commit 456c55bc9e0ae44906b4eb55da41cbbea0638984
author Andrew Jones <drjones@redhat.com> Mon Jan 18 19:01:02 2016 +0100
committer Paolo Bonzini <pbonzini@redhat.com> Tue Jan 19 15:41:47 2016 +0100
tree 647c9c552d2c5dc1ebbfbf52fe739a3c6adca0f0
parent 0c79603871a39e5e765e9e41eecd4a05326bbd03

x86: move x86/pci to the common lib

Also move pci_config_read into asm/pci.h

Signed-off-by: Andrew Jones <drjones@redhat.com>
Reviewed-by: Radim Krčmář <rkrcmar@redhat.com>
Message-Id: <1453140064-9040-7-git-send-email-drjones@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

lib/pci.c

diff --git a/lib/pci.c b/lib/pci.c
new file mode 100644
index 0000000..0058d70
--- /dev/null
+++ b/lib/pci.c
@@ -0,0 +1,43 @@
+/*
+ * Copyright (C) 2013, Red Hat Inc, Michael S. Tsirkin <mst@redhat.com>
+ *
+ * This work is licensed under the terms of the GNU LGPL, version 2.
+ */
+#include <linux/pci_regs.h>
+#include "pci.h"
+#include "asm/pci.h"
+
+/* Scan bus look for a specific device. Only bus 0 scanned for now. */
+pcidevaddr_t pci_find_dev(uint16_t vendor_id, uint16_t device_id)
+{
+    unsigned dev;
+    for (dev = 0; dev < 256; ++dev) {
+    uint32_t id = pci_config_read(dev, 0);
+    if ((id & 0xFFFF) == vendor_id && (id >> 16) == device_id) {
+        return dev;
+    }
+    }
+    return PCIDEVADDR_INVALID;
+}
+
+unsigned long pci_bar_addr(pcidevaddr_t dev, int bar_num)
+{
+    uint32_t bar = pci_config_read(dev, PCI_BASE_ADDRESS_0 + bar_num * 4);
+    if (bar & PCI_BASE_ADDRESS_SPACE_IO) {
+        return bar & PCI_BASE_ADDRESS_IO_MASK;
+    } else {
+        return bar & PCI_BASE_ADDRESS_MEM_MASK;
+    }
+}
+
+bool pci_bar_is_memory(pcidevaddr_t dev, int bar_num)
+{
+    uint32_t bar = pci_config_read(dev, PCI_BASE_ADDRESS_0 + bar_num * 4);
+    return !(bar & PCI_BASE_ADDRESS_SPACE_IO);
+}
+
+bool pci_bar_is_valid(pcidevaddr_t dev, int bar_num)
+{
+    uint32_t bar = pci_config_read(dev, PCI_BASE_ADDRESS_0 + bar_num * 4);
+    return bar;
+}