summaryrefslogtreecommitdiff
path: root/drivers/scsi/ibmmca.c
diff options
context:
space:
mode:
authorLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 15:20:36 -0700
committerLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 15:20:36 -0700
commit1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch)
tree0bba044c4ce775e45a88a51686b5d9f90697ea9d /drivers/scsi/ibmmca.c
Linux-2.6.12-rc2
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
Diffstat (limited to 'drivers/scsi/ibmmca.c')
-rw-r--r--drivers/scsi/ibmmca.c2491
1 files changed, 2491 insertions, 0 deletions
diff --git a/drivers/scsi/ibmmca.c b/drivers/scsi/ibmmca.c
new file mode 100644
index 000000000000..a3fdead9bce9
--- /dev/null
+++ b/drivers/scsi/ibmmca.c
@@ -0,0 +1,2491 @@
+/*
+ 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@redhat.com>
+ 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/config.h>
+#ifndef LINUX_VERSION_CODE
+#include <linux/version.h>
+#endif
+#if LINUX_VERSION_CODE < KERNEL_VERSION(2,5,45)
+#error "This driver works only with kernel 2.5.45 or higher!"
+#endif
+#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/string.h>
+#include <linux/spinlock.h>
+#include <linux/init.h>
+#include <linux/mca-legacy.h>
+
+#include <asm/system.h>
+#include <asm/io.h>
+
+#include "scsi.h"
+#include <scsi/scsi_host.h>
+#include "ibmmca.h"
+
+/* 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(hi) (hosts[(hi)]->io_port) /*Command Interface, (4 bytes long) */
+#define IM_ATTN_REG(hi) (hosts[(hi)]->io_port+4) /*Attention (1 byte) */
+#define IM_CTR_REG(hi) (hosts[(hi)]->io_port+5) /*Basic Control (1 byte) */
+#define IM_INTR_REG(hi) (hosts[(hi)]->io_port+6) /*Interrupt Status (1 byte, r/o) */
+#define IM_STAT_REG(hi) (hosts[(hi)]->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); }
+
+/*list of supported subsystems */
+struct subsys_list_struct {
+ unsigned short mca_id;
+ char *description;
+};
+
+/* 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
+
+/* other special flags for hostdata structure */
+#define FORCED_DETECTION 100
+#define INTEGRATED_SCSI 101
+
+/* List of possible IBM-SCSI-adapters */
+static struct subsys_list_struct subsys_list[] = {
+ {0x8efc, "IBM SCSI-2 F/W Adapter"}, /* special = 0 */
+ {0x8efd, "IBM 7568 Industrial Computer SCSI Adapter w/Cache"}, /* special = 1 */
+ {0x8ef8, "IBM Expansion Unit SCSI Controller"}, /* special = 2 */
+ {0x8eff, "IBM SCSI Adapter w/Cache"}, /* special = 3 */
+ {0x8efe, "IBM SCSI Adapter"}, /* special = 4 */
+};
+
+/* 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(hi) (hosts[(hi)]->this_id)
+#define subsystem_maxid(hi) (hosts[(hi)]->max_id)
+#define ld(hi) (((struct ibmmca_hostdata *) hosts[(hi)]->hostdata)->_ld)
+#define get_ldn(hi) (((struct ibmmca_hostdata *) hosts[(hi)]->hostdata)->_get_ldn)
+#define get_scsi(hi) (((struct ibmmca_hostdata *) hosts[(hi)]->hostdata)->_get_scsi)
+#define local_checking_phase_flag(hi) (((struct ibmmca_hostdata *) hosts[(hi)]->hostdata)->_local_checking_phase_flag)
+#define got_interrupt(hi) (((struct ibmmca_hostdata *) hosts[(hi)]->hostdata)->_got_interrupt)
+#define stat_result(hi) (((struct ibmmca_hostdata *) hosts[(hi)]->hostdata)->_stat_result)
+#define reset_status(hi) (((struct ibmmca_hostdata *) hosts[(hi)]->hostdata)->_reset_status)
+#define last_scsi_command(hi) (((struct ibmmca_hostdata *) hosts[(hi)]->hostdata)->_last_scsi_command)
+#define last_scsi_type(hi) (((struct ibmmca_hostdata *) hosts[(hi)]->hostdata)->_last_scsi_type)
+#define last_scsi_blockcount(hi) (((struct ibmmca_hostdata *) hosts[(hi)]->hostdata)->_last_scsi_blockcount)
+#define last_scsi_logical_block(hi) (((struct ibmmca_hostdata *) hosts[(hi)]->hostdata)->_last_scsi_logical_block)
+#define last_scsi_type(hi) (((struct ibmmca_hostdata *) hosts[(hi)]->hostdata)->_last_scsi_type)
+#define next_ldn(hi) (((struct ibmmca_hostdata *) hosts[(hi)]->hostdata)->_next_ldn)
+#define IBM_DS(hi) (((struct ibmmca_hostdata *) hosts[(hi)]->hostdata)->_IBM_DS)
+#define special(hi) (((struct ibmmca_hostdata *) hosts[(hi)]->hostdata)->_special)
+#define subsystem_connector_size(hi) (((struct ibmmca_hostdata *) hosts[(hi)]->hostdata)->_connector_size)
+#define adapter_speed(hi) (((struct ibmmca_hostdata *) hosts[(hi)]->hostdata)->_adapter_speed)
+#define pos2(hi) (((struct ibmmca_hostdata *) hosts[(hi)]->hostdata)->_pos[2])
+#define pos3(hi) (((struct ibmmca_hostdata *) hosts[(hi)]->hostdata)->_pos[3])
+#define pos4(hi) (((struct ibmmca_hostdata *) hosts[(hi)]->hostdata)->_pos[4])
+#define pos5(hi) (((struct ibmmca_hostdata *) hosts[(hi)]->hostdata)->_pos[5])
+#define pos6(hi) (((struct ibmmca_hostdata *) hosts[(hi)]->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);
+
+#if 0 /* FIXME: No longer exist? --RR */
+MODULE_PARM(display, "1i");
+MODULE_PARM(adisplay, "1i");
+MODULE_PARM(normal, "1i");
+MODULE_PARM(ansi, "1i");
+#endif
+#endif
+/*counter of concurrent disk read/writes, to turn on/off disk led */
+static int disk_rw_in_progress = 0;
+
+/* host information */
+static int found = 0;
+static struct Scsi_Host *hosts[IM_MAX_HOSTS + 1] = {
+ NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL
+};
+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(int, unsigned long, unsigned char);
+static void internal_done(Scsi_Cmnd * cmd);
+static void check_devices(int, int);
+static int immediate_assign(int, unsigned int, unsigned int, unsigned int, unsigned int);
+static int immediate_feature(int, unsigned int, unsigned int);
+#ifdef CONFIG_IBMMCA_SCSI_DEV_RESET
+static int immediate_reset(int, unsigned int);
+#endif
+static int device_inquiry(int, int);
+static int read_capacity(int, int);
+static int get_pos_info(int);
+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(int);
+static int device_exists(int, int, int *, int *);
+static struct Scsi_Host *ibmmca_register(Scsi_Host_Template *, int, int, int, char *);
+static int option_setup(char *);
+/* local functions needed for proc_info */
+static int ldn_access_load(int, int);
+static int ldn_access_total_read_write(int);
+
+static irqreturn_t interrupt_handler(int irq, void *dev_id,
+ struct pt_regs *regs)
+{
+ int host_index, ihost_index;
+ unsigned int intr_reg;
+ unsigned int cmd_result;
+ unsigned int ldn;
+ Scsi_Cmnd *cmd;
+ int lastSCSI;
+ struct Scsi_Host *dev = dev_id;
+
+ spin_lock(dev->host_lock);
+ /* search for one adapter-response on shared interrupt */
+ for (host_index = 0; hosts[host_index] && !(inb(IM_STAT_REG(host_index)) & IM_INTR_REQUEST); host_index++);
+ /* return if some other device on this IRQ caused the interrupt */
+ if (!hosts[host_index]) {
+ spin_unlock(dev->host_lock);
+ return IRQ_NONE;
+ }
+
+ /* the reset-function already did all the job, even ints got
+ renabled on the subsystem, so just return */
+ if ((reset_status(host_index) == IM_RESET_NOT_IN_PROGRESS_NO_INT) || (reset_status(host_index) == IM_RESET_FINISHED_OK_NO_INT)) {
+ reset_status(host_index) = IM_RESET_NOT_IN_PROGRESS;
+ spin_unlock(dev->host_lock);
+ return IRQ_HANDLED;
+ }
+
+ /*must wait for attention reg not busy, then send EOI to subsystem */
+ while (1) {
+ if (!(inb(IM_STAT_REG(host_index)) & IM_BUSY))
+ break;
+ cpu_relax();
+ }
+ ihost_index = host_index;
+ /*get command result and logical device */
+ intr_reg = (unsigned char) (inb(IM_INTR_REG(ihost_index)));
+ cmd_result = intr_reg & 0xf0;
+ ldn = intr_reg & 0x0f;
+ /* get the last_scsi_command here */
+ lastSCSI = last_scsi_command(ihost_index)[ldn];
+ outb(IM_EOI | ldn, IM_ATTN_REG(ihost_index));
+
+ /*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(ihost_index)[ldn].scb.enable);
+ if (ld(ihost_index)[ldn].cmd)
+ printk("%ld/%ld,", (long) (ld(ihost_index)[ldn].cmd->request_bufflen), (long) (ld(ihost_index)[ldn].scb.sys_buf_length));
+ else
+ printk("none,");
+ if (ld(ihost_index)[ldn].cmd)
+ printk("Blocksize=%d", ld(ihost_index)[ldn].scb.u2.blk.length);
+ else
+ printk("Blocksize=none");
+ printk(", host=0x%x, ldn=0x%x\n", ihost_index, ldn);
+ if (ld(ihost_index)[ldn].cmd) {
+ printk(KERN_ERR "Blockcount=%d/%d\n", last_scsi_blockcount(ihost_index)[ldn], ld(ihost_index)[ldn].scb.u2.blk.count);
+ printk(KERN_ERR "Logical block=%lx/%lx\n", last_scsi_logical_block(ihost_index)[ldn], ld(ihost_index)[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(ihost_index)[ldn]);
+ printk(KERN_ERR " Attention Register..........: %x\n", inb(IM_ATTN_REG(ihost_index)));
+ printk(KERN_ERR " Basic Control Register......: %x\n", inb(IM_CTR_REG(ihost_index)));
+ printk(KERN_ERR " Interrupt Status Register...: %x\n", intr_reg);
+ printk(KERN_ERR " Basic Status Register.......: %x\n", inb(IM_STAT_REG(ihost_index)));
+ if ((last_scsi_type(ihost_index)[ldn] == IM_SCB) || (last_scsi_type(ihost_index)[ldn] == IM_LONG_SCB)) {
+ printk(KERN_ERR " SCB-Command.................: %x\n", ld(ihost_index)[ldn].scb.command);
+ printk(KERN_ERR " SCB-Enable..................: %x\n", ld(ihost_index)[ldn].scb.enable);
+ printk(KERN_ERR " SCB-logical block address...: %lx\n", ld(ihost_index)[ldn].scb.u1.log_blk_adr);
+ printk(KERN_ERR " SCB-system buffer address...: %lx\n", ld(ihost_index)[ldn].scb.sys_buf_adr);
+ printk(KERN_ERR " SCB-system buffer length....: %lx\n", ld(ihost_index)[ldn].scb.sys_buf_length);
+ printk(KERN_ERR " SCB-tsb address.............: %lx\n", ld(ihost_index)[ldn].scb.tsb_adr);
+ printk(KERN_ERR " SCB-Chain address...........: %lx\n", ld(ihost_index)[ldn].scb.scb_chain_adr);
+ printk(KERN_ERR " SCB-block count.............: %x\n", ld(ihost_index)[ldn].scb.u2.blk.count);
+ printk(KERN_ERR " SCB-block length............: %x\n", ld(ihost_index)[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(ihost_index).total_interrupts++;
+ /*only for local checking phase */
+ if (local_checking_phase_flag(ihost_index)) {
+ stat_result(ihost_index) = cmd_result;
+ got_interrupt(ihost_index) = 1;
+ reset_status(ihost_index) = IM_RESET_FINISHED_OK;
+ last_scsi_command(ihost_index)[ldn] = NO_SCSI;
+ spin_unlock(dev->host_lock);
+ return IRQ_HANDLED;
+ }
+ /* handling of commands coming from upper level of scsi driver */
+ if (last_scsi_type(ihost_index)[ldn] == IM_IMM_CMD) {
+ /* verify ldn, and may handle rare reset immediate command */
+ if ((reset_status(ihost_index) == IM_RESET_IN_PROGRESS) && (last_scsi_command(ihost_index)[ldn] == IM_RESET_IMM_CMD)) {
+ if (cmd_result == IM_CMD_COMPLETED_WITH_FAILURE) {
+ disk_rw_in_progress = 0;
+ PS2_DISK_LED_OFF();
+ reset_status(ihost_index) = IM_RESET_FINISHED_FAIL;
+ } else {
+ /*reset disk led counter, turn off disk led */
+ disk_rw_in_progress = 0;
+ PS2_DISK_LED_OFF();
+ reset_status(ihost_index) = IM_RESET_FINISHED_OK;
+ }
+ stat_result(ihost_index) = cmd_result;
+ last_scsi_command(ihost_index)[ldn] = NO_SCSI;
+ last_scsi_type(ihost_index)[ldn] = 0;
+ spin_unlock(dev->host_lock);
+ return IRQ_HANDLED;
+ } else if (last_scsi_command(ihost_index)[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(ihost_index)[ldn].cmd;
+ ld(ihost_index)[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(ihost_index) = cmd_result;
+ last_scsi_command(ihost_index)[ldn] = NO_SCSI;
+ last_scsi_type(ihost_index)[ldn] = 0;
+ if (cmd->scsi_done)
+ (cmd->scsi_done) (cmd); /* should be the internal_done */
+ spin_unlock(dev->host_lock);
+ return IRQ_HANDLED;
+ } else {
+ disk_rw_in_progress = 0;
+ PS2_DISK_LED_OFF();
+ reset_status(ihost_index) = IM_RESET_FINISHED_OK;
+ stat_result(ihost_index) = cmd_result;
+ last_scsi_command(ihost_index)[ldn] = NO_SCSI;
+ spin_unlock(dev->host_lock);
+ return IRQ_HANDLED;
+ }
+ }
+ last_scsi_command(ihost_index)[ldn] = NO_SCSI;
+ last_scsi_type(ihost_index)[ldn] = 0;
+ cmd = ld(ihost_index)[ldn].cmd;
+ ld(ihost_index)[ldn].cmd = NULL;
+#ifdef IM_DEBUG_TIMEOUT
+ if (cmd) {
+ if ((cmd->target == TIMEOUT_PUN) && (cmd->device->lun == TIMEOUT_LUN)) {
+ 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(dev->host_lock);
+ 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(ihost_index)[ldn].tsb.dev_status, ld(ihost_index)[ldn].tsb.cmd_status, ld(ihost_index)[ldn].tsb.dev_error, ld(ihost_index)[ldn].tsb.cmd_error);
+#endif
+ /*if this is end of media read/write, may turn off PS/2 disk led */
+ if ((ld(ihost_index)[ldn].device_type != TYPE_NO_LUN) && (ld(ihost_index)[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(ihost_index)[ldn].tsb.dev_status & 0x1e);
+ IBM_DS(ihost_index).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(dev->host_lock);
+ return IRQ_HANDLED;
+}
+
+static void issue_cmd(int host_index, unsigned long cmd_reg, unsigned char attn_reg)
+{
+ unsigned long flags;
+ /* must wait for attention reg not busy */
+ while (1) {
+ spin_lock_irqsave(hosts[host_index]->host_lock, flags);
+ if (!(inb(IM_STAT_REG(host_index)) & IM_BUSY))
+ break;
+ spin_unlock_irqrestore(hosts[host_index]->host_lock, flags);
+ }
+ /* write registers and enable system interrupts */
+ outl(cmd_reg, IM_CMD_REG(host_index));
+ outb(attn_reg, IM_ATTN_REG(host_index));
+ spin_unlock_irqrestore(hosts[host_index]->host_lock, flags);
+}
+
+static void internal_done(Scsi_Cmnd * cmd)
+{
+ cmd->SCp.Status++;
+ return;
+}
+
+/* SCSI-SCB-command for device_inquiry */
+static int device_inquiry(int host_index, int ldn)
+{
+ int retr;
+ struct im_scb *scb;
+ struct im_tsb *tsb;
+ unsigned char *buf;
+
+ scb = &(ld(host_index)[ldn].scb);
+ tsb = &(ld(host_index)[ldn].tsb);
+ buf = (unsigned char *) (&(ld(host_index)[ldn].buf));
+ ld(host_index)[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(host_index)[ldn] = IM_DEVICE_INQUIRY_CMD;
+ last_scsi_type(host_index)[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(host_index) = 0;
+ issue_cmd(host_index, isa_virt_to_bus(scb), IM_SCB | ldn);
+ while (!got_interrupt(host_index))
+ barrier();
+
+ /*if command succesful, break */
+ if ((stat_result(host_index) == IM_SCB_CMD_COMPLETED) || (stat_result(host_index) == 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(int host_index, int ldn)
+{
+ int retr;
+ struct im_scb *scb;
+ struct im_tsb *tsb;
+ unsigned char *buf;
+
+ scb = &(ld(host_index)[ldn].scb);
+ tsb = &(ld(host_index)[ldn].tsb);
+ buf = (unsigned char *) (&(ld(host_index)[ldn].buf));
+ ld(host_index)[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(host_index)[ldn] = IM_READ_CAPACITY_CMD;
+ last_scsi_type(host_index)[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(host_index) = 0;
+ issue_cmd(host_index, isa_virt_to_bus(scb), IM_SCB | ldn);
+ while (!got_interrupt(host_index))
+ barrier();
+
+ /*if got capacity, get block length and return one device found */
+ if ((stat_result(host_index) == IM_SCB_CMD_COMPLETED) || (stat_result(host_index) == 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(int host_index)
+{
+ int retr;
+ struct im_scb *scb;
+ struct im_tsb *tsb;
+ unsigned char *buf;
+
+ scb = &(ld(host_index)[MAX_LOG_DEV].scb);
+ tsb = &(ld(host_index)[MAX_LOG_DEV].tsb);
+ buf = (unsigned char *) (&(ld(host_index)[MAX_LOG_DEV].buf));
+ ld(host_index)[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(host_index)[MAX_LOG_DEV] = IM_GET_POS_INFO_CMD;
+ last_scsi_type(host_index)[MAX_LOG_DEV] = IM_SCB;
+ scb->sys_buf_adr = isa_virt_to_bus(buf);
+ if (special(host_index) == 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(host_index) = 0;
+ issue_cmd(host_index, isa_virt_to_bus(scb), IM_SCB | MAX_LOG_DEV);
+
+ /* FIXME: timeout */
+ while (!got_interrupt(host_index))
+ barrier();
+
+ /*if got POS-stuff, get block length and return one device found */
+ if ((stat_result(host_index) == IM_SCB_CMD_COMPLETED) || (stat_result(host_index) == 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(int host_index, 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(host_index)) {
+ 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(host_index));
+ 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(host_index)[MAX_LOG_DEV] = IM_ASSIGN_IMM_CMD;
+ last_scsi_type(host_index)[MAX_LOG_DEV] = IM_IMM_CMD;
+ got_interrupt(host_index) = 0;
+ issue_cmd(host_index, (unsigned long) (imm_cmd), IM_IMM_CMD | MAX_LOG_DEV);
+ while (!got_interrupt(host_index))
+ barrier();
+
+ /*if command succesful, break */
+ if (stat_result(host_index) == IM_IMMEDIATE_CMD_COMPLETED)
+ return 1;
+ }
+ if (retr >= 3)
+ return 0;
+ else
+ return 1;
+}
+
+static int immediate_feature(int host_index, 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(host_index)[MAX_LOG_DEV] = IM_FEATURE_CTR_IMM_CMD;
+ last_scsi_type(host_index)[MAX_LOG_DEV] = IM_IMM_CMD;
+ got_interrupt(host_index) = 0;
+ /* we need to run into command errors in order to probe for the
+ * right speed! */
+ global_command_error_excuse = 1;
+ issue_cmd(host_index, (unsigned long) (imm_cmd), IM_IMM_CMD | MAX_LOG_DEV);
+
+ /* FIXME: timeout */
+ while (!got_interrupt(host_index))
+ barrier();
+ if (global_command_error_excuse == CMD_FAIL) {
+ global_command_error_excuse = 0;
+ return 2;
+ } else
+ global_command_error_excuse = 0;
+ /*if command succesful, break */
+ if (stat_result(host_index) == IM_IMMEDIATE_CMD_COMPLETED)
+ return 1;
+ }
+ if (retr >= 3)
+ return 0;
+ else
+ return 1;
+}
+
+#ifdef CONFIG_IBMMCA_SCSI_DEV_RESET
+static int immediate_reset(int host_index, unsigned int ldn)
+{
+ int retries;
+ int ticks;
+ unsigned long imm_command;
+
+ for (retries = 0; retries < 3; retries++) {
+ imm_command = inl(IM_CMD_REG(host_index));
+ imm_command &= (unsigned long) (0xFFFF0000); /* keep reserved bits */
+ imm_command |= (unsigned long) (IM_RESET_IMM_CMD);
+ last_scsi_command(host_index)[ldn] = IM_RESET_IMM_CMD;
+ last_scsi_type(host_index)[ldn] = IM_IMM_CMD;
+ got_interrupt(host_index) = 0;
+ reset_status(host_index) = IM_RESET_IN_PROGRESS;
+ issue_cmd(host_index, (unsigned long) (imm_command), IM_IMM_CMD | ldn);
+ ticks = IM_RESET_DELAY * HZ;
+ while (reset_status(host_index) == 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(host_index) = IM_RESET_FINISHED_OK;
+ /* did not work, finish */
+ return 1;
+ }
+ /*if command succesful, break */
+ if (stat_result(host_index) == 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(int host_index)
+{
+ struct im_pos_info *info;
+ int num_bus = 0;
+ int ldn;
+
+ info = (struct im_pos_info *) (&(ld(host_index)[MAX_LOG_DEV].buf));
+ if (get_pos_info(host_index)) {
+ if (info->connector_size & 0xf000)
+ subsystem_connector_size(host_index) = 16;
+ else
+ subsystem_connector_size(host_index) = 32;
+ num_bus |= (info->pos_4b & 8) >> 3;
+ for (ldn = 0; ldn <= MAX_LOG_DEV; ldn++) {
+ if ((special(host_index) == IBM_SCSI_WCACHE) || (special(host_index) == IBM_7568_WCACHE)) {
+ if (!((info->cache_stat >> ldn) & 1))
+ ld(host_index)[ldn].cache_flag = 0;
+ }
+ if (!((info->retry_stat >> ldn) & 1))
+ ld(host_index)[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(host_index)[ldn].cache_flag);
+ }
+ printk("\nIBM MCA SCSI: SCSI-Retry bits: ");
+ for (ldn = 0; ldn <= MAX_LOG_DEV; ldn++) {
+ printk("%d", ld(host_index)[ldn].retry_flag);
+ }
+ printk("\n");
+#endif
+ }
+ return num_bus;
+}
+
+/* probing scsi devices */
+static void check_devices(int host_index, 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(host_index).dyn_flag = 0; /* normally no need for dynamical ldn management */
+ IBM_DS(host_index).total_errors = 0; /* set errorcounter to 0 */
+ next_ldn(host_index) = 7; /* next ldn to be assigned is 7, because 0-6 is 'hardwired' */
+
+ /* initialize the very important driver-informational arrays/structs */
+ memset(ld(host_index), 0, sizeof(ld(host_index)));
+ for (ldn = 0; ldn <= MAX_LOG_DEV; ldn++) {
+ last_scsi_command(host_index)[ldn] = NO_SCSI; /* emptify last SCSI-command storage */
+ last_scsi_type(host_index)[ldn] = 0;
+ ld(host_index)[ldn].cache_flag = 1;
+ ld(host_index)[ldn].retry_flag = 1;
+ }
+ memset(get_ldn(host_index), TYPE_NO_DEVICE, sizeof(get_ldn(host_index))); /* this is essential ! */
+ memset(get_scsi(host_index), TYPE_NO_DEVICE, sizeof(get_scsi(host_index))); /* this is essential ! */
+ for (lun = 0; lun < 8; lun++) {
+ /* mark the adapter at its pun on all luns */
+ get_scsi(host_index)[subsystem_pun(host_index)][lun] = TYPE_IBM_SCSI_ADAPTER;
+ get_ldn(host_index)[subsystem_pun(host_index)][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(host_index) = global_adapter_speed;
+ speedrun = adapter_speed(host_index);
+ while (immediate_feature(host_index, 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(host_index) = speedrun;
+ /* Get detailed information about the current adapter, necessary for
+ * device operations: */
+ num_bus = probe_bus_mode(host_index);
+
+ /* 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(host_index) = 16;
+ } else {
+ printk(KERN_INFO "IBM MCA SCSI: Combined bus mode (wide-addressing disabled)\n");
+ subsystem_maxid(host_index) = 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(host_index);
+
+#ifdef IM_DEBUG_PROBE
+ printk("IBM MCA SCSI: Current SCSI-host index: %d\n", host_index);
+ 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(host_index, 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(host_index)) {
+ /* if pun is not the adapter: */
+ /* set ldn=0 to pun,lun */
+ immediate_assign(host_index, id, lun, PROBE_LDN, SET_LDN);
+ if (device_inquiry(host_index, PROBE_LDN)) { /* probe device */
+ get_scsi(host_index)[id][lun] = (unsigned char) (ld(host_index)[PROBE_LDN].buf[0]);
+ /* entry, even for NO_LUN */
+ if (ld(host_index)[PROBE_LDN].buf[0] != TYPE_NO_LUN)
+ count_devices++; /* a existing device is found */
+ }
+ /* remove ldn */
+ immediate_assign(host_index, 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(host_index)) {
+ if (get_scsi(host_index)[id][lun] != TYPE_NO_LUN && get_scsi(host_index)[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(host_index, id, lun, ldn, SET_LDN);
+ get_ldn(host_index)[id][lun] = ldn; /* map ldn */
+ if (device_exists(host_index, ldn, &ld(host_index)[ldn].block_length, &ld(host_index)[ldn].device_type)) {
+#ifdef CONFIG_IBMMCA_SCSI_DEV_RESET
+ printk("resetting device at ldn=%x ... ", ldn);
+ immediate_reset(host_index, 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(host_index)[id][lun] = TYPE_NO_DEVICE;
+ immediate_assign(host_index, 0, 0, ldn, REMOVE_LDN);
+ } else
+ ldn++;
+ }
+ } else if (lun == 0) {
+ /* map lun == 0, even if no device exists */
+ immediate_assign(host_index, id, lun, ldn, SET_LDN);
+ get_ldn(host_index)[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(host_index)[id][lun] == TYPE_NO_LUN || get_scsi(host_index)[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(host_index, id, lun, ldn, SET_LDN);
+ get_ldn(host_index)[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(host_index)[id][lun]));
+ printk(" %2d ", id);
+ for (lun = 0; lun < 8; lun++)
+ printk("%2s ", ti_l(get_ldn(host_index)[id][lun]));
+ printk("\n");
+ }
+#endif
+
+ /* assign total number of found SCSI-devices to the statistics struct */
+ IBM_DS(host_index).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(host_index).dyn_flag = 1; /* dynamical assignment is necessary */
+ else
+ IBM_DS(host_index).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(host_index).scbs = 0;
+ IBM_DS(host_index).long_scbs = 0;
+ IBM_DS(host_index).total_accesses = 0;
+ IBM_DS(host_index).total_interrupts = 0;
+ IBM_DS(host_index).dynamical_assignments = 0;
+ memset(IBM_DS(host_index).ldn_access, 0x0, sizeof(IBM_DS(host_index).ldn_access));
+ memset(IBM_DS(host_index).ldn_read_access, 0x0, sizeof(IBM_DS(host_index).ldn_read_access));
+ memset(IBM_DS(host_index).ldn_write_access, 0x0, sizeof(IBM_DS(host_index).ldn_write_access));
+ memset(IBM_DS(host_index).ldn_inquiry_access, 0x0, sizeof(IBM_DS(host_index).ldn_inquiry_access));
+ memset(IBM_DS(host_index).ldn_modeselect_access, 0x0, sizeof(IBM_DS(host_index).ldn_modeselect_access));
+ memset(IBM_DS(host_index).ldn_assignments, 0x0, sizeof(IBM_DS(host_index).ldn_assignments));
+ probe_display(0);
+ return;
+}
+
+static int device_exists(int host_index, int ldn, int *block_length, int *device_type)
+{
+ unsigned char *buf;
+ /* if no valid device found, return immediately with 0 */
+ if (!(device_inquiry(host_index, ldn)))
+ return 0;
+ buf = (unsigned char *) (&(ld(host_index)[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(host_index, 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(host_index, 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;
+}
+
+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 < (sizeof(subsys_list) / sizeof(struct subsys_list_struct)))) {
+ /* 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;
+}
+
+int ibmmca_detect(Scsi_Host_Template * scsi_template)
+{
+ struct Scsi_Host *shpnt;
+ int port, id, i, j, k, list_size, slot;
+ int devices_on_irq_11 = 0;
+ int devices_on_irq_14 = 0;
+ int IRQ14_registered = 0;
+ int IRQ11_registered = 0;
+
+ found = 0; /* make absolutely sure, that found is set to 0 */
+
+ /* 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);
+ /* if this is not MCA machine, return "nothing found" */
+ if (!MCA_bus) {
+ printk(KERN_INFO "IBM MCA SCSI: No Microchannel-bus present --> Aborting.\n" " This machine does not have any IBM MCA-bus\n" " or the MCA-Kernel-support is not enabled!\n");
+ return 0;
+ }
+
+#ifdef MODULE
+ /* If the driver is run as module, read from conf.modules or cmd-line */
+ if (boot_options)
+ option_setup(boot_options);
+#endif
+
+ /* get interrupt request level */
+ if (request_irq(IM_IRQ, interrupt_handler, SA_SHIRQ, "ibmmcascsi", hosts)) {
+ printk(KERN_ERR "IBM MCA SCSI: Unable to get shared IRQ %d.\n", IM_IRQ);
+ return 0;
+ } else
+ IRQ14_registered++;
+
+ /* if ibmmcascsi setup option was passed to kernel, return "found" */
+ for (i = 0; i < IM_MAX_HOSTS; i++)
+ if (io_port[i] > 0 && scsi_id[i] >= 0 && scsi_id[i] < 8) {
+ printk("IBM MCA SCSI: forced detected SCSI Adapter, io=0x%x, scsi id=%d.\n", io_port[i], scsi_id[i]);
+ if ((shpnt = ibmmca_register(scsi_template, io_port[i], scsi_id[i], FORCED_DETECTION, "forced detected SCSI Adapter"))) {
+ for (k = 2; k < 7; k++)
+ ((struct ibmmca_hostdata *) shpnt->hostdata)->_pos[k] = 0;
+ ((struct ibmmca_hostdata *) shpnt->hostdata)->_special = FORCED_DETECTION;
+ mca_set_adapter_name(MCA_INTEGSCSI, "forced detected SCSI Adapter");
+ mca_set_adapter_procfn(MCA_INTEGSCSI, (MCA_ProcFn) ibmmca_getinfo, shpnt);
+ mca_mark_as_used(MCA_INTEGSCSI);
+ devices_on_irq_14++;
+ }
+ }
+ if (found)
+ return found;
+
+ /* 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_read_stored_pos(MCA_INTEGSCSI, j);
+ /* 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 ((!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)) {
+ if ((pos[2] & 1) == 1) /* is the subsystem chip enabled ? */
+ port = IM_IO_PORT;
+ else { /* if disabled, no IRQs will be generated, as the chip won't
+ * listen to the incoming commands and will do really nothing,
+ * except for listening to the pos-register settings. If this
+ * happens, I need to hugely think about it, as one has to
+ * write something to the MCA-Bus pos register in order to
+ * enable the chip. Normally, IBM-SCSI won't pass the POST,
+ * when the chip is disabled (see IBM tech. ref.). */
+ port = IM_IO_PORT; /* anyway, set the portnumber and warn */
+ printk("IBM MCA SCSI: WARNING - Your SCSI-subsystem is disabled!\n" " SCSI-operations may not work.\n");
+ }
+ id = (pos[3] & 0xe0) >> 5; /* this is correct and represents the PUN */
+ /* give detailed information on the subsystem. This helps me
+ * additionally during debugging and analyzing bug-reports. */
+ printk(KERN_INFO "IBM MCA SCSI: IBM Integrated SCSI Controller ffound, io=0x%x, scsi id=%d,\n", port, id);
+ 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.");
+
+ /* register the found integrated SCSI-subsystem */
+ if ((shpnt = ibmmca_register(scsi_template, port, id, INTEGRATED_SCSI, "IBM Integrated SCSI Controller")))
+ {
+ for (k = 2; k < 7; k++)
+ ((struct ibmmca_hostdata *) shpnt->hostdata)->_pos[k] = pos[k];
+ ((struct ibmmca_hostdata *) shpnt->hostdata)->_special = INTEGRATED_SCSI;
+ mca_set_adapter_name(MCA_INTEGSCSI, "IBM Integrated SCSI Controller");
+ mca_set_adapter_procfn(MCA_INTEGSCSI, (MCA_ProcFn) ibmmca_getinfo, shpnt);
+ mca_mark_as_used(MCA_INTEGSCSI);
+ devices_on_irq_14++;
+ }
+ }
+
+ /* now look for other adapters in MCA slots, */
+ /* determine the number of known IBM-SCSI-subsystem types */
+ /* see the pos[2] dependence to get the adapter port-offset. */
+ list_size = sizeof(subsys_list) / sizeof(struct subsys_list_struct);
+ for (i = 0; i < list_size; i++) {
+ /* scan each slot for a fitting adapter id */
+ slot = 0; /* start at slot 0 */
+ while ((slot = mca_find_adapter(subsys_list[i].mca_id, slot))
+ != MCA_NOTFOUND) { /* scan through all slots */
+ for (j = 0; j < 8; j++) /* read the pos-information */
+ pos[j] = mca_read_stored_pos(slot, j);
+ if ((pos[2] & 1) == 1)
+ /* is the subsystem chip enabled ? */
+ /* (explanations see above) */
+ port = IM_IO_PORT + ((pos[2] & 0x0e) << 2);
+ else {
+ /* anyway, set the portnumber and warn */
+ port = IM_IO_PORT + ((pos[2] & 0x0e) << 2);
+ printk(KERN_WARNING "IBM MCA SCSI: WARNING - Your SCSI-subsystem is disabled!\n");
+ printk(KERN_WARNING " SCSI-operations may not work.\n");
+ }
+ if ((i == 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 (i == IBM_SCSI2_FW) {
+ id |= (pos[3] & 0x10) >> 1; /* get subsystem PUN high-bit
+ * for F/W adapters */
+ }
+ }
+ if ((i == 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");
+ /* get interrupt request level */
+ if (request_irq(IM_IRQ_FW, interrupt_handler, SA_SHIRQ, "ibmmcascsi", hosts)) {
+ printk(KERN_ERR "IBM MCA SCSI: Unable to get shared IRQ %d.\n", IM_IRQ_FW);
+ } else
+ IRQ11_registered++;
+ }
+ printk(KERN_INFO "IBM MCA SCSI: %s found in slot %d, io=0x%x, scsi id=%d,\n", subsys_list[i].description, slot + 1, port, id);
+ 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.");
+
+ /* register the hostadapter */
+ if ((shpnt = ibmmca_register(scsi_template, port, id, i, subsys_list[i].description))) {
+ for (k = 2; k < 8; k++)
+ ((struct ibmmca_hostdata *) shpnt->hostdata)->_pos[k] = pos[k];
+ ((struct ibmmca_hostdata *) shpnt->hostdata)->_special = i;
+ mca_set_adapter_name(slot, subsys_list[i].description);
+ mca_set_adapter_procfn(slot, (MCA_ProcFn) ibmmca_getinfo, shpnt);
+ mca_mark_as_used(slot);
+ if ((i == IBM_SCSI2_FW) && (pos[4] & 0x01) && (pos[6] == 0))
+ devices_on_irq_11++;
+ else
+ devices_on_irq_14++;
+ }
+ slot++; /* advance to next slot */
+ } /* advance to next adapter id in the list of IBM-SCSI-subsystems */
+ }
+
+ /* now check for SCSI-adapters, mapped to the integrated SCSI
+ * area. E.g. a W/Cache in MCA-slot 9(!). Do the check correct here,
+ * as this is a known effect on some models 95xx. */
+ list_size = sizeof(subsys_list) / sizeof(struct subsys_list_struct);
+ for (i = 0; i < list_size; i++) {
+ /* scan each slot for a fitting adapter id */
+ slot = mca_find_adapter(subsys_list[i].mca_id, MCA_INTEGSCSI);
+ if (slot != MCA_NOTFOUND) { /* scan through all slots */
+ for (j = 0; j < 8; j++) /* read the pos-information */
+ pos[j] = mca_read_stored_pos(slot, j);
+ if ((pos[2] & 1) == 1) { /* is the subsystem chip enabled ? */
+ /* (explanations see above) */
+ port = IM_IO_PORT + ((pos[2] & 0x0e) << 2);
+ } else { /* anyway, set the portnumber and warn */
+ port = IM_IO_PORT + ((pos[2] & 0x0e) << 2);
+ printk(KERN_WARNING "IBM MCA SCSI: WARNING - Your SCSI-subsystem is disabled!\n");
+ printk(KERN_WARNING " SCSI-operations may not work.\n");
+ }
+ if ((i == 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 (i == IBM_SCSI2_FW)
+ id |= (pos[3] & 0x10) >> 1; /* get subsystem PUN high-bit
+ * for F/W adapters */
+ }
+ if ((i == 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");
+ /* get interrupt request level */
+ if (request_irq(IM_IRQ_FW, interrupt_handler, SA_SHIRQ, "ibmmcascsi", hosts))
+ printk(KERN_ERR "IBM MCA SCSI: Unable to get shared IRQ %d.\n", IM_IRQ_FW);
+ else
+ IRQ11_registered++;
+ }
+ printk(KERN_INFO "IBM MCA SCSI: %s found in slot %d, io=0x%x, scsi id=%d,\n", subsys_list[i].description, slot + 1, port, id);
+ 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.");
+
+ /* register the hostadapter */
+ if ((shpnt = ibmmca_register(scsi_template, port, id, i, subsys_list[i].description))) {
+ for (k = 2; k < 7; k++)
+ ((struct ibmmca_hostdata *) shpnt->hostdata)->_pos[k] = pos[k];
+ ((struct ibmmca_hostdata *) shpnt->hostdata)->_special = i;
+ mca_set_adapter_name(slot, subsys_list[i].description);
+ mca_set_adapter_procfn(slot, (MCA_ProcFn) ibmmca_getinfo, shpnt);
+ mca_mark_as_used(slot);
+ if ((i == IBM_SCSI2_FW) && (pos[4] & 0x01) && (pos[6] == 0))
+ devices_on_irq_11++;
+ else
+ devices_on_irq_14++;
+ }
+ slot++; /* advance to next slot */
+ } /* advance to next adapter id in the list of IBM-SCSI-subsystems */
+ }
+ if (IRQ11_registered && !devices_on_irq_11)
+ free_irq(IM_IRQ_FW, hosts); /* no devices on IRQ 11 */
+ if (IRQ14_registered && !devices_on_irq_14)
+ free_irq(IM_IRQ, hosts); /* no devices on IRQ 14 */
+ if (!devices_on_irq_11 && !devices_on_irq_14)
+ printk(KERN_WARNING "IBM MCA SCSI: No IBM SCSI-subsystem adapter attached.\n");
+ return found; /* return the number of found SCSI hosts. Should be 1 or 0. */
+}
+
+static struct Scsi_Host *ibmmca_register(Scsi_Host_Template * scsi_template, int port, int id, int adaptertype, char *hostname)
+{
+ struct Scsi_Host *shpnt;
+ int i, j;
+ unsigned int ctrl;
+
+ /* check I/O region */
+ if (!request_region(port, IM_N_IO_PORT, hostname)) {
+ 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);
+ return NULL;
+ }
+
+ /* register host */
+ shpnt = scsi_register(scsi_template, sizeof(struct ibmmca_hostdata));
+ if (!shpnt) {
+ printk(KERN_ERR "IBM MCA SCSI: Unable to register host.\n");
+ release_region(port, IM_N_IO_PORT);
+ return NULL;
+ }
+
+ /* request I/O region */
+ hosts[found] = shpnt; /* add new found hostadapter to the list */
+ special(found) = adaptertype; /* important assignment or else crash! */
+ subsystem_connector_size(found) = 0; /* preset slot-size */
+ shpnt->irq = IM_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 */
+
+ ctrl = (unsigned int) (inb(IM_CTR_REG(found))); /* get control-register status */
+#ifdef IM_DEBUG_PROBE
+ 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(found) = IM_RESET_NOT_IN_PROGRESS;
+
+ for (i = 0; i < 16; i++) /* reset the tables */
+ for (j = 0; j < 8; j++)
+ get_ldn(found)[i][j] = MAX_LOG_DEV;
+
+ /* check which logical devices exist */
+ /* after this line, local interrupting is possible: */
+ local_checking_phase_flag(found) = 1;
+ check_devices(found, adaptertype); /* call by value, using the global variable hosts */
+ local_checking_phase_flag(found) = 0;
+ found++; /* now increase index to be prepared for next found subsystem */
+ /* an ibm mca subsystem has been detected */
+ return shpnt;
+}
+
+static int ibmmca_release(struct Scsi_Host *shpnt)
+{
+ release_region(shpnt->io_port, shpnt->n_io_port);
+ if (!(--found))
+ free_irq(shpnt->irq, hosts);
+ return 0;
+}
+
+/* The following routine is the SCSI command queue for the midlevel driver */
+static int ibmmca_queuecommand(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 host_index;
+ int max_pun;
+ int i;
+ struct scatterlist *sl;
+
+ shpnt = cmd->device->host;
+ /* search for the right hostadapter */
+ for (host_index = 0; hosts[host_index] && hosts[host_index]->host_no != shpnt->host_no; host_index++);
+
+ if (!hosts[host_index]) { /* invalid hostadapter descriptor address */
+ cmd->result = DID_NO_CONNECT << 16;
+ if (done)
+ done(cmd);
+ return 0;
+ }
+ max_pun = subsystem_maxid(host_index);
+ if (ibm_ansi_order) {
+ target = max_pun - 1 - cmd->device->id;
+ if ((target <= subsystem_pun(host_index)) && (cmd->device->id <= subsystem_pun(host_index)))
+ target--;
+ else if ((target >= subsystem_pun(host_index)) && (cmd->device->id >= subsystem_pun(host_index)))
+ target++;
+ } else
+ target = cmd->device->id;
+
+ /* if (target,lun) is NO LUN or not existing at all, return error */
+ if ((get_scsi(host_index)[target][cmd->device->lun] == TYPE_NO_LUN) || (get_scsi(host_index)[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(host_index)[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(host_index); /* stop-value for one circle */
+ while (ld(host_index)[next_ldn(host_index)].cmd) { /* search for a occupied, but not in */
+ /* command-processing ldn. */
+ next_ldn(host_index)++;
+ if (next_ldn(host_index) >= MAX_LOG_DEV)
+ next_ldn(host_index) = 7;
+ if (current_ldn == next_ldn(host_index)) { /* One circle done ? */
+ /* no non-processing ldn found */
+ printk("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 (%d,%d).\n", target, cmd->device->lun);
+ 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(host_index)[id][lun] == next_ldn(host_index)) {
+ get_ldn(host_index)[id][lun] = TYPE_NO_DEVICE;
+ get_scsi(host_index)[id][lun] = TYPE_NO_DEVICE;
+ /* unmap entry */
+ }
+ }
+ /* set reduced interrupt_handler-mode for checking */
+ local_checking_phase_flag(host_index) = 1;
+ /* map found ldn to pun,lun */
+ get_ldn(host_index)[target][cmd->device->lun] = next_ldn(host_index);
+ /* change ldn to the right value, that is now next_ldn */
+ ldn = next_ldn(host_index);
+ /* unassign all ldns (pun,lun,ldn does not matter for remove) */
+ immediate_assign(host_index, 0, 0, 0, REMOVE_LDN);
+ /* set only LDN for remapped device */
+ immediate_assign(host_index, target, cmd->device->lun, ldn, SET_LDN);
+ /* get device information for ld[ldn] */
+ if (device_exists(host_index, ldn, &ld(host_index)[ldn].block_length, &ld(host_index)[ldn].device_type)) {
+ ld(host_index)[ldn].cmd = NULL; /* To prevent panic set 0, because
+ devices that were not assigned,
+ should have nothing in progress. */
+ get_scsi(host_index)[target][cmd->device->lun] = ld(host_index)[ldn].device_type;
+ /* increase assignment counters for statistics in /proc */
+ IBM_DS(host_index).dynamical_assignments++;
+ IBM_DS(host_index).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(host_index, 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(host_index)[id][lun] <= MAX_LOG_DEV)
+ immediate_assign(host_index, id, lun, get_ldn(host_index)[id][lun], SET_LDN);
+ }
+ /* set back to normal interrupt_handling */
+ local_checking_phase_flag(host_index) = 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(host_index)++;
+ if (next_ldn(host_index) >= MAX_LOG_DEV)
+ next_ldn(host_index) = 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(host_index)[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(host_index)[ldn].cmd = cmd;
+
+ /*fill scb information independent of the scsi command */
+ scb = &(ld(host_index)[ldn].scb);
+ ld(host_index)[ldn].tsb.dev_status = 0;
+ scb->enable = IM_REPORT_TSB_ONLY_ON_ERROR | IM_RETRY_ENABLE;
+ scb->tsb_adr = isa_virt_to_bus(&(ld(host_index)[ldn].tsb));
+ scsi_cmd = cmd->cmnd[0];
+
+ if (cmd->use_sg) {
+ i = cmd->use_sg;
+ sl = (struct scatterlist *) (cmd->request_buffer);
+ if (i > 16)
+ panic("IBM MCA SCSI: scatter-gather list too long.\n");
+ while (--i >= 0) {
+ ld(host_index)[ldn].sge[i].address = (void *) (isa_page_to_bus(sl[i].page) + sl[i].offset);
+ ld(host_index)[ldn].sge[i].byte_length = sl[i].length;
+ }
+ scb->enable |= IM_POINTER_TO_LIST;
+ scb->sys_buf_adr = isa_virt_to_bus(&(ld(host_index)[ldn].sge[0]));
+ scb->sys_buf_length = cmd->use_sg * sizeof(struct im_sge);
+ } else {
+ scb->sys_buf_adr = isa_virt_to_bus(cmd->request_buffer);
+ /* 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 (cmd->request_bufflen > 255)
+ scb->sys_buf_length = 255;
+ else
+ scb->sys_buf_length = cmd->request_bufflen;
+ break;
+ case TEST_UNIT_READY:
+ scb->sys_buf_length = 0;
+ break;
+ default:
+ scb->sys_buf_length = cmd->request_bufflen;
+ 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(host_index)[ldn].device_type == IM_DEBUG_CMD_DEVICE)
+ printk("(SCSI-device-type=0x%x) issue scsi cmd=%02x to ldn=%d\n", ld(host_index)[ldn].device_type, scsi_cmd, ldn);
+#endif
+
+ /* for possible panics store current command */
+ last_scsi_command(host_index)[ldn] = scsi_cmd;
+ last_scsi_type(host_index)[ldn] = IM_SCB;
+ /* update statistical info */
+ IBM_DS(host_index).total_accesses++;
+ IBM_DS(host_index).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(host_index)[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(host_index).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(host_index).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(host_index)[ldn] = scb->u1.log_blk_adr;
+ last_scsi_blockcount(host_index)[ldn] = scb->u2.blk.count;
+ scb->u2.blk.length = ld(host_index)[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(host_index)[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(host_index).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(host_index)[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(host_index).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(host_index)[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(host_index)[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(host_index)[ldn] == IM_LONG_SCB) {
+ issue_cmd(host_index, isa_virt_to_bus(scb), IM_LONG_SCB | ldn);
+ IBM_DS(host_index).long_scbs++;
+ } else {
+ issue_cmd(host_index, isa_virt_to_bus(scb), IM_SCB | ldn);
+ IBM_DS(host_index).scbs++;
+ }
+ return 0;
+}
+
+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 host_index;
+ int max_pun;
+ unsigned long imm_command;
+
+#ifdef IM_DEBUG_PROBE
+ printk("IBM MCA SCSI: Abort subroutine called...\n");
+#endif
+
+ shpnt = cmd->device->host;
+ /* search for the right hostadapter */
+ for (host_index = 0; hosts[host_index] && hosts[host_index]->host_no != shpnt->host_no; host_index++);
+
+ if (!hosts[host_index]) { /* invalid hostadapter descriptor address */
+ cmd->result = DID_NO_CONNECT << 16;
+ if (cmd->scsi_done)
+ (cmd->scsi_done) (cmd);
+ shpnt = cmd->device->host;
+#ifdef IM_DEBUG_PROBE
+ printk(KERN_DEBUG "IBM MCA SCSI: Abort adapter selection failed!\n");
+#endif
+ return SUCCESS;
+ }
+ max_pun = subsystem_maxid(host_index);
+ if (ibm_ansi_order) {
+ target = max_pun - 1 - cmd->device->id;
+ if ((target <= subsystem_pun(host_index)) && (cmd->device->id <= subsystem_pun(host_index)))
+ target--;
+ else if ((target >= subsystem_pun(host_index)) && (cmd->device->id >= subsystem_pun(host_index)))
+ 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(host_index)[target][cmd->device->lun];
+
+ /*if cmd for this ldn has already finished, no need to abort */
+ if (!ld(host_index)[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(host_index)[ldn] = IM_ABORT_IMM_CMD;
+ last_scsi_type(host_index)[ldn] = IM_IMM_CMD;
+ imm_command = inl(IM_CMD_REG(host_index));
+ 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(host_index)) & IM_BUSY))
+ break;
+ }
+ /* write registers and enable system interrupts */
+ outl(imm_command, IM_CMD_REG(host_index));
+ outb(IM_IMM_CMD | ldn, IM_ATTN_REG(host_index));
+#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(host_index)[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(host_index)[ldn].cmd = NULL;
+#ifdef IM_DEBUG_PROBE
+ printk("IBM MCA SCSI: Abort failed.\n");
+#endif
+ return FAILED;
+ }
+}
+
+static int ibmmca_host_reset(Scsi_Cmnd * cmd)
+{
+ struct Scsi_Host *shpnt;
+ Scsi_Cmnd *cmd_aid;
+ int ticks, i;
+ int host_index;
+ unsigned long imm_command;
+
+ if (cmd == NULL)
+ BUG();
+
+ ticks = IM_RESET_DELAY * HZ;
+ shpnt = cmd->device->host;
+ /* search for the right hostadapter */
+ for (host_index = 0; hosts[host_index] && hosts[host_index]->host_no != shpnt->host_no; host_index++);
+
+ if (!hosts[host_index]) /* invalid hostadapter descriptor address */
+ return FAILED;
+
+ if (local_checking_phase_flag(host_index)) {
+ 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(host_index) = IM_RESET_IN_PROGRESS;
+ last_scsi_command(host_index)[0xf] = IM_RESET_IMM_CMD;
+ last_scsi_type(host_index)[0xf] = IM_IMM_CMD;
+ imm_command = inl(IM_CMD_REG(host_index));
+ 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(host_index)) & 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(host_index));
+ outb(IM_IMM_CMD | 0xf, IM_ATTN_REG(host_index));
+ /* 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(host_index) == IM_RESET_IN_PROGRESS && --ticks && ((inb(IM_INTR_REG(host_index)) & 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(host_index) = IM_RESET_FINISHED_FAIL;
+ return FAILED;
+ }
+
+ if ((inb(IM_INTR_REG(host_index)) & 0x8f) == 0x8f) {
+ /* analysis done by this routine and not by the intr-routine */
+ if (inb(IM_INTR_REG(host_index)) == 0xaf)
+ reset_status(host_index) = IM_RESET_FINISHED_OK_NO_INT;
+ else if (inb(IM_INTR_REG(host_index)) == 0xcf)
+ reset_status(host_index) = IM_RESET_FINISHED_FAIL;
+ else /* failed, 4get it */
+ reset_status(host_index) = IM_RESET_NOT_IN_PROGRESS_NO_INT;
+ outb(IM_EOI | 0xf, IM_ATTN_REG(host_index));
+ }
+
+ /* if reset failed, just return an error */
+ if (reset_status(host_index) == 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(host_index)[i].cmd;
+ if (cmd_aid && cmd_aid->scsi_done) {
+ ld(host_index)[i].cmd = NULL;
+ cmd_aid->result = DID_RESET << 16;
+ }
+ }
+ return SUCCESS;
+}
+
+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(int host_index, int ldn)
+{
+ if (IBM_DS(host_index).total_accesses == 0)
+ return (0);
+ if (IBM_DS(host_index).ldn_access[ldn] == 0)
+ return (0);
+ return (IBM_DS(host_index).ldn_access[ldn] * 100) / IBM_DS(host_index).total_accesses;
+}
+
+/* calculate total amount of r/w-accesses */
+static int ldn_access_total_read_write(int host_index)
+{
+ int a;
+ int i;
+
+ a = 0;
+ for (i = 0; i <= MAX_LOG_DEV; i++)
+ a += IBM_DS(host_index).ldn_read_access[i] + IBM_DS(host_index).ldn_write_access[i];
+ return (a);
+}
+
+static int ldn_access_total_inquiry(int host_index)
+{
+ int a;
+ int i;
+
+ a = 0;
+ for (i = 0; i <= MAX_LOG_DEV; i++)
+ a += IBM_DS(host_index).ldn_inquiry_access[i];
+ return (a);
+}
+
+static int ldn_access_total_modeselect(int host_index)
+{
+ int a;
+ int i;
+
+ a = 0;
+ for (i = 0; i <= MAX_LOG_DEV; i++)
+ a += IBM_DS(host_index).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, host_index;
+ unsigned long flags;
+ int max_pun;
+
+ for (i = 0; hosts[i] && hosts[i] != shpnt; i++);
+
+ spin_lock_irqsave(hosts[i]->host_lock, flags); /* Check it */
+ host_index = i;
+ if (!shpnt) {
+ len += sprintf(buffer + len, "\nIBM MCA SCSI: Can't find adapter for host number %d\n",
+ shpnt->host_no);
+ return len;
+ }
+ max_pun = subsystem_maxid(host_index);
+
+ 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(host_index)));
+ len += sprintf(buffer + len, " (Shared) IRQ.............: %d\n", IM_IRQ);
+ len += sprintf(buffer + len, " Total Interrupts.........: %d\n", IBM_DS(host_index).total_interrupts);
+ len += sprintf(buffer + len, " Total SCSI Accesses......: %d\n", IBM_DS(host_index).total_accesses);
+ len += sprintf(buffer + len, " Total short SCBs.........: %d\n", IBM_DS(host_index).scbs);
+ len += sprintf(buffer + len, " Total long SCBs..........: %d\n", IBM_DS(host_index).long_scbs);
+ len += sprintf(buffer + len, " Total SCSI READ/WRITE..: %d\n", ldn_access_total_read_write(host_index));
+ len += sprintf(buffer + len, " Total SCSI Inquiries...: %d\n", ldn_access_total_inquiry(host_index));
+ len += sprintf(buffer + len, " Total SCSI Modeselects.: %d\n", ldn_access_total_modeselect(host_index));
+ len += sprintf(buffer + len, " Total SCSI other cmds..: %d\n", IBM_DS(host_index).total_accesses - ldn_access_total_read_write(host_index)
+ - ldn_access_total_modeselect(host_index)
+ - ldn_access_total_inquiry(host_index));
+ len += sprintf(buffer + len, " Total SCSI command fails.: %d\n\n", IBM_DS(host_index).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(host_index, i), IBM_DS(host_index).ldn_read_access[i], IBM_DS(host_index).ldn_write_access[i], IBM_DS(host_index).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(host_index).total_scsi_devices);
+ len += sprintf(buffer + len, " Dynamical Assignment necessary...: %s\n", IBM_DS(host_index).dyn_flag ? "Yes" : "No ");
+ len += sprintf(buffer + len, " Next LDN to be assigned..........: 0x%x\n", next_ldn(host_index));
+ len += sprintf(buffer + len, " Dynamical assignments done yet...: %d\n", IBM_DS(host_index).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(host_index)[id][lun]));
+ len += sprintf(buffer + len, " %2d ", id);
+ for (lun = 0; lun < 8; lun++)
+ len += sprintf(buffer + len, "%2s ", ti_l(get_ldn(host_index)[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 0;
+}
+
+__setup("ibmmcascsi=", option_setup);
+
+static Scsi_Host_Template driver_template = {
+ .proc_name = "ibmmca",
+ .proc_info = ibmmca_proc_info,
+ .name = "IBM SCSI-Subsystem",
+ .detect = ibmmca_detect,
+ .release = ibmmca_release,
+ .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,
+};
+#include "scsi_module.c"
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-21 05:20:32 +0000