Differential D26209 Diff 121798 usr.sbin/bhyve/pci_gvt-d.c

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usr.sbin/bhyve/pci_gvt-d.c

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#define PCIR_BDSM 0x5C /* Base of Data Stolen Memory register */		#define PCIR_BDSM 0x5C /* Base of Data Stolen Memory register */
#define PCIR_ASLS_CTL 0xFC /* Opregion start address register */		#define PCIR_ASLS_CTL 0xFC /* Opregion start address register */

/* GVT-d definitions */		/* GVT-d definitions */
#define GVT_D_MAP_GSM 0		#define GVT_D_MAP_GSM 0
#define GVT_D_MAP_OPREGION 1		#define GVT_D_MAP_OPREGION 1

		static int
		gvt_d_aslswrite(struct passthru_softc sc, struct pci_devinst pi, int coff,
		int bytes, uint32_t val)
		{
		struct passthru_mmio_mapping *opregion;

		opregion = passthru_get_mmio(sc, GVT_D_MAP_OPREGION);
		if (opregion == NULL) {
		warnx("%s: Unable access opregion", __func__);
		return (0);
		}

		/* write new value to cfg space */
		if (bytes == 1) {
		pci_set_cfgdata8(pi, coff, val);
		} else if (bytes == 2) {
		pci_set_cfgdata16(pi, coff, val);
		} else {
		pci_set_cfgdata32(pi, coff, val);
		}

		/* get new address of opregion */
		opregion->gpa = pci_get_cfgdata32(pi, PCIR_ASLS_CTL);

		/* copy opregion into guest mem */
		opregion->gva = vm_map_gpa(pi->pi_vmctx, opregion->gpa, opregion->len);
		if (opregion->gva == 0) {
		warnx("%s: Unable to map opregion (0x%016lx)", __func__,
		opregion->gpa);
		/* return 0 to avoid emulation of ASLS register */
		return (0);
		}
		memcpy(opregion->gva, opregion->hva, opregion->len);

		return (0);
		}

static vm_paddr_t		static vm_paddr_t
gvt_d_alloc_mmio_memory(const vm_paddr_t host_address, const vm_paddr_t length,		gvt_d_alloc_mmio_memory(const vm_paddr_t host_address, const vm_paddr_t length,
const vm_paddr_t alignment, const enum e820_memory_type type)		const vm_paddr_t alignment, const enum e820_memory_type type)
{		{
vm_paddr_t address;		vm_paddr_t address;

/* try to use host address */		/* try to use host address */
address = e820_alloc(host_address, length, E820_ALIGNMENT_NONE, type,		address = e820_alloc(host_address, length, E820_ALIGNMENT_NONE, type,
▲ Show 20 Lines • Show All 95 Lines • ▼ Show 20 Lines	if (opregion->gpa != opregion->hpa) {
* change in the future.		* change in the future.
*/		*/
warnx(		warnx(
"Warning: Unable to reuse host address of OpRegion. GPU passthrough might not work properly.");		"Warning: Unable to reuse host address of OpRegion. GPU passthrough might not work properly.");
}		}

memcpy(opregion->gva, opregion->hva, opregion->len);		memcpy(opregion->gva, opregion->hva, opregion->len);

return (0);		pci_set_cfgdata32(pi, PCIR_ASLS_CTL, opregion->gpa);

		return (set_pcir_handler(sc, PCIR_ASLS_CTL, 4, passthru_cfgread_emulate,
		gvt_d_aslswrite));
}		}

int		int
gvt_d_init(struct pci_devinst const pi, nvlist_t const nvl __unused)		gvt_d_init(struct pci_devinst const pi, nvlist_t const nvl __unused)
{		{
int error;		int error;

if ((error = gvt_d_setup_gsm(pi)) != 0) {		if ((error = gvt_d_setup_gsm(pi)) != 0) {
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