diff options
Diffstat (limited to 'drivers/scsi/scsi_transport_spi.c')
-rw-r--r-- | drivers/scsi/scsi_transport_spi.c | 109 |
1 files changed, 77 insertions, 32 deletions
diff --git a/drivers/scsi/scsi_transport_spi.c b/drivers/scsi/scsi_transport_spi.c index 7ee95eb83dd..780aaedcbce 100644 --- a/drivers/scsi/scsi_transport_spi.c +++ b/drivers/scsi/scsi_transport_spi.c @@ -401,8 +401,7 @@ static int period_to_str(char *buf, int period) } static ssize_t -show_spi_transport_period_helper(struct class_device *cdev, char *buf, - int period) +show_spi_transport_period_helper(char *buf, int period) { int len = period_to_str(buf, period); buf[len++] = '\n'; @@ -459,7 +458,7 @@ show_spi_transport_period(struct class_device *cdev, char *buf) if (i->f->get_period) i->f->get_period(starget); - return show_spi_transport_period_helper(cdev, buf, tp->period); + return show_spi_transport_period_helper(buf, tp->period); } static ssize_t @@ -494,7 +493,7 @@ show_spi_transport_min_period(struct class_device *cdev, char *buf) struct spi_transport_attrs *tp = (struct spi_transport_attrs *)&starget->starget_data; - return show_spi_transport_period_helper(cdev, buf, tp->min_period); + return show_spi_transport_period_helper(buf, tp->min_period); } static ssize_t @@ -900,13 +899,11 @@ spi_dv_device(struct scsi_device *sdev) if (unlikely(scsi_device_get(sdev))) return; - buffer = kmalloc(len, GFP_KERNEL); + buffer = kzalloc(len, GFP_KERNEL); if (unlikely(!buffer)) goto out_put; - memset(buffer, 0, len); - /* We need to verify that the actual device will quiesce; the * later target quiesce is just a nice to have */ if (unlikely(scsi_device_quiesce(sdev))) @@ -1054,25 +1051,63 @@ void spi_display_xfer_agreement(struct scsi_target *starget) } EXPORT_SYMBOL(spi_display_xfer_agreement); +int spi_populate_width_msg(unsigned char *msg, int width) +{ + msg[0] = EXTENDED_MESSAGE; + msg[1] = 2; + msg[2] = EXTENDED_WDTR; + msg[3] = width; + return 4; +} +EXPORT_SYMBOL_GPL(spi_populate_width_msg); + +int spi_populate_sync_msg(unsigned char *msg, int period, int offset) +{ + msg[0] = EXTENDED_MESSAGE; + msg[1] = 3; + msg[2] = EXTENDED_SDTR; + msg[3] = period; + msg[4] = offset; + return 5; +} +EXPORT_SYMBOL_GPL(spi_populate_sync_msg); + +int spi_populate_ppr_msg(unsigned char *msg, int period, int offset, + int width, int options) +{ + msg[0] = EXTENDED_MESSAGE; + msg[1] = 6; + msg[2] = EXTENDED_PPR; + msg[3] = period; + msg[4] = 0; + msg[5] = offset; + msg[6] = width; + msg[7] = options; + return 8; +} +EXPORT_SYMBOL_GPL(spi_populate_ppr_msg); + #ifdef CONFIG_SCSI_CONSTANTS static const char * const one_byte_msgs[] = { -/* 0x00 */ "Command Complete", NULL, "Save Pointers", +/* 0x00 */ "Task Complete", NULL /* Extended Message */, "Save Pointers", /* 0x03 */ "Restore Pointers", "Disconnect", "Initiator Error", -/* 0x06 */ "Abort", "Message Reject", "Nop", "Message Parity Error", +/* 0x06 */ "Abort Task Set", "Message Reject", "Nop", "Message Parity Error", /* 0x0a */ "Linked Command Complete", "Linked Command Complete w/flag", -/* 0x0c */ "Bus device reset", "Abort Tag", "Clear Queue", -/* 0x0f */ "Initiate Recovery", "Release Recovery" +/* 0x0c */ "Target Reset", "Abort Task", "Clear Task Set", +/* 0x0f */ "Initiate Recovery", "Release Recovery", +/* 0x11 */ "Terminate Process", "Continue Task", "Target Transfer Disable", +/* 0x14 */ NULL, NULL, "Clear ACA", "LUN Reset" }; static const char * const two_byte_msgs[] = { /* 0x20 */ "Simple Queue Tag", "Head of Queue Tag", "Ordered Queue Tag", -/* 0x23 */ "Ignore Wide Residue" +/* 0x23 */ "Ignore Wide Residue", "ACA" }; static const char * const extended_msgs[] = { /* 0x00 */ "Modify Data Pointer", "Synchronous Data Transfer Request", /* 0x02 */ "SCSI-I Extended Identify", "Wide Data Transfer Request", -/* 0x04 */ "Parallel Protocol Request" +/* 0x04 */ "Parallel Protocol Request", "Modify Bidirectional Data Pointer" }; static void print_nego(const unsigned char *msg, int per, int off, int width) @@ -1089,11 +1124,20 @@ static void print_nego(const unsigned char *msg, int per, int off, int width) printk("width = %d ", 8 << msg[width]); } +static void print_ptr(const unsigned char *msg, int msb, const char *desc) +{ + int ptr = (msg[msb] << 24) | (msg[msb+1] << 16) | (msg[msb+2] << 8) | + msg[msb+3]; + printk("%s = %d ", desc, ptr); +} + int spi_print_msg(const unsigned char *msg) { - int len = 0, i; + int len = 1, i; if (msg[0] == EXTENDED_MESSAGE) { - len = 3 + msg[1]; + len = 2 + msg[1]; + if (len == 2) + len += 256; if (msg[2] < ARRAY_SIZE(extended_msgs)) printk ("%s ", extended_msgs[msg[2]]); else @@ -1101,8 +1145,7 @@ int spi_print_msg(const unsigned char *msg) (int) msg[2]); switch (msg[2]) { case EXTENDED_MODIFY_DATA_POINTER: - printk("pointer = %d", (int) (msg[3] << 24) | - (msg[4] << 16) | (msg[5] << 8) | msg[6]); + print_ptr(msg, 3, "pointer"); break; case EXTENDED_SDTR: print_nego(msg, 3, 4, 0); @@ -1113,6 +1156,10 @@ int spi_print_msg(const unsigned char *msg) case EXTENDED_PPR: print_nego(msg, 3, 5, 6); break; + case EXTENDED_MODIFY_BIDI_DATA_PTR: + print_ptr(msg, 3, "out"); + print_ptr(msg, 7, "in"); + break; default: for (i = 2; i < len; ++i) printk("%02x ", msg[i]); @@ -1123,14 +1170,14 @@ int spi_print_msg(const unsigned char *msg) (msg[0] & 0x40) ? "" : "not ", (msg[0] & 0x20) ? "target routine" : "lun", msg[0] & 0x7); - len = 1; /* Normal One byte */ } else if (msg[0] < 0x1f) { - if (msg[0] < ARRAY_SIZE(one_byte_msgs)) - printk(one_byte_msgs[msg[0]]); + if (msg[0] < ARRAY_SIZE(one_byte_msgs) && one_byte_msgs[msg[0]]) + printk("%s ", one_byte_msgs[msg[0]]); else printk("reserved (%02x) ", msg[0]); - len = 1; + } else if (msg[0] == 0x55) { + printk("QAS Request "); /* Two byte */ } else if (msg[0] <= 0x2f) { if ((msg[0] - 0x20) < ARRAY_SIZE(two_byte_msgs)) @@ -1141,7 +1188,7 @@ int spi_print_msg(const unsigned char *msg) msg[0], msg[1]); len = 2; } else - printk("reserved"); + printk("reserved "); return len; } EXPORT_SYMBOL(spi_print_msg); @@ -1150,20 +1197,20 @@ EXPORT_SYMBOL(spi_print_msg); int spi_print_msg(const unsigned char *msg) { - int len = 0, i; + int len = 1, i; if (msg[0] == EXTENDED_MESSAGE) { - len = 3 + msg[1]; + len = 2 + msg[1]; + if (len == 2) + len += 256; for (i = 0; i < len; ++i) printk("%02x ", msg[i]); /* Identify */ } else if (msg[0] & 0x80) { printk("%02x ", msg[0]); - len = 1; /* Normal One byte */ - } else if (msg[0] < 0x1f) { + } else if ((msg[0] < 0x1f) || (msg[0] == 0x55)) { printk("%02x ", msg[0]); - len = 1; /* Two byte */ } else if (msg[0] <= 0x2f) { printk("%02x %02x", msg[0], msg[1]); @@ -1265,15 +1312,13 @@ static DECLARE_ANON_TRANSPORT_CLASS(spi_device_class, struct scsi_transport_template * spi_attach_transport(struct spi_function_template *ft) { - struct spi_internal *i = kmalloc(sizeof(struct spi_internal), - GFP_KERNEL); int count = 0; + struct spi_internal *i = kzalloc(sizeof(struct spi_internal), + GFP_KERNEL); + if (unlikely(!i)) return NULL; - memset(i, 0, sizeof(struct spi_internal)); - - i->t.target_attrs.ac.class = &spi_transport_class.class; i->t.target_attrs.ac.attrs = &i->attrs[0]; i->t.target_attrs.ac.match = spi_target_match; |