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--- etc:users:jcmvbkbc:little-things:3 [2009/12/24 12:53] – plan jcmvbkbc
+++ etc:users:jcmvbkbc:little-things:3 [2016/08/08 20:53] (current) – ↷ Page moved from users:jcmvbkbc:little-things:3 to etc:users:jcmvbkbc:little-things:3 kel
@@ Line 4: / Line 4: @@
   * Find some suitable reference PCI device in hw/
   * See details of bus interface. See used idioms
-  * Design ADC command system
+  * <del>Design ADC command system</del>
   * Implement ADC and plug it into reference platform, e.g. PC
 ===== Worklog =====
+  * Make the following dummy device (qemu-0.12.1):
+<code>
+diff --git a/hw/iigp1.c b/hw/iigp1.c
+new file mode 100644
+index 0000000..c251dbe
+--- /dev/null
++++ b/hw/iigp1.c
+@@ -0,0 +1,48 @@
++
++#include "pci.h"
++
++#define PCI_CLASS_DA_DSP (0x1100)
++#define PCI_VENDOR_ID_II (0x8089)
++#define PCI_VENDOR_ID_II_GP1 (0x0001)
++
++typedef struct IIGP1State
++{
++    PCIDevice dev;
++} IIGP1State;
++
++static void iigp1_on_reset (void *opaque)
++{
++}
++
++static inline void pci_config_set_byte (void *config, int offset, uint8_t byte)
++{
++    ((uint8_t*)config)[offset] = byte;
++}
++
++static int iigp1_initfn (PCIDevice *dev)
++{
++    pci_config_set_vendor_id (dev->config, PCI_VENDOR_ID_II);
++    pci_config_set_device_id (dev->config, PCI_VENDOR_ID_II_GP1);
++    pci_config_set_class (dev->config, PCI_CLASS_DA_DSP);
++    pci_config_set_byte (dev->config, PCI_INTERRUPT_PIN, 1);
++    pci_config_set_byte (dev->config, PCI_MIN_GNT, 0x0c);
++    pci_config_set_byte (dev->config, PCI_MAX_LAT, 0x80);
++
++    qemu_register_reset (iigp1_on_reset, dev);
++
++    return 0;
++}
++
++static PCIDeviceInfo iigp1_info = {
++    .qdev.name    = "IIGP1",
++    .qdev.desc    = "II GP 1",
++    .qdev.size    = sizeof (IIGP1State),
++    //.qdev.vmsd    = &vmstate_iigp1,
++    .init         = iigp1_initfn,
++};
++
++static void iigp1_register (void)
++{
++    pci_qdev_register (&iigp1_info);
++}
++device_init (iigp1_register);
+</code>
+  * add it to PC platform:
+<file>
+diff --git a/hw/pc.c b/hw/pc.c
+index db7d58e..d47573f 100644
+--- a/hw/pc.c
++++ b/hw/pc.c
+@@ -1251,6 +1251,10 @@ static void pc_init1(ram_addr_t ram_size,
+         }
+     }
++    if (pci_enabled) {
++        pci_create_simple(pci_bus, -1, "IIGP1");
++    }
++
+     rom_load_fw(fw_cfg);
+ }
+</file>
+  * and add to makefile:
+<code>
+diff --git a/Makefile.target b/Makefile.target
+index 7c1f30c..b2bd1b7 100644
+--- a/Makefile.target
++++ b/Makefile.target
+@@ -186,6 +186,8 @@ obj-y += pcnet.o
+ obj-y += rtl8139.o
+ obj-y += e1000.o
++obj-y += iigp1.o
++
+ # Hardware support
+ obj-i386-y = ide/core.o ide/qdev.o ide/isa.o ide/pci.o ide/piix.o
+ obj-i386-y += pckbd.o $(sound-obj-y) dma.o
+</code>
+Code: ftp://kkv.spb.su/pub/home/dumb/ws/lted/20091224
 ===== Conclusion =====
+  * Too complex to complete in 2 hours;
+  * No clear infrastructure for PCI device plugging;
+  * Make a simple PCI device, modeled after es1370.
+{{tag>qemu PCI lted}}