/* sunxvr2500.c: Sun 3DLABS XVR-2500 et al. fb driver for sparc64 systems
 *
 * License: GPL
 *
 * Copyright (C) 2007 David S. Miller (davem@davemloft.net)
 */

#include <linux/kernel.h>
#include <linux/fb.h>
#include <linux/pci.h>
#include <linux/init.h>
#include <linux/of_device.h>

#include <asm/io.h>

struct s3d_info {
	struct fb_info		*info;
	struct pci_dev		*pdev;

	char __iomem		*fb_base;
	unsigned long		fb_base_phys;

	struct device_node	*of_node;

	unsigned int		width;
	unsigned int		height;
	unsigned int		depth;
	unsigned int		fb_size;

	u32			pseudo_palette[16];
};

static int s3d_get_props(struct s3d_info *sp)
{
	sp->width = of_getintprop_default(sp->of_node, "width", 0);
	sp->height = of_getintprop_default(sp->of_node, "height", 0);
	sp->depth = of_getintprop_default(sp->of_node, "depth", 8);

	if (!sp->width || !sp->height) {
		printk(KERN_ERR "s3d: Critical properties missing for %s\n",
		       pci_name(sp->pdev));
		return -EINVAL;
	}

	return 0;
}

static int s3d_setcolreg(unsigned regno,
			 unsigned red, unsigned green, unsigned blue,
			 unsigned transp, struct fb_info *info)
{
	u32 value;

	if (regno < 16) {
		red >>= 8;
		green >>= 8;
		blue >>= 8;

		value = (blue << 24) | (green << 16) | (red << 8);
		((u32 *)info->pseudo_palette)[regno] = value;
	}

	return 0;
}

static struct fb_ops s3d_ops = {
	.owner			= THIS_MODULE,
	.fb_setcolreg		= s3d_setcolreg,
	.fb_fillrect		= cfb_fillrect,
	.fb_copyarea		= cfb_copyarea,
	.fb_imageblit		= cfb_imageblit,
};

static int s3d_set_fbinfo(struct s3d_info *sp)
{
	struct fb_info *info = sp->info;
	struct fb_var_screeninfo *var = &info->var;

	info->flags = FBINFO_DEFAULT;
	info->fbops = &s3d_ops;
	info->screen_base = sp->fb_base;
	info->screen_size = sp->fb_size;

	info->pseudo_palette = sp->pseudo_palette;

	/* Fill fix common fields */
	strlcpy(info->fix.id, "s3d", sizeof(info->fix.id));
        info->fix.smem_start = sp->fb_base_phys;
        info->fix.smem_len = sp->fb_size;
        info->fix.type = FB_TYPE_PACKED_PIXELS;
	if (sp->depth == 32 || sp->depth == 24)
		info->fix.visual = FB_VISUAL_TRUECOLOR;
	else
		info->fix.visual = FB_VISUAL_PSEUDOCOLOR;

	var->xres = sp->width;
	var->yres = sp->height;
	var->xres_virtual = var->xres;
	var->yres_virtual = var->yres;
	var->bits_per_pixel = sp->depth;

	var->red.offset = 8;
	var->red.length = 8;
	var->green.offset = 16;
	var->green.length = 8;
	var->blue.offset = 24;
	var->blue.length = 8;
	var->transp.offset = 0;
	var->transp.length = 0;

	if (fb_alloc_cmap(&info->cmap, 256, 0)) {
		printk(KERN_ERR "s3d: Cannot allocate color map.\n");
		return -ENOMEM;
	}

        return 0;
}

static int s3d_pci_register(struct pci_dev *pdev,
			    const struct pci_device_id *ent)
{
	struct fb_info *info;
	struct s3d_info *sp;
	int err;

	err = pci_enable_device(pdev);
	if (err < 0) {
		printk(KERN_ERR "s3d: Cannot enable PCI device %s\n",
		       pci_name(pdev));
		goto err_out;
	}

	info = framebuffer_alloc(sizeof(struct s3d_info), &pdev->dev);
	if (!info) {
		printk(KERN_ERR "s3d: Cannot allocate fb_info\n");
		err = -ENOMEM;
		goto err_disable;
	}

	sp = info->par;
	sp->info = info;
	sp->pdev = pdev;
	sp->of_node = pci_device_to_OF_node(pdev);
	if (!sp->of_node) {
		printk(KERN_ERR "s3d: Cannot find OF node of %s\n",
		       pci_name(pdev));
		err = -ENODEV;
		goto err_release_fb;
	}

	sp->fb_base_phys = pci_resource_start (pdev, 1);

	err = pci_request_region(pdev, 1, "s3d framebuffer");
	if (err < 0) {
		printk("s3d: Cannot request region 1 for %s\n",
		       pci_name(pdev));
		goto err_release_fb;
	}

	err = s3d_get_props(sp);
	if (err)
		goto err_release_pci;

	/* XXX 'linebytes' is often wrong, it is equal to the width
	 * XXX with depth of 32 on my XVR-2500 which is clearly not
	 * XXX right.  So we don't try to use it.
	 */
	switch (sp->depth) {
	case 8:
		info->fix.line_length = sp->width;
		break;
	case 16:
		info->fix.line_length = sp->width * 2;
		break;
	case 24:
		info->fix.line_length = sp->width * 3;
		break;
	case 32:
		info->fix.line_length = sp->width * 4;
		break;
	}
	sp->fb_size = info->fix.line_length * sp->height;

	sp->fb_base = ioremap(sp->fb_base_phys, sp->fb_size);
	if (!sp->fb_base) {
		err = -ENOMEM;
		goto err_release_pci;
	}

	err = s3d_set_fbinfo(sp);
	if (err)
		goto err_unmap_fb;

	pci_set_drvdata(pdev, info);

	printk("s3d: Found device at %s\n", pci_name(pdev));

	err = register_framebuffer(info);
	if (err < 0) {
		printk(KERN_ERR "s3d: Could not register framebuffer %s\n",
		       pci_name(pdev));
		goto err_unmap_fb;
	}

	return 0;

err_unmap_fb:
	iounmap(sp->fb_base);

err_release_pci:
	pci_release_region(pdev, 1);

err_release_fb:
        framebuffer_release(info);

err_disable:
	pci_disable_device(pdev);

err_out:
	return err;
}

static struct pci_device_id s3d_pci_table[] = {
	{	PCI_DEVICE(PCI_VENDOR_ID_3DLABS, 0x002c),	},
	{	PCI_DEVICE(PCI_VENDOR_ID_3DLABS, 0x002d),	},
	{	PCI_DEVICE(PCI_VENDOR_ID_3DLABS, 0x002e),	},
	{	PCI_DEVICE(PCI_VENDOR_ID_3DLABS, 0x002f),	},
	{	PCI_DEVICE(PCI_VENDOR_ID_3DLABS, 0x0030),	},
	{	PCI_DEVICE(PCI_VENDOR_ID_3DLABS, 0x0031),	},
	{	PCI_DEVICE(PCI_VENDOR_ID_3DLABS, 0x0032),	},
	{	PCI_DEVICE(PCI_VENDOR_ID_3DLABS, 0x0033),	},
	{ 0, }
};

static struct pci_driver s3d_driver = {
	.driver = {
		.suppress_bind_attrs = true,
	},
	.name		= "s3d",
	.id_table	= s3d_pci_table,
	.probe		= s3d_pci_register,
};

static int __init s3d_init(void)
{
	if (fb_get_options("s3d", NULL))
		return -ENODEV;

	return pci_register_driver(&s3d_driver);
}
device_initcall(s3d_init);
b307339f269d3bf7db877d536f'>tools/perf/scripts/python</a></td></tr>
<tr><th>parent</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/tools/perf/scripts/python?id=5d0e7705774dd412a465896d08d59a81a345c1e4'>5d0e7705774dd412a465896d08d59a81a345c1e4</a> (<a href='/cgit.cgi/linux/net-next.git/diff/tools/perf/scripts/python?id=54791b276b4000b307339f269d3bf7db877d536f&amp;id2=5d0e7705774dd412a465896d08d59a81a345c1e4'>diff</a>)</td></tr><tr><th>parent</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/tools/perf/scripts/python?id=047487241ff59374fded8c477f21453681f5995c'>047487241ff59374fded8c477f21453681f5995c</a> (<a href='/cgit.cgi/linux/net-next.git/diff/tools/perf/scripts/python?id=54791b276b4000b307339f269d3bf7db877d536f&amp;id2=047487241ff59374fded8c477f21453681f5995c'>diff</a>)</td></tr></table>
<div class='commit-subject'>Merge branch 'sparc64-non-resumable-user-error-recovery'</div><div class='commit-msg'>Liam R. Howlett says:

====================
sparc64: Recover from userspace non-resumable PIO &amp; MEM errors

A non-resumable error from userspace is able to cause a kernel panic or trap
loop due to the setup and handling of the queued traps once in the kernel.
This patch series addresses both of these issues.

The queues are fixed by simply zeroing the memory before use.

PIO errors from userspace will result in a SIGBUS being sent to the user
process.

The MEM errors form userspace will result in a SIGKILL and also cause the
offending pages to be claimed so they are no longer used in future tasks.
SIGKILL is used to ensure that the process does not try to coredump and result
in an attempt to read the memory again from within kernel space.  Although
there is a HV call to scrub the memory (mem_scrub), there is no easy way to
guarantee that the real memory address(es) are not used by other tasks.
Clearing the error with mem_scrub would zero the memory and cause the other
processes to proceed with bad data.

The handling of other non-resumable errors remain unchanged and will cause a
panic.
====================

Signed-off-by: David S. Miller &lt;davem@davemloft.net&gt;
</div><div class='diffstat-header'><a href='/cgit.cgi/linux/net-next.git/diff/?id=54791b276b4000b307339f269d3bf7db877d536f'>Diffstat</a> (limited to 'tools/perf/scripts/python')</div><table summary='diffstat' class='diffstat'>