more generic serial port (initial patch by Jocelyn Mayer)

git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@1654 c046a42c-6fe2-441c-8c8c-71466251a162

more generic serial port (initial patch by Jocelyn Mayer)
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@1654 c046a42c-6fe2-441c-8c8c-71466251a162
bellard
1 parent 2023a2c8
Showing 7 changed files with 112 additions and 11 deletions
hw/mips_r4k.c
hw/pc.c
hw/ppc_chrp.c
hw/ppc_prep.c
hw/serial.c
hw/sun4u.c
vl.h
@@ -251,7 +251,7 @@ void mips_r4k_init (int ram_size, int vga_ram_size, int boot_device,
  
     isa_pic = pic_init(pic_irq_request, env);
     pit = pit_init(0x40, 0);
-    serial_init(0x3f8, 4, serial_hds[0]);
+    serial_init(&pic_set_irq_new, isa_pic, 0x3f8, 4, serial_hds[0]);
     vga_initialize(NULL, ds, phys_ram_base + ram_size, ram_size, 
                    vga_ram_size, 0, 0);
  
@@ -599,7 +599,7 @@ static void pc_init1(int ram_size, int vga_ram_size, int boot_device,
             /* XXX: enable it in all cases */
             env->cpuid_features |= CPUID_APIC;
         }
-        register_savevm("cpu", 0, 3, cpu_save, cpu_load, env);
+        register_savevm("cpu", i, 3, cpu_save, cpu_load, env);
         qemu_register_reset(main_cpu_reset, env);
         if (pci_enabled) {
             apic_init(env);
@@ -757,7 +757,8 @@ static void pc_init1(int ram_size, int vga_ram_size, int boot_device,
  
     for(i = 0; i < MAX_SERIAL_PORTS; i++) {
         if (serial_hds[i]) {
-            serial_init(serial_io[i], serial_irq[i], serial_hds[i]);
+            serial_init(&pic_set_irq_new, isa_pic,
+                        serial_io[i], serial_irq[i], serial_hds[i]);
         }
     }
  
@@ -433,7 +433,7 @@ static void ppc_chrp_init(int ram_size, int vga_ram_size, int boot_device,
         isa_pic = pic_init(pic_irq_request, NULL);
  
         /* XXX: use Mac Serial port */
-        serial_init(0x3f8, 4, serial_hds[0]);
+        serial_init(&pic_set_irq_new, isa_pic, 0x3f8, 4, serial_hds[0]);
  
         for(i = 0; i < nb_nics; i++) {
             pci_ne2000_init(pci_bus, &nd_table[i]);
@@ -482,7 +482,7 @@ static void ppc_chrp_init(int ram_size, int vga_ram_size, int boot_device,
         isa_pic = pic_init(pic_irq_request, NULL);
  
         /* XXX: use Mac Serial port */
-        serial_init(0x3f8, 4, serial_hds[0]);
+        serial_init(&pic_set_irq_new, isa_pic, 0x3f8, 4, serial_hds[0]);
  
         for(i = 0; i < nb_nics; i++) {
             pci_ne2000_init(pci_bus, &nd_table[i]);
@@ -525,6 +525,7 @@ static void ppc_prep_init(int ram_size, int vga_ram_size, int boot_device,
 {
     CPUState *env;
     char buf[1024];
+    SetIRQFunc *set_irq;
     m48t59_t *nvram;
     int PPC_io_memory;
     int linux_boot, i, nb_nics1, bios_size;
@@ -618,7 +619,7 @@ static void ppc_prep_init(int ram_size, int vga_ram_size, int boot_device,
     isa_pic = pic_init(pic_irq_request, first_cpu);
     //    pit = pit_init(0x40, 0);
  
-    serial_init(0x3f8, 4, serial_hds[0]);
+    serial_init(&pic_set_irq_new, isa_pic, 0x3f8, 4, serial_hds[0]);
     nb_nics1 = nb_nics;
     if (nb_nics1 > NE2000_NB_MAX)
         nb_nics1 = NE2000_NB_MAX;
@@ -83,9 +83,13 @@ struct SerialState {
     /* NOTE: this hidden state is necessary for tx irq generation as
        it can be reset while reading iir */
     int thr_ipending;
+    SetIRQFunc *set_irq;
+    void *irq_opaque;
     int irq;
     CharDriverState *chr;
     int last_break_enable;
+    target_ulong base;
+    int it_shift;
 };
  
 static void serial_update_irq(SerialState *s)
@@ -98,9 +102,9 @@ static void serial_update_irq(SerialState *s)
         s->iir = UART_IIR_NO_INT;
     }
     if (s->iir != UART_IIR_NO_INT) {
-        pic_set_irq(s->irq, 1);
+        s->set_irq(s->irq_opaque, s->irq, 1);
     } else {
-        pic_set_irq(s->irq, 0);
+        s->set_irq(s->irq_opaque, s->irq, 0);
     }
 }
  
@@ -339,13 +343,16 @@ static int serial_load(QEMUFile *f, void *opaque, int version_id)
 }
  
 /* If fd is zero, it means that the serial device uses the console */
-SerialState *serial_init(int base, int irq, CharDriverState *chr)
+SerialState *serial_init(SetIRQFunc *set_irq, void *opaque,
+                         int base, int irq, CharDriverState *chr)
 {
     SerialState *s;
  
     s = qemu_mallocz(sizeof(SerialState));
     if (!s)
         return NULL;
+    s->set_irq = set_irq;
+    s->irq_opaque = opaque;
     s->irq = irq;
     s->lsr = UART_LSR_TEMT | UART_LSR_THRE;
     s->iir = UART_IIR_NO_INT;
@@ -359,3 +366,90 @@ SerialState *serial_init(int base, int irq, CharDriverState *chr)
     qemu_chr_add_event_handler(chr, serial_event);
     return s;
 }
+
+/* Memory mapped interface */
+static uint32_t serial_mm_readb (void *opaque, target_phys_addr_t addr)
+{
+    SerialState *s = opaque;
+
+    return serial_ioport_read(s, (addr - s->base) >> s->it_shift) & 0xFF;
+}
+
+static void serial_mm_writeb (void *opaque,
+                              target_phys_addr_t addr, uint32_t value)
+{
+    SerialState *s = opaque;
+
+    serial_ioport_write(s, (addr - s->base) >> s->it_shift, value & 0xFF);
+}
+
+static uint32_t serial_mm_readw (void *opaque, target_phys_addr_t addr)
+{
+    SerialState *s = opaque;
+
+    return serial_ioport_read(s, (addr - s->base) >> s->it_shift) & 0xFFFF;
+}
+
+static void serial_mm_writew (void *opaque,
+                              target_phys_addr_t addr, uint32_t value)
+{
+    SerialState *s = opaque;
+
+    serial_ioport_write(s, (addr - s->base) >> s->it_shift, value & 0xFFFF);
+}
+
+static uint32_t serial_mm_readl (void *opaque, target_phys_addr_t addr)
+{
+    SerialState *s = opaque;
+
+    return serial_ioport_read(s, (addr - s->base) >> s->it_shift);
+}
+
+static void serial_mm_writel (void *opaque,
+                              target_phys_addr_t addr, uint32_t value)
+{
+    SerialState *s = opaque;
+
+    serial_ioport_write(s, (addr - s->base) >> s->it_shift, value);
+}
+
+static CPUReadMemoryFunc *serial_mm_read[] = {
+    &serial_mm_readb,
+    &serial_mm_readw,
+    &serial_mm_readl,
+};
+
+static CPUWriteMemoryFunc *serial_mm_write[] = {
+    &serial_mm_writeb,
+    &serial_mm_writew,
+    &serial_mm_writel,
+};
+
+SerialState *serial_mm_init (SetIRQFunc *set_irq, void *opaque,
+                             target_ulong base, int it_shift,
+                             int irq, CharDriverState *chr)
+{
+    SerialState *s;
+    int s_io_memory;
+
+    s = qemu_mallocz(sizeof(SerialState));
+    if (!s)
+        return NULL;
+    s->set_irq = set_irq;
+    s->irq_opaque = opaque;
+    s->irq = irq;
+    s->lsr = UART_LSR_TEMT | UART_LSR_THRE;
+    s->iir = UART_IIR_NO_INT;
+    s->base = base;
+    s->it_shift = it_shift;
+
+    register_savevm("serial", base, 1, serial_save, serial_load, s);
+
+    s_io_memory = cpu_register_io_memory(0, serial_mm_read,
+                                         serial_mm_write, s);
+    cpu_register_physical_memory(base, 8 << it_shift, s_io_memory);
+    s->chr = chr;
+    qemu_chr_add_read_handler(chr, serial_can_receive1, serial_receive1, s);
+    qemu_chr_add_event_handler(chr, serial_event);
+    return s;
+}
@@ -335,7 +335,8 @@ static void sun4u_init(int ram_size, int vga_ram_size, int boot_device,
  
     for(i = 0; i < MAX_SERIAL_PORTS; i++) {
         if (serial_hds[i]) {
-            serial_init(serial_io[i], serial_irq[i], serial_hds[i]);
+            serial_init(&pic_set_irq_new, NULL,
+                        serial_io[i], serial_irq[i], serial_hds[i]);
         }
     }
  
@@ -733,7 +733,11 @@ void rtc_set_date(RTCState *s, const struct tm *tm);
 /* serial.c */
  
 typedef struct SerialState SerialState;
-SerialState *serial_init(int base, int irq, CharDriverState *chr);
+SerialState *serial_init(SetIRQFunc *set_irq, void *opaque,
+                         int base, int irq, CharDriverState *chr);
+SerialState *serial_mm_init (SetIRQFunc *set_irq, void *opaque,
+                             target_ulong base, int it_shift,
+                             int irq, CharDriverState *chr);
  
 /* parallel.c */