svn commit: r282335 - head/usr.sbin/bhyve

[Neel Natu]

Author: neel
Date: Sat May  2 03:25:24 2015
New Revision: 282335
URL: https://svnweb.freebsd.org/changeset/base/282335

Log:
  Advertise an additional memory BAR in the "dummy" device emulation.
  
  This is useful for testing the MOVS emulation when both the source and
  destination addresses are in the MMIO space.
  
  MFC after:	1 week

Modified:
  head/usr.sbin/bhyve/pci_emul.c

Modified: head/usr.sbin/bhyve/pci_emul.c
==============================================================================
--- head/usr.sbin/bhyve/pci_emul.c	Sat May  2 03:01:03 2015	(r282334)
+++ head/usr.sbin/bhyve/pci_emul.c	Sat May  2 03:25:24 2015	(r282335)
@@ -1938,7 +1938,7 @@ INOUT_PORT(pci_cfgdata, CONF1_DATA_PORT+
 #define DMEMSZ	4096
 struct pci_emul_dsoftc {
 	uint8_t   ioregs[DIOSZ];
-	uint8_t	  memregs[DMEMSZ];
+	uint8_t	  memregs[2][DMEMSZ];
 };
 
 #define	PCI_EMUL_MSI_MSGS	 4
@@ -1967,6 +1967,9 @@ pci_emul_dinit(struct vmctx *ctx, struct
 	error = pci_emul_alloc_bar(pi, 1, PCIBAR_MEM32, DMEMSZ);
 	assert(error == 0);
 
+	error = pci_emul_alloc_bar(pi, 2, PCIBAR_MEM32, DMEMSZ);
+	assert(error == 0);
+
 	return (0);
 }
 
@@ -2006,21 +2009,23 @@ pci_emul_diow(struct vmctx *ctx, int vcp
 		}
 	}
 
-	if (baridx == 1) {
+	if (baridx == 1 || baridx == 2) {
 		if (offset + size > DMEMSZ) {
 			printf("diow: memw too large, offset %ld size %d\n",
 			       offset, size);
 			return;
 		}
 
+		i = baridx - 1;		/* 'memregs' index */
+
 		if (size == 1) {
-			sc->memregs[offset] = value;
+			sc->memregs[i][offset] = value;
 		} else if (size == 2) {
-			*(uint16_t *)&sc->memregs[offset] = value;
+			*(uint16_t *)&sc->memregs[i][offset] = value;
 		} else if (size == 4) {
-			*(uint32_t *)&sc->memregs[offset] = value;
+			*(uint32_t *)&sc->memregs[i][offset] = value;
 		} else if (size == 8) {
-			*(uint64_t *)&sc->memregs[offset] = value;
+			*(uint64_t *)&sc->memregs[i][offset] = value;
 		} else {
 			printf("diow: memw unknown size %d\n", size);
 		}
@@ -2030,7 +2035,7 @@ pci_emul_diow(struct vmctx *ctx, int vcp
 		 */
 	}
 
-	if (baridx > 1) {
+	if (baridx > 2) {
 		printf("diow: unknown bar idx %d\n", baridx);
 	}
 }
@@ -2041,6 +2046,7 @@ pci_emul_dior(struct vmctx *ctx, int vcp
 {
 	struct pci_emul_dsoftc *sc = pi->pi_arg;
 	uint32_t value;
+	int i;
 
 	if (baridx == 0) {
 		if (offset + size > DIOSZ) {
@@ -2059,29 +2065,31 @@ pci_emul_dior(struct vmctx *ctx, int vcp
 			printf("dior: ior unknown size %d\n", size);
 		}
 	}
-	
-	if (baridx == 1) {
+
+	if (baridx == 1 || baridx == 2) {
 		if (offset + size > DMEMSZ) {
 			printf("dior: memr too large, offset %ld size %d\n",
 			       offset, size);
 			return (0);
 		}
-	
+		
+		i = baridx - 1;		/* 'memregs' index */
+
 		if (size == 1) {
-			value = sc->memregs[offset];
+			value = sc->memregs[i][offset];
 		} else if (size == 2) {
-			value = *(uint16_t *) &sc->memregs[offset];
+			value = *(uint16_t *) &sc->memregs[i][offset];
 		} else if (size == 4) {
-			value = *(uint32_t *) &sc->memregs[offset];
+			value = *(uint32_t *) &sc->memregs[i][offset];
 		} else if (size == 8) {
-			value = *(uint64_t *) &sc->memregs[offset];
+			value = *(uint64_t *) &sc->memregs[i][offset];
 		} else {
 			printf("dior: ior unknown size %d\n", size);
 		}
 	}
 
 
-	if (baridx > 1) {
+	if (baridx > 2) {
 		printf("dior: unknown bar idx %d\n", baridx);
 		return (0);
 	}