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imx31lk_pcic.c revision 1.1.24.1
      1  1.1.24.1  yamt /*	$Id: imx31lk_pcic.c,v 1.1.24.1 2008/05/16 02:22:13 yamt Exp $	*/
      2  1.1.24.1  yamt /*	$NetBSD: imx31lk_pcic.c,v 1.1.24.1 2008/05/16 02:22:13 yamt Exp $	*/
      3  1.1.24.1  yamt /*	$OpenBSD: pxapcic.c,v 1.1 2005/07/01 23:51:55 uwe Exp $	*/
      4  1.1.24.1  yamt 
      5  1.1.24.1  yamt /*
      6  1.1.24.1  yamt  * Copyright (c) 2005 Uwe Stuehler <uwe (at) bsdx.de>
      7  1.1.24.1  yamt  *
      8  1.1.24.1  yamt  * Permission to use, copy, modify, and distribute this software for any
      9  1.1.24.1  yamt  * purpose with or without fee is hereby granted, provided that the above
     10  1.1.24.1  yamt  * copyright notice and this permission notice appear in all copies.
     11  1.1.24.1  yamt  *
     12  1.1.24.1  yamt  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
     13  1.1.24.1  yamt  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
     14  1.1.24.1  yamt  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
     15  1.1.24.1  yamt  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
     16  1.1.24.1  yamt  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
     17  1.1.24.1  yamt  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
     18  1.1.24.1  yamt  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
     19  1.1.24.1  yamt  */
     20  1.1.24.1  yamt 
     21  1.1.24.1  yamt #include <sys/cdefs.h>
     22  1.1.24.1  yamt __KERNEL_RCSID(0, "$Id: imx31lk_pcic.c,v 1.1.24.1 2008/05/16 02:22:13 yamt Exp $");
     23  1.1.24.1  yamt 
     24  1.1.24.1  yamt #include <sys/param.h>
     25  1.1.24.1  yamt #include <sys/systm.h>
     26  1.1.24.1  yamt #include <sys/device.h>
     27  1.1.24.1  yamt 
     28  1.1.24.1  yamt #include <machine/intr.h>
     29  1.1.24.1  yamt #include <machine/bus.h>
     30  1.1.24.1  yamt 
     31  1.1.24.1  yamt #include <uvm/uvm.h>
     32  1.1.24.1  yamt 
     33  1.1.24.1  yamt #ifdef NOTYET
     34  1.1.24.1  yamt #include <arch/arm/imx/imx_emifs.h>
     35  1.1.24.1  yamt #include <arch/arm/imx/imx_gpio.h>
     36  1.1.24.1  yamt #endif
     37  1.1.24.1  yamt #include <arch/arm/imx/imx31var.h>
     38  1.1.24.1  yamt #include <arch/arm/imx/imx_pcic.h>
     39  1.1.24.1  yamt 
     40  1.1.24.1  yamt 
     41  1.1.24.1  yamt static int	imx31lk_pcic_match(struct device *, struct cfdata *, void *);
     42  1.1.24.1  yamt static void	imx31lk_pcic_attach(struct device *, struct device *, void *);
     43  1.1.24.1  yamt 
     44  1.1.24.1  yamt CFATTACH_DECL(imx31lk_pcic, sizeof(struct imx_pcic_softc),
     45  1.1.24.1  yamt 	imx31lk_pcic_match, imx31lk_pcic_attach, NULL, NULL);
     46  1.1.24.1  yamt 
     47  1.1.24.1  yamt static void	imx31lk_pcic_socket_setup(struct imx_pcic_socket *);
     48  1.1.24.1  yamt static u_int	imx31lk_pcic_read(struct imx_pcic_socket *, int);
     49  1.1.24.1  yamt static void	imx31lk_pcic_write(struct imx_pcic_socket *, int, u_int);
     50  1.1.24.1  yamt static void	imx31lk_pcic_set_power(struct imx_pcic_socket *, int);
     51  1.1.24.1  yamt static void	imx31lk_pcic_clear_intr(struct imx_pcic_socket *);
     52  1.1.24.1  yamt static void 	*imx31lk_pcic_intr_establish(struct imx_pcic_socket *, int,
     53  1.1.24.1  yamt 		    int (*)(void *), void *);
     54  1.1.24.1  yamt static void	imx31lk_pcic_intr_disestablish(struct imx_pcic_socket *, void *);
     55  1.1.24.1  yamt 
     56  1.1.24.1  yamt struct imx_pcic_tag imx31lk_pcic_functions = {
     57  1.1.24.1  yamt 	imx31lk_pcic_read,
     58  1.1.24.1  yamt 	imx31lk_pcic_write,
     59  1.1.24.1  yamt 	imx31lk_pcic_set_power,
     60  1.1.24.1  yamt 	imx31lk_pcic_clear_intr,
     61  1.1.24.1  yamt 	imx31lk_pcic_intr_establish,
     62  1.1.24.1  yamt 	imx31lk_pcic_intr_disestablish
     63  1.1.24.1  yamt };
     64  1.1.24.1  yamt 
     65  1.1.24.1  yamt static int
     66  1.1.24.1  yamt imx31lk_pcic_match(struct device *parent, struct cfdata *cf, void *aux)
     67  1.1.24.1  yamt {
     68  1.1.24.1  yamt 
     69  1.1.24.1  yamt 	return 1;	/* XXX */
     70  1.1.24.1  yamt }
     71  1.1.24.1  yamt 
     72  1.1.24.1  yamt static void
     73  1.1.24.1  yamt imx31lk_pcic_attach(struct device *parent, struct device *self, void *aux)
     74  1.1.24.1  yamt {
     75  1.1.24.1  yamt 	struct imx_pcic_softc *sc = (struct imx_pcic_softc *)self;
     76  1.1.24.1  yamt 	struct aips_attach_args * const aipsa = aux;
     77  1.1.24.1  yamt 
     78  1.1.24.1  yamt printf("\n");
     79  1.1.24.1  yamt printf("imx_iot %p\n", aipsa->aipsa_memt);
     80  1.1.24.1  yamt printf("imx_addr %lx\n", aipsa->aipsa_addr);
     81  1.1.24.1  yamt printf("imx_size %lx\n", aipsa->aipsa_size);
     82  1.1.24.1  yamt printf("imx_intr %d\n", aipsa->aipsa_intr);
     83  1.1.24.1  yamt 
     84  1.1.24.1  yamt 	sc->sc_pa = aipsa->aipsa_addr;
     85  1.1.24.1  yamt 	sc->sc_iot = aipsa->aipsa_memt;
     86  1.1.24.1  yamt 
     87  1.1.24.1  yamt 	sc->sc_nslots = 1;
     88  1.1.24.1  yamt #ifdef NOTYET
     89  1.1.24.1  yamt 	sc->sc_irqpin[0] = aa->emifs_intr;	/* XXX */
     90  1.1.24.1  yamt 	sc->sc_irqcfpin[0] = -1;		/* XXX */
     91  1.1.24.1  yamt #endif
     92  1.1.24.1  yamt 
     93  1.1.24.1  yamt 	sc->sc_flags |= PPF_REVERSE_ORDER;
     94  1.1.24.1  yamt 
     95  1.1.24.1  yamt 	imx_pcic_attach_common(sc, &imx31lk_pcic_socket_setup);
     96  1.1.24.1  yamt }
     97  1.1.24.1  yamt 
     98  1.1.24.1  yamt static void
     99  1.1.24.1  yamt imx31lk_pcic_socket_setup(struct imx_pcic_socket *so)
    100  1.1.24.1  yamt {
    101  1.1.24.1  yamt 	struct imx_pcic_softc *sc;
    102  1.1.24.1  yamt 	bus_addr_t pa;
    103  1.1.24.1  yamt 	bus_size_t size = 0x2000;		/* XXX */
    104  1.1.24.1  yamt 	bus_space_tag_t iot;
    105  1.1.24.1  yamt 	bus_space_handle_t imx31lkh;
    106  1.1.24.1  yamt 	int error;
    107  1.1.24.1  yamt 
    108  1.1.24.1  yamt 	sc = so->sc;
    109  1.1.24.1  yamt 	iot = sc->sc_iot;
    110  1.1.24.1  yamt 
    111  1.1.24.1  yamt 	if (so->socket != 0)
    112  1.1.24.1  yamt 		panic("%s: CF slot %d not supported", sc->sc_dev.dv_xname, so->socket);
    113  1.1.24.1  yamt 
    114  1.1.24.1  yamt 	pa = sc->sc_pa;
    115  1.1.24.1  yamt 
    116  1.1.24.1  yamt 	error = bus_space_map(iot, trunc_page(pa), round_page(size),
    117  1.1.24.1  yamt 	    0, &imx31lkh);
    118  1.1.24.1  yamt 	if (error) {
    119  1.1.24.1  yamt 		panic("%s: failed to map memory %x for imx31lk",
    120  1.1.24.1  yamt 		    sc->sc_dev.dv_xname, (uint32_t)pa);
    121  1.1.24.1  yamt 	}
    122  1.1.24.1  yamt 	imx31lkh += pa - trunc_page(pa);
    123  1.1.24.1  yamt 
    124  1.1.24.1  yamt #ifdef NOTYET
    125  1.1.24.1  yamt 	/* setup */
    126  1.1.24.1  yamt #endif
    127  1.1.24.1  yamt 
    128  1.1.24.1  yamt #ifdef NOTYET
    129  1.1.24.1  yamt 	so->power_capability = PXAPCIC_POWER_3V;
    130  1.1.24.1  yamt 	if (so->socket == 0)
    131  1.1.24.1  yamt 		so->power_capability |= PXAPCIC_POWER_5V;
    132  1.1.24.1  yamt #endif
    133  1.1.24.1  yamt 
    134  1.1.24.1  yamt 	so->pcictag_cookie = (void *)imx31lkh;
    135  1.1.24.1  yamt 	so->pcictag = &imx31lk_pcic_functions;
    136  1.1.24.1  yamt }
    137  1.1.24.1  yamt 
    138  1.1.24.1  yamt static u_int
    139  1.1.24.1  yamt imx31lk_pcic_read(struct imx_pcic_socket *so, int reg)
    140  1.1.24.1  yamt {
    141  1.1.24.1  yamt #ifdef NOTYET
    142  1.1.24.1  yamt 	bus_space_tag_t iot = so->sc->sc_iot;
    143  1.1.24.1  yamt 	bus_space_handle_t ioh = (bus_space_handle_t)so->pcictag_cookie;
    144  1.1.24.1  yamt 	uint16_t csr;
    145  1.1.24.1  yamt 
    146  1.1.24.1  yamt 	csr = bus_space_read_2(iot, ioh, SCOOP_CSR);
    147  1.1.24.1  yamt 
    148  1.1.24.1  yamt 	switch (reg) {
    149  1.1.24.1  yamt 	case PXAPCIC_CARD_STATUS:
    150  1.1.24.1  yamt 		if (csr & SCP_CSR_MISSING)
    151  1.1.24.1  yamt 			return (PXAPCIC_CARD_INVALID);
    152  1.1.24.1  yamt 		else
    153  1.1.24.1  yamt 			return (PXAPCIC_CARD_VALID);
    154  1.1.24.1  yamt 
    155  1.1.24.1  yamt 	case PXAPCIC_CARD_READY:
    156  1.1.24.1  yamt 		return ((bus_space_read_2(iot, ioh, SCOOP_CSR) &
    157  1.1.24.1  yamt 		    SCP_CSR_READY) != 0);
    158  1.1.24.1  yamt 
    159  1.1.24.1  yamt 	default:
    160  1.1.24.1  yamt 		panic("imx31lk_pcic_read: bogus register");
    161  1.1.24.1  yamt 	}
    162  1.1.24.1  yamt 	/*NOTREACHED*/
    163  1.1.24.1  yamt #else
    164  1.1.24.1  yamt 	panic("imx31lk_pcic_read");
    165  1.1.24.1  yamt #endif
    166  1.1.24.1  yamt }
    167  1.1.24.1  yamt 
    168  1.1.24.1  yamt static void
    169  1.1.24.1  yamt imx31lk_pcic_write(struct imx_pcic_socket *so, int reg, u_int val)
    170  1.1.24.1  yamt {
    171  1.1.24.1  yamt #ifdef NOTYET
    172  1.1.24.1  yamt 	bus_space_tag_t iot = so->sc->sc_iot;
    173  1.1.24.1  yamt 	bus_space_handle_t ioh = (bus_space_handle_t)so->pcictag_cookie;
    174  1.1.24.1  yamt 	uint16_t newval;
    175  1.1.24.1  yamt 	int s;
    176  1.1.24.1  yamt 
    177  1.1.24.1  yamt 	s = splhigh();
    178  1.1.24.1  yamt 
    179  1.1.24.1  yamt 	switch (reg) {
    180  1.1.24.1  yamt 	case PXAPCIC_CARD_POWER:
    181  1.1.24.1  yamt 		newval = bus_space_read_2(iot, ioh, SCOOP_CPR);
    182  1.1.24.1  yamt 		newval &= ~(SCP_CPR_PWR | SCP_CPR_3V | SCP_CPR_5V);
    183  1.1.24.1  yamt 
    184  1.1.24.1  yamt 		if (val == PXAPCIC_POWER_3V)
    185  1.1.24.1  yamt 			newval |= (SCP_CPR_PWR | SCP_CPR_3V);
    186  1.1.24.1  yamt 		else if (val == PXAPCIC_POWER_5V)
    187  1.1.24.1  yamt 			newval |= (SCP_CPR_PWR | SCP_CPR_5V);
    188  1.1.24.1  yamt 
    189  1.1.24.1  yamt 		bus_space_write_2(iot, ioh, SCOOP_CPR, newval);
    190  1.1.24.1  yamt 		break;
    191  1.1.24.1  yamt 
    192  1.1.24.1  yamt 	case PXAPCIC_CARD_RESET:
    193  1.1.24.1  yamt 		bus_space_write_2(iot, ioh, SCOOP_CCR,
    194  1.1.24.1  yamt 		    val ? SCP_CCR_RESET : 0);
    195  1.1.24.1  yamt 		break;
    196  1.1.24.1  yamt 
    197  1.1.24.1  yamt 	default:
    198  1.1.24.1  yamt 		panic("imx31lk_pcic_write: bogus register");
    199  1.1.24.1  yamt 	}
    200  1.1.24.1  yamt 
    201  1.1.24.1  yamt 	splx(s);
    202  1.1.24.1  yamt #else
    203  1.1.24.1  yamt 	panic("imx31lk_pcic_write");
    204  1.1.24.1  yamt #endif
    205  1.1.24.1  yamt }
    206  1.1.24.1  yamt 
    207  1.1.24.1  yamt static void
    208  1.1.24.1  yamt imx31lk_pcic_set_power(struct imx_pcic_socket *so, int pwr)
    209  1.1.24.1  yamt {
    210  1.1.24.1  yamt #ifdef NOTYET
    211  1.1.24.1  yamt 	bus_space_tag_t iot = so->sc->sc_iot;
    212  1.1.24.1  yamt 	bus_space_handle_t ioh = (bus_space_handle_t)so->pcictag_cookie;
    213  1.1.24.1  yamt 	u_int16_t reg;
    214  1.1.24.1  yamt 	int s;
    215  1.1.24.1  yamt 
    216  1.1.24.1  yamt 	s = splhigh();
    217  1.1.24.1  yamt 
    218  1.1.24.1  yamt 	switch (pwr) {
    219  1.1.24.1  yamt 	case PXAPCIC_POWER_OFF:
    220  1.1.24.1  yamt #if 0
    221  1.1.24.1  yamt 		/* XXX does this disable power to both sockets? */
    222  1.1.24.1  yamt 		reg = bus_space_read_2(iot, ioh, SCOOP_GPWR);
    223  1.1.24.1  yamt 		bus_space_write_2(iot, ioh, SCOOP_GPWR,
    224  1.1.24.1  yamt 		    reg & ~(1 << SCOOP0_CF_POWER_C3000));
    225  1.1.24.1  yamt #endif
    226  1.1.24.1  yamt 		break;
    227  1.1.24.1  yamt 
    228  1.1.24.1  yamt 	case PXAPCIC_POWER_3V:
    229  1.1.24.1  yamt 	case PXAPCIC_POWER_5V:
    230  1.1.24.1  yamt 		/* XXX */
    231  1.1.24.1  yamt 		if (so->socket == 0) {
    232  1.1.24.1  yamt 			reg = bus_space_read_2(iot, ioh, SCOOP_GPWR);
    233  1.1.24.1  yamt 			bus_space_write_2(iot, ioh, SCOOP_GPWR,
    234  1.1.24.1  yamt 			    reg | (1 << SCOOP0_CF_POWER_C3000));
    235  1.1.24.1  yamt 		}
    236  1.1.24.1  yamt 		break;
    237  1.1.24.1  yamt 
    238  1.1.24.1  yamt 	default:
    239  1.1.24.1  yamt 		splx(s);
    240  1.1.24.1  yamt 		panic("imx31lk_pcic_set_power: bogus power state");
    241  1.1.24.1  yamt 	}
    242  1.1.24.1  yamt 
    243  1.1.24.1  yamt 	splx(s);
    244  1.1.24.1  yamt #else
    245  1.1.24.1  yamt 	panic("imx31lk_pcic_set_power");
    246  1.1.24.1  yamt #endif
    247  1.1.24.1  yamt }
    248  1.1.24.1  yamt 
    249  1.1.24.1  yamt static void
    250  1.1.24.1  yamt imx31lk_pcic_clear_intr(struct imx_pcic_socket *so)
    251  1.1.24.1  yamt {
    252  1.1.24.1  yamt #ifdef NOTYET
    253  1.1.24.1  yamt 	bus_space_tag_t iot = so->sc->sc_iot;
    254  1.1.24.1  yamt 	bus_space_handle_t ioh = (bus_space_handle_t)so->pcictag_cookie;
    255  1.1.24.1  yamt 
    256  1.1.24.1  yamt 	bus_space_write_2(iot, ioh, SCOOP_IRM, 0x00ff);
    257  1.1.24.1  yamt 	bus_space_write_2(iot, ioh, SCOOP_ISR, 0x0000);
    258  1.1.24.1  yamt 	bus_space_write_2(iot, ioh, SCOOP_IRM, 0x0000);
    259  1.1.24.1  yamt #else
    260  1.1.24.1  yamt 	panic("imx31lk_pcic_clear_intr");
    261  1.1.24.1  yamt #endif
    262  1.1.24.1  yamt }
    263  1.1.24.1  yamt 
    264  1.1.24.1  yamt static void *
    265  1.1.24.1  yamt imx31lk_pcic_intr_establish(struct imx_pcic_socket *so, int ipl,
    266  1.1.24.1  yamt     int (*func)(void *), void *arg)
    267  1.1.24.1  yamt {
    268  1.1.24.1  yamt #ifdef NOTYET
    269  1.1.24.1  yamt printf("%s: irqpin %d\n", __FUNCTION__, so->irqpin);
    270  1.1.24.1  yamt 	return (imx_gpio_intr_establish(so->irqpin, IST_EDGE_FALLING,
    271  1.1.24.1  yamt 	    ipl, "pcic", func, arg));
    272  1.1.24.1  yamt #else
    273  1.1.24.1  yamt 	return 0;		/* XXX */
    274  1.1.24.1  yamt #endif
    275  1.1.24.1  yamt }
    276  1.1.24.1  yamt 
    277  1.1.24.1  yamt static void
    278  1.1.24.1  yamt imx31lk_pcic_intr_disestablish(struct imx_pcic_socket *so, void *ih)
    279  1.1.24.1  yamt {
    280  1.1.24.1  yamt 
    281  1.1.24.1  yamt #ifdef NOTYET
    282  1.1.24.1  yamt 	imx_gpio_intr_disestablish(ih);
    283  1.1.24.1  yamt #endif
    284  1.1.24.1  yamt }
    285