// SPDX-License-Identifier: GPL-2.0-or-later /* * Device driver for the SYMBIOS/LSILOGIC 53C8XX and 53C1010 family * of PCI-SCSI IO processors. * * Copyright (C) 1999-2001 Gerard Roudier <[email protected]> * * This driver is derived from the Linux sym53c8xx driver. * Copyright (C) 1998-2000 Gerard Roudier * * The sym53c8xx driver is derived from the ncr53c8xx driver that had been * a port of the FreeBSD ncr driver to Linux-1.2.13. * * The original ncr driver has been written for 386bsd and FreeBSD by * Wolfgang Stanglmeier <[email protected]> * Stefan Esser <[email protected]> * Copyright (C) 1994 Wolfgang Stanglmeier * * Other major contributions: * * NVRAM detection and reading. * Copyright (C) 1997 Richard Waltham <[email protected]> * *----------------------------------------------------------------------------- */ #include "sym_glue.h" #include "sym_nvram.h" #ifdef SYM_CONF_DEBUG_NVRAM static u_char Tekram_boot_delay[7] = {3, 5, 10, 20, 30, 60, 120}; #endif /* * Get host setup from NVRAM. */ void sym_nvram_setup_host(struct Scsi_Host *shost, struct sym_hcb *np, struct sym_nvram *nvram) { … } /* * Get target set-up from Symbios format NVRAM. */ static void sym_Symbios_setup_target(struct sym_tcb *tp, int target, Symbios_nvram *nvram) { … } static const unsigned char Tekram_sync[16] = …; /* * Get target set-up from Tekram format NVRAM. */ static void sym_Tekram_setup_target(struct sym_tcb *tp, int target, Tekram_nvram *nvram) { … } /* * Get target setup from NVRAM. */ void sym_nvram_setup_target(struct sym_tcb *tp, int target, struct sym_nvram *nvp) { … } #ifdef SYM_CONF_DEBUG_NVRAM /* * Dump Symbios format NVRAM for debugging purpose. */ static void sym_display_Symbios_nvram(struct sym_device *np, Symbios_nvram *nvram) { int i; /* display Symbios nvram host data */ printf("%s: HOST ID=%d%s%s%s%s%s%s\n", sym_name(np), nvram->host_id & 0x0f, (nvram->flags & SYMBIOS_SCAM_ENABLE) ? " SCAM" :"", (nvram->flags & SYMBIOS_PARITY_ENABLE) ? " PARITY" :"", (nvram->flags & SYMBIOS_VERBOSE_MSGS) ? " VERBOSE" :"", (nvram->flags & SYMBIOS_CHS_MAPPING) ? " CHS_ALT" :"", (nvram->flags2 & SYMBIOS_AVOID_BUS_RESET)?" NO_RESET" :"", (nvram->flags1 & SYMBIOS_SCAN_HI_LO) ? " HI_LO" :""); /* display Symbios nvram drive data */ for (i = 0 ; i < 15 ; i++) { struct Symbios_target *tn = &nvram->target[i]; printf("%s-%d:%s%s%s%s WIDTH=%d SYNC=%d TMO=%d\n", sym_name(np), i, (tn->flags & SYMBIOS_DISCONNECT_ENABLE) ? " DISC" : "", (tn->flags & SYMBIOS_SCAN_AT_BOOT_TIME) ? " SCAN_BOOT" : "", (tn->flags & SYMBIOS_SCAN_LUNS) ? " SCAN_LUNS" : "", (tn->flags & SYMBIOS_QUEUE_TAGS_ENABLED)? " TCQ" : "", tn->bus_width, tn->sync_period / 4, tn->timeout); } } /* * Dump TEKRAM format NVRAM for debugging purpose. */ static void sym_display_Tekram_nvram(struct sym_device *np, Tekram_nvram *nvram) { int i, tags, boot_delay; char *rem; /* display Tekram nvram host data */ tags = 2 << nvram->max_tags_index; boot_delay = 0; if (nvram->boot_delay_index < 6) boot_delay = Tekram_boot_delay[nvram->boot_delay_index]; switch ((nvram->flags & TEKRAM_REMOVABLE_FLAGS) >> 6) { default: case 0: rem = ""; break; case 1: rem = " REMOVABLE=boot device"; break; case 2: rem = " REMOVABLE=all"; break; } printf("%s: HOST ID=%d%s%s%s%s%s%s%s%s%s BOOT DELAY=%d tags=%d\n", sym_name(np), nvram->host_id & 0x0f, (nvram->flags1 & SYMBIOS_SCAM_ENABLE) ? " SCAM" :"", (nvram->flags & TEKRAM_MORE_THAN_2_DRIVES) ? " >2DRIVES":"", (nvram->flags & TEKRAM_DRIVES_SUP_1GB) ? " >1GB" :"", (nvram->flags & TEKRAM_RESET_ON_POWER_ON) ? " RESET" :"", (nvram->flags & TEKRAM_ACTIVE_NEGATION) ? " ACT_NEG" :"", (nvram->flags & TEKRAM_IMMEDIATE_SEEK) ? " IMM_SEEK" :"", (nvram->flags & TEKRAM_SCAN_LUNS) ? " SCAN_LUNS" :"", (nvram->flags1 & TEKRAM_F2_F6_ENABLED) ? " F2_F6" :"", rem, boot_delay, tags); /* display Tekram nvram drive data */ for (i = 0; i <= 15; i++) { int sync, j; struct Tekram_target *tn = &nvram->target[i]; j = tn->sync_index & 0xf; sync = Tekram_sync[j]; printf("%s-%d:%s%s%s%s%s%s PERIOD=%d\n", sym_name(np), i, (tn->flags & TEKRAM_PARITY_CHECK) ? " PARITY" : "", (tn->flags & TEKRAM_SYNC_NEGO) ? " SYNC" : "", (tn->flags & TEKRAM_DISCONNECT_ENABLE) ? " DISC" : "", (tn->flags & TEKRAM_START_CMD) ? " START" : "", (tn->flags & TEKRAM_TAGGED_COMMANDS) ? " TCQ" : "", (tn->flags & TEKRAM_WIDE_NEGO) ? " WIDE" : "", sync); } } #else static void sym_display_Symbios_nvram(struct sym_device *np, Symbios_nvram *nvram) { … } static void sym_display_Tekram_nvram(struct sym_device *np, Tekram_nvram *nvram) { … } #endif /* SYM_CONF_DEBUG_NVRAM */ /* * 24C16 EEPROM reading. * * GPIO0 - data in/data out * GPIO1 - clock * Symbios NVRAM wiring now also used by Tekram. */ #define SET_BIT … #define CLR_BIT … #define SET_CLK … #define CLR_CLK … /* * Set/clear data/clock bit in GPIO0 */ static void S24C16_set_bit(struct sym_device *np, u_char write_bit, u_char *gpreg, int bit_mode) { … } /* * Send START condition to NVRAM to wake it up. */ static void S24C16_start(struct sym_device *np, u_char *gpreg) { … } /* * Send STOP condition to NVRAM - puts NVRAM to sleep... ZZzzzz!! */ static void S24C16_stop(struct sym_device *np, u_char *gpreg) { … } /* * Read or write a bit to the NVRAM, * read if GPIO0 input else write if GPIO0 output */ static void S24C16_do_bit(struct sym_device *np, u_char *read_bit, u_char write_bit, u_char *gpreg) { … } /* * Output an ACK to the NVRAM after reading, * change GPIO0 to output and when done back to an input */ static void S24C16_write_ack(struct sym_device *np, u_char write_bit, u_char *gpreg, u_char *gpcntl) { … } /* * Input an ACK from NVRAM after writing, * change GPIO0 to input and when done back to an output */ static void S24C16_read_ack(struct sym_device *np, u_char *read_bit, u_char *gpreg, u_char *gpcntl) { … } /* * WRITE a byte to the NVRAM and then get an ACK to see it was accepted OK, * GPIO0 must already be set as an output */ static void S24C16_write_byte(struct sym_device *np, u_char *ack_data, u_char write_data, u_char *gpreg, u_char *gpcntl) { … } /* * READ a byte from the NVRAM and then send an ACK to say we have got it, * GPIO0 must already be set as an input */ static void S24C16_read_byte(struct sym_device *np, u_char *read_data, u_char ack_data, u_char *gpreg, u_char *gpcntl) { … } #ifdef SYM_CONF_NVRAM_WRITE_SUPPORT /* * Write 'len' bytes starting at 'offset'. */ static int sym_write_S24C16_nvram(struct sym_device *np, int offset, u_char *data, int len) { u_char gpcntl, gpreg; u_char old_gpcntl, old_gpreg; u_char ack_data; int x; /* save current state of GPCNTL and GPREG */ old_gpreg = INB(np, nc_gpreg); old_gpcntl = INB(np, nc_gpcntl); gpcntl = old_gpcntl & 0x1c; /* set up GPREG & GPCNTL to set GPIO0 and GPIO1 in to known state */ OUTB(np, nc_gpreg, old_gpreg); OUTB(np, nc_gpcntl, gpcntl); /* this is to set NVRAM into a known state with GPIO0/1 both low */ gpreg = old_gpreg; S24C16_set_bit(np, 0, &gpreg, CLR_CLK); S24C16_set_bit(np, 0, &gpreg, CLR_BIT); /* now set NVRAM inactive with GPIO0/1 both high */ S24C16_stop(np, &gpreg); /* NVRAM has to be written in segments of 16 bytes */ for (x = 0; x < len ; x += 16) { do { S24C16_start(np, &gpreg); S24C16_write_byte(np, &ack_data, 0xa0 | (((offset+x) >> 7) & 0x0e), &gpreg, &gpcntl); } while (ack_data & 0x01); S24C16_write_byte(np, &ack_data, (offset+x) & 0xff, &gpreg, &gpcntl); for (y = 0; y < 16; y++) S24C16_write_byte(np, &ack_data, data[x+y], &gpreg, &gpcntl); S24C16_stop(np, &gpreg); } /* return GPIO0/1 to original states after having accessed NVRAM */ OUTB(np, nc_gpcntl, old_gpcntl); OUTB(np, nc_gpreg, old_gpreg); return 0; } #endif /* SYM_CONF_NVRAM_WRITE_SUPPORT */ /* * Read 'len' bytes starting at 'offset'. */ static int sym_read_S24C16_nvram(struct sym_device *np, int offset, u_char *data, int len) { … } #undef SET_BIT #undef CLR_BIT #undef SET_CLK #undef CLR_CLK /* * Try reading Symbios NVRAM. * Return 0 if OK. */ static int sym_read_Symbios_nvram(struct sym_device *np, Symbios_nvram *nvram) { … } /* * 93C46 EEPROM reading. * * GPIO0 - data in * GPIO1 - data out * GPIO2 - clock * GPIO4 - chip select * * Used by Tekram. */ /* * Pulse clock bit in GPIO0 */ static void T93C46_Clk(struct sym_device *np, u_char *gpreg) { … } /* * Read bit from NVRAM */ static void T93C46_Read_Bit(struct sym_device *np, u_char *read_bit, u_char *gpreg) { … } /* * Write bit to GPIO0 */ static void T93C46_Write_Bit(struct sym_device *np, u_char write_bit, u_char *gpreg) { … } /* * Send STOP condition to NVRAM - puts NVRAM to sleep... ZZZzzz!! */ static void T93C46_Stop(struct sym_device *np, u_char *gpreg) { … } /* * Send read command and address to NVRAM */ static void T93C46_Send_Command(struct sym_device *np, u_short write_data, u_char *read_bit, u_char *gpreg) { … } /* * READ 2 bytes from the NVRAM */ static void T93C46_Read_Word(struct sym_device *np, unsigned short *nvram_data, unsigned char *gpreg) { … } /* * Read Tekram NvRAM data. */ static int T93C46_Read_Data(struct sym_device *np, unsigned short *data, int len, unsigned char *gpreg) { … } /* * Try reading 93C46 Tekram NVRAM. */ static int sym_read_T93C46_nvram(struct sym_device *np, Tekram_nvram *nvram) { … } /* * Try reading Tekram NVRAM. * Return 0 if OK. */ static int sym_read_Tekram_nvram (struct sym_device *np, Tekram_nvram *nvram) { … } #ifdef CONFIG_PARISC /* * Host firmware (PDC) keeps a table for altering SCSI capabilities. * Many newer machines export one channel of 53c896 chip as SE, 50-pin HD. * Also used for Multi-initiator SCSI clusters to set the SCSI Initiator ID. */ static int sym_read_parisc_pdc(struct sym_device *np, struct pdc_initiator *pdc) { struct hardware_path hwpath; get_pci_node_path(np->pdev, &hwpath); if (!pdc_get_initiator(&hwpath, pdc)) return 0; return SYM_PARISC_PDC; } #else static inline int sym_read_parisc_pdc(struct sym_device *np, struct pdc_initiator *x) { … } #endif /* * Try reading Symbios or Tekram NVRAM */ int sym_read_nvram(struct sym_device *np, struct sym_nvram *nvp) { … } char *sym_nvram_type(struct sym_nvram *nvp) { … }
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