/*
* NinjaSCSI-32Bi Cardbus, NinjaSCSI-32UDE PCI/CardBus SCSI driver
- * Copyright (C) 2001, 2002
+ * Copyright (C) 2001, 2002, 2003
* YOKOTA Hiroshi <yokota@netlab.is.tsukuba.ac.jp>
- * GOTO Masanori <gotom@debian.or.jp>
+ * GOTO Masanori <gotom@debian.or.jp>, <gotom@debian.org>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
+ *
+ *
+ * Revision History:
+ * 1.0: Initial Release.
+ * 1.1: Add /proc SDTR status.
+ * Remove obsolete error handler nsp32_reset.
+ * Some clean up.
+ * 1.2: PowerPC (big endian) support.
*/
#include <linux/version.h>
#include <linux/pci.h>
#include <linux/delay.h>
#include <linux/ctype.h>
+#include <linux/interrupt.h>
#include <asm/dma.h>
#include <asm/system.h>
#include <scsi/scsi_ioctl.h>
#include <scsi/scsi.h>
+#if (LINUX_VERSION_CODE < KERNEL_VERSION(2,6,0))
+# include <linux/blk.h>
+#endif
+
#include "nsp32.h"
-static int trans_mode = 0; /* default: BIOS */
-static int auto_param = 0; /* default: ON */
-MODULE_PARM(trans_mode, "i");
-MODULE_PARM(auto_param, "i");
-MODULE_PARM_DESC(trans_mode, "transfer mode (0: BIOS 1: Async 2: Ultra20M");
-MODULE_PARM_DESC(auto_param, "AutoParameter mode (0: ON 1: OFF)");
+/***********************************************************************
+ * Module parameters
+ */
+static int trans_mode = 0; /* default: BIOS */
+MODULE_PARM (trans_mode, "i");
+MODULE_PARM_DESC(trans_mode, "transfer mode (0: BIOS(default) 1: Async 2: Ultra20M");
#define ASYNC_MODE 1
#define ULTRA20M_MODE 2
-MODULE_AUTHOR("YOKOTA Hiroshi <yokota@netlab.is.tsukuba.ac.jp>, GOTO Masanori <gotom@debian.or.jp>");
-MODULE_DESCRIPTION("Workbit NinjaSCSI-32Bi/UDE PCI/CardBus SCSI host bus adapter module");
-MODULE_LICENSE("GPL");
-
-static const char *nsp32_release_version = "1.0";
-
-
-/*
- * structure for DMA/Scatter Gather list
- */
-#define AUTOPARAM_SIZE (sizeof(int)*0x15) /* 4x15H = 0x60 */
-#define NSP_SG_SIZE SG_ALL
-#define NSP32_SG_END_SGT 0x80000000 /* Last SGT marker */
-#define NSP32_SG_CNT_MASK 0x1FFFF
-
-struct nsp32_sgtable {
- unsigned long addr; /* transfer address */
- unsigned long len; /* transfer length.
- Bit (24-32) is for SGT_END */
-};
-
-struct nsp32_sglun {
- struct nsp32_sgtable sgt[NSP_SG_SIZE+1]; /* SG table */
-};
-
-
-/*
- * host data structure
- */
-/* message in/out buffer */
-#define MSGOUTBUF_MAX 13 /* 13 is ok ? */
-#define MSGINBUF_MAX 13
-
-/* flag for trans_method */
-#define NSP32_TRANSFER_BUSMASTER BIT(0)
-#define NSP32_TRANSFER_MMIO BIT(1) /* Not supported yet */
-#define NSP32_TRANSFER_PIO BIT(2) /* Not supported yet */
-
+static int auto_param = 0; /* default: ON */
+MODULE_PARM (auto_param, "i");
+MODULE_PARM_DESC(auto_param, "AutoParameter mode (0: ON(default) 1: OFF)");
-/*
- * SCSI TARGET/LUN definition
- */
-#define NSP32_HOST_SCSIID 7 /* SCSI initiator is everytime defined as 7 */
-#define MAX_TARGET 8
-#define MAX_LUN 8 /* XXX: In SPI3, max number of LUN is 64. */
+static int disc_priv = 1; /* default: OFF */
+MODULE_PARM (disc_priv, "i");
+MODULE_PARM_DESC(disc_priv, "disconnection privilege mode (0: ON 1: OFF(default))");
+MODULE_AUTHOR("YOKOTA Hiroshi <yokota@netlab.is.tsukuba.ac.jp>, GOTO Masanori <gotom@debian.or.jp>");
+MODULE_DESCRIPTION("Workbit NinjaSCSI-32Bi/UDE CardBus/PCI SCSI host bus adapter module");
+MODULE_LICENSE("GPL");
-/*
- * structure for synchronous transfer negotiation data
- */
-#define SYNC_NOT_YET 0
-#define SYNC_OK 1
-#define SYNC_NG 2
-
-struct nsp32_sync_table {
- unsigned char period_num; /* period number */
- unsigned char ackwidth; /* ack width designated by period */
- unsigned char start_period; /* search range - start period */
- unsigned char end_period; /* search range - end period */
-};
+static const char *nsp32_release_version = "1.2";
-/*
- * structure for target device static data
+/****************************************************************************
+ * Supported hardware
*/
-/* flag for nsp32_target.sync_flag */
-#define SDTR_INITIATOR BIT(0) /* sending SDTR from initiator */
-#define SDTR_TARGET BIT(1) /* sending SDTR from target */
-#define SDTR_DONE BIT(2) /* exchanging SDTR has been processed */
-
-/* syncronous period value for nsp32_target.config_max */
-#define FAST5M 0x32
-#define FAST10M 0x19
-#define ULTRA20M 0x0c
-
-/* flag for nsp32_target.{sync_offset}, period */
-#define ASYNC_OFFSET 0 /* asynchronous transfer */
-#define SYNC_OFFSET 0xf /* synchronous transfer max offset */
-
-/* syncreg:
- 07 06 05 04 03 02 01 00
- ---PERIOD-- ---OFFSET-- */
-#define TO_SYNCREG(period, offset) (period << 4 | offset)
-
-struct nsp32_target {
- unsigned char syncreg; /* value for SYNCREG */
- unsigned char ackwidth; /* value for ACKWIDTH */
- unsigned char offset; /* sync offset (0-15) */
- int sync_flag; /* SDTR_*, 0 */
- int limit_entry; /* max speed limit entry designated
- by EEPROM configuration */
+static struct pci_device_id nsp32_pci_table[] __devinitdata = {
+ {
+ .vendor = PCI_VENDOR_ID_IODATA,
+ .device = PCI_DEVICE_ID_NINJASCSI_32BI_CBSC_II,
+ .subvendor = PCI_ANY_ID,
+ .subdevice = PCI_ANY_ID,
+ .driver_data = MODEL_IODATA,
+ },
+ {
+ .vendor = PCI_VENDOR_ID_WORKBIT,
+ .device = PCI_DEVICE_ID_NINJASCSI_32BI_KME,
+ .subvendor = PCI_ANY_ID,
+ .subdevice = PCI_ANY_ID,
+ .driver_data = MODEL_KME,
+ },
+ {
+ .vendor = PCI_VENDOR_ID_WORKBIT,
+ .device = PCI_DEVICE_ID_NINJASCSI_32BI_WBT,
+ .subvendor = PCI_ANY_ID,
+ .subdevice = PCI_ANY_ID,
+ .driver_data = MODEL_WORKBIT,
+ },
+ {
+ .vendor = PCI_VENDOR_ID_WORKBIT,
+ .device = PCI_DEVICE_ID_WORKBIT_STANDARD,
+ .subvendor = PCI_ANY_ID,
+ .subdevice = PCI_ANY_ID,
+ .driver_data = MODEL_PCI_WORKBIT,
+ },
+ {
+ .vendor = PCI_VENDOR_ID_WORKBIT,
+ .device = PCI_DEVICE_ID_NINJASCSI_32BI_LOGITEC,
+ .subvendor = PCI_ANY_ID,
+ .subdevice = PCI_ANY_ID,
+ .driver_data = MODEL_LOGITEC,
+ },
+ {
+ .vendor = PCI_VENDOR_ID_WORKBIT,
+ .device = PCI_DEVICE_ID_NINJASCSI_32BIB_LOGITEC,
+ .subvendor = PCI_ANY_ID,
+ .subdevice = PCI_ANY_ID,
+ .driver_data = MODEL_PCI_LOGITEC,
+ },
+ {
+ .vendor = PCI_VENDOR_ID_WORKBIT,
+ .device = PCI_DEVICE_ID_NINJASCSI_32UDE_MELCO,
+ .subvendor = PCI_ANY_ID,
+ .subdevice = PCI_ANY_ID,
+ .driver_data = MODEL_PCI_MELCO,
+ },
+ {
+ .vendor = PCI_VENDOR_ID_WORKBIT,
+ .device = PCI_DEVICE_ID_NINJASCSI_32UDE_MELCO_II,
+ .subvendor = PCI_ANY_ID,
+ .subdevice = PCI_ANY_ID,
+ .driver_data = MODEL_PCI_MELCO,
+ },
+ {0,0,},
};
+MODULE_DEVICE_TABLE(pci, nsp32_pci_table);
-typedef struct _nsp32_hw_data {
- int IrqNumber;
- int BaseAddress;
- int NumAddress;
-#define NSP32_MMIO_OFFSET 0x0800
- unsigned long MmioAddress;
- unsigned long length;
-
- Scsi_Cmnd *CurrentSC;
-
- struct pci_dev *Pci;
- const struct pci_device_id *pci_devid;
- struct Scsi_Host *Host;
- spinlock_t Lock;
-
- char info_str[100];
-
- /* allocated memory region */
- struct nsp32_lunt *lunt_list; /* kmalloc region for lunt */
- struct nsp32_sglun *sg_list; /* sglist virtual address */
- dma_addr_t sgaddr; /* physical address of hw_sg_table */
- unsigned char *autoparam; /* auto parameter transfer region */
- dma_addr_t apaddr; /* physical address of autoparam */
- int cur_entry; /* current sgt entry */
-
- /* target/LUN */
- struct nsp32_lunt *curlunt; /* Current connected LUN table */
- struct nsp32_lunt *lunt[MAX_TARGET][MAX_LUN]; /* All LUN table */
- struct nsp32_target *curtarget; /* Current connected SCSI ID */
- struct nsp32_target target[MAX_TARGET]; /* SCSI ID */
- int pid; /* Current connected target ID */
- int plun; /* Current connected target LUN */
-
- /* behavior setting parameters */
- int trans_method; /* transfer method flag */
- int resettime; /* Reset time */
- int clock; /* clock dividing flag */
- struct nsp32_sync_table *synct; /* sync_table determined by clock */
- int syncnum; /* the max number of synct element */
-
- /* message buffer */
- unsigned char msgoutbuf[MSGOUTBUF_MAX]; /* msgout buffer */
- char msgoutlen; /* msgoutbuf length */
- unsigned char msginbuf[MSGINBUF_MAX]; /* megin buffer */
- char msginlen; /* msginbuf length */
-
-
-} nsp32_hw_data;
static nsp32_hw_data nsp32_data_base; /* probe <-> detect glue */
-/*
- * TIME definition
- */
-#define RESET_HOLD_TIME 10000 /* reset time in us (SCSI-2 says the
- minimum is 25us) */
-#define SEL_TIMEOUT_TIME 10000 /* 250ms defined in SCSI specification
- (25.6us/1unit) */
-#define ARBIT_TIMEOUT_TIME 100 /* 100us */
-#define REQSACK_TIMEOUT_TIME 10000 /* max wait time for REQ/SACK assertion
- or negation, 10000us == 10ms */
-
-/*
- * structure for connected LUN dynamic data
- *
- * Note: Currently tagged queuing is disabled, each nsp32_lunt holds
- * one SCSI command and one state.
- */
-#define DISCPRIV_OK BIT(0) /* DISCPRIV Enable mode */
-#define MSGIN03 BIT(1) /* Auto Msg In 03 Flag */
-
-struct nsp32_lunt {
- Scsi_Cmnd *SCpnt; /* Current Handling Scsi_Cmnd */
- unsigned long save_datp; /* Save Data Pointer - saved position from initial address */
- int msgin03; /* auto msg in 03 flag */
- unsigned int sg_num; /* Total number of SG entries */
- int cur_entry; /* Current SG entry number */
- struct nsp32_sglun *sglun; /* sg table per lun */
- long sglun_paddr; /* sglun physical address */
-};
-
-
/*
* Period/AckWidth speed conversion table
*
* Note: This period/ackwidth speed table must be in descending order.
*/
-static struct nsp32_sync_table nsp32_sync_table_40M[] = {
- /* {PNo, AW, SP, EP} Speed(MB/s) Period AckWidth */
- {0x1, 0, 0x0c, 0x0c}, /* 20.0 : 50ns, 25ns */
- {0x2, 0, 0x0d, 0x18}, /* 13.3 : 75ns, 25ns */
- {0x3, 1, 0x19, 0x19}, /* 10.0 : 100ns, 50ns */
- {0x4, 1, 0x1a, 0x1f}, /* 8.0 : 125ns, 50ns */
- {0x5, 2, 0x20, 0x25}, /* 6.7 : 150ns, 75ns */
- {0x6, 2, 0x26, 0x31}, /* 5.7 : 175ns, 75ns */
- {0x7, 3, 0x32, 0x32}, /* 5.0 : 200ns, 100ns */
- {0x8, 3, 0x33, 0x38}, /* 4.4 : 225ns, 100ns */
- {0x9, 3, 0x39, 0x3e}, /* 4.0 : 250ns, 100ns */
+static nsp32_sync_table nsp32_sync_table_40M[] = {
+ /* {PNo, AW, SP, EP, SREQ smpl} Speed(MB/s) Period AckWidth */
+ {0x1, 0, 0x0c, 0x0c, SMPL_40M}, /* 20.0 : 50ns, 25ns */
+ {0x2, 0, 0x0d, 0x18, SMPL_40M}, /* 13.3 : 75ns, 25ns */
+ {0x3, 1, 0x19, 0x19, SMPL_40M}, /* 10.0 : 100ns, 50ns */
+ {0x4, 1, 0x1a, 0x1f, SMPL_20M}, /* 8.0 : 125ns, 50ns */
+ {0x5, 2, 0x20, 0x25, SMPL_20M}, /* 6.7 : 150ns, 75ns */
+ {0x6, 2, 0x26, 0x31, SMPL_20M}, /* 5.7 : 175ns, 75ns */
+ {0x7, 3, 0x32, 0x32, SMPL_20M}, /* 5.0 : 200ns, 100ns */
+ {0x8, 3, 0x33, 0x38, SMPL_10M}, /* 4.4 : 225ns, 100ns */
+ {0x9, 3, 0x39, 0x3e, SMPL_10M}, /* 4.0 : 250ns, 100ns */
};
-static const int nsp32_table_40M_num =
- sizeof(nsp32_sync_table_40M)/sizeof(struct nsp32_sync_table);
-
-static struct nsp32_sync_table nsp32_sync_table_20M[] = {
- {0x1, 0, 0x19, 0x19}, /* 10.0 : 100ns, 50ns */
- {0x2, 0, 0x1a, 0x25}, /* 6.7 : 150ns, 50ns */
- {0x3, 1, 0x26, 0x32}, /* 5.0 : 200ns, 100ns */
- {0x4, 1, 0x33, 0x3e}, /* 4.0 : 250ns, 100ns */
- {0x5, 2, 0x3f, 0x4b}, /* 3.3 : 300ns, 150ns */
- {0x6, 2, 0x4c, 0x57}, /* 2.8 : 350ns, 150ns */
- {0x7, 3, 0x58, 0x64}, /* 2.5 : 400ns, 200ns */
- {0x8, 3, 0x65, 0x70}, /* 2.2 : 450ns, 200ns */
- {0x9, 3, 0x71, 0x7d}, /* 2.0 : 500ns, 200ns */
+
+static nsp32_sync_table nsp32_sync_table_20M[] = {
+ {0x1, 0, 0x19, 0x19, SMPL_40M}, /* 10.0 : 100ns, 50ns */
+ {0x2, 0, 0x1a, 0x25, SMPL_20M}, /* 6.7 : 150ns, 50ns */
+ {0x3, 1, 0x26, 0x32, SMPL_20M}, /* 5.0 : 200ns, 100ns */
+ {0x4, 1, 0x33, 0x3e, SMPL_10M}, /* 4.0 : 250ns, 100ns */
+ {0x5, 2, 0x3f, 0x4b, SMPL_10M}, /* 3.3 : 300ns, 150ns */
+ {0x6, 2, 0x4c, 0x57, SMPL_10M}, /* 2.8 : 350ns, 150ns */
+ {0x7, 3, 0x58, 0x64, SMPL_10M}, /* 2.5 : 400ns, 200ns */
+ {0x8, 3, 0x65, 0x70, SMPL_10M}, /* 2.2 : 450ns, 200ns */
+ {0x9, 3, 0x71, 0x7d, SMPL_10M}, /* 2.0 : 500ns, 200ns */
};
-static const int nsp32_table_20M_num =
- sizeof(nsp32_sync_table_20M)/sizeof(struct nsp32_sync_table);
-
-static struct nsp32_sync_table nsp32_sync_table_pci[] = {
- {0x1, 0, 0x0c, 0x0f}, /* 16.6 : 60ns, 30ns */
- {0x2, 0, 0x10, 0x16}, /* 11.1 : 90ns, 30ns */
- {0x3, 1, 0x17, 0x1e}, /* 8.3 : 120ns, 60ns */
- {0x4, 1, 0x1f, 0x25}, /* 6.7 : 150ns, 60ns */
- {0x5, 2, 0x26, 0x2d}, /* 5.6 : 180ns, 90ns */
- {0x6, 2, 0x2e, 0x34}, /* 4.8 : 210ns, 90ns */
- {0x7, 3, 0x35, 0x3c}, /* 4.2 : 240ns, 120ns */
- {0x8, 3, 0x3d, 0x43}, /* 3.7 : 270ns, 120ns */
- {0x9, 3, 0x44, 0x4b}, /* 3.3 : 300ns, 120ns */
+
+static nsp32_sync_table nsp32_sync_table_pci[] = {
+ {0x1, 0, 0x0c, 0x0f, SMPL_40M}, /* 16.6 : 60ns, 30ns */
+ {0x2, 0, 0x10, 0x16, SMPL_40M}, /* 11.1 : 90ns, 30ns */
+ {0x3, 1, 0x17, 0x1e, SMPL_20M}, /* 8.3 : 120ns, 60ns */
+ {0x4, 1, 0x1f, 0x25, SMPL_20M}, /* 6.7 : 150ns, 60ns */
+ {0x5, 2, 0x26, 0x2d, SMPL_20M}, /* 5.6 : 180ns, 90ns */
+ {0x6, 2, 0x2e, 0x34, SMPL_10M}, /* 4.8 : 210ns, 90ns */
+ {0x7, 3, 0x35, 0x3c, SMPL_10M}, /* 4.2 : 240ns, 120ns */
+ {0x8, 3, 0x3d, 0x43, SMPL_10M}, /* 3.7 : 270ns, 120ns */
+ {0x9, 3, 0x44, 0x4b, SMPL_10M}, /* 3.3 : 300ns, 120ns */
};
-static const int nsp32_table_pci_num =
- sizeof(nsp32_sync_table_pci)/sizeof(struct nsp32_sync_table);
/*
* function declaration
*/
-static int nsp32_queuecommand(Scsi_Cmnd *, void (*done)(Scsi_Cmnd *));
-static const char *nsp32_info(struct Scsi_Host *);
-static int nsp32_eh_abort(Scsi_Cmnd *);
-static int nsp32_eh_bus_reset(Scsi_Cmnd *);
-static int nsp32_eh_host_reset(Scsi_Cmnd *);
-static int nsp32_proc_info(struct Scsi_Host *, char *, char **, off_t, int, int);
-static int __devinit nsp32_probe(struct pci_dev *, const struct pci_device_id *);
+/* module entry point */
+static int __devinit nsp32_probe (struct pci_dev *, const struct pci_device_id *);
static void __devexit nsp32_remove(struct pci_dev *);
-static int __init init_nsp32(void);
-static void __exit exit_nsp32(void);
-
-static void nsp32_message(const char *, int, char *, char *, ...);
-static void nsp32_dmessage(const char *, int, int, char *, ...);
-static void nsp32_build_identify(nsp32_hw_data *, Scsi_Cmnd *);
-static void nsp32_build_sdtr(nsp32_hw_data *, unsigned char, unsigned char);
-static void nsp32_build_nop(nsp32_hw_data *);
-static void nsp32_build_reject(nsp32_hw_data *);
-static int nsp32hw_start_selection(Scsi_Cmnd *, nsp32_hw_data *);
-static int nsp32_selection_autoscsi(Scsi_Cmnd *, nsp32_hw_data *);
-static int nsp32_reselection(nsp32_hw_data *, unsigned char);
-static int nsp32hw_setup_sg_table(Scsi_Cmnd *, nsp32_hw_data *);
-static int nsp32hw_init(struct Scsi_Host *);
-static void nsp32_scsi_done(nsp32_hw_data *, Scsi_Cmnd *);
-static int nsp32_busfree_occur(nsp32_hw_data *, unsigned short);
-static void nsp32_adjust_busfree(nsp32_hw_data *, unsigned int);
-static void nsp32_msgout_occur(nsp32_hw_data *);
-static void nsp32_restart_autoscsi(nsp32_hw_data *, unsigned short);
-static void nsp32_msgin_occur(nsp32_hw_data *, unsigned long, unsigned short);
-static void nsp32_analyze_sdtr(nsp32_hw_data *);
-static int nsp32_search_period_entry(nsp32_hw_data *,struct nsp32_target *, unsigned char);
-static void nsp32_set_async(nsp32_hw_data *, struct nsp32_target *);
-static void nsp32_set_max_sync(nsp32_hw_data *, struct nsp32_target *, unsigned char *, unsigned char *);
-static void nsp32_set_sync_entry(nsp32_hw_data *, struct nsp32_target *, int, unsigned char);
-static void nsp32_wait_req(nsp32_hw_data *, int);
-static void nsp32_wait_sack(nsp32_hw_data *, int);
-static void nsp32_sack_assert(nsp32_hw_data *);
-static void nsp32_sack_negate(nsp32_hw_data *);
-static void nsp32_do_bus_reset(nsp32_hw_data *);
+static int __init init_nsp32 (void);
+static void __exit exit_nsp32 (void);
+
+/* struct Scsi_Host_Template */
+#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,5,73))
+static int nsp32_proc_info (struct Scsi_Host *, char *, char **, off_t, int, int);
+#else
+static int nsp32_proc_info (char *, char **, off_t, int, int, int);
+#endif
-static int nsp32_getprom_param(nsp32_hw_data *);
-static int nsp32_getprom_new(nsp32_hw_data *);
-static int nsp32_getprom_standard(nsp32_hw_data *);
-static int nsp32_prom_read(nsp32_hw_data *, int);
-static void nsp32_prom_start(nsp32_hw_data *);
-static void nsp32_prom_stop(nsp32_hw_data *);
-static void nsp32_prom_write(nsp32_hw_data *, int);
-static int nsp32_prom_fetch(nsp32_hw_data *);
-static inline void nsp32_prom_set(nsp32_hw_data *, int, int);
-static inline int nsp32_prom_get(nsp32_hw_data *, int);
+#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,5,73))
+static int nsp32_detect (struct pci_dev *pdev);
+#else
+static int nsp32_detect (Scsi_Host_Template *);
+#endif
+static int nsp32_queuecommand(Scsi_Cmnd *, void (*done)(Scsi_Cmnd *));
+static const char *nsp32_info (struct Scsi_Host *);
+static int nsp32_release (struct Scsi_Host *);
+
+/* SCSI error handler */
+static int nsp32_eh_abort (Scsi_Cmnd *);
+static int nsp32_eh_bus_reset (Scsi_Cmnd *);
+static int nsp32_eh_host_reset(Scsi_Cmnd *);
+
+/* generate SCSI message */
+static void nsp32_build_identify(Scsi_Cmnd *);
+static void nsp32_build_nop (Scsi_Cmnd *);
+static void nsp32_build_reject (Scsi_Cmnd *);
+static void nsp32_build_sdtr (Scsi_Cmnd *, unsigned char, unsigned char);
+
+/* SCSI message handler */
+static int nsp32_busfree_occur(Scsi_Cmnd *, unsigned short);
+static void nsp32_msgout_occur (Scsi_Cmnd *);
+static void nsp32_msgin_occur (Scsi_Cmnd *, unsigned long, unsigned short);
+
+static int nsp32_setup_sg_table (Scsi_Cmnd *);
+static int nsp32_selection_autopara(Scsi_Cmnd *);
+static int nsp32_selection_autoscsi(Scsi_Cmnd *);
+static void nsp32_scsi_done (Scsi_Cmnd *);
+static int nsp32_arbitration (Scsi_Cmnd *, unsigned int);
+static int nsp32_reselection (Scsi_Cmnd *, unsigned char);
+static void nsp32_adjust_busfree (Scsi_Cmnd *, unsigned int);
+static void nsp32_restart_autoscsi (Scsi_Cmnd *, unsigned short);
+
+/* SCSI SDTR */
+static void nsp32_analyze_sdtr (Scsi_Cmnd *);
+static int nsp32_search_period_entry(nsp32_hw_data *, nsp32_target *, unsigned char);
+static void nsp32_set_async (nsp32_hw_data *, nsp32_target *);
+static void nsp32_set_max_sync (nsp32_hw_data *, nsp32_target *, unsigned char *, unsigned char *);
+static void nsp32_set_sync_entry (nsp32_hw_data *, nsp32_target *, int, unsigned char);
+
+/* SCSI bus status handler */
+static void nsp32_wait_req (nsp32_hw_data *, int);
+static void nsp32_wait_sack (nsp32_hw_data *, int);
+static void nsp32_sack_assert (nsp32_hw_data *);
+static void nsp32_sack_negate (nsp32_hw_data *);
+static void nsp32_do_bus_reset(nsp32_hw_data *);
+/* hardware interrupt handler */
+static irqreturn_t do_nsp32_isr(int, void *, struct pt_regs *);
+
+/* initialize hardware */
+static int nsp32hw_init(nsp32_hw_data *);
+
+/* EEPROM handler */
+static int nsp32_getprom_param (nsp32_hw_data *);
+static int nsp32_getprom_at24 (nsp32_hw_data *);
+static int nsp32_getprom_c16 (nsp32_hw_data *);
+static void nsp32_prom_start (nsp32_hw_data *);
+static void nsp32_prom_stop (nsp32_hw_data *);
+static int nsp32_prom_read (nsp32_hw_data *, int);
+static int nsp32_prom_read_bit (nsp32_hw_data *);
+static void nsp32_prom_write_bit(nsp32_hw_data *, int);
+static inline void nsp32_prom_set (nsp32_hw_data *, int, int);
+static inline int nsp32_prom_get (nsp32_hw_data *, int);
+
+/* debug/warning/info message */
+static void nsp32_message (const char *, int, char *, char *, ...);
+#ifdef NSP32_DEBUG
+static void nsp32_dmessage(const char *, int, int, char *, ...);
+#endif
/*
* max_sectors is currently limited up to 128.
*/
static Scsi_Host_Template nsp32_template = {
- .name = "Workbit NinjaSCSI-32Bi/UDE",
- .proc_name = "nsp32",
- .proc_info = nsp32_proc_info,
- .info = nsp32_info,
- .queuecommand = nsp32_queuecommand,
- .can_queue = 1,
- .sg_tablesize = NSP_SG_SIZE,
- .max_sectors = 128,
- .cmd_per_lun = 1,
- .this_id = 7,
- .use_clustering = DISABLE_CLUSTERING,
- .eh_abort_handler = nsp32_eh_abort,
- .eh_device_reset_handler = NULL,
- .eh_bus_reset_handler = nsp32_eh_bus_reset,
- .eh_host_reset_handler = nsp32_eh_host_reset,
+ .proc_name = "nsp32",
+ .name = "Workbit NinjaSCSI-32Bi/UDE",
+ .proc_info = nsp32_proc_info,
+ .info = nsp32_info,
+ .queuecommand = nsp32_queuecommand,
+ .can_queue = 1,
+ .sg_tablesize = NSP32_SG_SIZE,
+ .max_sectors = 128,
+ .cmd_per_lun = 1,
+ .this_id = NSP32_HOST_SCSIID,
+ .use_clustering = DISABLE_CLUSTERING,
+ .eh_abort_handler = nsp32_eh_abort,
+/* .eh_device_reset_handler = NULL, */
+ .eh_bus_reset_handler = nsp32_eh_bus_reset,
+ .eh_host_reset_handler = nsp32_eh_host_reset,
+#if (LINUX_VERSION_CODE < KERNEL_VERSION(2,5,74))
+ .detect = nsp32_detect,
+ .release = nsp32_release,
+#endif
+#if (LINUX_VERSION_CODE < KERNEL_VERSION(2,5,2))
+ .use_new_eh_code = 1,
+#else
+/* .highmem_io = 1, */
+#endif
};
#include "nsp32_io.h"
-/*
+/***********************************************************************
* debug, error print
*/
-#define nsp32_msg(type, args...) \
- nsp32_message(__FUNCTION__, __LINE__, (type), ## args)
-#define nsp32_dbg(mask, args...) \
- nsp32_dmessage(__FUNCTION__, __LINE__, (mask), ## args)
-
#ifndef NSP32_DEBUG
-# define NSP32_DEBUG_MASK 0x000000
+# define NSP32_DEBUG_MASK 0x000000
+# define nsp32_msg(type, args...) nsp32_message ("", 0, (type), args)
+# define nsp32_dbg(mask, args...) /* */
#else
-# define NSP32_DEBUG_MASK 0xffffff
+# define NSP32_DEBUG_MASK 0xffffff
+# define nsp32_msg(type, args...) \
+ nsp32_message (__FUNCTION__, __LINE__, (type), args)
+# define nsp32_dbg(mask, args...) \
+ nsp32_dmessage(__FUNCTION__, __LINE__, (mask), args)
#endif
-#define NSP32_DEBUG_QUEUECOMMAND 0x000001
-#define NSP32_DEBUG_REGISTER 0x000002
-#define NSP32_DEBUG_AUTOSCSI 0x000004
-#define NSP32_DEBUG_INTR 0x000008
-#define NSP32_DEBUG_SGLIST 0x000010
-#define NSP32_DEBUG_BUSFREE 0x000020
-#define NSP32_DEBUG_CDB_CONTENTS 0x000040
-#define NSP32_DEBUG_RESELECTION 0x000080
-#define NSP32_DEBUG_MSGINOCCUR 0x000100
-#define NSP32_DEBUG_EEPROM 0x000200
-#define NSP32_DEBUG_MSGOUTOCCUR 0x000400
-#define NSP32_DEBUG_BUSRESET 0x000800
-#define NSP32_DEBUG_RESTART 0x001000
-#define NSP32_DEBUG_SYNC 0x002000
-#define NSP32_DEBUG_WAIT 0x004000
-#define NSP32_DEBUG_TARGETFLAG 0x008000
-#define NSP32_DEBUG_PROC 0x010000
-#define NSP32_DEBUG_INIT 0x020000
-#define NSP32_SPECIAL_PRINT_REGISTER 0x100000
+#define NSP32_DEBUG_QUEUECOMMAND BIT(0)
+#define NSP32_DEBUG_REGISTER BIT(1)
+#define NSP32_DEBUG_AUTOSCSI BIT(2)
+#define NSP32_DEBUG_INTR BIT(3)
+#define NSP32_DEBUG_SGLIST BIT(4)
+#define NSP32_DEBUG_BUSFREE BIT(5)
+#define NSP32_DEBUG_CDB_CONTENTS BIT(6)
+#define NSP32_DEBUG_RESELECTION BIT(7)
+#define NSP32_DEBUG_MSGINOCCUR BIT(8)
+#define NSP32_DEBUG_EEPROM BIT(9)
+#define NSP32_DEBUG_MSGOUTOCCUR BIT(10)
+#define NSP32_DEBUG_BUSRESET BIT(11)
+#define NSP32_DEBUG_RESTART BIT(12)
+#define NSP32_DEBUG_SYNC BIT(13)
+#define NSP32_DEBUG_WAIT BIT(14)
+#define NSP32_DEBUG_TARGETFLAG BIT(15)
+#define NSP32_DEBUG_PROC BIT(16)
+#define NSP32_DEBUG_INIT BIT(17)
+#define NSP32_SPECIAL_PRINT_REGISTER BIT(20)
#define NSP32_DEBUG_BUF_LEN 100
char buf[NSP32_DEBUG_BUF_LEN];
va_start(args, fmt);
- vsprintf(buf, fmt, args);
+ vsnprintf(buf, sizeof(buf), fmt, args);
va_end(args);
#ifndef NSP32_DEBUG
#endif
}
+#ifdef NSP32_DEBUG
static void nsp32_dmessage(const char *func, int line, int mask, char *fmt, ...)
{
va_list args;
char buf[NSP32_DEBUG_BUF_LEN];
va_start(args, fmt);
- vsprintf(buf, fmt, args);
+ vsnprintf(buf, sizeof(buf), fmt, args);
va_end(args);
if (mask & NSP32_DEBUG_MASK) {
- printk("Ninja: %d %s (%d): %s\n", mask, func, line, buf);
+ printk("nsp32-debug: 0x%x %s (%d): %s\n", mask, func, line, buf);
}
}
+#endif
#ifdef NSP32_DEBUG
# include "nsp32_debug.c"
# define show_autophase(arg) /* */
#endif
-#ifdef NSP32_DEBUG
-static int pc_debug = NSP32_DEBUG;
-MODULE_PARM(pc_debug, "i");
-#define DEBUG(n, args...) if (pc_debug>(n)) printk(/*KERN_DEBUG*/ args)
-#else
-#define DEBUG(n, args...)
-#endif
-
-
/*
* IDENTIFY Message
*/
-static void nsp32_build_identify(nsp32_hw_data *data, Scsi_Cmnd *SCpnt)
+static void nsp32_build_identify(Scsi_Cmnd *SCpnt)
{
- int pos = data->msgoutlen;
+ nsp32_hw_data *data = (nsp32_hw_data *)SCpnt->device->host->hostdata;
+ int pos = data->msgout_len;
+ int mode = FALSE;
- data->msgoutbuf[pos++] =
- 0x80 | /* Identify */
-#if 0
- /* XXX: Auto DiscPriv detection is progressing... */
- 0x40 | /* DiscPriv */
-#endif
- SCpnt->device->lun; /* LUNTRN */
+ /* XXX: Auto DiscPriv detection is progressing... */
+ if (disc_priv == 0) {
+ /* mode = TRUE; */
+ }
- data->msgoutlen = pos;
+ data->msgoutbuf[pos] = IDENTIFY(mode, SCpnt->device->lun); pos++;
+
+ data->msgout_len = pos;
}
/*
* SDTR Message Routine
*/
-static void nsp32_build_sdtr(nsp32_hw_data *data,
- unsigned char period, unsigned char offset)
+static void nsp32_build_sdtr(Scsi_Cmnd *SCpnt,
+ unsigned char period,
+ unsigned char offset)
{
- int pos = data->msgoutlen;
+ nsp32_hw_data *data = (nsp32_hw_data *)SCpnt->device->host->hostdata;
+ int pos = data->msgout_len;
- data->msgoutbuf[pos++] = EXTENDED_MESSAGE;
- data->msgoutbuf[pos++] = EXTENDED_SDTR_LEN;
- data->msgoutbuf[pos++] = EXTENDED_SDTR;
- data->msgoutbuf[pos++] = period;
- data->msgoutbuf[pos++] = offset;
+ data->msgoutbuf[pos] = EXTENDED_MESSAGE; pos++;
+ data->msgoutbuf[pos] = EXTENDED_SDTR_LEN; pos++;
+ data->msgoutbuf[pos] = EXTENDED_SDTR; pos++;
+ data->msgoutbuf[pos] = period; pos++;
+ data->msgoutbuf[pos] = offset; pos++;
- data->msgoutlen = pos;
+ data->msgout_len = pos;
}
/*
* No Operation Message
*/
-static void nsp32_build_nop(nsp32_hw_data *data)
+static void nsp32_build_nop(Scsi_Cmnd *SCpnt)
{
- int pos = data->msgoutlen;
+ nsp32_hw_data *data = (nsp32_hw_data *)SCpnt->device->host->hostdata;
+ int pos = data->msgout_len;
if (pos != 0) {
nsp32_msg(KERN_WARNING,
return;
}
- data->msgoutbuf[pos++] = NOP;
- data->msgoutlen = pos;
+ data->msgoutbuf[pos] = NOP; pos++;
+ data->msgout_len = pos;
}
/*
* Reject Message
*/
-static void nsp32_build_reject(nsp32_hw_data *data)
+static void nsp32_build_reject(Scsi_Cmnd *SCpnt)
{
- int pos = data->msgoutlen;
+ nsp32_hw_data *data = (nsp32_hw_data *)SCpnt->device->host->hostdata;
+ int pos = data->msgout_len;
- data->msgoutbuf[pos++] = MESSAGE_REJECT;
- data->msgoutlen = pos;
+ data->msgoutbuf[pos] = MESSAGE_REJECT; pos++;
+ data->msgout_len = pos;
}
/*
{
unsigned int base = SCpnt->host->io_port;
- DEBUG(0, __func__ " time=%d\n", time);
+ nsp32_dbg(NSP32_DEBUG_INTR, "timer=%d", time);
if (time & (~TIMER_CNT_MASK)) {
- printk("timer set overflow\n");
+ nsp32_dbg(NSP32_DEBUG_INTR, "timer set overflow");
}
nsp32_write2(base, TIMER_SET, time & TIMER_CNT_MASK);
/*
* set SCSI command and other parameter to asic, and start selection phase
*/
-static int nsp32hw_start_selection(Scsi_Cmnd *SCpnt, nsp32_hw_data *data)
+static int nsp32_selection_autopara(Scsi_Cmnd *SCpnt)
{
- unsigned int host_id = SCpnt->device->host->this_id;
- unsigned int base = SCpnt->device->host->io_port;
- unsigned char target = SCpnt->device->id;
- unsigned char *param = data->autoparam;
- unsigned char phase, arbit;
- int i, time;
- unsigned int msgout;
- unsigned long l;
- unsigned short s;
+ nsp32_hw_data *data = (nsp32_hw_data *)SCpnt->device->host->hostdata;
+ unsigned int base = SCpnt->device->host->io_port;
+ unsigned int host_id = SCpnt->device->host->this_id;
+ unsigned char target = SCpnt->device->id;
+ nsp32_autoparam *param = data->autoparam;
+ unsigned char phase;
+ int i, ret;
+ unsigned int msgout;
+ u16_le s;
+
+ nsp32_dbg(NSP32_DEBUG_AUTOSCSI, "in");
/*
* check bus free
/*
* message out
*
- * Note: If the range of msgoutlen is 1 - 3, fill scsi_msgout.
+ * Note: If the range of msgout_len is 1 - 3, fill scsi_msgout.
* over 3 messages needs another routine.
*/
- if (data->msgoutlen == 0) {
+ if (data->msgout_len == 0) {
nsp32_msg(KERN_ERR, "SCSI MsgOut without any message!");
SCpnt->result = DID_ERROR << 16;
return FALSE;
- } else if (data->msgoutlen > 0 && data->msgoutlen <= 3) {
+ } else if (data->msgout_len > 0 && data->msgout_len <= 3) {
msgout = 0;
- for (i=0; i<data->msgoutlen; i++) {
+ for (i = 0; i < data->msgout_len; i++) {
/*
* the sending order of the message is:
* MCNT 3: MSG#0 -> MSG#1 -> MSG#2
* MCNT 1: MSG#2
*/
msgout >>= 8;
- msgout |= (unsigned int)(data->msgoutbuf[i] << 24);
+ msgout |= ((unsigned int)(data->msgoutbuf[i]) << 24);
}
msgout |= MV_VALID; /* MV valid */
- msgout |= (unsigned int)data->msgoutlen; /* len */
+ msgout |= (unsigned int)data->msgout_len; /* len */
} else {
- /* data->msgoutlen > 3 */
+ /* data->msgout_len > 3 */
msgout = 0;
}
+ // nsp_dbg(NSP32_DEBUG_AUTOSCSI, "sel time out=0x%x\n", nsp32_read2(base, SEL_TIME_OUT));
+ // nsp32_write2(base, SEL_TIME_OUT, SEL_TIMEOUT_TIME);
+
/*
* setup asic parameter
*/
- memset(param, 0, AUTOPARAM_SIZE);
+ memset(param, 0, sizeof(nsp32_autoparam));
/* cdb */
- for (i=0; i<SCpnt->cmd_len; i++) {
- param[4*i] = SCpnt->cmnd[i];
+ for (i = 0; i < SCpnt->cmd_len; i++) {
+ param->cdb[4 * i] = SCpnt->cmnd[i];
}
- /* message out */
- param[4*0x10 +0] = (msgout & 0x000000ff) >> 0;
- param[4*0x10 +1] = (msgout & 0x0000ff00) >> 8;
- param[4*0x10 +2] = (msgout & 0x00ff0000) >> 16;
- param[4*0x10 +3] = (msgout & 0xff000000) >> 24;
+ /* outgoing messages */
+ param->msgout = cpu_to_le32(msgout);
+
+ /* syncreg, ackwidth, target id, SREQ sampling rate */
+ param->syncreg = data->cur_target->syncreg;
+ param->ackwidth = data->cur_target->ackwidth;
+ param->target_id = BIT(host_id) | BIT(target);
+ param->sample_reg = data->cur_target->sample_reg;
- /* syncreg, ackwidth, target id, sampleing rate */
- param[4*0x11 +0] = data->curtarget->syncreg;
- param[4*0x11 +1] = data->curtarget->ackwidth;
- param[4*0x11 +2] = BIT(host_id) | BIT(target);
- param[4*0x11 +3] = 0;
+ // nsp32_dbg(NSP32_DEBUG_AUTOSCSI, "sample rate=0x%x\n", data->cur_target->sample_reg);
/* command control */
- s = (CLEAR_CDB_FIFO_POINTER | AUTOSCSI_START |
- AUTO_MSGIN_00_OR_04 | AUTO_MSGIN_02 | AUTO_ATN);
- param[4*0x12 +0] = (s & 0x00ff) >> 0;
- param[4*0x12 +1] = (s & 0xff00) >> 8;
+ param->command_control = cpu_to_le16(CLEAR_CDB_FIFO_POINTER |
+ AUTOSCSI_START |
+ AUTO_MSGIN_00_OR_04 |
+ AUTO_MSGIN_02 |
+ AUTO_ATN );
+
/* transfer control */
s = 0;
break;
default:
nsp32_msg(KERN_ERR, "unknown trans_method");
+ break;
}
/*
- * ORed BLIEND_MODE, FIFO intr is decreased, instead of PCI bus waits.
+ * OR-ed BLIEND_MODE, FIFO intr is decreased, instead of PCI bus waits.
* For bus master transfer, it's taken off.
*/
s |= (TRANSFER_GO | ALL_COUNTER_CLR);
- param[4*0x12 +2] = (s & 0x00ff) >> 0;
- param[4*0x12 +3] = (s & 0xff00) >> 8;
+ param->transfer_control = cpu_to_le16(s);
/* sg table addr */
- l = data->curlunt->sglun_paddr;
- param[4*0x13 +0] = (l & 0x000000ff) >> 0;
- param[4*0x13 +1] = (l & 0x0000ff00) >> 8;
- param[4*0x13 +2] = (l & 0x00ff0000) >> 16;
- param[4*0x13 +3] = (l & 0xff000000) >> 24;
+ param->sgt_pointer = cpu_to_le32(data->cur_lunt->sglun_paddr);
/*
- * transfer parameter to asic
+ * transfer parameter to ASIC
*/
- nsp32_write4(base, SGT_ADR, virt_to_bus(param));
+ nsp32_write4(base, SGT_ADR, data->auto_paddr);
nsp32_write2(base, COMMAND_CONTROL, CLEAR_CDB_FIFO_POINTER |
AUTO_PARAMETER );
/*
- * Arbitration Status Check
- *
- * Note: Arbitration counter is wait during ARBIT_GO is not lifting.
- * Using udelay(1) consumes CPU time and system time, but
- * arbitration delay time is defined minimal 2.4us in SCSI
- * specification, thus udelay works as coarse grained wait timer.
- */
- time = 0;
- do {
- arbit = nsp32_read1(base, ARBIT_STATUS);
- nsp32_dbg(NSP32_DEBUG_AUTOSCSI, "arbit=0x%x", arbit);
- } while ((arbit & (ARBIT_WIN | ARBIT_FAIL)) == 0 &&
- (time++ <= 1000));
-
- nsp32_dbg(NSP32_DEBUG_AUTOSCSI,
- "arbit: 0x%x, delay time: %d", arbit, time);
-
- if (arbit & ARBIT_WIN) {
- SCpnt->result = DID_OK << 16;
- /* PCI LED on! */
- nsp32_index_write1(base, EXT_PORT, LED_ON);
- } else if (arbit & ARBIT_FAIL) {
- SCpnt->result = DID_BUS_BUSY << 16;
- nsp32_write1(base, SET_ARBIT, ARBIT_CLEAR);
- return FALSE;
- } else {
- /* unknown error or ARBIT_GO timeout */
- nsp32_dbg(NSP32_DEBUG_AUTOSCSI, "arbit fail");
- SCpnt->result = DID_NO_CONNECT << 16;
- nsp32_write1(base, SET_ARBIT, ARBIT_CLEAR);
- return FALSE;
- }
-
- /*
- * clear Arbit
+ * Check arbitration
*/
- nsp32_write1(base, SET_ARBIT, ARBIT_CLEAR);
+ ret = nsp32_arbitration(SCpnt, base);
- return TRUE;
+ return ret;
}
/*
* Selection with AUTO SCSI (without AUTO PARAMETER)
*/
-static int nsp32_selection_autoscsi(Scsi_Cmnd *SCpnt, nsp32_hw_data *data)
+static int nsp32_selection_autoscsi(Scsi_Cmnd *SCpnt)
{
+ nsp32_hw_data *data = (nsp32_hw_data *)SCpnt->device->host->hostdata;
+ unsigned int base = SCpnt->device->host->io_port;
+ unsigned int host_id = SCpnt->device->host->this_id;
+ unsigned char target = SCpnt->device->id;
unsigned char phase;
- unsigned char arbit;
int status;
- int i;
unsigned short command = 0;
- int time = 0;
- unsigned int msgout = 0;
+ unsigned int msgout = 0;
unsigned short execph;
- unsigned int base = data->BaseAddress;
+ int i;
+
+ nsp32_dbg(NSP32_DEBUG_AUTOSCSI, "in");
/*
* IRQ disable
* check bus line
*/
phase = nsp32_read1(base, SCSI_BUS_MONITOR);
- if(((phase & BUSMON_BSY) == 1) ||
- (phase & BUSMON_SEL) == 1) {
+ if(((phase & BUSMON_BSY) == 1) || (phase & BUSMON_SEL) == 1) {
nsp32_msg(KERN_WARNING, "bus busy");
SCpnt->result = DID_BUS_BUSY << 16;
status = 1;
/*
* set CDB0 - CDB15
*/
- for (i=0; i<SCpnt->cmd_len; i++) {
+ for (i = 0; i < SCpnt->cmd_len; i++) {
nsp32_write1(base, COMMAND_DATA, SCpnt->cmnd[i]);
}
- nsp32_dbg(NSP32_DEBUG_CDB_CONTENTS, "CDB[0]=[0x%x]", SCpnt->cmnd[i]);
+ nsp32_dbg(NSP32_DEBUG_CDB_CONTENTS, "CDB[0]=[0x%x]", SCpnt->cmnd[0]);
/*
- * set SCSIOUT LATCH(initiator)/TARGET(target) (ORed) ID
+ * set SCSIOUT LATCH(initiator)/TARGET(target) (OR-ed) ID
*/
- nsp32_write1(base, SCSI_OUT_LATCH_TARGET_ID,
- ((1 << NSP32_HOST_SCSIID) | (1 << SCpnt->device->id)));
+ nsp32_write1(base, SCSI_OUT_LATCH_TARGET_ID, BIT(host_id) | BIT(target));
/*
* set SCSI MSGOUT REG
*
- * Note: If the range of msgoutlen is 1 - 3, fill scsi_msgout.
+ * Note: If the range of msgout_len is 1 - 3, fill scsi_msgout.
* over 3 messages needs another routine.
*/
- if (data->msgoutlen == 0) {
- nsp32_msg(KERN_ERR,
- "SCSI MsgOut without any message!");
+ if (data->msgout_len == 0) {
+ nsp32_msg(KERN_ERR, "SCSI MsgOut without any message!");
SCpnt->result = DID_ERROR << 16;
status = 1;
goto out;
- } else if (data->msgoutlen > 0 && data->msgoutlen <= 3) {
+ } else if (data->msgout_len > 0 && data->msgout_len <= 3) {
msgout = 0;
- for (i=0; i<data->msgoutlen; i++) {
+ for (i = 0; i < data->msgout_len; i++) {
/*
* the sending order of the message is:
* MCNT 3: MSG#0 -> MSG#1 -> MSG#2
* MCNT 1: MSG#2
*/
msgout >>= 8;
- msgout |= (unsigned int)(data->msgoutbuf[i] << 24);
+ msgout |= ((unsigned int)(data->msgoutbuf[i]) << 24);
}
msgout |= MV_VALID; /* MV valid */
- msgout |= (unsigned int)data->msgoutlen; /* len */
+ msgout |= (unsigned int)data->msgout_len; /* len */
nsp32_write4(base, SCSI_MSG_OUT, msgout);
} else {
- /* data->msgoutlen > 3 */
+ /* data->msgout_len > 3 */
nsp32_write4(base, SCSI_MSG_OUT, 0);
}
/*
* set selection timeout(= 250ms)
*/
- nsp32_write2(base, SEL_TIME_OUT, SEL_TIMEOUT_TIME);
+ nsp32_write2(base, SEL_TIME_OUT, SEL_TIMEOUT_TIME);
/*
- * set smpl rate
+ * set SREQ hazard killer sampling rate
*
- * TODO: smpl_rate (BASE+0F) is 0 when internal clock = 40MHz.
+ * TODO: sample_rate (BASE+0F) is 0 when internal clock = 40MHz.
* check other internal clock!
*/
- nsp32_write1(base, SREQ_SMPL_RATE, 0);
+ nsp32_write1(base, SREQ_SMPL_RATE, data->cur_target->sample_reg);
/*
* clear Arbit
*/
- nsp32_write1(base, SET_ARBIT, ARBIT_CLEAR);
+ nsp32_write1(base, SET_ARBIT, ARBIT_CLEAR);
/*
* set SYNCREG
* Don't set BM_START_ADR before setting this register.
*/
- nsp32_write1(base, SYNC_REG, data->curtarget->syncreg);
+ nsp32_write1(base, SYNC_REG, data->cur_target->syncreg);
/*
* set ACKWIDTH
*/
- nsp32_write1(base, ACK_WIDTH, data->curtarget->ackwidth);
+ nsp32_write1(base, ACK_WIDTH, data->cur_target->ackwidth);
nsp32_dbg(NSP32_DEBUG_AUTOSCSI,
"syncreg=0x%x, ackwidth=0x%x, sgtpaddr=0x%x, id=0x%x",
nsp32_read1(base, SYNC_REG), nsp32_read1(base, ACK_WIDTH),
nsp32_read4(base, SGT_ADR), nsp32_read1(base, SCSI_OUT_LATCH_TARGET_ID));
- nsp32_dbg(NSP32_DEBUG_AUTOSCSI, "msgoutlen=%d, msgout=0x%x",
- data->msgoutlen, msgout);
+ nsp32_dbg(NSP32_DEBUG_AUTOSCSI, "msgout_len=%d, msgout=0x%x",
+ data->msgout_len, msgout);
/*
* set SGT ADDR (physical address)
*/
- nsp32_write4(base, SGT_ADR, data->curlunt->sglun_paddr);
+ nsp32_write4(base, SGT_ADR, data->cur_lunt->sglun_paddr);
/*
* set TRANSFER CONTROL REG
*/
command = 0;
- command |= ( TRANSFER_GO | ALL_COUNTER_CLR);
+ command |= (TRANSFER_GO | ALL_COUNTER_CLR);
if (data->trans_method & NSP32_TRANSFER_BUSMASTER) {
if (SCpnt->request_bufflen > 0) {
command |= BM_START;
/*
* start AUTO SCSI, kick off arbitration
*/
- command = 0;
- command |= (CLEAR_CDB_FIFO_POINTER
- | AUTOSCSI_START
- | AUTO_MSGIN_00_OR_04
- | AUTO_MSGIN_02
- | AUTO_ATN);
+ command = (CLEAR_CDB_FIFO_POINTER |
+ AUTOSCSI_START |
+ AUTO_MSGIN_00_OR_04 |
+ AUTO_MSGIN_02 |
+ AUTO_ATN );
nsp32_write2(base, COMMAND_CONTROL, command);
/*
- * Arbitration Status Check
- *
- * Note: Arbitration counter is wait during ARBIT_GO is not lifting.
- * Using udelay(1) consumes CPU time and system time, but
- * arbitration delay time is defined minimal 2.4us in SCSI
- * specification, thus udelay works as coarse grained wait timer.
+ * Check arbitration
*/
- time = 0;
- while(1) {
- arbit = nsp32_read1(base, ARBIT_STATUS);
- if(arbit & ARBIT_GO) {
- udelay(1);
- time++;
- if ( time > ARBIT_TIMEOUT_TIME ) {
- /* something lock up! guess no connection */
- SCpnt->result = DID_NO_CONNECT << 16;
- status = FALSE;
- goto out;
- }
- } else {
- break;
- }
- };
-
- nsp32_dbg(NSP32_DEBUG_AUTOSCSI, "arbit: 0x%x, delay time: %d", arbit, time);
+ status = nsp32_arbitration(SCpnt, base);
+ out:
/*
- * check Arbitration Status Result
+ * IRQ enable
*/
- if(arbit & ARBIT_WIN) {
+ nsp32_write2(base, IRQ_CONTROL, 0);
+
+ return status;
+}
+
+
+/*
+ * Arbitration Status Check
+ *
+ * Note: Arbitration counter is waited during ARBIT_GO is not lifting.
+ * Using udelay(1) consumes CPU time and system time, but
+ * arbitration delay time is defined minimal 2.4us in SCSI
+ * specification, thus udelay works as coarse grained wait timer.
+ */
+static int nsp32_arbitration(Scsi_Cmnd *SCpnt, unsigned int base)
+{
+ unsigned char arbit;
+ int status = TRUE;
+ int time = 0;
+
+ do {
+ arbit = nsp32_read1(base, ARBIT_STATUS);
+ time++;
+ } while ((arbit & (ARBIT_WIN | ARBIT_FAIL)) == 0 &&
+ (time <= ARBIT_TIMEOUT_TIME));
+
+ nsp32_dbg(NSP32_DEBUG_AUTOSCSI,
+ "arbit: 0x%x, delay time: %d", arbit, time);
+
+ if (arbit & ARBIT_WIN) {
/* Arbitration succeeded */
- status = TRUE;
SCpnt->result = DID_OK << 16;
- /* PCI LED on! */
- nsp32_index_write1(base, EXT_PORT, LED_ON);
- } else if(arbit & ARBIT_FAIL) {
+ nsp32_index_write1(base, EXT_PORT, LED_ON); /* PCI LED on */
+ } else if (arbit & ARBIT_FAIL) {
/* Arbitration failed */
- status = FALSE;
SCpnt->result = DID_BUS_BUSY << 16;
- } else {
- /* unknown error? */
status = FALSE;
- SCpnt->result = DID_ERROR << 16;
+ } else {
+ /*
+ * unknown error or ARBIT_GO timeout,
+ * something lock up! guess no connection.
+ */
+ nsp32_dbg(NSP32_DEBUG_AUTOSCSI, "arbit timeout");
SCpnt->result = DID_NO_CONNECT << 16;
- }
+ status = FALSE;
+ }
/*
* clear Arbit
*/
nsp32_write1(base, SET_ARBIT, ARBIT_CLEAR);
- out:
- /*
- * IRQ enable
- */
- nsp32_write2(base, IRQ_CONTROL, 0);
-
- return(status);
+ return status;
}
* reselection target id&lun must be already set.
* SCSI-2 says IDENTIFY implies RESTORE_POINTER operation.
*/
-static int nsp32_reselection(nsp32_hw_data *data, unsigned char newlun)
+static int nsp32_reselection(Scsi_Cmnd *SCpnt, unsigned char newlun)
{
- unsigned int base = data->BaseAddress;
- unsigned char tmpid, newid;
+ nsp32_hw_data *data = (nsp32_hw_data *)SCpnt->device->host->hostdata;
+ unsigned int host_id = SCpnt->device->host->this_id;
+ unsigned int base = SCpnt->device->host->io_port;
+ unsigned char tmpid, newid;
nsp32_dbg(NSP32_DEBUG_RESELECTION, "enter");
* calculate reselected SCSI ID
*/
tmpid = nsp32_read1(base, RESELECT_ID);
- tmpid &= 0x7f;
+ tmpid &= (~BIT(host_id));
newid = 0;
while (tmpid) {
if (tmpid & 1) {
* or current nexus is not existed, unexpected
* reselection is occurred. Send reject message.
*/
- if (newid >= MAX_TARGET || newlun >= MAX_LUN) {
+ if (newid >= NUMBER(data->lunt) || newlun >= NUMBER(data->lunt[0])) {
nsp32_msg(KERN_WARNING, "unknown id/lun");
return FALSE;
- } else if(data->lunt[newid][newlun]->SCpnt == NULL) {
+ } else if(data->lunt[newid][newlun].SCpnt == NULL) {
nsp32_msg(KERN_WARNING, "no SCSI command is processing");
return FALSE;
}
- data->pid = newid;
- data->plun = newlun;
- data->curtarget = &data->target[newid];
- data->curlunt = data->lunt[newid][newlun];
+ data->cur_id = newid;
+ data->cur_lun = newlun;
+ data->cur_target = &(data->target[newid]);
+ data->cur_lunt = &(data->lunt[newid][newlun]);
/* reset SACK/SavedACK counter (or ALL clear?) */
nsp32_write4(base, CLR_COUNTER, CLRCOUNTER_ALLMASK);
/*
- * nsp32hw_setup_sg_table - build scatter gather list for transfer data
+ * nsp32_setup_sg_table - build scatter gather list for transfer data
* with bus master.
*
* Note: NinjaSCSI-32Bi/UDE bus master can not transfer over 64KB at a time.
*/
-static int nsp32hw_setup_sg_table(Scsi_Cmnd *SCpnt, nsp32_hw_data *data)
+static int nsp32_setup_sg_table(Scsi_Cmnd *SCpnt)
{
- struct scatterlist *sgl;
- struct nsp32_sgtable *sgt = data->curlunt->sglun->sgt;
+ nsp32_hw_data *data = (nsp32_hw_data *)SCpnt->device->host->hostdata;
+ struct scatterlist *sgl;
+ nsp32_sgtable *sgt = data->cur_lunt->sglun->sgt;
int num, i;
+ u32_le l;
if (SCpnt->request_bufflen == 0) {
return TRUE;
sgl = (struct scatterlist *)SCpnt->request_buffer;
num = pci_map_sg(data->Pci, sgl, SCpnt->use_sg,
scsi_to_pci_dma_dir(SCpnt->sc_data_direction));
- for (i=0; i<num; i++) {
+ for (i = 0; i < num; i++) {
/*
* Build nsp32_sglist, substitute sg dma addresses.
*/
sgt[i].len = cpu_to_le32(sg_dma_len(sgl));
sgl++;
- if (sgt[i].len > 65536) {
+ if (le32_to_cpu(sgt[i].len) > 0x10000) {
nsp32_msg(KERN_ERR,
- "can't transfer over 64KB at a time");
+ "can't transfer over 64KB at a time, size=0x%lx", le32_to_cpu(sgt[i].len));
return FALSE;
}
nsp32_dbg(NSP32_DEBUG_SGLIST,
- "num 0x%x : addr 0x%lx len 0x%x",
- i, sgt[i].addr, sgt[i].len);
+ "num 0x%x : addr 0x%lx len 0x%lx",
+ i,
+ le32_to_cpu(sgt[i].addr),
+ le32_to_cpu(sgt[i].len ));
}
- sgt[num-1].len |= NSP32_SG_END_SGT; /* set end mark */
+
+ /* set end mark */
+ l = le32_to_cpu(sgt[num-1].len);
+ sgt[num-1].len = cpu_to_le32(l | SGTEND);
+
} else {
SCpnt->SCp.have_data_in = pci_map_single(data->Pci,
SCpnt->request_buffer, SCpnt->request_bufflen,
scsi_to_pci_dma_dir(SCpnt->sc_data_direction));
+
sgt[0].addr = cpu_to_le32(SCpnt->SCp.have_data_in);
- sgt[0].len = cpu_to_le32(SCpnt->request_bufflen);
- sgt[0].len |= NSP32_SG_END_SGT; /* set end mark */
+ sgt[0].len = cpu_to_le32(SCpnt->request_bufflen | SGTEND); /* set end mark */
- nsp32_dbg(NSP32_DEBUG_SGLIST, "single : addr 0x%lx len=0x%x",
- sgt[0].addr, sgt[0].len);
+ if (SCpnt->request_bufflen > 0x10000) {
+ nsp32_msg(KERN_ERR,
+ "can't transfer over 64KB at a time, size=0x%lx", SCpnt->request_bufflen);
+ return FALSE;
+ }
+ nsp32_dbg(NSP32_DEBUG_SGLIST, "single : addr 0x%lx len=0x%lx",
+ le32_to_cpu(sgt[0].addr),
+ le32_to_cpu(sgt[0].len ));
}
return TRUE;
static int nsp32_queuecommand(Scsi_Cmnd *SCpnt, void (*done)(Scsi_Cmnd *))
{
nsp32_hw_data *data = (nsp32_hw_data *)SCpnt->device->host->hostdata;
- struct nsp32_target *target;
- struct nsp32_lunt *curlunt;
+ nsp32_target *target;
+ nsp32_lunt *cur_lunt;
int ret;
nsp32_dbg(NSP32_DEBUG_QUEUECOMMAND,
SCpnt->device->id, SCpnt->device->lun, SCpnt->cmnd[0], SCpnt->cmd_len,
SCpnt->use_sg, SCpnt->request_buffer, SCpnt->request_bufflen);
- if (data->CurrentSC != NULL ) {
+ if (data->CurrentSC != NULL) {
nsp32_msg(KERN_ERR, "Currentsc != NULL. Cancel this command request");
data->CurrentSC = NULL;
SCpnt->result = DID_NO_CONNECT << 16;
done(SCpnt);
- return 1;
+ return SCSI_MLQUEUE_HOST_BUSY;
}
/* check target ID is not same as this initiator ID */
- if (SCpnt->device->id == NSP32_HOST_SCSIID) {
+ if (SCpnt->device->id == SCpnt->device->host->this_id) {
+ nsp32_dbg(NSP32_DEBUG_QUEUECOMMAND, "terget==host???");
SCpnt->result = DID_BAD_TARGET << 16;
done(SCpnt);
- return 1;
+ return SCSI_MLQUEUE_DEVICE_BUSY;
}
/* check target LUN is allowable value */
if (SCpnt->device->lun >= MAX_LUN) {
+ nsp32_dbg(NSP32_DEBUG_QUEUECOMMAND, "no more lun");
SCpnt->result = DID_BAD_TARGET << 16;
done(SCpnt);
- return 1;
+ return SCSI_MLQUEUE_DEVICE_BUSY;
}
show_command(SCpnt);
data->CurrentSC = SCpnt;
SCpnt->SCp.Status = CHECK_CONDITION;
SCpnt->SCp.Message = 0;
- SCpnt->resid = 0; //SCpnt->request_bufflen;
+ SCpnt->resid = SCpnt->request_bufflen;
SCpnt->SCp.ptr = (char *) SCpnt->request_buffer;
SCpnt->SCp.this_residual = SCpnt->request_bufflen;
SCpnt->SCp.buffers_residual = 0;
/* initialize data */
- data->msgoutlen = 0;
- data->msginlen = 0;
- curlunt = data->lunt[SCpnt->device->id][SCpnt->device->lun];
- curlunt->SCpnt = SCpnt;
- curlunt->save_datp = 0;
- curlunt->msgin03 = FALSE;
- data->curlunt = curlunt;
- data->pid = SCpnt->device->id;
- data->plun = SCpnt->device->lun;
-
- ret = nsp32hw_setup_sg_table(SCpnt, data);
+ data->msgout_len = 0;
+ data->msgin_len = 0;
+ cur_lunt = &(data->lunt[SCpnt->device->id][SCpnt->device->lun]);
+ cur_lunt->SCpnt = SCpnt;
+ cur_lunt->save_datp = 0;
+ cur_lunt->msgin03 = FALSE;
+ data->cur_lunt = cur_lunt;
+ data->cur_id = SCpnt->device->id;
+ data->cur_lun = SCpnt->device->lun;
+
+ ret = nsp32_setup_sg_table(SCpnt);
if (ret == FALSE) {
+ nsp32_msg(KERN_ERR, "SGT fail");
SCpnt->result = DID_ERROR << 16;
- nsp32_scsi_done(data, SCpnt);
+ nsp32_scsi_done(SCpnt);
+ return SCSI_MLQUEUE_HOST_BUSY;
}
/* Build IDENTIFY */
- nsp32_build_identify(data, SCpnt);
+ nsp32_build_identify(SCpnt);
/*
* If target is the first time to transfer after the reset
* message SDTR is needed to do synchronous transfer.
*/
target = &data->target[SCpnt->device->id];
- data->curtarget = target;
+ data->cur_target = target;
if (!(target->sync_flag & (SDTR_DONE | SDTR_INITIATOR | SDTR_TARGET))) {
unsigned char period, offset;
if (trans_mode != ASYNC_MODE) {
nsp32_set_max_sync(data, target, &period, &offset);
- nsp32_build_sdtr(data, period, offset);
+ nsp32_build_sdtr(SCpnt, period, offset);
target->sync_flag |= SDTR_INITIATOR;
} else {
nsp32_set_async(data, target);
/* Selection */
if (auto_param == 0) {
- ret = nsp32hw_start_selection(SCpnt, data);
+ ret = nsp32_selection_autopara(SCpnt);
} else {
- ret = nsp32_selection_autoscsi(SCpnt, data);
+ ret = nsp32_selection_autoscsi(SCpnt);
}
if (ret != TRUE) {
- nsp32_scsi_done(data, SCpnt);
- return 1;
+ nsp32_dbg(NSP32_DEBUG_QUEUECOMMAND, "selection fail");
+ nsp32_scsi_done(SCpnt);
+ return SCSI_MLQUEUE_DEVICE_BUSY;
}
return 0;
}
/* initialize asic */
-static int nsp32hw_init(struct Scsi_Host *host)
+static int nsp32hw_init(nsp32_hw_data *data)
{
- unsigned int base = host->io_port;
+ unsigned int base = data->BaseAddress;
unsigned short irq_stat;
- unsigned long lc_reg;
- unsigned char power;
- nsp32_hw_data *data = (nsp32_hw_data *)host->hostdata;
+ unsigned long lc_reg;
+ unsigned char power;
lc_reg = nsp32_index_read4(base, CFG_LATE_CACHE);
if ((lc_reg & 0xff00) == 0) {
nsp32_index_write2(base, CFG_LATE_CACHE, lc_reg & 0xffff);
}
- nsp32_write2(base, IRQ_CONTROL, IRQ_CONTROL_ALL_IRQ_MASK);
- nsp32_write2(base, TRANSFER_CONTROL, 0);
- nsp32_write4(base, BM_CNT, 0);
+ nsp32_write2(base, IRQ_CONTROL, IRQ_CONTROL_ALL_IRQ_MASK);
+ nsp32_write2(base, TRANSFER_CONTROL, 0);
+ nsp32_write4(base, BM_CNT, 0);
nsp32_write2(base, SCSI_EXECUTE_PHASE, 0);
do {
irq_stat = nsp32_read2(base, IRQ_STATUS);
+ nsp32_dbg(NSP32_DEBUG_INIT, "irq_stat 0x%x", irq_stat);
} while (irq_stat & IRQSTATUS_ANY_IRQ);
- nsp32_dbg(NSP32_DEBUG_INIT, "irq_stat 0x%x", irq_stat);
/*
* Fill FIFO_FULL_SHLD, FIFO_EMPTY_SHLD. Below parameter is
*/
if ((data->trans_method & NSP32_TRANSFER_PIO) ||
(data->trans_method & NSP32_TRANSFER_MMIO)) {
- nsp32_index_write1(base, FIFO_FULL_SHLD_COUNT, 0x40);
+ nsp32_index_write1(base, FIFO_FULL_SHLD_COUNT, 0x40);
+ nsp32_index_write1(base, FIFO_EMPTY_SHLD_COUNT, 0x40);
} else if (data->trans_method & NSP32_TRANSFER_BUSMASTER) {
- nsp32_index_write1(base, FIFO_FULL_SHLD_COUNT, 0x10);
+ nsp32_index_write1(base, FIFO_FULL_SHLD_COUNT, 0x10);
+ nsp32_index_write1(base, FIFO_EMPTY_SHLD_COUNT, 0x60);
+ } else {
+ nsp32_dbg(NSP32_DEBUG_INIT, "unknown transfer mode");
}
- nsp32_index_write1(base, FIFO_EMPTY_SHLD_COUNT, 0x60);
nsp32_dbg(NSP32_DEBUG_INIT, "full 0x%x emp 0x%x",
nsp32_index_read1(base, FIFO_FULL_SHLD_COUNT),
nsp32_index_read1(base, FIFO_EMPTY_SHLD_COUNT));
nsp32_index_write1(base, CLOCK_DIV, data->clock);
- nsp32_index_write1(base, BM_CYCLE, MEMRD_CMD1 | SGT_AUTO_PARA_MEMED_CMD);
+ nsp32_index_write1(base, BM_CYCLE, MEMRD_CMD1 | SGT_AUTO_PARA_MEMED_CMD);
nsp32_write1(base, PARITY_CONTROL, 0); /* parity check is disable */
/*
- * initialize I_MISC_WRRD register
+ * initialize MISC_WRRD register
*
* Note: Designated parameters is obeyed as following:
* MISC_SCSI_DIRECTION_DETECTOR_SELECT: It must be set.
*/
nsp32_index_write2(base, MISC_WR,
(SCSI_DIRECTION_DETECTOR_SELECT |
- DELAYED_BMSTART |
- MASTER_TERMINATION_SELECT |
- BMREQ_NEGATE_TIMING_SEL |
- AUTOSEL_TIMING_SEL |
+ DELAYED_BMSTART |
+ MASTER_TERMINATION_SELECT |
+ BMREQ_NEGATE_TIMING_SEL |
+ AUTOSEL_TIMING_SEL |
BMSTOP_CHANGE2_NONDATA_PHASE));
nsp32_index_write1(base, TERM_PWR_CONTROL, 0);
}
nsp32_write2(base, TIMER_SET, TIMER_STOP);
- nsp32_write2(base, TIMER_SET, TIMER_STOP);
+ nsp32_write2(base, TIMER_SET, TIMER_STOP); /* Required 2 times */
- nsp32_write1(base, SYNC_REG, 0);
- nsp32_write1(base, ACK_WIDTH, 0);
- nsp32_write2(base, SEL_TIME_OUT, 10000); /* 25us x10000 = 250ms defined in SCSI */
+ nsp32_write1(base, SYNC_REG, 0);
+ nsp32_write1(base, ACK_WIDTH, 0);
+ nsp32_write2(base, SEL_TIME_OUT, SEL_TIMEOUT_TIME);
/*
* enable to select designated IRQ (except for
IRQSELECT_RESELECT_IRQ |
IRQSELECT_PHASE_CHANGE_IRQ |
IRQSELECT_AUTO_SCSI_SEQ_IRQ |
- //IRQSELECT_BMCNTERR_IRQ |
+ // IRQSELECT_BMCNTERR_IRQ |
IRQSELECT_TARGET_ABORT_IRQ |
IRQSELECT_MASTER_ABORT_IRQ );
nsp32_write2(base, IRQ_CONTROL, 0);
/* PCI LED off */
nsp32_index_write1(base, EXT_PORT_DDR, LED_OFF);
- nsp32_index_write1(base, EXT_PORT, LED_OFF);
+ nsp32_index_write1(base, EXT_PORT, LED_OFF);
return TRUE;
}
int ret;
int handled = 0;
-#if LINUX_VERSION_CODE > KERNEL_VERSION(2,5,0)
+#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,5,0))
struct Scsi_Host *host = data->Host;
spin_lock_irqsave(host->host_lock, flags);
#else
"enter IRQ: %d, IRQstatus: 0x%x", irq, irq_stat);
/* is this interrupt comes from Ninja asic? */
if ((irq_stat & IRQSTATUS_ANY_IRQ) == 0) {
- nsp32_msg(KERN_INFO, "spurious interrupt: irq other 0x%x", irq_stat);
+ nsp32_dbg(NSP32_DEBUG_INTR, "shared interrupt: irq other 0x%x", irq_stat);
goto out2;
}
handled = 1;
if (data->CurrentSC != NULL) {
nsp32_msg(KERN_INFO, "clean up current SCSI command");
SCpnt->result = DID_BAD_TARGET << 16;
- nsp32_scsi_done(data, SCpnt);
+ nsp32_scsi_done(SCpnt);
}
goto out;
}
/* Timer IRQ */
if (irq_stat & IRQSTATUS_TIMER_IRQ) {
- DEBUG(0, "timer stop\n");
+ nsp32_dbg(NSP32_DEBUG_INTR, "timer stop");
nsp32_write2(base, TIMER_SET, TIMER_STOP);
goto out;
}
nsp32_do_bus_reset(data);
if (SCpnt != NULL) {
SCpnt->result = DID_RESET << 16;
- nsp32_scsi_done(data, SCpnt);
+ nsp32_scsi_done(SCpnt);
}
goto out;
}
-
+
if (SCpnt == NULL) {
- nsp32_msg(KERN_WARNING, "SCpnt==NULL this can't be happen\n");
- nsp32_msg(KERN_WARNING, "irq_stat=0x%x trans_stat=0x%x\n", irq_stat, trans_stat);
+ nsp32_msg(KERN_WARNING, "SCpnt==NULL this can't be happened");
+ nsp32_msg(KERN_WARNING, "irq_stat=0x%x trans_stat=0x%x", irq_stat, trans_stat);
goto out;
}
"selection timeout occurred");
SCpnt->result = DID_TIME_OUT << 16;
- nsp32_scsi_done(data, SCpnt);
+ nsp32_scsi_done(SCpnt);
goto out;
}
/*
* MsgOut phase was processed.
* If MSG_IN_OCCUER is not set, then MsgOut phase is
- * completed. Thus, msgoutlen must reset. Otherwise,
+ * completed. Thus, msgout_len must reset. Otherwise,
* nothing to do here. If MSG_OUT_OCCUER is occurred,
* then we will encounter the condition and check.
*/
if (!(auto_stat & MSG_IN_OCCUER) &&
- (data->msgoutlen <= 3)) {
+ (data->msgout_len <= 3)) {
/*
- * !MSG_IN_OCCUER && msgoutlen <=3
+ * !MSG_IN_OCCUER && msgout_len <=3
* ---> AutoSCSI with MSGOUTreg is processed.
*/
- data->msgoutlen = 0;
+ data->msgout_len = 0;
};
nsp32_dbg(NSP32_DEBUG_INTR, "MsgOut phase processed");
nsp32_read4(base, SACK_CNT));
nsp32_dbg(NSP32_DEBUG_INTR, "SSACK=0x%lx",
nsp32_read4(base, SAVED_SACK_CNT));
-
+
+ SCpnt->resid = 0; /* all data transfered! */
}
/*
* MsgIn Occur
*/
if (auto_stat & MSG_IN_OCCUER) {
- nsp32_msgin_occur(data, irq_stat, auto_stat);
+ nsp32_msgin_occur(SCpnt, irq_stat, auto_stat);
}
/*
* MsgOut Occur
*/
if (auto_stat & MSG_OUT_OCCUER) {
- nsp32_msgout_occur(data);
+ nsp32_msgout_occur(SCpnt);
}
/*
* Bus Free Occur
*/
if (auto_stat & BUS_FREE_OCCUER) {
- ret = nsp32_busfree_occur(data, auto_stat);
+ ret = nsp32_busfree_occur(SCpnt, auto_stat);
if (ret == TRUE) {
goto out;
}
switch(busphase) {
case BUSPHASE_DATA_OUT:
- printk( "write\n");
+ nsp32_dbg(NSP32_DEBUG_INTR, "fifo/write");
//nsp32_pio_write(SCpnt);
break;
case BUSPHASE_DATA_IN:
- printk( "read\n");
+ nsp32_dbg(NSP32_DEBUG_INTR, "fifo/read");
//nsp32_pio_read(SCpnt);
break;
case BUSPHASE_STATUS:
- //DEBUG(0, "fifo/status\n");
+ nsp32_dbg(NSP32_DEBUG_INTR, "fifo/status");
SCpnt->SCp.Status = nsp32_read1(base, SCSI_CSB_IN);
break;
default:
- printk("fifo/other phase?\n");
- printk("irq_stat=0x%x trans_stat=0x%x\n", irq_stat, trans_stat);
+ nsp32_dbg(NSP32_DEBUG_INTR, "fifo/other phase");
+ nsp32_dbg(NSP32_DEBUG_INTR, "irq_stat=0x%x trans_stat=0x%x", irq_stat, trans_stat);
show_busphase(busphase);
break;
}
switch(busphase) {
case BUSPHASE_MESSAGE_IN:
nsp32_dbg(NSP32_DEBUG_INTR, "phase chg/msg in");
- nsp32_msgin_occur(data, irq_stat, 0);
+ nsp32_msgin_occur(SCpnt, irq_stat, 0);
break;
default:
nsp32_msg(KERN_WARNING, "phase chg/other phase?");
}
#if 0
- printk("irq_stat=0x%x trans_stat=0x%x\n", irq_stat, trans_stat);
+ nsp32_dbg(NSP32_DEBUG_INTR,
+ "irq_stat=0x%x trans_stat=0x%x", irq_stat, trans_stat);
show_busphase(busphase);
#endif
nsp32_write2(base, IRQ_CONTROL, 0);
out2:
-#if LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0)
- spin_unlock_irqrestore(&io_request_lock, flags);
-#else
+#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,5,0))
spin_unlock_irqrestore(host->host_lock, flags);
+#else
+ spin_unlock_irqrestore(&io_request_lock, flags);
#endif
nsp32_dbg(NSP32_DEBUG_INTR, "exit");
#undef SPRINTF
#define SPRINTF(args...) \
- do { if(pos < buffer + length) pos += sprintf(pos, ## args); } while(0)
-static int nsp32_proc_info(struct Scsi_Host *host, char *buffer,
- char **start,
- off_t offset,
- int length,
- int inout)
+ do { \
+ if(length > (pos - buffer)) { \
+ pos += snprintf(pos, length - (pos - buffer) + 1, ## args); \
+ nsp32_dbg(NSP32_DEBUG_PROC, "buffer=0x%p pos=0x%p length=%d %d\n", buffer, pos, length, length - (pos - buffer));\
+ } \
+ } while(0)
+static int nsp32_proc_info(
+#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,5,73))
+ struct Scsi_Host *host,
+#endif
+ char *buffer,
+ char **start,
+ off_t offset,
+ int length,
+#if !(LINUX_VERSION_CODE > KERNEL_VERSION(2,5,73))
+ int hostno,
+#endif
+ int inout)
{
- char *pos = buffer;
- int thislength;
- unsigned long flags;
- nsp32_hw_data *data;
- unsigned int base;
- unsigned char mode_reg;
+ char *pos = buffer;
+ int thislength;
+ unsigned long flags;
+ nsp32_hw_data *data;
+#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,5,73))
+ int hostno;
+#else
+ struct Scsi_Host *host;
+#endif
+ unsigned int base;
+ unsigned char mode_reg;
+ int id, speed;
+ long model;
/* Write is not supported, just return. */
if (inout == TRUE) {
return -EINVAL;
}
+#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,5,73))
+ hostno = host->host_no;
+#else
+ /* search this HBA host */
+ host = scsi_host_hn_get(hostno);
+ if (host == NULL) {
+ return -ESRCH;
+ }
+#endif
data = (nsp32_hw_data *)host->hostdata;
base = host->io_port;
SPRINTF("NinjaSCSI-32 status\n\n");
- SPRINTF("Driver version: %s\n", nsp32_release_version);
- SPRINTF("SCSI host No.: %d\n", host->host_no);
+ SPRINTF("Driver version: %s, $Revision: 1.33 $\n", nsp32_release_version);
+ SPRINTF("SCSI host No.: %d\n", hostno);
SPRINTF("IRQ: %d\n", host->irq);
SPRINTF("IO: 0x%lx-0x%lx\n", host->io_port, host->io_port + host->n_io_port - 1);
- SPRINTF("MMIO(virtual address): 0x%lx\n", host->base);
+ SPRINTF("MMIO(virtual address): 0x%lx-0x%lx\n", host->base, host->base + data->MmioLength - 1);
SPRINTF("sg_tablesize: %d\n", host->sg_tablesize);
- SPRINTF("Chip revision: %d\n", (nsp32_read2(base, INDEX_REG) >> 8) - 0x4f);
+ SPRINTF("Chip revision: 0x%x\n", (nsp32_read2(base, INDEX_REG) >> 8) & 0xff);
mode_reg = nsp32_index_read1(base, CHIP_MODE);
+ model = data->pci_devid->driver_data;
#ifdef CONFIG_PM
- //SPRINTF("Power Management: %s\n", (mode_reg & OPTF) ? "yes" : "no");
+ SPRINTF("Power Management: %s\n", (mode_reg & OPTF) ? "yes" : "no");
#endif
- SPRINTF("OEM: %s\n", nsp32_model[mode_reg & (OEM0|OEM1)]);
+ SPRINTF("OEM: %ld, %s\n", (mode_reg & (OEM0|OEM1)), nsp32_model[model]);
spin_lock_irqsave(&(data->Lock), flags);
SPRINTF("CurrentSC: 0x%p\n\n", data->CurrentSC);
spin_unlock_irqrestore(&(data->Lock), flags);
+
+ SPRINTF("SDTR status\n");
+ for(id = 0; id < NUMBER(data->target); id++) {
+
+ SPRINTF("id %d: ", id);
+
+ if (id == host->this_id) {
+ SPRINTF("----- NinjaSCSI-32 host adapter\n");
+ continue;
+ }
+
+ if (data->target[id].sync_flag == SDTR_DONE) {
+ if (data->target[id].period == 0 &&
+ data->target[id].offset == ASYNC_OFFSET ) {
+ SPRINTF("async");
+ } else {
+ SPRINTF(" sync");
+ }
+ } else {
+ SPRINTF(" none");
+ }
+
+ if (data->target[id].period != 0) {
+
+ speed = 1000000 / (data->target[id].period * 4);
+
+ SPRINTF(" transfer %d.%dMB/s, offset %d",
+ speed / 1000,
+ speed % 1000,
+ data->target[id].offset
+ );
+ }
+ SPRINTF("\n");
+ }
+
+
thislength = pos - (buffer + offset);
if(thislength < 0) {
}
#undef SPRINTF
+
+
/*
- * Note: n_io_port is defined as 0x7f because I/O register port is
- * assigned as:
- * 0x800-0x8ff: memory mapped I/O port
- * 0x900-0xbff: (map same 0x800-0x8ff I/O port image repeatedly)
- * 0xc00-0xfff: CardBus status registers
+ * Reset parameters and call scsi_done for data->cur_lunt.
+ * Be careful setting SCpnt->result = DID_* before calling this function.
*/
-static int nsp32_detect(struct pci_dev *pdev)
+static void nsp32_scsi_done(Scsi_Cmnd *SCpnt)
{
- struct Scsi_Host *host; /* registered host structure */
- int ret;
- nsp32_hw_data *data;
- int i, j;
-
- nsp32_dbg(NSP32_DEBUG_REGISTER, "enter");
+ nsp32_hw_data *data = (nsp32_hw_data *)SCpnt->device->host->hostdata;
+ unsigned int base = SCpnt->device->host->io_port;
/*
- * register this HBA as SCSI device
+ * unmap pci
*/
- host = scsi_host_alloc(&nsp32_template, sizeof(nsp32_hw_data));
- if (host == NULL) {
- nsp32_msg (KERN_ERR, "failed to scsi register");
- goto err;
+ if (SCpnt->request_bufflen == 0) {
+ goto skip;
}
- /*
- * set nsp32_hw_data
- */
- data = (nsp32_hw_data *)host->hostdata;
- memset(data, 0, sizeof(nsp32_hw_data));
-
- data->IrqNumber = nsp32_data_base.IrqNumber;
- data->BaseAddress = nsp32_data_base.BaseAddress;
- data->NumAddress = nsp32_data_base.NumAddress;
- data->MmioAddress = nsp32_data_base.MmioAddress;
- data->Pci = nsp32_data_base.Pci;
- data->pci_devid = nsp32_data_base.pci_devid;
-
- host->irq = data->IrqNumber;
- host->io_port = data->BaseAddress;
- host->unique_id = data->BaseAddress;
- host->n_io_port = data->NumAddress;
- host->base = data->MmioAddress;
- scsi_set_device(host, &data->Pci->dev);
-
- data->Host = host;
- spin_lock_init(&(data->Lock));
-
- data->curlunt = NULL;
- data->curtarget = NULL;
+ if (SCpnt->use_sg) {
+ pci_unmap_sg(data->Pci,
+ (struct scatterlist *)SCpnt->buffer,
+ SCpnt->use_sg,
+ scsi_to_pci_dma_dir(SCpnt->sc_data_direction));
+ } else {
+ pci_unmap_single(data->Pci,
+ (u32)SCpnt->SCp.have_data_in,
+ SCpnt->request_bufflen,
+ scsi_to_pci_dma_dir(SCpnt->sc_data_direction));
+ }
+ skip:
/*
- * Bus master transfer mode is supported currently.
+ * clear TRANSFERCONTROL_BM_START
*/
- data->trans_method = NSP32_TRANSFER_BUSMASTER;
+ nsp32_write2(base, TRANSFER_CONTROL, 0);
+ nsp32_write4(base, BM_CNT, 0);
/*
- * Set clock div, CLOCK_4 (HBA has external clock, and
- * dividing * 100ns/4).
- * Currently CLOCK_4 has only tested, not for CLOCK_2/PCICLK yet.
+ * call scsi_done
*/
- data->clock = CLOCK_4;
+ (*SCpnt->scsi_done)(SCpnt);
/*
- * Select appropriate nsp32_sync_table and set I_CLOCKDIV.
+ * reset parameters
*/
- switch (data->clock) {
- case CLOCK_4:
- /* If data->clock is CLOCK_4, then select 40M sync table. */
- data->synct = nsp32_sync_table_40M;
- data->syncnum = nsp32_table_40M_num;
- break;
- case CLOCK_2:
- /* If data->clock is CLOCK_2, then select 20M sync table. */
- data->synct = nsp32_sync_table_20M;
- data->syncnum = nsp32_table_20M_num;
- break;
- case PCICLK:
- /* If data->clock is PCICLK, then select pci sync table. */
- data->synct = nsp32_sync_table_pci;
- data->syncnum = nsp32_table_pci_num;
- break;
- default:
- nsp32_msg(KERN_WARNING,
- "Invalid clock div is selected, set CLOCK_4.");
- /* Use default value CLOCK_4 */
- data->clock = CLOCK_4;
- data->synct = nsp32_sync_table_40M;
- data->syncnum = nsp32_table_40M_num;
- }
+ data->cur_lunt->SCpnt = NULL;
+ data->cur_lunt = NULL;
+ data->cur_target = NULL;
+ data->CurrentSC = NULL;
+}
- /*
- * setup nsp32_lunt
- */
- data->lunt_list = (struct nsp32_lunt *)
- kmalloc(sizeof(struct nsp32_lunt) * MAX_TARGET * MAX_LUN,
- GFP_KERNEL);
- if (data->lunt_list == NULL) {
- nsp32_msg(KERN_ERR, "cannot allocate LUN memory");
- goto scsi_unregister;
- }
- nsp32_dbg(NSP32_DEBUG_REGISTER, "0x%x 0x%x",
- data->lunt_list, sizeof(struct nsp32_lunt)*MAX_TARGET*MAX_LUN);
- /*
- * setup DMA
- */
- if (pci_set_dma_mask(data->Pci, 0xffffffffUL)) {
- nsp32_msg (KERN_ERR, "failed to set PCI DMA mask");
- goto kfree_lunt;
- }
+/*
+ * Bus Free Occur
+ *
+ * Current Phase is BUSFREE. AutoSCSI is automatically execute BUSFREE phase
+ * with ACK reply when below condition is matched:
+ * MsgIn 00: Command Complete.
+ * MsgIn 02: Save Data Pointer.
+ * MsgIn 04: Diconnect.
+ * In other case, unexpected BUSFREE is detected.
+ */
+static int nsp32_busfree_occur(Scsi_Cmnd *SCpnt, unsigned short execph)
+{
+ nsp32_hw_data *data = (nsp32_hw_data *)SCpnt->device->host->hostdata;
+ unsigned int base = SCpnt->device->host->io_port;
- /*
- * allocate autoparam DMA resource.
- */
- data->autoparam = pci_alloc_consistent(data->Pci, AUTOPARAM_SIZE, &data->apaddr);
- if (data->autoparam == NULL) {
- nsp32_msg(KERN_ERR, "failed to allocate DMA memory");
- goto kfree_lunt;
- }
+ nsp32_dbg(NSP32_DEBUG_BUSFREE, "enter execph=0x%x", execph);
+ show_autophase(execph);
+
+ nsp32_write4(base, BM_CNT, 0);
+ nsp32_write2(base, TRANSFER_CONTROL, 0);
/*
- * allocate scatter-gather DMA resource.
+ * MsgIn 02: Save Data Pointer
+ *
+ * VALID:
+ * Save Data Pointer is received. Adjust pointer.
+ *
+ * NO-VALID:
+ * SCSI-3 says if Save Data Pointer is not received, then we restart
+ * processing and we can't adjust any SCSI data pointer in next data
+ * phase.
*/
- data->sg_list = pci_alloc_consistent(data->Pci,
- (sizeof(struct nsp32_sgtable) * NSP_SG_SIZE * MAX_TARGET * MAX_LUN),
- &data->sgaddr);
- if (data->sg_list == NULL) {
- nsp32_msg(KERN_ERR, "failed to allocate DMA memory");
- goto free_autoparam;
- }
+ if (execph & MSGIN_02_VALID) {
+ nsp32_dbg(NSP32_DEBUG_BUSFREE, "MsgIn02_Valid");
- for (i=0; i<MAX_TARGET; i++) {
- for (j=0; j<MAX_LUN; j++) {
- data->lunt[i][j] = data->lunt_list + (i * MAX_LUN + j);
- }
- }
+ /*
+ * Check sack_cnt/saved_sack_cnt, then adjust sg table if
+ * needed.
+ */
+ if (!(execph & MSGIN_00_VALID) &&
+ ((execph & DATA_IN_PHASE) || (execph & DATA_OUT_PHASE))) {
+ unsigned int sacklen, s_sacklen;
- for (i=0; i<MAX_TARGET; i++) {
- for (j=0; j<MAX_LUN; j++) {
- struct nsp32_lunt *lp = data->lunt[i][j];
- lp->sglun = (struct nsp32_sglun *)
- (data->sg_list + (i * MAX_LUN + j));
- lp->sglun_paddr = data->sgaddr +
- (long)((i * MAX_LUN + j)
- * sizeof(struct nsp32_sglun));
- lp->SCpnt = NULL;
- lp->save_datp = 0;
- lp->msgin03 = FALSE;
- lp->sg_num = 0;
- lp->cur_entry = 0;
- }
- }
+ /*
+ * Read SACK count and SAVEDSACK count, then compare.
+ */
+ sacklen = nsp32_read4(base, SACK_CNT );
+ s_sacklen = nsp32_read4(base, SAVED_SACK_CNT);
- /*
- * setup target
- */
- for (i=0; i<MAX_TARGET; i++) {
- struct nsp32_target *target = &data->target[i];
+ /*
+ * If SAVEDSACKCNT == 0, it means SavedDataPointer is
+ * come after data transfering.
+ */
+ if (s_sacklen > 0) {
+ /*
+ * Comparing between sack and savedsack to
+ * check the condition of AutoMsgIn03.
+ *
+ * If they are same, set msgin03 == TRUE,
+ * COMMANDCONTROL_AUTO_MSGIN_03 is enabled at
+ * reselection. On the other hand, if they
+ * aren't same, set msgin03 == FALSE, and
+ * COMMANDCONTROL_AUTO_MSGIN_03 is disabled at
+ * reselection.
+ */
+ if (sacklen != s_sacklen) {
+ data->cur_lunt->msgin03 = FALSE;
+ } else {
+ data->cur_lunt->msgin03 = TRUE;
+ }
- target->limit_entry = 0;
- target->sync_flag = 0;
- nsp32_set_async(data, target);
+ nsp32_adjust_busfree(SCpnt, s_sacklen);
+ }
+ }
+
+ /* This value has not substitude with valid value yet... */
+ //data->cur_lunt->save_datp = data->cur_datp;
+ } else {
+ /*
+ * no processing.
+ */
+ }
+
+ if (execph & MSGIN_03_VALID) {
+ /* MsgIn03 was valid to be processed. No need processing. */
}
/*
- * EEPROM check
+ * target SDTR check
*/
- ret = nsp32_getprom_param(data);
- if (ret == FALSE) {
- data->resettime = 3; /* default 3 */
+ if (data->cur_target->sync_flag & SDTR_INITIATOR) {
+ /*
+ * SDTR negotiation pulled by the initiator has not
+ * finished yet. Fall back to ASYNC mode.
+ */
+ nsp32_set_async(data, data->cur_target);
+ data->cur_target->sync_flag &= ~SDTR_INITIATOR;
+ data->cur_target->sync_flag |= SDTR_DONE;
+ } else if (data->cur_target->sync_flag & SDTR_TARGET) {
+ /*
+ * SDTR negotiation pulled by the target has been
+ * negotiating.
+ */
+ if (execph & (MSGIN_00_VALID | MSGIN_04_VALID)) {
+ /*
+ * If valid message is received, then
+ * negotiation is succeeded.
+ */
+ } else {
+ /*
+ * On the contrary, if unexpected bus free is
+ * occurred, then negotiation is failed. Fall
+ * back to ASYNC mode.
+ */
+ nsp32_set_async(data, data->cur_target);
+ }
+ data->cur_target->sync_flag &= ~SDTR_TARGET;
+ data->cur_target->sync_flag |= SDTR_DONE;
}
/*
- * setup HBA
+ * It is always ensured by SCSI standard that initiator
+ * switches into Bus Free Phase after
+ * receiving message 00 (Command Complete), 04 (Disconnect).
+ * It's the reason that processing here is valid.
*/
- nsp32hw_init(host);
-
- snprintf(data->info_str, sizeof(data->info_str),
- "NinjaSCSI-32Bi/UDE: irq %d, io 0x%lx+0x%x",
- host->irq, host->io_port, host->n_io_port);
+ if (execph & MSGIN_00_VALID) {
+ /* MsgIn 00: Command Complete */
+ nsp32_dbg(NSP32_DEBUG_BUSFREE, "command complete");
- /*
- * SCSI bus reset
- *
- * Note: It's important to reset SCSI bus in initialization phase.
- * NinjaSCSI-32Bi/UDE HBA EEPROM seems to exchange SDTR when system is
- * coming up, so SCSI devices connected to HBA is set as
- * un-asynchronous mode. It brings the merit that this HBA is
- * ready to start synchronous transfer without any preparation,
- * but we are difficult to control transfer speed. In addition,
- * it prevents device transfer speed from effecting EEPROM start-up
- * SDTR. NinjaSCSI-32Bi/UDE has the feature if EEPROM is set as Auto
- * Mode, then FAST-10M is selected when SCSI devices are connected
- * same or more than 4 devices. It should be avoided depending on
- * this specification Thus, resetting the SCSI bus restores all
- * connected SCSI devices to asynchronous mode, then this driver
- * put SDTR safely later, and we can control all SCSI device
- * transfer mode.
- */
- nsp32_do_bus_reset(data);
+ SCpnt->SCp.Status = nsp32_read1(base, SCSI_CSB_IN);
+ SCpnt->SCp.Message = 0;
+ nsp32_dbg(NSP32_DEBUG_BUSFREE,
+ "normal end stat=0x%x resid=0x%x\n",
+ SCpnt->SCp.Status, SCpnt->resid);
+ SCpnt->result = (DID_OK << 16) |
+ (SCpnt->SCp.Message << 8) |
+ (SCpnt->SCp.Status << 0);
+ nsp32_scsi_done(SCpnt);
+ /* All operation is done */
+ return TRUE;
+ } else if (execph & MSGIN_04_VALID) {
+ /* MsgIn 04: Disconnect */
+ SCpnt->SCp.Status = nsp32_read1(base, SCSI_CSB_IN);
+ SCpnt->SCp.Message = 4;
+
+ nsp32_dbg(NSP32_DEBUG_BUSFREE, "disconnect");
+ return TRUE;
+ } else {
+ /* Unexpected bus free */
+ nsp32_msg(KERN_WARNING, "unexpected bus free occurred");
- ret = request_irq(host->irq, do_nsp32_isr, SA_SHIRQ, "nsp32", data);
- if (ret < 0) {
- nsp32_msg(KERN_ERR, "Unable to allocate IRQ for NSP32 "
- "SCSI PCI controller. Interrupt: %d\n", host->irq);
- goto free_sg_list;
+ /* DID_ERROR? */
+ //SCpnt->result = (DID_OK << 16) | (SCpnt->SCp.Message << 8) | (SCpnt->SCp.Status << 0);
+ SCpnt->result = DID_ERROR << 16;
+ nsp32_scsi_done(SCpnt);
+ return TRUE;
}
+ return FALSE;
+}
- /*
- * PCI IO register
- */
- if(!request_region(host->io_port, host->n_io_port, "nsp32")) {
- nsp32_msg(KERN_ERR,
- "I/O region 0x%lx+0x%lx is already used",
- data->BaseAddress, data->length);
- goto free_irq;
- }
- scsi_add_host(host, &pdev->dev); /* XXX handle failure */
- scsi_scan_host(host);
- pci_set_drvdata(pdev, host);
- return 0;
+/*
+ * nsp32_adjust_busfree - adjusting SG table
+ *
+ * Note: This driver adjust the SG table using SCSI ACK
+ * counter instead of BMCNT counter!
+ */
+static void nsp32_adjust_busfree(Scsi_Cmnd *SCpnt, unsigned int s_sacklen)
+{
+ nsp32_hw_data *data = (nsp32_hw_data *)SCpnt->device->host->hostdata;
+ int old_entry = data->cur_entry;
+ int new_entry;
+ int sg_num = data->cur_lunt->sg_num;
+ nsp32_sgtable *sgt = data->cur_lunt->sglun->sgt;
+ unsigned int restlen, sentlen;
+ u32_le len, addr;
- free_irq:
- free_irq(host->irq, data);
+ nsp32_dbg(NSP32_DEBUG_SGLIST, "old resid=0x%x", SCpnt->resid);
- free_autoparam:
- pci_free_consistent(data->Pci, AUTOPARAM_SIZE, data->autoparam, data->apaddr);
-
- free_sg_list:
- pci_free_consistent(data->Pci,
- (sizeof(struct nsp32_sgtable) * NSP_SG_SIZE * MAX_TARGET * MAX_LUN),
- data->sg_list, data->sgaddr);
-
- kfree_lunt:
- kfree(data->lunt_list);
+ /* adjust saved SACK count with 4 byte start address boundary */
+ s_sacklen -= le32_to_cpu(sgt[old_entry].addr) & 3;
- scsi_unregister:
- scsi_host_put(host);
-
- err:
- return 1;
-}
+ /*
+ * calculate new_entry from sack count and each sgt[].len
+ * calculate the byte which is intent to send
+ */
+ sentlen = 0;
+ for (new_entry = old_entry; new_entry < sg_num; new_entry++) {
+ sentlen += (le32_to_cpu(sgt[new_entry].len) & ~SGTEND);
+ if (sentlen > s_sacklen) {
+ break;
+ }
+ }
-static const char *nsp32_info(struct Scsi_Host *shpnt)
-{
- nsp32_hw_data *data = (nsp32_hw_data *)shpnt->hostdata;
+ /* all sgt is processed */
+ if (new_entry == sg_num) {
+ goto last;
+ }
- return data->info_str;
-}
+ if (sentlen == s_sacklen) {
+ /* XXX: confirm it's ok or not */
+ /* In this case, it's ok because we are at
+ the head element of the sg. restlen is correctly calculated. */
+ }
+ /* calculate the rest length for transfering */
+ restlen = sentlen - s_sacklen;
-static int nsp32_eh_abort(Scsi_Cmnd *SCpnt)
-{
- nsp32_hw_data *data = (nsp32_hw_data *)SCpnt->device->host->hostdata;
- unsigned int base = data->BaseAddress;
+ /* update adjusting current SG table entry */
+ len = le32_to_cpu(sgt[new_entry].len);
+ addr = le32_to_cpu(sgt[new_entry].addr);
+ addr += (len - restlen);
+ sgt[new_entry].addr = cpu_to_le32(addr);
+ sgt[new_entry].len = cpu_to_le32(restlen);
- nsp32_msg(KERN_WARNING, "abort");
+ /* set cur_entry with new_entry */
+ data->cur_entry = new_entry;
+
+ return;
- if (data->curlunt->SCpnt == NULL) {
- return (FAILED);
+ last:
+ if (SCpnt->resid < sentlen) {
+ nsp32_msg(KERN_ERR, "resid underflow");
}
- if (data->curtarget->sync_flag & (SDTR_INITIATOR | SDTR_TARGET)) {
- /* reset SDTR negotiation */
- data->curtarget->sync_flag = 0;
- }
+ SCpnt->resid -= sentlen;
+ nsp32_dbg(NSP32_DEBUG_SGLIST, "new resid=0x%x", SCpnt->resid);
- nsp32_write2(base, TRANSFER_CONTROL, 0);
- nsp32_write2(base, BM_CNT, 0);
+ /* update hostdata and lun */
- return (FAILED);
+ return;
}
-static int nsp32_eh_bus_reset(Scsi_Cmnd *SCpnt)
-{
- nsp32_hw_data *data = (nsp32_hw_data *)SCpnt->device->host->hostdata;
- unsigned int base = data->BaseAddress;
-
- nsp32_msg(KERN_INFO, "Bus Reset");
- nsp32_dbg(NSP32_DEBUG_BUSRESET, "SCpnt=0x%x", SCpnt);
-
- nsp32_write2(base, IRQ_CONTROL, IRQ_CONTROL_ALL_IRQ_MASK);
- nsp32_do_bus_reset(data);
- nsp32_write2(base, IRQ_CONTROL, 0);
-
- return SUCCESS; /* SCSI bus reset is succeeded at any time. */
-}
-static void nsp32_do_bus_reset(nsp32_hw_data *data)
+/*
+ * It's called MsgOut phase occur.
+ * NinjaSCSI-32Bi/UDE automatically processes up to 3 messages in
+ * message out phase. It, however, has more than 3 messages,
+ * HBA creates the interrupt and we have to process by hand.
+ */
+static void nsp32_msgout_occur(Scsi_Cmnd *SCpnt)
{
- unsigned int base = data->BaseAddress;
- unsigned short intrdat;
+ nsp32_hw_data *data = (nsp32_hw_data *)SCpnt->device->host->hostdata;
+ unsigned int base = SCpnt->device->host->io_port;
+ //unsigned short command;
+ long new_sgtp;
int i;
+
+ nsp32_dbg(NSP32_DEBUG_MSGOUTOCCUR,
+ "enter: msgout_len: 0x%x", data->msgout_len);
/*
- * stop all transfer
- * clear TRANSFERCONTROL_BM_START
- * clear counter
+ * If MsgOut phase is occurred without having any
+ * message, then No_Operation is sent (SCSI-2).
*/
- nsp32_write2(base, TRANSFER_CONTROL, 0);
- nsp32_write4(base, BM_CNT, 0);
- nsp32_write4(base, CLR_COUNTER, CLRCOUNTER_ALLMASK);
+ if (data->msgout_len == 0) {
+ nsp32_build_nop(SCpnt);
+ }
/*
- * fall back to asynchronous transfer mode
- * initialize SDTR negotiation flag
+ * Set SGTP ADDR current entry for restarting AUTOSCSI,
+ * because SGTP is incremented next point.
+ * There is few statement in the specification...
*/
- for (i=0; i<MAX_TARGET; i++) {
- struct nsp32_target *target = &data->target[i];
-
- target->sync_flag = 0;
- nsp32_set_async(data, target);
- }
+ new_sgtp = data->cur_lunt->sglun_paddr +
+ (data->cur_lunt->cur_entry * sizeof(nsp32_sgtable));
/*
- * reset SCSI bus
+ * send messages
*/
- nsp32_write1(base, SCSI_BUS_CONTROL, BUSCTL_RST);
- udelay(RESET_HOLD_TIME);
- nsp32_write1(base, SCSI_BUS_CONTROL, 0);
- for(i = 0; i < 5; i++) {
- intrdat = nsp32_read2(base, IRQ_STATUS); /* dummy read */
- nsp32_dbg(NSP32_DEBUG_BUSRESET, "irq:1: 0x%x", intrdat);
- }
+ for (i = 0; i < data->msgout_len; i++) {
+ nsp32_dbg(NSP32_DEBUG_MSGOUTOCCUR,
+ "%d : 0x%x", i, data->msgoutbuf[i]);
- data->CurrentSC = NULL;
-}
+ /*
+ * Check REQ is asserted.
+ */
+ nsp32_wait_req(data, ASSERT);
-static int nsp32_eh_host_reset(Scsi_Cmnd *SCpnt)
-{
- struct Scsi_Host *host = SCpnt->device->host;
- nsp32_hw_data *data = (nsp32_hw_data *)host->hostdata;
- unsigned int base = data->BaseAddress;
+ if (i == (data->msgout_len - 1)) {
+ /*
+ * If the last message, set the AutoSCSI restart
+ * before send back the ack message. AutoSCSI
+ * restart automatically negate ATN signal.
+ */
+ //command = (AUTO_MSGIN_00_OR_04 | AUTO_MSGIN_02);
+ //nsp32_restart_autoscsi(SCpnt, command);
+ nsp32_write2(base, COMMAND_CONTROL,
+ (CLEAR_CDB_FIFO_POINTER |
+ AUTO_COMMAND_PHASE |
+ AUTOSCSI_RESTART |
+ AUTO_MSGIN_00_OR_04 |
+ AUTO_MSGIN_02 ));
+ }
+ /*
+ * Write data with SACK, then wait sack is
+ * automatically negated.
+ */
+ nsp32_write1(base, SCSI_DATA_WITH_ACK, data->msgoutbuf[i]);
+ nsp32_wait_sack(data, NEGATE);
- nsp32_msg(KERN_INFO, "Host Reset");
- nsp32_dbg(NSP32_DEBUG_BUSRESET, "SCpnt=0x%x", SCpnt);
+ nsp32_dbg(NSP32_DEBUG_MSGOUTOCCUR, "bus: 0x%x\n",
+ nsp32_read1(base, SCSI_BUS_MONITOR));
+ };
- nsp32hw_init(host);
- nsp32_write2(base, IRQ_CONTROL, IRQ_CONTROL_ALL_IRQ_MASK);
- nsp32_do_bus_reset(data);
- nsp32_write2(base, IRQ_CONTROL, 0);
+ data->msgout_len = 0;
- return SUCCESS; /* Host reset is succeeded at any time. */
+ nsp32_dbg(NSP32_DEBUG_MSGOUTOCCUR, "exit");
}
/*
- * PCI/Cardbus probe/remove routine
+ * Restart AutoSCSI
+ *
+ * Note: Restarting AutoSCSI needs set:
+ * SYNC_REG, ACK_WIDTH, SGT_ADR, TRANSFER_CONTROL
*/
-static int __devinit nsp32_probe(struct pci_dev *pdev, const struct pci_device_id *id)
+static void nsp32_restart_autoscsi(Scsi_Cmnd *SCpnt, unsigned short command)
{
- int ret;
- nsp32_hw_data *data = &nsp32_data_base;
+ nsp32_hw_data *data = (nsp32_hw_data *)SCpnt->device->host->hostdata;
+ unsigned int base = data->BaseAddress;
+ unsigned short transfer = 0;
- nsp32_dbg(NSP32_DEBUG_REGISTER, "enter");
+ nsp32_dbg(NSP32_DEBUG_RESTART, "enter");
- ret = pci_enable_device(pdev);
- if (ret) {
- nsp32_msg(KERN_ERR, "failed to enable pci device");
- return ret;
+ if (data->cur_target == NULL || data->cur_lunt == NULL) {
+ nsp32_msg(KERN_ERR, "Target or Lun is invalid");
}
- data->Pci = pdev;
- data->pci_devid = id;
- data->IrqNumber = pdev->irq;
- data->BaseAddress = pci_resource_start(pdev, 0);
- data->NumAddress = pci_resource_len(pdev, 0);
- data->MmioAddress = (unsigned long)ioremap_nocache(
- pci_resource_start(pdev, 1), pci_resource_len(pdev, 1));
+ /*
+ * set SYNC_REG
+ * Don't set BM_START_ADR before setting this register.
+ */
+ nsp32_write1(base, SYNC_REG, data->cur_target->syncreg);
- pci_set_master(pdev);
+ /*
+ * set ACKWIDTH
+ */
+ nsp32_write1(base, ACK_WIDTH, data->cur_target->ackwidth);
- ret = nsp32_detect(pdev);
+ /*
+ * set SREQ hazard killer sampling rate
+ */
+ nsp32_write1(base, SREQ_SMPL_RATE, data->cur_target->sample_reg);
- nsp32_msg(KERN_INFO, "nsp32 irq: %i mmio: 0x%lx slot: %s model: %s",
- pdev->irq, data->MmioAddress, pci_name(pdev),
- nsp32_model[id->driver_data]);
+ /*
+ * set SGT ADDR (physical address)
+ */
+ nsp32_write4(base, SGT_ADR, data->cur_lunt->sglun_paddr);
- nsp32_dbg(NSP32_DEBUG_REGISTER, "exit");
+ /*
+ * set TRANSFER CONTROL REG
+ */
+ transfer = 0;
+ transfer |= (TRANSFER_GO | ALL_COUNTER_CLR);
+ if (data->trans_method & NSP32_TRANSFER_BUSMASTER) {
+ if (SCpnt->request_bufflen > 0) {
+ transfer |= BM_START;
+ }
+ } else if (data->trans_method & NSP32_TRANSFER_MMIO) {
+ transfer |= CB_MMIO_MODE;
+ } else if (data->trans_method & NSP32_TRANSFER_PIO) {
+ transfer |= CB_IO_MODE;
+ }
+ nsp32_write2(base, TRANSFER_CONTROL, transfer);
- return ret;
+ /*
+ * restart AutoSCSI
+ *
+ * TODO: COMMANDCONTROL_AUTO_COMMAND_PHASE is needed ?
+ */
+ command |= (CLEAR_CDB_FIFO_POINTER |
+ AUTO_COMMAND_PHASE |
+ AUTOSCSI_RESTART );
+ nsp32_write2(base, COMMAND_CONTROL, command);
+
+ nsp32_dbg(NSP32_DEBUG_RESTART, "exit");
}
-static void __devexit nsp32_remove(struct pci_dev *pdev)
+
+/*
+ * cannot run automatically message in occur
+ */
+static void nsp32_msgin_occur(Scsi_Cmnd *SCpnt,
+ unsigned long irq_status,
+ unsigned short execph)
{
- struct Scsi_Host *shpnt = pci_get_drvdata(pdev);
- nsp32_hw_data *data = (nsp32_hw_data *)shpnt->hostdata;
+ nsp32_hw_data *data = (nsp32_hw_data *)SCpnt->device->host->hostdata;
+ unsigned int base = SCpnt->device->host->io_port;
+ unsigned char msg;
+ unsigned char msgtype;
+ unsigned char newlun;
+ unsigned short command = 0;
+ int msgclear = TRUE;
+ long new_sgtp;
+ int ret;
- kfree(data->lunt_list);
- pci_free_consistent(data->Pci, AUTOPARAM_SIZE,
- data->autoparam, data->apaddr);
- pci_free_consistent(data->Pci,
- (sizeof(struct nsp32_sgtable) * NSP_SG_SIZE*MAX_TARGET*MAX_LUN),
- data->sg_list, data->sgaddr);
- free_irq(shpnt->irq, data);
- release_region(shpnt->io_port, shpnt->n_io_port);
- iounmap((void *)(data->MmioAddress));
-}
-
-static struct pci_device_id nsp32_pci_table[] = {
- {
- .vendor = PCI_VENDOR_ID_IODATA,
- .device = PCI_DEVICE_ID_NINJASCSI_32BI_CBSC_II,
- .subvendor = PCI_ANY_ID,
- .subdevice = PCI_ANY_ID,
- .driver_data = MODEL_IODATA,
- },
- {
- .vendor = PCI_VENDOR_ID_WORKBIT,
- .device = PCI_DEVICE_ID_NINJASCSI_32BI_KME,
- .subvendor = PCI_ANY_ID,
- .subdevice = PCI_ANY_ID,
- .driver_data = MODEL_KME,
- },
- {
- .vendor = PCI_VENDOR_ID_WORKBIT,
- .device = PCI_DEVICE_ID_NINJASCSI_32BI_WBT,
- .subvendor = PCI_ANY_ID,
- .subdevice = PCI_ANY_ID,
- .driver_data = MODEL_WORKBIT,
- },
- {
- .vendor = PCI_VENDOR_ID_WORKBIT,
- .device = PCI_DEVICE_ID_WORKBIT_STANDARD,
- .subvendor = PCI_ANY_ID,
- .subdevice = PCI_ANY_ID,
- .driver_data = MODEL_PCI_WORKBIT,
- },
- {
- .vendor = PCI_VENDOR_ID_WORKBIT,
- .device = PCI_DEVICE_ID_NINJASCSI_32BI_LOGITEC,
- .subvendor = PCI_ANY_ID,
- .subdevice = PCI_ANY_ID,
- .driver_data = MODEL_EXT_ROM,
- },
- {
- .vendor = PCI_VENDOR_ID_WORKBIT,
- .device = PCI_DEVICE_ID_NINJASCSI_32BIB_LOGITEC,
- .subvendor = PCI_ANY_ID,
- .subdevice = PCI_ANY_ID,
- .driver_data = MODEL_PCI_LOGITEC,
- },
- {
- .vendor = PCI_VENDOR_ID_WORKBIT,
- .device = PCI_DEVICE_ID_NINJASCSI_32UDE_MELCO,
- .subvendor = PCI_ANY_ID,
- .subdevice = PCI_ANY_ID,
- .driver_data = MODEL_PCI_MELCO,
- },
- {0,0,},
-};
-MODULE_DEVICE_TABLE(pci, nsp32_pci_table);
-
-static struct pci_driver nsp32_driver = {
- .name = "nsp32",
- .id_table = nsp32_pci_table,
- .probe = nsp32_probe,
- .remove = nsp32_remove,
-#ifdef CONFIG_PM
-/* .suspend = nsp32_suspend,*/
-/* .resume = nsp32_resume,*/
-#endif
-};
-
-static int __init init_nsp32(void) {
- return pci_module_init(&nsp32_driver);
-}
-
-static void __exit exit_nsp32(void) {
- pci_unregister_driver(&nsp32_driver);
-}
-
-module_init(init_nsp32);
-module_exit(exit_nsp32);
-
-
-/*
- * Reset parameters and call scsi_done for data->curlunt.
- * Be careful setting SCpnt->result = DID_* before calling this function.
- */
-static void nsp32_scsi_done(nsp32_hw_data *data, Scsi_Cmnd *SCpnt)
-{
- unsigned int base = data->BaseAddress;
+ /*
+ * read first message
+ * Use SCSIDATA_W_ACK instead of SCSIDATAIN, because the procedure
+ * of Message-In have to be processed before sending back SCSI ACK.
+ */
+ msg = nsp32_read1(base, SCSI_DATA_IN);
+ data->msginbuf[(unsigned char)data->msgin_len] = msg;
+ msgtype = data->msginbuf[0];
+ nsp32_dbg(NSP32_DEBUG_MSGINOCCUR,
+ "enter: msglen: 0x%x msgin: 0x%x msgtype: 0x%x",
+ data->msgin_len, msg, msgtype);
/*
- * unmap pci
+ * TODO: We need checking whether bus phase is message in?
*/
- if (SCpnt->request_bufflen == 0) {
- goto skip;
- }
-
- if (SCpnt->use_sg) {
- pci_unmap_sg(data->Pci,
- (struct scatterlist *)SCpnt->buffer,
- SCpnt->use_sg,
- scsi_to_pci_dma_dir(SCpnt->sc_data_direction));
- } else {
- pci_unmap_single(data->Pci,
- (u32)SCpnt->SCp.have_data_in,
- SCpnt->request_bufflen,
- scsi_to_pci_dma_dir(SCpnt->sc_data_direction));
- }
- skip:
/*
- * clear TRANSFERCONTROL_BM_START
+ * assert SCSI ACK
*/
- nsp32_write2(base, TRANSFER_CONTROL, 0);
- nsp32_write4(base, BM_CNT, 0);
+ nsp32_sack_assert(data);
/*
- * call scsi_done
+ * processing IDENTIFY
*/
- (*SCpnt->scsi_done)(SCpnt);
+ if (msgtype & 0x80) {
+ if (!(irq_status & IRQSTATUS_RESELECT_OCCUER)) {
+ /* Invalid (non reselect) phase */
+ goto reject;
+ }
+ newlun = msgtype & 0x1f; /* TODO: SPI-3 compliant? */
+ ret = nsp32_reselection(SCpnt, newlun);
+ if (ret == TRUE) {
+ goto restart;
+ } else {
+ goto reject;
+ }
+ }
+
/*
- * reset parameters
+ * processing messages except for IDENTIFY
+ *
+ * TODO: Messages are all SCSI-2 terminology. SCSI-3 compliance is TODO.
*/
- data->curlunt->SCpnt = NULL;
- data->curlunt = NULL;
- data->curtarget = NULL;
- data->CurrentSC = NULL;
-}
-
+ switch (msgtype) {
+ /*
+ * 1-byte message
+ */
+ case COMMAND_COMPLETE:
+ case DISCONNECT:
+ /*
+ * These messages should not be occurred.
+ * They should be processed on AutoSCSI sequencer.
+ */
+ nsp32_msg(KERN_WARNING,
+ "unexpected message of AutoSCSI MsgIn: 0x%x", msg);
+ break;
+
+ case RESTORE_POINTERS:
+ /*
+ * AutoMsgIn03 is disabled, and HBA gets this message.
+ */
-/*
- * Bus Free Occur
- *
- * Current Phase is BUSFREE. AutoSCSI is automatically execute BUSFREE phase
- * with ACK reply when below condition is matched:
- * MsgIn 00: Command Complete.
- * MsgIn 02: Save Data Pointer.
- * MsgIn 04: Diconnect.
- * In other case, unexpected BUSFREE is detected.
- */
-static int nsp32_busfree_occur(nsp32_hw_data *data, unsigned short execph)
-{
- Scsi_Cmnd *SCpnt = data->curlunt->SCpnt;
- unsigned int base = data->BaseAddress;
+ if ((execph & DATA_IN_PHASE) || (execph & DATA_OUT_PHASE)) {
+ unsigned int s_sacklen;
- nsp32_dbg(NSP32_DEBUG_BUSFREE, "enter");
+ s_sacklen = nsp32_read4(base, SAVED_SACK_CNT);
+ if ((execph & MSGIN_02_VALID) && (s_sacklen > 0)) {
+ nsp32_adjust_busfree(SCpnt, s_sacklen);
+ } else {
+ /* No need to rewrite SGT */
+ }
+ }
+ data->cur_lunt->msgin03 = FALSE;
- nsp32_write4(base, BM_CNT, 0);
- nsp32_write2(base, TRANSFER_CONTROL, 0);
+ /* Update with the new value */
- /*
- * MsgIn 02: Save Data Pointer
- *
- * VALID:
- * Save Data Pointer is received. Adjust pointer.
- *
- * NO-VALID:
- * SCSI-3 says if Save Data Pointer is not received, then we restart
- * processing and we can't adjust any SCSI data pointer in next data
- * phase.
- */
- if (execph & MSGIN_02_VALID) {
- nsp32_dbg(NSP32_DEBUG_BUSFREE, "MsgIn02_Valid");
+ /* reset SACK/SavedACK counter (or ALL clear?) */
+ nsp32_write4(base, CLR_COUNTER, CLRCOUNTER_ALLMASK);
/*
- * Check sack_cnt/saved_sack_cnt, then adjust sg table if
- * needed.
+ * set new sg pointer
*/
- if (!(execph & MSGIN_00_VALID) &&
- ((execph & DATA_IN_PHASE) || (execph & DATA_OUT_PHASE))) {
- unsigned int sacklen, s_sacklen;
+ new_sgtp = data->cur_lunt->sglun_paddr +
+ (data->cur_lunt->cur_entry * sizeof(nsp32_sgtable));
+ nsp32_write4(base, SGT_ADR, new_sgtp);
- /*
- * Read SACK count and SAVEDSACK count, then compare.
- */
- sacklen = nsp32_read4(base, SACK_CNT);
- s_sacklen = nsp32_read4(base, SAVED_SACK_CNT);
+ break;
+ case SAVE_POINTERS:
+ /*
+ * These messages should not be occurred.
+ * They should be processed on AutoSCSI sequencer.
+ */
+ nsp32_msg (KERN_WARNING,
+ "unexpected message of AutoSCSI MsgIn: SAVE_POINTERS");
+
+ break;
+
+ case MESSAGE_REJECT:
+ /* If previous message_out is sending SDTR, and get
+ message_reject from target, SDTR negotiation is failed */
+ if (data->cur_target->sync_flag &
+ (SDTR_INITIATOR | SDTR_TARGET)) {
/*
- * If SAVEDSACKCNT == 0, it means SavedDataPointer is
- * come after data transfering.
+ * Current target is negotiating SDTR, but it's
+ * failed. Fall back to async transfer mode, and set
+ * SDTR_DONE.
*/
- if (s_sacklen > 0) {
- /*
- * Comparing between sack and savedsack to
- * check the condition of AutoMsgIn03.
- *
- * If they are same, set msgin03 == TRUE,
- * COMMANDCONTROL_AUTO_MSGIN_03 is enabled at
- * reselection. On the other hand, if they
- * aren't same, set msgin03 == FALSE, and
- * COMMANDCONTROL_AUTO_MSGIN_03 is disabled at
- * reselection.
- */
- if (sacklen != s_sacklen) {
- data->curlunt->msgin03 = FALSE;
- } else {
- data->curlunt->msgin03 = TRUE;
- }
+ nsp32_set_async(data, data->cur_target);
+ data->cur_target->sync_flag &= ~SDTR_INITIATOR;
+ data->cur_target->sync_flag |= SDTR_DONE;
- nsp32_adjust_busfree(data, s_sacklen);
- }
}
+ break;
- /* This value has not substitude with valid value yet... */
- //data->curlunt->save_datp = data->cur_datp;
- } else {
- /*
- * no processing.
- */
- }
-
- if (execph & MSGIN_03_VALID) {
- /* MsgIn03 was valid to be processed. No need processing. */
- }
+ case LINKED_CMD_COMPLETE:
+ case LINKED_FLG_CMD_COMPLETE:
+ /* queue tag is not supported currently */
+ nsp32_msg (KERN_WARNING,
+ "unsupported message: 0x%x", msgtype);
+ break;
+
+ case INITIATE_RECOVERY:
+ /* staring ECA (Extended Contingent Allegiance) state. */
+ /* This message is declined in SPI2 or later. */
+
+ goto reject;
/*
- * target SDTR check
+ * 2-byte message
*/
- if (data->curtarget->sync_flag & SDTR_INITIATOR) {
- /*
- * SDTR negotiation pulled by the initiator has not
- * finished yet. Fall back to ASYNC mode.
- */
- nsp32_set_async(data, data->curtarget);
- data->curtarget->sync_flag &= ~SDTR_INITIATOR;
- data->curtarget->sync_flag |= SDTR_DONE;
- } else if (data->curtarget->sync_flag & SDTR_TARGET) {
+ case SIMPLE_QUEUE_TAG:
+ case 0x23:
/*
- * SDTR negotiation pulled by the target has been
- * negotiating.
+ * 0x23: Ignore_Wide_Residue is not declared in scsi.h.
+ * No support is needed.
*/
- if (execph & (MSGIN_00_VALID | MSGIN_04_VALID)) {
- /*
- * If valid message is received, then
- * negotiation is succeeded.
+ if (data->msgin_len >= 1) {
+ goto reject;
+ }
+
+ /* current position is 1-byte of 2 byte */
+ msgclear = FALSE;
+
+ break;
+
+ /*
+ * extended message
+ */
+ case EXTENDED_MESSAGE:
+ if (data->msgin_len < 1) {
+ /*
+ * Current position does not reach 2-byte
+ * (2-byte is extended message length).
*/
- } else {
+ msgclear = FALSE;
+ break;
+ }
+
+ if ((data->msginbuf[1] + 1) > data->msgin_len) {
/*
- * On the contrary, if unexpected bus free is
- * occurred, then negotiation is failed. Fall
- * back to ASYNC mode.
+ * Current extended message has msginbuf[1] + 2
+ * (msgin_len starts counting from 0, so buf[1] + 1).
+ * If current message position is not finished,
+ * continue receiving message.
*/
- nsp32_set_async(data, data->curtarget);
+ msgclear = FALSE;
+ break;
}
- data->curtarget->sync_flag &= ~SDTR_TARGET;
- data->curtarget->sync_flag |= SDTR_DONE;
- }
-
- /*
- * It is always ensured by SCSI standard that initiator
- * switches into Bus Free Phase after
- * receiving message 00 (Command Complete), 04 (Disconnect).
- * It's the reason that processing here is valid.
- */
- if (execph & MSGIN_00_VALID) {
- /* MsgIn 00: Command Complete */
- nsp32_dbg(NSP32_DEBUG_BUSFREE, "command complete");
- SCpnt->SCp.Status = nsp32_read1(base, SCSI_CSB_IN);
- SCpnt->SCp.Message = 0;
- nsp32_dbg(NSP32_DEBUG_BUSFREE,
- "normal end stat=0x%x resid=0x%x\n",
- SCpnt->SCp.Status, SCpnt->resid);
- SCpnt->result =
- (DID_OK << 16) | (SCpnt->SCp.Message << 8) | (SCpnt->SCp.Status << 0);
- nsp32_scsi_done(data, SCpnt);
- /* All operation is done */
- return (TRUE);
- } else if (execph & MSGIN_04_VALID) {
- /* MsgIn 04: Disconnect */
- SCpnt->SCp.Status = nsp32_read1(base, SCSI_CSB_IN);
- SCpnt->SCp.Message = 4;
-
- nsp32_dbg(NSP32_DEBUG_BUSFREE, "disconnect");
- return (TRUE);
- } else {
- /* Unexpected bus free */
- nsp32_msg(KERN_WARNING, "unexpected bus free occurred");
-
- /* DID_ERROR? */
- //SCpnt->result = (DID_OK << 16) | (SCpnt->SCp.Message << 8) | (SCpnt->SCp.Status << 0);
- SCpnt->result = DID_ERROR << 16;
- nsp32_scsi_done(data, SCpnt);
- return (TRUE);
- }
- return (FALSE);
-}
-
-
-/*
- * nsp32_adjust_busfree - adjusting SG table
- *
- * Note: This driver adjust the SG table using SCSI ACK
- * counter instead of BMCNT counter!
- */
-static void nsp32_adjust_busfree(nsp32_hw_data *data, unsigned int s_sacklen)
-{
- int old_entry = data->cur_entry;
- int new_entry;
- struct nsp32_sgtable *sgt = data->curlunt->sglun->sgt;
- unsigned int restlen, sentlen;
- int sg_num = data->curlunt->sg_num;
-
- /* adjust saved SACK count with 4 byte start address boundary */
- s_sacklen -= sgt[old_entry].addr & 3;
-
- /*
- * calculate new_entry from sack count and each sgt[].len
- * calculate the byte which is intent to send
- */
- sentlen = 0;
- for (new_entry = old_entry; new_entry < sg_num; new_entry++) {
- sentlen += (sgt[new_entry].len & ~NSP32_SG_END_SGT);
- if (sentlen > s_sacklen) {
+ /*
+ * Reach here means regular length of each type of
+ * extended messages.
+ */
+ switch (data->msginbuf[2]) {
+ case EXTENDED_MODIFY_DATA_POINTER:
+ /* TODO */
+ goto reject; /* not implemented yet */
break;
- }
- }
-
- /* all sgt is processed */
- if (new_entry == sg_num) {
- goto last;
- }
-
- if (sentlen == s_sacklen) {
- /* XXX: confirm it's ok or not */
- /* In this case, it's ok because we are at
- the head element of the sg. restlen is correctly calculated. */
- }
- /* calculate the rest length for transfering */
- restlen = sentlen - s_sacklen;
-
- /* update adjusting current SG table entry */
- sgt[new_entry].addr += (sgt[new_entry].len - restlen);
- sgt[new_entry].len = restlen;
+ case EXTENDED_SDTR:
+ /*
+ * Exchange this message between initiator and target.
+ */
+ if (data->msgin_len != EXTENDED_SDTR_LEN + 1) {
+ /*
+ * received inappropriate message.
+ */
+ goto reject;
+ break;
+ }
- /* set cur_entry with new_entry */
- data->cur_entry = new_entry;
-
- return;
+ nsp32_analyze_sdtr(SCpnt);
- last:
- /* update hostdata and lun */
+ break;
- return;
-}
+ case EXTENDED_EXTENDED_IDENTIFY:
+ /* SCSI-I only, not supported. */
+ goto reject; /* not implemented yet */
+ break;
-/*
- * It's called MsgOut phase occur.
- * NinjaSCSI-32Bi/UDE automatically processes up to 3 messages in
- * message out phase. It, however, has more than 3 messages,
- * HBA creates the interrupt and we have to process by hand.
- */
-static void nsp32_msgout_occur(nsp32_hw_data *data)
-{
- unsigned int base = data->BaseAddress;
- long new_sgtp;
- int i;
-
- nsp32_dbg(NSP32_DEBUG_MSGOUTOCCUR,
- "enter: msgoutlen: 0x%x", data->msgoutlen);
+ case EXTENDED_WDTR:
+ goto reject; /* not implemented yet */
- /*
- * If MsgOut phase is occurred without having any
- * message, then No_Operation is sent (SCSI-2).
- */
- if (data->msgoutlen == 0) {
- nsp32_build_nop(data);
+ break;
+
+ default:
+ goto reject;
+ }
+ break;
+
+ default:
+ goto reject;
}
- /*
- * Set SGTP ADDR current entry for restarting AUTOSCSI,
- * because SGTP is incremented next point.
- * There is few statement in the specification...
- */
- new_sgtp = data->curlunt->sglun_paddr
- + data->curlunt->cur_entry * sizeof(struct nsp32_sgtable);
-
- /*
- * send messages
- */
- for (i=0; i<data->msgoutlen; i++) {
- nsp32_dbg(NSP32_DEBUG_MSGOUTOCCUR,
- "%d : 0x%x", i, data->msgoutbuf[i]);
+ restart:
+ if (msgclear == TRUE) {
+ data->msgin_len = 0;
/*
- * Check REQ is asserted.
+ * If restarting AutoSCSI, but there are some message to out
+ * (msgout_len > 0), set AutoATN, and set SCSIMSGOUT as 0
+ * (MV_VALID = 0). When commandcontrol is written with
+ * AutoSCSI restart, at the same time MsgOutOccur should be
+ * happened (however, such situation is really possible...?).
*/
- nsp32_wait_req(data, ASSERT);
-
- if (i == (data->msgoutlen - 1)) {
- /*
- * If the last message, set the AutoSCSI restart
- * before send back the ack message. AutoSCSI
- * restart automatically negate ATN signal.
- */
- //command = (AUTO_MSGIN_00_OR_04 | AUTO_MSGIN_02);
- //nsp32_restart_autoscsi(data, command);
- nsp32_write2(base, COMMAND_CONTROL,
- (CLEAR_CDB_FIFO_POINTER |
- AUTO_COMMAND_PHASE |
- AUTOSCSI_RESTART |
- AUTO_MSGIN_00_OR_04 |
- AUTO_MSGIN_02 ));
+ if (data->msgout_len > 0) {
+ nsp32_write4(base, SCSI_MSG_OUT, 0);
+ command |= AUTO_ATN;
}
+
/*
- * Write data with SACK, then wait sack is
- * automatically negated.
+ * restart AutoSCSI
+ * If it's failed, COMMANDCONTROL_AUTO_COMMAND_PHASE is needed.
*/
- nsp32_write1(base, SCSI_DATA_WITH_ACK, data->msgoutbuf[i]);
- nsp32_wait_sack(data, NEGATE);
-
- nsp32_dbg(NSP32_DEBUG_MSGOUTOCCUR, "bus: 0x%x\n",
- nsp32_read1(base, SCSI_BUS_MONITOR));
- };
-
- data->msgoutlen = 0;
-
- nsp32_dbg(NSP32_DEBUG_MSGOUTOCCUR, "exit");
-}
-
-/*
- * Restart AutoSCSI
- *
- * Note: Restarting AutoSCSI needs set:
- * SYNC_REG, ACK_WIDTH, SGT_ADR, TRANSFER_CONTROL
- */
-static void nsp32_restart_autoscsi(nsp32_hw_data *data, unsigned short command)
-{
- unsigned int base = data->BaseAddress;
- unsigned short transfer = 0;
- Scsi_Cmnd *SCpnt = data->curlunt->SCpnt;
-
- nsp32_dbg(NSP32_DEBUG_RESTART, "enter");
+ command |= (AUTO_MSGIN_00_OR_04 | AUTO_MSGIN_02);
- if (data->curtarget == NULL || data->curlunt == NULL) {
- nsp32_msg(KERN_ERR, "Target or Lun is invalid");
+ /*
+ * If current msgin03 is TRUE, then flag on.
+ */
+ if (data->cur_lunt->msgin03 == TRUE) {
+ command |= AUTO_MSGIN_03;
+ }
+ data->cur_lunt->msgin03 = FALSE;
+ } else {
+ data->msgin_len++;
}
/*
- * set SYNC_REG
- * Don't set BM_START_ADR before setting this register.
+ * restart AutoSCSI
*/
- nsp32_write1(base, SYNC_REG, data->curtarget->syncreg);
+ nsp32_restart_autoscsi(SCpnt, command);
/*
- * set ACKWIDTH
+ * wait SCSI REQ negate for REQ-ACK handshake
*/
- nsp32_write1(base, ACK_WIDTH, data->curtarget->ackwidth);
+ nsp32_wait_req(data, NEGATE);
/*
- * set SGT ADDR (physical address)
+ * negate SCSI ACK
*/
- nsp32_write4(base, SGT_ADR, data->curlunt->sglun_paddr);
+ nsp32_sack_negate(data);
- /*
- * set TRANSFER CONTROL REG
- */
- transfer = 0;
- transfer |= (TRANSFER_GO | ALL_COUNTER_CLR);
- if (data->trans_method & NSP32_TRANSFER_BUSMASTER) {
- if (SCpnt->request_bufflen > 0) {
- transfer |= BM_START;
- }
- } else if (data->trans_method & NSP32_TRANSFER_MMIO) {
- transfer |= CB_MMIO_MODE;
- } else if (data->trans_method & NSP32_TRANSFER_PIO) {
- transfer |= CB_IO_MODE;
- }
- nsp32_write2(base, TRANSFER_CONTROL, transfer);
+ nsp32_dbg(NSP32_DEBUG_MSGINOCCUR, "exit");
- /*
- * restart AutoSCSI
- *
- * TODO: COMMANDCONTROL_AUTO_COMMAND_PHASE is needed ?
- */
- command |= (CLEAR_CDB_FIFO_POINTER |
- AUTO_COMMAND_PHASE |
- AUTOSCSI_RESTART);
- nsp32_write2(base, COMMAND_CONTROL, command);
+ return;
- nsp32_dbg(NSP32_DEBUG_RESTART, "exit");
-}
+ reject:
+ nsp32_msg(KERN_WARNING,
+ "invalid or unsupported MessageIn, rejected. "
+ "current msg: 0x%x (len: 0x%x), processing msg: 0x%x",
+ msg, data->msgin_len, msgtype);
+ nsp32_build_reject(SCpnt);
+ data->msgin_len = 0;
+ goto restart;
+}
/*
- * cannot run automatically message in occur
+ *
*/
-static void nsp32_msgin_occur(nsp32_hw_data *data, unsigned long irq_status,
- unsigned short execph)
+static void nsp32_analyze_sdtr(Scsi_Cmnd *SCpnt)
{
- unsigned int base = data->BaseAddress;
- unsigned char msg;
- unsigned char msgtype;
- unsigned char newlun;
- unsigned short command = 0;
- int msgclear = TRUE;
- long new_sgtp;
- int ret;
+ nsp32_hw_data *data = (nsp32_hw_data *)SCpnt->device->host->hostdata;
+ nsp32_target *target = data->cur_target;
+ nsp32_sync_table *synct;
+ unsigned char get_period = data->msginbuf[3];
+ unsigned char get_offset = data->msginbuf[4];
+ int entry;
+ int syncnum;
- /*
- * read first message
- * Use SCSIDATA_W_ACK instead of SCSIDATAIN, because the procedure
- * of Message-In have to be processed before sending back SCSI ACK.
- */
- msg = nsp32_read1(base, SCSI_DATA_IN);
- data->msginbuf[(unsigned char)data->msginlen] = msg;
- msgtype = data->msginbuf[0];
- nsp32_dbg(NSP32_DEBUG_MSGINOCCUR,
- "enter: msglen: 0x%x msgin: 0x%x msgtype: 0x%x",
- data->msginlen, msg, msgtype);
+ nsp32_dbg(NSP32_DEBUG_MSGINOCCUR, "enter");
- /*
- * TODO: We need checking whether bus phase is message in?
- */
+ synct = data->synct;
+ syncnum = data->syncnum;
/*
- * assert SCSI ACK
- */
- nsp32_sack_assert(data);
+ * If this inititor sent the SDTR message, then target responds SDTR,
+ * initiator SYNCREG, ACKWIDTH from SDTR parameter.
+ * Messages are not appropriate, then send back reject message.
+ * If initiator did not send the SDTR, but target sends SDTR,
+ * initiator calculator the appropriate parameter and send back SDTR.
+ */
+ if (target->sync_flag & SDTR_INITIATOR) {
+ /*
+ * Initiator sent SDTR, the target responds and
+ * send back negotiation SDTR.
+ */
+ nsp32_dbg(NSP32_DEBUG_MSGINOCCUR, "target responds SDTR");
+
+ target->sync_flag &= ~SDTR_INITIATOR;
+ target->sync_flag |= SDTR_DONE;
- /*
- * processing IDENTIFY
- */
- if (msgtype & 0x80) {
- if (!(irq_status & IRQSTATUS_RESELECT_OCCUER)) {
- /* Invalid (non reselect) phase */
- goto reject;
- }
-
- newlun = msgtype & 0x1f; /* TODO: SPI-3 compliant? */
- ret = nsp32_reselection(data, newlun);
- if (ret == TRUE) {
- goto restart;
- } else {
- goto reject;
- }
- }
-
- /*
- * processing messages except for IDENTIFY
- *
- * TODO: Messages are all SCSI-2 terminology. SCSI-3 compliance is TODO.
- */
- switch (msgtype) {
- /*
- * 1-byte message
- */
- case COMMAND_COMPLETE:
- case DISCONNECT:
/*
- * These messages should not be occurred.
- * They should be processed on AutoSCSI sequencer.
+ * offset:
*/
- nsp32_msg(KERN_WARNING,
- "unexpected message of AutoSCSI MsgIn: 0x%x", msg);
- break;
+ if (get_offset > SYNC_OFFSET) {
+ /*
+ * Negotiation is failed, the target send back
+ * unexpected offset value.
+ */
+ goto reject;
+ }
- case RESTORE_POINTERS:
+ if (get_offset == ASYNC_OFFSET) {
+ /*
+ * Negotiation is succeeded, the target want
+ * to fall back into asynchronous transfer mode.
+ */
+ goto async;
+ }
+
/*
- * AutoMsgIn03 is disabled, and HBA gets this message.
+ * period:
+ * Check whether sync period is too short. If too short,
+ * fall back to async mode. If it's ok, then investigate
+ * the received sync period. If sync period is acceptable
+ * between sync table start_period and end_period, then
+ * set this I_T nexus as sent offset and period.
+ * If it's not acceptable, send back reject and fall back
+ * to async mode.
*/
-
- if ((execph & DATA_IN_PHASE) || (execph & DATA_OUT_PHASE)) {
- unsigned int s_sacklen;
-
- s_sacklen = nsp32_read4(base, SAVED_SACK_CNT);
- if ((execph & MSGIN_02_VALID) && (s_sacklen > 0)) {
- nsp32_adjust_busfree(data, s_sacklen);
- } else {
- /* No need to rewrite SGT */
- }
+ if (get_period < data->synct[0].period_num) {
+ /*
+ * Negotiation is failed, the target send back
+ * unexpected period value.
+ */
+ goto reject;
}
- data->curlunt->msgin03 = FALSE;
- /* Update with the new value */
+ entry = nsp32_search_period_entry(data, target, get_period);
- /* reset SACK/SavedACK counter (or ALL clear?) */
- nsp32_write4(base, CLR_COUNTER, CLRCOUNTER_ALLMASK);
+ if (entry < 0) {
+ /*
+ * Target want to use long period which is not
+ * acceptable NinjaSCSI-32Bi/UDE.
+ */
+ goto reject;
+ }
/*
- * set new sg pointer
+ * Set new sync table and offset in this I_T nexus.
*/
- new_sgtp = data->curlunt->sglun_paddr +
- data->curlunt->cur_entry * sizeof(struct nsp32_sgtable);
- nsp32_write4(base, SGT_ADR, new_sgtp);
-
- break;
+ nsp32_set_sync_entry(data, target, entry, get_offset);
+ } else {
+ /* Target send SDTR to initiator. */
+ nsp32_dbg(NSP32_DEBUG_MSGINOCCUR, "target send SDTR");
+
+ target->sync_flag |= SDTR_INITIATOR;
- case SAVE_POINTERS:
- /*
- * These messages should not be occurred.
- * They should be processed on AutoSCSI sequencer.
- */
- nsp32_msg (KERN_WARNING,
- "unexpected message of AutoSCSI MsgIn: SAVE_POINTERS");
-
- break;
-
- case MESSAGE_REJECT:
- /* If previous message_out is sending SDTR, and get
- message_reject from target, SDTR negotiation is failed */
- if (data->curtarget->sync_flag &
- (SDTR_INITIATOR | SDTR_TARGET)) {
- /*
- * Current target is negotiating SDTR, but it's
- * failed. Fall back to async transfer mode, and set
- * SDTR_DONE.
- */
- nsp32_set_async(data, data->curtarget);
- data->curtarget->sync_flag &= ~SDTR_INITIATOR;
- data->curtarget->sync_flag |= SDTR_DONE;
+ /* offset: */
+ if (get_offset > SYNC_OFFSET) {
+ /* send back as SYNC_OFFSET */
+ get_offset = SYNC_OFFSET;
+ }
+ /* period: */
+ if (get_period < data->synct[0].period_num) {
+ get_period = data->synct[0].period_num;
}
- break;
- case LINKED_CMD_COMPLETE:
- case LINKED_FLG_CMD_COMPLETE:
- /* queue tag is not supported currently */
- nsp32_msg (KERN_WARNING,
- "unsupported message: 0x%x", msgtype);
- break;
+ entry = nsp32_search_period_entry(data, target, get_period);
- case INITIATE_RECOVERY:
- /* staring ECA (Extended Contingent Allegiance) state. */
- /* This message is declined in SPI2 or later. */
+ if (get_offset == ASYNC_OFFSET || entry < 0) {
+ nsp32_set_async(data, target);
+ nsp32_build_sdtr(SCpnt, 0, ASYNC_OFFSET);
+ } else {
+ nsp32_set_sync_entry(data, target, entry, get_offset);
+ nsp32_build_sdtr(SCpnt, get_period, get_offset);
+ }
+ }
- goto reject;
+ target->period = get_period;
+ nsp32_dbg(NSP32_DEBUG_MSGINOCCUR, "exit");
+ return;
+ reject:
/*
- * 2-byte message
+ * If the current message is unacceptable, send back to the target
+ * with reject message.
*/
- case SIMPLE_QUEUE_TAG:
- case 0x23:
- /*
- * 0x23: Ignore_Wide_Residue is not declared in scsi.h.
- * No support is needed.
- */
- if (data->msginlen >= 1) {
- goto reject;
- }
+ nsp32_build_reject(SCpnt);
- /* current position is 1-byte of 2 byte */
- msgclear = FALSE;
+ async:
+ nsp32_set_async(data, target); /* set as ASYNC transfer mode */
- break;
+ target->period = 0;
+ nsp32_dbg(NSP32_DEBUG_MSGINOCCUR, "exit: set async");
+ return;
+}
+
+
+/*
+ * Search config entry number matched in sync_table from given
+ * target and speed period value. If failed to search, return negative value.
+ */
+static int nsp32_search_period_entry(nsp32_hw_data *data,
+ nsp32_target *target,
+ unsigned char period)
+{
+ int i;
+
+ if (target->limit_entry >= data->syncnum) {
+ nsp32_msg(KERN_ERR, "limit_entry exceeds syncnum!");
+ target->limit_entry = 0;
+ }
+
+ for (i = target->limit_entry; i < data->syncnum; i++) {
+ if (period >= data->synct[i].start_period &&
+ period <= data->synct[i].end_period) {
+ break;
+ }
+ }
/*
- * extended message
+ * Check given period value is over the sync_table value.
+ * If so, return max value.
*/
- case EXTENDED_MESSAGE:
- if (data->msginlen < 1) {
- /*
- * Current position does not reach 2-byte
- * (2-byte is extended message length).
- */
- msgclear = FALSE;
- break;
- }
+ if (i == data->syncnum) {
+ i = -1;
+ }
- if ((data->msginbuf[1] + 1) > data->msginlen) {
- /*
- * Current extended message has msginbuf[1] + 2
- * (msginlen starts counting from 0, so buf[1] + 1).
- * If current message position is not finished,
- * continue receiving message.
- */
- msgclear = FALSE;
- break;
- }
+ return i;
+}
- /*
- * Reach here means regular length of each type of
- * extended messages.
- */
- switch (data->msginbuf[2]) {
- case EXTENDED_MODIFY_DATA_POINTER:
- /* TODO */
- goto reject; /* not implemented yet */
- break;
- case EXTENDED_SDTR:
- /*
- * Exchange this message between initiator and target.
- */
- if (data->msginlen != EXTENDED_SDTR_LEN + 1) {
- /*
- * received inappropriate message.
- */
- goto reject;
- break;
- }
+/*
+ * target <-> initiator use ASYNC transfer
+ */
+static void nsp32_set_async(nsp32_hw_data *data, nsp32_target *target)
+{
+ unsigned char period = data->synct[target->limit_entry].period_num;
- nsp32_analyze_sdtr(data);
+ target->offset = ASYNC_OFFSET;
+ target->period = 0;
+ target->syncreg = TO_SYNCREG(period, ASYNC_OFFSET);
+ target->ackwidth = 0;
+ target->sample_reg = 0;
- break;
+ nsp32_dbg(NSP32_DEBUG_SYNC, "set async");
+}
- case EXTENDED_EXTENDED_IDENTIFY:
- /* SCSI-I only, not supported. */
- goto reject; /* not implemented yet */
- break;
+/*
+ * target <-> initiator use maximum SYNC transfer
+ */
+static void nsp32_set_max_sync(nsp32_hw_data *data,
+ nsp32_target *target,
+ unsigned char *period,
+ unsigned char *offset)
+{
+ unsigned char period_num, ackwidth;
- case EXTENDED_WDTR:
- goto reject; /* not implemented yet */
+ period_num = data->synct[target->limit_entry].period_num;
+ *period = data->synct[target->limit_entry].start_period;
+ ackwidth = data->synct[target->limit_entry].ackwidth;
+ *offset = SYNC_OFFSET;
- break;
-
- default:
- goto reject;
- }
- break;
-
- default:
- goto reject;
- }
+ target->syncreg = TO_SYNCREG(period_num, *offset);
+ target->ackwidth = ackwidth;
+ target->offset = *offset;
+ target->sample_reg = 0; /* disable SREQ sampling */
+}
- restart:
- if (msgclear == TRUE) {
- data->msginlen = 0;
- /*
- * If restarting AutoSCSI, but there are some message to out
- * (msgoutlen > 0), set AutoATN, and set SCSIMSGOUT as 0
- * (MV_VALID = 0). When commandcontrol is written with
- * AutoSCSI restart, at the same time MsgOutOccur should be
- * happened (however, such situation is really possible...?).
- */
- if (data->msgoutlen > 0) {
- nsp32_write4(base, SCSI_MSG_OUT, 0);
- command |= AUTO_ATN;
+/*
+ * target <-> initiator use entry number speed
+ */
+static void nsp32_set_sync_entry(nsp32_hw_data *data,
+ nsp32_target *target,
+ int entry,
+ unsigned char offset)
+{
+ unsigned char period, ackwidth, sample_rate;
+
+ period = data->synct[entry].period_num;
+ ackwidth = data->synct[entry].ackwidth;
+ offset = offset;
+ sample_rate = data->synct[entry].sample_rate;
+
+ target->syncreg = TO_SYNCREG(period, offset);
+ target->ackwidth = ackwidth;
+ target->offset = offset;
+ target->sample_reg = sample_rate | SAMPLING_ENABLE;
+
+ nsp32_dbg(NSP32_DEBUG_SYNC, "set sync");
+}
+
+
+/*
+ * It waits until SCSI REQ becomes assertion or negation state.
+ *
+ * Note: If nsp32_msgin_occur is called, we asserts SCSI ACK. Then
+ * connected target responds SCSI REQ negation. We have to wait
+ * SCSI REQ becomes negation in order to negate SCSI ACK signal for
+ * REQ-ACK handshake.
+ */
+static void nsp32_wait_req(nsp32_hw_data *data, int state)
+{
+ unsigned int base = data->BaseAddress;
+ int wait_time = 0;
+ unsigned char bus, req_bit;
+
+ if (!((state == ASSERT) || (state == NEGATE))) {
+ nsp32_msg(KERN_ERR, "unknown state designation");
+ }
+ /* REQ is BIT(5) */
+ req_bit = (state == ASSERT ? BUSMON_REQ : 0);
+
+ do {
+ bus = nsp32_read1(base, SCSI_BUS_MONITOR);
+ if ((bus & BUSMON_REQ) == req_bit) {
+ nsp32_dbg(NSP32_DEBUG_WAIT,
+ "wait_time: %d", wait_time);
+ return;
}
+ udelay(1);
+ wait_time++;
+ } while (wait_time < REQSACK_TIMEOUT_TIME);
- /*
- * restart AutoSCSI
- * If it's failed, COMMANDCONTROL_AUTO_COMMAND_PHASE is needed.
- */
- command |= (AUTO_MSGIN_00_OR_04 | AUTO_MSGIN_02);
+ nsp32_msg(KERN_WARNING, "wait REQ timeout, req_bit: 0x%x", req_bit);
+}
- /*
- * If current msgin03 is TRUE, then flag on.
- */
- if (data->curlunt->msgin03 == TRUE) {
- command |= AUTO_MSGIN_03;
+/*
+ * It waits until SCSI SACK becomes assertion or negation state.
+ */
+static void nsp32_wait_sack(nsp32_hw_data *data, int state)
+{
+ unsigned int base = data->BaseAddress;
+ int wait_time = 0;
+ unsigned char bus, ack_bit;
+
+ if (!((state == ASSERT) || (state == NEGATE))) {
+ nsp32_msg(KERN_ERR, "unknown state designation");
+ }
+ /* ACK is BIT(4) */
+ ack_bit = (state == ASSERT ? BUSMON_ACK : 0);
+
+ do {
+ bus = nsp32_read1(base, SCSI_BUS_MONITOR);
+ if ((bus & BUSMON_ACK) == ack_bit) {
+ nsp32_dbg(NSP32_DEBUG_WAIT,
+ "wait_time: %d", wait_time);
+ return;
}
- data->curlunt->msgin03 = FALSE;
- } else {
- data->msginlen++;
+ udelay(1);
+ wait_time++;
+ } while (wait_time < REQSACK_TIMEOUT_TIME);
+
+ nsp32_msg(KERN_WARNING, "wait SACK timeout, ack_bit: 0x%x", ack_bit);
+}
+
+/*
+ * assert SCSI ACK
+ *
+ * Note: SCSI ACK assertion needs with ACKENB=1, AUTODIRECTION=1.
+ */
+static void nsp32_sack_assert(nsp32_hw_data *data)
+{
+ unsigned int base = data->BaseAddress;
+ unsigned char busctrl;
+
+ busctrl = nsp32_read1(base, SCSI_BUS_CONTROL);
+ busctrl |= (BUSCTL_ACK | AUTODIRECTION | ACKENB);
+ nsp32_write1(base, SCSI_BUS_CONTROL, busctrl);
+}
+
+/*
+ * negate SCSI ACK
+ */
+static void nsp32_sack_negate(nsp32_hw_data *data)
+{
+ unsigned int base = data->BaseAddress;
+ unsigned char busctrl;
+
+ busctrl = nsp32_read1(base, SCSI_BUS_CONTROL);
+ busctrl &= ~BUSCTL_ACK;
+ nsp32_write1(base, SCSI_BUS_CONTROL, busctrl);
+}
+
+
+
+/*
+ * Note: n_io_port is defined as 0x7f because I/O register port is
+ * assigned as:
+ * 0x800-0x8ff: memory mapped I/O port
+ * 0x900-0xbff: (map same 0x800-0x8ff I/O port image repeatedly)
+ * 0xc00-0xfff: CardBus status registers
+ */
+#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,5,73))
+#define DETECT_OK 0
+#define DETECT_NG 1
+#define PCIDEV pdev
+static int nsp32_detect(struct pci_dev *pdev)
+#else
+#define DETECT_OK 1
+#define DETECT_NG 0
+#define PCIDEV (data->Pci)
+static int nsp32_detect(Scsi_Host_Template *sht)
+#endif
+{
+ struct Scsi_Host *host; /* registered host structure */
+ struct resource *res;
+ nsp32_hw_data *data;
+ int ret;
+ int i, j;
+
+ nsp32_dbg(NSP32_DEBUG_REGISTER, "enter");
+
+ /*
+ * register this HBA as SCSI device
+ */
+#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,5,73))
+ host = scsi_host_alloc(&nsp32_template, sizeof(nsp32_hw_data));
+#else
+ host = scsi_register(sht, sizeof(nsp32_hw_data));
+#endif
+ if (host == NULL) {
+ nsp32_msg (KERN_ERR, "failed to scsi register");
+ goto err;
}
/*
- * restart AutoSCSI
+ * set nsp32_hw_data
+ */
+ data = (nsp32_hw_data *)host->hostdata;
+
+ memcpy(data, &nsp32_data_base, sizeof(nsp32_hw_data));
+
+ host->irq = data->IrqNumber;
+ host->io_port = data->BaseAddress;
+ host->unique_id = data->BaseAddress;
+ host->n_io_port = data->NumAddress;
+ host->base = data->MmioAddress;
+#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,5,63))
+ scsi_set_device(host, &PCIDEV->dev);
+#else
+ scsi_set_pci_device(host, PCIDEV);
+#endif
+
+ data->Host = host;
+ spin_lock_init(&(data->Lock));
+
+ data->cur_lunt = NULL;
+ data->cur_target = NULL;
+
+ /*
+ * Bus master transfer mode is supported currently.
+ */
+ data->trans_method = NSP32_TRANSFER_BUSMASTER;
+
+ /*
+ * Set clock div, CLOCK_4 (HBA has own external clock, and
+ * dividing * 100ns/4).
+ * Currently CLOCK_4 has only tested, not for CLOCK_2/PCICLK yet.
*/
- nsp32_restart_autoscsi(data, command);
+ data->clock = CLOCK_4;
/*
- * wait SCSI REQ negate for REQ-ACK handshake
+ * Select appropriate nsp32_sync_table and set I_CLOCKDIV.
*/
- nsp32_wait_req(data, NEGATE);
+ switch (data->clock) {
+ case CLOCK_4:
+ /* If data->clock is CLOCK_4, then select 40M sync table. */
+ data->synct = nsp32_sync_table_40M;
+ data->syncnum = NUMBER(nsp32_sync_table_40M);
+ break;
+ case CLOCK_2:
+ /* If data->clock is CLOCK_2, then select 20M sync table. */
+ data->synct = nsp32_sync_table_20M;
+ data->syncnum = NUMBER(nsp32_sync_table_20M);
+ break;
+ case PCICLK:
+ /* If data->clock is PCICLK, then select pci sync table. */
+ data->synct = nsp32_sync_table_pci;
+ data->syncnum = NUMBER(nsp32_sync_table_pci);
+ break;
+ default:
+ nsp32_msg(KERN_WARNING,
+ "Invalid clock div is selected, set CLOCK_4.");
+ /* Use default value CLOCK_4 */
+ data->clock = CLOCK_4;
+ data->synct = nsp32_sync_table_40M;
+ data->syncnum = NUMBER(nsp32_sync_table_40M);
+ }
/*
- * negate SCSI ACK
+ * setup nsp32_lunt
*/
- nsp32_sack_negate(data);
- nsp32_dbg(NSP32_DEBUG_MSGINOCCUR, "exit");
+ /*
+ * setup DMA
+ */
+ if (pci_set_dma_mask(PCIDEV, 0xffffffffUL) != 0) {
+ nsp32_msg (KERN_ERR, "failed to set PCI DMA mask");
+ goto scsi_unregister;
+ }
- return;
+ /*
+ * allocate autoparam DMA resource.
+ */
+ data->autoparam = pci_alloc_consistent(PCIDEV, sizeof(nsp32_autoparam), &(data->auto_paddr));
+ if (data->autoparam == NULL) {
+ nsp32_msg(KERN_ERR, "failed to allocate DMA memory");
+ goto scsi_unregister;
+ }
- reject:
- nsp32_msg(KERN_WARNING,
- "invalid or unsupported MessageIn, rejected. "
- "current msg: 0x%x (len: 0x%x), processing msg: 0x%x",
- msg, data->msginlen, msgtype);
- nsp32_build_reject(data);
- data->msginlen = 0;
+ /*
+ * allocate scatter-gather DMA resource.
+ */
+ data->sg_list = pci_alloc_consistent(PCIDEV, NSP32_SG_TABLE_SIZE,
+ &(data->sg_paddr));
+ if (data->sg_list == NULL) {
+ nsp32_msg(KERN_ERR, "failed to allocate DMA memory");
+ goto free_autoparam;
+ }
- goto restart;
-}
+ for (i = 0; i < NUMBER(data->lunt); i++) {
+ for (j = 0; j < NUMBER(data->lunt[0]); j++) {
+ int offset = i * NUMBER(data->lunt[0]) + j;
+ nsp32_lunt tmp = {
+ SCpnt: NULL,
+ save_datp: 0,
+ msgin03: FALSE,
+ sg_num: 0,
+ cur_entry: 0,
+ sglun: &(data->sg_list[offset]),
+ sglun_paddr: data->sg_paddr + (offset * sizeof(nsp32_sglun)),
+ };
-/*
- *
- */
-static void nsp32_analyze_sdtr(nsp32_hw_data *data)
-{
- struct nsp32_target *target = data->curtarget;
- struct nsp32_sync_table *synct;
- unsigned char get_period = data->msginbuf[3];
- unsigned char get_offset = data->msginbuf[4];
- int entry;
- int syncnum;
+ data->lunt[i][j] = tmp;
+ }
+ }
- nsp32_dbg(NSP32_DEBUG_MSGINOCCUR, "enter");
+ /*
+ * setup target
+ */
+ for (i = 0; i < NUMBER(data->target); i++) {
+ nsp32_target *target = &(data->target[i]);
- synct = data->synct;
- syncnum = data->syncnum;
+ target->limit_entry = 0;
+ target->sync_flag = 0;
+ nsp32_set_async(data, target);
+ }
/*
- * If this inititor sent the SDTR message, then target responds SDTR,
- * initiator SYNCREG, ACKWIDTH from SDTR parameter.
- * Messages are not appropriate, then send back reject message.
- * If initiator did not send the SDTR, but target sends SDTR,
- * initiator calculator the appropriate parameter and send back SDTR.
- */
- if (target->sync_flag & SDTR_INITIATOR) {
- /*
- * Initiator sent SDTR, the target responds and
- * send back negotiation SDTR.
- */
- nsp32_dbg(NSP32_DEBUG_MSGINOCCUR, "target responds SDTR");
-
- target->sync_flag &= ~SDTR_INITIATOR;
- target->sync_flag |= SDTR_DONE;
+ * EEPROM check
+ */
+ ret = nsp32_getprom_param(data);
+ if (ret == FALSE) {
+ data->resettime = 3; /* default 3 */
+ }
- /*
- * offset:
- */
- if (get_offset > SYNC_OFFSET) {
- /*
- * Negotiation is failed, the target send back
- * unexpected offset value.
- */
- goto reject;
- }
-
- if (get_offset == ASYNC_OFFSET) {
- /*
- * Negotiation is succeeded, the target want
- * to fall back into asynchronous transfer mode.
- */
- goto async;
- }
+ /*
+ * setup HBA
+ */
+ nsp32hw_init(data);
- /*
- * period:
- * Check whether sync period is too short. If too short,
- * fall back to async mode. If it's ok, then investigate
- * the received sync period. If sync period is acceptable
- * between sync table start_period and end_period, then
- * set this I_T nexus as sent offset and period.
- * If it's not acceptable, send back reject and fall back
- * to async mode.
- */
- if (get_period < data->synct[0].period_num) {
- /*
- * Negotiation is failed, the target send back
- * unexpected period value.
- */
- goto reject;
- }
+ snprintf(data->info_str, sizeof(data->info_str),
+ "NinjaSCSI-32Bi/UDE: irq %d, io 0x%lx+0x%x",
+ host->irq, host->io_port, host->n_io_port);
- entry = nsp32_search_period_entry(data, target, get_period);
+ /*
+ * SCSI bus reset
+ *
+ * Note: It's important to reset SCSI bus in initialization phase.
+ * NinjaSCSI-32Bi/UDE HBA EEPROM seems to exchange SDTR when
+ * system is coming up, so SCSI devices connected to HBA is set as
+ * un-asynchronous mode. It brings the merit that this HBA is
+ * ready to start synchronous transfer without any preparation,
+ * but we are difficult to control transfer speed. In addition,
+ * it prevents device transfer speed from effecting EEPROM start-up
+ * SDTR. NinjaSCSI-32Bi/UDE has the feature if EEPROM is set as
+ * Auto Mode, then FAST-10M is selected when SCSI devices are
+ * connected same or more than 4 devices. It should be avoided
+ * depending on this specification. Thus, resetting the SCSI bus
+ * restores all connected SCSI devices to asynchronous mode, then
+ * this driver set SDTR safely later, and we can control all SCSI
+ * device transfer mode.
+ */
+ nsp32_do_bus_reset(data);
- if (entry < 0) {
- /*
- * Target want to use long period which is not
- * acceptable NinjaSCSI-32Bi/UDE.
- */
- goto reject;
- }
+ ret = request_irq(host->irq, do_nsp32_isr,
+ SA_SHIRQ | SA_SAMPLE_RANDOM, "nsp32", data);
+ if (ret < 0) {
+ nsp32_msg(KERN_ERR, "Unable to allocate IRQ for NinjaSCSI32 "
+ "SCSI PCI controller. Interrupt: %d", host->irq);
+ goto free_sg_list;
+ }
- /*
- * Set new sync table and offset in this I_T nexus.
- */
- nsp32_set_sync_entry(data, target, entry, get_offset);
- } else {
- /* Target send SDTR to initiator. */
- nsp32_dbg(NSP32_DEBUG_MSGINOCCUR, "target send SDTR");
-
- target->sync_flag |= SDTR_INITIATOR;
+ /*
+ * PCI IO register
+ */
+ res = request_region(host->io_port, host->n_io_port, "nsp32");
+ if (res == NULL) {
+ nsp32_msg(KERN_ERR,
+ "I/O region 0x%lx+0x%lx is already used",
+ data->BaseAddress, data->NumAddress);
+ goto free_irq;
+ }
- /* offset: */
- if (get_offset > SYNC_OFFSET) {
- /* send back as SYNC_OFFSET */
- get_offset = SYNC_OFFSET;
- }
+#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,5,73))
+ scsi_add_host (host, &PCIDEV->dev);
+ scsi_scan_host(host);
+#endif
+ pci_set_drvdata(PCIDEV, host);
+ return DETECT_OK;
- /* period: */
- if (get_period < data->synct[0].period_num) {
- get_period = data->synct[0].period_num;
- }
+ free_irq:
+ free_irq(host->irq, data);
- entry = nsp32_search_period_entry(data, target, get_period);
+ free_sg_list:
+ pci_free_consistent(PCIDEV, NSP32_SG_TABLE_SIZE,
+ data->sg_list, data->sg_paddr);
- if (get_offset == ASYNC_OFFSET || entry < 0) {
- nsp32_set_async(data, target);
- nsp32_build_sdtr(data, 0, ASYNC_OFFSET);
- } else {
- nsp32_set_sync_entry(data, target, entry, get_offset);
- nsp32_build_sdtr(data, get_period, get_offset);
- }
- }
+ free_autoparam:
+ pci_free_consistent(PCIDEV, sizeof(nsp32_autoparam),
+ data->autoparam, data->auto_paddr);
- nsp32_dbg(NSP32_DEBUG_MSGINOCCUR, "exit");
- return;
-
- reject:
- /*
- * If the current message is unacceptable, send back to the target
- * with reject message.
- */
- nsp32_build_reject(data);
-
- async:
- nsp32_set_async(data, target); /* set as ASYNC transfer mode */
+ scsi_unregister:
+ scsi_host_put(host);
- nsp32_dbg(NSP32_DEBUG_MSGINOCCUR, "exit: set async");
- return;
+ err:
+ return DETECT_NG;
}
+#undef DETECT_OK
+#undef DETECT_NG
+#undef PCIDEV
-
-/*
- * Search config entry number matched in sync_table from given
- * target and speed period value. If failed to search, return negative value.
- */
-static int nsp32_search_period_entry(nsp32_hw_data *data,
- struct nsp32_target *target,
- unsigned char period)
+static int nsp32_release(struct Scsi_Host *host)
{
- int i;
+ nsp32_hw_data *data = (nsp32_hw_data *)host->hostdata;
- if (target->limit_entry >= data->syncnum) {
- nsp32_msg(KERN_ERR, "limit_entry exceeds syncnum!");
- target->limit_entry = 0;
+ if (data->autoparam) {
+ pci_free_consistent(data->Pci, sizeof(nsp32_autoparam),
+ data->autoparam, data->auto_paddr);
}
- for (i=target->limit_entry; i<data->syncnum; i++) {
- if (period >= data->synct[i].start_period &&
- period <= data->synct[i].end_period) {
- break;
- }
+ if (data->sg_list) {
+ pci_free_consistent(data->Pci, NSP32_SG_TABLE_SIZE,
+ data->sg_list, data->sg_paddr);
}
- /*
- * Check given period value is over the sync_table value.
- * If so, return max value.
- */
- if (i == data->syncnum) {
- i = -1;
+ if (host->irq) {
+ free_irq(host->irq, data);
}
- return i;
-}
-
-
-/*
- * target <-> initiator use ASYNC transfer
- */
-static void nsp32_set_async(nsp32_hw_data *data, struct nsp32_target *target)
-{
- unsigned char period = data->synct[target->limit_entry].period_num;
+ if (host->io_port && host->n_io_port) {
+ release_region(host->io_port, host->n_io_port);
+ }
- target->offset = ASYNC_OFFSET;
- target->syncreg = TO_SYNCREG(period, ASYNC_OFFSET);
- target->ackwidth = 0;
+ if (data->MmioAddress != 0) {
+ iounmap((void *)(data->MmioAddress));
+ }
- nsp32_dbg(NSP32_DEBUG_SYNC, "set async");
+ return 0;
}
+static const char *nsp32_info(struct Scsi_Host *shpnt)
+{
+ nsp32_hw_data *data = (nsp32_hw_data *)shpnt->hostdata;
-/*
- * target <-> initiator use maximum SYNC transfer
- */
-static void nsp32_set_max_sync(nsp32_hw_data *data,
- struct nsp32_target *target,
- unsigned char *period, unsigned char *offset)
-{
- unsigned char period_num, ackwidth;
-
- period_num = data->synct[target->limit_entry].period_num;
- *period = data->synct[target->limit_entry].start_period;
- ackwidth = data->synct[target->limit_entry].ackwidth;
- *offset = SYNC_OFFSET;
-
- target->syncreg = TO_SYNCREG(period_num, *offset);
- target->ackwidth = ackwidth;
- target->offset = *offset;
+ return data->info_str;
}
-/*
- * target <-> initiator use entry number speed
+/****************************************************************************
+ * error handler
*/
-static void nsp32_set_sync_entry(nsp32_hw_data *data,
- struct nsp32_target *target,
- int entry, unsigned char offset)
+static int nsp32_eh_abort(Scsi_Cmnd *SCpnt)
{
- unsigned char period, ackwidth;
+ nsp32_hw_data *data = (nsp32_hw_data *)SCpnt->device->host->hostdata;
+ unsigned int base = SCpnt->device->host->io_port;
- period = data->synct[entry].period_num;
- ackwidth = data->synct[entry].ackwidth;
- offset = offset;
+ nsp32_msg(KERN_WARNING, "abort");
- target->syncreg = TO_SYNCREG(period, offset);
- target->ackwidth = ackwidth;
- target->offset = offset;
+ if (data->cur_lunt->SCpnt == NULL) {
+ nsp32_dbg(NSP32_DEBUG_BUSRESET, "abort failed");
+ return FAILED;
+ }
- nsp32_dbg(NSP32_DEBUG_SYNC, "set sync");
-}
+ if (data->cur_target->sync_flag & (SDTR_INITIATOR | SDTR_TARGET)) {
+ /* reset SDTR negotiation */
+ data->cur_target->sync_flag = 0;
+ nsp32_set_async(data, data->cur_target);
+ }
+ nsp32_write2(base, TRANSFER_CONTROL, 0);
+ nsp32_write2(base, BM_CNT, 0);
-/*
- * It waits until SCSI REQ becomes assertion or negation state.
- *
- * Note: If nsp32_msgin_occur is called, we asserts SCSI ACK. Then
- * connected target responds SCSI REQ negation. We have to wait
- * SCSI REQ becomes negation in order to negate SCSI ACK signal for
- * REQ-ACK handshake.
- */
-static void nsp32_wait_req(nsp32_hw_data *data, int state)
+ SCpnt->result = DID_ABORT << 16;
+ nsp32_scsi_done(SCpnt);
+
+ nsp32_dbg(NSP32_DEBUG_BUSRESET, "abort success");
+ return SUCCESS;
+}
+
+static int nsp32_eh_bus_reset(Scsi_Cmnd *SCpnt)
{
- unsigned int base = data->BaseAddress;
- int wait_time = 0;
- unsigned char bus;
+ nsp32_hw_data *data = (nsp32_hw_data *)SCpnt->device->host->hostdata;
+ unsigned int base = SCpnt->device->host->io_port;
- if (!((state == ASSERT) || (state == NEGATE))) {
- nsp32_msg(KERN_ERR, "unknown state designation");
- }
- state <<= 5; /* REQ is BIT(5) */
+ nsp32_msg(KERN_INFO, "Bus Reset");
+ nsp32_dbg(NSP32_DEBUG_BUSRESET, "SCpnt=0x%x", SCpnt);
- do {
- bus = nsp32_read1(base, SCSI_BUS_MONITOR);
- if ((bus & BUSMON_REQ) == state) {
- nsp32_dbg(NSP32_DEBUG_WAIT,
- "wait_time: %d", wait_time);
- return;
- }
- udelay(1);
- wait_time++;
- } while (wait_time < REQSACK_TIMEOUT_TIME);
+ nsp32_write2(base, IRQ_CONTROL, IRQ_CONTROL_ALL_IRQ_MASK);
+ nsp32_do_bus_reset(data);
+ nsp32_write2(base, IRQ_CONTROL, 0);
- nsp32_msg(KERN_WARNING, "wait REQ timeout, state: %d", state);
+ return SUCCESS; /* SCSI bus reset is succeeded at any time. */
}
-/*
- * It waits until SCSI SACK becomes assertion or negation state.
- */
-static void nsp32_wait_sack(nsp32_hw_data *data, int state)
+static void nsp32_do_bus_reset(nsp32_hw_data *data)
{
- unsigned int base = data->BaseAddress;
- int wait_time = 0;
- unsigned char bus;
+ unsigned int base = data->BaseAddress;
+ unsigned short intrdat;
+ int i;
- if (!((state == ASSERT) || (state == NEGATE))) {
- nsp32_msg(KERN_ERR, "unknown state designation");
+ nsp32_dbg(NSP32_DEBUG_BUSRESET, "in");
+
+ /*
+ * stop all transfer
+ * clear TRANSFERCONTROL_BM_START
+ * clear counter
+ */
+ nsp32_write2(base, TRANSFER_CONTROL, 0);
+ nsp32_write4(base, BM_CNT, 0);
+ nsp32_write4(base, CLR_COUNTER, CLRCOUNTER_ALLMASK);
+
+ /*
+ * fall back to asynchronous transfer mode
+ * initialize SDTR negotiation flag
+ */
+ for (i = 0; i < NUMBER(data->target); i++) {
+ nsp32_target *target = &data->target[i];
+
+ target->sync_flag = 0;
+ nsp32_set_async(data, target);
}
- state <<= 4; /* ACK is BIT(4) */
- do {
- bus = nsp32_read1(base, SCSI_BUS_MONITOR);
- if ((bus & BUSMON_ACK) == state) {
- nsp32_dbg(NSP32_DEBUG_WAIT,
- "wait_time: %d", wait_time);
- return;
- }
- udelay(1);
- wait_time++;
- } while (wait_time < REQSACK_TIMEOUT_TIME);
+ /*
+ * reset SCSI bus
+ */
+ nsp32_write1(base, SCSI_BUS_CONTROL, BUSCTL_RST);
+ udelay(RESET_HOLD_TIME);
+ nsp32_write1(base, SCSI_BUS_CONTROL, 0);
+ for(i = 0; i < 5; i++) {
+ intrdat = nsp32_read2(base, IRQ_STATUS); /* dummy read */
+ nsp32_dbg(NSP32_DEBUG_BUSRESET, "irq:1: 0x%x", intrdat);
+ }
- nsp32_msg(KERN_WARNING, "wait SACK timeout, state: %d", state);
+ data->CurrentSC = NULL;
}
-/*
- * assert SCSI ACK
- *
- * Note: SCSI ACK assertion needs with ACKENB=1, AUTODIRECTION=1.
- */
-static void nsp32_sack_assert(nsp32_hw_data *data)
+static int nsp32_eh_host_reset(Scsi_Cmnd *SCpnt)
{
- unsigned char busctrl;
- unsigned int base = data->BaseAddress;
+ struct Scsi_Host *host = SCpnt->device->host;
+ unsigned int base = SCpnt->device->host->io_port;
+ nsp32_hw_data *data = (nsp32_hw_data *)host->hostdata;
- busctrl = nsp32_read1(base, SCSI_BUS_CONTROL);
- busctrl |= (BUSCTL_ACK | AUTODIRECTION | ACKENB);
- nsp32_write1(base, SCSI_BUS_CONTROL,busctrl);
-}
+ nsp32_msg(KERN_INFO, "Host Reset");
+ nsp32_dbg(NSP32_DEBUG_BUSRESET, "SCpnt=0x%x", SCpnt);
-/*
- * negate SCSI ACK
- */
-static void nsp32_sack_negate(nsp32_hw_data *data)
-{
- unsigned char busctrl;
- unsigned int base = data->BaseAddress;
+ nsp32hw_init(data);
+ nsp32_write2(base, IRQ_CONTROL, IRQ_CONTROL_ALL_IRQ_MASK);
+ nsp32_do_bus_reset(data);
+ nsp32_write2(base, IRQ_CONTROL, 0);
- busctrl = nsp32_read1(base, SCSI_BUS_CONTROL);
- busctrl &= ~BUSCTL_ACK;
- nsp32_write1(base, SCSI_BUS_CONTROL, busctrl);
+ return SUCCESS; /* Host reset is succeeded at any time. */
}
+/**************************************************************************
+ * EEPROM handler
+ */
/*
* getting EEPROM parameter
ret = nsp32_prom_read(data, 0x7e);
if (ret != 0x55) {
nsp32_msg(KERN_INFO, "No EEPROM detected: 0x%x", ret);
- return (FALSE);
+ return FALSE;
}
ret = nsp32_prom_read(data, 0x7f);
if (ret != 0xaa) {
nsp32_msg(KERN_INFO, "Invalid number: 0x%x", ret);
- return (FALSE);
+ return FALSE;
}
/*
*/
if (vendor == PCI_VENDOR_ID_WORKBIT &&
device == PCI_DEVICE_ID_WORKBIT_STANDARD) {
- ret = nsp32_getprom_standard(data);
+ ret = nsp32_getprom_c16(data);
} else if (vendor == PCI_VENDOR_ID_WORKBIT &&
device == PCI_DEVICE_ID_NINJASCSI_32BIB_LOGITEC) {
- ret = nsp32_getprom_new(data);
+ ret = nsp32_getprom_at24(data);
} else if (vendor == PCI_VENDOR_ID_WORKBIT &&
device == PCI_DEVICE_ID_NINJASCSI_32UDE_MELCO ) {
- ret = nsp32_getprom_new(data);
+ ret = nsp32_getprom_at24(data);
} else {
nsp32_msg(KERN_WARNING, "Unknown EEPROM");
ret = FALSE;
}
/* for debug : SPROM data full checking */
- for (i=0; i<=0x1f; i++) {
+ for (i = 0; i <= 0x1f; i++) {
val = nsp32_prom_read(data, i);
nsp32_dbg(NSP32_DEBUG_EEPROM,
"rom address 0x%x : 0x%x", i, val);
}
- return (ret);
+ return ret;
}
* 0x1c : Constant? (0x01) (clock div?)
* 0x1d - 0x7c : Not Used (0xff)
* 0x7d : Not Used? (0xff)
- * 0x7e : Constant (0x55), HBA chip revision
- * 0x7f : Constant (0xaa), HBA value
+ * 0x7e : Constant (0x55), Validity signature
+ * 0x7f : Constant (0xaa), Validity signature
*/
-static int nsp32_getprom_new(nsp32_hw_data *data)
+static int nsp32_getprom_at24(nsp32_hw_data *data)
{
- int ret, i;
- int auto_sync;
- struct nsp32_target *target;
- int entry;
+ int ret, i;
+ int auto_sync;
+ nsp32_target *target;
+ int entry;
/*
* Reset time which is designated by EEPROM.
break;
default:
nsp32_msg(KERN_WARNING,
- "Unsupported Auto Sync mode."
- "Fall back to manual mode.");
+ "Unsupported Auto Sync mode. Fall back to manual mode.");
auto_sync = TRUE;
}
/*
* each device Synchronous Transfer Period
*/
- for (i=0; i<NSP32_HOST_SCSIID; i++) {
+ for (i = 0; i < NSP32_HOST_SCSIID; i++) {
target = &data->target[i];
if (auto_sync == TRUE) {
target->limit_entry = 0; /* set as ULTRA20M */
} else {
- ret = nsp32_prom_read(data, i);
+ ret = nsp32_prom_read(data, i);
entry = nsp32_search_period_entry(data, target, ret);
if (entry < 0) {
/* search failed... set maximum speed */
}
}
- return (TRUE);
+ return TRUE;
}
/*
- * ? (I-O Data: SC-NBD) data map:
+ * C16 110 (I-O Data: SC-NBD) data map:
*
* ROMADDR
* 0x00 - 0x06 : Device Synchronous Transfer Period (SCSI ID 0 - 6)
* Value 0: Disable, 1: Enable
* 0x1a - 0x7c : Not Used? (0)
* 0x7d : Not Used? (0xf8)
- * 0x7e : Constant (0x55), HBA chip revision
- * 0x7f : Constant (0xaa), HBA value
+ * 0x7e : Constant (0x55), Validity signature
+ * 0x7f : Constant (0xaa), Validity signature
*/
-static int nsp32_getprom_standard(nsp32_hw_data *data)
+static int nsp32_getprom_c16(nsp32_hw_data *data)
{
- int ret, i;
- struct nsp32_target *target;
- int entry, val;
+ int ret, i;
+ nsp32_target *target;
+ int entry, val;
/*
* Reset time which is designated by EEPROM.
/*
* each device Synchronous Transfer Period
*/
- for (i=0; i<NSP32_HOST_SCSIID; i++) {
+ for (i = 0; i < NSP32_HOST_SCSIID; i++) {
target = &data->target[i];
ret = nsp32_prom_read(data, i);
switch (ret) {
val = 0x32;
break;
case 3: /* ASYNC */
- val = 0x0;
+ val = 0x00;
break;
default: /* default 20MB/s */
val = 0x0c;
+ break;
}
entry = nsp32_search_period_entry(data, target, val);
if (entry < 0 || trans_mode == ULTRA20M_MODE) {
target->limit_entry = entry;
}
- return (TRUE);
+ return TRUE;
}
nsp32_prom_start(data);
/* device address */
- nsp32_prom_write(data, 1); /* 1 */
- nsp32_prom_write(data, 0); /* 0 */
- nsp32_prom_write(data, 1); /* 1 */
- nsp32_prom_write(data, 0); /* 0 */
- nsp32_prom_write(data, 0); /* A2: 0 (GND) */
- nsp32_prom_write(data, 0); /* A1: 0 (GND) */
- nsp32_prom_write(data, 0); /* A0: 0 (GND) */
+ nsp32_prom_write_bit(data, 1); /* 1 */
+ nsp32_prom_write_bit(data, 0); /* 0 */
+ nsp32_prom_write_bit(data, 1); /* 1 */
+ nsp32_prom_write_bit(data, 0); /* 0 */
+ nsp32_prom_write_bit(data, 0); /* A2: 0 (GND) */
+ nsp32_prom_write_bit(data, 0); /* A1: 0 (GND) */
+ nsp32_prom_write_bit(data, 0); /* A0: 0 (GND) */
/* R/W: W for dummy write */
- nsp32_prom_write(data, 0);
+ nsp32_prom_write_bit(data, 0);
/* ack */
- nsp32_prom_write(data, 0);
+ nsp32_prom_write_bit(data, 0);
/* word address */
- for (i=7; i>=0; i--) {
- nsp32_prom_write(data, ((romaddr >> i) & 1));
+ for (i = 7; i >= 0; i--) {
+ nsp32_prom_write_bit(data, ((romaddr >> i) & 1));
}
/* ack */
- nsp32_prom_write(data, 0);
+ nsp32_prom_write_bit(data, 0);
/* start condition */
nsp32_prom_start(data);
/* device address */
- nsp32_prom_write(data, 1); /* 1 */
- nsp32_prom_write(data, 0); /* 0 */
- nsp32_prom_write(data, 1); /* 1 */
- nsp32_prom_write(data, 0); /* 0 */
- nsp32_prom_write(data, 0); /* A2: 0 (GND) */
- nsp32_prom_write(data, 0); /* A1: 0 (GND) */
- nsp32_prom_write(data, 0); /* A0: 0 (GND) */
+ nsp32_prom_write_bit(data, 1); /* 1 */
+ nsp32_prom_write_bit(data, 0); /* 0 */
+ nsp32_prom_write_bit(data, 1); /* 1 */
+ nsp32_prom_write_bit(data, 0); /* 0 */
+ nsp32_prom_write_bit(data, 0); /* A2: 0 (GND) */
+ nsp32_prom_write_bit(data, 0); /* A1: 0 (GND) */
+ nsp32_prom_write_bit(data, 0); /* A0: 0 (GND) */
/* R/W: R */
- nsp32_prom_write(data, 1);
+ nsp32_prom_write_bit(data, 1);
/* ack */
- nsp32_prom_write(data, 0);
+ nsp32_prom_write_bit(data, 0);
/* data... */
val = 0;
- for (i=7; i>=0; i--) {
- val += (nsp32_prom_fetch(data) << i);
+ for (i = 7; i >= 0; i--) {
+ val += (nsp32_prom_read_bit(data) << i);
}
/* no ack */
- nsp32_prom_write(data, 1);
+ nsp32_prom_write_bit(data, 1);
/* stop condition */
nsp32_prom_stop(data);
- return (val);
+ return val;
}
static void nsp32_prom_start (nsp32_hw_data *data)
nsp32_prom_set(data, SCL, 0);
}
-static void nsp32_prom_write (nsp32_hw_data *data, int val)
+static void nsp32_prom_write_bit(nsp32_hw_data *data, int val)
{
/* write */
nsp32_prom_set(data, SDA, val);
- nsp32_prom_set(data, SCL, 1);
- nsp32_prom_set(data, SCL, 0);
+ nsp32_prom_set(data, SCL, 1 );
+ nsp32_prom_set(data, SCL, 0 );
}
-static int nsp32_prom_fetch (nsp32_hw_data *data)
+static int nsp32_prom_read_bit(nsp32_hw_data *data)
{
int val;
/* read */
nsp32_prom_set(data, ENA, 0); /* input mode */
nsp32_prom_set(data, SCL, 1);
+
val = nsp32_prom_get(data, SDA);
+
nsp32_prom_set(data, SCL, 0);
nsp32_prom_set(data, ENA, 1); /* output mode */
- return (val);
+
+ return val;
}
static inline void nsp32_prom_set(nsp32_hw_data *data, int bit, int val)
{
- int cur;
int base = data->BaseAddress;
+ int tmp;
- switch(val) {
- case 0:
- cur = nsp32_index_read1(base, SERIAL_ROM_CTL);
- nsp32_index_write1(base, SERIAL_ROM_CTL, cur & ~bit);
- break;
- case 1:
- cur = nsp32_index_read1(base, SERIAL_ROM_CTL);
- nsp32_index_write1(base, SERIAL_ROM_CTL, cur | bit);
- break;
- default:
- nsp32_msg(KERN_ERR, "val must be 0 or 1");
- return;
+ tmp = nsp32_index_read1(base, SERIAL_ROM_CTL);
+
+ if (val == 0) {
+ tmp &= ~bit;
+ } else {
+ tmp |= bit;
}
+ nsp32_index_write1(base, SERIAL_ROM_CTL, tmp);
+
udelay(10);
}
static inline int nsp32_prom_get(nsp32_hw_data *data, int bit)
{
- int ret;
int base = data->BaseAddress;
+ int tmp, ret;
- ret = nsp32_index_read1(base, SERIAL_ROM_CTL) & bit;
- switch (ret) {
- case 0:
+ if (bit != SDA) {
+ nsp32_msg(KERN_ERR, "return value is not appropriate");
+ return 0;
+ }
+
+
+ tmp = nsp32_index_read1(base, SERIAL_ROM_CTL) & bit;
+
+ if (tmp == 0) {
ret = 0;
- break;
- case SDA:
+ } else {
ret = 1;
- break;
- default:
- nsp32_msg(KERN_ERR, "return value is not appropriate");
}
udelay(10);
- return (ret);
+ return ret;
+}
+
+
+/**************************************************************************
+ * Power Management
+ */
+#ifdef CONFIG_PM
+/* Save Device Context */
+static int nsp32_save_state(struct pci_dev *pdev, u32 state)
+{
+ struct Scsi_Host *host = pci_get_drvdata(pdev);
+
+ nsp32_msg(KERN_INFO, "pci-save_state: stub, pdev=0x%p, state=%ld, slot=%s, host=0x%p", pdev, state, pci_name(pdev), host);
+
+ return 0;
+}
+
+/* Device suspended */
+static int nsp32_suspend(struct pci_dev *pdev, u32 state)
+{
+ struct Scsi_Host *host = pci_get_drvdata(pdev);
+ nsp32_hw_data *data = (nsp32_hw_data *)host->hostdata;
+
+ nsp32_msg(KERN_INFO, "pci-suspend: pdev=0x%p, state=%ld, slot=%s, host=0x%p", pdev, state, pci_name(pdev), host);
+
+ pci_save_state (pdev, data->PciState);
+ pci_disable_device (pdev);
+ pci_set_power_state(pdev, state);
+
+ return 0;
+}
+
+/* Device woken up */
+static int nsp32_resume(struct pci_dev *pdev)
+{
+ struct Scsi_Host *host = pci_get_drvdata(pdev);
+ nsp32_hw_data *data = (nsp32_hw_data *)host->hostdata;
+ unsigned short reg;
+
+ nsp32_msg(KERN_INFO, "pci-resume: pdev=0x%p, slot=%s, host=0x%p", pdev, pci_name(pdev), host);
+
+ pci_set_power_state(pdev, 0);
+ pci_enable_wake (pdev, 0, 0);
+ pci_restore_state (pdev, data->PciState);
+
+ reg = nsp32_read2(data->BaseAddress, INDEX_REG);
+
+ nsp32_msg(KERN_INFO, "io=0x%x reg=0x%x", data->BaseAddress, reg);
+
+ if (reg == 0xffff) {
+ nsp32_msg(KERN_INFO, "missing device. abort resume.");
+ return 0;
+ }
+
+ nsp32hw_init (data);
+ nsp32_do_bus_reset(data);
+
+ nsp32_msg(KERN_INFO, "resume success");
+
+ return 0;
+}
+
+/* Enable wake event */
+static int nsp32_enable_wake(struct pci_dev *pdev, u32 state, int enable)
+{
+ struct Scsi_Host *host = pci_get_drvdata(pdev);
+
+ nsp32_msg(KERN_INFO, "pci-enable_wake: stub, pdev=0x%p, enable=%d, slot=%s, host=0x%p", pdev, enable, pci_name(pdev), host);
+
+ return 0;
+}
+#endif
+
+/************************************************************************
+ * PCI/Cardbus probe/remove routine
+ */
+static int __devinit nsp32_probe(struct pci_dev *pdev, const struct pci_device_id *id)
+{
+ int ret;
+ nsp32_hw_data *data = &nsp32_data_base;
+
+ nsp32_dbg(NSP32_DEBUG_REGISTER, "enter");
+
+ ret = pci_enable_device(pdev);
+ if (ret) {
+ nsp32_msg(KERN_ERR, "failed to enable pci device");
+ return ret;
+ }
+
+ data->Pci = pdev;
+ data->pci_devid = id;
+ data->IrqNumber = pdev->irq;
+ data->BaseAddress = pci_resource_start(pdev, 0);
+ data->NumAddress = pci_resource_len (pdev, 0);
+ data->MmioAddress =
+ (unsigned long)ioremap_nocache(pci_resource_start(pdev, 1),
+ pci_resource_len (pdev, 1));
+ data->MmioLength = pci_resource_len (pdev, 1);
+
+ pci_set_master(pdev);
+
+#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,5,73))
+ ret = nsp32_detect(pdev);
+#else
+ ret = scsi_register_host(&nsp32_template);
+#endif
+
+ nsp32_msg(KERN_INFO, "irq: %i mmio: 0x%lx+0x%lx slot: %s model: %s",
+ pdev->irq,
+ data->MmioAddress, data->MmioLength,
+ pci_name(pdev),
+ nsp32_model[id->driver_data]);
+
+ nsp32_dbg(NSP32_DEBUG_REGISTER, "exit %d", ret);
+
+ return ret;
}
+static void __devexit nsp32_remove(struct pci_dev *pdev)
+{
+#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,5,73))
+ struct Scsi_Host *host = pci_get_drvdata(pdev);
+#endif
+
+ nsp32_dbg(NSP32_DEBUG_REGISTER, "enter");
+
+#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,5,73))
+ scsi_remove_host(host);
+
+ nsp32_release(host);
+
+ scsi_host_put(host);
+#else
+ scsi_unregister_host(&nsp32_template);
+#endif
+}
+
+
+
+static struct pci_driver nsp32_driver = {
+ .name = "nsp32",
+ .id_table = nsp32_pci_table,
+ .probe = nsp32_probe,
+ .remove = __devexit_p(nsp32_remove),
+#ifdef CONFIG_PM
+ .save_state = nsp32_save_state,
+ .suspend = nsp32_suspend,
+ .resume = nsp32_resume,
+ .enable_wake = nsp32_enable_wake,
+#endif
+};
+
+/*********************************************************************
+ * Moule entry point
+ */
+static int __init init_nsp32(void) {
+ nsp32_msg(KERN_INFO, "loading...");
+ return pci_module_init(&nsp32_driver);
+}
+
+static void __exit exit_nsp32(void) {
+ nsp32_msg(KERN_INFO, "unloading...");
+ pci_unregister_driver(&nsp32_driver);
+}
+
+module_init(init_nsp32);
+module_exit(exit_nsp32);
+
/* end */
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