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835c34a168
Since the x86 merge, lots of files that referenced their own filenames are no longer correct. Rather than keep them up to date, just delete them, as they add no real value. Additionally: - fix up comment formatting in scx200_32.c - Remove a credit from myself in setup_64.c from a time when we had no SCM - remove longwinded history from tsc_32.c which can be figured out from git. Signed-off-by: Dave Jones <davej@redhat.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
73 lines
1.8 KiB
C
73 lines
1.8 KiB
C
/*
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* This is a good place to put board specific reboot fixups.
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*
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* List of supported fixups:
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* geode-gx1/cs5530a - Jaya Kumar <jayalk@intworks.biz>
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* geode-gx/lx/cs5536 - Andres Salomon <dilinger@debian.org>
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*
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*/
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#include <asm/delay.h>
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#include <linux/pci.h>
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#include <linux/interrupt.h>
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#include <asm/reboot_fixups.h>
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#include <asm/msr.h>
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static void cs5530a_warm_reset(struct pci_dev *dev)
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{
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/* writing 1 to the reset control register, 0x44 causes the
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cs5530a to perform a system warm reset */
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pci_write_config_byte(dev, 0x44, 0x1);
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udelay(50); /* shouldn't get here but be safe and spin-a-while */
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return;
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}
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static void cs5536_warm_reset(struct pci_dev *dev)
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{
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/*
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* 6.6.2.12 Soft Reset (DIVIL_SOFT_RESET)
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* writing 1 to the LSB of this MSR causes a hard reset.
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*/
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wrmsrl(0x51400017, 1ULL);
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udelay(50); /* shouldn't get here but be safe and spin a while */
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}
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struct device_fixup {
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unsigned int vendor;
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unsigned int device;
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void (*reboot_fixup)(struct pci_dev *);
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};
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static struct device_fixup fixups_table[] = {
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{ PCI_VENDOR_ID_CYRIX, PCI_DEVICE_ID_CYRIX_5530_LEGACY, cs5530a_warm_reset },
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{ PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_CS5536_ISA, cs5536_warm_reset },
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};
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/*
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* we see if any fixup is available for our current hardware. if there
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* is a fixup, we call it and we expect to never return from it. if we
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* do return, we keep looking and then eventually fall back to the
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* standard mach_reboot on return.
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*/
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void mach_reboot_fixups(void)
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{
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struct device_fixup *cur;
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struct pci_dev *dev;
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int i;
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/* we can be called from sysrq-B code. In such a case it is
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* prohibited to dig PCI */
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if (in_interrupt())
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return;
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for (i=0; i < ARRAY_SIZE(fixups_table); i++) {
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cur = &(fixups_table[i]);
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dev = pci_get_device(cur->vendor, cur->device, NULL);
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if (!dev)
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continue;
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cur->reboot_fixup(dev);
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}
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}
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