_fix_screeninfo ps3fb_fix __initdata = {
	.id =		DEVICE_NAME,
	.type =		FB_TYPE_PACKED_PIXELS,
	.visual =	FB_VISUAL_TRUECOLOR,
	.accel =	FB_ACCEL_NONE,
};

static int ps3fb_set_sync(struct device *dev)
{
	int status;

#ifdef HEAD_A
	status = lv1_gpu_context_attribute(0x0,
					   L1GPU_CONTEXT_ATTRIBUTE_DISPLAY_SYNC,
					   0, L1GPU_DISPLAY_SYNC_VSYNC, 0, 0);
	if (status) {
		dev_err(dev,
			"%s: lv1_gpu_context_attribute DISPLAY_SYNC failed: "
			"%d\n",
			__func__, status);
		return -1;
	}
#endif
#ifdef HEAD_B
	status = lv1_gpu_context_attribute(0x0,
					   L1GPU_CONTEXT_ATTRIBUTE_DISPLAY_SYNC,
					   1, L1GPU_DISPLAY_SYNC_VSYNC, 0, 0);

	if (status) {
		dev_err(dev,
			"%s: lv1_gpu_context_attribute DISPLAY_SYNC failed: "
			"%d\n",
			__func__, status);
		return -1;
	}
#endif
	return 0;
}

static int __devinit ps3fb_probe(struct ps3_system_bus_device *dev)
{
	struct fb_info *info;
	struct ps3fb_par *par;
	int retval = -ENOMEM;
	u32 xres, yres;
	u64 ddr_lpar = 0;
	u64 lpar_dma_control = 0;
	u64 lpar_driver_info = 0;
	u64 lpar_reports = 0;
	u64 lpar_reports_size = 0;
	u64 xdr_lpar;
	int status, res_index;
	struct task_struct *task;
	unsigned long max_ps3fb_size;

	if (ps3fb_videomemory.size < GPU_CMD_BUF_SIZE) {
		dev_err(&dev->core, "%s: Not enough video memory\n", __func__);
		return -ENOMEM;
	}

	status = ps3_open_hv_device(dev);
	if (status) {
		dev_err(&dev->core, "%s: ps3_open_hv_device failed\n",
			__func__);
		goto err;
	}

	if (!ps3fb_mode)
		ps3fb_mode = ps3av_get_mode();
	dev_dbg(&dev->core, "ps3av_mode:%d\n", ps3fb_mode);

	if (ps3fb_mode > 0 &&
	    !ps3av_video_mode2res(ps3fb_mode, &xres, &yres)) {
		res_index = ps3fb_get_res_table(xres, yres, ps3fb_mode);
		dev_dbg(&dev->core, "res_index:%d\n", res_index);
	} else
		res_index = GPU_RES_INDEX;

	atomic_set(&ps3fb.f_count, -1);	/* fbcon opens ps3fb */
	atomic_set(&ps3fb.ext_flip, 0);	/* for flip with vsync */
	init_waitqueue_head(&ps3fb.wait_vsync);

	ps3fb_set_sync(&dev->core);

	max_ps3fb_size = _ALIGN_UP(GPU_IOIF, 256*1024*1024) - GPU_IOIF;
	if (ps3fb_videomemory.size > max_ps3fb_size) {
		dev_info(&dev->core, "Limiting ps3fb mem size to %lu bytes\n",
			 max_ps3fb_size);
		ps3fb_videomemory.size = max_ps3fb_size;
	}

	/* get gpu context handle */
	status = lv1_gpu_memory_allocate(ps3fb_videomemory.size, 0, 0, 0, 0,
					 &ps3fb.memory_handle, &ddr_lpar);
	if (status) {
		dev_err(&dev->core, "%s: lv1_gpu_memory_allocate failed: %d\n",
			__func__, status);
		goto err;
	}
	dev_dbg(&dev->core, "ddr:lpar:0x%lx\n", ddr_lpar);

	status = lv1_gpu_context_allocate(ps3fb.memory_handle, 0,
					  &ps3fb.context_handle,
					  &lpar_dma_control, &lpar_driver_info,
					  &lpar_reports, &lpar_reports_size);
	if (status) {
		dev_err(&dev->core,
			"%s: lv1_gpu_context_attribute failed: %d\n", __func__,
			status);
		goto err_gpu_memory_free;
	}

	/* vsync interrupt */
	ps3fb.dinfo = ioremap(lpar_driver_info, 128 * 1024);
	if (!ps3fb.dinfo) {
		dev_err(&dev->core, "%s: ioremap failed\n", __func__);
		goto err_gpu_context_free;
	}

	retval = ps3fb_vsync_settings(ps3fb.dinfo, &dev->core);
	if (retval)
		goto err_iounmap_dinfo;

	/* XDR frame buffer */
	ps3fb.xdr_ea = ps3fb_videomemory.address;
	xdr_lpar = ps3_mm_phys_to_lpar(__pa(ps3fb.xdr_ea));

	/* Clear memory to prevent kernel info leakage into userspace */
	memset(ps3fb.xdr_ea, 0, ps3fb_videomemory.size);

	/*
	 * The GPU command buffer is at the start of video memory
	 * As we don't use the full command buffer, we can put the actual
	 * frame buffer at offset GPU_FB_START and save some precious XDR
	 * memory
	 */
	ps3fb.xdr_ea += GPU_FB_START;
	ps3fb.xdr_size = ps3fb_videomemory.size - GPU_FB_START;

	retval = ps3fb_xdr_settings(xdr_lpar, &dev->core);
	if (retval)
		goto err_free_irq;

	info = framebuffer_alloc(sizeof(struct ps3fb_par), &dev->core);
	if (!info)
		goto err_free_irq;

	par = info->par;
	par->mode_id = ~ps3fb_mode;	/* != ps3fb_mode, to trigger change */
	par->new_mode_id = ps3fb_mode;
	par->res_index = res_index;
	par->num_frames = 1;

	info->screen_base = (char __iomem *)ps3fb.xdr_ea;
	info->fbops = &ps3fb_ops;

	info->fix = ps3fb_fix;
	info->fix.smem_start = virt_to_abs(ps3fb.xdr_ea);
	info->fix.smem_len = ps3fb.xdr_size;
	info->pseudo_palette = par->pseudo_palette;
	info->flags = FBINFO_DEFAULT | FBINFO_READS_FAST |
		      FBINFO_HWACCEL_XPAN | FBINFO_HWACCEL_YPAN;

	retval = fb_alloc_cmap(&info->cmap, 256, 0);
	if (retval < 0)
		goto err_framebuffer_release;

	if (!fb_find_mode(&info->var, info, mode_option, ps3fb_modedb,
			  ARRAY_SIZE(ps3fb_modedb),
			  ps3fb_default_mode(par->new_mode_id), 32)) {
		retval = -EINVAL;
		goto err_fb_dealloc;
	}

	fb_videomode_to_modelist(ps3fb_modedb, ARRAY_SIZE(ps3fb_modedb),
				 &info->modelist);

	retval = register_framebuffer(info);
	if (retval < 0)
		goto err_fb_dealloc;

	dev->core.driver_data = info;

	dev_info(info->device, "%s %s, using %lu KiB of video memory\n",
		 dev_driver_string(info->dev), info->dev->bus_id,
		 ps3fb.xdr_size >> 10);

	task = kthread_run(ps3fbd, info, DEVICE_NAME);
	if (IS_ERR(task)) {
		retval = PTR_ERR(task);
		goto err_unregister_framebuffer;
	}

	ps3fb.task = task;
	ps3av_register_flip_ctl(ps3fb_flip_ctl, &ps3fb);

	return 0;

err_unregister_framebuffer:
	unregister_framebuffer(info);
err_fb_dealloc:
	fb_dealloc_cmap(&info->cmap);
err_framebuffer_release:
	framebuffer_release(info);
err_free_irq:
	free_irq(ps3fb.irq_no, &dev->core);
	ps3_irq_plug_destroy(ps3fb.irq_no);
err_iounmap_dinfo:
	iounmap((u8 __iomem *)ps3fb.dinfo);
err_gpu_context_free:
	lv1_gpu_context_free(ps3fb.context_handle);
err_gpu_memory_free:
	lv1_gpu_memory_free(ps3fb.memory_handle);
err:
	return retval;
}

static int ps3fb_shutdown(struct ps3_system_bus_device *dev)
{
	int status;
	struct fb_info *info = dev->core.driver_data;

	dev_dbg(&dev->core, " -> %s:%d\n", __func__, __LINE__);

	ps3fb_flip_ctl(0, &ps3fb);	/* flip off */
	ps3fb.dinfo->irq.mask = 0;

	ps3av_register_flip_ctl(NULL, NULL);
	if (ps3fb.task) {
		struct task_struct *task = ps3fb.task;
		ps3fb.task = NULL;
		kthread_stop(task);
	}
	if (ps3fb.irq_no) {
		free_irq(ps3fb.irq_no, &dev->core);
		ps3_irq_plug_destroy(ps3fb.irq_no);
	}
	if (info) {
		unregister_framebuffer(info);
		fb_dealloc_cmap(&info->cmap);
		framebuffer_release(info);
		info = dev->core.driver_data = NULL;
	}
	iounmap((u8 __iomem *)ps3fb.dinfo);

	status = lv1_gpu_context_free(ps3fb.context_handle);
	if (status)
		dev_dbg(&dev->core, "lv1_gpu_context_free failed: %d\n",
			status);

	status = lv1_gpu_memory_free(ps3fb.memory_handle);
	if (status)
		dev_dbg(&dev->core, "lv1_gpu_memory_free failed: %d\n",
			status);

	ps3_close_hv_device(dev);
	dev_dbg(&dev->core, " <- %s:%d\n", __func__, __LINE__);

	return 0;
}

static struct ps3_system_bus_driver ps3fb_driver = {
	.match_id	= PS3_MATCH_ID_GRAPHICS,
	.core.name	= DEVICE_NAME,
	.core.owner	= THIS_MODULE,
	.probe		= ps3fb_probe,
	.remove		= ps3fb_shutdown,
	.shutdown	= ps3fb_shutdown,
};

static int __init ps3fb_setup(void)
{
	char *options;

#ifdef MODULE
	return 0;
#endif

	if (fb_get_options(DEVICE_NAME, &options))
		return -ENXIO;

	if (!options || !*options)
		return 0;

	while (1) {
		char *this_opt = strsep(&options, ",");

		if (!this_opt)
			break;
		if (!*this_opt)
			continue;
		if (!strncmp(this_opt, "mode:", 5))
			ps3fb_mode = simple_strtoul(this_opt + 5, NULL, 0);
		else
			mode_option = this_opt;
	}
	return 0;
}

static int __init ps3fb_init(void)
{
	if (!ps3fb_videomemory.address ||  ps3fb_setup())
		return -ENXIO;

	return ps3_system_bus_driver_register(&ps3fb_driver);
}

static void __exit ps3fb_exit(void)
{
	pr_debug(" -> %s:%d\n", __func__, __LINE__);
	ps3_system_bus_driver_unregister(&ps3fb_driver);
	pr_debug(" <- %s:%d\n", __func__, __LINE__);
}

module_init(ps3fb_init);
module_exit(ps3fb_exit);

MODULE_LICENSE("GPL");
MODULE_DESCRIPTION("PS3 GPU Frame Buffer Driver");
MODULE_AUTHOR("Sony Computer Entertainment Inc.");
MODULE_ALIAS(PS3_MODULE_ALIAS_GRAPHICS);