[Qemu-devel] [6266] Add EBUS bridge

[Blue Swirl]

Revision: 6266
          http://svn.sv.gnu.org/viewvc/?view=rev&root=qemu&revision=6266
Author:   blueswir1
Date:     2009-01-10 11:33:32 +0000 (Sat, 10 Jan 2009)

Log Message:
-----------
Add EBUS bridge

Modified Paths:
--------------
    trunk/hw/apb_pci.c
    trunk/hw/pci.h
    trunk/hw/sun4u.c

Modified: trunk/hw/apb_pci.c
===================================================================
--- trunk/hw/apb_pci.c  2009-01-09 20:53:30 UTC (rev 6265)
+++ trunk/hw/apb_pci.c  2009-01-10 11:33:32 UTC (rev 6266)
@@ -223,12 +223,11 @@
 
 PCIBus *pci_apb_init(target_phys_addr_t special_base,
                      target_phys_addr_t mem_base,
-                     qemu_irq *pic)
+                     qemu_irq *pic, PCIBus **bus2, PCIBus **bus3)
 {
     APBState *s;
     PCIDevice *d;
     int pci_mem_config, pci_mem_data, apb_config, pci_ioport;
-    PCIBus *secondary;
 
     s = qemu_mallocz(sizeof(APBState));
     /* Ultrasparc PBM main bus */
@@ -269,9 +268,9 @@
     d->config[0x0E] = 0x00; // header_type
 
     /* APB secondary busses */
-    secondary = pci_bridge_init(s->bus, 8, 0x108e5000, pci_apb_map_irq,
-                                "Advanced PCI Bus secondary bridge 1");
-    pci_bridge_init(s->bus, 9, 0x108e5000, pci_apb_map_irq,
-                    "Advanced PCI Bus secondary bridge 2");
+    *bus2 = pci_bridge_init(s->bus, 8, 0x108e5000, pci_apb_map_irq,
+                            "Advanced PCI Bus secondary bridge 1");
+    *bus3 = pci_bridge_init(s->bus, 9, 0x108e5000, pci_apb_map_irq,
+                            "Advanced PCI Bus secondary bridge 2");
     return s->bus;
 }

Modified: trunk/hw/pci.h
===================================================================
--- trunk/hw/pci.h      2009-01-09 20:53:30 UTC (rev 6265)
+++ trunk/hw/pci.h      2009-01-10 11:33:32 UTC (rev 6266)
@@ -168,8 +168,9 @@
 PCIBus *pci_prep_init(qemu_irq *pic);
 
 /* apb_pci.c */
-PCIBus *pci_apb_init(target_phys_addr_t special_base, target_phys_addr_t 
mem_base,
-                     qemu_irq *pic);
+PCIBus *pci_apb_init(target_phys_addr_t special_base,
+                     target_phys_addr_t mem_base,
+                     qemu_irq *pic, PCIBus **bus2, PCIBus **bus3);
 
 /* sh_pci.c */
 PCIBus *sh_pci_register_bus(pci_set_irq_fn set_irq, pci_map_irq_fn map_irq,

Modified: trunk/hw/sun4u.c
===================================================================
--- trunk/hw/sun4u.c    2009-01-09 20:53:30 UTC (rev 6265)
+++ trunk/hw/sun4u.c    2009-01-10 11:33:32 UTC (rev 6266)
@@ -344,6 +344,48 @@
 
 static fdctrl_t *floppy_controller;
 
+static void ebus_mmio_mapfunc(PCIDevice *pci_dev, int region_num,
+                              uint32_t addr, uint32_t size, int type)
+{
+    DPRINTF("Mapping region %d registers at %08x\n", region_num, addr);
+    switch (region_num) {
+    case 0:
+        isa_mmio_init(addr, 0x1000000);
+        break;
+    case 1:
+        isa_mmio_init(addr, 0x800000);
+        break;
+    }
+}
+
+/* EBUS (Eight bit bus) bridge */
+static void
+pci_ebus_init(PCIBus *bus, int devfn)
+{
+    PCIDevice *s;
+
+    s = pci_register_device(bus, "EBUS", sizeof(*s), devfn, NULL, NULL);
+    s->config[0x00] = 0x8e; // vendor_id : Sun
+    s->config[0x01] = 0x10;
+    s->config[0x02] = 0x00; // device_id
+    s->config[0x03] = 0x10;
+    s->config[0x04] = 0x06; // command = bus master, pci mem
+    s->config[0x05] = 0x00;
+    s->config[0x06] = 0xa0; // status = fast back-to-back, 66MHz, no error
+    s->config[0x07] = 0x03; // status = medium devsel
+    s->config[0x08] = 0x01; // revision
+    s->config[0x09] = 0x00; // programming i/f
+    s->config[0x0A] = 0x80; // class_sub = misc bridge
+    s->config[0x0B] = 0x06; // class_base = PCI_bridge
+    s->config[0x0D] = 0x0a; // latency_timer
+    s->config[0x0E] = 0x00; // header_type
+
+    pci_register_io_region(s, 0, 0x1000000, PCI_ADDRESS_SPACE_MEM,
+                           ebus_mmio_mapfunc);
+    pci_register_io_region(s, 1, 0x800000,  PCI_ADDRESS_SPACE_MEM,
+                           ebus_mmio_mapfunc);
+}
+
 static void sun4uv_init(ram_addr_t RAM_size, int vga_ram_size,
                         const char *boot_devices, DisplayState *ds,
                         const char *kernel_filename, const char 
*kernel_cmdline,
@@ -357,7 +399,7 @@
     unsigned int i;
     ram_addr_t ram_offset, prom_offset, vga_ram_offset;
     long initrd_size, kernel_size;
-    PCIBus *pci_bus;
+    PCIBus *pci_bus, *pci_bus2, *pci_bus3;
     QEMUBH *bh;
     qemu_irq *irq;
     int drive_index;
@@ -462,13 +504,17 @@
             }
         }
     }
-    pci_bus = pci_apb_init(APB_SPECIAL_BASE, APB_MEM_BASE, NULL);
+    pci_bus = pci_apb_init(APB_SPECIAL_BASE, APB_MEM_BASE, NULL, &pci_bus2,
+                           &pci_bus3);
     isa_mem_base = VGA_BASE;
     vga_ram_offset = qemu_ram_alloc(vga_ram_size);
     pci_vga_init(pci_bus, ds, phys_ram_base + vga_ram_offset,
                  vga_ram_offset, vga_ram_size,
                  0, 0);
 
+    // XXX Should be pci_bus3
+    pci_ebus_init(pci_bus, -1);
+
     i = 0;
     if (hwdef->console_serial_base) {
         serial_mm_init(hwdef->console_serial_base, 0, NULL, 115200,