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add Uart2 for serial tablets

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This commit is contained in:
stanley lieber 2011-04-27 14:57:11 +00:00
parent 62d6def842
commit 863411f3b0
1 changed files with 19 additions and 3 deletions
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20
sys/src/9/pc/uarti8250.c
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@ -14,6 +14,8 @@ enum {
Uart0IRQ = 4,
Uart1 = 0x2F8, /* COM2 */
Uart1IRQ = 3,
Uart2 = 0x200, /* COM3 */
Uart2IRQ = 5,
UartFREQ = 1843200,
};
@ -121,7 +123,7 @@ typedef struct Ctlr {
extern PhysUart i8250physuart;
static Ctlr i8250ctlr[2] = {
static Ctlr i8250ctlr[3] = {
{ .io = Uart0,
.irq = Uart0IRQ,
.tbdf = BUSUNKNOWN, },
@ -129,9 +131,13 @@ static Ctlr i8250ctlr[2] = {
{ .io = Uart1,
.irq = Uart1IRQ,
.tbdf = BUSUNKNOWN, },
{ .io = Uart2,
.irq = Uart2IRQ,
.tbdf = BUSUNKNOWN, },
};
static Uart i8250uart[2] = {
static Uart i8250uart[3] = {
{ .regs = &i8250ctlr[0],
.name = "COM1",
.freq = UartFREQ,
@ -144,6 +150,13 @@ static Uart i8250uart[2] = {
.freq = UartFREQ,
.phys = &i8250physuart,
.special= 0,
.next = &i8250uart[2], },
{ .regs = &i8250ctlr[2],
.name = "COM3",
.freq = UartFREQ,
.phys = &i8250physuart,
.special= 0,
.next = nil, },
};
@ -702,6 +715,9 @@ i8250console(void)
case 1:
uart = &i8250uart[1];
break;
case 2:
uart = &i8250uart[2];
break;
}
(*uart->phys->enable)(uart, 0);