preliminary support for com type UART in IT8712 superio chip
attached at LPC bus at Gemini LPC Host Controller at obio on Gemini.
This commit is contained in:
cliff
parent
3100fdac39
commit
2842dccfaa
212
sys/arch/arm/gemini/gemini_lpc.c
Normal file
212
sys/arch/arm/gemini/gemini_lpc.c
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@ -0,0 +1,212 @@
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/* $NetBSD: gemini_lpc.c,v 1.1 2008/11/09 09:15:42 cliff Exp $ */
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#include "opt_gemini.h"
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#include "locators.h"
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#include <sys/cdefs.h>
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__KERNEL_RCSID(0, "$NetBSD: gemini_lpc.c,v 1.1 2008/11/09 09:15:42 cliff Exp $");
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/device.h>
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#include <arch/arm/gemini/gemini_lpcvar.h>
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#include <arch/arm/gemini/gemini_lpchcvar.h>
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#include <arch/arm/gemini/gemini_reg.h>
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/* XXX these should be in lpcreg.h or it8721reg.h */
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#define IT8712_CFGCTL 0x02
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# define CFGCTL_WAITKEY __BIT(1)
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#define IT8712_LDN 0x07
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#define IT8712_CHIPID1 0x20
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#define IT8712_CHIPID2 0x21
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#define IT8712_CSCV 0x22
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# define CSCV_VERSION __BITS(3,0);
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#define IT8712_CLKSEL 0x23
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#define IT8712_SWSUSPEND 0x24
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#define IT8712_ADDR 0x2e
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#define IT8712_DATA 0x2f
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static int gemini_lpc_match(struct device *, struct cfdata *, void *);
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static void gemini_lpc_attach(struct device *, struct device *, void *);
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static int gemini_lpc_search(device_t, cfdata_t, const int *, void *);
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static int gemini_lpc_busprint(void *, const char *);
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static uint8_t it8712_pnp_read(lpctag_t, int, uint);
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static void it8712_pnp_write(lpctag_t, int, uint, uint8_t);
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static void it8712_pnp_enter(lpctag_t);
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static void it8712_pnp_exit(lpctag_t);
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CFATTACH_DECL_NEW(lpc, sizeof(struct gemini_lpc_softc),
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gemini_lpc_match, gemini_lpc_attach, NULL, NULL);
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static gemini_lpc_bus_ops_t gemini_lpc_bus_ops = {
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it8712_pnp_read,
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it8712_pnp_write,
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it8712_pnp_enter,
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it8712_pnp_exit,
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gemini_lpchc_intr_establish,
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gemini_lpchc_intr_disestablish,
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};
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static int
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gemini_lpc_match(struct device *parent, struct cfdata *cf, void *aux)
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{
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struct gemini_lpc_attach_args *lpc = aux;
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if (lpc->lpc_addr == LPCCF_ADDR_DEFAULT)
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panic("lpc must have addr specified in config.");
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return 1;
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}
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static void
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gemini_lpc_attach(struct device *parent, struct device *self, void *aux)
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{
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gemini_lpc_softc_t *sc = device_private(self);
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struct gemini_lpchc_attach_args *lpchc = aux;
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bus_space_tag_t iot;
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bus_space_handle_t ioh;
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uint8_t id1, id2, vers, clk, susp;
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sc->sc_addr = lpchc->lpchc_addr;
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#if 0
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sc->sc_size = lpchc->lpchc_size;
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#else
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/*
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* we just map the configuration registers
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* child devices can map their own I/O
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*/
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sc->sc_size = 4096;
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#endif
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iot = lpchc->lpchc_iot;
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if (bus_space_map(iot, sc->sc_addr, sc->sc_size, 0, &ioh))
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panic("%s: Cannot map registers", device_xname(self));
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sc->sc_iot = iot;
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sc->sc_ioh = ioh;
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it8712_pnp_enter(sc);
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id1 = it8712_pnp_read(sc, GEMINI_LPC_LDN_ALL, IT8712_CHIPID1);
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id2 = it8712_pnp_read(sc, GEMINI_LPC_LDN_ALL, IT8712_CHIPID2);
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vers = it8712_pnp_read(sc, GEMINI_LPC_LDN_ALL, IT8712_CSCV);
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vers &= CSCV_VERSION;
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clk = it8712_pnp_read(sc, GEMINI_LPC_LDN_ALL, IT8712_CLKSEL);
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susp = it8712_pnp_read(sc, GEMINI_LPC_LDN_ALL, IT8712_SWSUSPEND);
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it8712_pnp_exit(sc);
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aprint_normal("\n%s: chip ID %x%x, version %d",
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device_xname(self), id1, id2, vers);
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aprint_normal("\n%s: clksel %#x, susp %#x ",
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device_xname(self), clk, susp);
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sc->sc_lpchctag = lpchc->lpchc_tag;
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aprint_normal("\n");
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aprint_naive("\n");
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/*
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* attach the rest of our devices
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*/
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config_search_ia(gemini_lpc_search, self, "lpc", NULL);
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}
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static int
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gemini_lpc_search(device_t parent, cfdata_t cf, const int *ldesc, void *aux)
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{
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gemini_lpc_softc_t *sc = device_private(parent);
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gemini_lpc_attach_args_t lpc;
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lpc.lpc_ldn = cf->cf_loc[LPCCF_LDN];
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lpc.lpc_addr = cf->cf_loc[LPCCF_ADDR];
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lpc.lpc_size = cf->cf_loc[LPCCF_SIZE];
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lpc.lpc_intr = cf->cf_loc[LPCCF_INTR];
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lpc.lpc_iot = sc->sc_iot;
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lpc.lpc_tag = sc;
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lpc.lpc_base = sc->sc_addr;
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lpc.lpc_intrtag = sc->sc_lpchctag;
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lpc.lpc_bus_ops = &gemini_lpc_bus_ops;
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if (config_match(parent, cf, &lpc)) {
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config_attach(parent, cf, &lpc, gemini_lpc_busprint);
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return 0; /* love it */
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}
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return UNCONF; /* hate it */
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}
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static int
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gemini_lpc_busprint(void *aux, const char *name)
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{
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struct gemini_lpc_attach_args *lpc = aux;
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if (lpc->lpc_ldn != LPCCF_LDN_DEFAULT)
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aprint_normal(" ldn %d", lpc->lpc_ldn);
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if (lpc->lpc_addr != LPCCF_ADDR_DEFAULT)
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aprint_normal(" addr %#lx", lpc->lpc_addr);
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if (lpc->lpc_size != LPCCF_SIZE_DEFAULT)
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aprint_normal(" size %#lx", lpc->lpc_size);
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if (lpc->lpc_intr != LPCCF_INTR_DEFAULT)
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aprint_normal(" intr %d", lpc->lpc_intr);
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return UNCONF;
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}
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/*
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* LPC bus ops
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*/
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static uint8_t
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it8712_pnp_read(lpctag_t tag, int ldn, uint index)
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{
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gemini_lpc_softc_t *sc = tag;
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bus_space_tag_t iot = sc->sc_iot;
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bus_space_handle_t ioh = sc->sc_ioh;
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if (ldn != GEMINI_LPC_LDN_ALL) {
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bus_space_write_1(iot, ioh, IT8712_ADDR, IT8712_LDN);
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bus_space_write_1(iot, ioh, IT8712_DATA, ldn);
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}
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bus_space_write_1(iot, ioh, IT8712_ADDR, index);
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return bus_space_read_1(iot, ioh, IT8712_DATA);
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}
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static void
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it8712_pnp_write(lpctag_t tag, int ldn, uint index, uint8_t val)
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{
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gemini_lpc_softc_t *sc = tag;
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bus_space_tag_t iot = sc->sc_iot;
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bus_space_handle_t ioh = sc->sc_ioh;
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if (ldn != GEMINI_LPC_LDN_ALL) {
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bus_space_write_1(iot, ioh, IT8712_ADDR, IT8712_LDN);
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bus_space_write_1(iot, ioh, IT8712_DATA, ldn);
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}
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bus_space_write_1(iot, ioh, IT8712_ADDR, index);
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bus_space_write_1(iot, ioh, IT8712_DATA, val);
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}
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static void
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it8712_pnp_enter(lpctag_t tag)
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{
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gemini_lpc_softc_t *sc = tag;
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bus_space_tag_t iot = sc->sc_iot;
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bus_space_handle_t ioh = sc->sc_ioh;
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bus_space_write_1(iot, ioh, IT8712_ADDR, 0x87);
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bus_space_write_1(iot, ioh, IT8712_ADDR, 0x01);
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bus_space_write_1(iot, ioh, IT8712_ADDR, 0x55);
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bus_space_write_1(iot, ioh, IT8712_ADDR, 0x55);
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}
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static void
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it8712_pnp_exit(lpctag_t tag)
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{
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gemini_lpc_softc_t *sc = tag;
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bus_space_tag_t iot = sc->sc_iot;
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bus_space_handle_t ioh = sc->sc_ioh;
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bus_space_write_1(iot, ioh, IT8712_ADDR, IT8712_CFGCTL);
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bus_space_write_1(iot, ioh, IT8712_DATA, CFGCTL_WAITKEY);
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}
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232
sys/arch/arm/gemini/gemini_lpchc.c
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232
sys/arch/arm/gemini/gemini_lpchc.c
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/* $NetBSD: gemini_lpchc.c,v 1.1 2008/11/09 09:15:42 cliff Exp $ */
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/*
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* GEMINI LPC Host Controller
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*/
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#include "opt_gemini.h"
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#include "locators.h"
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#include <sys/cdefs.h>
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__KERNEL_RCSID(0, "$NetBSD: gemini_lpchc.c,v 1.1 2008/11/09 09:15:42 cliff Exp $");
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#include <sys/param.h>
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#include <sys/callout.h>
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#include <sys/cdefs.h>
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#include <sys/device.h>
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#include <sys/kernel.h>
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#include <sys/systm.h>
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#include <sys/malloc.h>
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#include <machine/param.h>
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#include <machine/bus.h>
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#include <arm/gemini/gemini_lpchcvar.h>
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#include <arm/gemini/gemini_lpcvar.h>
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#include <arm/gemini/gemini_reg.h>
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static inline void
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gemini_lpchc_sirq_cfg(bus_space_tag_t iot, bus_space_handle_t ioh,
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bus_size_t offset, uint32_t bit, boolean_t doset)
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{
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uint32_t r;
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r = bus_space_read_4(iot, ioh, offset);
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if (doset)
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r |= bit;
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else
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r &= ~bit;
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bus_space_write_4(iot, ioh, offset, r);
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}
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static inline void
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gemini_lpchc_sirq_ack(bus_space_tag_t iot, bus_space_handle_t ioh,
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uint32_t bit)
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{
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uint32_t r;
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r = bus_space_read_4(iot, ioh, GEMINI_LPCHC_SERIRQSTS);
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r &= bit;
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if (r != 0)
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bus_space_write_4(iot, ioh, GEMINI_LPCHC_SERIRQSTS, r);
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}
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static inline void
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gemini_lpchc_sirq_disable(bus_space_tag_t iot, bus_space_handle_t ioh)
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{
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uint32_t r;
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r = bus_space_read_4(iot, ioh, GEMINI_LPCHC_IRQCTL);
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r &= ~LPCHC_IRQCTL_SIRQEN;
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bus_space_write_4(iot, ioh, GEMINI_LPCHC_IRQCTL, r);
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}
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static inline void
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gemini_lpchc_sirq_enable(bus_space_tag_t iot, bus_space_handle_t ioh)
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{
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uint32_t r;
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r = bus_space_read_4(iot, ioh, GEMINI_LPCHC_IRQCTL);
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r |= LPCHC_IRQCTL_SIRQEN;
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r |= LPCHC_IRQCTL_SIRQMS; /* XXX "continuous mode" */
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r |= IRQCTL_SIRQFW_8; /* XXX SIRW Frame Width 8 clocks */
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bus_space_write_4(iot, ioh, GEMINI_LPCHC_IRQCTL, r);
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#if 0
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delay(10); /* wait 1 serial IRQ cycle */
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r &= ~LPCHC_IRQCTL_SIRQMS; /* XXX "quiet mode" */
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bus_space_write_4(iot, ioh, GEMINI_LPCHC_IRQCTL, r);
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#endif
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}
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static inline void
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gemini_lpchc_intrq_init(gemini_lpchc_softc_t *sc)
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{
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SIMPLEQ_INIT(&sc->sc_intrq);
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}
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static inline int
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gemini_lpchc_intrq_empty(gemini_lpchc_softc_t *sc)
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{
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return SIMPLEQ_EMPTY(&sc->sc_intrq);
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}
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static inline void *
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gemini_lpchc_intrq_insert(gemini_lpchc_softc_t *sc, int (*func)(void *),
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void *arg, uint32_t bit, boolean_t isedge)
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{
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gemini_lpchc_intrq_t *iqp;
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iqp = malloc(sizeof(*iqp), M_DEVBUF, M_NOWAIT|M_ZERO);
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if (iqp == NULL) {
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printf("gemini_lpchc_intrq_insert: malloc failed\n");
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return NULL;
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}
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iqp->iq_func = func;
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iqp->iq_arg = arg;
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iqp->iq_bit = bit;
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iqp->iq_isedge = isedge;
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SIMPLEQ_INSERT_TAIL(&sc->sc_intrq, iqp, iq_q);
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return (void *)iqp;
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}
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static inline void
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gemini_lpchc_intrq_remove(gemini_lpchc_softc_t *sc, void *cookie)
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{
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gemini_lpchc_intrq_t *iqp;
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SIMPLEQ_FOREACH(iqp, &sc->sc_intrq, iq_q) {
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if ((void *)iqp == cookie) {
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SIMPLEQ_REMOVE(&sc->sc_intrq,
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iqp, gemini_lpchc_intrq, iq_q);
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free(iqp, M_DEVBUF);
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return;
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}
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}
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}
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static inline int
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gemini_lpchc_intrq_dispatch(gemini_lpchc_softc_t *sc)
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{
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gemini_lpchc_intrq_t *iqp;
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uint32_t r;
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int rv = 0;
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r = bus_space_read_4(sc->sc_iot, sc->sc_ioh, GEMINI_LPCHC_SERIRQSTS);
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r &= ~LPCHC_SERIRQSTS_RESV;
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SIMPLEQ_FOREACH(iqp, &sc->sc_intrq, iq_q) {
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if ((r & iqp->iq_bit) != 0) {
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if (iqp->iq_isedge) {
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gemini_lpchc_sirq_ack(sc->sc_iot, sc->sc_ioh,
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iqp->iq_bit);
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}
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rv |= (*iqp->iq_func)(iqp->iq_arg);
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}
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}
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return (rv != 0);
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}
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void
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gemini_lpchc_init(lpcintrtag_t tag)
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{
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gemini_lpchc_softc_t *sc = tag;
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uint32_t r;
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gemini_lpchc_intrq_init(sc);
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r = bus_space_read_4(sc->sc_iot, sc->sc_ioh, GEMINI_LPCHC_CSR);
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r |= LPCHC_CSR_BEN;
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bus_space_write_4(sc->sc_iot, sc->sc_ioh, GEMINI_LPCHC_CSR, r);
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}
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void *
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gemini_lpchc_intr_establish(lpcintrtag_t tag, uint irq,
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int ipl, int type, int (*func)(void *), void *arg)
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{
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gemini_lpchc_softc_t *sc = tag;
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bus_space_tag_t iot = sc->sc_iot;
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bus_space_handle_t ioh = sc->sc_ioh;
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uint32_t bit;
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boolean_t isedge;
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boolean_t ishigh;
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void *ih;
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isedge = ((type == IST_EDGE_RISING) || (type == IST_EDGE_FALLING));
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ishigh = ((type == IST_EDGE_RISING) || (type == IST_LEVEL_HIGH));
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if (irq >= GEMINI_LPCHC_NSERIRQ) {
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printf("%s: bad irq %d\n", __FUNCTION__, irq);
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return NULL;
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}
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#if 0
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bit = 1 << irq;
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#else
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bit = (1 << GEMINI_LPCHC_NSERIRQ) -1; /* XXX */
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#endif
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/* set IRQ type */
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gemini_lpchc_sirq_cfg(iot, ioh, GEMINI_LPCHC_SERIRQTYP,
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bit, isedge);
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/* set IRQ polarity */
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gemini_lpchc_sirq_cfg(iot, ioh, GEMINI_LPCHC_SERIRQPOLARITY,
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bit, ishigh);
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/* ack a-priori edge status */
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if (isedge)
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gemini_lpchc_sirq_ack(iot, ioh, bit);
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if (gemini_lpchc_intrq_empty(sc))
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gemini_lpchc_sirq_enable(iot, ioh);
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|
||||
ih = gemini_lpchc_intrq_insert(sc, func, arg, bit, isedge);
|
||||
if (ih == NULL)
|
||||
if (gemini_lpchc_intrq_empty(sc))
|
||||
gemini_lpchc_sirq_disable(iot, ioh);
|
||||
|
||||
return ih;
|
||||
}
|
||||
|
||||
void
|
||||
gemini_lpchc_intr_disestablish(lpcintrtag_t tag, void *ih)
|
||||
{
|
||||
gemini_lpchc_softc_t *sc = tag;
|
||||
|
||||
gemini_lpchc_intrq_remove(sc, ih);
|
||||
if (gemini_lpchc_intrq_empty(sc))
|
||||
gemini_lpchc_sirq_disable(sc->sc_iot, sc->sc_ioh);
|
||||
}
|
||||
|
||||
int
|
||||
gemini_lpchc_intr(void *arg)
|
||||
{
|
||||
gemini_lpchc_softc_t *sc = arg;
|
||||
int rv;
|
||||
|
||||
printf("%s: enter\n", __FUNCTION__);
|
||||
rv = gemini_lpchc_intrq_dispatch(sc);
|
||||
printf("%s: exit\n", __FUNCTION__);
|
||||
|
||||
return rv;
|
||||
}
|
||||
|
||||
46
sys/arch/arm/gemini/gemini_lpchcvar.h
Normal file
46
sys/arch/arm/gemini/gemini_lpchcvar.h
Normal file
@ -0,0 +1,46 @@
|
||||
/* $NetBSD: gemini_lpchcvar.h,v 1.1 2008/11/09 09:15:42 cliff Exp $ */
|
||||
|
||||
#ifndef _ARM_GEMINI_LPHCVAR_H
|
||||
#define _ARM_GEMINI_LPHCVAR_H
|
||||
|
||||
#include <sys/types.h>
|
||||
#include <sys/device.h>
|
||||
#include <machine/bus.h>
|
||||
#include <arch/arm/gemini/gemini_lpcvar.h>
|
||||
|
||||
|
||||
typedef struct gemini_lpchc_attach_args {
|
||||
void *lpchc_tag;
|
||||
bus_space_tag_t lpchc_iot;
|
||||
bus_addr_t lpchc_addr;
|
||||
bus_size_t lpchc_size;
|
||||
} gemini_lpchc_attach_args_t;
|
||||
|
||||
typedef struct gemini_lpchc_intrq {
|
||||
SIMPLEQ_ENTRY(gemini_lpchc_intrq) iq_q;
|
||||
int (*iq_func)(void *);
|
||||
void *iq_arg;
|
||||
uint32_t iq_bit;
|
||||
boolean_t iq_isedge;
|
||||
} gemini_lpchc_intrq_t;
|
||||
|
||||
typedef struct gemini_lpchc_softc {
|
||||
struct device sc_dev;
|
||||
bus_addr_t sc_addr;
|
||||
bus_size_t sc_size;
|
||||
bus_space_tag_t sc_iot;
|
||||
bus_space_handle_t sc_ioh;
|
||||
int sc_intr;
|
||||
void *sc_ih;
|
||||
SIMPLEQ_HEAD(, gemini_lpchc_intrq) sc_intrq;
|
||||
} gemini_lpchc_softc_t;
|
||||
|
||||
void gemini_lpchc_init(lpcintrtag_t);
|
||||
void *gemini_lpchc_intr_establish(lpcintrtag_t, uint, int, int,
|
||||
int (*)(void *), void *);
|
||||
void gemini_lpchc_intr_disestablish(lpcintrtag_t, void *);
|
||||
int gemini_lpchc_intr(void *);
|
||||
|
||||
|
||||
|
||||
#endif /* _ARM_GEMINI_LPHCVAR_H */
|
||||
53
sys/arch/arm/gemini/gemini_lpcvar.h
Normal file
53
sys/arch/arm/gemini/gemini_lpcvar.h
Normal file
@ -0,0 +1,53 @@
|
||||
/* $NetBSD: gemini_lpcvar.h,v 1.1 2008/11/09 09:15:42 cliff Exp $ */
|
||||
|
||||
#ifndef _ARM_GEMINI_LPCVAR_H
|
||||
#define _ARM_GEMINI_LPCVAR_H
|
||||
|
||||
#include <sys/types.h>
|
||||
#include <sys/device.h>
|
||||
#include <machine/bus.h>
|
||||
|
||||
#define GEMINI_LPC_LDN_ALL -1 /* "global" LDN */
|
||||
|
||||
typedef void * lpctag_t;
|
||||
typedef void * lpcintrtag_t;
|
||||
|
||||
typedef struct gemini_lpc_bus_ops {
|
||||
uint8_t (*lpc_pnp_read)(lpctag_t, int, uint);
|
||||
void (*lpc_pnp_write)(lpctag_t, int, uint, uint8_t);
|
||||
void (*lpc_pnp_enter)(lpctag_t);
|
||||
void (*lpc_pnp_exit)(lpctag_t);
|
||||
void *(*lpc_intr_establish)(lpcintrtag_t,
|
||||
uint, int, int, int (*)(void *), void *);
|
||||
void (*lpc_intr_diestablish)(lpcintrtag_t, void *);
|
||||
} gemini_lpc_bus_ops_t;
|
||||
|
||||
typedef struct gemini_lpc_attach_args {
|
||||
void *lpc_intrtag;
|
||||
void *lpc_tag;
|
||||
uint lpc_ldn;
|
||||
bus_addr_t lpc_base;
|
||||
bus_addr_t lpc_addr;
|
||||
bus_size_t lpc_size;
|
||||
uint lpc_intr;
|
||||
bus_space_tag_t lpc_iot;
|
||||
gemini_lpc_bus_ops_t *lpc_bus_ops;
|
||||
} gemini_lpc_attach_args_t;
|
||||
|
||||
typedef struct gemini_lpc_softc {
|
||||
struct device sc_dev;
|
||||
bus_addr_t sc_addr;
|
||||
bus_size_t sc_size;
|
||||
int sc_intr;
|
||||
bus_space_tag_t sc_iot;
|
||||
bus_space_handle_t sc_ioh;
|
||||
void *sc_lpchctag;
|
||||
} gemini_lpc_softc_t;
|
||||
|
||||
|
||||
/* la_flags */
|
||||
#define LPC_FL_ENABLED 0x01 /* device is enabled */
|
||||
|
||||
|
||||
|
||||
#endif /* _ARM_GEMINI_LPCVAR_H */
|
||||
215
sys/arch/arm/gemini/lpc_com.c
Normal file
215
sys/arch/arm/gemini/lpc_com.c
Normal file
@ -0,0 +1,215 @@
|
||||
/* $NetBSD: lpc_com.c,v 1.1 2008/11/09 09:15:42 cliff Exp $ */
|
||||
|
||||
/* adapted from:
|
||||
* NetBSD: gemini_com.c,v 1.1 2008/10/24 04:23:18 matt Exp
|
||||
*/
|
||||
|
||||
/*
|
||||
* Based on arch/arm/xscale/pxa2x0_com.c
|
||||
*
|
||||
* Copyright 2003 Wasabi Systems, Inc.
|
||||
* All rights reserved.
|
||||
*
|
||||
* Written by Steve C. Woodford for Wasabi Systems, Inc.
|
||||
*
|
||||
* Redistribution and use in source and binary forms, with or without
|
||||
* modification, are permitted provided that the following conditions
|
||||
* are met:
|
||||
* 1. Redistributions of source code must retain the above copyright
|
||||
* notice, this list of conditions and the following disclaimer.
|
||||
* 2. Redistributions in binary form must reproduce the above copyright
|
||||
* notice, this list of conditions and the following disclaimer in the
|
||||
* documentation and/or other materials provided with the distribution.
|
||||
* 3. All advertising materials mentioning features or use of this software
|
||||
* must display the following acknowledgement:
|
||||
* This product includes software developed for the NetBSD Project by
|
||||
* Wasabi Systems, Inc.
|
||||
* 4. The name of Wasabi Systems, Inc. may not be used to endorse
|
||||
* or promote products derived from this software without specific prior
|
||||
* written permission.
|
||||
*
|
||||
* THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``AS IS'' AND
|
||||
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
|
||||
* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
|
||||
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL WASABI SYSTEMS, INC
|
||||
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
|
||||
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
|
||||
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
|
||||
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
|
||||
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
|
||||
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
|
||||
* POSSIBILITY OF SUCH DAMAGE.
|
||||
*/
|
||||
|
||||
#include <sys/cdefs.h>
|
||||
__KERNEL_RCSID(0, "$NetBSD: lpc_com.c,v 1.1 2008/11/09 09:15:42 cliff Exp $");
|
||||
|
||||
#include "opt_com.h"
|
||||
#include "locators.h"
|
||||
|
||||
#include <sys/param.h>
|
||||
#include <sys/systm.h>
|
||||
#include <sys/device.h>
|
||||
#include <sys/termios.h>
|
||||
#include <sys/callout.h>
|
||||
#include <sys/kernel.h>
|
||||
|
||||
#include <machine/intr.h>
|
||||
#include <machine/bus.h>
|
||||
|
||||
#include <dev/ic/comreg.h>
|
||||
#include <dev/ic/comvar.h>
|
||||
|
||||
#include <arm/gemini/gemini_obiovar.h>
|
||||
#include <arm/gemini/gemini_lpchcvar.h>
|
||||
#include <arm/gemini/gemini_lpcvar.h>
|
||||
#include <arm/gemini/gemini_reg.h>
|
||||
|
||||
#include <arm/gemini/lpc_com.h>
|
||||
|
||||
typedef struct lpc_com_softc {
|
||||
struct com_softc sc_com;
|
||||
bus_addr_t sc_addr;
|
||||
bus_size_t sc_size;
|
||||
int sc_intr;
|
||||
bus_space_tag_t sc_iot;
|
||||
bus_space_handle_t sc_ioh;
|
||||
struct callout sc_callout;
|
||||
} lpc_com_softc_t;
|
||||
|
||||
static int lpc_com_match(device_t, cfdata_t , void *);
|
||||
static void lpc_com_attach(device_t, device_t, void *);
|
||||
static int lpc_com_intr(void *);
|
||||
static void lpc_com_time(void *);
|
||||
|
||||
CFATTACH_DECL_NEW(lpc_com, sizeof(struct lpc_com_softc),
|
||||
lpc_com_match, lpc_com_attach, NULL, NULL);
|
||||
|
||||
static int
|
||||
lpc_com_match(device_t parent, cfdata_t cf, void *aux)
|
||||
{
|
||||
struct gemini_lpc_attach_args *lpc = aux;
|
||||
gemini_lpc_bus_ops_t *ops;
|
||||
lpctag_t lpctag;
|
||||
bus_space_tag_t iot;
|
||||
bus_space_handle_t ioh;
|
||||
bus_addr_t iobase;
|
||||
int rv;
|
||||
|
||||
if (lpc->lpc_addr == LPCCF_LDN_DEFAULT
|
||||
|| lpc->lpc_addr == LPCCF_ADDR_DEFAULT)
|
||||
panic("lpc_com must have ldn and addr"
|
||||
" in config.");
|
||||
|
||||
if ((lpc->lpc_intr != LPCCF_INTR_DEFAULT) && (lpc->lpc_intr > 0xff))
|
||||
panic("lpc_com: bad intr %d", lpc->lpc_intr);
|
||||
|
||||
if (lpc->lpc_size == LPCCF_SIZE_DEFAULT)
|
||||
lpc->lpc_size = IT8712F_UART_SIZE;
|
||||
|
||||
iobase = lpc->lpc_base + lpc->lpc_addr;
|
||||
if (com_is_console(lpc->lpc_iot, iobase, NULL))
|
||||
return 1;
|
||||
|
||||
lpctag = lpc->lpc_tag;
|
||||
ops = lpc->lpc_bus_ops;
|
||||
(*ops->lpc_pnp_enter)(lpctag);
|
||||
|
||||
/* Activate */
|
||||
(*ops->lpc_pnp_write)(lpctag, lpc->lpc_ldn, 0x30, 0x01);
|
||||
|
||||
/* Set address */
|
||||
(*ops->lpc_pnp_write)(lpctag, lpc->lpc_ldn, 0x60,
|
||||
(lpc->lpc_addr % 0xff00) >> 8);
|
||||
(*ops->lpc_pnp_write)(lpctag, lpc->lpc_ldn, 0x61,
|
||||
(lpc->lpc_addr % 0x00ff) >> 0);
|
||||
|
||||
/* Set Interrupt Level */
|
||||
(*ops->lpc_pnp_write)(lpctag, lpc->lpc_ldn, 0x70, lpc->lpc_intr);
|
||||
|
||||
/* Set Special Configuration Regs */
|
||||
(*ops->lpc_pnp_write)(lpctag, lpc->lpc_ldn, 0xf0, 0x00);
|
||||
#if 0
|
||||
(*ops->lpc_pnp_write)(lpctag, lpc->lpc_ldn, 0xf1, 0x50);
|
||||
#else
|
||||
(*ops->lpc_pnp_write)(lpctag, lpc->lpc_ldn, 0xf1, 0x58); /* LO */
|
||||
#endif
|
||||
(*ops->lpc_pnp_write)(lpctag, lpc->lpc_ldn, 0xf2, 0x00);
|
||||
(*ops->lpc_pnp_write)(lpctag, lpc->lpc_ldn, 0xf3, 0x7f);
|
||||
|
||||
(*ops->lpc_pnp_exit)(lpctag);
|
||||
|
||||
iot = lpc->lpc_iot;
|
||||
if (bus_space_map(iot, iobase, lpc->lpc_size, 0, &ioh))
|
||||
return 0;
|
||||
|
||||
rv = comprobe1(iot, ioh);
|
||||
|
||||
bus_space_unmap(iot, ioh, lpc->lpc_size);
|
||||
|
||||
return rv;
|
||||
}
|
||||
|
||||
static void
|
||||
lpc_com_attach(device_t parent, device_t self, void *aux)
|
||||
{
|
||||
struct lpc_com_softc *sc = device_private(self);
|
||||
struct gemini_lpc_attach_args *lpc = aux;
|
||||
gemini_lpc_bus_ops_t *ops = lpc->lpc_bus_ops;
|
||||
bus_space_tag_t iot;
|
||||
bus_space_handle_t ioh;
|
||||
bus_addr_t iobase;
|
||||
|
||||
sc->sc_com.sc_dev = self;
|
||||
iot = lpc->lpc_iot;
|
||||
iobase = lpc->lpc_base + lpc->lpc_addr;
|
||||
sc->sc_com.sc_frequency = IT8712F_COM_FREQ;
|
||||
sc->sc_com.sc_type = COM_TYPE_NORMAL;
|
||||
|
||||
if (com_is_console(iot, iobase, &ioh) == 0 &&
|
||||
bus_space_map(iot, iobase, lpc->lpc_size, 0, &ioh)) {
|
||||
panic(": can't map registers\n");
|
||||
return;
|
||||
}
|
||||
|
||||
COM_INIT_REGS(sc->sc_com.sc_regs, iot, ioh, iobase);
|
||||
|
||||
com_attach_subr(&sc->sc_com);
|
||||
aprint_naive("\n");
|
||||
|
||||
if (lpc->lpc_intr == LPCCF_INTR_DEFAULT) {
|
||||
/* callout based polliung */
|
||||
callout_init(&sc->sc_callout, 0);
|
||||
callout_setfunc(&sc->sc_callout, lpc_com_time, sc);
|
||||
callout_schedule(&sc->sc_callout, hz/8);
|
||||
aprint_normal("%s: callout polling mode\n", device_xname(self));
|
||||
} else {
|
||||
/* interrupting */
|
||||
#if 0
|
||||
(*ops->lpc_intr_establish)(lpc->lpc_intrtag, lpc->lpc_intr,
|
||||
IPL_SERIAL, IST_LEVEL_HIGH, comintr, &sc->sc_com);
|
||||
#else
|
||||
(*ops->lpc_intr_establish)(lpc->lpc_intrtag, lpc->lpc_intr,
|
||||
IPL_SERIAL, IST_LEVEL_LOW, lpc_com_intr, &sc->sc_com);
|
||||
#endif
|
||||
}
|
||||
}
|
||||
|
||||
int
|
||||
lpc_com_intr(void *arg)
|
||||
{
|
||||
printf(".");
|
||||
return comintr(arg);
|
||||
}
|
||||
|
||||
void
|
||||
lpc_com_time(void *arg)
|
||||
{
|
||||
lpc_com_softc_t *sc = arg;
|
||||
int s;
|
||||
|
||||
s = splserial();
|
||||
(void)comintr(&sc->sc_com);
|
||||
callout_schedule(&sc->sc_callout, hz/8);
|
||||
splx(s);
|
||||
}
|
||||
11
sys/arch/arm/gemini/lpc_com.h
Normal file
11
sys/arch/arm/gemini/lpc_com.h
Normal file
@ -0,0 +1,11 @@
|
||||
/* $NetBSD: lpc_com.h,v 1.1 2008/11/09 09:15:42 cliff Exp $ */
|
||||
|
||||
#ifndef _ARM_GEMINI_LPC_COM_H
|
||||
#define _ARM_GEMINI_LPC_COM_H
|
||||
|
||||
#define IT8712F_UART_SIZE 8
|
||||
|
||||
#define IT8712F_COM_FREQ (24000000 / 13)
|
||||
|
||||
#endif /* _ARM_GEMINI_LPC_COM_H */
|
||||
|
||||
105
sys/arch/arm/gemini/obio_lpchc.c
Normal file
105
sys/arch/arm/gemini/obio_lpchc.c
Normal file
@ -0,0 +1,105 @@
|
||||
/* $NetBSD: obio_lpchc.c,v 1.1 2008/11/09 09:15:42 cliff Exp $ */
|
||||
|
||||
/*
|
||||
* obio attachment for GEMINI LPC Host Controller
|
||||
*/
|
||||
#include "opt_gemini.h"
|
||||
#include "locators.h"
|
||||
|
||||
#include <sys/cdefs.h>
|
||||
__KERNEL_RCSID(0, "$NetBSD: obio_lpchc.c,v 1.1 2008/11/09 09:15:42 cliff Exp $");
|
||||
|
||||
#include <sys/param.h>
|
||||
#include <sys/callout.h>
|
||||
#include <sys/cdefs.h>
|
||||
#include <sys/device.h>
|
||||
#include <sys/kernel.h>
|
||||
#include <sys/systm.h>
|
||||
|
||||
#include <machine/param.h>
|
||||
#include <machine/bus.h>
|
||||
|
||||
#include <arm/gemini/gemini_obiovar.h>
|
||||
#include <arm/gemini/gemini_lpcvar.h>
|
||||
#include <arm/gemini/gemini_lpchcvar.h>
|
||||
#include <arm/gemini/gemini_reg.h>
|
||||
|
||||
static int gemini_lpchc_match(struct device *, struct cfdata *, void *);
|
||||
static void gemini_lpchc_attach(struct device *, struct device *, void *);
|
||||
static int gemini_lpchc_print(void *, const char *);
|
||||
|
||||
CFATTACH_DECL(obio_lpchc, sizeof(struct gemini_lpchc_softc),
|
||||
gemini_lpchc_match, gemini_lpchc_attach, NULL, NULL);
|
||||
|
||||
|
||||
static int
|
||||
gemini_lpchc_match(struct device *parent, struct cfdata *cf, void *aux)
|
||||
{
|
||||
struct obio_attach_args *obio = aux;
|
||||
|
||||
if (obio->obio_addr == OBIOCF_ADDR_DEFAULT)
|
||||
panic("geminilpchc must have addr specified in config.");
|
||||
|
||||
if (obio->obio_addr == GEMINI_LPCHC_BASE)
|
||||
return 1;
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static void
|
||||
gemini_lpchc_attach(struct device *parent, struct device *self, void *aux)
|
||||
{
|
||||
gemini_lpchc_softc_t *sc = device_private(self);
|
||||
struct obio_attach_args *obio = aux;
|
||||
struct gemini_lpchc_attach_args lpchc;
|
||||
uint32_t r;
|
||||
void *ih=NULL;
|
||||
|
||||
sc->sc_addr = obio->obio_addr;
|
||||
sc->sc_size = (obio->obio_size == OBIOCF_SIZE_DEFAULT)
|
||||
? GEMINI_LPCHC_SIZE : obio->obio_size;
|
||||
|
||||
sc->sc_iot = obio->obio_iot;
|
||||
|
||||
if (bus_space_map(sc->sc_iot, sc->sc_addr, sc->sc_size, 0, &sc->sc_ioh))
|
||||
panic("%s: Cannot map registers", device_xname(self));
|
||||
|
||||
r = bus_space_read_4(sc->sc_iot, sc->sc_ioh, GEMINI_LPCHC_ID);
|
||||
aprint_normal("\n%s: device %d, rev %#x ",
|
||||
device_xname(self), _LPCHC_ID_DEVICE(r), _LPCHC_ID_REV(r));
|
||||
|
||||
|
||||
sc->sc_intr = obio->obio_intr;
|
||||
if (obio->obio_intr != OBIOCF_INTR_DEFAULT) {
|
||||
ih = intr_establish(obio->obio_intr, IPL_SERIAL,
|
||||
IST_LEVEL_HIGH, gemini_lpchc_intr, sc);
|
||||
if (ih == NULL)
|
||||
panic("%s: cannot register intr %d",
|
||||
device_xname(self), obio->obio_intr);
|
||||
}
|
||||
sc->sc_ih = ih;
|
||||
|
||||
gemini_lpchc_init(sc);
|
||||
|
||||
aprint_normal("\n");
|
||||
aprint_naive("\n");
|
||||
|
||||
lpchc.lpchc_iot = obio->obio_iot;
|
||||
lpchc.lpchc_addr = GEMINI_LPCIO_BASE; /* XXX sc_addr+offset */
|
||||
lpchc.lpchc_size = LPCCF_SIZE_DEFAULT; /* XXX placeholder */
|
||||
lpchc.lpchc_tag = sc;
|
||||
|
||||
(void)config_found_ia(&sc->sc_dev, "lpcbus", &lpchc,
|
||||
gemini_lpchc_print);
|
||||
}
|
||||
|
||||
int
|
||||
gemini_lpchc_print(void *aux, const char *name)
|
||||
{
|
||||
struct gemini_lpchc_attach_args *lpchc = aux;
|
||||
|
||||
if (lpchc->lpchc_addr != LPCCF_ADDR_DEFAULT)
|
||||
aprint_normal(" addr %#lx", lpchc->lpchc_addr);
|
||||
|
||||
return UNCONF;
|
||||
}
|
||||
Loading…
Reference in New Issue
Block a user