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Commit 59265656 authored by Rusty Russell's avatar Rusty Russell Committed by Linus Torvalds
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[PATCH] Janitoring drivers_acorn_scsi_fas216.c 

From:  Pablo Menichini <pablo@menichini.com.ar>
parent bdf27737
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Showing with 222 additions and 157 deletions
drivers/acorn/scsi/fas216.c
View file @ 59265656
/* /*
* linux/arch/arm/drivers/scsi/fas216.c * linux/drivers/acorn/scsi/fas216.c
* *
* Copyright (C) 1997-2000 Russell King * Copyright (C) 1997-2000 Russell King
* *
...@@ -308,11 +308,12 @@ static void print_debug_list(void) ...@@ -308,11 +308,12 @@ static void print_debug_list(void)
static void fas216_done(FAS216_Info *info, unsigned int result); static void fas216_done(FAS216_Info *info, unsigned int result);
/* Function: int fas216_clockrate(unsigned int clock) /**
* Purpose : calculate correct value to be written into clock conversion * fast216_clockrate - calculate clock conversion factor
* factor register. * @clock: clock speed in MHz
* Params : clock - clock speed in MHz *
* Returns : CLKF_ value * Calculate correct value to be written into clock conversion factor
* register. Returns CLKF_ value.
*/ */
static int fas216_clockrate(int clock) static int fas216_clockrate(int clock)
{ {
...@@ -326,10 +327,12 @@ static int fas216_clockrate(int clock) ...@@ -326,10 +327,12 @@ static int fas216_clockrate(int clock)
return clock; return clock;
} }
/* Function: unsigned short fas216_get_last_msg(FAS216_Info *info, int pos) /**
* Purpose : retrieve a last message from the list, using position in fifo * fas216_get_last_msg - retrive last message from the list
* Params : info - interface to search * @info: interface to search
* : pos - current fifo position * @pos: current fifo position
*
* Retrieve a last message from the list, using position in fifo.
*/ */
static inline unsigned short static inline unsigned short
fas216_get_last_msg(FAS216_Info *info, int pos) fas216_get_last_msg(FAS216_Info *info, int pos)
...@@ -356,12 +359,13 @@ fas216_get_last_msg(FAS216_Info *info, int pos) ...@@ -356,12 +359,13 @@ fas216_get_last_msg(FAS216_Info *info, int pos)
return packed_msg; return packed_msg;
} }
/* Function: int fas216_syncperiod(FAS216_Info *info, int ns) /**
* Purpose : Calculate value to be loaded into the STP register * fas216_syncperiod - calculate STP register value
* for a given period in ns * @info: state structure for interface connected to device
* Params : info - state structure for interface connected to device * @ns: period in ns (between subsequent bytes)
* : ns - period in ns (between subsequent bytes) *
* Returns : Value suitable for REG_STP * Calculate value to be loaded into the STP register for a given period
* in ns. Returns a value suitable for REG_STP.
*/ */
static int fas216_syncperiod(FAS216_Info *info, int ns) static int fas216_syncperiod(FAS216_Info *info, int ns)
{ {
...@@ -377,10 +381,12 @@ static int fas216_syncperiod(FAS216_Info *info, int ns) ...@@ -377,10 +381,12 @@ static int fas216_syncperiod(FAS216_Info *info, int ns)
return value & 31; return value & 31;
} }
/* Function: void fas216_set_sync(FAS216_Info *info, int target) /**
* Purpose : Correctly setup FAS216 chip for specified transfer period. * fas216_set_sync - setup FAS216 chip for specified transfer period.
* Params : info - state structure for interface * @info: state structure for interface connected to device
* : target - target * @target: target
*
* Correctly setup FAS216 chip for specified transfer period.
* Notes : we need to switch the chip out of FASTSCSI mode if we have * Notes : we need to switch the chip out of FASTSCSI mode if we have
* a transfer period >= 200ns - otherwise the chip will violate * a transfer period >= 200ns - otherwise the chip will violate
* the SCSI timings. * the SCSI timings.
...@@ -419,10 +425,12 @@ static void fas216_set_sync(FAS216_Info *info, int target) ...@@ -419,10 +425,12 @@ static void fas216_set_sync(FAS216_Info *info, int target)
* we have synchronous transfers disabled for this device. * we have synchronous transfers disabled for this device.
*/ */
/* Function: void fas216_handlesync(FAS216_Info *info, char *msg) /**
* Purpose : Handle a synchronous transfer message from the target * fas216_handlesync - Handle a synchronous transfer message
* Params : info - state structure for interface * @info: state structure for interface
* : msg - message from target * @ms: message from target
*
* Handle a synchronous transfer message from the target
*/ */
static void fas216_handlesync(FAS216_Info *info, char *msg) static void fas216_handlesync(FAS216_Info *info, char *msg)
{ {
...@@ -530,10 +538,12 @@ static void fas216_handlesync(FAS216_Info *info, char *msg) ...@@ -530,10 +538,12 @@ static void fas216_handlesync(FAS216_Info *info, char *msg)
} }
} }
/* Function: void fas216_handlewide(FAS216_Info *info, char *msg) /**
* Purpose : Handle a wide transfer message from the target * fas216_handlewide - Handle a wide transfer message
* Params : info - state structure for interface * @info: state structure for interface
* : msg - message from target * @msg: message from target
*
* Handle a wide transfer message from the target
*/ */
static void fas216_handlewide(FAS216_Info *info, char *msg) static void fas216_handlewide(FAS216_Info *info, char *msg)
{ {
...@@ -627,10 +637,12 @@ static void fas216_handlewide(FAS216_Info *info, char *msg) ...@@ -627,10 +637,12 @@ static void fas216_handlewide(FAS216_Info *info, char *msg)
} }
} }
/* Function: void fas216_updateptrs(FAS216_Info *info, int bytes_transferred) /**
* Purpose : update data pointers after transfer suspended/paused * fas216_updateptrs - update data pointers after transfer suspended/paused
* Params : info - interface's local pointer to update * @info: interface's local pointer to update
* bytes_transferred - number of bytes transferred * @bytes_transferred: number of bytes transferred
*
* Update data pointers after transfer suspended/paused
*/ */
static void fas216_updateptrs(FAS216_Info *info, int bytes_transferred) static void fas216_updateptrs(FAS216_Info *info, int bytes_transferred)
{ {
...@@ -664,11 +676,13 @@ static void fas216_updateptrs(FAS216_Info *info, int bytes_transferred) ...@@ -664,11 +676,13 @@ static void fas216_updateptrs(FAS216_Info *info, int bytes_transferred)
SCp->ptr = NULL; SCp->ptr = NULL;
} }
/* Function: void fas216_pio(FAS216_Info *info, fasdmadir_t direction) /**
* Purpose : transfer data off of/on to card using programmed IO * fas216_pio - transfer data off of/on to card using programmed IO
* Params : info - interface to transfer data to/from * @info: interface to transfer data to/from
* direction - direction to transfer data (DMA_OUT/DMA_IN) * @direction: direction to transfer data (DMA_OUT/DMA_IN)
* Notes : this is incredibly slow *
* Transfer data off of/on to card using programmed IO.
* Notes: this is incredibly slow.
*/ */
static void fas216_pio(FAS216_Info *info, fasdmadir_t direction) static void fas216_pio(FAS216_Info *info, fasdmadir_t direction)
{ {
...@@ -730,11 +744,12 @@ static void fas216_cleanuptransfer(FAS216_Info *info) ...@@ -730,11 +744,12 @@ static void fas216_cleanuptransfer(FAS216_Info *info)
info->dma.transfer_type = fasdma_none; info->dma.transfer_type = fasdma_none;
} }
/* Function: void fas216_starttransfer(FAS216_Info *info, /**
* fasdmadir_t direction) * fas216_starttransfer - Start a DMA/PIO transfer off of/on to card
* Purpose : Start a DMA/PIO transfer off of/on to card * @info: interface from which device disconnected from
* Params : info - interface from which device disconnected from * @direction: transfer direction (DMA_OUT/DMA_IN)
* direction - transfer direction (DMA_OUT/DMA_IN) *
* Start a DMA/PIO transfer off of/on to card
*/ */
static void fas216_starttransfer(FAS216_Info *info, fasdmadir_t direction) static void fas216_starttransfer(FAS216_Info *info, fasdmadir_t direction)
{ {
...@@ -824,9 +839,11 @@ static void fas216_starttransfer(FAS216_Info *info, fasdmadir_t direction) ...@@ -824,9 +839,11 @@ static void fas216_starttransfer(FAS216_Info *info, fasdmadir_t direction)
} }
} }
/* Function: void fas216_stoptransfer(FAS216_Info *info) /**
* Purpose : Stop a DMA transfer onto / off of the card * fas216_stoptransfer - Stop a DMA transfer onto / off of the card
* Params : info - interface from which device disconnected from * @info: interface from which device disconnected from
*
* Stop a DMA transfer onto / off of the card
*/ */
static void fas216_stoptransfer(FAS216_Info *info) static void fas216_stoptransfer(FAS216_Info *info)
{ {
...@@ -856,9 +873,11 @@ static void fas216_aborttransfer(FAS216_Info *info) ...@@ -856,9 +873,11 @@ static void fas216_aborttransfer(FAS216_Info *info)
fas216_cmd(info, CMD_FLUSHFIFO); fas216_cmd(info, CMD_FLUSHFIFO);
} }
/* Function: void fas216_disconnected_intr(FAS216_Info *info) /**
* Purpose : handle device disconnection * fas216_disconnected_intr - handle device disconnection
* Params : info - interface from which device disconnected from * @info: interface from which device disconnected from
*
* Handle device disconnection
*/ */
static void fas216_disconnect_intr(FAS216_Info *info) static void fas216_disconnect_intr(FAS216_Info *info)
{ {
...@@ -905,9 +924,11 @@ static void fas216_disconnect_intr(FAS216_Info *info) ...@@ -905,9 +924,11 @@ static void fas216_disconnect_intr(FAS216_Info *info)
} }
} }
/* Function: void fas216_reselected_intr(FAS216_Info *info) /**
* Purpose : Start reconnection of a device * fas216_reselected_intr - start reconnection of a device
* Params : info - interface which was reselected * @info: interface which was reselected
*
* Start reconnection of a device
*/ */
static void static void
fas216_reselected_intr(FAS216_Info *info) fas216_reselected_intr(FAS216_Info *info)
...@@ -1018,9 +1039,11 @@ fas216_reselected_intr(FAS216_Info *info) ...@@ -1018,9 +1039,11 @@ fas216_reselected_intr(FAS216_Info *info)
fas216_cmd(info, CMD_MSGACCEPTED); fas216_cmd(info, CMD_MSGACCEPTED);
} }
/* Function: void fas216_finish_reconnect(FAS216_Info *info) /**
* Purpose : finish reconnection sequence for device * fas216_finish_reconnect - finish reconnection sequence for device
* Params : info - interface which caused function done interrupt * @info: interface which caused function done interrupt
*
* Finish reconnection sequence for device
*/ */
static void static void
fas216_finish_reconnect(FAS216_Info *info) fas216_finish_reconnect(FAS216_Info *info)
...@@ -1258,9 +1281,11 @@ static int fas216_get_msg_byte(FAS216_Info *info) ...@@ -1258,9 +1281,11 @@ static int fas216_get_msg_byte(FAS216_Info *info)
return -3; return -3;
} }
/* Function: void fas216_message(FAS216_Info *info) /**
* Purpose : handle a function done interrupt from FAS216 chip * fas216_message - handle a function done interrupt from FAS216 chip
* Params : info - interface which caused function done interrupt * @info: interface which caused function done interrupt
*
* Handle a function done interrupt from FAS216 chip
*/ */
static void fas216_message(FAS216_Info *info) static void fas216_message(FAS216_Info *info)
{ {
...@@ -1326,9 +1351,11 @@ static void fas216_message(FAS216_Info *info) ...@@ -1326,9 +1351,11 @@ static void fas216_message(FAS216_Info *info)
return; return;
} }
/* Function: void fas216_send_command(FAS216_Info *info) /**
* Purpose : send a command to a target after all message bytes have been sent * fas216_send_command - send command after all message bytes have been sent
* Params : info - interface which caused bus service * @info: interface which caused bus service
*
* Send a command to a target after all message bytes have been sent
*/ */
static void fas216_send_command(FAS216_Info *info) static void fas216_send_command(FAS216_Info *info)
{ {
...@@ -1348,10 +1375,12 @@ static void fas216_send_command(FAS216_Info *info) ...@@ -1348,10 +1375,12 @@ static void fas216_send_command(FAS216_Info *info)
info->scsi.phase = PHASE_COMMAND; info->scsi.phase = PHASE_COMMAND;
} }
/* Function: void fas216_send_messageout(FAS216_Info *info, int start) /**
* Purpose : handle bus service to send a message * fas216_send_messageout - handle bus service to send a message
* Params : info - interface which caused bus service * @info: interface which caused bus service
* Note : We do not allow the device to change the data direction! *
* Handle bus service to send a message.
* Note: We do not allow the device to change the data direction!
*/ */
static void fas216_send_messageout(FAS216_Info *info, int start) static void fas216_send_messageout(FAS216_Info *info, int start)
{ {
...@@ -1382,11 +1411,13 @@ static void fas216_send_messageout(FAS216_Info *info, int start) ...@@ -1382,11 +1411,13 @@ static void fas216_send_messageout(FAS216_Info *info, int start)
info->scsi.phase = PHASE_MSGOUT; info->scsi.phase = PHASE_MSGOUT;
} }
/* Function: void fas216_busservice_intr(FAS216_Info *info, unsigned int stat, unsigned int ssr) /**
* Purpose : handle a bus service interrupt from FAS216 chip * fas216_busservice_intr - handle bus service interrupt from FAS216 chip
* Params : info - interface which caused bus service interrupt * @info: interface which caused bus service interrupt
* stat - Status register contents * @stat: Status register contents
* ssr - SCSI Status register contents * @ssr: SCSI Status register contents
*
* Handle a bus service interrupt from FAS216 chip
*/ */
static void fas216_busservice_intr(FAS216_Info *info, unsigned int stat, unsigned int ssr) static void fas216_busservice_intr(FAS216_Info *info, unsigned int stat, unsigned int ssr)
{ {
...@@ -1589,11 +1620,13 @@ static void fas216_busservice_intr(FAS216_Info *info, unsigned int stat, unsigne ...@@ -1589,11 +1620,13 @@ static void fas216_busservice_intr(FAS216_Info *info, unsigned int stat, unsigne
fas216_done(info, DID_ERROR); fas216_done(info, DID_ERROR);
} }
/* Function: void fas216_funcdone_intr(FAS216_Info *info, unsigned int stat, unsigned int ssr) /**
* Purpose : handle a function done interrupt from FAS216 chip * fas216_funcdone_intr - handle a function done interrupt from FAS216 chip
* Params : info - interface which caused function done interrupt * @info: interface which caused function done interrupt
* stat - Status register contents * @stat: Status register contents
* ssr - SCSI Status register contents * @ssr: SCSI Status register contents
*
* Handle a function done interrupt from FAS216 chip
*/ */
static void fas216_funcdone_intr(FAS216_Info *info, unsigned int stat, unsigned int ssr) static void fas216_funcdone_intr(FAS216_Info *info, unsigned int stat, unsigned int ssr)
{ {
...@@ -1681,9 +1714,11 @@ static void fas216_bus_reset(FAS216_Info *info) ...@@ -1681,9 +1714,11 @@ static void fas216_bus_reset(FAS216_Info *info)
wake_up(&info->eh_wait); wake_up(&info->eh_wait);
} }
/* Function: void fas216_intr(struct Scsi_Host *instance) /**
* Purpose : handle interrupts from the interface to progress a command * fas216_intr - handle interrupts to progress a command
* Params : instance - interface to service * @instance: interface to service
*
* Handle interrupts from the interface to progress a command
*/ */
void fas216_intr(struct Scsi_Host *instance) void fas216_intr(struct Scsi_Host *instance)
{ {
...@@ -1954,10 +1989,12 @@ static void fas216_do_bus_device_reset(FAS216_Info *info, Scsi_Cmnd *SCpnt) ...@@ -1954,10 +1989,12 @@ static void fas216_do_bus_device_reset(FAS216_Info *info, Scsi_Cmnd *SCpnt)
fas216_cmd(info, CMD_SELECTATNSTOP); fas216_cmd(info, CMD_SELECTATNSTOP);
} }
/* Function: void fas216_kick(FAS216_Info *info) /**
* Purpose : kick a command to the interface - interface should be idle * fas216_kick - kick a command to the interface
* Params : info - our host interface to kick * @info: our host interface to kick
* Notes : Interrupts are always disabled! *
* kick a command to the interface, interface should be idle.
* Notes: Interrupts are always disabled!
*/ */
static void fas216_kick(FAS216_Info *info) static void fas216_kick(FAS216_Info *info)
{ {
...@@ -2052,11 +2089,13 @@ fas216_devicereset_done(FAS216_Info *info, Scsi_Cmnd *SCpnt, unsigned int result ...@@ -2052,11 +2089,13 @@ fas216_devicereset_done(FAS216_Info *info, Scsi_Cmnd *SCpnt, unsigned int result
wake_up(&info->eh_wait); wake_up(&info->eh_wait);
} }
/* Function: void fas216_rq_sns_done(info, SCpnt, result) /**
* Purpose : Finish processing automatic request sense command * fas216_rq_sns_done - Finish processing automatic request sense command
* Params : info - interface that completed * @info: interface that completed
* SCpnt - command that completed * @SCpnt: command that completed
* result - driver byte of result * @result: driver byte of result
*
* Finish processing automatic request sense command
*/ */
static void static void
fas216_rq_sns_done(FAS216_Info *info, Scsi_Cmnd *SCpnt, unsigned int result) fas216_rq_sns_done(FAS216_Info *info, Scsi_Cmnd *SCpnt, unsigned int result)
...@@ -2083,11 +2122,13 @@ fas216_rq_sns_done(FAS216_Info *info, Scsi_Cmnd *SCpnt, unsigned int result) ...@@ -2083,11 +2122,13 @@ fas216_rq_sns_done(FAS216_Info *info, Scsi_Cmnd *SCpnt, unsigned int result)
SCpnt->scsi_done(SCpnt); SCpnt->scsi_done(SCpnt);
} }
/* Function: void fas216_std_done(info, SCpnt, result) /**
* Purpose : Finish processing of standard command * fas216_std_done - finish processing of standard command
* Params : info - interface that completed * @info: interface that completed
* SCpnt - command that completed * @SCpnt: command that completed
* result - driver byte of result * @result: driver byte of result
*
* Finish processing of standard command
*/ */
static void static void
fas216_std_done(FAS216_Info *info, Scsi_Cmnd *SCpnt, unsigned int result) fas216_std_done(FAS216_Info *info, Scsi_Cmnd *SCpnt, unsigned int result)
...@@ -2188,10 +2229,12 @@ fas216_std_done(FAS216_Info *info, Scsi_Cmnd *SCpnt, unsigned int result) ...@@ -2188,10 +2229,12 @@ fas216_std_done(FAS216_Info *info, Scsi_Cmnd *SCpnt, unsigned int result)
info->reqSCpnt = SCpnt; info->reqSCpnt = SCpnt;
} }
/* Function: void fas216_done(FAS216_Info *info, unsigned int result) /**
* Purpose : complete processing for current command * fas216_done - complete processing for current command
* Params : info - interface that completed * @info: interface that completed
* result - driver byte of result * @result: driver byte of result
*
* Complete processing for current command
*/ */
static void fas216_done(FAS216_Info *info, unsigned int result) static void fas216_done(FAS216_Info *info, unsigned int result)
{ {
...@@ -2251,12 +2294,14 @@ static void fas216_done(FAS216_Info *info, unsigned int result) ...@@ -2251,12 +2294,14 @@ static void fas216_done(FAS216_Info *info, unsigned int result)
info->host->host_no); info->host->host_no);
} }
/* Function: int fas216_queue_command(Scsi_Cmnd *SCpnt, void (*done)(Scsi_Cmnd *)) /**
* Purpose : queue a command for adapter to process. * fas216_queue_command - queue a command for adapter to process.
* Params : SCpnt - Command to queue * @SCpnt: Command to queue
* done - done function to call once command is complete * @done: done function to call once command is complete
* Returns : 0 - success, else error *
* Notes : io_request_lock is held, interrupts are disabled. * Queue a command for adapter to process.
* Returns: 0 in success, else error.
* Notes: io_request_lock is held, interrupts are disabled.
*/ */
int fas216_queue_command(Scsi_Cmnd *SCpnt, void (*done)(Scsi_Cmnd *)) int fas216_queue_command(Scsi_Cmnd *SCpnt, void (*done)(Scsi_Cmnd *))
{ {
...@@ -2304,9 +2349,11 @@ int fas216_queue_command(Scsi_Cmnd *SCpnt, void (*done)(Scsi_Cmnd *)) ...@@ -2304,9 +2349,11 @@ int fas216_queue_command(Scsi_Cmnd *SCpnt, void (*done)(Scsi_Cmnd *))
return result; return result;
} }
/* Function: void fas216_internal_done(Scsi_Cmnd *SCpnt) /**
* Purpose : trigger restart of a waiting thread in fas216_command * fas216_internal_done - trigger restart of a waiting thread in fas216_command
* Params : SCpnt - Command to wake * @SCpnt: Command to wake
*
* Trigger restart of a waiting thread in fas216_command
*/ */
static void fas216_internal_done(Scsi_Cmnd *SCpnt) static void fas216_internal_done(Scsi_Cmnd *SCpnt)
{ {
...@@ -2317,11 +2364,13 @@ static void fas216_internal_done(Scsi_Cmnd *SCpnt) ...@@ -2317,11 +2364,13 @@ static void fas216_internal_done(Scsi_Cmnd *SCpnt)
info->internal_done = 1; info->internal_done = 1;
} }
/* Function: int fas216_command(Scsi_Cmnd *SCpnt) /**
* Purpose : queue a command for adapter to process. * fas216_command - queue a command for adapter to process.
* Params : SCpnt - Command to queue * @SCpnt: Command to queue
* Returns : scsi result code *
* Notes : io_request_lock is held, interrupts are disabled. * Qqueue a command for adapter to process.
* Returns: scsi result code.
* Notes: io_request_lock is held, interrupts are disabled.
*/ */
int fas216_command(Scsi_Cmnd *SCpnt) int fas216_command(Scsi_Cmnd *SCpnt)
{ {
...@@ -2394,11 +2443,12 @@ enum res_find { ...@@ -2394,11 +2443,12 @@ enum res_find {
res_hw_abort /* command on disconnected dev */ res_hw_abort /* command on disconnected dev */
}; };
/* /**
* Prototype: enum res_find fas216_do_abort(FAS216_Info *info, Scsi_Cmnd *SCpnt) * fas216_do_abort - decide how to abort a command
* Purpose : decide how to abort a command * @SCpnt: command to abort
* Params : SCpnt - command to abort *
* Returns : abort status * Decide how to abort a command.
* Returns: abort status
*/ */
static enum res_find fas216_find_command(FAS216_Info *info, Scsi_Cmnd *SCpnt) static enum res_find fas216_find_command(FAS216_Info *info, Scsi_Cmnd *SCpnt)
{ {
...@@ -2459,11 +2509,13 @@ static enum res_find fas216_find_command(FAS216_Info *info, Scsi_Cmnd *SCpnt) ...@@ -2459,11 +2509,13 @@ static enum res_find fas216_find_command(FAS216_Info *info, Scsi_Cmnd *SCpnt)
return res; return res;
} }
/* Function: int fas216_eh_abort(Scsi_Cmnd *SCpnt) /**
* Purpose : abort this command * fas216_eh_abort - abort this command
* Params : SCpnt - command to abort * @SCpnt: command to abort
* Returns : FAILED if unable to abort *
* Notes : io_request_lock is taken, and irqs are disabled * Abort this command.
* Returns: FAILED if unable to abort
* Notes: io_request_lock is taken, and irqs are disabled
*/ */
int fas216_eh_abort(Scsi_Cmnd *SCpnt) int fas216_eh_abort(Scsi_Cmnd *SCpnt)
{ {
...@@ -2513,12 +2565,14 @@ int fas216_eh_abort(Scsi_Cmnd *SCpnt) ...@@ -2513,12 +2565,14 @@ int fas216_eh_abort(Scsi_Cmnd *SCpnt)
return result; return result;
} }
/* Function: int fas216_eh_device_reset(Scsi_Cmnd *SCpnt) /**
* Purpose : Reset the device associated with this command * fas216_eh_device_reset - Reset the device associated with this command
* Params : SCpnt - command specifing device to reset * @SCpnt: command specifing device to reset
* Returns : FAILED if unable to reset *
* Notes : We won't be re-entered, so we'll only have one device * Reset the device associated with this command.
* reset on the go at one time. * Returns: FAILED if unable to reset.
* Notes: We won't be re-entered, so we'll only have one device
* reset on the go at one time.
*/ */
int fas216_eh_device_reset(Scsi_Cmnd *SCpnt) int fas216_eh_device_reset(Scsi_Cmnd *SCpnt)
{ {
...@@ -2593,11 +2647,13 @@ int fas216_eh_device_reset(Scsi_Cmnd *SCpnt) ...@@ -2593,11 +2647,13 @@ int fas216_eh_device_reset(Scsi_Cmnd *SCpnt)
return res; return res;
} }
/* Function: int fas216_eh_bus_reset(Scsi_Cmnd *SCpnt) /**
* Purpose : Reset the bus associated with the command * fas216_eh_bus_reset - Reset the bus associated with the command
* Params : SCpnt - command specifing bus to reset * @SCpnt: command specifing bus to reset
* Returns : FAILED if unable to reset *
* Notes : Further commands are blocked. * Reset the bus associated with the command.
* Returns: FAILED if unable to reset.
* Notes: Further commands are blocked.
*/ */
int fas216_eh_bus_reset(Scsi_Cmnd *SCpnt) int fas216_eh_bus_reset(Scsi_Cmnd *SCpnt)
{ {
...@@ -2670,9 +2726,11 @@ int fas216_eh_bus_reset(Scsi_Cmnd *SCpnt) ...@@ -2670,9 +2726,11 @@ int fas216_eh_bus_reset(Scsi_Cmnd *SCpnt)
return info->rst_bus_status == 1 ? SUCCESS : FAILED; return info->rst_bus_status == 1 ? SUCCESS : FAILED;
} }
/* Function: void fas216_init_chip(FAS216_Info *info) /**
* Purpose : Initialise FAS216 state after reset * fas216_init_chip - Initialise FAS216 state after reset
* Params : info - state structure for interface * @info: state structure for interface
*
* Initialise FAS216 state after reset
*/ */
static void fas216_init_chip(FAS216_Info *info) static void fas216_init_chip(FAS216_Info *info)
{ {
...@@ -2686,11 +2744,13 @@ static void fas216_init_chip(FAS216_Info *info) ...@@ -2686,11 +2744,13 @@ static void fas216_init_chip(FAS216_Info *info)
outb(info->scsi.cfg[0], REG_CNTL1(info)); outb(info->scsi.cfg[0], REG_CNTL1(info));
} }
/* Function: int fas216_eh_host_reset(Scsi_Cmnd *SCpnt) /**
* Purpose : Reset the host associated with this command * fas216_eh_host_reset - Reset the host associated with this command
* Params : SCpnt - command specifing host to reset * @SCpnt: command specifing host to reset
* Returns : FAILED if unable to reset *
* Notes : io_request_lock is taken, and irqs are disabled * Reset the host associated with this command.
* Returns: FAILED if unable to reset.
* Notes: io_request_lock is taken, and irqs are disabled
*/ */
int fas216_eh_host_reset(Scsi_Cmnd *SCpnt) int fas216_eh_host_reset(Scsi_Cmnd *SCpnt)
{ {
...@@ -2826,9 +2886,11 @@ static int fas216_detect_type(FAS216_Info *info) ...@@ -2826,9 +2886,11 @@ static int fas216_detect_type(FAS216_Info *info)
return TYPE_NCR53C9x; return TYPE_NCR53C9x;
} }
/* Function: void fas216_reset_state(FAS216_Info *info) /**
* Purpose : Initialise driver internal state * fas216_reset_state - Initialise driver internal state
* Params : info - state to initialise * @info: state to initialise
*
* Initialise driver internal state
*/ */
static void fas216_reset_state(FAS216_Info *info) static void fas216_reset_state(FAS216_Info *info)
{ {
...@@ -2864,10 +2926,12 @@ static void fas216_reset_state(FAS216_Info *info) ...@@ -2864,10 +2926,12 @@ static void fas216_reset_state(FAS216_Info *info)
info->origSCpnt = NULL; info->origSCpnt = NULL;
} }
/* Function: int fas216_init(struct Scsi_Host *instance) /**
* Purpose : initialise FAS/NCR/AMD SCSI ic. * fas216_init - initialise FAS/NCR/AMD SCSI ic.
* Params : instance - a driver-specific filled-out structure * @instance: a driver-specific filled-out structure
* Returns : 0 on success *
* Initialise FAS/NCR/AMD SCSI ic.
* Returns: 0 on success
*/ */
int fas216_init(struct Scsi_Host *instance) int fas216_init(struct Scsi_Host *instance)
{ {
...@@ -2937,11 +3001,12 @@ int fas216_init(struct Scsi_Host *instance) ...@@ -2937,11 +3001,12 @@ int fas216_init(struct Scsi_Host *instance)
return 0; return 0;
} }
/* Function: int fas216_release(struct Scsi_Host *instance) /**
* Purpose : release all resources and put everything to bed for * fas216_release - release all resources for FAS/NCR/AMD SCSI ic.
* FAS/NCR/AMD SCSI ic. * @instance: a driver-specific filled-out structure
* Params : instance - a driver-specific filled-out structure *
* Returns : 0 on success * release all resources and put everything to bed for FAS/NCR/AMD SCSI ic,
* Returns: 0 on success.
*/ */
int fas216_release(struct Scsi_Host *instance) int fas216_release(struct Scsi_Host *instance)
{ {
...@@ -2956,13 +3021,13 @@ int fas216_release(struct Scsi_Host *instance) ...@@ -2956,13 +3021,13 @@ int fas216_release(struct Scsi_Host *instance)
return 0; return 0;
} }
/* /**
* Function: int fas216_info(FAS216_Info *info, char *buffer) * fas216_info - generate a string containing information about host.
* Purpose : generate a string containing information about this * @info: FAS216 host information
* host. * @buffer: string buffer to build string
* Params : info - FAS216 host information *
* buffer - string buffer to build string * Generate a string containing information about this host.
* Returns : size of built string * Returns: size of built string
*/ */
int fas216_info(FAS216_Info *info, char *buffer) int fas216_info(FAS216_Info *info, char *buffer)
{ {
......
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