Differential D5749 Diff 14649 sys/dev/uart/uart_dev_ns8250.c

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sys/dev/uart/uart_dev_ns8250.c

Show First 20 Lines • Show All 392 Lines • ▼ Show 20 Lines	struct uart_class uart_ns8250_class = {
.uc_rclk = DEFAULT_RCLK,		.uc_rclk = DEFAULT_RCLK,
.uc_rshift = 0		.uc_rshift = 0
};		};

#ifdef FDT		#ifdef FDT
static struct ofw_compat_data compat_data[] = {		static struct ofw_compat_data compat_data[] = {
{"ns16550", (uintptr_t)&uart_ns8250_class},		{"ns16550", (uintptr_t)&uart_ns8250_class},
{"ns16550a", (uintptr_t)&uart_ns8250_class},		{"ns16550a", (uintptr_t)&uart_ns8250_class},
{"snps,dw-apb-uart", (uintptr_t)&uart_ns8250_class},
{NULL, (uintptr_t)NULL},		{NULL, (uintptr_t)NULL},
};		};
UART_FDT_CLASS_AND_DEVICE(compat_data);		UART_FDT_CLASS_AND_DEVICE(compat_data);
#endif		#endif

/* Use token-pasting to form SER_ and MSR_ named constants. */		/* Use token-pasting to form SER_ and MSR_ named constants. */
#define SER(sig) SER_##sig		#define SER(sig) SER_##sig
#define SERD(sig) SER_D##sig		#define SERD(sig) SER_D##sig
Show All 36 Lines	ns8250_bus_attach(struct uart_softc *sc)
struct ns8250_softc ns8250 = (struct ns8250_softc)sc;		struct ns8250_softc ns8250 = (struct ns8250_softc)sc;
struct uart_bas *bas;		struct uart_bas *bas;
unsigned int ivar;		unsigned int ivar;
#ifdef FDT		#ifdef FDT
phandle_t node;		phandle_t node;
pcell_t cell;		pcell_t cell;
#endif		#endif

ns8250->busy_detect = 0;

#ifdef FDT		#ifdef FDT
/*		/* Check whether uart has a broken txfifo. */
* Check whether uart requires to read USR reg when IIR_BUSY and
* has broken txfifo.
*/
ns8250->busy_detect = ofw_bus_is_compatible(sc->sc_dev, "snps,dw-apb-uart");
node = ofw_bus_get_node(sc->sc_dev);		node = ofw_bus_get_node(sc->sc_dev);
/* XXX: This is kept for a short time for compatibility with older device trees */
if ((OF_getencprop(node, "busy-detect", &cell, sizeof(cell))) > 0
&& cell != 0)
ns8250->busy_detect = 1;
if ((OF_getencprop(node, "broken-txfifo", &cell, sizeof(cell))) > 0)		if ((OF_getencprop(node, "broken-txfifo", &cell, sizeof(cell))) > 0)
		manu_bidouilliste.comUnsubmitted Done Inline Actions This doesn't seems to be needed anymore, the busy-detect property was when ns8250 wasn't snps aware. manu_bidouilliste.com: This doesn't seems to be needed anymore, the busy-detect property was when ns8250 wasn't snps…
		andrewUnsubmitted Done Inline Actions It was kept around to give people a chance to update their dtb. It can be removed now. andrew: It was kept around to give people a chance to update their dtb. It can be removed now.
broken_txfifo = cell ? 1 : 0;		broken_txfifo = cell ? 1 : 0;
#endif		#endif

bas = &sc->sc_bas;		bas = &sc->sc_bas;

ns8250->mcr = uart_getreg(bas, REG_MCR);		ns8250->mcr = uart_getreg(bas, REG_MCR);
ns8250->fcr = FCR_ENABLE;		ns8250->fcr = FCR_ENABLE;
if (!resource_int_value("uart", device_get_unit(sc->sc_dev), "flags",		if (!resource_int_value("uart", device_get_unit(sc->sc_dev), "flags",
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