[Qemu-devel] [PATCH 5/5] parallel: convert isa to qdev

[Gerd Hoffmann <kraxel@redhat.com>]

Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
---
 hw/mips_malta.c |    2 +-
 hw/parallel.c   |   80 ++++++++++++++++++++++++++++++++++++++++++------------
 hw/pc.c         |    3 +-
 hw/pc.h         |    2 +-
 hw/sun4u.c      |    3 +-
 5 files changed, 66 insertions(+), 24 deletions(-)

diff --git a/hw/mips_malta.c b/hw/mips_malta.c
index ed11b45..e348c1e 100644
--- a/hw/mips_malta.c
+++ b/hw/mips_malta.c
@@ -936,7 +936,7 @@ void mips_malta_init (ram_addr_t ram_size,
     serial_isa_init(0, serial_hds[0]);
     serial_isa_init(1, serial_hds[1]);
     if (parallel_hds[0])
-        parallel_init(0x378, isa_reserve_irq(7), parallel_hds[0]);
+        parallel_init(0, parallel_hds[0]);
     for(i = 0; i < MAX_FD; i++) {
         fd[i] = drive_get(IF_FLOPPY, 0, i);
     }
diff --git a/hw/parallel.c b/hw/parallel.c
index faaaa0d..30c53a2 100644
--- a/hw/parallel.c
+++ b/hw/parallel.c
@@ -78,6 +78,13 @@ struct ParallelState {
     int it_shift;
 };
 
+typedef struct ISAParallelState {
+    ISADevice dev;
+    uint32_t iobase;
+    uint32_t isairq;
+    ParallelState state;
+} ISAParallelState;
+
 static void parallel_update_irq(ParallelState *s)
 {
     if (s->irq_pending)
@@ -438,38 +445,56 @@ static void parallel_reset(void *opaque)
     s->last_read_offset = ~0U;
 }
 
-/* If fd is zero, it means that the parallel device uses the console */
-ParallelState *parallel_init(int base, qemu_irq irq, CharDriverState *chr)
+static int parallel_isa_initfn(ISADevice *dev)
 {
-    ParallelState *s;
+    ISAParallelState *isa = DO_UPCAST(ISAParallelState, dev, dev);
+    ParallelState *s = &isa->state;
     uint8_t dummy;
 
-    s = qemu_mallocz(sizeof(ParallelState));
-    s->irq = irq;
-    s->chr = chr;
+    if (!s->chr) {
+        fprintf(stderr, "Can't create parallel device, empty char device\n");
+        exit(1);
+    }
+
+    isa_init_irq(dev, &s->irq, isa->isairq);
     parallel_reset(s);
     qemu_register_reset(parallel_reset, s);
 
-    if (qemu_chr_ioctl(chr, CHR_IOCTL_PP_READ_STATUS, &dummy) == 0) {
+    if (qemu_chr_ioctl(s->chr, CHR_IOCTL_PP_READ_STATUS, &dummy) == 0) {
         s->hw_driver = 1;
         s->status = dummy;
     }
 
     if (s->hw_driver) {
-        register_ioport_write(base, 8, 1, parallel_ioport_write_hw, s);
-        register_ioport_read(base, 8, 1, parallel_ioport_read_hw, s);
-        register_ioport_write(base+4, 1, 2, parallel_ioport_eppdata_write_hw2, s);
-        register_ioport_read(base+4, 1, 2, parallel_ioport_eppdata_read_hw2, s);
-        register_ioport_write(base+4, 1, 4, parallel_ioport_eppdata_write_hw4, s);
-        register_ioport_read(base+4, 1, 4, parallel_ioport_eppdata_read_hw4, s);
-        register_ioport_write(base+0x400, 8, 1, parallel_ioport_ecp_write, s);
-        register_ioport_read(base+0x400, 8, 1, parallel_ioport_ecp_read, s);
+        register_ioport_write(isa->iobase, 8, 1, parallel_ioport_write_hw, s);
+        register_ioport_read(isa->iobase, 8, 1, parallel_ioport_read_hw, s);
+        register_ioport_write(isa->iobase+4, 1, 2, parallel_ioport_eppdata_write_hw2, s);
+        register_ioport_read(isa->iobase+4, 1, 2, parallel_ioport_eppdata_read_hw2, s);
+        register_ioport_write(isa->iobase+4, 1, 4, parallel_ioport_eppdata_write_hw4, s);
+        register_ioport_read(isa->iobase+4, 1, 4, parallel_ioport_eppdata_read_hw4, s);
+        register_ioport_write(isa->iobase+0x400, 8, 1, parallel_ioport_ecp_write, s);
+        register_ioport_read(isa->iobase+0x400, 8, 1, parallel_ioport_ecp_read, s);
     }
     else {
-        register_ioport_write(base, 8, 1, parallel_ioport_write_sw, s);
-        register_ioport_read(base, 8, 1, parallel_ioport_read_sw, s);
+        register_ioport_write(isa->iobase, 8, 1, parallel_ioport_write_sw, s);
+        register_ioport_read(isa->iobase, 8, 1, parallel_ioport_read_sw, s);
     }
-    return s;
+    return 0;
+}
+
+static const int isa_parallel_io[MAX_PARALLEL_PORTS] = { 0x378, 0x278, 0x3bc };
+
+ParallelState *parallel_init(int index, CharDriverState *chr)
+{
+    ISADevice *dev;
+
+    dev = isa_create("isa-parallel");
+    qdev_prop_set_uint32(&dev->qdev, "iobase", isa_parallel_io[index]);
+    qdev_prop_set_uint32(&dev->qdev, "irq", 7);
+    qdev_prop_set_chr(&dev->qdev, "chardev", chr);
+    if (qdev_init(&dev->qdev) != 0)
+        return NULL;
+    return &DO_UPCAST(ISAParallelState, dev, dev)->state;
 }
 
 /* Memory mapped interface */
@@ -547,3 +572,22 @@ ParallelState *parallel_mm_init(target_phys_addr_t base, int it_shift, qemu_irq
     cpu_register_physical_memory(base, 8 << it_shift, io_sw);
     return s;
 }
+
+static ISADeviceInfo parallel_isa_info = {
+    .qdev.name  = "isa-parallel",
+    .qdev.size  = sizeof(ISAParallelState),
+    .init       = parallel_isa_initfn,
+    .qdev.props = (Property[]) {
+        DEFINE_PROP_HEX32("iobase", ISAParallelState, iobase,  0x378),
+        DEFINE_PROP_UINT32("irq",   ISAParallelState, isairq,  7),
+        DEFINE_PROP_CHR("chardev",  ISAParallelState, state.chr),
+        DEFINE_PROP_END_OF_LIST(),
+    },
+};
+
+static void parallel_register_devices(void)
+{
+    isa_qdev_register(&parallel_isa_info);
+}
+
+device_init(parallel_register_devices)
diff --git a/hw/pc.c b/hw/pc.c
index 052c0a2..85e59cc 100644
--- a/hw/pc.c
+++ b/hw/pc.c
@@ -1332,8 +1332,7 @@ static void pc_init1(ram_addr_t ram_size,
 
     for(i = 0; i < MAX_PARALLEL_PORTS; i++) {
         if (parallel_hds[i]) {
-            parallel_init(parallel_io[i], isa_reserve_irq(parallel_irq[i]),
-                          parallel_hds[i]);
+            parallel_init(i, parallel_hds[i]);
         }
     }
 
diff --git a/hw/pc.h b/hw/pc.h
index b547d17..5139616 100644
--- a/hw/pc.h
+++ b/hw/pc.h
@@ -17,7 +17,7 @@ SerialState *serial_isa_init(int index, CharDriverState *chr);
 /* parallel.c */
 
 typedef struct ParallelState ParallelState;
-ParallelState *parallel_init(int base, qemu_irq irq, CharDriverState *chr);
+ParallelState *parallel_init(int index, CharDriverState *chr);
 ParallelState *parallel_mm_init(target_phys_addr_t base, int it_shift, qemu_irq irq, CharDriverState *chr);
 
 /* i8259.c */
diff --git a/hw/sun4u.c b/hw/sun4u.c
index 2b55cf3..e93c007 100644
--- a/hw/sun4u.c
+++ b/hw/sun4u.c
@@ -593,8 +593,7 @@ static void sun4uv_init(ram_addr_t RAM_size,
 
     for(i = 0; i < MAX_PARALLEL_PORTS; i++) {
         if (parallel_hds[i]) {
-            parallel_init(parallel_io[i], NULL/*parallel_irq[i]*/,
-                          parallel_hds[i]);
+            parallel_init(i, parallel_hds[i]);
         }
     }
 
-- 
1.6.2.5