/* $NetBSD: flash_ebus.c,v 1.20.8.2 2019/12/18 20:04:33 martin Exp $ */ /*- * Copyright (c) 2010 The NetBSD Foundation, Inc. * All rights reserved. * * This code was written by Alessandro Forin and Neil Pittman * at Microsoft Research and contributed to The NetBSD Foundation * by Microsoft Corporation. * * 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 NETBSD FOUNDATION, INC. 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 FOUNDATION 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 /* RCS ID & Copyright macro defns */ __KERNEL_RCSID(0, "$NetBSD: flash_ebus.c,v 1.20.8.2 2019/12/18 20:04:33 martin Exp $"); /* Driver for the Intel 28F320/640/128 (J3A150) StrataFlash memory device * Extended to include the Intel JS28F256P30T95. */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include "locators.h" #include #include #include #include /* Internal config switches */ #define USE_BUFFERED_WRITES 0 /* Faster, but might not work in some (older) cases */ #define Verbose 0 /* Debug tools */ #define DEBUG_INTR 0x01 #define DEBUG_XFERS 0x02 #define DEBUG_STATUS 0x04 #define DEBUG_FUNCS 0x08 #define DEBUG_PROBE 0x10 #define DEBUG_WRITES 0x20 #define DEBUG_READS 0x40 #define DEBUG_ERRORS 0x80 #ifdef DEBUG int eflash_debug = DEBUG_ERRORS; #define EFLASH_DEBUG(x) (eflash_debug & (x)) #define DBGME(_lev_,_x_) if ((_lev_) & eflash_debug) _x_ #else #define EFLASH_DEBUG(x) (0) #define DBGME(_lev_,_x_) #endif #define DEBUG_PRINT(_args_,_lev_) DBGME(_lev_,printf _args_) /* Product ID codes */ #define MANUF_INTEL 0x89 #define DEVICE_320 0x16 #define DEVICE_640 0x17 #define DEVICE_128 0x18 #define DEVICE_256 0x19 /* Table of chips we understand. */ #define nDELTAS 3 struct flash_type { struct { uint32_t nSectors; uint32_t nKB; } ft_deltas[nDELTAS]; uint8_t ft_manuf_code; uint8_t ft_device_code; uint16_t ft_total_sectors; const char *ft_name; }; static const struct flash_type sector_maps[] = { { {{32,128},{0,0},}, MANUF_INTEL, DEVICE_320, 32, /* a J3 part */ "StrataFlash 28F320" }, { {{64,128},{0,0},}, MANUF_INTEL, DEVICE_640, 64, /* a J3 part */ "StrataFlash 28F640" }, { {{128,128},{0,0},}, MANUF_INTEL, DEVICE_128, 128, /* a J3 part */ "StrataFlash 28F128" }, { {{255,128},{4,32},{0,0}}, MANUF_INTEL, DEVICE_256, 259, /* a P30 part */ "StrataFlash 28F256" } }; #define nMAPS ((sizeof sector_maps) / (sizeof sector_maps[0])) /* Instead of dragging in atavar.h.. */ struct eflash_bio { volatile int flags;/* cmd flags */ #define ATA_POLL 0x0002 /* poll for completion */ #define ATA_SINGLE 0x0008 /* transfer must be done in singlesector mode */ #define ATA_READ 0x0020 /* transfer is a read (otherwise a write) */ #define ATA_CORR 0x0040 /* transfer had a corrected error */ daddr_t blkno; /* block addr */ daddr_t blkdone;/* number of blks transferred */ size_t nblks; /* number of blocks currently transferring */ size_t nbytes; /* number of bytes currently transferring */ char *databuf;/* data buffer address */ volatile int error; u_int32_t r_error;/* copy of status register */ #ifdef HAS_BAD144_HANDLING daddr_t badsect[127];/* 126 plus trailing -1 marker */ #endif }; /* End of atavar.h*/ /* chip-specific functions */ struct flash_ops; /* * Device softc */ struct eflash_softc { device_t sc_dev; /* General disk infos */ struct disk sc_dk; struct bufq_state *sc_q; struct callout sc_restart_ch; /* IDE disk soft states */ struct buf *sc_bp; /* buf being transfered */ struct buf *active_xfer; /* buf handoff to thread */ struct eflash_bio sc_bio; /* current transfer */ struct proc *ch_thread; int ch_flags; #define ATACH_SHUTDOWN 0x02 /* thread is shutting down */ #define ATACH_IRQ_WAIT 0x10 /* thread is waiting for irq */ #define ATACH_DISABLED 0x80 /* channel is disabled */ #define ATACH_TH_RUN 0x100 /* the kernel thread is working */ #define ATACH_TH_RESET 0x200 /* someone ask the thread to reset */ int openings; int sc_flags; #define EFLASHF_WLABEL 0x004 /* label is writable */ #define EFLASHF_LABELLING 0x008 /* writing label */ #define EFLASHF_LOADED 0x010 /* parameters loaded */ #define EFLASHF_WAIT 0x020 /* waiting for resources */ #define EFLASHF_KLABEL 0x080 /* retain label after 'full' close */ int retries; /* number of xfer retry */ krndsource_t rnd_source; /* flash-specific state */ struct _Flash *sc_dp; uint32_t sc_size; uint32_t sc_capacity; paddr_t sc_base; volatile uint8_t *sc_page0; /* current read-write sector mapping */ /*volatile*/ uint8_t *sc_sector; uint32_t sc_sector_size; uint32_t sc_sector_offset; #define NOSECTOR ((uint32_t)(~0)) int sc_erased; /* device-specificity */ uint32_t sc_buffersize; vsize_t sc_max_secsize; unsigned int sc_chips; const struct flash_ops *sc_ops; struct flash_type sc_type; }; static int eflash_ebus_match (device_t, cfdata_t, void *); static void eflash_ebus_attach (device_t, device_t, void *); CFATTACH_DECL_NEW(flash_ebus, sizeof (struct eflash_softc), eflash_ebus_match, eflash_ebus_attach, NULL, NULL); /* implementation decls */ static int flash_identify(struct eflash_softc*); static int KBinSector(struct flash_type * SecMap, unsigned int SecNo); static uint32_t SectorStart(struct flash_type * SecMap, int SecNo); static unsigned int SectorNumber(struct flash_type * SecMap, uint32_t Offset); static void eflash_thread(void *arg); static int eflash_read_at (struct eflash_softc *sc, daddr_t start_sector, char *buffer, size_t nblocks, size_t * pSizeRead); static int eflash_write_at(struct eflash_softc *sc, daddr_t start_sector, char *buffer, size_t nblocks, size_t * pSizeWritten); /* Config functions */ static int eflash_ebus_match(device_t parent, cfdata_t match, void *aux) { struct ebus_attach_args *ia = aux; struct _Flash *f = (struct _Flash *)ia->ia_vaddr; if (strcmp("flash", ia->ia_name) != 0) return (0); if ((f == NULL) || ((f->BaseAddressAndTag & FLASHBT_TAG) != PMTTAG_FLASH)) return (0); return (1); } static void eflash_ebus_attach(device_t parent, device_t self, void *aux) { struct ebus_attach_args *ia =aux; struct eflash_softc *sc = device_private(self); uint32_t base, ctrl; int error; /* Plan. * - mips_map_physmem() (with uncached) first page * - keep it around since we need status ops * - find what type it is. * - then mips_map_physmem() each sector as needed. */ sc->sc_dev = self; sc->sc_dp = (struct _Flash*)ia->ia_vaddr; base = sc->sc_dp->BaseAddressAndTag & FLASHBT_BASE; ctrl = sc->sc_dp->Control; sc->sc_size = ctrl & FLASHST_SIZE; sc->sc_capacity = sc->sc_size / DEV_BSIZE; sc->sc_base = base; /* The chip is 16bit, so if we get 32bit there are two */ sc->sc_chips = (ctrl & FLASHST_BUS_32) ? 2 : 1; /* Map the first page to see what chip we got */ sc->sc_page0 = (volatile uint8_t *) mips_map_physmem(base, PAGE_SIZE); if (flash_identify(sc)) { printf(" base %x: %dMB flash memory (%d x %s)\n", base, sc->sc_size >> 20, sc->sc_chips, sc->sc_type.ft_name); } else { /* BUGBUG If we dont identify it stop the driver! */ printf(": unknown manufacturer id %x, device id %x\n", sc->sc_type.ft_manuf_code, sc->sc_type.ft_device_code); } config_pending_incr(self); error = kthread_create(PRI_NONE, 0, NULL, eflash_thread, sc, NULL, "%s", device_xname(sc->sc_dev)); if (error) aprint_error_dev(sc->sc_dev, "unable to create kernel thread: error %d\n", error); } /* Implementation functions */ /* Returns the size in KBytes of a given sector, * or -1 for bad arguments. */ static int KBinSector(struct flash_type * SecMap, unsigned int SecNo) { int i; for (i = 0; i < nDELTAS; i++) { if (SecNo < SecMap->ft_deltas[i].nSectors) return SecMap->ft_deltas[i].nKB; SecNo -= SecMap->ft_deltas[i].nSectors; } return -1; } #define SectorSize(_map_,_sector_) (1024 * KBinSector(_map_,_sector_)) /* Whats the starting offset of sector N */ static uint32_t SectorStart(struct flash_type * SecMap, int SecNo) { int i; uint32_t Offset = 0; for (i = 0; i < nDELTAS; i++) { if ((unsigned int)SecNo < SecMap->ft_deltas[i].nSectors) return 1024 * (Offset + (SecMap->ft_deltas[i].nKB * SecNo)); SecNo -= SecMap->ft_deltas[i].nSectors; Offset += SecMap->ft_deltas[i].nSectors * SecMap->ft_deltas[i].nKB; } return ~0; } /* What sector number corresponds to a given offset */ static unsigned int SectorNumber(struct flash_type * SecMap, uint32_t Offset) { unsigned int i; unsigned int SecNo = 0; Offset /= 1024; for (i = 0; i < nDELTAS; i++) { if (Offset < (unsigned int) ((SecMap->ft_deltas[i].nSectors * SecMap->ft_deltas[i].nKB))) return SecNo + (Offset / SecMap->ft_deltas[i].nKB); SecNo += SecMap->ft_deltas[i].nSectors; Offset -= SecMap->ft_deltas[i].nSectors * SecMap->ft_deltas[i].nKB; } return ~0; } /* * Semi-generic operations */ struct flash_ops { void (*write_uint8) (struct eflash_softc *sc, volatile void *Offset, uint8_t Value); void (*read_uint8) (struct eflash_softc *sc, volatile void *Offset, uint8_t *Value); void (*write_uint16) (struct eflash_softc *sc, volatile void *Offset, uint16_t Value); void (*read_uint16) (struct eflash_softc *sc, volatile void *Offset, uint16_t *Value); void (*write_uint32) (struct eflash_softc *sc, volatile void *Offset, uint32_t Value); void (*read_uint32) (struct eflash_softc *sc, volatile void *Offset, uint32_t *Value); int (*program_word) (struct eflash_softc *sc, volatile void *Offset, uint16_t *pValues, int Verify, int *nWritten); int (*program_buffer) (struct eflash_softc *sc, volatile void *Offset, uint16_t *pValues, int Verify, int *nWritten); }; /* * Hardware access proper, single-chip */ static void single_write_uint8 (struct eflash_softc *sc,volatile void *Offset,uint8_t Value) { volatile uint8_t * Where = Offset; *Where = Value; } static void single_read_uint8 (struct eflash_softc *sc,volatile void *Offset,uint8_t *Value) { volatile uint8_t * Where = Offset; *Value = *Where; } static void single_write_uint16 (struct eflash_softc *sc,volatile void *Offset,uint16_t Value) { volatile uint16_t * Where = Offset; *Where = Value; } static void single_read_uint16 (struct eflash_softc *sc,volatile void *Offset,uint16_t *Value) { volatile uint16_t * Where = Offset; *Value = *Where; } /* This one should not be used, probably */ static void single_write_uint32 (struct eflash_softc *sc,volatile void *Offset,uint32_t Value) { #if 0 /* The chip cannot take back-to-back writes */ volatile uint32_t * Where = Offset; *Where = Value; #else volatile uint8_t * Where = Offset; uint16_t v0, v1; /* Unfortunately, this is bytesex dependent */ #if (BYTE_ORDER == BIG_ENDIAN) v1 = (uint16_t) Value; v0 = (uint16_t) (Value >> 16); #else v0 = (uint16_t) Value; v1 = (uint16_t) (Value >> 16); #endif single_write_uint16(sc,Where,v0); single_write_uint16(sc,Where+2,v1); #endif } static void single_read_uint32 (struct eflash_softc *sc,volatile void *Offset,uint32_t *Value) { /* back-to-back reads must be ok */ volatile uint32_t * Where = Offset; *Value = *Where; } /* * Hardware access proper, paired-chips * NB: This set of ops assumes two chips in parallel on a 32bit bus, * each operation is repeated in parallel to both chips */ static void twin_write_uint8 (struct eflash_softc *sc,volatile void *Offset,uint8_t Value) { volatile uint32_t * Where = Offset; uint32_t v = Value | ((uint32_t)Value << 16); v = le32toh(v); *Where = v; } static void twin_read_uint8 (struct eflash_softc *sc,volatile void *Offset,uint8_t *Value) { volatile uint32_t * Where = Offset; uint32_t v; v = *Where; v = le32toh(v); *Value = (uint8_t) v; } /* This one should *not* be used, error-prone */ static void twin_write_uint16 (struct eflash_softc *sc,volatile void *Offset,uint16_t Value) { volatile uint16_t * Where = Offset; *Where = Value; } static void twin_read_uint16 (struct eflash_softc *sc,volatile void *Offset,uint16_t *Value) { volatile uint16_t * Where = Offset; *Value = *Where; } static void twin_write_uint32 (struct eflash_softc *sc,volatile void *Offset,uint32_t Value) { volatile uint32_t * Where = Offset; Value = le32toh(Value); *Where = Value; } static void twin_read_uint32 (struct eflash_softc *sc,volatile void *Offset,uint32_t *Value) { volatile uint32_t * Where = Offset; uint32_t v; v = *Where; v = le32toh(v); *Value = v; } /* * Command and status definitions */ /* Defines for the STATUS register */ #define ST_reserved 0x01 #define ST_BLOCK_LOCKED 0x02 #define ST_PROGRAM_SUSPENDED 0x04 #define ST_LOW_VOLTAGE 0x08 #define ST_LOCK_BIT_ERROR 0x10 #define ST_ERASE_ERROR 0x20 #define ST_ERASE_SUSPENDED 0x40 #define ST_READY 0x80 #define ST_ERASE_MASK 0xee /* bits to check after erase command */ #define ST_MASK 0xfe /* ignore reserved */ /* Command set (what we use of it) */ #define CMD_CONFIRM 0xd0 #define CMD_READ_ARRAY 0xff #define CMD_READ_ID 0x90 #define CMD_READ_STATUS 0x70 #define CMD_CLEAR_STATUS 0x50 #define CMD_WRITE_WORD 0x40 #define CMD_WRITE_BUFFER 0xe8 #define CMD_ERASE_SETUP 0x20 #define CMD_ERASE_CONFIRM CMD_CONFIRM #define CMD_SET_PREFIX 0x60 /* set read config, lock bits */ #define CMD_LOCK 0x01 #define CMD_UNLOCK CMD_CONFIRM /* What we dont use of it */ #define CMD_READ_QUERY 0x98 # define BUFFER_BYTES 32 #define CMD_ERASE_SUSPEND 0xb0 #define CMD_ERASE_RESUME CMD_CONFIRM #define CMD_CONFIGURATION 0xb8 #define CMD_PROTECT 0xc0 /* Enter the Product ID mode (Read Identifier Codes) */ static void ProductIdEnter(struct eflash_softc *sc) { sc->sc_ops->write_uint8(sc,sc->sc_page0,CMD_READ_ID); } /* Exit the Product ID mode (enter Read Array mode) */ static void ProductIdExit(struct eflash_softc *sc) { sc->sc_ops->write_uint8(sc,sc->sc_page0,CMD_READ_ARRAY); } /* Read the status register */ static uint8_t ReadStatusRegister(struct eflash_softc *sc) { uint8_t Status; sc->sc_ops->write_uint8(sc,sc->sc_page0,CMD_READ_STATUS); sc->sc_ops->read_uint8(sc,sc->sc_page0,&Status); sc->sc_ops->write_uint8(sc,sc->sc_page0,CMD_READ_ARRAY); return Status; } /* Clear error bits in status */ static void ClearStatusRegister(struct eflash_softc *sc) { sc->sc_ops->write_uint8(sc,sc->sc_page0,CMD_CLEAR_STATUS); } #if DEBUG /* Decode status bits */ typedef const char *string; static void PrintStatus(uint8_t Status) { /* BUGBUG there's a %b format I think? */ string BitNames[8] = { "reserved", "BLOCK_LOCKED", "PROGRAM_SUSPENDED", "LOW_VOLTAGE", "LOCK_BIT_ERROR", "ERASE_ERROR", "ERASE_SUSPENDED", "READY" }; int i; int OneSet = FALSE; printf("[status %x =",Status); for (i = 0; i < 8; i++) { if (Status & (1<sc_ops->read_uint16(sc,Offset,&Data16); #ifdef Verbose if (Verbose) { printf("Location %p was x%x\n", Offset, Data16); } #endif if (Data16 != 0xffff) printf("Offset %p not ERASED, wont take.\n",Offset); } sc->sc_ops->write_uint8(sc,sc->sc_page0,CMD_WRITE_WORD); sc->sc_ops->write_uint16(sc,Offset,Value); /* Wait until the operation is completed * Specs say it takes between 210 and 630 us * Errata says 360 TYP and Max=TBD (sic) */ DELAY(800); for (i = 0; i < 10; i++) { sc->sc_ops->read_uint8(sc,Offset,&Status); if ((Status & ST_READY)) break; DELAY(100); } ProductIdExit(sc); if (Verify) { sc->sc_ops->read_uint16(sc,Offset,&Data16); #ifdef Verbose if (Verbose) { printf("Location %p is now x%x\n", Offset, Data16); } #endif if ((Data16 != Value)) { PrintStatus(Status); printf(". That didnt work, try again.. [%x != %x]\n", Data16, Value); ClearStatusRegister(sc); return FALSE; } } *nWritten = 2; return TRUE; } /* Write one buffer, 16bit words at a time */ static int single_program_buffer(struct eflash_softc *sc, volatile void *Offset, uint16_t *Values, int Verify, int *nWritten) { uint8_t Status; uint16_t i, Data16, Value = 0; volatile uint8_t *Where = Offset; *nWritten = 0; if (sc->sc_buffersize == 0) return FALSE; /* sanity */ if (Verify) { for (i = 0; i < sc->sc_buffersize; i+= 2) { sc->sc_ops->read_uint16(sc,Where+i,&Data16); #ifdef Verbose if (Verbose) { printf("Location %p was x%x\n", Where+i, Data16); } #endif if (Data16 != 0xffff) printf("Offset %p not ERASED, wont take.\n",Where+i); } } /* Specs say to retry if necessary */ for (i = 0; i < 5; i++) { sc->sc_ops->write_uint8(sc,Offset,CMD_WRITE_BUFFER); DELAY(10); sc->sc_ops->read_uint8(sc,Offset,&Status); if ((Status & ST_READY)) break; } if (0 == (Status & ST_READY)) { printf("FAILED program_buffer at Location %p, Status= x%x\n", Offset, Status); return FALSE; } /* Say how many words we'll be sending */ sc->sc_ops->write_uint8(sc,Offset,(uint8_t)(sc->sc_buffersize/2)); /* Send the data */ for (i = 0; i < sc->sc_buffersize; i+= 2) { Value = Values[i/2]; sc->sc_ops->write_uint16(sc,Where+i,Value); DELAY(10);/*jic*/ } /* Write confirmation */ sc->sc_ops->write_uint8(sc,Offset,CMD_CONFIRM); /* Wait until the operation is completed * Specs say it takes between 800 and 2400 us * Errata says 1600 TYP and Max=TBD (sic), but fixed in stepping A3 and above. */ DELAY(800); for (i = 0; i < 20; i++) { sc->sc_ops->write_uint8(sc,Offset,CMD_READ_STATUS); sc->sc_ops->read_uint8(sc,Offset,&Status); if ((Status & ST_READY)) break; DELAY(200); } ProductIdExit(sc); /* Verify? */ if (Verify) { for (i = 0; i < sc->sc_buffersize; i+= 2) { sc->sc_ops->read_uint16(sc,Where+i,&Data16); #ifdef Verbose if (Verbose) { printf("Location %p is now x%x\n", Where+i, Data16); } #endif Value = Values[i/2]; if ((Data16 != Value)) { PrintStatus(Status); printf(". That didnt work, try again.. [%x != %x]\n", Data16, Value); ClearStatusRegister(sc); return FALSE; } } } *nWritten = sc->sc_buffersize; return TRUE; } /* Write one 32bit word */ static int twin_program_word(struct eflash_softc *sc, volatile void *Offset, uint16_t *Values, int Verify, int *nWritten) { uint8_t Status; uint32_t i, Data32, Value; uint16_t v0, v1; *nWritten = 0; v0 = Values[0]; v0 = le16toh(v0); v1 = Values[1]; v1 = le16toh(v1); Value = v0 | ((uint32_t)v1 << 16); if (Verify) { sc->sc_ops->read_uint32(sc,Offset,&Data32); #ifdef Verbose if (Verbose) { printf("Location %p was x%x\n", Offset, Data32); } #endif if (Data32 != 0xffffffff) printf("Offset %p not ERASED, wont take.\n",Offset); } sc->sc_ops->write_uint8(sc,sc->sc_page0,CMD_WRITE_WORD); sc->sc_ops->write_uint32(sc,Offset,Value); /* Wait until the operation is completed * Specs say it takes between 210 and 630 us * Errata says 360 TYP and Max=TBD (sic) */ DELAY(400); for (i = 0; i < 10; i++) { sc->sc_ops->read_uint8(sc,Offset,&Status); if ((Status & ST_READY)) break; DELAY(100); } ProductIdExit(sc); if (Verify) { sc->sc_ops->read_uint32(sc,Offset,&Data32); #ifdef Verbose if (Verbose) { printf("Location %p is now x%x\n", Offset, Data32); } #endif if ((Data32 != Value)) { PrintStatus(Status); printf(". That didnt work, try again.. [%x != %x]\n", Data32, Value); ClearStatusRegister(sc); return FALSE; } } *nWritten = 4; return TRUE; } /* Write one buffer, 32bit words at a time */ static int twin_program_buffer(struct eflash_softc *sc, volatile void *Offset, uint16_t *Values, int Verify, int *nWritten) { uint8_t Status; uint32_t i, Data32, Value; uint16_t v0 = 0, v1; volatile uint8_t *Where = Offset; *nWritten = 0; if (sc->sc_buffersize == 0) return FALSE; /* sanity */ if (Verify) { for (i = 0; i < sc->sc_buffersize; i+= 4) { sc->sc_ops->read_uint32(sc,Where+i,&Data32); #ifdef Verbose if (Verbose) { printf("Location %p was x%x\n", Where+i, Data32); } #endif if (Data32 != 0xffffffff) printf("Offset %p not ERASED, wont take.\n",Where+i); } } /* Specs say to retry if necessary */ for (i = 0; i < 5; i++) { sc->sc_ops->write_uint8(sc,Offset,CMD_WRITE_BUFFER); DELAY(10); sc->sc_ops->read_uint8(sc,Offset,&Status); if ((Status & ST_READY)) break; } if (0 == (Status & ST_READY)) { printf("FAILED program_buffer at Location %p, Status= x%x\n", Offset, Status); return FALSE; } /* Say how many words we'll be sending */ sc->sc_ops->write_uint8(sc,Offset,(uint8_t)(sc->sc_buffersize/4)); /* to each twin! */ /* Send the data */ for (i = 0; i < sc->sc_buffersize; i+= 4) { v0 = Values[i/2]; v0 = le16toh(v0); v1 = Values[1+(i/2)]; v1 = le16toh(v1); Value = v0 | ((uint32_t)v1 << 16); sc->sc_ops->write_uint32(sc,Where+i,Value); DELAY(10);/*jic*/ } /* Write confirmation */ sc->sc_ops->write_uint8(sc,Offset,CMD_CONFIRM); /* Wait until the operation is completed * Specs say it takes between 800 and 2400 us * Errata says 1600 TYP and Max=TBD (sic), but fixed in stepping A3 and above. */ DELAY(800); for (i = 0; i < 20; i++) { sc->sc_ops->write_uint8(sc,Offset,CMD_READ_STATUS); sc->sc_ops->read_uint8(sc,Offset,&Status); if ((Status & ST_READY)) break; DELAY(200); } ProductIdExit(sc); /* Verify */ if (Verify) { for (i = 0; i < sc->sc_buffersize; i+= 4) { sc->sc_ops->read_uint32(sc,Where+i,&Data32); #ifdef Verbose if (Verbose) { printf("Location %p is now x%x\n", Where+i, Data32); } #endif v0 = Values[i/2]; v0 = le16toh(v0); v1 = Values[1+(i/2)]; v1 = le16toh(v1); Value = v0 | ((uint32_t)v1 << 16); if ((Data32 != Value)) { PrintStatus(Status); printf(". That didnt work, try again.. [%x != %x]\n", Data32, Value); ClearStatusRegister(sc); return FALSE; } } } *nWritten = sc->sc_buffersize; return TRUE; } /* Is there a lock on a given sector */ static int IsSectorLocked(struct eflash_softc *sc, uint8_t *secptr) { uint8_t Data, Data1; ProductIdEnter(sc); /* Lockout info is at address 2 of the given sector, meaning A0=0 A1=1. */ sc->sc_ops->read_uint8(sc,secptr+(0x0002*2*sc->sc_chips),&Data); sc->sc_ops->read_uint8(sc,secptr+(0x0003*2*sc->sc_chips),&Data1); ProductIdExit(sc); return (Data & 1); } /* Remove the write-lock to a sector */ static void SectorUnLock(struct eflash_softc *sc, uint8_t *secptr) { uint8_t Status; int i; DBGME(DEBUG_FUNCS,printf("%s: Unlocking sector %d [ptr %p] ...\n", device_xname(sc->sc_dev), sc->sc_sector_offset, secptr)); sc->sc_ops->write_uint8(sc,sc->sc_page0,CMD_SET_PREFIX); sc->sc_ops->write_uint8(sc,secptr,CMD_UNLOCK); /* Wait until the unlock is complete. * Specs say this takes between 64 and 75 usecs. */ DELAY(100); for (i = 0; i < 10; i++) { sc->sc_ops->read_uint8(sc,secptr,&Status); if ((Status & ST_READY)) break; DELAY(100); } ProductIdExit(sc); if ((Status & ST_MASK) == ST_READY) { DBGME(DEBUG_FUNCS,printf("%s: Unlocked ok.\n", device_xname(sc->sc_dev))); return; } PrintStatus(Status); DBGME(DEBUG_ERRORS,printf("%s: Unlock of sector %d NOT completed (status=%x).\n", device_xname(sc->sc_dev), sc->sc_sector_offset, Status)); ClearStatusRegister(sc); } /* Erase one sector */ static int SectorErase(struct eflash_softc *sc, void *secptr) { uint8_t Status = 0; uint16_t i; DBGME(DEBUG_FUNCS,printf("%s: Erasing sector %d [ptr %p] ...\n", device_xname(sc->sc_dev), sc->sc_sector_offset, secptr)); /* On some chips we just cannot avoid the locking business. */ if ((sc->sc_chips == 1) && IsSectorLocked(sc,secptr)) SectorUnLock(sc,secptr); sc->sc_ops->write_uint8(sc,secptr,CMD_ERASE_SETUP); sc->sc_ops->write_uint8(sc,secptr,CMD_ERASE_CONFIRM); /* Wait until the erase is actually completed * Specs say it will take between 1 and 5 seconds. * Errata says it takes 2 sec min and 25 sec max. * Double that before giving up. */ for (i = 0; i < 20; i++) { /* Sleep for at least 2 seconds */ tsleep(sc,PWAIT,"erase", hz * 2); sc->sc_ops->read_uint8(sc,secptr,&Status); if ((Status & ST_READY)) break; PrintStatus(Status); } ProductIdExit(sc); if ((Status & ST_ERASE_MASK) == ST_READY) { DBGME(DEBUG_FUNCS,printf("%s: Erased ok.\n", device_xname(sc->sc_dev))); return 0; } PrintStatus(Status); DBGME(DEBUG_ERRORS,printf("%s: Erase of sector %d NOT completed (status=%x).\n", device_xname(sc->sc_dev), sc->sc_sector_offset, Status)); ClearStatusRegister(sc); return EIO; } /* Write (a portion of) a sector */ static size_t eflash_write_sector(struct eflash_softc *sc, char *Buffer, size_t n, uint8_t *Offset, int Verify) { size_t i; /* Make sure the device is not screwed up */ if (IsIrresponsive(sc)) { printf("FLASH is locked-up (or mapped cacheable?), wont work. "); } for (i = 0; i < n;) { int nTries; int nWritten = 0;/*we expect 2 or 4 */ if (sc->sc_buffersize && ((n-i) >= sc->sc_buffersize)) { for (nTries = 0; nTries < 5; nTries++) if (sc->sc_ops->program_buffer(sc,Offset,(uint16_t*)(Buffer+i),Verify,&nWritten)) break; } else { for (nTries = 0; nTries < 5; nTries++) if (sc->sc_ops->program_word(sc,Offset,(uint16_t*)(Buffer+i),Verify,&nWritten)) break; } Offset += nWritten; i += nWritten; if (nWritten == 0) break; } return i; } /* Identify type and the sector map of the FLASH. * Argument is the base address of the device and the count of chips on the bus (1/2) * Returns FALSE if failed */ static const struct flash_ops single_ops = { single_write_uint8, single_read_uint8, single_write_uint16, single_read_uint16, single_write_uint32, single_read_uint32, single_program_word, single_program_buffer }; static const struct flash_ops twin_ops = { twin_write_uint8, twin_read_uint8, twin_write_uint16, twin_read_uint16, twin_write_uint32, twin_read_uint32, twin_program_word, twin_program_buffer }; static int flash_identify(struct eflash_softc *sc) { uint8_t Mid, Did; int i; if (sc->sc_chips > 1) sc->sc_ops = &twin_ops; else sc->sc_ops = &single_ops; sc->sc_buffersize = 0; #if USE_BUFFERED_WRITES sc->sc_buffersize = BUFFER_BYTES * sc->sc_chips; #endif sc->sc_sector = NULL; sc->sc_sector_size = 0; sc->sc_sector_offset = NOSECTOR; sc->sc_erased = FALSE; ProductIdEnter(sc); sc->sc_ops->read_uint8(sc,sc->sc_page0+(0x0000*2*sc->sc_chips),&Mid); sc->sc_ops->read_uint8(sc,sc->sc_page0+(0x0001*2*sc->sc_chips),&Did); ProductIdExit(sc); sc->sc_type.ft_manuf_code = Mid; sc->sc_type.ft_device_code = Did; for (i = 0; i < nMAPS; i++) { if ((sector_maps[i].ft_manuf_code == Mid) && (sector_maps[i].ft_device_code == Did)) { int j; uint32_t ms = 0; sc->sc_type = sector_maps[i]; /* double the sector sizes if twin-chips */ for (j = 0; j < nDELTAS; j++) { sc->sc_type.ft_deltas[j].nKB *= sc->sc_chips; if (ms < sc->sc_type.ft_deltas[j].nKB) ms = sc->sc_type.ft_deltas[j].nKB; } sc->sc_max_secsize = ms * 1024; return TRUE; } } return FALSE; } /* Common code for read&write argument validation */ static int eflash_validate(struct eflash_softc *sc, daddr_t start, size_t *pSize, void **pSrc) { daddr_t Size; uint32_t sec; size_t secsize, secstart; /* Validate args */ if (start >= sc->sc_capacity) { *pSize = 0; DBGME(DEBUG_ERRORS,printf("eflash::ValidateArg(%qx) EOF\n", start)); return E2BIG; } /* Map sector if not already */ sec = SectorNumber(&sc->sc_type, start << DEV_BSHIFT); secsize = SectorSize( &sc->sc_type, sec); secstart = SectorStart(&sc->sc_type,sec); if (sec != sc->sc_sector_offset) { int error; /* unmap previous first */ if (sc->sc_sector_offset != NOSECTOR) { DBGME(DEBUG_FUNCS,printf("%s: unmap %p %zx\n", device_xname(sc->sc_dev), sc->sc_sector, sc->sc_sector_size)); iounaccess((vaddr_t)sc->sc_sector, sc->sc_sector_size); sc->sc_sector_offset = NOSECTOR; } /* map new */ error = ioaccess((vaddr_t)sc->sc_sector, secstart + sc->sc_base, secsize); DBGME(DEBUG_FUNCS,printf("%s: mapped %p %zx -> %zx %d\n", device_xname(sc->sc_dev), sc->sc_sector, secsize, secstart + sc->sc_base,error)); if (error) return error; /* Update state. We have to assume the sector was not erased. Sigh. */ sc->sc_sector_offset = sec; sc->sc_sector_size = secsize; sc->sc_erased = FALSE; } /* Adjust size if necessary */ Size = start + *pSize; /* last sector */ if (Size > sc->sc_capacity) { /* At most this many sectors */ Size = sc->sc_capacity - start; *pSize = (size_t)Size; } if (*pSize > (secsize >> DEV_BSHIFT)) { *pSize = secsize >> DEV_BSHIFT; } *pSrc = sc->sc_sector + (start << DEV_BSHIFT) - secstart; DBGME(DEBUG_FUNCS,printf("%s: Validate %qx %zd %p\n", device_xname(sc->sc_dev), start,*pSize, *pSrc)); return 0; } static int eflash_read_at (struct eflash_softc *sc, daddr_t start_sector, char *buffer, size_t nblocks, size_t * pSizeRead) { int error; uint32_t SizeRead = 0; void *src; DBGME(DEBUG_XFERS|DEBUG_READS,printf("%s: EflashReadAt(%qx %p %zd %p)\n", device_xname(sc->sc_dev), start_sector, buffer, nblocks, pSizeRead)); /* Validate & trim arguments */ error = eflash_validate(sc, start_sector, &nblocks, &src); /* Copy data if */ if (error == 0) { SizeRead = nblocks; memcpy(buffer, src, nblocks << DEV_BSHIFT); } if (pSizeRead) *pSizeRead = SizeRead; return error; } /* Write SIZE bytes to device. */ static int eflash_write_at (struct eflash_softc *sc, daddr_t start_sector, char *buffer, size_t nblocks, size_t * pSizeWritten) { int error; void *src; size_t SizeWritten = 0; DBGME(DEBUG_XFERS|DEBUG_WRITES,printf("%s: EflashWriteAt(%qx %p %zd %p)\n", device_xname(sc->sc_dev), start_sector, buffer, nblocks, pSizeWritten)); /* Validate & trim arguments */ error = eflash_validate(sc, start_sector, &nblocks, &src); if (error == 0) { /* Do we have to erase it */ if (! sc->sc_erased) { error = SectorErase(sc,src); if (error) goto Out; sc->sc_erased = TRUE; } SizeWritten = eflash_write_sector(sc, buffer, nblocks << DEV_BSHIFT, src, TRUE); SizeWritten >>= DEV_BSHIFT; } Out: if (pSizeWritten) *pSizeWritten = SizeWritten; return error; } /* Rest of code lifted with mods from the dev\ata\wd.c driver */ /* * Copyright (c) 1998, 2001 Manuel Bouyer. All rights reserved. * * 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 ``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 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. */ /*- * Copyright (c) 1998, 2003, 2004 The NetBSD Foundation, Inc. * All rights reserved. * * This code is derived from software contributed to The NetBSD Foundation * by Charles M. Hannum and by Onno van der Linden. * * 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 NETBSD FOUNDATION, INC. 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 FOUNDATION 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. */ static const char ST506[] = "ST506"; #define EFLASHIORETRIES_SINGLE 4 /* number of retries before single-sector */ #define EFLASHIORETRIES 5 /* number of retries before giving up */ #define RECOVERYTIME hz/2 /* time to wait before retrying a cmd */ #define EFLASHUNIT(dev) DISKUNIT(dev) #define EFLASHPART(dev) DISKPART(dev) #define EFLASHMINOR(unit, part) DISKMINOR(unit, part) #define MAKEEFLASHDEV(maj, unit, part) MAKEDISKDEV(maj, unit, part) #define EFLASHLABELDEV(dev) (MAKEEFLASHDEV(major(dev), EFLASHUNIT(dev), RAW_PART)) void eflashperror(const struct eflash_softc *); extern struct cfdriver eflash_cd; dev_type_open(eflashopen); dev_type_close(eflashclose); dev_type_read(eflashread); dev_type_write(eflashwrite); dev_type_ioctl(eflashioctl); dev_type_strategy(eflashstrategy); dev_type_dump(eflashdump); dev_type_size(eflashsize); const struct bdevsw eflash_bdevsw = { .d_open = eflashopen, .d_close = eflashclose, .d_strategy = eflashstrategy, .d_ioctl = eflashioctl, .d_dump = eflashdump, .d_psize = eflashsize, .d_discard = nodiscard, .d_flag = D_DISK }; const struct cdevsw eflash_cdevsw = { .d_open = eflashopen, .d_close = eflashclose, .d_read = eflashread, .d_write = eflashwrite, .d_ioctl = eflashioctl, .d_stop = nostop, .d_tty = notty, .d_poll = nopoll, .d_mmap = nommap, .d_kqfilter = nokqfilter, .d_discard = nodiscard, .d_flag = D_DISK }; void eflashgetdefaultlabel(struct eflash_softc *, struct disklabel *); void eflashgetdisklabel(struct eflash_softc *); void eflashstart(void *); void __eflashstart(struct eflash_softc *, struct buf *); void eflashrestart(void *); void eflashattach(struct eflash_softc *); int eflashdetach(device_t, int); int eflashactivate(device_t, enum devact); void eflashdone(struct eflash_softc *); static void eflash_set_geometry(struct eflash_softc *sc); struct dkdriver eflashdkdriver = { .d_strategy = eflashstrategy, .d_minphys = minphys }; #ifdef HAS_BAD144_HANDLING static void bad144intern(struct eflash_softc *); #endif static void eflash_wedges(void *arg); void eflashattach(struct eflash_softc *sc) { device_t self = sc->sc_dev; char pbuf[9]; DEBUG_PRINT(("%s: eflashattach\n", device_xname(sc->sc_dev)), DEBUG_FUNCS | DEBUG_PROBE); callout_init(&sc->sc_restart_ch, 0); bufq_alloc(&sc->sc_q, BUFQ_DISK_DEFAULT_STRAT, BUFQ_SORT_RAWBLOCK); sc->openings = 1; /* wazziz?*/ aprint_naive("\n"); /* setup all required fields so that if the attach fails we are ok */ sc->sc_dk.dk_driver = &eflashdkdriver; sc->sc_dk.dk_name = device_xname(sc->sc_dev); format_bytes(pbuf, sizeof(pbuf), sc->sc_capacity * DEV_BSIZE); aprint_normal("%s: %s, %d cyl, %d head, %d sec, %d bytes/sect x %llu sectors\n", device_xname(self), pbuf, 1, 1, sc->sc_capacity, DEV_BSIZE, (unsigned long long)sc->sc_capacity); eflash_set_geometry(sc); /* * Attach the disk structure. We fill in dk_info later. */ disk_attach(&sc->sc_dk); rnd_attach_source(&sc->rnd_source, device_xname(sc->sc_dev), RND_TYPE_DISK, RND_FLAG_DEFAULT); } int eflashactivate(device_t self, enum devact act) { int rv = 0; DEBUG_PRINT(("eflashactivate %x\n", act), DEBUG_FUNCS | DEBUG_PROBE); switch (act) { case DVACT_DEACTIVATE: /* * Nothing to do; we key off the device's DVF_ACTIVATE. */ break; default: rv = EOPNOTSUPP; break; } return (rv); } int eflashdetach(device_t self, int flags) { struct eflash_softc *sc = device_private(self); int s, bmaj, cmaj, i, mn; DEBUG_PRINT(("%s: eflashdetach\n", device_xname(sc->sc_dev)), DEBUG_FUNCS | DEBUG_PROBE); /* locate the major number */ bmaj = bdevsw_lookup_major(&eflash_bdevsw); cmaj = cdevsw_lookup_major(&eflash_cdevsw); /* Nuke the vnodes for any open instances. */ for (i = 0; i < MAXPARTITIONS; i++) { mn = EFLASHMINOR(device_unit(self), i); vdevgone(bmaj, mn, mn, VBLK); vdevgone(cmaj, mn, mn, VCHR); } /* Delete all of our wedges. */ dkwedge_delall(&sc->sc_dk); s = splbio(); /* Kill off any queued buffers. */ bufq_drain(sc->sc_q); /*sc->atabus->ata_killpending(sc->drvp);*/ splx(s); bufq_free(sc->sc_q); /* Detach disk. */ disk_detach(&sc->sc_dk); /* Unhook the entropy source. */ rnd_detach_source(&sc->rnd_source); /*sc->drvp->drive_flags = 0; -- no drive any more here */ return (0); } extern int dkwedge_autodiscover; /* Aux temp thread to avoid deadlock when doing the partitio.. ahem wedges thing. */ static void eflash_wedges(void *arg) { struct eflash_softc *sc = (struct eflash_softc*)arg; DBGME(DEBUG_STATUS,printf("%s: wedges started for %p\n", sc->sc_dk.dk_name, sc)); /* Discover wedges on this disk. */ dkwedge_autodiscover = 1; dkwedge_discover(&sc->sc_dk); config_pending_decr(sc->sc_dev); DBGME(DEBUG_STATUS,printf("%s: wedges thread done for %p\n", device_xname(sc->sc_dev), sc)); kthread_exit(0); } static void eflash_thread(void *arg) { struct eflash_softc *sc = (struct eflash_softc*)arg; struct buf *bp; vaddr_t addr; int s, error; DBGME(DEBUG_STATUS,printf("%s: thread started for %p\n", device_xname(sc->sc_dev), sc)); s = splbio(); eflashattach(sc); splx(s); /* Allocate a VM window large enough to map the largest sector * BUGBUG We could risk it and allocate/free on open/close? */ addr = uvm_km_alloc(kernel_map, sc->sc_max_secsize, 0, UVM_KMF_VAONLY); if (addr == 0) panic("eflash_thread: kernel map full (%lx)", (long unsigned)sc->sc_max_secsize); sc->sc_sector = (/*volatile*/ uint8_t *) addr; sc->sc_sector_size = 0; sc->sc_sector_offset = NOSECTOR; error = kthread_create(PRI_NONE, 0, NULL, eflash_wedges, sc, NULL, "%s.wedges", device_xname(sc->sc_dev)); if (error) { aprint_error_dev(sc->sc_dev, "wedges: unable to create kernel " "thread: error %d\n", error); /* XXX: why continue? */ } DBGME(DEBUG_STATUS,printf("%s: thread service active for %p\n", device_xname(sc->sc_dev), sc)); s = splbio(); for (;;) { /* Get next I/O request, wait if necessary */ if ((sc->ch_flags & (ATACH_TH_RESET | ATACH_SHUTDOWN)) == 0 && (sc->active_xfer == NULL)) { sc->ch_flags &= ~ATACH_TH_RUN; (void) tsleep(&sc->ch_thread, PRIBIO, "eflashth", 0); sc->ch_flags |= ATACH_TH_RUN; } if (sc->ch_flags & ATACH_SHUTDOWN) { break; } bp = sc->active_xfer; sc->active_xfer = NULL; if (bp != NULL) { size_t sz = DEV_BSIZE, bnow; DBGME(DEBUG_XFERS,printf("%s: task %p %x %p %qx %d (%zd)\n", device_xname(sc->sc_dev), bp, sc->sc_bio.flags, sc->sc_bio.databuf, sc->sc_bio.blkno, sc->sc_bio.nbytes, sc->sc_bio.nblks)); sc->sc_bio.error = 0; for (; sc->sc_bio.nblks > 0;) { bnow = sc->sc_bio.nblks; if (sc->sc_bio.flags & ATA_SINGLE) bnow = 1; if (sc->sc_bio.flags & ATA_READ) { sc->sc_bio.error = eflash_read_at(sc, sc->sc_bio.blkno, sc->sc_bio.databuf, bnow, &sz); } else { sc->sc_bio.error = eflash_write_at(sc, sc->sc_bio.blkno, sc->sc_bio.databuf, bnow, &sz); } if (sc->sc_bio.error) break; sc->sc_bio.blkno += sz; /* in blocks */ sc->sc_bio.nblks -= sz; sc->sc_bio.blkdone += sz; sz = sz << DEV_BSHIFT; /* in bytes */ sc->sc_bio.databuf += sz; sc->sc_bio.nbytes -= sz; } eflashdone(sc); } } splx(s); sc->ch_thread = NULL; wakeup(&sc->ch_flags); DBGME(DEBUG_STATUS,printf("%s: thread service terminated for %p\n", device_xname(sc->sc_dev), sc)); kthread_exit(0); } /* * Read/write routine for a buffer. Validates the arguments and schedules the * transfer. Does not wait for the transfer to complete. */ void eflashstrategy(struct buf *bp) { struct eflash_softc *sc = device_lookup_private(&eflash_cd, EFLASHUNIT(bp->b_dev)); struct disklabel *lp = sc->sc_dk.dk_label; daddr_t blkno; int s; DEBUG_PRINT(("%s: eflashstrategy %lld\n", device_xname(sc->sc_dev), bp->b_blkno), DEBUG_XFERS); /* Valid request? */ if (bp->b_blkno < 0 || (bp->b_bcount % lp->d_secsize) != 0 || (bp->b_bcount / lp->d_secsize) >= (1 << NBBY)) { bp->b_error = EINVAL; goto done; } /* If device invalidated (e.g. media change, door open), error. */ if ((sc->sc_flags & EFLASHF_LOADED) == 0) { bp->b_error = EIO; goto done; } /* If it's a null transfer, return immediately. */ if (bp->b_bcount == 0) goto done; /* * Do bounds checking, adjust transfer. if error, process. * If end of partition, just return. */ if (EFLASHPART(bp->b_dev) == RAW_PART) { if (bounds_check_with_mediasize(bp, DEV_BSIZE, sc->sc_capacity) <= 0) goto done; } else { if (bounds_check_with_label(&sc->sc_dk, bp, (sc->sc_flags & (EFLASHF_WLABEL|EFLASHF_LABELLING)) != 0) <= 0) goto done; } /* * Now convert the block number to absolute and put it in * terms of the device's logical block size. */ if (lp->d_secsize >= DEV_BSIZE) blkno = bp->b_blkno / (lp->d_secsize / DEV_BSIZE); else blkno = bp->b_blkno * (DEV_BSIZE / lp->d_secsize); if (EFLASHPART(bp->b_dev) != RAW_PART) blkno += lp->d_partitions[EFLASHPART(bp->b_dev)].p_offset; bp->b_rawblkno = blkno; /* Queue transfer on drive, activate drive and controller if idle. */ s = splbio(); bufq_put(sc->sc_q, bp); eflashstart(sc); splx(s); return; done: /* Toss transfer; we're done early. */ bp->b_resid = bp->b_bcount; biodone(bp); } /* * Queue a drive for I/O. */ void eflashstart(void *arg) { struct eflash_softc *sc = arg; struct buf *bp = NULL; DEBUG_PRINT(("%s: eflashstart\n", device_xname(sc->sc_dev)), DEBUG_XFERS); while (sc->openings > 0) { /* Is there a buf for us ? */ if ((bp = bufq_get(sc->sc_q)) == NULL) return; /* * Make the command. First lock the device */ sc->openings--; sc->retries = 0; __eflashstart(sc, bp); } } void __eflashstart(struct eflash_softc *sc, struct buf *bp) { DEBUG_PRINT(("%s: __eflashstart %p\n", device_xname(sc->sc_dev), bp), DEBUG_XFERS); sc->sc_bp = bp; /* * If we're retrying, retry in single-sector mode. This will give us * the sector number of the problem, and will eventually allow the * transfer to succeed. */ if (sc->retries >= EFLASHIORETRIES_SINGLE) sc->sc_bio.flags = ATA_SINGLE; else sc->sc_bio.flags = 0; if (bp->b_flags & B_READ) sc->sc_bio.flags |= ATA_READ; sc->sc_bio.blkno = bp->b_rawblkno; sc->sc_bio.blkdone = 0; sc->sc_bio.nbytes = bp->b_bcount; sc->sc_bio.nblks = bp->b_bcount >> DEV_BSHIFT; sc->sc_bio.databuf = bp->b_data; /* Instrumentation. */ disk_busy(&sc->sc_dk); sc->active_xfer = bp; wakeup(&sc->ch_thread); } void eflashdone(struct eflash_softc *sc) { struct buf *bp = sc->sc_bp; const char *errmsg; int do_perror = 0; DEBUG_PRINT(("%s: eflashdone %p\n", device_xname(sc->sc_dev), bp), DEBUG_XFERS); if (bp == NULL) return; bp->b_resid = sc->sc_bio.nbytes; switch (sc->sc_bio.error) { case ETIMEDOUT: errmsg = "device timeout"; do_perror = 1; goto retry; case EBUSY: errmsg = "device stuck"; retry: /* Just reset and retry. Can we do more ? */ /*eflash_reset(sc);*/ diskerr(bp, "flash", errmsg, LOG_PRINTF, sc->sc_bio.blkdone, sc->sc_dk.dk_label); if (sc->retries < EFLASHIORETRIES) printf(", retrying"); printf("\n"); if (do_perror) eflashperror(sc); if (sc->retries < EFLASHIORETRIES) { sc->retries++; callout_reset(&sc->sc_restart_ch, RECOVERYTIME, eflashrestart, sc); return; } bp->b_error = EIO; break; case 0: if ((sc->sc_bio.flags & ATA_CORR) || sc->retries > 0) printf("%s: soft error (corrected)\n", device_xname(sc->sc_dev)); break; case ENODEV: case E2BIG: bp->b_error = EIO; break; } disk_unbusy(&sc->sc_dk, (bp->b_bcount - bp->b_resid), (bp->b_flags & B_READ)); rnd_add_uint32(&sc->rnd_source, bp->b_blkno); biodone(bp); sc->openings++; eflashstart(sc); } void eflashrestart(void *v) { struct eflash_softc *sc = v; struct buf *bp = sc->sc_bp; int s; DEBUG_PRINT(("%s: eflashrestart\n", device_xname(sc->sc_dev)), DEBUG_XFERS); s = splbio(); __eflashstart(v, bp); splx(s); } int eflashread(dev_t dev, struct uio *uio, int flags) { DEBUG_PRINT(("eflashread\n"), DEBUG_XFERS); return (physio(eflashstrategy, NULL, dev, B_READ, minphys, uio)); } int eflashwrite(dev_t dev, struct uio *uio, int flags) { DEBUG_PRINT(("eflashwrite\n"), DEBUG_XFERS); return (physio(eflashstrategy, NULL, dev, B_WRITE, minphys, uio)); } int eflashopen(dev_t dev, int flag, int fmt, struct lwp *l) { struct eflash_softc *sc; int part, error; DEBUG_PRINT(("eflashopen %" PRIx64 "\n", dev), DEBUG_FUNCS); sc = device_lookup_private(&eflash_cd, EFLASHUNIT(dev)); if (sc == NULL) return (ENXIO); if (! device_is_active(sc->sc_dev)) return (ENODEV); part = EFLASHPART(dev); mutex_enter(&sc->sc_dk.dk_openlock); /* * If there are wedges, and this is not RAW_PART, then we * need to fail. */ if (sc->sc_dk.dk_nwedges != 0 && part != RAW_PART) { error = EBUSY; goto bad; } if (sc->sc_dk.dk_openmask != 0) { /* * If any partition is open, but the disk has been invalidated, * disallow further opens. */ if ((sc->sc_flags & EFLASHF_LOADED) == 0) { error = EIO; goto bad; } } else { if ((sc->sc_flags & EFLASHF_LOADED) == 0) { sc->sc_flags |= EFLASHF_LOADED; /* Load the partition info if not already loaded. */ eflashgetdisklabel(sc); } } /* Check that the partition exists. */ if (part != RAW_PART && (part >= sc->sc_dk.dk_label->d_npartitions || sc->sc_dk.dk_label->d_partitions[part].p_fstype == FS_UNUSED)) { error = ENXIO; goto bad; } /* Insure only one open at a time. */ switch (fmt) { case S_IFCHR: sc->sc_dk.dk_copenmask |= (1 << part); break; case S_IFBLK: sc->sc_dk.dk_bopenmask |= (1 << part); break; } sc->sc_dk.dk_openmask = sc->sc_dk.dk_copenmask | sc->sc_dk.dk_bopenmask; mutex_exit(&sc->sc_dk.dk_openlock); return 0; bad: mutex_exit(&sc->sc_dk.dk_openlock); DEBUG_PRINT(("%s: eflashopen -> %d\n", device_xname(sc->sc_dev), error), DEBUG_XFERS); return error; } int eflashclose(dev_t dev, int flag, int fmt, struct lwp *l) { struct eflash_softc *sc = device_lookup_private(&eflash_cd, EFLASHUNIT(dev)); int part = EFLASHPART(dev); DEBUG_PRINT(("eflashclose %" PRIx64 "\n", dev), DEBUG_FUNCS); mutex_enter(&sc->sc_dk.dk_openlock); switch (fmt) { case S_IFCHR: sc->sc_dk.dk_copenmask &= ~(1 << part); break; case S_IFBLK: sc->sc_dk.dk_bopenmask &= ~(1 << part); break; } sc->sc_dk.dk_openmask = sc->sc_dk.dk_copenmask | sc->sc_dk.dk_bopenmask; if (sc->sc_dk.dk_openmask == 0) { if (! (sc->sc_flags & EFLASHF_KLABEL)) sc->sc_flags &= ~EFLASHF_LOADED; DEBUG_PRINT(("%s: eflashclose flg %x\n", device_xname(sc->sc_dev), sc->sc_flags), DEBUG_XFERS); } mutex_exit(&sc->sc_dk.dk_openlock); return 0; } void eflashgetdefaultlabel(struct eflash_softc *sc, struct disklabel *lp) { DEBUG_PRINT(("%s: eflashgetdefaultlabel\n", device_xname(sc->sc_dev)), DEBUG_FUNCS); memset(lp, 0, sizeof(struct disklabel)); lp->d_secsize = DEV_BSIZE; lp->d_ntracks = 1; lp->d_nsectors = sc->sc_capacity; lp->d_ncylinders = 1; lp->d_secpercyl = lp->d_ntracks * lp->d_nsectors; lp->d_type = DKTYPE_ST506; /* ?!? */ strncpy(lp->d_typename, ST506, 16); strncpy(lp->d_packname, "fictitious", 16); if (sc->sc_capacity > UINT32_MAX) lp->d_secperunit = UINT32_MAX; else lp->d_secperunit = sc->sc_capacity; lp->d_rpm = 3600; lp->d_interleave = 1; lp->d_flags = 0; lp->d_partitions[RAW_PART].p_offset = 0; lp->d_partitions[RAW_PART].p_size = lp->d_secperunit * (lp->d_secsize / DEV_BSIZE); lp->d_partitions[RAW_PART].p_fstype = FS_UNUSED; lp->d_npartitions = RAW_PART + 1; lp->d_magic = DISKMAGIC; lp->d_magic2 = DISKMAGIC; lp->d_checksum = dkcksum(lp); } /* * Fabricate a default disk label, and try to read the correct one. */ void eflashgetdisklabel(struct eflash_softc *sc) { struct disklabel *lp = sc->sc_dk.dk_label; const char *errstring; DEBUG_PRINT(("%s: eflashgetdisklabel\n", device_xname(sc->sc_dev)), DEBUG_FUNCS); memset(sc->sc_dk.dk_cpulabel, 0, sizeof(struct cpu_disklabel)); eflashgetdefaultlabel(sc, lp); #ifdef HAS_BAD144_HANDLING sc->sc_bio.badsect[0] = -1; #endif /* BUGBUG: maj==0?? why is this not EFLASHLABELDEV(??sc->sc_dev) */ errstring = readdisklabel(MAKEEFLASHDEV(0, device_unit(sc->sc_dev), RAW_PART), eflashstrategy, lp, sc->sc_dk.dk_cpulabel); if (errstring) { printf("%s: %s\n", device_xname(sc->sc_dev), errstring); return; } #if DEBUG if (EFLASH_DEBUG(DEBUG_WRITES)) { int i, n = sc->sc_dk.dk_label->d_npartitions; printf("%s: %d parts\n", device_xname(sc->sc_dev), n); for (i = 0; i < n; i++) { printf("\t[%d]: t=%x s=%d o=%d\n", i, sc->sc_dk.dk_label->d_partitions[i].p_fstype, sc->sc_dk.dk_label->d_partitions[i].p_size, sc->sc_dk.dk_label->d_partitions[i].p_offset); } } #endif #ifdef HAS_BAD144_HANDLING if ((lp->d_flags & D_BADSECT) != 0) bad144intern(sc); #endif } void eflashperror(const struct eflash_softc *sc) { const char *devname = device_xname(sc->sc_dev); u_int32_t Status = sc->sc_bio.r_error; printf("%s: (", devname); if (Status == 0) printf("error not notified"); else printf("status=x%x", Status); printf(")\n"); } int eflashioctl(dev_t dev, u_long xfer, void *addr, int flag, struct lwp *l) { struct eflash_softc *sc = device_lookup_private(&eflash_cd, EFLASHUNIT(dev)); int error = 0, s; DEBUG_PRINT(("eflashioctl(%lx)\n",xfer), DEBUG_FUNCS); if ((sc->sc_flags & EFLASHF_LOADED) == 0) return EIO; error = disk_ioctl(&sc->sc_dk, dev, xfer, addr, flag, l); if (error != EPASSTHROUGH) return (error); switch (xfer) { #ifdef HAS_BAD144_HANDLING case DIOCSBAD: if ((flag & FWRITE) == 0) return EBADF; sc->sc_dk.dk_cpulabel->bad = *(struct dkbad *)addr; sc->sc_dk.dk_label->d_flags |= D_BADSECT; bad144intern(sc); return 0; #endif case DIOCWDINFO: case DIOCSDINFO: { struct disklabel *lp; if ((flag & FWRITE) == 0) return EBADF; lp = (struct disklabel *)addr; mutex_enter(&sc->sc_dk.dk_openlock); sc->sc_flags |= EFLASHF_LABELLING; error = setdisklabel(sc->sc_dk.dk_label, lp, /*sc->sc_dk.dk_openmask : */0, sc->sc_dk.dk_cpulabel); if (error == 0) { if (xfer == DIOCWDINFO) error = writedisklabel(EFLASHLABELDEV(dev), eflashstrategy, sc->sc_dk.dk_label, sc->sc_dk.dk_cpulabel); } sc->sc_flags &= ~EFLASHF_LABELLING; mutex_exit(&sc->sc_dk.dk_openlock); return error; } case DIOCKLABEL: if (*(int *)addr) sc->sc_flags |= EFLASHF_KLABEL; else sc->sc_flags &= ~EFLASHF_KLABEL; return 0; case DIOCWLABEL: if ((flag & FWRITE) == 0) return EBADF; if (*(int *)addr) sc->sc_flags |= EFLASHF_WLABEL; else sc->sc_flags &= ~EFLASHF_WLABEL; return 0; case DIOCGDEFLABEL: eflashgetdefaultlabel(sc, (struct disklabel *)addr); return 0; case DIOCCACHESYNC: return 0; case DIOCGSTRATEGY: { struct disk_strategy *dks = (void *)addr; s = splbio(); strlcpy(dks->dks_name, bufq_getstrategyname(sc->sc_q), sizeof(dks->dks_name)); splx(s); dks->dks_paramlen = 0; return 0; } case DIOCSSTRATEGY: { struct disk_strategy *dks = (void *)addr; struct bufq_state *new; struct bufq_state *old; if ((flag & FWRITE) == 0) { return EBADF; } if (dks->dks_param != NULL) { return EINVAL; } dks->dks_name[sizeof(dks->dks_name) - 1] = 0; /* ensure term */ error = bufq_alloc(&new, dks->dks_name, BUFQ_EXACT|BUFQ_SORT_RAWBLOCK); if (error) { return error; } s = splbio(); old = sc->sc_q; bufq_move(new, old); sc->sc_q = new; splx(s); bufq_free(old); return 0; } default: /* NB: we get a DIOCGWEDGEINFO, but nobody else handles it either */ DEBUG_PRINT(("eflashioctl: unsup x%lx\n", xfer), DEBUG_FUNCS); return ENOTTY; } } int eflashsize(dev_t dev) { struct eflash_softc *sc; int part, omask; int size; DEBUG_PRINT(("eflashsize\n"), DEBUG_FUNCS); sc = device_lookup_private(&eflash_cd, EFLASHUNIT(dev)); if (sc == NULL) return (-1); part = EFLASHPART(dev); omask = sc->sc_dk.dk_openmask & (1 << part); if (omask == 0 && eflashopen(dev, 0, S_IFBLK, NULL) != 0) return (-1); if (sc->sc_dk.dk_label->d_partitions[part].p_fstype != FS_SWAP) size = -1; else size = sc->sc_dk.dk_label->d_partitions[part].p_size * (sc->sc_dk.dk_label->d_secsize / DEV_BSIZE); if (omask == 0 && eflashclose(dev, 0, S_IFBLK, NULL) != 0) return (-1); return (size); } /* * Dump core after a system crash. */ int eflashdump(dev_t dev, daddr_t blkno, void *va, size_t size) { /* no we dont */ return (ENXIO); } #ifdef HAS_BAD144_HANDLING /* * Internalize the bad sector table. */ void bad144intern(struct eflash_softc *sc) { struct dkbad *bt = &sc->sc_dk.dk_cpulabel->bad; struct disklabel *lp = sc->sc_dk.dk_label; int i = 0; DEBUG_PRINT(("bad144intern\n"), DEBUG_XFERS); for (; i < NBT_BAD; i++) { if (bt->bt_bad[i].bt_cyl == 0xffff) break; sc->sc_bio.badsect[i] = bt->bt_bad[i].bt_cyl * lp->d_secpercyl + (bt->bt_bad[i].bt_trksec >> 8) * lp->d_nsectors + (bt->bt_bad[i].bt_trksec & 0xff); } for (; i < NBT_BAD+1; i++) sc->sc_bio.badsect[i] = -1; } #endif static void eflash_set_geometry(struct eflash_softc *sc) { struct disk_geom *dg = &sc->sc_dk.dk_geom; memset(dg, 0, sizeof(*dg)); dg->dg_secperunit = sc->sc_capacity; dg->dg_secsize = DEV_BSIZE /* XXX 512? */; dg->dg_nsectors = sc->sc_capacity; dg->dg_ntracks = 1; dg->dg_ncylinders = sc->sc_capacity; disk_set_info(sc->sc_dev, &sc->sc_dk, ST506); }