Changeset 67679 in vbox for trunk/src/VBox/Devices/PC/BIOS

Timestamp:

Jun 29, 2017 8:28:50 AM (8 years ago)

Author:

vboxsync

svn:sync-xref-src-repo-rev:

116498

Message:

BIOS: Explicitly enable bus mastering for AHCI.

Location:

trunk/src/VBox/Devices/PC/BIOS

Files:

• ahci.c (modified) (1 diff)
• pciutil.c (modified) (2 diffs)

trunk/src/VBox/Devices/PC/BIOS/ahci.c

@@ -1002 +1002 @@
                         uint16_t    u16AhciIoBase = (u32Bar & 0xfff0) + u16Off;
 
+                        /* Enable PCI memory, I/O, bus mastering access in command register. */
+                        pci_write_config_word(u8Bus, u8DevFn, 4, 0x7);
+
                         DBG_AHCI("I/O base: 0x%x\n", u16AhciIoBase);
                         rc = ahci_hba_init(u16AhciIoBase);

trunk/src/VBox/Devices/PC/BIOS/pciutil.c

@@ -152 +152 @@
 }
 
+void pci_write_config_word(uint8_t bus, uint8_t dev_fn, uint8_t reg, uint16_t val)
+{
+    pci_write_cfgw((PCIBIOS_ID << 8) | PCIBIOS_WRITE_CONFIG_WORD, (bus << 8) | dev_fn, reg, val);
+}
+
 #if 0 /* Disabled to save space because they are not needed. Might become useful in the future. */
 /**
@@ -174 +179 @@
 }
 
-void pci_write_config_word(uint8_t bus, uint8_t dev_fn, uint8_t reg, uint16_t val)
-{
-    pci_write_cfgw((PCIBIOS_ID << 8) | PCIBIOS_WRITE_CONFIG_WORD, (bus << 8) | dev_fn, reg, val);
-}
-
 void pci_write_config_dword(uint8_t bus, uint8_t dev_fn, uint8_t reg, uint32_t val)
 {