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Merge branch 'x86-pci-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip

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* 'x86-pci-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  x86: Enable NMI on all cpus on UV
  vgaarb: Add user selectability of the number of GPUS in a system
  vgaarb: Fix VGA arbiter to accept PCI domains other than 0
  x86, uv: Update UV arch to target Legacy VGA I/O correctly.
  pci: Update pci_set_vga_state() to call arch functions
This commit is contained in:
Linus Torvalds
2010-02-28 10:59:18 -08:00
parent f6a0b5cd34 78c0617646
commit c7e15899d0
11 changed files with 160 additions and 7 deletions
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25
drivers/gpu/vga/vgaarb.c
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@ -688,7 +688,7 @@ EXPORT_SYMBOL(vga_client_register);
* the arbiter.
*/
#define MAX_USER_CARDS 16
#define MAX_USER_CARDS CONFIG_VGA_ARB_MAX_GPUS
#define PCI_INVALID_CARD ((struct pci_dev *)-1UL)
/*
@ -954,6 +954,7 @@ static ssize_t vga_arb_write(struct file *file, const char __user * buf,
}
} else if (strncmp(curr_pos, "target ", 7) == 0) {
struct pci_bus *pbus;
unsigned int domain, bus, devfn;
struct vga_device *vgadev;
@ -969,18 +970,31 @@ static ssize_t vga_arb_write(struct file *file, const char __user * buf,
ret_val = -EPROTO;
goto done;
}
pr_devel("vgaarb: %s ==> %x:%x:%x.%x\n", curr_pos,
domain, bus, PCI_SLOT(devfn), PCI_FUNC(devfn));
pdev = pci_get_bus_and_slot(bus, devfn);
pbus = pci_find_bus(domain, bus);
pr_devel("vgaarb: pbus %p\n", pbus);
if (pbus == NULL) {
pr_err("vgaarb: invalid PCI domain and/or bus address %x:%x\n",
domain, bus);
ret_val = -ENODEV;
goto done;
}
pdev = pci_get_slot(pbus, devfn);
pr_devel("vgaarb: pdev %p\n", pdev);
if (!pdev) {
pr_info("vgaarb: invalid PCI address!\n");
pr_err("vgaarb: invalid PCI address %x:%x\n",
bus, devfn);
ret_val = -ENODEV;
goto done;
}
}
vgadev = vgadev_find(pdev);
pr_devel("vgaarb: vgadev %p\n", vgadev);
if (vgadev == NULL) {
pr_info("vgaarb: this pci device is not a vga device\n");
pr_err("vgaarb: this pci device is not a vga device\n");
pci_dev_put(pdev);
ret_val = -ENODEV;
goto done;
@ -998,7 +1012,8 @@ static ssize_t vga_arb_write(struct file *file, const char __user * buf,
}
}
if (i == MAX_USER_CARDS) {
pr_err("vgaarb: maximum user cards number reached!\n");
pr_err("vgaarb: maximum user cards (%d) number reached!\n",
MAX_USER_CARDS);
pci_dev_put(pdev);
/* XXX: which value to return? */
ret_val = -ENOMEM;