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-rw-r--r--drivers/scsi/ibmmca.c2379
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diff --git a/drivers/scsi/ibmmca.c b/drivers/scsi/ibmmca.c
deleted file mode 100644
index cd09132d5d7..00000000000
--- a/drivers/scsi/ibmmca.c
+++ /dev/null
@@ -1,2379 +0,0 @@
-/*
- Low Level Linux Driver for the IBM Microchannel SCSI Subsystem for
- Linux Kernel >= 2.4.0.
- Copyright (c) 1995 Strom Systems, Inc. under the terms of the GNU
- General Public License. Written by Martin Kolinek, December 1995.
- Further development by: Chris Beauregard, Klaus Kudielka, Michael Lang
- See the file Documentation/scsi/ibmmca.txt for a detailed description
- of this driver, the commandline arguments and the history of its
- development.
- See the WWW-page: http://www.uni-mainz.de/~langm000/linux.html for latest
- updates, info and ADF-files for adapters supported by this driver.
-
- Alan Cox <alan@lxorguk.ukuu.org.uk>
- Updated for Linux 2.5.45 to use the new error handler, cleaned up the
- lock macros and did a few unavoidable locking tweaks, plus one locking
- fix in the irq and completion path.
-
- */
-
-#include <linux/module.h>
-#include <linux/kernel.h>
-#include <linux/types.h>
-#include <linux/ctype.h>
-#include <linux/string.h>
-#include <linux/interrupt.h>
-#include <linux/ioport.h>
-#include <linux/delay.h>
-#include <linux/blkdev.h>
-#include <linux/proc_fs.h>
-#include <linux/stat.h>
-#include <linux/mca.h>
-#include <linux/spinlock.h>
-#include <linux/init.h>
-
-#include <asm/io.h>
-
-#include "scsi.h"
-#include <scsi/scsi_host.h>
-
-/* Common forward declarations for all Linux-versions: */
-static int ibmmca_queuecommand (struct Scsi_Host *, struct scsi_cmnd *);
-static int ibmmca_abort (Scsi_Cmnd *);
-static int ibmmca_host_reset (Scsi_Cmnd *);
-static int ibmmca_biosparam (struct scsi_device *, struct block_device *, sector_t, int *);
-static int ibmmca_proc_info(struct Scsi_Host *shpnt, char *buffer, char **start, off_t offset, int length, int inout);
-
-
-
-/* current version of this driver-source: */
-#define IBMMCA_SCSI_DRIVER_VERSION "4.0b-ac"
-
-/* driver configuration */
-#define IM_MAX_HOSTS 8 /* maximum number of host adapters */
-#define IM_RESET_DELAY 60 /* seconds allowed for a reset */
-
-/* driver debugging - #undef all for normal operation */
-/* if defined: count interrupts and ignore this special one: */
-#undef IM_DEBUG_TIMEOUT //50
-#define TIMEOUT_PUN 0
-#define TIMEOUT_LUN 0
-/* verbose interrupt: */
-#undef IM_DEBUG_INT
-/* verbose queuecommand: */
-#undef IM_DEBUG_CMD
-/* verbose queucommand for specific SCSI-device type: */
-#undef IM_DEBUG_CMD_SPEC_DEV
-/* verbose device probing */
-#undef IM_DEBUG_PROBE
-
-/* device type that shall be displayed on syslog (only during debugging): */
-#define IM_DEBUG_CMD_DEVICE TYPE_TAPE
-
-/* relative addresses of hardware registers on a subsystem */
-#define IM_CMD_REG(h) ((h)->io_port) /*Command Interface, (4 bytes long) */
-#define IM_ATTN_REG(h) ((h)->io_port+4) /*Attention (1 byte) */
-#define IM_CTR_REG(h) ((h)->io_port+5) /*Basic Control (1 byte) */
-#define IM_INTR_REG(h) ((h)->io_port+6) /*Interrupt Status (1 byte, r/o) */
-#define IM_STAT_REG(h) ((h)->io_port+7) /*Basic Status (1 byte, read only) */
-
-/* basic I/O-port of first adapter */
-#define IM_IO_PORT 0x3540
-/* maximum number of hosts that can be found */
-#define IM_N_IO_PORT 8
-
-/*requests going into the upper nibble of the Attention register */
-/*note: the lower nibble specifies the device(0-14), or subsystem(15) */
-#define IM_IMM_CMD 0x10 /*immediate command */
-#define IM_SCB 0x30 /*Subsystem Control Block command */
-#define IM_LONG_SCB 0x40 /*long Subsystem Control Block command */
-#define IM_EOI 0xe0 /*end-of-interrupt request */
-
-/*values for bits 7,1,0 of Basic Control reg. (bits 6-2 reserved) */
-#define IM_HW_RESET 0x80 /*hardware reset */
-#define IM_ENABLE_DMA 0x02 /*enable subsystem's busmaster DMA */
-#define IM_ENABLE_INTR 0x01 /*enable interrupts to the system */
-
-/*to interpret the upper nibble of Interrupt Status register */
-/*note: the lower nibble specifies the device(0-14), or subsystem(15) */
-#define IM_SCB_CMD_COMPLETED 0x10
-#define IM_SCB_CMD_COMPLETED_WITH_RETRIES 0x50
-#define IM_LOOP_SCATTER_BUFFER_FULL 0x60
-#define IM_ADAPTER_HW_FAILURE 0x70
-#define IM_IMMEDIATE_CMD_COMPLETED 0xa0
-#define IM_CMD_COMPLETED_WITH_FAILURE 0xc0
-#define IM_CMD_ERROR 0xe0
-#define IM_SOFTWARE_SEQUENCING_ERROR 0xf0
-
-/*to interpret bits 3-0 of Basic Status register (bits 7-4 reserved) */
-#define IM_CMD_REG_FULL 0x08
-#define IM_CMD_REG_EMPTY 0x04
-#define IM_INTR_REQUEST 0x02
-#define IM_BUSY 0x01
-
-/*immediate commands (word written into low 2 bytes of command reg) */
-#define IM_RESET_IMM_CMD 0x0400
-#define IM_FEATURE_CTR_IMM_CMD 0x040c
-#define IM_DMA_PACING_IMM_CMD 0x040d
-#define IM_ASSIGN_IMM_CMD 0x040e
-#define IM_ABORT_IMM_CMD 0x040f
-#define IM_FORMAT_PREP_IMM_CMD 0x0417
-
-/*SCB (Subsystem Control Block) structure */
-struct im_scb {
- unsigned short command; /*command word (read, etc.) */
- unsigned short enable; /*enable word, modifies cmd */
- union {
- unsigned long log_blk_adr; /*block address on SCSI device */
- unsigned char scsi_cmd_length; /*6,10,12, for other scsi cmd */
- } u1;
- unsigned long sys_buf_adr; /*physical system memory adr */
- unsigned long sys_buf_length; /*size of sys mem buffer */
- unsigned long tsb_adr; /*Termination Status Block adr */
- unsigned long scb_chain_adr; /*optional SCB chain address */
- union {
- struct {
- unsigned short count; /*block count, on SCSI device */
- unsigned short length; /*block length, on SCSI device */
- } blk;
- unsigned char scsi_command[12]; /*other scsi command */
- } u2;
-};
-
-/*structure scatter-gather element (for list of system memory areas) */
-struct im_sge {
- void *address;
- unsigned long byte_length;
-};
-
-/*structure returned by a get_pos_info command: */
-struct im_pos_info {
- unsigned short pos_id; /* adapter id */
- unsigned char pos_3a; /* pos 3 (if pos 6 = 0) */
- unsigned char pos_2; /* pos 2 */
- unsigned char int_level; /* interrupt level IRQ 11 or 14 */
- unsigned char pos_4a; /* pos 4 (if pos 6 = 0) */
- unsigned short connector_size; /* MCA connector size: 16 or 32 Bit */
- unsigned char num_luns; /* number of supported luns per device */
- unsigned char num_puns; /* number of supported puns */
- unsigned char pacing_factor; /* pacing factor */
- unsigned char num_ldns; /* number of ldns available */
- unsigned char eoi_off; /* time EOI and interrupt inactive */
- unsigned char max_busy; /* time between reset and busy on */
- unsigned short cache_stat; /* ldn cachestat. Bit=1 = not cached */
- unsigned short retry_stat; /* retry status of ldns. Bit=1=disabled */
- unsigned char pos_4b; /* pos 4 (if pos 6 = 1) */
- unsigned char pos_3b; /* pos 3 (if pos 6 = 1) */
- unsigned char pos_6; /* pos 6 */
- unsigned char pos_5; /* pos 5 */
- unsigned short max_overlap; /* maximum overlapping requests */
- unsigned short num_bus; /* number of SCSI-busses */
-};
-
-/*values for SCB command word */
-#define IM_NO_SYNCHRONOUS 0x0040 /*flag for any command */
-#define IM_NO_DISCONNECT 0x0080 /*flag for any command */
-#define IM_READ_DATA_CMD 0x1c01
-#define IM_WRITE_DATA_CMD 0x1c02
-#define IM_READ_VERIFY_CMD 0x1c03
-#define IM_WRITE_VERIFY_CMD 0x1c04
-#define IM_REQUEST_SENSE_CMD 0x1c08
-#define IM_READ_CAPACITY_CMD 0x1c09
-#define IM_DEVICE_INQUIRY_CMD 0x1c0b
-#define IM_READ_LOGICAL_CMD 0x1c2a
-#define IM_OTHER_SCSI_CMD_CMD 0x241f
-
-/* unused, but supported, SCB commands */
-#define IM_GET_COMMAND_COMPLETE_STATUS_CMD 0x1c07 /* command status */
-#define IM_GET_POS_INFO_CMD 0x1c0a /* returns neat stuff */
-#define IM_READ_PREFETCH_CMD 0x1c31 /* caching controller only */
-#define IM_FOMAT_UNIT_CMD 0x1c16 /* format unit */
-#define IM_REASSIGN_BLOCK_CMD 0x1c18 /* in case of error */
-
-/*values to set bits in the enable word of SCB */
-#define IM_READ_CONTROL 0x8000
-#define IM_REPORT_TSB_ONLY_ON_ERROR 0x4000
-#define IM_RETRY_ENABLE 0x2000
-#define IM_POINTER_TO_LIST 0x1000
-#define IM_SUPRESS_EXCEPTION_SHORT 0x0400
-#define IM_BYPASS_BUFFER 0x0200
-#define IM_CHAIN_ON_NO_ERROR 0x0001
-
-/*TSB (Termination Status Block) structure */
-struct im_tsb {
- unsigned short end_status;
- unsigned short reserved1;
- unsigned long residual_byte_count;
- unsigned long sg_list_element_adr;
- unsigned short status_length;
- unsigned char dev_status;
- unsigned char cmd_status;
- unsigned char dev_error;
- unsigned char cmd_error;
- unsigned short reserved2;
- unsigned short reserved3;
- unsigned short low_of_last_scb_adr;
- unsigned short high_of_last_scb_adr;
-};
-
-/*subsystem uses interrupt request level 14 */
-#define IM_IRQ 14
-/*SCSI-2 F/W may evade to interrupt 11 */
-#define IM_IRQ_FW 11
-
-/* Model 95 has an additional alphanumeric display, which can be used
- to display SCSI-activities. 8595 models do not have any disk led, which
- makes this feature quite useful.
- The regular PS/2 disk led is turned on/off by bits 6,7 of system
- control port. */
-
-/* LED display-port (actually, last LED on display) */
-#define MOD95_LED_PORT 0x108
-/* system-control-register of PS/2s with diskindicator */
-#define PS2_SYS_CTR 0x92
-/* activity displaying methods */
-#define LED_DISP 1
-#define LED_ADISP 2
-#define LED_ACTIVITY 4
-/* failed intr */
-#define CMD_FAIL 255
-
-/* The SCSI-ID(!) of the accessed SCSI-device is shown on PS/2-95 machines' LED
- displays. ldn is no longer displayed here, because the ldn mapping is now
- done dynamically and the ldn <-> pun,lun maps can be looked-up at boottime
- or during uptime in /proc/scsi/ibmmca/<host_no> in case of trouble,
- interest, debugging or just for having fun. The left number gives the
- host-adapter number and the right shows the accessed SCSI-ID. */
-
-/* display_mode is set by the ibmmcascsi= command line arg */
-static int display_mode = 0;
-/* set default adapter timeout */
-static unsigned int adapter_timeout = 45;
-/* for probing on feature-command: */
-static unsigned int global_command_error_excuse = 0;
-/* global setting by command line for adapter_speed */
-static int global_adapter_speed = 0; /* full speed by default */
-
-/* Panel / LED on, do it right for F/W addressin, too. adisplay will
- * just ignore ids>7, as the panel has only 7 digits available */
-#define PS2_DISK_LED_ON(ad,id) { if (display_mode & LED_DISP) { if (id>9) \
- outw((ad+48)|((id+55)<<8), MOD95_LED_PORT ); else \
- outw((ad+48)|((id+48)<<8), MOD95_LED_PORT ); } else \
- if (display_mode & LED_ADISP) { if (id<7) outb((char)(id+48),MOD95_LED_PORT+1+id); \
- outb((char)(ad+48), MOD95_LED_PORT); } \
- if ((display_mode & LED_ACTIVITY)||(!display_mode)) \
- outb(inb(PS2_SYS_CTR) | 0xc0, PS2_SYS_CTR); }
-
-/* Panel / LED off */
-/* bug fixed, Dec 15, 1997, where | was replaced by & here */
-#define PS2_DISK_LED_OFF() { if (display_mode & LED_DISP) \
- outw(0x2020, MOD95_LED_PORT ); else if (display_mode & LED_ADISP) { \
- outl(0x20202020,MOD95_LED_PORT); outl(0x20202020,MOD95_LED_PORT+4); } \
- if ((display_mode & LED_ACTIVITY)||(!display_mode)) \
- outb(inb(PS2_SYS_CTR) & 0x3f, PS2_SYS_CTR); }
-
-/* types of different supported hardware that goes to hostdata special */
-#define IBM_SCSI2_FW 0
-#define IBM_7568_WCACHE 1
-#define IBM_EXP_UNIT 2
-#define IBM_SCSI_WCACHE 3
-#define IBM_SCSI 4
-#define IBM_INTEGSCSI 5
-
-/* other special flags for hostdata structure */
-#define FORCED_DETECTION 100
-#define INTEGRATED_SCSI 101
-
-/* List of possible IBM-SCSI-adapters */
-static short ibmmca_id_table[] = {
- 0x8efc,
- 0x8efd,
- 0x8ef8,
- 0x8eff,
- 0x8efe,
- /* No entry for integrated SCSI, that's part of the register */
- 0
-};
-
-static const char *ibmmca_description[] = {
- "IBM SCSI-2 F/W Adapter", /* special = 0 */
- "IBM 7568 Industrial Computer SCSI Adapter w/Cache", /* special = 1 */
- "IBM Expansion Unit SCSI Controller", /* special = 2 */
- "IBM SCSI Adapter w/Cache", /* special = 3 */
- "IBM SCSI Adapter", /* special = 4 */
- "IBM Integrated SCSI Controller", /* special = 5 */
-};
-
-/* Max number of logical devices (can be up from 0 to 14). 15 is the address
-of the adapter itself. */
-#define MAX_LOG_DEV 15
-
-/*local data for a logical device */
-struct logical_device {
- struct im_scb scb; /* SCSI-subsystem-control-block structure */
- struct im_tsb tsb; /* SCSI command complete status block structure */
- struct im_sge sge[16]; /* scatter gather list structure */
- unsigned char buf[256]; /* SCSI command return data buffer */
- Scsi_Cmnd *cmd; /* SCSI-command that is currently in progress */
- int device_type; /* type of the SCSI-device. See include/scsi/scsi.h
- for interpretation of the possible values */
- int block_length; /* blocksize of a particular logical SCSI-device */
- int cache_flag; /* 1 if this is uncached, 0 if cache is present for ldn */
- int retry_flag; /* 1 if adapter retry is disabled, 0 if enabled */
-};
-
-/* statistics of the driver during operations (for proc_info) */
-struct Driver_Statistics {
- /* SCSI statistics on the adapter */
- int ldn_access[MAX_LOG_DEV + 1]; /* total accesses on a ldn */
- int ldn_read_access[MAX_LOG_DEV + 1]; /* total read-access on a ldn */
- int ldn_write_access[MAX_LOG_DEV + 1]; /* total write-access on a ldn */
- int ldn_inquiry_access[MAX_LOG_DEV + 1]; /* total inquiries on a ldn */
- int ldn_modeselect_access[MAX_LOG_DEV + 1]; /* total mode selects on ldn */
- int scbs; /* short SCBs queued */
- int long_scbs; /* long SCBs queued */
- int total_accesses; /* total accesses on all ldns */
- int total_interrupts; /* total interrupts (should be
- same as total_accesses) */
- int total_errors; /* command completed with error */
- /* dynamical assignment statistics */
- int total_scsi_devices; /* number of physical pun,lun */
- int dyn_flag; /* flag showing dynamical mode */
- int dynamical_assignments; /* number of remappings of ldns */
- int ldn_assignments[MAX_LOG_DEV + 1]; /* number of remappings of each
- ldn */
-};
-
-/* data structure for each host adapter */
-struct ibmmca_hostdata {
- /* array of logical devices: */
- struct logical_device _ld[MAX_LOG_DEV + 1];
- /* array to convert (pun, lun) into logical device number: */
- unsigned char _get_ldn[16][8];
- /*array that contains the information about the physical SCSI-devices
- attached to this host adapter: */
- unsigned char _get_scsi[16][8];
- /* used only when checking logical devices: */
- int _local_checking_phase_flag;
- /* report received interrupt: */
- int _got_interrupt;
- /* report termination-status of SCSI-command: */
- int _stat_result;
- /* reset status (used only when doing reset): */
- int _reset_status;
- /* code of the last SCSI command (needed for panic info): */
- int _last_scsi_command[MAX_LOG_DEV + 1];
- /* identifier of the last SCSI-command type */
- int _last_scsi_type[MAX_LOG_DEV + 1];
- /* last blockcount */
- int _last_scsi_blockcount[MAX_LOG_DEV + 1];
- /* last locgical block address */
- unsigned long _last_scsi_logical_block[MAX_LOG_DEV + 1];
- /* Counter that points on the next reassignable ldn for dynamical
- remapping. The default value is 7, that is the first reassignable
- number in the list at boottime: */
- int _next_ldn;
- /* Statistics-structure for this IBM-SCSI-host: */
- struct Driver_Statistics _IBM_DS;
- /* This hostadapters pos-registers pos2 until pos6 */
- unsigned int _pos[8];
- /* assign a special variable, that contains dedicated info about the
- adaptertype */
- int _special;
- /* connector size on the MCA bus */
- int _connector_size;
- /* synchronous SCSI transfer rate bitpattern */
- int _adapter_speed;
-};
-
-/* macros to access host data structure */
-#define subsystem_pun(h) ((h)->this_id)
-#define subsystem_maxid(h) ((h)->max_id)
-#define ld(h) (((struct ibmmca_hostdata *) (h)->hostdata)->_ld)
-#define get_ldn(h) (((struct ibmmca_hostdata *) (h)->hostdata)->_get_ldn)
-#define get_scsi(h) (((struct ibmmca_hostdata *) (h)->hostdata)->_get_scsi)
-#define local_checking_phase_flag(h) (((struct ibmmca_hostdata *) (h)->hostdata)->_local_checking_phase_flag)
-#define got_interrupt(h) (((struct ibmmca_hostdata *) (h)->hostdata)->_got_interrupt)
-#define stat_result(h) (((struct ibmmca_hostdata *) (h)->hostdata)->_stat_result)
-#define reset_status(h) (((struct ibmmca_hostdata *) (h)->hostdata)->_reset_status)
-#define last_scsi_command(h) (((struct ibmmca_hostdata *) (h)->hostdata)->_last_scsi_command)
-#define last_scsi_type(h) (((struct ibmmca_hostdata *) (h)->hostdata)->_last_scsi_type)
-#define last_scsi_blockcount(h) (((struct ibmmca_hostdata *) (h)->hostdata)->_last_scsi_blockcount)
-#define last_scsi_logical_block(h) (((struct ibmmca_hostdata *) (h)->hostdata)->_last_scsi_logical_block)
-#define last_scsi_type(h) (((struct ibmmca_hostdata *) (h)->hostdata)->_last_scsi_type)
-#define next_ldn(h) (((struct ibmmca_hostdata *) (h)->hostdata)->_next_ldn)
-#define IBM_DS(h) (((struct ibmmca_hostdata *) (h)->hostdata)->_IBM_DS)
-#define special(h) (((struct ibmmca_hostdata *) (h)->hostdata)->_special)
-#define subsystem_connector_size(h) (((struct ibmmca_hostdata *) (h)->hostdata)->_connector_size)
-#define adapter_speed(h) (((struct ibmmca_hostdata *) (h)->hostdata)->_adapter_speed)
-#define pos2(h) (((struct ibmmca_hostdata *) (h)->hostdata)->_pos[2])
-#define pos3(h) (((struct ibmmca_hostdata *) (h)->hostdata)->_pos[3])
-#define pos4(h) (((struct ibmmca_hostdata *) (h)->hostdata)->_pos[4])
-#define pos5(h) (((struct ibmmca_hostdata *) (h)->hostdata)->_pos[5])
-#define pos6(h) (((struct ibmmca_hostdata *) (h)->hostdata)->_pos[6])
-
-/* Define a arbitrary number as subsystem-marker-type. This number is, as
- described in the ANSI-SCSI-standard, not occupied by other device-types. */
-#define TYPE_IBM_SCSI_ADAPTER 0x2F
-
-/* Define 0xFF for no device type, because this type is not defined within
- the ANSI-SCSI-standard, therefore, it can be used and should not cause any
- harm. */
-#define TYPE_NO_DEVICE 0xFF
-
-/* define medium-changer. If this is not defined previously, e.g. Linux
- 2.0.x, define this type here. */
-#ifndef TYPE_MEDIUM_CHANGER
-#define TYPE_MEDIUM_CHANGER 0x08
-#endif
-
-/* define possible operations for the immediate_assign command */
-#define SET_LDN 0
-#define REMOVE_LDN 1
-
-/* ldn which is used to probe the SCSI devices */
-#define PROBE_LDN 0
-
-/* reset status flag contents */
-#define IM_RESET_NOT_IN_PROGRESS 0
-#define IM_RESET_IN_PROGRESS 1
-#define IM_RESET_FINISHED_OK 2
-#define IM_RESET_FINISHED_FAIL 3
-#define IM_RESET_NOT_IN_PROGRESS_NO_INT 4
-#define IM_RESET_FINISHED_OK_NO_INT 5
-
-/* define undefined SCSI-command */
-#define NO_SCSI 0xffff
-
-/*-----------------------------------------------------------------------*/
-
-/* if this is nonzero, ibmmcascsi option has been passed to the kernel */
-static int io_port[IM_MAX_HOSTS] = { 0, 0, 0, 0, 0, 0, 0, 0 };
-static int scsi_id[IM_MAX_HOSTS] = { 7, 7, 7, 7, 7, 7, 7, 7 };
-
-/* fill module-parameters only, when this define is present.
- (that is kernel version 2.1.x) */
-#if defined(MODULE)
-static char *boot_options = NULL;
-module_param(boot_options, charp, 0);
-module_param_array(io_port, int, NULL, 0);
-module_param_array(scsi_id, int, NULL, 0);
-
-MODULE_LICENSE("GPL");
-#endif
-/*counter of concurrent disk read/writes, to turn on/off disk led */
-static int disk_rw_in_progress = 0;
-
-static unsigned int pos[8]; /* whole pos register-line for diagnosis */
-/* Taking into account the additions, made by ZP Gu.
- * This selects now the preset value from the configfile and
- * offers the 'normal' commandline option to be accepted */
-#ifdef CONFIG_IBMMCA_SCSI_ORDER_STANDARD
-static char ibm_ansi_order = 1;
-#else
-static char ibm_ansi_order = 0;
-#endif
-
-static void issue_cmd(struct Scsi_Host *, unsigned long, unsigned char);
-static void internal_done(Scsi_Cmnd * cmd);
-static void check_devices(struct Scsi_Host *, int);
-static int immediate_assign(struct Scsi_Host *, unsigned int, unsigned int, unsigned int, unsigned int);
-static int immediate_feature(struct Scsi_Host *, unsigned int, unsigned int);
-#ifdef CONFIG_IBMMCA_SCSI_DEV_RESET
-static int immediate_reset(struct Scsi_Host *, unsigned int);
-#endif
-static int device_inquiry(struct Scsi_Host *, int);
-static int read_capacity(struct Scsi_Host *, int);
-static int get_pos_info(struct Scsi_Host *);
-static char *ti_p(int);
-static char *ti_l(int);
-static char *ibmrate(unsigned int, int);
-static int probe_display(int);
-static int probe_bus_mode(struct Scsi_Host *);
-static int device_exists(struct Scsi_Host *, int, int *, int *);
-static int option_setup(char *);
-/* local functions needed for proc_info */
-static int ldn_access_load(struct Scsi_Host *, int);
-static int ldn_access_total_read_write(struct Scsi_Host *);
-
-static irqreturn_t interrupt_handler(int irq, void *dev_id)
-{
- unsigned int intr_reg;
- unsigned int cmd_result;
- unsigned int ldn;
- unsigned long flags;
- Scsi_Cmnd *cmd;
- int lastSCSI;
- struct device *dev = dev_id;
- struct Scsi_Host *shpnt = dev_get_drvdata(dev);
-
- spin_lock_irqsave(shpnt->host_lock, flags);
-
- if(!(inb(IM_STAT_REG(shpnt)) & IM_INTR_REQUEST)) {
- spin_unlock_irqrestore(shpnt->host_lock, flags);
- return IRQ_NONE;
- }
-
- /* the reset-function already did all the job, even ints got
- renabled on the subsystem, so just return */
- if ((reset_status(shpnt) == IM_RESET_NOT_IN_PROGRESS_NO_INT) || (reset_status(shpnt) == IM_RESET_FINISHED_OK_NO_INT)) {
- reset_status(shpnt) = IM_RESET_NOT_IN_PROGRESS;
- spin_unlock_irqrestore(shpnt->host_lock, flags);
- return IRQ_HANDLED;
- }
-
- /*must wait for attention reg not busy, then send EOI to subsystem */
- while (1) {
- if (!(inb(IM_STAT_REG(shpnt)) & IM_BUSY))
- break;
- cpu_relax();
- }
-
- /*get command result and logical device */
- intr_reg = (unsigned char) (inb(IM_INTR_REG(shpnt)));
- cmd_result = intr_reg & 0xf0;
- ldn = intr_reg & 0x0f;
- /* get the last_scsi_command here */
- lastSCSI = last_scsi_command(shpnt)[ldn];
- outb(IM_EOI | ldn, IM_ATTN_REG(shpnt));
-
- /*these should never happen (hw fails, or a local programming bug) */
- if (!global_command_error_excuse) {
- switch (cmd_result) {
- /* Prevent from Ooopsing on error to show the real reason */
- case IM_ADAPTER_HW_FAILURE:
- case IM_SOFTWARE_SEQUENCING_ERROR:
- case IM_CMD_ERROR:
- printk(KERN_ERR "IBM MCA SCSI: Fatal Subsystem ERROR!\n");
- printk(KERN_ERR " Last cmd=0x%x, ena=%x, len=", lastSCSI, ld(shpnt)[ldn].scb.enable);
- if (ld(shpnt)[ldn].cmd)
- printk("%ld/%ld,", (long) (scsi_bufflen(ld(shpnt)[ldn].cmd)), (long) (ld(shpnt)[ldn].scb.sys_buf_length));
- else
- printk("none,");
- if (ld(shpnt)[ldn].cmd)
- printk("Blocksize=%d", ld(shpnt)[ldn].scb.u2.blk.length);
- else
- printk("Blocksize=none");
- printk(", host=%p, ldn=0x%x\n", shpnt, ldn);
- if (ld(shpnt)[ldn].cmd) {
- printk(KERN_ERR "Blockcount=%d/%d\n", last_scsi_blockcount(shpnt)[ldn], ld(shpnt)[ldn].scb.u2.blk.count);
- printk(KERN_ERR "Logical block=%lx/%lx\n", last_scsi_logical_block(shpnt)[ldn], ld(shpnt)[ldn].scb.u1.log_blk_adr);
- }
- printk(KERN_ERR "Reason given: %s\n", (cmd_result == IM_ADAPTER_HW_FAILURE) ? "HARDWARE FAILURE" : (cmd_result == IM_SOFTWARE_SEQUENCING_ERROR) ? "SOFTWARE SEQUENCING ERROR" : (cmd_result == IM_CMD_ERROR) ? "COMMAND ERROR" : "UNKNOWN");
- /* if errors appear, enter this section to give detailed info */
- printk(KERN_ERR "IBM MCA SCSI: Subsystem Error-Status follows:\n");
- printk(KERN_ERR " Command Type................: %x\n", last_scsi_type(shpnt)[ldn]);
- printk(KERN_ERR " Attention Register..........: %x\n", inb(IM_ATTN_REG(shpnt)));
- printk(KERN_ERR " Basic Control Register......: %x\n", inb(IM_CTR_REG(shpnt)));
- printk(KERN_ERR " Interrupt Status Register...: %x\n", intr_reg);
- printk(KERN_ERR " Basic Status Register.......: %x\n", inb(IM_STAT_REG(shpnt)));
- if ((last_scsi_type(shpnt)[ldn] == IM_SCB) || (last_scsi_type(shpnt)[ldn] == IM_LONG_SCB)) {
- printk(KERN_ERR " SCB-Command.................: %x\n", ld(shpnt)[ldn].scb.command);
- printk(KERN_ERR " SCB-Enable..................: %x\n", ld(shpnt)[ldn].scb.enable);
- printk(KERN_ERR " SCB-logical block address...: %lx\n", ld(shpnt)[ldn].scb.u1.log_blk_adr);
- printk(KERN_ERR " SCB-system buffer address...: %lx\n", ld(shpnt)[ldn].scb.sys_buf_adr);
- printk(KERN_ERR " SCB-system buffer length....: %lx\n", ld(shpnt)[ldn].scb.sys_buf_length);
- printk(KERN_ERR " SCB-tsb address.............: %lx\n", ld(shpnt)[ldn].scb.tsb_adr);
- printk(KERN_ERR " SCB-Chain address...........: %lx\n", ld(shpnt)[ldn].scb.scb_chain_adr);
- printk(KERN_ERR " SCB-block count.............: %x\n", ld(shpnt)[ldn].scb.u2.blk.count);
- printk(KERN_ERR " SCB-block length............: %x\n", ld(shpnt)[ldn].scb.u2.blk.length);
- }
- printk(KERN_ERR " Send this report to the maintainer.\n");
- panic("IBM MCA SCSI: Fatal error message from the subsystem (0x%X,0x%X)!\n", lastSCSI, cmd_result);
- break;
- }
- } else {
- /* The command error handling is made silent, but we tell the
- * calling function, that there is a reported error from the
- * adapter. */
- switch (cmd_result) {
- case IM_ADAPTER_HW_FAILURE:
- case IM_SOFTWARE_SEQUENCING_ERROR:
- case IM_CMD_ERROR:
- global_command_error_excuse = CMD_FAIL;
- break;
- default:
- global_command_error_excuse = 0;
- break;
- }
- }
- /* if no panic appeared, increase the interrupt-counter */
- IBM_DS(shpnt).total_interrupts++;
- /*only for local checking phase */
- if (local_checking_phase_flag(shpnt)) {
- stat_result(shpnt) = cmd_result;
- got_interrupt(shpnt) = 1;
- reset_status(shpnt) = IM_RESET_FINISHED_OK;
- last_scsi_command(shpnt)[ldn] = NO_SCSI;
- spin_unlock_irqrestore(shpnt->host_lock, flags);
- return IRQ_HANDLED;
- }
- /* handling of commands coming from upper level of scsi driver */
- if (last_scsi_type(shpnt)[ldn] == IM_IMM_CMD) {
- /* verify ldn, and may handle rare reset immediate command */
- if ((reset_status(shpnt) == IM_RESET_IN_PROGRESS) && (last_scsi_command(shpnt)[ldn] == IM_RESET_IMM_CMD)) {
- if (cmd_result == IM_CMD_COMPLETED_WITH_FAILURE) {
- disk_rw_in_progress = 0;
- PS2_DISK_LED_OFF();
- reset_status(shpnt) = IM_RESET_FINISHED_FAIL;
- } else {
- /*reset disk led counter, turn off disk led */
- disk_rw_in_progress = 0;
- PS2_DISK_LED_OFF();
- reset_status(shpnt) = IM_RESET_FINISHED_OK;
- }
- stat_result(shpnt) = cmd_result;
- last_scsi_command(shpnt)[ldn] = NO_SCSI;
- last_scsi_type(shpnt)[ldn] = 0;
- spin_unlock_irqrestore(shpnt->host_lock, flags);
- return IRQ_HANDLED;
- } else if (last_scsi_command(shpnt)[ldn] == IM_ABORT_IMM_CMD) {
- /* react on SCSI abort command */
-#ifdef IM_DEBUG_PROBE
- printk("IBM MCA SCSI: Interrupt from SCSI-abort.\n");
-#endif
- disk_rw_in_progress = 0;
- PS2_DISK_LED_OFF();
- cmd = ld(shpnt)[ldn].cmd;
- ld(shpnt)[ldn].cmd = NULL;
- if (cmd_result == IM_CMD_COMPLETED_WITH_FAILURE)
- cmd->result = DID_NO_CONNECT << 16;
- else
- cmd->result = DID_ABORT << 16;
- stat_result(shpnt) = cmd_result;
- last_scsi_command(shpnt)[ldn] = NO_SCSI;
- last_scsi_type(shpnt)[ldn] = 0;
- if (cmd->scsi_done)
- (cmd->scsi_done) (cmd); /* should be the internal_done */
- spin_unlock_irqrestore(shpnt->host_lock, flags);
- return IRQ_HANDLED;
- } else {
- disk_rw_in_progress = 0;
- PS2_DISK_LED_OFF();
- reset_status(shpnt) = IM_RESET_FINISHED_OK;
- stat_result(shpnt) = cmd_result;
- last_scsi_command(shpnt)[ldn] = NO_SCSI;
- spin_unlock_irqrestore(shpnt->host_lock, flags);
- return IRQ_HANDLED;
- }
- }
- last_scsi_command(shpnt)[ldn] = NO_SCSI;
- last_scsi_type(shpnt)[ldn] = 0;
- cmd = ld(shpnt)[ldn].cmd;
- ld(shpnt)[ldn].cmd = NULL;
-#ifdef IM_DEBUG_TIMEOUT
- if (cmd) {
- if ((cmd->target == TIMEOUT_PUN) && (cmd->device->lun == TIMEOUT_LUN)) {
- spin_unlock_irqsave(shpnt->host_lock, flags);
- printk("IBM MCA SCSI: Ignoring interrupt from pun=%x, lun=%x.\n", cmd->target, cmd->device->lun);
- return IRQ_HANDLED;
- }
- }
-#endif
- /*if no command structure, just return, else clear cmd */
- if (!cmd)
- {
- spin_unlock_irqrestore(shpnt->host_lock, flags);
- return IRQ_HANDLED;
- }
-
-#ifdef IM_DEBUG_INT
- printk("cmd=%02x ireg=%02x ds=%02x cs=%02x de=%02x ce=%02x\n", cmd->cmnd[0], intr_reg, ld(shpnt)[ldn].tsb.dev_status, ld(shpnt)[ldn].tsb.cmd_status, ld(shpnt)[ldn].tsb.dev_error, ld(shpnt)[ldn].tsb.cmd_error);
-#endif
- /*if this is end of media read/write, may turn off PS/2 disk led */
- if ((ld(shpnt)[ldn].device_type != TYPE_NO_LUN) && (ld(shpnt)[ldn].device_type != TYPE_NO_DEVICE)) {
- /* only access this, if there was a valid device addressed */
- if (--disk_rw_in_progress == 0)
- PS2_DISK_LED_OFF();
- }
-
- /* IBM describes the status-mask to be 0x1e, but this is not conform
- * with SCSI-definition, I suppose, the reason for it is that IBM
- * adapters do not support CMD_TERMINATED, TASK_SET_FULL and
- * ACA_ACTIVE as returning statusbyte information. (ML) */
- if (cmd_result == IM_CMD_COMPLETED_WITH_FAILURE) {
- cmd->result = (unsigned char) (ld(shpnt)[ldn].tsb.dev_status & 0x1e);
- IBM_DS(shpnt).total_errors++;
- } else
- cmd->result = 0;
- /* write device status into cmd->result, and call done function */
- if (lastSCSI == NO_SCSI) { /* unexpected interrupt :-( */
- cmd->result |= DID_BAD_INTR << 16;
- printk("IBM MCA SCSI: WARNING - Interrupt from non-pending SCSI-command!\n");
- } else /* things went right :-) */
- cmd->result |= DID_OK << 16;
- if (cmd->scsi_done)
- (cmd->scsi_done) (cmd);
- spin_unlock_irqrestore(shpnt->host_lock, flags);
- return IRQ_HANDLED;
-}
-
-static void issue_cmd(struct Scsi_Host *shpnt, unsigned long cmd_reg,
- unsigned char attn_reg)
-{
- unsigned long flags;
- /* must wait for attention reg not busy */
- while (1) {
- spin_lock_irqsave(shpnt->host_lock, flags);
- if (!(inb(IM_STAT_REG(shpnt)) & IM_BUSY))
- break;
- spin_unlock_irqrestore(shpnt->host_lock, flags);
- }
- /* write registers and enable system interrupts */
- outl(cmd_reg, IM_CMD_REG(shpnt));
- outb(attn_reg, IM_ATTN_REG(shpnt));
- spin_unlock_irqrestore(shpnt->host_lock, flags);
-}
-
-static void internal_done(Scsi_Cmnd * cmd)
-{
- cmd->SCp.Status++;
- return;
-}
-
-/* SCSI-SCB-command for device_inquiry */
-static int device_inquiry(struct Scsi_Host *shpnt, int ldn)
-{
- int retr;
- struct im_scb *scb;
- struct im_tsb *tsb;
- unsigned char *buf;
-
- scb = &(ld(shpnt)[ldn].scb);
- tsb = &(ld(shpnt)[ldn].tsb);
- buf = (unsigned char *) (&(ld(shpnt)[ldn].buf));
- ld(shpnt)[ldn].tsb.dev_status = 0; /* prepare statusblock */
- for (retr = 0; retr < 3; retr++) {
- /* fill scb with inquiry command */
- scb->command = IM_DEVICE_INQUIRY_CMD | IM_NO_DISCONNECT;
- scb->enable = IM_REPORT_TSB_ONLY_ON_ERROR | IM_READ_CONTROL | IM_SUPRESS_EXCEPTION_SHORT | IM_RETRY_ENABLE | IM_BYPASS_BUFFER;
- last_scsi_command(shpnt)[ldn] = IM_DEVICE_INQUIRY_CMD;
- last_scsi_type(shpnt)[ldn] = IM_SCB;
- scb->sys_buf_adr = isa_virt_to_bus(buf);
- scb->sys_buf_length = 255; /* maximum bufferlength gives max info */
- scb->tsb_adr = isa_virt_to_bus(tsb);
- /* issue scb to passed ldn, and busy wait for interrupt */
- got_interrupt(shpnt) = 0;
- issue_cmd(shpnt, isa_virt_to_bus(scb), IM_SCB | ldn);
- while (!got_interrupt(shpnt))
- barrier();
-
- /*if command successful, break */
- if ((stat_result(shpnt) == IM_SCB_CMD_COMPLETED) || (stat_result(shpnt) == IM_SCB_CMD_COMPLETED_WITH_RETRIES))
- return 1;
- }
- /*if all three retries failed, return "no device at this ldn" */
- if (retr >= 3)
- return 0;
- else
- return 1;
-}
-
-static int read_capacity(struct Scsi_Host *shpnt, int ldn)
-{
- int retr;
- struct im_scb *scb;
- struct im_tsb *tsb;
- unsigned char *buf;
-
- scb = &(ld(shpnt)[ldn].scb);
- tsb = &(ld(shpnt)[ldn].tsb);
- buf = (unsigned char *) (&(ld(shpnt)[ldn].buf));
- ld(shpnt)[ldn].tsb.dev_status = 0;
- for (retr = 0; retr < 3; retr++) {
- /*fill scb with read capacity command */
- scb->command = IM_READ_CAPACITY_CMD;
- scb->enable = IM_REPORT_TSB_ONLY_ON_ERROR | IM_READ_CONTROL | IM_RETRY_ENABLE | IM_BYPASS_BUFFER;
- last_scsi_command(shpnt)[ldn] = IM_READ_CAPACITY_CMD;
- last_scsi_type(shpnt)[ldn] = IM_SCB;
- scb->sys_buf_adr = isa_virt_to_bus(buf);
- scb->sys_buf_length = 8;
- scb->tsb_adr = isa_virt_to_bus(tsb);
- /*issue scb to passed ldn, and busy wait for interrupt */
- got_interrupt(shpnt) = 0;
- issue_cmd(shpnt, isa_virt_to_bus(scb), IM_SCB | ldn);
- while (!got_interrupt(shpnt))
- barrier();
-
- /*if got capacity, get block length and return one device found */
- if ((stat_result(shpnt) == IM_SCB_CMD_COMPLETED) || (stat_result(shpnt) == IM_SCB_CMD_COMPLETED_WITH_RETRIES))
- return 1;
- }
- /*if all three retries failed, return "no device at this ldn" */
- if (retr >= 3)
- return 0;
- else
- return 1;
-}
-
-static int get_pos_info(struct Scsi_Host *shpnt)
-{
- int retr;
- struct im_scb *scb;
- struct im_tsb *tsb;
- unsigned char *buf;
-
- scb = &(ld(shpnt)[MAX_LOG_DEV].scb);
- tsb = &(ld(shpnt)[MAX_LOG_DEV].tsb);
- buf = (unsigned char *) (&(ld(shpnt)[MAX_LOG_DEV].buf));
- ld(shpnt)[MAX_LOG_DEV].tsb.dev_status = 0;
- for (retr = 0; retr < 3; retr++) {
- /*fill scb with get_pos_info command */
- scb->command = IM_GET_POS_INFO_CMD;
- scb->enable = IM_READ_CONTROL | IM_REPORT_TSB_ONLY_ON_ERROR | IM_RETRY_ENABLE | IM_BYPASS_BUFFER;
- last_scsi_command(shpnt)[MAX_LOG_DEV] = IM_GET_POS_INFO_CMD;
- last_scsi_type(shpnt)[MAX_LOG_DEV] = IM_SCB;
- scb->sys_buf_adr = isa_virt_to_bus(buf);
- if (special(shpnt) == IBM_SCSI2_FW)
- scb->sys_buf_length = 256; /* get all info from F/W adapter */
- else
- scb->sys_buf_length = 18; /* get exactly 18 bytes for other SCSI */
- scb->tsb_adr = isa_virt_to_bus(tsb);
- /*issue scb to ldn=15, and busy wait for interrupt */
- got_interrupt(shpnt) = 0;
- issue_cmd(shpnt, isa_virt_to_bus(scb), IM_SCB | MAX_LOG_DEV);
-
- /* FIXME: timeout */
- while (!got_interrupt(shpnt))
- barrier();
-
- /*if got POS-stuff, get block length and return one device found */
- if ((stat_result(shpnt) == IM_SCB_CMD_COMPLETED) || (stat_result(shpnt) == IM_SCB_CMD_COMPLETED_WITH_RETRIES))
- return 1;
- }
- /* if all three retries failed, return "no device at this ldn" */
- if (retr >= 3)
- return 0;
- else
- return 1;
-}
-
-/* SCSI-immediate-command for assign. This functions maps/unmaps specific
- ldn-numbers on SCSI (PUN,LUN). It is needed for presetting of the
- subsystem and for dynamical remapping od ldns. */
-static int immediate_assign(struct Scsi_Host *shpnt, unsigned int pun,
- unsigned int lun, unsigned int ldn,
- unsigned int operation)
-{
- int retr;
- unsigned long imm_cmd;
-
- for (retr = 0; retr < 3; retr++) {
- /* select mutation level of the SCSI-adapter */
- switch (special(shpnt)) {
- case IBM_SCSI2_FW:
- imm_cmd = (unsigned long) (IM_ASSIGN_IMM_CMD);
- imm_cmd |= (unsigned long) ((lun & 7) << 24);
- imm_cmd |= (unsigned long) ((operation & 1) << 23);
- imm_cmd |= (unsigned long) ((pun & 7) << 20) | ((pun & 8) << 24);
- imm_cmd |= (unsigned long) ((ldn & 15) << 16);
- break;
- default:
- imm_cmd = inl(IM_CMD_REG(shpnt));
- imm_cmd &= (unsigned long) (0xF8000000); /* keep reserved bits */
- imm_cmd |= (unsigned long) (IM_ASSIGN_IMM_CMD);
- imm_cmd |= (unsigned long) ((lun & 7) << 24);
- imm_cmd |= (unsigned long) ((operation & 1) << 23);
- imm_cmd |= (unsigned long) ((pun & 7) << 20);
- imm_cmd |= (unsigned long) ((ldn & 15) << 16);
- break;
- }
- last_scsi_command(shpnt)[MAX_LOG_DEV] = IM_ASSIGN_IMM_CMD;
- last_scsi_type(shpnt)[MAX_LOG_DEV] = IM_IMM_CMD;
- got_interrupt(shpnt) = 0;
- issue_cmd(shpnt, (unsigned long) (imm_cmd), IM_IMM_CMD | MAX_LOG_DEV);
- while (!got_interrupt(shpnt))
- barrier();
-
- /*if command successful, break */
- if (stat_result(shpnt) == IM_IMMEDIATE_CMD_COMPLETED)
- return 1;
- }
- if (retr >= 3)
- return 0;
- else
- return 1;
-}
-
-static int immediate_feature(struct Scsi_Host *shpnt, unsigned int speed, unsigned int timeout)
-{
- int retr;
- unsigned long imm_cmd;
-
- for (retr = 0; retr < 3; retr++) {
- /* select mutation level of the SCSI-adapter */
- imm_cmd = IM_FEATURE_CTR_IMM_CMD;
- imm_cmd |= (unsigned long) ((speed & 0x7) << 29);
- imm_cmd |= (unsigned long) ((timeout & 0x1fff) << 16);
- last_scsi_command(shpnt)[MAX_LOG_DEV] = IM_FEATURE_CTR_IMM_CMD;
- last_scsi_type(shpnt)[MAX_LOG_DEV] = IM_IMM_CMD;
- got_interrupt(shpnt) = 0;
- /* we need to run into command errors in order to probe for the
- * right speed! */
- global_command_error_excuse = 1;
- issue_cmd(shpnt, (unsigned long) (imm_cmd), IM_IMM_CMD | MAX_LOG_DEV);
-
- /* FIXME: timeout */
- while (!got_interrupt(shpnt))
- barrier();
- if (global_command_error_excuse == CMD_FAIL) {
- global_command_error_excuse = 0;
- return 2;
- } else
- global_command_error_excuse = 0;
- /*if command successful, break */
- if (stat_result(shpnt) == IM_IMMEDIATE_CMD_COMPLETED)
- return 1;
- }
- if (retr >= 3)
- return 0;
- else
- return 1;
-}
-
-#ifdef CONFIG_IBMMCA_SCSI_DEV_RESET
-static int immediate_reset(struct Scsi_Host *shpnt, unsigned int ldn)
-{
- int retries;
- int ticks;
- unsigned long imm_command;
-
- for (retries = 0; retries < 3; retries++) {
- imm_command = inl(IM_CMD_REG(shpnt));
- imm_command &= (unsigned long) (0xFFFF0000); /* keep reserved bits */
- imm_command |= (unsigned long) (IM_RESET_IMM_CMD);
- last_scsi_command(shpnt)[ldn] = IM_RESET_IMM_CMD;
- last_scsi_type(shpnt)[ldn] = IM_IMM_CMD;
- got_interrupt(shpnt) = 0;
- reset_status(shpnt) = IM_RESET_IN_PROGRESS;
- issue_cmd(shpnt, (unsigned long) (imm_command), IM_IMM_CMD | ldn);
- ticks = IM_RESET_DELAY * HZ;
- while (reset_status(shpnt) == IM_RESET_IN_PROGRESS && --ticks) {
- udelay((1 + 999 / HZ) * 1000);
- barrier();
- }
- /* if reset did not complete, just complain */
- if (!ticks) {
- printk(KERN_ERR "IBM MCA SCSI: reset did not complete within %d seconds.\n", IM_RESET_DELAY);
- reset_status(shpnt) = IM_RESET_FINISHED_OK;
- /* did not work, finish */
- return 1;
- }
- /*if command successful, break */
- if (stat_result(shpnt) == IM_IMMEDIATE_CMD_COMPLETED)
- return 1;
- }
- if (retries >= 3)
- return 0;
- else
- return 1;
-}
-#endif
-
-/* type-interpreter for physical device numbers */
-static char *ti_p(int dev)
-{
- switch (dev) {
- case TYPE_IBM_SCSI_ADAPTER:
- return ("A");
- case TYPE_DISK:
- return ("D");
- case TYPE_TAPE:
- return ("T");
- case TYPE_PROCESSOR:
- return ("P");
- case TYPE_WORM:
- return ("W");
- case TYPE_ROM:
- return ("R");
- case TYPE_SCANNER:
- return ("S");
- case TYPE_MOD:
- return ("M");
- case TYPE_MEDIUM_CHANGER:
- return ("C");
- case TYPE_NO_LUN:
- return ("+"); /* show NO_LUN */
- }
- return ("-"); /* TYPE_NO_DEVICE and others */
-}
-
-/* interpreter for logical device numbers (ldn) */
-static char *ti_l(int val)
-{
- const char hex[16] = "0123456789abcdef";
- static char answer[2];
-
- answer[1] = (char) (0x0);
- if (val <= MAX_LOG_DEV)
- answer[0] = hex[val];
- else
- answer[0] = '-';
- return (char *) &answer;
-}
-
-/* transfers bitpattern of the feature command to values in MHz */
-static char *ibmrate(unsigned int speed, int i)
-{
- switch (speed) {
- case 0:
- return i ? "5.00" : "10.00";
- case 1:
- return i ? "4.00" : "8.00";
- case 2:
- return i ? "3.33" : "6.66";
- case 3:
- return i ? "2.86" : "5.00";
- case 4:
- return i ? "2.50" : "4.00";
- case 5:
- return i ? "2.22" : "3.10";
- case 6:
- return i ? "2.00" : "2.50";
- case 7:
- return i ? "1.82" : "2.00";
- }
- return "---";
-}
-
-static int probe_display(int what)
-{
- static int rotator = 0;
- const char rotor[] = "|/-\\";
-
- if (!(display_mode & LED_DISP))
- return 0;
- if (!what) {
- outl(0x20202020, MOD95_LED_PORT);
- outl(0x20202020, MOD95_LED_PORT + 4);
- } else {
- outb('S', MOD95_LED_PORT + 7);
- outb('C', MOD95_LED_PORT + 6);
- outb('S', MOD95_LED_PORT + 5);
- outb('I', MOD95_LED_PORT + 4);
- outb('i', MOD95_LED_PORT + 3);
- outb('n', MOD95_LED_PORT + 2);
- outb('i', MOD95_LED_PORT + 1);
- outb((char) (rotor[rotator]), MOD95_LED_PORT);
- rotator++;
- if (rotator > 3)
- rotator = 0;
- }
- return 0;
-}
-
-static int probe_bus_mode(struct Scsi_Host *shpnt)
-{
- struct im_pos_info *info;
- int num_bus = 0;
- int ldn;
-
- info = (struct im_pos_info *) (&(ld(shpnt)[MAX_LOG_DEV].buf));
- if (get_pos_info(shpnt)) {
- if (info->connector_size & 0xf000)
- subsystem_connector_size(shpnt) = 16;
- else
- subsystem_connector_size(shpnt) = 32;
- num_bus |= (info->pos_4b & 8) >> 3;
- for (ldn = 0; ldn <= MAX_LOG_DEV; ldn++) {
- if ((special(shpnt) == IBM_SCSI_WCACHE) || (special(shpnt) == IBM_7568_WCACHE)) {
- if (!((info->cache_stat >> ldn) & 1))
- ld(shpnt)[ldn].cache_flag = 0;
- }
- if (!((info->retry_stat >> ldn) & 1))
- ld(shpnt)[ldn].retry_flag = 0;
- }
-#ifdef IM_DEBUG_PROBE
- printk("IBM MCA SCSI: SCSI-Cache bits: ");
- for (ldn = 0; ldn <= MAX_LOG_DEV; ldn++) {
- printk("%d", ld(shpnt)[ldn].cache_flag);
- }
- printk("\nIBM MCA SCSI: SCSI-Retry bits: ");
- for (ldn = 0; ldn <= MAX_LOG_DEV; ldn++) {
- printk("%d", ld(shpnt)[ldn].retry_flag);
- }
- printk("\n");
-#endif
- }
- return num_bus;
-}
-
-/* probing scsi devices */
-static void check_devices(struct Scsi_Host *shpnt, int adaptertype)
-{
- int id, lun, ldn, ticks;
- int count_devices; /* local counter for connected device */
- int max_pun;
- int num_bus;
- int speedrun; /* local adapter_speed check variable */
-
- /* assign default values to certain variables */
- ticks = 0;
- count_devices = 0;
- IBM_DS(shpnt).dyn_flag = 0; /* normally no need for dynamical ldn management */
- IBM_DS(shpnt).total_errors = 0; /* set errorcounter to 0 */
- next_ldn(shpnt) = 7; /* next ldn to be assigned is 7, because 0-6 is 'hardwired' */
-
- /* initialize the very important driver-informational arrays/structs */
- memset(ld(shpnt), 0, sizeof(ld(shpnt)));
- for (ldn = 0; ldn <= MAX_LOG_DEV; ldn++) {
- last_scsi_command(shpnt)[ldn] = NO_SCSI; /* emptify last SCSI-command storage */
- last_scsi_type(shpnt)[ldn] = 0;
- ld(shpnt)[ldn].cache_flag = 1;
- ld(shpnt)[ldn].retry_flag = 1;
- }
- memset(get_ldn(shpnt), TYPE_NO_DEVICE, sizeof(get_ldn(shpnt))); /* this is essential ! */
- memset(get_scsi(shpnt), TYPE_NO_DEVICE, sizeof(get_scsi(shpnt))); /* this is essential ! */
- for (lun = 0; lun < 8; lun++) {
- /* mark the adapter at its pun on all luns */
- get_scsi(shpnt)[subsystem_pun(shpnt)][lun] = TYPE_IBM_SCSI_ADAPTER;
- get_ldn(shpnt)[subsystem_pun(shpnt)][lun] = MAX_LOG_DEV; /* make sure, the subsystem
- ldn is active for all
- luns. */
- }
- probe_display(0); /* Supercool display usage during SCSI-probing. */
- /* This makes sense, when booting without any */
- /* monitor connected on model XX95. */
-
- /* STEP 1: */
- adapter_speed(shpnt) = global_adapter_speed;
- speedrun = adapter_speed(shpnt);
- while (immediate_feature(shpnt, speedrun, adapter_timeout) == 2) {
- probe_display(1);
- if (speedrun == 7)
- panic("IBM MCA SCSI: Cannot set Synchronous-Transfer-Rate!\n");
- speedrun++;
- if (speedrun > 7)
- speedrun = 7;
- }
- adapter_speed(shpnt) = speedrun;
- /* Get detailed information about the current adapter, necessary for
- * device operations: */
- num_bus = probe_bus_mode(shpnt);
-
- /* num_bus contains only valid data for the F/W adapter! */
- if (adaptertype == IBM_SCSI2_FW) { /* F/W SCSI adapter: */
- /* F/W adapter PUN-space extension evaluation: */
- if (num_bus) {
- printk(KERN_INFO "IBM MCA SCSI: Separate bus mode (wide-addressing enabled)\n");
- subsystem_maxid(shpnt) = 16;
- } else {
- printk(KERN_INFO "IBM MCA SCSI: Combined bus mode (wide-addressing disabled)\n");
- subsystem_maxid(shpnt) = 8;
- }
- printk(KERN_INFO "IBM MCA SCSI: Sync.-Rate (F/W: 20, Int.: 10, Ext.: %s) MBytes/s\n", ibmrate(speedrun, adaptertype));
- } else /* all other IBM SCSI adapters: */
- printk(KERN_INFO "IBM MCA SCSI: Synchronous-SCSI-Transfer-Rate: %s MBytes/s\n", ibmrate(speedrun, adaptertype));
-
- /* assign correct PUN device space */
- max_pun = subsystem_maxid(shpnt);
-
-#ifdef IM_DEBUG_PROBE
- printk("IBM MCA SCSI: Current SCSI-host index: %d\n", shpnt);
- printk("IBM MCA SCSI: Removing default logical SCSI-device mapping.");
-#else
- printk(KERN_INFO "IBM MCA SCSI: Dev. Order: %s, Mapping (takes <2min): ", (ibm_ansi_order) ? "ANSI" : "New");
-#endif
- for (ldn = 0; ldn < MAX_LOG_DEV; ldn++) {
- probe_display(1);
-#ifdef IM_DEBUG_PROBE
- printk(".");
-#endif
- immediate_assign(shpnt, 0, 0, ldn, REMOVE_LDN); /* remove ldn (wherever) */
- }
- lun = 0; /* default lun is 0 */
-#ifndef IM_DEBUG_PROBE
- printk("cleared,");
-#endif
- /* STEP 2: */
-#ifdef IM_DEBUG_PROBE
- printk("\nIBM MCA SCSI: Scanning SCSI-devices.");
-#endif
- for (id = 0; id < max_pun; id++)
-#ifdef CONFIG_SCSI_MULTI_LUN
- for (lun = 0; lun < 8; lun++)
-#endif
- {
- probe_display(1);
-#ifdef IM_DEBUG_PROBE
- printk(".");
-#endif
- if (id != subsystem_pun(shpnt)) {
- /* if pun is not the adapter: */
- /* set ldn=0 to pun,lun */
- immediate_assign(shpnt, id, lun, PROBE_LDN, SET_LDN);
- if (device_inquiry(shpnt, PROBE_LDN)) { /* probe device */
- get_scsi(shpnt)[id][lun] = (unsigned char) (ld(shpnt)[PROBE_LDN].buf[0]);
- /* entry, even for NO_LUN */
- if (ld(shpnt)[PROBE_LDN].buf[0] != TYPE_NO_LUN)
- count_devices++; /* a existing device is found */
- }
- /* remove ldn */
- immediate_assign(shpnt, id, lun, PROBE_LDN, REMOVE_LDN);
- }
- }
-#ifndef IM_DEBUG_PROBE
- printk("scanned,");
-#endif
- /* STEP 3: */
-#ifdef IM_DEBUG_PROBE
- printk("\nIBM MCA SCSI: Mapping SCSI-devices.");
-#endif
- ldn = 0;
- lun = 0;
-#ifdef CONFIG_SCSI_MULTI_LUN
- for (lun = 0; lun < 8 && ldn < MAX_LOG_DEV; lun++)
-#endif
- for (id = 0; id < max_pun && ldn < MAX_LOG_DEV; id++) {
- probe_display(1);
-#ifdef IM_DEBUG_PROBE
- printk(".");
-#endif
- if (id != subsystem_pun(shpnt)) {
- if (get_scsi(shpnt)[id][lun] != TYPE_NO_LUN && get_scsi(shpnt)[id][lun] != TYPE_NO_DEVICE) {
- /* Only map if accepted type. Always enter for
- lun == 0 to get no gaps into ldn-mapping for ldn<7. */
- immediate_assign(shpnt, id, lun, ldn, SET_LDN);
- get_ldn(shpnt)[id][lun] = ldn; /* map ldn */
- if (device_exists(shpnt, ldn, &ld(shpnt)[ldn].block_length, &ld(shpnt)[ldn].device_type)) {
-#ifdef CONFIG_IBMMCA_SCSI_DEV_RESET
- printk("resetting device at ldn=%x ... ", ldn);
- immediate_reset(shpnt, ldn);
-#endif
- ldn++;
- } else {
- /* device vanished, probably because we don't know how to
- * handle it or because it has problems */
- if (lun > 0) {
- /* remove mapping */
- get_ldn(shpnt)[id][lun] = TYPE_NO_DEVICE;
- immediate_assign(shpnt, 0, 0, ldn, REMOVE_LDN);
- } else
- ldn++;
- }
- } else if (lun == 0) {
- /* map lun == 0, even if no device exists */
- immediate_assign(shpnt, id, lun, ldn, SET_LDN);
- get_ldn(shpnt)[id][lun] = ldn; /* map ldn */
- ldn++;
- }
- }
- }
- /* STEP 4: */
-
- /* map remaining ldns to non-existing devices */
- for (lun = 1; lun < 8 && ldn < MAX_LOG_DEV; lun++)
- for (id = 0; id < max_pun && ldn < MAX_LOG_DEV; id++) {
- if (get_scsi(shpnt)[id][lun] == TYPE_NO_LUN || get_scsi(shpnt)[id][lun] == TYPE_NO_DEVICE) {
- probe_display(1);
- /* Map remaining ldns only to NON-existing pun,lun
- combinations to make sure an inquiry will fail.
- For MULTI_LUN, it is needed to avoid adapter autonome
- SCSI-remapping. */
- immediate_assign(shpnt, id, lun, ldn, SET_LDN);
- get_ldn(shpnt)[id][lun] = ldn;
- ldn++;
- }
- }
-#ifndef IM_DEBUG_PROBE
- printk("mapped.");
-#endif
- printk("\n");
-#ifdef IM_DEBUG_PROBE
- if (ibm_ansi_order)
- printk("IBM MCA SCSI: Device order: IBM/ANSI (pun=7 is first).\n");
- else
- printk("IBM MCA SCSI: Device order: New Industry Standard (pun=0 is first).\n");
-#endif
-
-#ifdef IM_DEBUG_PROBE
- /* Show the physical and logical mapping during boot. */
- printk("IBM MCA SCSI: Determined SCSI-device-mapping:\n");
- printk(" Physical SCSI-Device Map Logical SCSI-Device Map\n");
- printk("ID\\LUN 0 1 2 3 4 5 6 7 ID\\LUN 0 1 2 3 4 5 6 7\n");
- for (id = 0; id < max_pun; id++) {
- printk("%2d ", id);
- for (lun = 0; lun < 8; lun++)
- printk("%2s ", ti_p(get_scsi(shpnt)[id][lun]));
- printk(" %2d ", id);
- for (lun = 0; lun < 8; lun++)
- printk("%2s ", ti_l(get_ldn(shpnt)[id][lun]));
- printk("\n");
- }
-#endif
-
- /* assign total number of found SCSI-devices to the statistics struct */
- IBM_DS(shpnt).total_scsi_devices = count_devices;
-
- /* decide for output in /proc-filesystem, if the configuration of
- SCSI-devices makes dynamical reassignment of devices necessary */
- if (count_devices >= MAX_LOG_DEV)
- IBM_DS(shpnt).dyn_flag = 1; /* dynamical assignment is necessary */
- else
- IBM_DS(shpnt).dyn_flag = 0; /* dynamical assignment is not necessary */
-
- /* If no SCSI-devices are assigned, return 1 in order to cause message. */
- if (ldn == 0)
- printk("IBM MCA SCSI: Warning: No SCSI-devices found/assigned!\n");
-
- /* reset the counters for statistics on the current adapter */
- IBM_DS(shpnt).scbs = 0;
- IBM_DS(shpnt).long_scbs = 0;
- IBM_DS(shpnt).total_accesses = 0;
- IBM_DS(shpnt).total_interrupts = 0;
- IBM_DS(shpnt).dynamical_assignments = 0;
- memset(IBM_DS(shpnt).ldn_access, 0x0, sizeof(IBM_DS(shpnt).ldn_access));
- memset(IBM_DS(shpnt).ldn_read_access, 0x0, sizeof(IBM_DS(shpnt).ldn_read_access));
- memset(IBM_DS(shpnt).ldn_write_access, 0x0, sizeof(IBM_DS(shpnt).ldn_write_access));
- memset(IBM_DS(shpnt).ldn_inquiry_access, 0x0, sizeof(IBM_DS(shpnt).ldn_inquiry_access));
- memset(IBM_DS(shpnt).ldn_modeselect_access, 0x0, sizeof(IBM_DS(shpnt).ldn_modeselect_access));
- memset(IBM_DS(shpnt).ldn_assignments, 0x0, sizeof(IBM_DS(shpnt).ldn_assignments));
- probe_display(0);
- return;
-}
-
-static int device_exists(struct Scsi_Host *shpnt, int ldn, int *block_length, int *device_type)
-{
- unsigned char *buf;
- /* if no valid device found, return immediately with 0 */
- if (!(device_inquiry(shpnt, ldn)))
- return 0;
- buf = (unsigned char *) (&(ld(shpnt)[ldn].buf));
- if (*buf == TYPE_ROM) {
- *device_type = TYPE_ROM;
- *block_length = 2048; /* (standard blocksize for yellow-/red-book) */
- return 1;
- }
- if (*buf == TYPE_WORM) {
- *device_type = TYPE_WORM;
- *block_length = 2048;
- return 1;
- }
- if (*buf == TYPE_DISK) {
- *device_type = TYPE_DISK;
- if (read_capacity(shpnt, ldn)) {
- *block_length = *(buf + 7) + (*(buf + 6) << 8) + (*(buf + 5) << 16) + (*(buf + 4) << 24);
- return 1;
- } else
- return 0;
- }
- if (*buf == TYPE_MOD) {
- *device_type = TYPE_MOD;
- if (read_capacity(shpnt, ldn)) {
- *block_length = *(buf + 7) + (*(buf + 6) << 8) + (*(buf + 5) << 16) + (*(buf + 4) << 24);
- return 1;
- } else
- return 0;
- }
- if (*buf == TYPE_TAPE) {
- *device_type = TYPE_TAPE;
- *block_length = 0; /* not in use (setting by mt and mtst in op.) */
- return 1;
- }
- if (*buf == TYPE_PROCESSOR) {
- *device_type = TYPE_PROCESSOR;
- *block_length = 0; /* they set their stuff on drivers */
- return 1;
- }
- if (*buf == TYPE_SCANNER) {
- *device_type = TYPE_SCANNER;
- *block_length = 0; /* they set their stuff on drivers */
- return 1;
- }
- if (*buf == TYPE_MEDIUM_CHANGER) {
- *device_type = TYPE_MEDIUM_CHANGER;
- *block_length = 0; /* One never knows, what to expect on a medium
- changer device. */
- return 1;
- }
- return 0;
-}
-
-static void internal_ibmmca_scsi_setup(char *str, int *ints)
-{
- int i, j, io_base, id_base;
- char *token;
-
- io_base = 0;
- id_base = 0;
- if (str) {
- j = 0;
- while ((token = strsep(&str, ",")) != NULL) {
- if (!strcmp(token, "activity"))
- display_mode |= LED_ACTIVITY;
- if (!strcmp(token, "display"))
- display_mode |= LED_DISP;
- if (!strcmp(token, "adisplay"))
- display_mode |= LED_ADISP;
- if (!strcmp(token, "normal"))
- ibm_ansi_order = 0;
- if (!strcmp(token, "ansi"))
- ibm_ansi_order = 1;
- if (!strcmp(token, "fast"))
- global_adapter_speed = 0;
- if (!strcmp(token, "medium"))
- global_adapter_speed = 4;
- if (!strcmp(token, "slow"))
- global_adapter_speed = 7;
- if ((*token == '-') || (isdigit(*token))) {
- if (!(j % 2) && (io_base < IM_MAX_HOSTS))
- io_port[io_base++] = simple_strtoul(token, NULL, 0);
- if ((j % 2) && (id_base < IM_MAX_HOSTS))
- scsi_id[id_base++] = simple_strtoul(token, NULL, 0);
- j++;
- }
- }
- } else if (ints) {
- for (i = 0; i < IM_MAX_HOSTS && 2 * i + 2 < ints[0]; i++) {
- io_port[i] = ints[2 * i + 2];
- scsi_id[i] = ints[2 * i + 2];
- }
- }
- return;
-}
-
-#if 0
- FIXME NEED TO MOVE TO SYSFS
-
-static int ibmmca_getinfo(char *buf, int slot, void *dev_id)
-{
- struct Scsi_Host *shpnt;
- int len, speciale, connectore, k;
- unsigned int pos[8];
- unsigned long flags;
- struct Scsi_Host *dev = dev_id;
-
- spin_lock_irqsave(dev->host_lock, flags);
-
- shpnt = dev; /* assign host-structure to local pointer */
- len = 0; /* set filled text-buffer index to 0 */
- /* get the _special contents of the hostdata structure */
- speciale = ((struct ibmmca_hostdata *) shpnt->hostdata)->_special;
- connectore = ((struct ibmmca_hostdata *) shpnt->hostdata)->_connector_size;
- for (k = 2; k < 4; k++)
- pos[k] = ((struct ibmmca_hostdata *) shpnt->hostdata)->_pos[k];
- if (speciale == FORCED_DETECTION) { /* forced detection */
- len += sprintf(buf + len,
- "Adapter category: forced detected\n" "***************************************\n" "*** Forced detected SCSI Adapter ***\n" "*** No chip-information available ***\n" "***************************************\n");
- } else if (speciale == INTEGRATED_SCSI) {
- /* if the integrated subsystem has been found automatically: */
- len += sprintf(buf + len,
- "Adapter category: integrated\n" "Chip revision level: %d\n" "Chip status: %s\n" "8 kByte NVRAM status: %s\n", ((pos[2] & 0xf0) >> 4), (pos[2] & 1) ? "enabled" : "disabled", (pos[2] & 2) ? "locked" : "accessible");
- } else if ((speciale >= 0) && (speciale < ARRAY_SIZE(subsys_list))) {
- /* if the subsystem is a slot adapter */
- len += sprintf(buf + len, "Adapter category: slot-card\n" "ROM Segment Address: ");
- if ((pos[2] & 0xf0) == 0xf0)
- len += sprintf(buf + len, "off\n");
- else
- len += sprintf(buf + len, "0x%x\n", ((pos[2] & 0xf0) << 13) + 0xc0000);
- len += sprintf(buf + len, "Chip status: %s\n", (pos[2] & 1) ? "enabled" : "disabled");
- len += sprintf(buf + len, "Adapter I/O Offset: 0x%x\n", ((pos[2] & 0x0e) << 2));
- } else {
- len += sprintf(buf + len, "Adapter category: unknown\n");
- }
- /* common subsystem information to write to the slotn file */
- len += sprintf(buf + len, "Subsystem PUN: %d\n", shpnt->this_id);
- len += sprintf(buf + len, "I/O base address range: 0x%x-0x%x\n", (unsigned int) (shpnt->io_port), (unsigned int) (shpnt->io_port + 7));
- len += sprintf(buf + len, "MCA-slot size: %d bits", connectore);
- /* Now make sure, the bufferlength is devidable by 4 to avoid
- * paging problems of the buffer. */
- while (len % sizeof(int) != (sizeof(int) - 1))
- len += sprintf(buf + len, " ");
- len += sprintf(buf + len, "\n");
-
- spin_unlock_irqrestore(shpnt->host_lock, flags);
-
- return len;
-}
-#endif
-
-static struct scsi_host_template ibmmca_driver_template = {
- .proc_name = "ibmmca",
- .proc_info = ibmmca_proc_info,
- .name = "IBM SCSI-Subsystem",
- .queuecommand = ibmmca_queuecommand,
- .eh_abort_handler = ibmmca_abort,
- .eh_host_reset_handler = ibmmca_host_reset,
- .bios_param = ibmmca_biosparam,
- .can_queue = 16,
- .this_id = 7,
- .sg_tablesize = 16,
- .cmd_per_lun = 1,
- .use_clustering = ENABLE_CLUSTERING,
-};
-
-static int ibmmca_probe(struct device *dev)
-{
- struct Scsi_Host *shpnt;
- int port, id, i, j, k, irq, enabled, ret = -EINVAL;
- struct mca_device *mca_dev = to_mca_device(dev);
- const char *description = ibmmca_description[mca_dev->index];
-
- /* First of all, print the version number of the driver. This is
- * important to allow better user bugreports in case of already
- * having problems with the MCA_bus probing. */
- printk(KERN_INFO "IBM MCA SCSI: Version %s\n", IBMMCA_SCSI_DRIVER_VERSION);
- /* The POS2-register of all PS/2 model SCSI-subsystems has the following
- * interpretation of bits:
- * Bit 7 - 4 : Chip Revision ID (Release)
- * Bit 3 - 2 : Reserved
- * Bit 1 : 8k NVRAM Disabled
- * Bit 0 : Chip Enable (EN-Signal)
- * The POS3-register is interpreted as follows:
- * Bit 7 - 5 : SCSI ID
- * Bit 4 : Reserved = 0
- * Bit 3 - 0 : Reserved = 0
- * (taken from "IBM, PS/2 Hardware Interface Technical Reference, Common
- * Interfaces (1991)").
- * In short words, this means, that IBM PS/2 machines only support
- * 1 single subsystem by default. The slot-adapters must have another
- * configuration on pos2. Here, one has to assume the following
- * things for POS2-register:
- * Bit 7 - 4 : Chip Revision ID (Release)
- * Bit 3 - 1 : port offset factor
- * Bit 0 : Chip Enable (EN-Signal)
- * As I found a patch here, setting the IO-registers to 0x3540 forced,
- * as there was a 0x05 in POS2 on a model 56, I assume, that the
- * port 0x3540 must be fix for integrated SCSI-controllers.
- * Ok, this discovery leads to the following implementation: (M.Lang) */
-
- /* first look for the IBM SCSI integrated subsystem on the motherboard */
- for (j = 0; j < 8; j++) /* read the pos-information */
- pos[j] = mca_device_read_pos(mca_dev, j);
- id = (pos[3] & 0xe0) >> 5; /* this is correct and represents the PUN */
- enabled = (pos[2] &0x01);
- if (!enabled) {
- printk(KERN_WARNING "IBM MCA SCSI: WARNING - Your SCSI-subsystem is disabled!\n");
- printk(KERN_WARNING " SCSI-operations may not work.\n");
- }
-
- /* pos2 = pos3 = 0xff if there is no integrated SCSI-subsystem present, but
- * if we ignore the settings of all surrounding pos registers, it is not
- * completely sufficient to only check pos2 and pos3. */
- /* Therefore, now the following if statement is used to
- * make sure, we see a real integrated onboard SCSI-interface and no
- * internal system information, which gets mapped to some pos registers
- * on models 95xx. */
- if (mca_dev->slot == MCA_INTEGSCSI &&
- ((!pos[0] && !pos[1] && pos[2] > 0 &&
- pos[3] > 0 && !pos[4] && !pos[5] &&
- !pos[6] && !pos[7]) ||
- (pos[0] == 0xff && pos[1] == 0xff &&
- pos[2] < 0xff && pos[3] < 0xff &&
- pos[4] == 0xff && pos[5] == 0xff &&
- pos[6] == 0xff && pos[7] == 0xff))) {
- irq = IM_IRQ;
- port = IM_IO_PORT;
- } else {
- irq = IM_IRQ;
- port = IM_IO_PORT + ((pos[2] &0x0e) << 2);
- if ((mca_dev->index == IBM_SCSI2_FW) && (pos[6] != 0)) {
- printk(KERN_ERR "IBM MCA SCSI: ERROR - Wrong POS(6)-register setting!\n");
- printk(KERN_ERR " Impossible to determine adapter PUN!\n");
- printk(KERN_ERR " Guessing adapter PUN = 7.\n");
- id = 7;
- } else {
- id = (pos[3] & 0xe0) >> 5; /* get subsystem PUN */
- if (mca_dev->index == IBM_SCSI2_FW) {
- id |= (pos[3] & 0x10) >> 1; /* get subsystem PUN high-bit
- * for F/W adapters */
- }
- }
- if ((mca_dev->index == IBM_SCSI2_FW) &&
- (pos[4] & 0x01) && (pos[6] == 0)) {
- /* IRQ11 is used by SCSI-2 F/W Adapter/A */
- printk(KERN_DEBUG "IBM MCA SCSI: SCSI-2 F/W adapter needs IRQ 11.\n");
- irq = IM_IRQ_FW;
- }
- }
-
-
-
- /* give detailed information on the subsystem. This helps me
- * additionally during debugging and analyzing bug-reports. */
- printk(KERN_INFO "IBM MCA SCSI: %s found, io=0x%x, scsi id=%d,\n",
- description, port, id);
- if (mca_dev->slot == MCA_INTEGSCSI)
- printk(KERN_INFO " chip rev.=%d, 8K NVRAM=%s, subsystem=%s\n", ((pos[2] & 0xf0) >> 4), (pos[2] & 2) ? "locked" : "accessible", (pos[2] & 1) ? "enabled." : "disabled.");
- else {
- if ((pos[2] & 0xf0) == 0xf0)
- printk(KERN_DEBUG " ROM Addr.=off,");
- else
- printk(KERN_DEBUG " ROM Addr.=0x%x,", ((pos[2] & 0xf0) << 13) + 0xc0000);
-
- printk(KERN_DEBUG " port-offset=0x%x, subsystem=%s\n", ((pos[2] & 0x0e) << 2), (pos[2] & 1) ? "enabled." : "disabled.");
- }
-
- /* check I/O region */
- if (!request_region(port, IM_N_IO_PORT, description)) {
- printk(KERN_ERR "IBM MCA SCSI: Unable to get I/O region 0x%x-0x%x (%d ports).\n", port, port + IM_N_IO_PORT - 1, IM_N_IO_PORT);
- goto out_fail;
- }
-
- /* register host */
- shpnt = scsi_host_alloc(&ibmmca_driver_template,
- sizeof(struct ibmmca_hostdata));
- if (!shpnt) {
- printk(KERN_ERR "IBM MCA SCSI: Unable to register host.\n");
- goto out_release;
- }
-
- dev_set_drvdata(dev, shpnt);
- if(request_irq(irq, interrupt_handler, IRQF_SHARED, description, dev)) {
- printk(KERN_ERR "IBM MCA SCSI: failed to request interrupt %d\n", irq);
- goto out_free_host;
- }
-
- /* request I/O region */
- special(shpnt) = mca_dev->index; /* important assignment or else crash! */
- subsystem_connector_size(shpnt) = 0; /* preset slot-size */
- shpnt->irq = irq; /* assign necessary stuff for the adapter */
- shpnt->io_port = port;
- shpnt->n_io_port = IM_N_IO_PORT;
- shpnt->this_id = id;
- shpnt->max_id = 8; /* 8 PUNs are default */
- /* now, the SCSI-subsystem is connected to Linux */
-
-#ifdef IM_DEBUG_PROBE
- ctrl = (unsigned int) (inb(IM_CTR_REG(found))); /* get control-register status */
- printk("IBM MCA SCSI: Control Register contents: %x, status: %x\n", ctrl, inb(IM_STAT_REG(found)));
- printk("IBM MCA SCSI: This adapters' POS-registers: ");
- for (i = 0; i < 8; i++)
- printk("%x ", pos[i]);
- printk("\n");
-#endif
- reset_status(shpnt) = IM_RESET_NOT_IN_PROGRESS;
-
- for (i = 0; i < 16; i++) /* reset the tables */
- for (j = 0; j < 8; j++)
- get_ldn(shpnt)[i][j] = MAX_LOG_DEV;
-
- /* check which logical devices exist */
- /* after this line, local interrupting is possible: */
- local_checking_phase_flag(shpnt) = 1;
- check_devices(shpnt, mca_dev->index); /* call by value, using the global variable hosts */
- local_checking_phase_flag(shpnt) = 0;
-
- /* an ibm mca subsystem has been detected */
-
- for (k = 2; k < 7; k++)
- ((struct ibmmca_hostdata *) shpnt->hostdata)->_pos[k] = pos[k];
- ((struct ibmmca_hostdata *) shpnt->hostdata)->_special = INTEGRATED_SCSI;
- mca_device_set_name(mca_dev, description);
- /* FIXME: NEED TO REPLUMB TO SYSFS
- mca_set_adapter_procfn(MCA_INTEGSCSI, (MCA_ProcFn) ibmmca_getinfo, shpnt);
- */
- mca_device_set_claim(mca_dev, 1);
- if (scsi_add_host(shpnt, dev)) {
- dev_printk(KERN_ERR, dev, "IBM MCA SCSI: scsi_add_host failed\n");
- goto out_free_host;
- }
- scsi_scan_host(shpnt);
-
- return 0;
- out_free_host:
- scsi_host_put(shpnt);
- out_release:
- release_region(port, IM_N_IO_PORT);
- out_fail:
- return ret;
-}
-
-static int __devexit ibmmca_remove(struct device *dev)
-{
- struct Scsi_Host *shpnt = dev_get_drvdata(dev);
- scsi_remove_host(shpnt);
- release_region(shpnt->io_port, shpnt->n_io_port);
- free_irq(shpnt->irq, dev);
- scsi_host_put(shpnt);
- return 0;
-}
-
-/* The following routine is the SCSI command queue for the midlevel driver */
-static int ibmmca_queuecommand_lck(Scsi_Cmnd * cmd, void (*done) (Scsi_Cmnd *))
-{
- unsigned int ldn;
- unsigned int scsi_cmd;
- struct im_scb *scb;
- struct Scsi_Host *shpnt;
- int current_ldn;
- int id, lun;
- int target;
- int max_pun;
- int i;
- struct scatterlist *sg;
-
- shpnt = cmd->device->host;
-
- max_pun = subsystem_maxid(shpnt);
- if (ibm_ansi_order) {
- target = max_pun - 1 - cmd->device->id;
- if ((target <= subsystem_pun(shpnt)) && (cmd->device->id <= subsystem_pun(shpnt)))
- target--;
- else if ((target >= subsystem_pun(shpnt)) && (cmd->device->id >= subsystem_pun(shpnt)))
- target++;
- } else
- target = cmd->device->id;
-
- /* if (target,lun) is NO LUN or not existing at all, return error */
- if ((get_scsi(shpnt)[target][cmd->device->lun] == TYPE_NO_LUN) || (get_scsi(shpnt)[target][cmd->device->lun] == TYPE_NO_DEVICE)) {
- cmd->result = DID_NO_CONNECT << 16;
- if (done)
- done(cmd);
- return 0;
- }
-
- /*if (target,lun) unassigned, do further checks... */
- ldn = get_ldn(shpnt)[target][cmd->device->lun];
- if (ldn >= MAX_LOG_DEV) { /* on invalid ldn do special stuff */
- if (ldn > MAX_LOG_DEV) { /* dynamical remapping if ldn unassigned */
- current_ldn = next_ldn(shpnt); /* stop-value for one circle */
- while (ld(shpnt)[next_ldn(shpnt)].cmd) { /* search for a occupied, but not in */
- /* command-processing ldn. */
- next_ldn(shpnt)++;
- if (next_ldn(shpnt) >= MAX_LOG_DEV)
- next_ldn(shpnt) = 7;
- if (current_ldn == next_ldn(shpnt)) { /* One circle done ? */
- /* no non-processing ldn found */
- scmd_printk(KERN_WARNING, cmd,
- "IBM MCA SCSI: Cannot assign SCSI-device dynamically!\n"
- " On ldn 7-14 SCSI-commands everywhere in progress.\n"
- " Reporting DID_NO_CONNECT for device.\n");
- cmd->result = DID_NO_CONNECT << 16; /* return no connect */
- if (done)
- done(cmd);
- return 0;
- }
- }
-
- /* unmap non-processing ldn */
- for (id = 0; id < max_pun; id++)
- for (lun = 0; lun < 8; lun++) {
- if (get_ldn(shpnt)[id][lun] == next_ldn(shpnt)) {
- get_ldn(shpnt)[id][lun] = TYPE_NO_DEVICE;
- get_scsi(shpnt)[id][lun] = TYPE_NO_DEVICE;
- /* unmap entry */
- }
- }
- /* set reduced interrupt_handler-mode for checking */
- local_checking_phase_flag(shpnt) = 1;
- /* map found ldn to pun,lun */
- get_ldn(shpnt)[target][cmd->device->lun] = next_ldn(shpnt);
- /* change ldn to the right value, that is now next_ldn */
- ldn = next_ldn(shpnt);
- /* unassign all ldns (pun,lun,ldn does not matter for remove) */
- immediate_assign(shpnt, 0, 0, 0, REMOVE_LDN);
- /* set only LDN for remapped device */
- immediate_assign(shpnt, target, cmd->device->lun, ldn, SET_LDN);
- /* get device information for ld[ldn] */
- if (device_exists(shpnt, ldn, &ld(shpnt)[ldn].block_length, &ld(shpnt)[ldn].device_type)) {
- ld(shpnt)[ldn].cmd = NULL; /* To prevent panic set 0, because
- devices that were not assigned,
- should have nothing in progress. */
- get_scsi(shpnt)[target][cmd->device->lun] = ld(shpnt)[ldn].device_type;
- /* increase assignment counters for statistics in /proc */
- IBM_DS(shpnt).dynamical_assignments++;
- IBM_DS(shpnt).ldn_assignments[ldn]++;
- } else
- /* panic here, because a device, found at boottime has
- vanished */
- panic("IBM MCA SCSI: ldn=0x%x, SCSI-device on (%d,%d) vanished!\n", ldn, target, cmd->device->lun);
- /* unassign again all ldns (pun,lun,ldn does not matter for remove) */
- immediate_assign(shpnt, 0, 0, 0, REMOVE_LDN);
- /* remap all ldns, as written in the pun/lun table */
- lun = 0;
-#ifdef CONFIG_SCSI_MULTI_LUN
- for (lun = 0; lun < 8; lun++)
-#endif
- for (id = 0; id < max_pun; id++) {
- if (get_ldn(shpnt)[id][lun] <= MAX_LOG_DEV)
- immediate_assign(shpnt, id, lun, get_ldn(shpnt)[id][lun], SET_LDN);
- }
- /* set back to normal interrupt_handling */
- local_checking_phase_flag(shpnt) = 0;
-#ifdef IM_DEBUG_PROBE
- /* Information on syslog terminal */
- printk("IBM MCA SCSI: ldn=0x%x dynamically reassigned to (%d,%d).\n", ldn, target, cmd->device->lun);
-#endif
- /* increase next_ldn for next dynamical assignment */
- next_ldn(shpnt)++;
- if (next_ldn(shpnt) >= MAX_LOG_DEV)
- next_ldn(shpnt) = 7;
- } else { /* wall against Linux accesses to the subsystem adapter */
- cmd->result = DID_BAD_TARGET << 16;
- if (done)
- done(cmd);
- return 0;
- }
- }
-
- /*verify there is no command already in progress for this log dev */
- if (ld(shpnt)[ldn].cmd)
- panic("IBM MCA SCSI: cmd already in progress for this ldn.\n");
-
- /*save done in cmd, and save cmd for the interrupt handler */
- cmd->scsi_done = done;
- ld(shpnt)[ldn].cmd = cmd;
-
- /*fill scb information independent of the scsi command */
- scb = &(ld(shpnt)[ldn].scb);
- ld(shpnt)[ldn].tsb.dev_status = 0;
- scb->enable = IM_REPORT_TSB_ONLY_ON_ERROR | IM_RETRY_ENABLE;
- scb->tsb_adr = isa_virt_to_bus(&(ld(shpnt)[ldn].tsb));
- scsi_cmd = cmd->cmnd[0];
-
- if (scsi_sg_count(cmd)) {
- BUG_ON(scsi_sg_count(cmd) > 16);
-
- scsi_for_each_sg(cmd, sg, scsi_sg_count(cmd), i) {
- ld(shpnt)[ldn].sge[i].address = (void *) (isa_page_to_bus(sg_page(sg)) + sg->offset);
- ld(shpnt)[ldn].sge[i].byte_length = sg->length;
- }
- scb->enable |= IM_POINTER_TO_LIST;
- scb->sys_buf_adr = isa_virt_to_bus(&(ld(shpnt)[ldn].sge[0]));
- scb->sys_buf_length = scsi_sg_count(cmd) * sizeof(struct im_sge);
- } else {
- scb->sys_buf_adr = isa_virt_to_bus(scsi_sglist(cmd));
- /* recent Linux midlevel SCSI places 1024 byte for inquiry
- * command. Far too much for old PS/2 hardware. */
- switch (scsi_cmd) {
- /* avoid command errors by setting bufferlengths to
- * ANSI-standard. Beware of forcing it to 255,
- * this could SEGV the kernel!!! */
- case INQUIRY:
- case REQUEST_SENSE:
- case MODE_SENSE:
- case MODE_SELECT:
- if (scsi_bufflen(cmd) > 255)
- scb->sys_buf_length = 255;
- else
- scb->sys_buf_length = scsi_bufflen(cmd);
- break;
- case TEST_UNIT_READY:
- scb->sys_buf_length = 0;
- break;
- default:
- scb->sys_buf_length = scsi_bufflen(cmd);
- break;
- }
- }
- /*fill scb information dependent on scsi command */
-
-#ifdef IM_DEBUG_CMD
- printk("issue scsi cmd=%02x to ldn=%d\n", scsi_cmd, ldn);
-#endif
-
- /* for specific device-type debugging: */
-#ifdef IM_DEBUG_CMD_SPEC_DEV
- if (ld(shpnt)[ldn].device_type == IM_DEBUG_CMD_DEVICE)
- printk("(SCSI-device-type=0x%x) issue scsi cmd=%02x to ldn=%d\n", ld(shpnt)[ldn].device_type, scsi_cmd, ldn);
-#endif
-
- /* for possible panics store current command */
- last_scsi_command(shpnt)[ldn] = scsi_cmd;
- last_scsi_type(shpnt)[ldn] = IM_SCB;
- /* update statistical info */
- IBM_DS(shpnt).total_accesses++;
- IBM_DS(shpnt).ldn_access[ldn]++;
-
- switch (scsi_cmd) {
- case READ_6:
- case WRITE_6:
- case READ_10:
- case WRITE_10:
- case READ_12:
- case WRITE_12:
- /* Distinguish between disk and other devices. Only disks (that are the
- most frequently accessed devices) should be supported by the
- IBM-SCSI-Subsystem commands. */
- switch (ld(shpnt)[ldn].device_type) {
- case TYPE_DISK: /* for harddisks enter here ... */
- case TYPE_MOD: /* ... try it also for MO-drives (send flames as */
- /* you like, if this won't work.) */
- if (scsi_cmd == READ_6 || scsi_cmd == READ_10 || scsi_cmd == READ_12) {
- /* read command preparations */
- scb->enable |= IM_READ_CONTROL;
- IBM_DS(shpnt).ldn_read_access[ldn]++; /* increase READ-access on ldn stat. */
- scb->command = IM_READ_DATA_CMD | IM_NO_DISCONNECT;
- } else { /* write command preparations */
- IBM_DS(shpnt).ldn_write_access[ldn]++; /* increase write-count on ldn stat. */
- scb->command = IM_WRITE_DATA_CMD | IM_NO_DISCONNECT;
- }
- if (scsi_cmd == READ_6 || scsi_cmd == WRITE_6) {
- scb->u1.log_blk_adr = (((unsigned) cmd->cmnd[3]) << 0) | (((unsigned) cmd->cmnd[2]) << 8) | ((((unsigned) cmd->cmnd[1]) & 0x1f) << 16);
- scb->u2.blk.count = (unsigned) cmd->cmnd[4];
- } else {
- scb->u1.log_blk_adr = (((unsigned) cmd->cmnd[5]) << 0) | (((unsigned) cmd->cmnd[4]) << 8) | (((unsigned) cmd->cmnd[3]) << 16) | (((unsigned) cmd->cmnd[2]) << 24);
- scb->u2.blk.count = (((unsigned) cmd->cmnd[8]) << 0) | (((unsigned) cmd->cmnd[7]) << 8);
- }
- last_scsi_logical_block(shpnt)[ldn] = scb->u1.log_blk_adr;
- last_scsi_blockcount(shpnt)[ldn] = scb->u2.blk.count;
- scb->u2.blk.length = ld(shpnt)[ldn].block_length;
- break;
- /* for other devices, enter here. Other types are not known by
- Linux! TYPE_NO_LUN is forbidden as valid device. */
- case TYPE_ROM:
- case TYPE_TAPE:
- case TYPE_PROCESSOR:
- case TYPE_WORM:
- case TYPE_SCANNER:
- case TYPE_MEDIUM_CHANGER:
- /* If there is a sequential-device, IBM recommends to use
- IM_OTHER_SCSI_CMD_CMD instead of subsystem READ/WRITE.
- This includes CD-ROM devices, too, due to the partial sequential
- read capabilities. */
- scb->command = IM_OTHER_SCSI_CMD_CMD;
- if (scsi_cmd == READ_6 || scsi_cmd == READ_10 || scsi_cmd == READ_12)
- /* enable READ */
- scb->enable |= IM_READ_CONTROL;
- scb->enable |= IM_BYPASS_BUFFER;
- scb->u1.scsi_cmd_length = cmd->cmd_len;
- memcpy(scb->u2.scsi_command, cmd->cmnd, cmd->cmd_len);
- last_scsi_type(shpnt)[ldn] = IM_LONG_SCB;
- /* Read/write on this non-disk devices is also displayworthy,
- so flash-up the LED/display. */
- break;
- }
- break;
- case INQUIRY:
- IBM_DS(shpnt).ldn_inquiry_access[ldn]++;
- scb->command = IM_DEVICE_INQUIRY_CMD;
- scb->enable |= IM_READ_CONTROL | IM_SUPRESS_EXCEPTION_SHORT | IM_BYPASS_BUFFER;
- scb->u1.log_blk_adr = 0;
- break;
- case TEST_UNIT_READY:
- scb->command = IM_OTHER_SCSI_CMD_CMD;
- scb->enable |= IM_READ_CONTROL | IM_SUPRESS_EXCEPTION_SHORT | IM_BYPASS_BUFFER;
- scb->u1.log_blk_adr = 0;
- scb->u1.scsi_cmd_length = 6;
- memcpy(scb->u2.scsi_command, cmd->cmnd, 6);
- last_scsi_type(shpnt)[ldn] = IM_LONG_SCB;
- break;
- case READ_CAPACITY:
- /* the length of system memory buffer must be exactly 8 bytes */
- scb->command = IM_READ_CAPACITY_CMD;
- scb->enable |= IM_READ_CONTROL | IM_BYPASS_BUFFER;
- if (scb->sys_buf_length > 8)
- scb->sys_buf_length = 8;
- break;
- /* Commands that need read-only-mode (system <- device): */
- case REQUEST_SENSE:
- scb->command = IM_REQUEST_SENSE_CMD;
- scb->enable |= IM_READ_CONTROL | IM_SUPRESS_EXCEPTION_SHORT | IM_BYPASS_BUFFER;
- break;
- /* Commands that need write-only-mode (system -> device): */
- case MODE_SELECT:
- case MODE_SELECT_10:
- IBM_DS(shpnt).ldn_modeselect_access[ldn]++;
- scb->command = IM_OTHER_SCSI_CMD_CMD;
- scb->enable |= IM_SUPRESS_EXCEPTION_SHORT | IM_BYPASS_BUFFER; /*Select needs WRITE-enabled */
- scb->u1.scsi_cmd_length = cmd->cmd_len;
- memcpy(scb->u2.scsi_command, cmd->cmnd, cmd->cmd_len);
- last_scsi_type(shpnt)[ldn] = IM_LONG_SCB;
- break;
- /* For other commands, read-only is useful. Most other commands are
- running without an input-data-block. */
- default:
- scb->command = IM_OTHER_SCSI_CMD_CMD;
- scb->enable |= IM_READ_CONTROL | IM_SUPRESS_EXCEPTION_SHORT | IM_BYPASS_BUFFER;
- scb->u1.scsi_cmd_length = cmd->cmd_len;
- memcpy(scb->u2.scsi_command, cmd->cmnd, cmd->cmd_len);
- last_scsi_type(shpnt)[ldn] = IM_LONG_SCB;
- break;
- }
- /*issue scb command, and return */
- if (++disk_rw_in_progress == 1)
- PS2_DISK_LED_ON(shpnt->host_no, target);
-
- if (last_scsi_type(shpnt)[ldn] == IM_LONG_SCB) {
- issue_cmd(shpnt, isa_virt_to_bus(scb), IM_LONG_SCB | ldn);
- IBM_DS(shpnt).long_scbs++;
- } else {
- issue_cmd(shpnt, isa_virt_to_bus(scb), IM_SCB | ldn);
- IBM_DS(shpnt).scbs++;
- }
- return 0;
-}
-
-static DEF_SCSI_QCMD(ibmmca_queuecommand)
-
-static int __ibmmca_abort(Scsi_Cmnd * cmd)
-{
- /* Abort does not work, as the adapter never generates an interrupt on
- * whatever situation is simulated, even when really pending commands
- * are running on the adapters' hardware ! */
-
- struct Scsi_Host *shpnt;
- unsigned int ldn;
- void (*saved_done) (Scsi_Cmnd *);
- int target;
- int max_pun;
- unsigned long imm_command;
-
-#ifdef IM_DEBUG_PROBE
- printk("IBM MCA SCSI: Abort subroutine called...\n");
-#endif
-
- shpnt = cmd->device->host;
-
- max_pun = subsystem_maxid(shpnt);
- if (ibm_ansi_order) {
- target = max_pun - 1 - cmd->device->id;
- if ((target <= subsystem_pun(shpnt)) && (cmd->device->id <= subsystem_pun(shpnt)))
- target--;
- else if ((target >= subsystem_pun(shpnt)) && (cmd->device->id >= subsystem_pun(shpnt)))
- target++;
- } else
- target = cmd->device->id;
-
- /* get logical device number, and disable system interrupts */
- printk(KERN_WARNING "IBM MCA SCSI: Sending abort to device pun=%d, lun=%d.\n", target, cmd->device->lun);
- ldn = get_ldn(shpnt)[target][cmd->device->lun];
-
- /*if cmd for this ldn has already finished, no need to abort */
- if (!ld(shpnt)[ldn].cmd) {
- return SUCCESS;
- }
-
- /* Clear ld.cmd, save done function, install internal done,
- * send abort immediate command (this enables sys. interrupts),
- * and wait until the interrupt arrives.
- */
- saved_done = cmd->scsi_done;
- cmd->scsi_done = internal_done;
- cmd->SCp.Status = 0;
- last_scsi_command(shpnt)[ldn] = IM_ABORT_IMM_CMD;
- last_scsi_type(shpnt)[ldn] = IM_IMM_CMD;
- imm_command = inl(IM_CMD_REG(shpnt));
- imm_command &= (unsigned long) (0xffff0000); /* mask reserved stuff */
- imm_command |= (unsigned long) (IM_ABORT_IMM_CMD);
- /* must wait for attention reg not busy */
- /* FIXME - timeout, politeness */
- while (1) {
- if (!(inb(IM_STAT_REG(shpnt)) & IM_BUSY))
- break;
- }
- /* write registers and enable system interrupts */
- outl(imm_command, IM_CMD_REG(shpnt));
- outb(IM_IMM_CMD | ldn, IM_ATTN_REG(shpnt));
-#ifdef IM_DEBUG_PROBE
- printk("IBM MCA SCSI: Abort queued to adapter...\n");
-#endif
- spin_unlock_irq(shpnt->host_lock);
- while (!cmd->SCp.Status)
- yield();
- spin_lock_irq(shpnt->host_lock);
- cmd->scsi_done = saved_done;
-#ifdef IM_DEBUG_PROBE
- printk("IBM MCA SCSI: Abort returned with adapter response...\n");
-#endif
-
- /*if abort went well, call saved done, then return success or error */
- if (cmd->result == (DID_ABORT << 16))
- {
- cmd->result |= DID_ABORT << 16;
- if (cmd->scsi_done)
- (cmd->scsi_done) (cmd);
- ld(shpnt)[ldn].cmd = NULL;
-#ifdef IM_DEBUG_PROBE
- printk("IBM MCA SCSI: Abort finished with success.\n");
-#endif
- return SUCCESS;
- } else {
- cmd->result |= DID_NO_CONNECT << 16;
- if (cmd->scsi_done)
- (cmd->scsi_done) (cmd);
- ld(shpnt)[ldn].cmd = NULL;
-#ifdef IM_DEBUG_PROBE
- printk("IBM MCA SCSI: Abort failed.\n");
-#endif
- return FAILED;
- }
-}
-
-static int ibmmca_abort(Scsi_Cmnd * cmd)
-{
- struct Scsi_Host *shpnt = cmd->device->host;
- int rc;
-
- spin_lock_irq(shpnt->host_lock);
- rc = __ibmmca_abort(cmd);
- spin_unlock_irq(shpnt->host_lock);
-
- return rc;
-}
-
-static int __ibmmca_host_reset(Scsi_Cmnd * cmd)
-{
- struct Scsi_Host *shpnt;
- Scsi_Cmnd *cmd_aid;
- int ticks, i;
- unsigned long imm_command;
-
- BUG_ON(cmd == NULL);
-
- ticks = IM_RESET_DELAY * HZ;
- shpnt = cmd->device->host;
-
- if (local_checking_phase_flag(shpnt)) {
- printk(KERN_WARNING "IBM MCA SCSI: unable to reset while checking devices.\n");
- return FAILED;
- }
-
- /* issue reset immediate command to subsystem, and wait for interrupt */
- printk("IBM MCA SCSI: resetting all devices.\n");
- reset_status(shpnt) = IM_RESET_IN_PROGRESS;
- last_scsi_command(shpnt)[0xf] = IM_RESET_IMM_CMD;
- last_scsi_type(shpnt)[0xf] = IM_IMM_CMD;
- imm_command = inl(IM_CMD_REG(shpnt));
- imm_command &= (unsigned long) (0xffff0000); /* mask reserved stuff */
- imm_command |= (unsigned long) (IM_RESET_IMM_CMD);
- /* must wait for attention reg not busy */
- while (1) {
- if (!(inb(IM_STAT_REG(shpnt)) & IM_BUSY))
- break;
- spin_unlock_irq(shpnt->host_lock);
- yield();
- spin_lock_irq(shpnt->host_lock);
- }
- /*write registers and enable system interrupts */
- outl(imm_command, IM_CMD_REG(shpnt));
- outb(IM_IMM_CMD | 0xf, IM_ATTN_REG(shpnt));
- /* wait for interrupt finished or intr_stat register to be set, as the
- * interrupt will not be executed, while we are in here! */
-
- /* FIXME: This is really really icky we so want a sleeping version of this ! */
- while (reset_status(shpnt) == IM_RESET_IN_PROGRESS && --ticks && ((inb(IM_INTR_REG(shpnt)) & 0x8f) != 0x8f)) {
- udelay((1 + 999 / HZ) * 1000);
- barrier();
- }
- /* if reset did not complete, just return an error */
- if (!ticks) {
- printk(KERN_ERR "IBM MCA SCSI: reset did not complete within %d seconds.\n", IM_RESET_DELAY);
- reset_status(shpnt) = IM_RESET_FINISHED_FAIL;
- return FAILED;
- }
-
- if ((inb(IM_INTR_REG(shpnt)) & 0x8f) == 0x8f) {
- /* analysis done by this routine and not by the intr-routine */
- if (inb(IM_INTR_REG(shpnt)) == 0xaf)
- reset_status(shpnt) = IM_RESET_FINISHED_OK_NO_INT;
- else if (inb(IM_INTR_REG(shpnt)) == 0xcf)
- reset_status(shpnt) = IM_RESET_FINISHED_FAIL;
- else /* failed, 4get it */
- reset_status(shpnt) = IM_RESET_NOT_IN_PROGRESS_NO_INT;
- outb(IM_EOI | 0xf, IM_ATTN_REG(shpnt));
- }
-
- /* if reset failed, just return an error */
- if (reset_status(shpnt) == IM_RESET_FINISHED_FAIL) {
- printk(KERN_ERR "IBM MCA SCSI: reset failed.\n");
- return FAILED;
- }
-
- /* so reset finished ok - call outstanding done's, and return success */
- printk(KERN_INFO "IBM MCA SCSI: Reset successfully completed.\n");
- for (i = 0; i < MAX_LOG_DEV; i++) {
- cmd_aid = ld(shpnt)[i].cmd;
- if (cmd_aid && cmd_aid->scsi_done) {
- ld(shpnt)[i].cmd = NULL;
- cmd_aid->result = DID_RESET << 16;
- }
- }
- return SUCCESS;
-}
-
-static int ibmmca_host_reset(Scsi_Cmnd * cmd)
-{
- struct Scsi_Host *shpnt = cmd->device->host;
- int rc;
-
- spin_lock_irq(shpnt->host_lock);
- rc = __ibmmca_host_reset(cmd);
- spin_unlock_irq(shpnt->host_lock);
-
- return rc;
-}
-
-static int ibmmca_biosparam(struct scsi_device *sdev, struct block_device *bdev, sector_t capacity, int *info)
-{
- int size = capacity;
- info[0] = 64;
- info[1] = 32;
- info[2] = size / (info[0] * info[1]);
- if (info[2] >= 1024) {
- info[0] = 128;
- info[1] = 63;
- info[2] = size / (info[0] * info[1]);
- if (info[2] >= 1024) {
- info[0] = 255;
- info[1] = 63;
- info[2] = size / (info[0] * info[1]);
- if (info[2] >= 1024)
- info[2] = 1023;
- }
- }
- return 0;
-}
-
-/* calculate percentage of total accesses on a ldn */
-static int ldn_access_load(struct Scsi_Host *shpnt, int ldn)
-{
- if (IBM_DS(shpnt).total_accesses == 0)
- return (0);
- if (IBM_DS(shpnt).ldn_access[ldn] == 0)
- return (0);
- return (IBM_DS(shpnt).ldn_access[ldn] * 100) / IBM_DS(shpnt).total_accesses;
-}
-
-/* calculate total amount of r/w-accesses */
-static int ldn_access_total_read_write(struct Scsi_Host *shpnt)
-{
- int a;
- int i;
-
- a = 0;
- for (i = 0; i <= MAX_LOG_DEV; i++)
- a += IBM_DS(shpnt).ldn_read_access[i] + IBM_DS(shpnt).ldn_write_access[i];
- return (a);
-}
-
-static int ldn_access_total_inquiry(struct Scsi_Host *shpnt)
-{
- int a;
- int i;
-
- a = 0;
- for (i = 0; i <= MAX_LOG_DEV; i++)
- a += IBM_DS(shpnt).ldn_inquiry_access[i];
- return (a);
-}
-
-static int ldn_access_total_modeselect(struct Scsi_Host *shpnt)
-{
- int a;
- int i;
-
- a = 0;
- for (i = 0; i <= MAX_LOG_DEV; i++)
- a += IBM_DS(shpnt).ldn_modeselect_access[i];
- return (a);
-}
-
-/* routine to display info in the proc-fs-structure (a deluxe feature) */
-static int ibmmca_proc_info(struct Scsi_Host *shpnt, char *buffer, char **start, off_t offset, int length, int inout)
-{
- int len = 0;
- int i, id, lun;
- unsigned long flags;
- int max_pun;
-
-
- spin_lock_irqsave(shpnt->host_lock, flags); /* Check it */
-
- max_pun = subsystem_maxid(shpnt);
-
- len += sprintf(buffer + len, "\n IBM-SCSI-Subsystem-Linux-Driver, Version %s\n\n\n", IBMMCA_SCSI_DRIVER_VERSION);
- len += sprintf(buffer + len, " SCSI Access-Statistics:\n");
- len += sprintf(buffer + len, " Device Scanning Order....: %s\n", (ibm_ansi_order) ? "IBM/ANSI" : "New Industry Standard");
-#ifdef CONFIG_SCSI_MULTI_LUN
- len += sprintf(buffer + len, " Multiple LUN probing.....: Yes\n");
-#else
- len += sprintf(buffer + len, " Multiple LUN probing.....: No\n");
-#endif
- len += sprintf(buffer + len, " This Hostnumber..........: %d\n", shpnt->host_no);
- len += sprintf(buffer + len, " Base I/O-Port............: 0x%x\n", (unsigned int) (IM_CMD_REG(shpnt)));
- len += sprintf(buffer + len, " (Shared) IRQ.............: %d\n", IM_IRQ);
- len += sprintf(buffer + len, " Total Interrupts.........: %d\n", IBM_DS(shpnt).total_interrupts);
- len += sprintf(buffer + len, " Total SCSI Accesses......: %d\n", IBM_DS(shpnt).total_accesses);
- len += sprintf(buffer + len, " Total short SCBs.........: %d\n", IBM_DS(shpnt).scbs);
- len += sprintf(buffer + len, " Total long SCBs..........: %d\n", IBM_DS(shpnt).long_scbs);
- len += sprintf(buffer + len, " Total SCSI READ/WRITE..: %d\n", ldn_access_total_read_write(shpnt));
- len += sprintf(buffer + len, " Total SCSI Inquiries...: %d\n", ldn_access_total_inquiry(shpnt));
- len += sprintf(buffer + len, " Total SCSI Modeselects.: %d\n", ldn_access_total_modeselect(shpnt));
- len += sprintf(buffer + len, " Total SCSI other cmds..: %d\n", IBM_DS(shpnt).total_accesses - ldn_access_total_read_write(shpnt)
- - ldn_access_total_modeselect(shpnt)
- - ldn_access_total_inquiry(shpnt));
- len += sprintf(buffer + len, " Total SCSI command fails.: %d\n\n", IBM_DS(shpnt).total_errors);
- len += sprintf(buffer + len, " Logical-Device-Number (LDN) Access-Statistics:\n");
- len += sprintf(buffer + len, " LDN | Accesses [%%] | READ | WRITE | ASSIGNMENTS\n");
- len += sprintf(buffer + len, " -----|--------------|-----------|-----------|--------------\n");
- for (i = 0; i <= MAX_LOG_DEV; i++)
- len += sprintf(buffer + len, " %2X | %3d | %8d | %8d | %8d\n", i, ldn_access_load(shpnt, i), IBM_DS(shpnt).ldn_read_access[i], IBM_DS(shpnt).ldn_write_access[i], IBM_DS(shpnt).ldn_assignments[i]);
- len += sprintf(buffer + len, " -----------------------------------------------------------\n\n");
- len += sprintf(buffer + len, " Dynamical-LDN-Assignment-Statistics:\n");
- len += sprintf(buffer + len, " Number of physical SCSI-devices..: %d (+ Adapter)\n", IBM_DS(shpnt).total_scsi_devices);
- len += sprintf(buffer + len, " Dynamical Assignment necessary...: %s\n", IBM_DS(shpnt).dyn_flag ? "Yes" : "No ");
- len += sprintf(buffer + len, " Next LDN to be assigned..........: 0x%x\n", next_ldn(shpnt));
- len += sprintf(buffer + len, " Dynamical assignments done yet...: %d\n", IBM_DS(shpnt).dynamical_assignments);
- len += sprintf(buffer + len, "\n Current SCSI-Device-Mapping:\n");
- len += sprintf(buffer + len, " Physical SCSI-Device Map Logical SCSI-Device Map\n");
- len += sprintf(buffer + len, " ID\\LUN 0 1 2 3 4 5 6 7 ID\\LUN 0 1 2 3 4 5 6 7\n");
- for (id = 0; id < max_pun; id++) {
- len += sprintf(buffer + len, " %2d ", id);
- for (lun = 0; lun < 8; lun++)
- len += sprintf(buffer + len, "%2s ", ti_p(get_scsi(shpnt)[id][lun]));
- len += sprintf(buffer + len, " %2d ", id);
- for (lun = 0; lun < 8; lun++)
- len += sprintf(buffer + len, "%2s ", ti_l(get_ldn(shpnt)[id][lun]));
- len += sprintf(buffer + len, "\n");
- }
-
- len += sprintf(buffer + len, "(A = IBM-Subsystem, D = Harddisk, T = Tapedrive, P = Processor, W = WORM,\n");
- len += sprintf(buffer + len, " R = CD-ROM, S = Scanner, M = MO-Drive, C = Medium-Changer, + = unprovided LUN,\n");
- len += sprintf(buffer + len, " - = nothing found, nothing assigned or unprobed LUN)\n\n");
-
- *start = buffer + offset;
- len -= offset;
- if (len > length)
- len = length;
- spin_unlock_irqrestore(shpnt->host_lock, flags);
- return len;
-}
-
-static int option_setup(char *str)
-{
- int ints[IM_MAX_HOSTS];
- char *cur = str;
- int i = 1;
-
- while (cur && isdigit(*cur) && i < IM_MAX_HOSTS) {
- ints[i++] = simple_strtoul(cur, NULL, 0);
- if ((cur = strchr(cur, ',')) != NULL)
- cur++;
- }
- ints[0] = i - 1;
- internal_ibmmca_scsi_setup(cur, ints);
- return 1;
-}
-
-__setup("ibmmcascsi=", option_setup);
-
-static struct mca_driver ibmmca_driver = {
- .id_table = ibmmca_id_table,
- .driver = {
- .name = "ibmmca",
- .bus = &mca_bus_type,
- .probe = ibmmca_probe,
- .remove = __devexit_p(ibmmca_remove),
- },
-};
-
-static int __init ibmmca_init(void)
-{
-#ifdef MODULE
- /* If the driver is run as module, read from conf.modules or cmd-line */
- if (boot_options)
- option_setup(boot_options);
-#endif
-
- return mca_register_driver_integrated(&ibmmca_driver, MCA_INTEGSCSI);
-}
-
-static void __exit ibmmca_exit(void)
-{
- mca_unregister_driver(&ibmmca_driver);
-}
-
-module_init(ibmmca_init);
-module_exit(ibmmca_exit);