commit 4d6cefa9f1fb54d0fe69f9442b6f928514614602
author Peter Xu <peterx@redhat.com> Mon Dec 12 11:08:14 2016 +0800
committer Paolo Bonzini <pbonzini@redhat.com> Thu Dec 22 12:49:18 2016 +0100
tree 877a7770652d1f7b7e3a696d3055cb95289ec25e
parent 9d7e08c0050c0834d5e77a1de0cfa3859d24c777

pci: introduce struct pci_dev

To extend current PCI framework, we need a per-device struct to store
device specific information. Time to have a pci_dev struct. Most of the
current PCI APIs are converted to use this pci_dev object as the first
argument. Currently it only contains one field "bdf", which is the bdf
of current device.

For a few APIs like pci_config_*() ops or pci_find_dev(), I kept the old
interface (use PCI BDF value rather than "struct pci_dev") since they
can be used in a open context that without any specific PCI device.

Reviewed-by: Andrew Jones <drjones@redhat.com>
Signed-off-by: Peter Xu <peterx@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

lib/pci.h

diff --git a/lib/pci.h b/lib/pci.h
index 86d6b42..355acd0 100644
--- a/lib/pci.h
+++ b/lib/pci.h
@@ -15,6 +15,14 @@
 	PCIDEVADDR_INVALID = 0xffff,
 };
 
+#define PCI_DEVFN_MAX                   256
+
+struct pci_dev {
+	uint16_t bdf;
+};
+
+extern void pci_dev_init(struct pci_dev *dev, pcidevaddr_t bdf);
+
 extern bool pci_probe(void);
 extern void pci_print(void);
 extern bool pci_dev_exists(pcidevaddr_t dev);
@@ -32,15 +40,15 @@
  * It is expected the caller is aware of the device BAR layout and never
  * tries to address the middle of a 64-bit register.
  */
-extern phys_addr_t pci_bar_get_addr(pcidevaddr_t dev, int bar_num);
-extern void pci_bar_set_addr(pcidevaddr_t dev, int bar_num, phys_addr_t addr);
-extern phys_addr_t pci_bar_size(pcidevaddr_t dev, int bar_num);
-extern uint32_t pci_bar_get(pcidevaddr_t dev, int bar_num);
+extern phys_addr_t pci_bar_get_addr(struct pci_dev *dev, int bar_num);
+extern void pci_bar_set_addr(struct pci_dev *dev, int bar_num, phys_addr_t addr);
+extern phys_addr_t pci_bar_size(struct pci_dev *dev, int bar_num);
+extern uint32_t pci_bar_get(struct pci_dev *dev, int bar_num);
 extern uint32_t pci_bar_mask(uint32_t bar);
-extern bool pci_bar_is64(pcidevaddr_t dev, int bar_num);
-extern bool pci_bar_is_memory(pcidevaddr_t dev, int bar_num);
-extern bool pci_bar_is_valid(pcidevaddr_t dev, int bar_num);
-extern void pci_bar_print(pcidevaddr_t dev, int bar_num);
+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 int pci_testdev(void);