233 lines
7.0 KiB
C
233 lines
7.0 KiB
C
/* $NetBSD: m25p.c,v 1.10 2019/08/04 22:13:24 tnn Exp $ */
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/*-
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* Copyright (c) 2006 Urbana-Champaign Independent Media Center.
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* Copyright (c) 2006 Garrett D'Amore.
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* All rights reserved.
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*
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* Portions of this code were written by Garrett D'Amore for the
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* Champaign-Urbana Community Wireless Network Project.
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*
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* Redistribution and use in source and binary forms, with or
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* without modification, are permitted provided that the following
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* conditions are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above
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* copyright notice, this list of conditions and the following
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* disclaimer in the documentation and/or other materials provided
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* with the distribution.
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* 3. All advertising materials mentioning features or use of this
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* software must display the following acknowledgements:
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* This product includes software developed by the Urbana-Champaign
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* Independent Media Center.
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* This product includes software developed by Garrett D'Amore.
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* 4. Urbana-Champaign Independent Media Center's name and Garrett
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* D'Amore's name may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE URBANA-CHAMPAIGN INDEPENDENT
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* MEDIA CENTER AND GARRETT D'AMORE ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE URBANA-CHAMPAIGN INDEPENDENT
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* MEDIA CENTER OR GARRETT D'AMORE BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
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* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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__KERNEL_RCSID(0, "$NetBSD: m25p.c,v 1.10 2019/08/04 22:13:24 tnn 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 <sys/kernel.h>
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#include <dev/sysmon/sysmonvar.h>
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#include <dev/spi/spivar.h>
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#include <dev/spi/spiflash.h>
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/*
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* Device driver for STMicroelectronics M25P Family SPI Flash Devices
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*/
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static int m25p_match(device_t , cfdata_t , void *);
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static void m25p_attach(device_t , device_t , void *);
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static void m25p_doattach(device_t);
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static const char *m25p_getname(void *);
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static struct spi_handle *m25p_gethandle(void *);
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static int m25p_getflags(void *);
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static int m25p_getsize(void *, int);
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struct m25p_softc {
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struct spi_handle *sc_sh;
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const char *sc_name;
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int sc_sizes[SPIFLASH_SIZE_COUNT];
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int sc_flags;
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};
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CFATTACH_DECL_NEW(m25p, sizeof(struct m25p_softc),
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m25p_match, m25p_attach, NULL, NULL);
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static const struct spiflash_hw_if m25p_hw_if = {
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.sf_getname = m25p_getname,
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.sf_gethandle = m25p_gethandle,
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.sf_getsize = m25p_getsize,
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.sf_getflags = m25p_getflags,
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};
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static const struct m25p_info {
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uint8_t sig;
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uint8_t mfgid;
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uint16_t devid;
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const char *name;
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uint16_t size; /* in KB */
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uint16_t sector; /* in KB */
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uint16_t mhz;
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} m25p_infos[] = {
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{ 0x16, 0x20, 0x2017, "STMicro M25P64", 8192, 64 }, /* 64Mbit */
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{ 0x14, 0x20, 0x2015, "STMicro M25P16", 2048, 64 }, /* 16Mbit */
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{ 0x12, 0x20, 0x2013, "STMicro M25P40", 512, 64 }, /* 4Mbit */
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{ 0xc0, 0x20, 0x7117, "STMicro M25PX64", 8192, 64 }, /* 64Mbit */
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{ 0x00, 0x20, 0xBB18, "Numonyx N25Q128", 16384, 64 }, /* 128Mbit */
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{ 0x00, 0xBF, 0x2541, "Microchip SST25VF016B", 2048, 64 }, /* 16Mbit */
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{ 0x00, 0xC2, 0x2011, "Macronix MX25L10", 128, 64 }, /* 1Mbit */
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{ 0x00, 0xC2, 0x2012, "Macronix MX25L20", 256, 64 }, /* 2Mbit */
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{ 0x00, 0xC2, 0x2013, "Macronix MX25L40", 512, 64 }, /* 4Mbit */
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{ 0x00, 0xC2, 0x2014, "Macronix MX25L80", 1024, 64 }, /* 8Mbit */
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{ 0x00, 0xC8, 0x4018, "GigaDevice 25Q127CSIG", 16384, 64 }, /* 128Mbit */
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{ 0x00, 0xEF, 0x3011, "Winbond W25X10", 128, 64 }, /* 1Mbit */
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{ 0x00, 0xEF, 0x3012, "Winbond W25X20", 256, 64 }, /* 2Mbit */
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{ 0x00, 0xEF, 0x3013, "Winbond W25X40", 512, 64 }, /* 4Mbit */
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{ 0x00, 0xEF, 0x3014, "Winbond W25X80", 1024, 64 }, /* 8Mbit */
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{ 0x13, 0xEF, 0x4014, "Winbond W25Q80.V", 1024, 64 }, /* 8Mbit */
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{ 0x14, 0xEF, 0x4015, "Winbond W25Q16.V", 2048, 64 }, /* 16Mbit */
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{ 0x15, 0xEF, 0x4016, "Winbond W25Q32.V", 4096, 64 }, /* 32Mbit */
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{ 0x15, 0xEF, 0x6016, "Winbond W25Q32.W", 4096, 64 }, /* 32Mbit */
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{ 0 }
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};
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static int
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m25p_match(device_t parent, cfdata_t cf, void *aux)
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{
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struct spi_attach_args *sa = aux;
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/* configure for 20MHz, which is the max for normal reads */
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if (spi_configure(sa->sa_handle, SPI_MODE_0, 20000000))
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return 0;
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return 1;
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}
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static void
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m25p_attach(device_t parent, device_t self, void *aux)
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{
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struct m25p_softc *sc = device_private(self);
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struct spi_attach_args *sa = aux;
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sc->sc_sh = sa->sa_handle;
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config_interrupts(self, m25p_doattach);
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}
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static void
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m25p_doattach(device_t self)
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{
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struct m25p_softc *sc = device_private(self);
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const struct m25p_info *info;
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uint8_t buf[4];
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uint8_t cmd;
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uint8_t mfgid;
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uint8_t sig;
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uint16_t devid;
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/* first we try JEDEC ID read */
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cmd = SPIFLASH_CMD_RDJI;
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if (spi_send_recv(sc->sc_sh, 1, &cmd, 3, buf)) {
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aprint_error(": failed to get JEDEC identification\n");
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return;
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}
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mfgid = buf[0];
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devid = ((uint16_t)buf[1] << 8) | buf[2];
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if ((mfgid == 0xff) || (mfgid == 0)) {
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cmd = SPIFLASH_CMD_RDID;
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if (spi_send_recv(sc->sc_sh, 1, &cmd, 4, buf)) {
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aprint_error(": failed to get legacy signature\n");
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return;
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}
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sig = buf[3];
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} else {
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sig = 0;
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}
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/* okay did it match */
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for (info = m25p_infos; info->name; info++) {
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if ((info->mfgid == mfgid) && (info->devid == devid))
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break;
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if ((sig != 0) && (sig == info->sig))
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break;
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}
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if (info->name == NULL) {
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aprint_error(": vendor 0x%02X dev 0x%04X sig 0x%02X not supported\n",
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mfgid, devid, sig);
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return;
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}
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sc->sc_name = info->name;
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sc->sc_sizes[SPIFLASH_SIZE_DEVICE] = info->size * 1024;
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sc->sc_sizes[SPIFLASH_SIZE_ERASE] = info->sector * 1024;
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sc->sc_sizes[SPIFLASH_SIZE_WRITE] = 256;
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sc->sc_sizes[SPIFLASH_SIZE_READ] = -1;
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sc->sc_flags = SPIFLASH_FLAG_FAST_READ;
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aprint_normal_dev(self, "JEDEC ID mfgid:0x%02X, devid:0x%04X",
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mfgid, devid);
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aprint_normal("\n");
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spiflash_attach_mi(&m25p_hw_if, sc, self);
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}
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const char *
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m25p_getname(void *cookie)
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{
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struct m25p_softc *sc = cookie;
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return (sc->sc_name);
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}
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struct spi_handle *
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m25p_gethandle(void *cookie)
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{
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struct m25p_softc *sc = cookie;
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return (sc->sc_sh);
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}
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int
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m25p_getflags(void *cookie)
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{
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struct m25p_softc *sc = cookie;
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return (sc->sc_flags);
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}
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int
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m25p_getsize(void *cookie, int idx)
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{
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struct m25p_softc *sc = cookie;
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if ((idx < 0) || (idx >= SPIFLASH_SIZE_COUNT))
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return -1;
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return (sc->sc_sizes[idx]);
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}
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