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[Qemu-devel] [6609] Parse full PCI device addresses (Markus Armbruster)
From: |
Anthony Liguori |
Subject: |
[Qemu-devel] [6609] Parse full PCI device addresses (Markus Armbruster) |
Date: |
Wed, 11 Feb 2009 15:21:49 +0000 |
Revision: 6609
http://svn.sv.gnu.org/viewvc/?view=rev&root=qemu&revision=6609
Author: aliguori
Date: 2009-02-11 15:21:48 +0000 (Wed, 11 Feb 2009)
Log Message:
-----------
Parse full PCI device addresses (Markus Armbruster)
This code parses full PCI device addresses. It then rejects domains
other than zero, because these are not supported in QEMU.
Signed-off-by: Marcelo Tosatti <address@hidden>
Signed-off-by: Anthony Liguori <address@hidden>
Modified Paths:
--------------
trunk/hw/pci.c
trunk/hw/pci.h
Modified: trunk/hw/pci.c
===================================================================
--- trunk/hw/pci.c 2009-02-11 15:21:41 UTC (rev 6608)
+++ trunk/hw/pci.c 2009-02-11 15:21:48 UTC (rev 6609)
@@ -26,6 +26,7 @@
#include "console.h"
#include "net.h"
#include "virtio-net.h"
+#include "sysemu.h"
//#define DEBUG_PCI
@@ -158,6 +159,82 @@
return 0;
}
+/*
+ * Parse [[<domain>:]<bus>:]<slot>, return -1 on error
+ */
+static int pci_parse_devaddr(const char *addr, int *domp, int *busp, unsigned
*slotp)
+{
+ const char *p;
+ char *e;
+ unsigned long val;
+ unsigned long dom = 0, bus = 0;
+ unsigned slot = 0;
+
+ p = addr;
+ val = strtoul(p, &e, 16);
+ if (e == p)
+ return -1;
+ if (*e == ':') {
+ bus = val;
+ p = e + 1;
+ val = strtoul(p, &e, 16);
+ if (e == p)
+ return -1;
+ if (*e == ':') {
+ dom = bus;
+ bus = val;
+ p = e + 1;
+ val = strtoul(p, &e, 16);
+ if (e == p)
+ return -1;
+ }
+ }
+
+ if (dom > 0xffff || bus > 0xff || val > 0x1f)
+ return -1;
+
+ slot = val;
+
+ if (*e)
+ return -1;
+
+ /* Note: QEMU doesn't implement domains other than 0 */
+ if (dom != 0 || pci_find_bus(bus) == NULL)
+ return -1;
+
+ *domp = dom;
+ *busp = bus;
+ *slotp = slot;
+ return 0;
+}
+
+int pci_read_devaddr(const char *addr, int *domp, int *busp, unsigned *slotp)
+{
+ char devaddr[32];
+
+ if (!get_param_value(devaddr, sizeof(devaddr), "pci_addr", addr))
+ return -1;
+
+ return pci_parse_devaddr(devaddr, domp, busp, slotp);
+}
+
+int pci_assign_devaddr(const char *addr, int *domp, int *busp, unsigned *slotp)
+{
+ char devaddr[32];
+
+ if (!get_param_value(devaddr, sizeof(devaddr), "pci_addr", addr))
+ return -1;
+
+ if (!strcmp(devaddr, "auto")) {
+ *domp = *busp = 0;
+ *slotp = -1;
+ /* want to support dom/bus auto-assign at some point */
+ return 0;
+ }
+
+ return pci_parse_devaddr(devaddr, domp, busp, slotp);
+}
+
/* -1 for devfn means auto assign */
PCIDevice *pci_register_device(PCIBus *bus, const char *name,
int instance_size, int devfn,
Modified: trunk/hw/pci.h
===================================================================
--- trunk/hw/pci.h 2009-02-11 15:21:41 UTC (rev 6608)
+++ trunk/hw/pci.h 2009-02-11 15:21:48 UTC (rev 6609)
@@ -232,6 +232,9 @@
PCIBus *pci_find_bus(int bus_num);
PCIDevice *pci_find_device(int bus_num, int slot, int function);
+int pci_read_devaddr(const char *addr, int *domp, int *busp, unsigned *slotp);
+int pci_assign_devaddr(const char *addr, int *domp, int *busp, unsigned
*slotp);
+
void pci_info(void);
PCIBus *pci_bridge_init(PCIBus *bus, int devfn, uint16_t vid, uint16_t did,
pci_map_irq_fn map_irq, const char *name);
- [Qemu-devel] [6609] Parse full PCI device addresses (Markus Armbruster),
Anthony Liguori <=