[Qemu-devel] [PATCH 10/27] pc: create PCInitArgs struct

[Eduardo Habkost <ehabkost@redhat.com>]

Instead of changing pc_init1() arguments every time some additional
machine-type-specific behavior has to be introduced, create a struct that will
carry all the information needed by the PC initialization functions.

Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
---
 hw/pc.h      |  8 ++++++++
 hw/pc_piix.c | 41 ++++++++++++++++++++++++++++-------------
 2 files changed, 36 insertions(+), 13 deletions(-)

diff --git a/hw/pc.h b/hw/pc.h
index e7993ca..04051ca 100644
--- a/hw/pc.h
+++ b/hw/pc.h
@@ -9,6 +9,7 @@
 #include "net.h"
 #include "memory.h"
 #include "ioapic.h"
+#include "boards.h"
 
 /* PC-style peripherals (also used by other machines).  */
 
@@ -75,6 +76,13 @@ void i8042_setup_a20_line(ISADevice *dev, qemu_irq *a20_out);
 /* pc.c */
 extern int fd_bootchk;
 
+/* Initialization parameters for the PC init functions */
+typedef struct PCInitArgs {
+    QEMUMachineInitArgs *qemu_args;
+    bool pci_enabled;
+    bool kvmclock_enabled;
+} PCInitArgs;
+
 void pc_register_ferr_irq(qemu_irq irq);
 void pc_acpi_smi_interrupt(void *opaque, int irq, int level);
 
diff --git a/hw/pc_piix.c b/hw/pc_piix.c
index 3eaed60..058fd43 100644
--- a/hw/pc_piix.c
+++ b/hw/pc_piix.c
@@ -118,9 +118,7 @@ static void ioapic_init(GSIState *gsi_state)
 }
 
 /* PC hardware initialisation */
-static void pc_init1(QEMUMachineInitArgs *args,
-                     int pci_enabled,
-                     int kvmclock_enabled)
+static void pc_init1(PCInitArgs *pc_args)
 {
     int i;
     ram_addr_t below_4g_mem_size, above_4g_mem_size;
@@ -143,16 +141,18 @@ static void pc_init1(QEMUMachineInitArgs *args,
     MemoryRegion *system_memory = get_system_memory();
     MemoryRegion *system_io = get_system_io();
     void *fw_cfg = NULL;
-    ram_addr_t ram_size = args->ram_size;
-    const char *cpu_model = args->cpu_model;
-    const char *kernel_filename = args->kernel_filename;
-    const char *kernel_cmdline = args->kernel_cmdline;
-    const char *initrd_filename = args->initrd_filename;
-    const char *boot_device = args->boot_device;
+    QEMUMachineInitArgs *qemu_args = pc_args->qemu_args;
+    ram_addr_t ram_size = qemu_args->ram_size;
+    const char *cpu_model = qemu_args->cpu_model;
+    const char *kernel_filename = qemu_args->kernel_filename;
+    const char *kernel_cmdline = qemu_args->kernel_cmdline;
+    const char *initrd_filename = qemu_args->initrd_filename;
+    const char *boot_device = qemu_args->boot_device;
+    bool pci_enabled = pc_args->pci_enabled;
 
     pc_cpus_init(cpu_model);
 
-    if (kvmclock_enabled) {
+    if (pc_args->kvmclock_enabled) {
         kvmclock_create();
     }
 
@@ -290,19 +290,34 @@ static void pc_init1(QEMUMachineInitArgs *args,
 
 static void pc_init_pci(QEMUMachineInitArgs *args)
 {
-    pc_init1(args, 1, 1);
+    PCInitArgs pc_args = {
+        .qemu_args = args,
+        .pci_enabled = true,
+        .kvmclock_enabled = true,
+    };
+    pc_init1(&pc_args);
 }
 
 static void pc_init_pci_no_kvmclock(QEMUMachineInitArgs *args)
 {
-    pc_init1(args, 1, 0);
+    PCInitArgs pc_args = {
+        .qemu_args = args,
+        .pci_enabled = true,
+        .kvmclock_enabled = false,
+    };
+    pc_init1(&pc_args);
 }
 
 static void pc_init_isa(QEMUMachineInitArgs *args)
 {
+    PCInitArgs pc_args = {
+        .qemu_args = args,
+        .pci_enabled = false,
+        .kvmclock_enabled = false,
+    };
     if (args->cpu_model == NULL)
         args->cpu_model = "486";
-    pc_init1(args, 0, 1);
+    pc_init1(&pc_args);
 }
 
 #ifdef CONFIG_XEN
-- 
1.7.11.7