diff options
Diffstat (limited to 'sys')
| -rw-r--r-- | sys/conf/files | 2 | ||||
| -rw-r--r-- | sys/dev/isf/isf.c | 740 | ||||
| -rw-r--r-- | sys/dev/isf/isf.h | 94 | ||||
| -rw-r--r-- | sys/dev/isf/isf_nexus.c | 120 | ||||
| -rw-r--r-- | sys/mips/conf/BERI_DE4.hints | 10 | ||||
| -rw-r--r-- | sys/mips/conf/BERI_DE4_MDROOT | 1 | ||||
| -rw-r--r-- | sys/mips/conf/BERI_DE4_SDROOT | 1 |
7 files changed, 968 insertions, 0 deletions
diff --git a/sys/conf/files b/sys/conf/files index 54100daf094b..a95e04564f00 100644 --- a/sys/conf/files +++ b/sys/conf/files @@ -1380,6 +1380,8 @@ dev/iscsi/initiator/isc_cam.c optional iscsi_initiator scbus dev/iscsi/initiator/isc_soc.c optional iscsi_initiator scbus dev/iscsi/initiator/isc_sm.c optional iscsi_initiator scbus dev/iscsi/initiator/isc_subr.c optional iscsi_initiator scbus +dev/isf/isf.c optional isf +dev/isf/isf_nexus.c optional isf dev/isp/isp.c optional isp dev/isp/isp_freebsd.c optional isp dev/isp/isp_library.c optional isp diff --git a/sys/dev/isf/isf.c b/sys/dev/isf/isf.c new file mode 100644 index 000000000000..b3ac080a381f --- /dev/null +++ b/sys/dev/isf/isf.c @@ -0,0 +1,740 @@ +/*- + * Copyright (c) 2012 Robert N. M. Watson + * Copyright (c) 2012 SRI International + * All rights reserved. + * + * This software was developed by SRI International and the University of + * Cambridge Computer Laboratory under DARPA/AFRL contract (FA8750-10-C-0237) + * ("CTSRD"), as part of the DARPA CRASH research programme. + * + * 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. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``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 THE AUTHOR OR CONTRIBUTORS 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> +__FBSDID("$FreeBSD$"); + +#include <sys/param.h> +#include <sys/module.h> +#include <sys/kernel.h> +#include <sys/systm.h> + +#include <sys/bus.h> +#include <sys/conf.h> +#include <sys/endian.h> +#include <sys/bio.h> +#include <sys/kthread.h> +#include <sys/lock.h> +#include <sys/malloc.h> +#include <sys/mutex.h> +#include <sys/rman.h> +#include <sys/taskqueue.h> + +#include <machine/bus.h> +#include <machine/resource.h> + +#include <geom/geom_disk.h> + +#include <dev/isf/isf.h> + +/* Read Mode */ +#define ISF_CMD_RA 0xFF /* Read Array mode */ +#define ISF_CMD_RSR 0x70 /* Read Status Register mode */ +#define ISF_CMD_RDI 0x90 /* Read Device ID/Config Reg mode */ +#define ISF_CMD_RQ 0x98 /* Read Query mode */ +#define ISF_CMD_CSR 0x50 /* Clear Status Register */ + +/* Write Mode */ +#define ISF_CMD_WPS 0x40 /* Word Program Setup */ +#define ISF_CMD_BPS 0xE8 /* Buffered Program Setup */ +#define ISF_CMD_BPC 0xD0 /* Buffered Program Confirm */ + +/* Erase Mode */ +#define ISF_CMD_BES 0x20 /* Block Erase Setup */ +#define ISF_CMD_BEC 0xD0 /* Block Erase Confirm */ + +/* Block Locking/Unlocking */ +#define ISF_CMD_LBS 0x60 /* Lock Block Setup */ +#define ISF_CMD_LB 0x01 /* Lock Block */ +#define ISF_CMD_UB 0xD0 /* Unlock Block */ + +/* + * Read Device Identifier registers. + * + * NOTE: ISF_RDIR_BLC is relative to the block base address. + */ +#define ISF_REG_MC 0x00 /* Manufacture Code */ +#define ISF_REG_ID 0x01 /* Device ID Code */ +#define ISF_REG_BLC 0x02 /* Block Lock Configuration */ +#define ISF_REG_RCR 0x05 /* Read Configuration Register */ + +/* + * Protection Registers + */ +#define ISF_REG_L0 0x80 /* Lock Register 0 */ +#define ISF_REG_FPP 0x81 /* 64-bit Factory Protection Register */ +#define ISF_REG_UPP 0x85 /* 64-bit User Protection Register */ +#define ISF_REG_L1 0x89 /* Lock Register 1 */ +#define ISF_REG_PP1 0x8A /* 128-bit Protection Register 1 */ +#define ISF_REG_PP2 0x92 /* 128-bit Protection Register 2 */ +#define ISF_REG_PP3 0x9A /* 128-bit Protection Register 3 */ +#define ISF_REG_PP4 0xA2 /* 128-bit Protection Register 4 */ +#define ISF_REG_PP5 0xAA /* 128-bit Protection Register 5 */ +#define ISF_REG_PP6 0xB2 /* 128-bit Protection Register 6 */ +#define ISF_REG_PP7 0xBA /* 128-bit Protection Register 7 */ +#define ISF_REG_PP8 0xC2 /* 128-bit Protection Register 8 */ +#define ISF_REG_PP9 0xCA /* 128-bit Protection Register 9 */ +#define ISF_REG_PP10 0xD2 /* 128-bit Protection Register 10 */ +#define ISF_REG_PP11 0xDA /* 128-bit Protection Register 11 */ +#define ISF_REG_PP12 0xE2 /* 128-bit Protection Register 12 */ +#define ISF_REG_PP13 0xEA /* 128-bit Protection Register 13 */ +#define ISF_REG_PP14 0xF2 /* 128-bit Protection Register 14 */ +#define ISF_REG_PP15 0xFA /* 128-bit Protection Register 15 */ +#define ISF_REG_PP16 0x102 /* 128-bit Protection Register 16 */ + +#define ISF_SR_BWS (1 << 0) /* BEFP Status */ +#define ISF_SR_BLS (1 << 1) /* Block-Locked Status */ +#define ISF_SR_PSS (1 << 2) /* Program Suspend Status */ +#define ISF_SR_VPPS (1 << 3) /* Vpp Status */ +#define ISF_SR_PS (1 << 4) /* Program Status */ +#define ISF_SR_ES (1 << 5) /* Erase Status */ +#define ISF_SR_ESS (1 << 6) /* Erase Suspend Status */ +#define ISF_SR_DWS (1 << 7) /* Device Write Status */ +#define ISF_SR_FSC_MASK (ISF_SR_VPPS | ISF_SR_PS | ISF_SR_BLS) + +#define ISF_BUFFER_PROGRAM + +MALLOC_DEFINE(M_ISF, "isf_data", "Intel StrateFlash driver"); +static int isf_debug = 0; + +static struct isf_chips { + uint16_t chip_id; + size_t chip_size; + const char *chip_desc; +} chip_ids[] = { + { 0x8817, 0x0800000, "64-Mbit Top Parameter" }, + { 0x881A, 0x0800000, "64-Mbit Bottom Parameter" }, + { 0x8818, 0x1000000, "128-Mbit Top Parameter" }, + { 0x881B, 0x1000000, "128-Mbit Bottom Parameter" }, + { 0x8919, 0x2000000, "256-Mbit Top Parameter" }, + { 0x891C, 0x2000000, "256-Mbit Bottom Parameter" }, + { 0x8961, 0x2000000, "512-Mbit package (half)" }, + { 0x0000, 0x0000000, NULL } +}; + +static void isf_task(void *arg); + +/* + * Device driver for the Intel StrataFlash NOR flash device. This + * implementation is known to work with 256Mb instances of the device, but may + * also work with other 64/128/512Mb parts without much work. Multiple + * device instances should be used when multiple parts are in the same + * physical package, due to variable block size support in the StrataFlash + * part. + */ + +static uint16_t +isf_read_reg(struct isf_softc *sc, uint16_t reg) +{ + + if (isf_debug) + device_printf(sc->isf_dev, "isf_read_reg(0x%02x)\n", reg); + return (le16toh(bus_read_2(sc->isf_res, reg * 2))); +} + +static uint64_t +isf_read_reg64(struct isf_softc *sc, uint16_t reg) +{ + uint64_t val; + uint16_t *val16 = (uint16_t *)&val; + + if (isf_debug) + device_printf(sc->isf_dev, "isf_read_reg64(0x%02x)\n", reg); + val16[0] = bus_read_2(sc->isf_res, reg * 2); + val16[1] = bus_read_2(sc->isf_res, (reg+1) * 2); + val16[2] = bus_read_2(sc->isf_res, (reg+2) * 2); + val16[3] = bus_read_2(sc->isf_res, (reg+3) * 2); + + return(le64toh(val)); +} + +static uint16_t +isf_read_off(struct isf_softc *sc, off_t off) +{ + + KASSERT(off >= 0, ("%s: negative offset\n", __func__)); + KASSERT(off < sc->isf_disk->d_mediasize, + ("%s: offset out side address space 0x%08jx \n", __func__, + (intmax_t)off)); + + if (isf_debug) + device_printf(sc->isf_dev, "isf_read_off(0x%08jx)\n", + (intmax_t)off); + return (le16toh(bus_read_2(sc->isf_res, off))); +} + +static void +isf_write_cmd(struct isf_softc *sc, off_t off, uint16_t cmd) +{ + + if (isf_debug) + device_printf(sc->isf_dev, "isf_write_cmd(0x%08jx, 0x%02x)\n", + off, cmd); + bus_write_2(sc->isf_res, off, htole16(cmd)); +} + +static uint16_t +isf_read_status(struct isf_softc *sc, off_t off) +{ + + isf_write_cmd(sc, off/2, ISF_CMD_RSR); + return isf_read_off(sc, off); +} + +static void +isf_clear_status(struct isf_softc *sc) +{ + + isf_write_cmd(sc, 0, ISF_CMD_CSR); +} + +static int +isf_full_status_check(struct isf_softc *sc, off_t off) +{ + int error = 0; + uint16_t status; + + status = isf_read_status(sc, off); + if (status & ISF_SR_VPPS) { + device_printf(sc->isf_dev, "Vpp Range Error\n"); + error = EIO; + } else if (status & ISF_SR_PS) { + device_printf(sc->isf_dev, "Program Error\n"); + error = EIO; + } else if (status & ISF_SR_BLS) { + device_printf(sc->isf_dev, "Device Protect Error\n"); + error = EIO; + } + isf_clear_status(sc); + + return(error); +} + +static int +isf_full_erase_status_check(struct isf_softc *sc, off_t off) +{ + int error = 0; + uint16_t status; + + status = isf_read_status(sc, off); + if (status & ISF_SR_VPPS) { + device_printf(sc->isf_dev, "Vpp Range Error\n"); + error = EIO; + } else if (status & (ISF_SR_PS|ISF_SR_ES)) { + device_printf(sc->isf_dev, "Command Sequence Error\n"); + error = EIO; + } else if (status & ISF_SR_ES) { + device_printf(sc->isf_dev, "Block Erase Error\n"); + error = EIO; + } else if (status & ISF_SR_BLS) { + device_printf(sc->isf_dev, "Block Locked Error\n"); + error = EIO; + } + isf_clear_status(sc); + + return(error); +} + +static void +isf_unlock_block(struct isf_softc *sc, off_t off) +{ + + isf_write_cmd(sc, off, ISF_CMD_LBS); + isf_write_cmd(sc, off, ISF_CMD_UB); + isf_write_cmd(sc, off, ISF_CMD_RA); +} + +static void +isf_lock_block(struct isf_softc *sc, off_t off) +{ + + isf_write_cmd(sc, off, ISF_CMD_LBS); + isf_write_cmd(sc, off, ISF_CMD_LB); + isf_write_cmd(sc, off, ISF_CMD_RA); +} + +static void +isf_read(struct isf_softc *sc, off_t off, void *data, size_t len) +{ + + KASSERT((uintptr_t)data % 2 == 0, + ("%s: unaligned data %p", __func__, data)); + KASSERT((len <= ISF_SECTORSIZE) && (len % 2 == 0), + ("%s: invalid length %ju", __func__, len)); + KASSERT(off % ISF_SECTORSIZE == 0, + ("%s: invalid offset %ju\n", __func__, off)); + + /* + * It is not permitted to read blocks that are in the process of + * being erased, but we know they will be all 1's after the + * erase so just report that value if asked about a block that + * is being erased. + */ + if (sc->isf_bstate[off / ISF_ERASE_BLOCK] == BS_ERASING) + memset(data, 0xFF, len); + else + bus_read_region_2(sc->isf_res, off, (uint16_t *)data, len / 2); +} + +static int +isf_write(struct isf_softc *sc, off_t off, void *data, size_t len) +{ + int cycles, error = 0; + uint16_t *dp; + uint16_t status; + off_t coff; + + KASSERT((uintptr_t)data % 2 == 0, + ("%s: unaligned data %p", __func__, data)); + KASSERT((len <= ISF_SECTORSIZE) && (len % 2 == 0), + ("%s: invalid length %ju", __func__, len)); + KASSERT(off % ISF_SECTORSIZE == 0, + ("%s: invalid offset %ju\n", __func__, off)); + KASSERT(!sc->isf_erasing, + ("%s: trying to write while erasing\n", __func__)); + KASSERT(sc->isf_bstate[off / ISF_ERASE_BLOCK] != BS_ERASING, + ("%s: block being erased at %ju\n", __func__, off)); + + isf_unlock_block(sc, off); + +#ifdef ISF_BUFFER_PROGRAM + for (dp = data, coff = off; dp - (uint16_t *)data < len / 2; + dp += 32, coff += 64) { + isf_clear_status(sc); + isf_write_cmd(sc, coff, ISF_CMD_BPS); + cycles = 0xFFFF; + while ( !(isf_read_off(sc, coff) & ISF_SR_DWS) ) { + if (cycles-- == 0) { + device_printf(sc->isf_dev, "timeout waiting" + " for write to start at 0x08%jx\n", + (intmax_t)coff); + return (EIO); + } + isf_write_cmd(sc, coff, ISF_CMD_BPS); + } + + /* When writing N blocks, send N-1 as the count */ + isf_write_cmd(sc, coff, 31); + bus_write_region_2(sc->isf_res, coff, dp, 32); + + isf_write_cmd(sc, coff, ISF_CMD_BPC); + + status = isf_read_off(sc, coff); + cycles = 0xFFFFF; + while ( !(status & ISF_SR_DWS) ) { + if (cycles-- == 0) { + device_printf(sc->isf_dev, "timeout waiting" + " for write to complete at 0x08%jx\n", + (intmax_t)coff); + error = EIO; + break; + } + status = isf_read_off(sc, coff); + } + isf_full_status_check(sc, off); + + isf_write_cmd(sc, coff, ISF_CMD_RA); + } +#else + for (dp = data, coff = off; dp - (uint16_t *)data < len / 2; + dp++, coff += 2) { + isf_write_cmd(sc, coff, ISF_CMD_WPS); + bus_write_2(sc->isf_res, coff, *dp); + status = isf_read_off(sc, coff); + cycles=0xFFFFF; + while ( !(status & ISF_SR_DWS) ) { + if (cycles-- == 0) { + device_printf(sc->isf_dev, "timeout waiting" + " for write to complete at 0x08%jx\n", + (intmax_t)coff); + error = EIO; + break; + } + status = isf_read_off(sc, coff); + } + + } + isf_full_status_check(sc, off); + isf_write_cmd(sc, coff, ISF_CMD_RA); +#endif + + isf_lock_block(sc, off); + + return error; +} + +static void +isf_erase_at(struct isf_softc *sc, off_t off) +{ + int cycles; + uint16_t status; + + isf_unlock_block(sc, off); + isf_clear_status(sc); + + isf_write_cmd(sc, off, ISF_CMD_BES); + isf_write_cmd(sc, off, ISF_CMD_BEC); + + cycles=0xFFFFFF; + status = isf_read_off(sc, off); + while ( !(status & ISF_SR_DWS) ) { +#ifdef NOTYET + ISF_SLEEP(sc, sc, hz); +#endif + if (cycles-- == 0) { + device_printf(sc->isf_dev, + "Giving up on erase\n"); + break; + } + status = isf_read_off(sc, off); + } + + isf_full_erase_status_check(sc, off); + + isf_lock_block(sc, off); + + isf_write_cmd(sc, off, ISF_CMD_RA); +} + +static void +isf_erase_range(struct isf_softc *sc, off_t blk_off, size_t size) +{ + off_t off; + off_t ms = sc->isf_disk->d_mediasize; + + KASSERT(blk_off % ISF_ERASE_BLOCK == 0, + ("%s: invalid offset %ju\n", __func__, blk_off)); + + ISF_LOCK_ASSERT(sc); + + for (off = blk_off; off < blk_off + size; off += ISF_ERASE_BLOCK) { + sc->isf_bstate[off / ISF_ERASE_BLOCK] = BS_ERASING; + + /* + * The first or last 128K is four blocks depending which + * part this is. For now, just assume both are and + * erase four times. + */ + if (off == 0 || ms - off == ISF_ERASE_BLOCK) { + isf_erase_at(sc, off); + isf_erase_at(sc, off + 0x08000); + isf_erase_at(sc, off + 0x10000); + isf_erase_at(sc, off + 0x18000); + } else + isf_erase_at(sc, off); + + sc->isf_bstate[off / ISF_ERASE_BLOCK] = BS_STEADY; + } +} + +/* + * disk(9) methods. + */ +static int +isf_disk_ioctl(struct disk *disk, u_long cmd, void *data, int fflag, + struct thread *td) +{ + int error = 0; + struct isf_softc *sc = disk->d_drv1; + struct isf_range *ir; + + switch (cmd) { + case ISF_ERASE: + ir = data; + if (ir->ir_off % ISF_ERASE_BLOCK != 0 || + ir->ir_off >= disk->d_mediasize || + ir->ir_size == 0 || + ir->ir_size % ISF_ERASE_BLOCK != 0 || + ir->ir_off + ir->ir_size > disk->d_mediasize) { + error = EINVAL; + break; + } + ISF_LOCK(sc); + if (sc->isf_erasing) { + ISF_UNLOCK(sc); + error = EBUSY; + break; + } + sc->isf_erasing = 1; + isf_erase_range(sc, ir->ir_off, ir->ir_size); + sc->isf_erasing = 0; + ISF_UNLOCK(sc); + break; + default: + error = EINVAL; + } + + return (error); +} + +static void +isf_disk_strategy(struct bio *bp) +{ + struct isf_softc *sc = bp->bio_disk->d_drv1;; + + /* + * We advertise a block size and maximum I/O size up the stack; catch + * any attempts to not follow the rules. + */ + KASSERT(bp->bio_bcount == ISF_SECTORSIZE, + ("%s: I/O size not %d", __func__, ISF_SECTORSIZE)); + + ISF_LOCK(sc); + bioq_disksort(&sc->isf_bioq, bp); + ISF_WAKEUP(sc); + ISF_UNLOCK(sc); +} + +static void +isf_task(void *arg) +{ + struct isf_softc *sc = arg; + struct bio *bp; + int ss = sc->isf_disk->d_sectorsize; + int error, i; + + for (;;) { + ISF_LOCK(sc); + do { + bp = bioq_first(&sc->isf_bioq); + if (bp == NULL) { + if (sc->isf_doomed) + kproc_exit(0); + else + ISF_SLEEP(sc, sc, 0); + } + } while (bp == NULL); + bioq_remove(&sc->isf_bioq, bp); + + error = 0; + switch (bp->bio_cmd) { + case BIO_READ: + isf_read(sc, bp->bio_pblkno * ss, bp->bio_data, + bp->bio_bcount); + break; + + case BIO_WRITE: + /* + * In principle one could suspend the in-progress + * erase, process any pending writes to other + * blocks and then proceed, but that seems + * overly complex for the likely usage modes. + */ + if (sc->isf_erasing) { + error = EBUSY; + break; + } + + /* + * Read in the block we want to write and check that + * we're only setting bits to 0. If an erase would + * be required return an I/O error. + */ + isf_read(sc, bp->bio_pblkno * ss, sc->isf_rbuf, + bp->bio_bcount); + for (i = 0; i < bp->bio_bcount / 2; i++) + if ((sc->isf_rbuf[i] & + ((uint16_t *)bp->bio_data)[i]) != + ((uint16_t *)bp->bio_data)[i]) { + device_printf(sc->isf_dev, "write" + " requires erase at 0x%08jx\n", + bp->bio_pblkno * ss); + error = EIO; + break; + } + if (error != 0) + break; + + error = isf_write(sc, bp->bio_pblkno * ss, + bp->bio_data, bp->bio_bcount); + break; + + default: + panic("%s: unsupported I/O operation %d", __func__, + bp->bio_cmd); + } + if (error == 0) + biodone(bp); + else + biofinish(bp, NULL, error); + ISF_UNLOCK(sc); + } +} + +static void +isf_dump_info(struct isf_softc *sc) +{ + int i; + int32_t reg; + + isf_write_cmd(sc, 0, ISF_CMD_RDI); + device_printf(sc->isf_dev, "manufacturer code: 0x%04x\n", + isf_read_reg(sc, ISF_REG_MC)); + device_printf(sc->isf_dev, "device id code: 0x%04x\n", + isf_read_reg(sc, ISF_REG_ID)); + device_printf(sc->isf_dev, "read config register: 0x%04x\n", + isf_read_reg(sc, ISF_REG_RCR)); + + device_printf(sc->isf_dev, "lock register 0: 0x%04x\n", + isf_read_reg(sc, ISF_REG_L0)); + device_printf(sc->isf_dev, "lock register 1: 0x%04x\n", + isf_read_reg(sc, ISF_REG_L1)); + + device_printf(sc->isf_dev, "factory PPR: 0x%016jx\n", + (uintmax_t)isf_read_reg64(sc, ISF_REG_FPP)); + device_printf(sc->isf_dev, "user PPR (64-bit): 0x%016jx\n", + (uintmax_t)isf_read_reg64(sc, ISF_REG_UPP)); + + for (reg = ISF_REG_PP1, i = 1; reg <= ISF_REG_PP16; reg += 8, i++) { + /* XXX: big-endian ordering of uint64_t's */ + device_printf(sc->isf_dev, + "user PPR [%02d]: 0x%016jx%016jx\n", i, + (uintmax_t)isf_read_reg64(sc, reg+4), + (uintmax_t)isf_read_reg64(sc, reg)); + } + + isf_write_cmd(sc, 0, ISF_CMD_RA); +} + +static void +isf_disk_insert(struct isf_softc *sc, off_t mediasize) +{ + struct disk *disk; + + sc->isf_doomed = 0; + sc->isf_erasing = 0; + sc->isf_bstate = malloc(sizeof(*sc->isf_bstate) * + (mediasize / ISF_ERASE_BLOCK), M_ISF, M_ZERO | M_WAITOK); + kproc_create(&isf_task, sc, &sc->isf_proc, 0, 0, "isf"); + + disk = disk_alloc(); + disk->d_drv1 = sc; + disk->d_name = "isf"; + disk->d_unit = sc->isf_unit; + disk->d_strategy = isf_disk_strategy; + disk->d_ioctl = isf_disk_ioctl; + disk->d_sectorsize = ISF_SECTORSIZE; + disk->d_mediasize = mediasize; + disk->d_maxsize = ISF_SECTORSIZE; + sc->isf_disk = disk; + + if (bootverbose) + isf_dump_info(sc); + + disk_create(disk, DISK_VERSION); + device_printf(sc->isf_dev, "%juM flash device\n", + (uintmax_t)disk->d_mediasize / (1024 * 1024)); + +} + +static void +isf_disk_remove(struct isf_softc *sc) +{ + struct disk *disk; + + ISF_LOCK_ASSERT(sc); + KASSERT(sc->isf_disk != NULL, ("%s: isf_disk NULL", __func__)); + + sc->isf_doomed = 1; + ISF_WAKEUP(sc); + ISF_SLEEP(sc, sc->isf_proc, 0); + + /* + * XXXRW: Is it OK to call disk_destroy() under the mutex, or should + * we be deferring that to the calling context once it is released? + */ + disk = sc->isf_disk; + disk_gone(disk); + disk_destroy(disk); + sc->isf_disk = NULL; + free(sc->isf_bstate, M_ISF); + device_printf(sc->isf_dev, "flash device removed\n"); +} + +int +isf_attach(struct isf_softc *sc) +{ + uint16_t id; + u_long start, size; + struct isf_chips *cp = chip_ids; + + start = rman_get_start(sc->isf_res); + if (start % 2 != 0) { + device_printf(sc->isf_dev, + "Unsupported flash start alignment %lu\n", + start); + return (ENXIO); + } + + isf_write_cmd(sc, 0, ISF_CMD_RDI); + id = isf_read_reg(sc, ISF_REG_ID); + while (cp->chip_id != id) + cp++; + if (cp->chip_desc == NULL) { + device_printf(sc->isf_dev, + "Unsupported device ID 0x%04x\n", id); + return (ENXIO); + } + isf_write_cmd(sc, 0, ISF_CMD_RA); + + size = rman_get_size(sc->isf_res); + if (size != cp->chip_size) { + device_printf(sc->isf_dev, + "Unsupported flash size %lu\n", size); + return (ENXIO); + } + + bioq_init(&sc->isf_bioq); + ISF_LOCK_INIT(sc); + sc->isf_disk = NULL; + isf_disk_insert(sc, size); + return(0); +} + +void +isf_detach(struct isf_softc *sc) +{ + + /* + * Simulate a disk removal if one is present to deal with any pending + * or queued I/O. This will occur as a result of a device driver + * detach -- the Intel StrataFlash has no notion of removal itself. + * + * XXXRW: Is the locking here right? + */ + ISF_LOCK(sc); + isf_disk_remove(sc); + bioq_flush(&sc->isf_bioq, NULL, ENXIO); + KASSERT(bioq_first(&sc->isf_bioq) == NULL, + ("%s: non-empty bioq", __func__)); + ISF_UNLOCK(sc); + ISF_LOCK_DESTROY(sc); +} diff --git a/sys/dev/isf/isf.h b/sys/dev/isf/isf.h new file mode 100644 index 000000000000..f5cdc08fc31e --- /dev/null +++ b/sys/dev/isf/isf.h @@ -0,0 +1,94 @@ +/*- + * Copyright (c) 2012 Robert N. M. Watson + * Copyright (c) 2012 SRI International + * All rights reserved. + * + * This software was developed by SRI International and the University of + * Cambridge Computer Laboratory under DARPA/AFRL contract (FA8750-10-C-0237) + * ("CTSRD"), as part of the DARPA CRASH research programme. + * + * 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. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``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 THE AUTHOR OR CONTRIBUTORS 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. + * + * $FreeBSD$ + */ + +#ifndef _DEV_ISF_H_ +#define _DEV_ISF_H_ + +struct isf_range { + off_t ir_off; /* Offset of range to delete (set to 0xFF) */ + size_t ir_size; /* Size of range */ +}; + +#define ISF_ERASE _IOW('I', 1, struct isf_range) + +/* + * Ordinary read and write operations are limited to 512 bytes. + * We support erasing 128K blocks and ignore the fact that portions of the + * flash are in fact divided into 32K blocks. + */ +#define ISF_SECTORSIZE (512) +#define ISF_ERASE_BLOCK (128 * 1024) + +#ifdef _KERNEL +MALLOC_DECLARE(M_ISF); + +enum bstate { + BS_STEADY = 0, + BS_ERASING +}; + +struct isf_softc { + device_t isf_dev; + int isf_unit; + struct resource *isf_res; + int isf_rid; + struct mtx isf_lock; + struct disk *isf_disk; + struct proc *isf_proc; + int isf_doomed; + + /* + * Fields relating to in-progress and pending I/O, if any. + */ + struct bio_queue_head isf_bioq; + uint16_t isf_rbuf[ISF_SECTORSIZE / 2]; + int isf_erasing; + enum bstate *isf_bstate; +}; + +#define ISF_LOCK(sc) mtx_lock(&(sc)->isf_lock) +#define ISF_LOCK_ASSERT(sc) mtx_assert(&(sc)->isf_lock, MA_OWNED) +#define ISF_LOCK_DESTROY(sc) mtx_destroy(&(sc)->isf_lock) +#define ISF_LOCK_INIT(sc) mtx_init(&(sc)->isf_lock, "isf", NULL, \ + MTX_DEF) +#define ISF_SLEEP(sc, wait, timo) mtx_sleep((wait), \ + &(sc)->isf_lock, PRIBIO, \ + "isf", (timo)) +#define ISF_UNLOCK(sc) mtx_unlock(&(sc)->isf_lock) +#define ISF_WAKEUP(sc) wakeup((sc)) + +int isf_attach(struct isf_softc *sc); +void isf_detach(struct isf_softc *sc); +#endif /* _KERNEL */ + +#endif /* _DEV_ISF_H_ */ diff --git a/sys/dev/isf/isf_nexus.c b/sys/dev/isf/isf_nexus.c new file mode 100644 index 000000000000..af2f874411c3 --- /dev/null +++ b/sys/dev/isf/isf_nexus.c @@ -0,0 +1,120 @@ +/*- + * Copyright (c) 2012 Robert N. M. Watson + * Copyright (c) 2012 SRI International + * All rights reserved. + * + * This software was developed by SRI International and the University of + * Cambridge Computer Laboratory under DARPA/AFRL contract (FA8750-10-C-0237) + * ("CTSRD"), as part of the DARPA CRASH research programme. + * + * 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. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``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 THE AUTHOR OR CONTRIBUTORS 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> +__FBSDID("$FreeBSD$"); + +#include <sys/param.h> +#include <sys/bus.h> +#include <sys/condvar.h> +#include <sys/conf.h> +#include <sys/bio.h> +#include <sys/kernel.h> +#include <sys/lock.h> +#include <sys/malloc.h> +#include <sys/module.h> +#include <sys/mutex.h> +#include <sys/rman.h> +#include <sys/systm.h> +#include <sys/taskqueue.h> + +#include <machine/bus.h> +#include <machine/resource.h> + +#include <geom/geom_disk.h> + +#include <dev/isf/isf.h> + +/* + * Nexus bus attachment for the Intel Strata Flash devices. Appropriate for + * most Altera FPGA SoC-style configurations in which the part will be exposed + * to the processor via a memory-mapped Avalon bus. + */ +static int +isf_nexus_probe(device_t dev) +{ + + device_set_desc(dev, "Intel StrataFlash NOR flash device"); + return (BUS_PROBE_DEFAULT); +} + +static int +isf_nexus_attach(device_t dev) +{ + int error; + struct isf_softc *sc; + + sc = device_get_softc(dev); + sc->isf_dev = dev; + sc->isf_unit = device_get_unit(dev); + sc->isf_rid = 0; + sc->isf_res = bus_alloc_resource_any(dev, SYS_RES_MEMORY, + &sc->isf_rid, RF_ACTIVE); + if (sc->isf_res == NULL) { + device_printf(dev, "couldn't map memory\n"); + return (ENXIO); + } + error = isf_attach(sc); + if (error) + bus_release_resource(dev, SYS_RES_MEMORY, sc->isf_rid, + sc->isf_res); + return (error); +} + +static int +isf_nexus_detach(device_t dev) +{ + struct isf_softc *sc; + + sc = device_get_softc(dev); + KASSERT(sc->isf_res != NULL, ("%s: resources not allocated", + __func__)); + isf_detach(sc); + bus_release_resource(dev, SYS_RES_MEMORY, sc->isf_rid, sc->isf_res); + return (0); +} + +static device_method_t isf_nexus_methods[] = { + DEVMETHOD(device_probe, isf_nexus_probe), + DEVMETHOD(device_attach, isf_nexus_attach), + DEVMETHOD(device_detach, isf_nexus_detach), + { 0, 0 } +}; + +static driver_t isf_nexus_driver = { + "isf", + isf_nexus_methods, + sizeof(struct isf_softc), +}; + +static devclass_t isf_devclass; + +DRIVER_MODULE(isf, nexus, isf_nexus_driver, isf_devclass, 0, 0); diff --git a/sys/mips/conf/BERI_DE4.hints b/sys/mips/conf/BERI_DE4.hints index 319d0c2aa148..4ffe6c2f9572 100644 --- a/sys/mips/conf/BERI_DE4.hints +++ b/sys/mips/conf/BERI_DE4.hints @@ -46,6 +46,16 @@ hint.altera_avgen.0.devname="berirom" #hint.altera_avgen.0.mmapio="rwx" #hint.altera_avgen.0.devname="de4flash" +# +# General Intel StrataFlash driver +# +hint.isf.0.at="nexus0" +hint.isf.0.maddr=0x74000000 +hint.isf.0.msize=0x2000000 +hint.isf.1.at="nexus0" +hint.isf.1.maddr=0x76000000 +hint.isf.1.msize=0x2000000 + # Reserved configuration blocks. Don't touch. hint.map.0.at="isf0" hint.map.0.start=0x00000000 diff --git a/sys/mips/conf/BERI_DE4_MDROOT b/sys/mips/conf/BERI_DE4_MDROOT index 8903179a220f..658c925f78c7 100644 --- a/sys/mips/conf/BERI_DE4_MDROOT +++ b/sys/mips/conf/BERI_DE4_MDROOT @@ -25,4 +25,5 @@ device altera_avgen device altera_jtag_uart device altera_sdcard +device isf #device sc diff --git a/sys/mips/conf/BERI_DE4_SDROOT b/sys/mips/conf/BERI_DE4_SDROOT index dcd177b4ae09..b41e6ffca9d6 100644 --- a/sys/mips/conf/BERI_DE4_SDROOT +++ b/sys/mips/conf/BERI_DE4_SDROOT @@ -18,4 +18,5 @@ device altera_avgen device altera_jtag_uart device altera_sdcard +device isf #device sc |