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char device support

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git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@1023 c046a42c-6fe2-441c-8c8c-71466251a162
This commit is contained in:
bellard 2004-07-14 17:28:13 +00:00
parent 457831f4bc
commit 82c643ff50
6 changed files with 411 additions and 79 deletions
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5
hw/pc.c
View file

@ -324,7 +324,7 @@ void pc_init(int ram_size, int vga_ram_size, int boot_device,
const char *initrd_filename)
{
char buf[1024];
int ret, linux_boot, initrd_size, i, nb_nics1, fd;
int ret, linux_boot, initrd_size, i, nb_nics1;
unsigned long bios_offset, vga_bios_offset;
int bios_size, isa_bios_size;
PCIBus *pci_bus;
@ -471,8 +471,7 @@ void pc_init(int ram_size, int vga_ram_size, int boot_device,
pic_init();
pit = pit_init(0x40, 0);
fd = serial_open_device();
serial_init(0x3f8, 4, fd);
serial_init(0x3f8, 4, serial_hd);
if (pci_enabled) {
for(i = 0; i < nb_nics; i++) {

5
hw/ppc_chrp.c
View file

@ -126,7 +126,7 @@ void ppc_chrp_init(int ram_size, int vga_ram_size, int boot_device,
openpic_t *openpic;
m48t59_t *nvram;
int PPC_io_memory;
int ret, linux_boot, i, fd;
int ret, linux_boot, i;
unsigned long bios_offset;
uint32_t kernel_base, kernel_size, initrd_base, initrd_size;
PCIBus *pci_bus;
@ -200,8 +200,7 @@ void ppc_chrp_init(int ram_size, int vga_ram_size, int boot_device,
pic_init();
/* XXX: use Mac Serial port */
fd = serial_open_device();
serial_init(0x3f8, 4, fd);
serial_init(0x3f8, 4, serial_hd);
for(i = 0; i < nb_nics; i++) {
pci_ne2000_init(pci_bus, &nd_table[i]);

5
hw/ppc_prep.c
View file

@ -415,7 +415,7 @@ void ppc_prep_init(int ram_size, int vga_ram_size, int boot_device,
char buf[1024];
m48t59_t *nvram;
int PPC_io_memory;
int ret, linux_boot, i, nb_nics1, fd;
int ret, linux_boot, i, nb_nics1;
unsigned long bios_offset;
uint32_t kernel_base, kernel_size, initrd_base, initrd_size;
PCIBus *pci_bus;
@ -492,8 +492,7 @@ void ppc_prep_init(int ram_size, int vga_ram_size, int boot_device,
pic_init();
// pit = pit_init(0x40, 0);
fd = serial_open_device();
serial_init(0x3f8, 4, fd);
serial_init(0x3f8, 4, serial_hd);
nb_nics1 = nb_nics;
if (nb_nics1 > NE2000_NB_MAX)
nb_nics1 = NE2000_NB_MAX;

41
hw/serial.c
View file

@ -84,7 +84,7 @@ struct SerialState {
it can be reset while reading iir */
int thr_ipending;
int irq;
int out_fd;
CharDriverState *chr;
};
static void serial_update_irq(SerialState *s)
@ -107,7 +107,6 @@ static void serial_ioport_write(void *opaque, uint32_t addr, uint32_t val)
{
SerialState *s = opaque;
unsigned char ch;
int ret;
addr &= 7;
#ifdef DEBUG_SERIAL
@ -122,13 +121,8 @@ static void serial_ioport_write(void *opaque, uint32_t addr, uint32_t val)
s->thr_ipending = 0;
s->lsr &= ~UART_LSR_THRE;
serial_update_irq(s);
if (s->out_fd >= 0) {
ch = val;
do {
ret = write(s->out_fd, &ch, 1);
} while (ret != 1);
}
ch = val;
qemu_chr_write(s->chr, &ch, 1);
s->thr_ipending = 1;
s->lsr |= UART_LSR_THRE;
s->lsr |= UART_LSR_TEMT;
@ -223,19 +217,19 @@ static uint32_t serial_ioport_read(void *opaque, uint32_t addr)
return ret;
}
int serial_can_receive(SerialState *s)
static int serial_can_receive(SerialState *s)
{
return !(s->lsr & UART_LSR_DR);
}
void serial_receive_byte(SerialState *s, int ch)
static void serial_receive_byte(SerialState *s, int ch)
{
s->rbr = ch;
s->lsr |= UART_LSR_DR;
serial_update_irq(s);
}
void serial_receive_break(SerialState *s)
static void serial_receive_break(SerialState *s)
{
s->rbr = 0;
s->lsr |= UART_LSR_BI | UART_LSR_DR;
@ -254,8 +248,15 @@ static void serial_receive1(void *opaque, const uint8_t *buf, int size)
serial_receive_byte(s, buf[0]);
}
static void serial_event(void *opaque, int event)
{
SerialState *s = opaque;
if (event == CHR_EVENT_BREAK)
serial_receive_break(s);
}
/* If fd is zero, it means that the serial device uses the console */
SerialState *serial_init(int base, int irq, int fd)
SerialState *serial_init(int base, int irq, CharDriverState *chr)
{
SerialState *s;
@ -268,16 +269,8 @@ SerialState *serial_init(int base, int irq, int fd)
register_ioport_write(base, 8, 1, serial_ioport_write, s);
register_ioport_read(base, 8, 1, serial_ioport_read, s);
if (fd < 0) {
/* no associated device */
s->out_fd = -1;
} else if (fd != 0) {
qemu_add_fd_read_handler(fd, serial_can_receive1, serial_receive1, s);
s->out_fd = fd;
} else {
serial_console = s;
s->out_fd = 1;
}
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;
}