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| author | Tim Deegan <Tim.Deegan@xensource.com> | 2007-03-29 16:27:52 +0000 |
|---|---|---|
| committer | Tim Deegan <Tim.Deegan@xensource.com> | 2007-03-29 16:27:52 +0000 |
| commit | 9dd742c907128440da976caa696ff300f2adaa28 (patch) | |
| tree | 925912a5b245dd7dc77d1e43400ad1e0d9881b7f /unmodified_drivers | |
| parent | 56ada11259ad745d39fdab4ded0403ba13fc0688 (diff) | |
| download | xen-9dd742c907128440da976caa696ff300f2adaa28.tar.gz xen-9dd742c907128440da976caa696ff300f2adaa28.tar.bz2 xen-9dd742c907128440da976caa696ff300f2adaa28.zip | |
[HVM] Save/restore: PV-on-HVM driver save/restore support
Signed-off-by: Zhai Edwin <edwin.zhai@intel.com>
Diffstat (limited to 'unmodified_drivers')
| -rw-r--r-- | unmodified_drivers/linux-2.6/platform-pci/platform-pci.c | 35 |
1 files changed, 33 insertions, 2 deletions
diff --git a/unmodified_drivers/linux-2.6/platform-pci/platform-pci.c b/unmodified_drivers/linux-2.6/platform-pci/platform-pci.c index bb7120b028..c9f6d73109 100644 --- a/unmodified_drivers/linux-2.6/platform-pci/platform-pci.c +++ b/unmodified_drivers/linux-2.6/platform-pci/platform-pci.c @@ -36,6 +36,7 @@ #include <asm/pgtable.h> #include <xen/interface/memory.h> #include <xen/features.h> +#include <xen/gnttab.h> #ifdef __ia64__ #include <asm/xen/xencomm.h> #endif @@ -61,9 +62,11 @@ MODULE_LICENSE("GPL"); unsigned long *phys_to_machine_mapping; EXPORT_SYMBOL(phys_to_machine_mapping); +static unsigned long shared_info_frame; +static uint64_t callback_via; + static int __devinit init_xen_info(void) { - unsigned long shared_info_frame; struct xen_add_to_physmap xatp; extern void *shared_info_area; @@ -219,7 +222,6 @@ static int __devinit platform_pci_init(struct pci_dev *pdev, int i, ret; long ioaddr, iolen; long mmio_addr, mmio_len; - uint64_t callback_via; i = pci_enable_device(pdev); if (i) @@ -303,6 +305,35 @@ static struct pci_driver platform_driver = { static int pci_device_registered; +void platform_pci_suspend(void) +{ + gnttab_suspend(); +} +EXPORT_SYMBOL_GPL(platform_pci_suspend); + +void platform_pci_resume(void) +{ + struct xen_add_to_physmap xatp; + phys_to_machine_mapping = NULL; + + /* do 2 things for PV driver restore on HVM + * 1: rebuild share info + * 2: set callback irq again + */ + xatp.domid = DOMID_SELF; + xatp.idx = 0; + xatp.space = XENMAPSPACE_shared_info; + xatp.gpfn = shared_info_frame; + if (HYPERVISOR_memory_op(XENMEM_add_to_physmap, &xatp)) + BUG(); + + if (( set_callback_via(callback_via))) + printk("platform_pci_resume failure!\n"); + + gnttab_resume(); +} +EXPORT_SYMBOL_GPL(platform_pci_resume); + static int __init platform_pci_module_init(void) { int rc; |