[1/3] pc-bios: enable io/memory unconditionally

Commit Message

Michael S. Tsirkin Oct. 8, 2009, 2:52 p.m. UTC

None

Patch

diff --git a/kvm/bios/rombios32.c b/kvm/bios/rombios32.c
index 0b3556c..747a97b 100755
--- a/kvm/bios/rombios32.c
+++ b/kvm/bios/rombios32.c
@@ -700,6 +700,7 @@  void smp_probe(void)
 #define PCI_COMMAND		0x04	/* 16 bits */
 #define  PCI_COMMAND_IO		0x1	/* Enable response in I/O space */
 #define  PCI_COMMAND_MEMORY	0x2	/* Enable response in Memory space */
+#define PCI_CLASS_PROG		0x09	/* Reg. Level Programming Interface */
 #define PCI_CLASS_DEVICE        0x0a    /* Device class */
 #define PCI_INTERRUPT_LINE	0x3c	/* 8 bits */
 #define PCI_INTERRUPT_PIN	0x3d	/* 8 bits */
@@ -767,7 +768,6 @@  static uint32_t pci_config_readb(PCIDevice *d, uint32_t addr)
 
 static void pci_set_io_region_addr(PCIDevice *d, int region_num, uint32_t addr)
 {
-    uint16_t cmd;
     uint32_t ofs, old_addr;
 
     if ( region_num == PCI_ROM_SLOT ) {
@@ -780,16 +780,6 @@  static void pci_set_io_region_addr(PCIDevice *d, int region_num, uint32_t addr)
 
     pci_config_writel(d, ofs, addr);
     BX_INFO("region %d: 0x%08x\n", region_num, addr);
-
-    /* enable memory mappings */
-    cmd = pci_config_readw(d, PCI_COMMAND);
-    if ( region_num == PCI_ROM_SLOT )
-        cmd |= 2;
-    else if (old_addr & PCI_ADDRESS_SPACE_IO)
-        cmd |= 1;
-    else
-        cmd |= 2;
-    pci_config_writew(d, PCI_COMMAND, cmd);
 }
 
 /* return the global irq number corresponding to a given device irq
@@ -946,6 +936,7 @@  static void pci_bios_init_device(PCIDevice *d)
 {
     int class;
     uint32_t *paddr;
+    uint16_t cmd;
     int i, pin, pic_irq, vendor_id, device_id;
 
     class = pci_config_readw(d, PCI_CLASS_DEVICE);
@@ -1024,6 +1015,11 @@  static void pci_bios_init_device(PCIDevice *d)
         break;
     }
 
+    /* enable memory mappings */
+    cmd = pci_config_readw(d, PCI_COMMAND);
+    cmd |= PCI_COMMAND_IO | PCI_COMMAND_MEMORY;
+    pci_config_writew(d, PCI_COMMAND, cmd);
+
     /* map the interrupt */
     pin = pci_config_readb(d, PCI_INTERRUPT_PIN);
     if (pin != 0) {