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Show First 20 Lines • Show All 438 Lines • ▼ Show 20 Lines	init_msix_table(struct vmctx ctx, struct passthru_softc sc)
* 1. The PBA may reside in the first or last page containing the MSI-X		* 1. The PBA may reside in the first or last page containing the MSI-X
* table.		* table.
* 2. While PCI devices are not supposed to use the page(s) containing		* 2. While PCI devices are not supposed to use the page(s) containing
* the MSI-X table for other purposes, some do in practice.		* the MSI-X table for other purposes, some do in practice.
*/		*/
memset(&pbm, 0, sizeof(pbm));		memset(&pbm, 0, sizeof(pbm));
pbm.pbm_sel = sc->psc_sel;		pbm.pbm_sel = sc->psc_sel;
pbm.pbm_flags = PCIIO_BAR_MMAP_RW;		pbm.pbm_flags = PCIIO_BAR_MMAP_RW;
pbm.pbm_reg = PCIR_BAR(pi->pi_msix.pba_bar);		pbm.pbm_reg = PCIR_BAR(pi->pi_msix.table_bar);
pbm.pbm_memattr = VM_MEMATTR_DEVICE;		pbm.pbm_memattr = VM_MEMATTR_DEVICE;

if (ioctl(pcifd, PCIOCBARMMAP, &pbm) != 0) {		if (ioctl(pcifd, PCIOCBARMMAP, &pbm) != 0) {
warn("Failed to map MSI-X table BAR on %d/%d/%d", b, s, f);		warn("Failed to map MSI-X table BAR on %d/%d/%d", b, s, f);
return (-1);		return (-1);
}		}
assert(pbm.pbm_bar_off == 0);		assert(pbm.pbm_bar_off == 0);
pi->pi_msix.mapped_addr = (uint8_t *)(uintptr_t)pbm.pbm_map_base;		pi->pi_msix.mapped_addr = (uint8_t *)(uintptr_t)pbm.pbm_map_base;
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