Messages in this thread Patch in this message | | | Date | Thu, 04 Sep 2008 13:56:39 -0700 | From | Stephen Hemminger <> | Subject | [PATCH 3/3] PCI: add interface to set visible size of VPD |
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The VPD on all devices may not be 32K. Unfortunately, there is no generic way to find the size, so this adds a simple API hook to reset it.
Signed-off-by: Stephen Hemminger <shemminger@vyatta.com>
--- a/drivers/pci/access.c 2008-09-04 11:29:22.000000000 -0700 +++ b/drivers/pci/access.c 2008-09-04 11:38:29.000000000 -0700 @@ -332,6 +332,24 @@ int pci_vpd_pci22_init(struct pci_dev *d } /** + * pci_vpd_size - Set available Vital Product Data size + * @dev: pci device struct + * @size: available memory in bytes + * + * Adjust size of available VPD area. + */ +int pci_vpd_size(struct pci_dev *dev, size_t size) +{ + if (!dev->vpd) + return -EINVAL; + if (size > PCI_VPD_PCI22_SIZE) + return -EINVAL; + dev->vpd->len = size; + return 0; +} +EXPORT_SYMBOL(pci_vpd_size); + +/** * pci_block_user_cfg_access - Block userspace PCI config reads/writes * @dev: pci device struct * --- a/include/linux/pci.h 2008-09-04 11:28:45.000000000 -0700 +++ b/include/linux/pci.h 2008-09-04 11:29:15.000000000 -0700 @@ -653,6 +653,7 @@ int pci_bus_find_capability(struct pci_b /* Vital product data routines */ int pci_read_vpd(struct pci_dev *dev, loff_t pos, size_t count, void *buf); int pci_write_vpd(struct pci_dev *dev, loff_t pos, size_t count, const void *buf); +int pci_vpd_size(struct pci_dev *dev, size_t size); /* Helper functions for low-level code (drivers/pci/setup-[bus,res].c) */ void pci_bus_assign_resources(struct pci_bus *bus); --
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