[kvm-unit-tests PATCH v3 6/6] pci: Make PCI API consistent wrt using struct pci_dev

[Alexander Gordeev <agordeev@redhat.com>]

Complete conversion of PCI API so all functions
that imply the underlying device does exist would
use struct pci_dev as a handle, not pcidevaddr_t.

Cc: Thomas Huth <thuth@redhat.com>
Cc: Andrew Jones <drjones@redhat.com>
Signed-off-by: Alexander Gordeev <agordeev@redhat.com>
---
 lib/pci-host-generic.c |  2 +-
 lib/pci.c              | 43 +++++++++++++++++++++++--------------------
 lib/pci.h              |  4 ++--
 x86/intel-iommu.c      |  2 +-
 4 files changed, 27 insertions(+), 24 deletions(-)

diff --git a/lib/pci-host-generic.c b/lib/pci-host-generic.c
index 8b505b444a34..818150dc0a66 100644
--- a/lib/pci-host-generic.c
+++ b/lib/pci-host-generic.c
@@ -192,7 +192,7 @@ static bool pci_alloc_resource(struct pci_dev *dev, int bar_num, u64 *addr)
 
 	if (i >= host->nr_addr_spaces) {
 		printf("%s: warning: can't satisfy request for ", __func__);
-		pci_dev_print_id(dev->bdf);
+		pci_dev_print_id(dev);
 		printf(" ");
 		pci_bar_print(dev, bar_num);
 		printf("\n");
diff --git a/lib/pci.c b/lib/pci.c
index d9e3dfaa3726..cf9dc3f2792f 100644
--- a/lib/pci.c
+++ b/lib/pci.c
@@ -266,11 +266,13 @@ void pci_bar_print(struct pci_dev *dev, int bar_num)
 	printf("]");
 }
 
-void pci_dev_print_id(pcidevaddr_t dev)
+void pci_dev_print_id(struct pci_dev *dev)
 {
-	printf("00.%02x.%1x %04x:%04x", dev / 8, dev % 8,
-		pci_config_readw(dev, PCI_VENDOR_ID),
-		pci_config_readw(dev, PCI_DEVICE_ID));
+	pcidevaddr_t bdf = dev->bdf;
+
+	printf("00.%02x.%1x %04x:%04x", bdf / 8, bdf % 8,
+		pci_config_readw(bdf, PCI_VENDOR_ID),
+		pci_config_readw(bdf, PCI_DEVICE_ID));
 }
 
 static void pci_cap_print(struct pci_dev *dev, int cap_offset, int cap_id)
@@ -288,44 +290,45 @@ static void pci_cap_print(struct pci_dev *dev, int cap_offset, int cap_id)
 	printf("at offset 0x%02x\n", cap_offset);
 }
 
-void pci_dev_print(pcidevaddr_t dev)
+void pci_dev_print(struct pci_dev *dev)
 {
-	uint8_t header = pci_config_readb(dev, PCI_HEADER_TYPE);
-	uint8_t progif = pci_config_readb(dev, PCI_CLASS_PROG);
-	uint8_t subclass = pci_config_readb(dev, PCI_CLASS_DEVICE);
-	uint8_t class = pci_config_readb(dev, PCI_CLASS_DEVICE + 1);
-	struct pci_dev pci_dev;
+	pcidevaddr_t bdf = dev->bdf;
+	uint8_t header = pci_config_readb(bdf, PCI_HEADER_TYPE);
+	uint8_t progif = pci_config_readb(bdf, PCI_CLASS_PROG);
+	uint8_t subclass = pci_config_readb(bdf, PCI_CLASS_DEVICE);
+	uint8_t class = pci_config_readb(bdf, PCI_CLASS_DEVICE + 1);
 	int i;
 
-	pci_dev_init(&pci_dev, dev);
-
 	pci_dev_print_id(dev);
 	printf(" type %02x progif %02x class %02x subclass %02x\n",
 	       header, progif, class, subclass);
 
-	pci_cap_walk(&pci_dev, pci_cap_print);
+	pci_cap_walk(dev, pci_cap_print);
 
 	if ((header & PCI_HEADER_TYPE_MASK) != PCI_HEADER_TYPE_NORMAL)
 		return;
 
 	for (i = 0; i < PCI_BAR_NUM; i++) {
-		if (pci_bar_is_valid(&pci_dev, i)) {
+		if (pci_bar_is_valid(dev, i)) {
 			printf("\t");
-			pci_bar_print(&pci_dev, i);
+			pci_bar_print(dev, i);
 			printf("\n");
 		}
-		if (pci_bar_is64(&pci_dev, i))
+		if (pci_bar_is64(dev, i))
 			i++;
 	}
 }
 
 void pci_print(void)
 {
-	pcidevaddr_t dev;
+	pcidevaddr_t devfn;
+	struct pci_dev pci_dev;
 
-	for (dev = 0; dev < PCI_DEVFN_MAX; ++dev) {
-		if (pci_dev_exists(dev))
-			pci_dev_print(dev);
+	for (devfn = 0; devfn < PCI_DEVFN_MAX; ++devfn) {
+		if (pci_dev_exists(devfn)) {
+			pci_dev_init(&pci_dev, devfn);
+			pci_dev_print(&pci_dev);
+		}
 	}
 }
 
diff --git a/lib/pci.h b/lib/pci.h
index fefd9a84b307..03cc0a72d48d 100644
--- a/lib/pci.h
+++ b/lib/pci.h
@@ -63,8 +63,8 @@ extern bool pci_bar_is64(struct pci_dev *dev, int bar_num);
 extern bool pci_bar_is_memory(struct pci_dev *dev, int bar_num);
 extern bool pci_bar_is_valid(struct pci_dev *dev, int bar_num);
 extern void pci_bar_print(struct pci_dev *dev, int bar_num);
-extern void pci_dev_print_id(pcidevaddr_t dev);
-extern void pci_dev_print(pcidevaddr_t dev);
+extern void pci_dev_print_id(struct pci_dev *dev);
+extern void pci_dev_print(struct pci_dev *dev);
 extern uint8_t pci_intx_line(struct pci_dev *dev);
 void pci_msi_set_enable(struct pci_dev *dev, bool enabled);
 
diff --git a/x86/intel-iommu.c b/x86/intel-iommu.c
index a01b23e674a8..610cc655c41b 100644
--- a/x86/intel-iommu.c
+++ b/x86/intel-iommu.c
@@ -154,7 +154,7 @@ int main(int argc, char *argv[])
 		report_skip(VTD_TEST_IR_MSI);
 	} else {
 		printf("Found EDU device:\n");
-		pci_dev_print(edu_dev.pci_dev.bdf);
+		pci_dev_print(&edu_dev.pci_dev);
 		vtd_test_dmar();
 		vtd_test_ir();
 	}
-- 
1.8.3.1