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msix: drop unused msix_bar_size, require valid bar_size

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No user in sight for msix_bar_size.
bar_size for all users is aligned, let's simply
require this instead of trying to fix up invalid input.

Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
This commit is contained in:
Jan Kiszka 2012-06-04 16:56:01 +02:00 • committed by Michael S. Tsirkin
parent 80aa796bf3
commit 393a98924e
3 changed files with 3 additions and 21 deletions
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20
hw/msix.c
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@ -55,24 +55,17 @@ static int msix_add_config(struct PCIDevice *pdev, unsigned short nentries,
{
int config_offset;
uint8_t *config;
uint32_t new_size;
if (nentries < 1 || nentries > PCI_MSIX_FLAGS_QSIZE + 1)
return -EINVAL;
if (bar_size > 0x80000000)
return -ENOSPC;
/* Add space for MSI-X structures */
if (!bar_size) {
new_size = MSIX_PAGE_SIZE;
} else if (bar_size < MSIX_PAGE_SIZE) {
bar_size = MSIX_PAGE_SIZE;
new_size = MSIX_PAGE_SIZE * 2;
} else {
new_size = bar_size * 2;
/* Require aligned offset for MSI-X structures */
if (bar_size & ~(MSIX_PAGE_SIZE - 1)) {
return -EINVAL;
}
pdev->msix_bar_size = new_size;
config_offset = pci_add_capability(pdev, PCI_CAP_ID_MSIX,
0, MSIX_CAP_LENGTH);
if (config_offset < 0)
@ -382,13 +375,6 @@ int msix_enabled(PCIDevice *dev)
MSIX_ENABLE_MASK);
}
/* Size of bar where MSI-X table resides, or 0 if MSI-X not supported. */
uint32_t msix_bar_size(PCIDevice *dev)
{
return (dev->cap_present & QEMU_PCI_CAP_MSIX) ?
dev->msix_bar_size : 0;
}
/* Send an MSI-X message */
void msix_notify(PCIDevice *dev, unsigned vector)
{