Changeset 42332 in vbox for trunk/src/VBox/Devices/PC/BIOS/pcibios.c

Timestamp:

Jul 23, 2012 4:48:01 PM (12 years ago)

Author:

vboxsync

Message:

BIOS: Expanded PCI service, removed old 16-bit implementation.

File:

• trunk/src/VBox/Devices/PC/BIOS/pcibios.c (modified) (4 diffs)

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

@@ -97 +97 @@
 typedef struct {
     pushad_regs_t   gr;
+    uint32_t        es;
     uint32_t        flags;
 } pci_regs_t;
@@ -157 +158 @@
 
 #endif
+
+/* PCI IRQ routing expansion buffer descriptor. */
+typedef struct {
+    uint16_t        buf_size;
+    uint8_t __far   *buf_ptr;
+} pci_route_buf;
+
+/* Defined in assembler module .*/
+extern char     pci_routing_table[];
+extern uint16_t pci_routing_table_size;
 
 /* Write the CONFIG_ADDRESS register to prepare for data access. Requires
@@ -293 +304 @@
 void BIOSCALL PCIxx(function)(volatile pci_regs_t r)
 {
-    uint16_t    device;
+    pci_route_buf __far     *route_buf;
+    uint16_t                device;
 
     BX_DEBUG_PCI("PCI: AX=%04X BX=%04X CX=%04X\n", AX, BX, CX);
@@ -367 +379 @@
         }
         break;
+    case GET_IRQ_ROUTING:
+        route_buf = ES :> (void *)DI;
+        if (pci_routing_table_size > route_buf->buf_size) {
+            SET_AH(BUFFER_TOO_SMALL);
+            SET_CF();
+        } else {
+            rep_movsb(route_buf->buf_ptr, pci_routing_table, pci_routing_table_size);
+        }
+        break;
     default:
         BX_INFO("PCI: Unsupported function AX=%04X BX=%04X called\n", AX, BX);