From: Finn Thain <fthain@telegraphics.com.au>
To: "James E.J. Bottomley" <JBottomley@odin.com>,
Michael Schmitz <schmitzmic@gmail.com>,
<linux-m68k@vger.kernel.org>, <linux-scsi@vger.kernel.org>,
<linux-kernel@vger.kernel.org>
Subject: [PATCH v2 58/72] ncr5380: Refactor command completion
Date: Sun, 06 Dec 2015 12:32:24 +1100 [thread overview]
Message-ID: <20151206013141.355677245@telegraphics.com.au> (raw)
In-Reply-To: 20151206013126.995379403@telegraphics.com.au
[-- Attachment #1: ncr5380-complete_cmd --]
[-- Type: text/plain, Size: 6781 bytes --]
Implement a 'complete_cmd' function to complete commands. This is needed
by the following patch; the new function provides a site for the logic
needed to correctly handle REQUEST SENSE commands.
Signed-off-by: Finn Thain <fthain@telegraphics.com.au>
---
drivers/scsi/NCR5380.c | 31 ++++++++++++++++++++++------
drivers/scsi/atari_NCR5380.c | 46 ++++++++++++++++++++++++++++---------------
2 files changed, 55 insertions(+), 22 deletions(-)
Index: linux/drivers/scsi/atari_NCR5380.c
===================================================================
--- linux.orig/drivers/scsi/atari_NCR5380.c 2015-12-06 12:30:58.000000000 +1100
+++ linux/drivers/scsi/atari_NCR5380.c 2015-12-06 12:31:01.000000000 +1100
@@ -760,6 +760,27 @@ static void NCR5380_exit(struct Scsi_Hos
}
/**
+ * complete_cmd - finish processing a command and return it to the SCSI ML
+ * @instance: the host instance
+ * @cmd: command to complete
+ */
+
+static void complete_cmd(struct Scsi_Host *instance,
+ struct scsi_cmnd *cmd)
+{
+ struct NCR5380_hostdata *hostdata = shost_priv(instance);
+
+ dsprintk(NDEBUG_QUEUES, instance, "complete_cmd: cmd %p\n", cmd);
+
+#ifdef SUPPORT_TAGS
+ cmd_free_tag(cmd);
+#else
+ hostdata->busy[scmd_id(cmd)] &= ~(1 << cmd->device->lun);
+#endif
+ cmd->scsi_done(cmd);
+}
+
+/**
* NCR5380_queue_command - queue a command
* @instance: the relevant SCSI adapter
* @cmd: SCSI command
@@ -1347,10 +1368,7 @@ static int NCR5380_select(struct Scsi_Ho
spin_lock_irq(&hostdata->lock);
NCR5380_write(INITIATOR_COMMAND_REG, ICR_BASE);
cmd->result = DID_BAD_TARGET << 16;
-#ifdef SUPPORT_TAGS
- cmd_free_tag(cmd);
-#endif
- cmd->scsi_done(cmd);
+ complete_cmd(instance, cmd);
NCR5380_write(SELECT_ENABLE_REG, hostdata->id_mask);
dprintk(NDEBUG_SELECTION, "scsi%d: target did not respond within 250ms\n", HOSTNO);
return 0;
@@ -1861,7 +1879,7 @@ static void NCR5380_information_transfer
sink = 1;
do_abort(instance);
cmd->result = DID_ERROR << 16;
- cmd->scsi_done(cmd);
+ complete_cmd(instance, cmd);
return;
#endif
case PHASE_DATAIN:
@@ -1921,7 +1939,7 @@ static void NCR5380_information_transfer
sink = 1;
do_abort(instance);
cmd->result = DID_ERROR << 16;
- cmd->scsi_done(cmd);
+ complete_cmd(instance, cmd);
/* XXX - need to source or sink data here, as appropriate */
} else {
#ifdef REAL_DMA
@@ -1977,8 +1995,6 @@ static void NCR5380_information_transfer
if (ta->queue_size > ta->nr_allocated)
ta->queue_size = ta->nr_allocated;
}
-#else
- hostdata->busy[cmd->device->id] &= ~(1 << cmd->device->lun);
#endif
/*
@@ -2016,8 +2032,13 @@ static void NCR5380_information_transfer
dsprintk(NDEBUG_AUTOSENSE | NDEBUG_QUEUES,
instance, "REQUEST SENSE cmd %p added to head of issue queue\n",
cmd);
+#ifdef SUPPORT_TAGS
+ cmd_free_tag(cmd);
+#else
+ hostdata->busy[cmd->device->id] &= ~(1 << cmd->device->lun);
+#endif
} else {
- cmd->scsi_done(cmd);
+ complete_cmd(instance, cmd);
}
/*
@@ -2188,15 +2209,10 @@ static void NCR5380_information_transfer
hostdata->last_message = msgout;
NCR5380_transfer_pio(instance, &phase, &len, &data);
if (msgout == ABORT) {
-#ifdef SUPPORT_TAGS
- cmd_free_tag(cmd);
-#else
- hostdata->busy[cmd->device->id] &= ~(1 << cmd->device->lun);
-#endif
hostdata->connected = NULL;
cmd->result = DID_ERROR << 16;
+ complete_cmd(instance, cmd);
maybe_release_dma_irq(instance);
- cmd->scsi_done(cmd);
NCR5380_write(SELECT_ENABLE_REG, hostdata->id_mask);
return;
}
Index: linux/drivers/scsi/NCR5380.c
===================================================================
--- linux.orig/drivers/scsi/NCR5380.c 2015-12-06 12:30:58.000000000 +1100
+++ linux/drivers/scsi/NCR5380.c 2015-12-06 12:31:01.000000000 +1100
@@ -721,6 +721,24 @@ static void NCR5380_exit(struct Scsi_Hos
}
/**
+ * complete_cmd - finish processing a command and return it to the SCSI ML
+ * @instance: the host instance
+ * @cmd: command to complete
+ */
+
+static void complete_cmd(struct Scsi_Host *instance,
+ struct scsi_cmnd *cmd)
+{
+ struct NCR5380_hostdata *hostdata = shost_priv(instance);
+
+ dsprintk(NDEBUG_QUEUES, instance, "complete_cmd: cmd %p\n", cmd);
+
+ hostdata->busy[scmd_id(cmd)] &= ~(1 << cmd->device->lun);
+
+ cmd->scsi_done(cmd);
+}
+
+/**
* NCR5380_queue_command - queue a command
* @instance: the relevant SCSI adapter
* @cmd: SCSI command
@@ -1166,7 +1184,7 @@ static int NCR5380_select(struct Scsi_Ho
spin_lock_irq(&hostdata->lock);
NCR5380_write(INITIATOR_COMMAND_REG, ICR_BASE);
cmd->result = DID_BAD_TARGET << 16;
- cmd->scsi_done(cmd);
+ complete_cmd(instance, cmd);
NCR5380_write(SELECT_ENABLE_REG, hostdata->id_mask);
dprintk(NDEBUG_SELECTION, "scsi%d : target did not respond within 250ms\n",
instance->host_no);
@@ -1754,7 +1772,7 @@ static void NCR5380_information_transfer
sink = 1;
do_abort(instance);
cmd->result = DID_ERROR << 16;
- cmd->scsi_done(cmd);
+ complete_cmd(instance, cmd);
return;
#endif
case PHASE_DATAIN:
@@ -1799,7 +1817,7 @@ static void NCR5380_information_transfer
sink = 1;
do_abort(instance);
cmd->result = DID_ERROR << 16;
- cmd->scsi_done(cmd);
+ complete_cmd(instance, cmd);
/* XXX - need to source or sink data here, as appropriate */
} else
cmd->SCp.this_residual -= transfersize - len;
@@ -1829,7 +1847,6 @@ static void NCR5380_information_transfer
cmd, scmd_id(cmd), cmd->device->lun);
hostdata->connected = NULL;
- hostdata->busy[cmd->device->id] &= ~(1 << (cmd->device->lun & 0xFF));
/*
* I'm not sure what the correct thing to do here is :
@@ -1865,8 +1882,9 @@ static void NCR5380_information_transfer
dsprintk(NDEBUG_AUTOSENSE | NDEBUG_QUEUES,
instance, "REQUEST SENSE cmd %p added to head of issue queue\n",
cmd);
+ hostdata->busy[cmd->device->id] &= ~(1 << (cmd->device->lun & 0xFF));
} else {
- cmd->scsi_done(cmd);
+ complete_cmd(instance, cmd);
}
/*
@@ -2013,10 +2031,9 @@ static void NCR5380_information_transfer
hostdata->last_message = msgout;
NCR5380_transfer_pio(instance, &phase, &len, &data);
if (msgout == ABORT) {
- hostdata->busy[cmd->device->id] &= ~(1 << (cmd->device->lun & 0xFF));
hostdata->connected = NULL;
cmd->result = DID_ERROR << 16;
- cmd->scsi_done(cmd);
+ complete_cmd(instance, cmd);
NCR5380_write(SELECT_ENABLE_REG, hostdata->id_mask);
return;
}
next prev parent reply other threads:[~2015-12-06 3:44 UTC|newest]
Thread overview: 75+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-12-06 1:31 [PATCH v2 00/72] More fixes, cleanup and modernization for NCR5380 drivers Finn Thain
2015-12-06 1:31 ` [PATCH v2 01/72] atari_scsi: Fix SCSI host ID setting Finn Thain
2015-12-06 1:31 ` [PATCH v2 02/72] ncr5380: Remove redundant static variable initializers Finn Thain
2015-12-06 1:31 ` [PATCH v2 03/72] ncr5380: Eliminate PDEBUG*, TDEBUG* and DTCDEBUG* macros Finn Thain
2015-12-06 1:31 ` [PATCH v2 04/72] ncr5380: Remove more pointless macros Finn Thain
2015-12-06 1:31 ` [PATCH v2 05/72] ncr5380: Remove NCR5380_local_declare and NCR5380_setup macros Finn Thain
2015-12-06 1:31 ` [PATCH v2 06/72] ncr5380: Remove NCR5380_instance_name macro Finn Thain
2015-12-06 1:31 ` [PATCH v2 07/72] ncr5380: Split NCR5380_init() into two functions Finn Thain
2015-12-06 1:31 ` [PATCH v2 08/72] ncr5380: Move NCR53C400-specific code Finn Thain
2015-12-06 1:31 ` [PATCH v2 09/72] atari_NCR5380: Reset bus on driver initialization if required Finn Thain
2015-12-06 1:31 ` [PATCH v2 10/72] atari_NCR5380: Remove RESET_BOOT, CONFIG_ATARI_SCSI_TOSHIBA_DELAY and CONFIG_ATARI_SCSI_RESET_BOOT Finn Thain
2015-12-06 1:31 ` [PATCH v2 11/72] ncr5380: Simplify bus reset handlers Finn Thain
2015-12-06 1:31 ` [PATCH v2 12/72] ncr5380: Remove unused hostdata->aborted flag Finn Thain
2015-12-06 1:31 ` [PATCH v2 13/72] ncr5380: Remove redundant register writes Finn Thain
2015-12-06 1:31 ` [PATCH v2 14/72] ncr5380: Use return instead of goto in NCR5380_select() Finn Thain
2015-12-06 1:31 ` [PATCH v2 15/72] ncr5380: Always escalate bad target time-out " Finn Thain
2015-12-06 1:31 ` [PATCH v2 16/72] ncr5380: Proceed with next command after NCR5380_select() calls scsi_done Finn Thain
2015-12-06 1:31 ` [PATCH v2 17/72] ncr5380: Keep BSY asserted when entering SELECTION phase Finn Thain
2015-12-06 1:31 ` [PATCH v2 18/72] ncr5380: Eliminate USLEEP_WAITLONG delay Finn Thain
2015-12-06 1:31 ` [PATCH v2 19/72] ncr5380: Cleanup bogus {request,release}_region() calls Finn Thain
2015-12-06 1:31 ` [PATCH v2 20/72] ncr5380: Introduce unbound workqueue Finn Thain
2015-12-06 1:31 ` [PATCH v2 21/72] ncr5380: Sleep when polling, if possible Finn Thain
2015-12-06 10:18 ` Geert Uytterhoeven
2015-12-06 22:07 ` Finn Thain
2015-12-06 1:31 ` [PATCH v2 22/72] ncr5380: Eliminate selecting state Finn Thain
2015-12-06 1:31 ` [PATCH v2 23/72] ncr5380: Always retry arbitration and selection Finn Thain
2015-12-06 1:31 ` [PATCH v2 24/72] ncr5380: Implement NCR5380_dma_xfer_len and remove LIMIT_TRANSFERSIZE macro Finn Thain
2015-12-06 1:31 ` [PATCH v2 25/72] ncr5380: Rework disconnect versus poll logic Finn Thain
2015-12-06 1:31 ` [PATCH v2 26/72] ncr5380: Fix NCR5380_transfer_pio() result Finn Thain
2015-12-06 1:31 ` [PATCH v2 27/72] ncr5380: Add missing lock in eh_abort_handler Finn Thain
2015-12-06 1:31 ` [PATCH v2 28/72] ncr5380: Drop DEF_SCSI_QCMD macro Finn Thain
2015-12-06 1:31 ` [PATCH v2 29/72] ncr5380: Remove references to linked commands Finn Thain
2015-12-06 1:31 ` [PATCH v2 30/72] ncr5380: Add missing break after case MESSAGE_REJECT Finn Thain
2015-12-06 1:31 ` [PATCH v2 31/72] ncr5380: Fix !REQ timeout in do_abort() Finn Thain
2015-12-06 1:31 ` [PATCH v2 32/72] ncr5380: Fix bus phase " Finn Thain
2015-12-06 1:31 ` [PATCH v2 33/72] atari_NCR5380: Set do_abort() timeouts Finn Thain
2015-12-06 1:32 ` [PATCH v2 34/72] atari_NCR5380: Use arbitration timeout Finn Thain
2015-12-06 1:32 ` [PATCH v2 35/72] ncr5380: Dont wait for BUS FREE after disconnect Finn Thain
2015-12-06 1:32 ` [PATCH v2 36/72] ncr5380: Use work_struct instead of delayed_work Finn Thain
2015-12-06 1:32 ` [PATCH v2 37/72] ncr5380: Standardize work queueing algorithm Finn Thain
2015-12-06 1:32 ` [PATCH v2 38/72] ncr5380: Remove UNSAFE macro Finn Thain
2015-12-06 1:32 ` [PATCH v2 39/72] ncr5380: Standardize interrupt handling Finn Thain
2015-12-06 1:32 ` [PATCH v2 40/72] ncr5380: Introduce NCR5380_poll_politely2 Finn Thain
2015-12-06 1:32 ` [PATCH v2 41/72] ncr5380: Replace redundant flags with FLAG_NO_DMA_FIXUP Finn Thain
2015-12-06 1:32 ` [PATCH v2 42/72] ncr5380: Replace READ_OVERRUNS macro with FLAG_NO_DMA_FIXUPS Finn Thain
2015-12-06 1:32 ` [PATCH v2 43/72] ncr5380: Standardize reselection handling Finn Thain
2015-12-06 1:32 ` [PATCH v2 44/72] ncr5380: Fix off-by-one bug in extended_msg[] bounds check Finn Thain
2015-12-06 1:32 ` [PATCH v2 45/72] ncr5380: Cleanup #include directives Finn Thain
2015-12-06 1:32 ` [PATCH v2 46/72] ncr5380: Fix NDEBUG_NO_DATAOUT flag Finn Thain
2015-12-06 1:32 ` [PATCH v2 47/72] ncr5380: Fix and cleanup scsi_host_template initializers Finn Thain
2015-12-06 1:32 ` [PATCH v2 48/72] atari_NCR5380: Fix queue_size limit Finn Thain
2015-12-06 1:32 ` [PATCH v2 49/72] ncr5380: Remove redundant ICR_ARBITRATION_LOST test and eliminate FLAG_DTC3181E Finn Thain
2015-12-06 1:32 ` [PATCH v2 50/72] ncr5380: Change instance->host_lock to hostdata->lock Finn Thain
2015-12-06 1:32 ` [PATCH v2 51/72] ncr5380: Remove command list debug code Finn Thain
2015-12-06 1:32 ` [PATCH v2 52/72] ncr5380: Remove H_NO macro and introduce dsprintk Finn Thain
2015-12-06 1:32 ` [PATCH v2 53/72] ncr5380: Use shost_priv helper Finn Thain
2015-12-06 1:32 ` [PATCH v2 54/72] ncr5380: Use dsprintk() for queue debugging Finn Thain
2015-12-06 1:32 ` [PATCH v2 55/72] ncr5380: Remove LIST and REMOVE macros Finn Thain
2015-12-06 1:32 ` [PATCH v2 56/72] ncr5380: Remove redundant volatile qualifiers Finn Thain
2015-12-06 1:32 ` [PATCH v2 57/72] ncr5380: Use standard list data structure Finn Thain
2015-12-06 1:32 ` Finn Thain [this message]
2015-12-06 1:32 ` [PATCH v2 59/72] ncr5380: Fix autosense bugs Finn Thain
2015-12-06 1:32 ` [PATCH v2 60/72] ncr5380: Implement new eh_abort_handler Finn Thain
2015-12-06 1:32 ` [PATCH v2 61/72] ncr5380: Fix EH during arbitration and selection Finn Thain
2015-12-06 1:32 ` [PATCH v2 62/72] ncr5380: Implement new eh_bus_reset_handler Finn Thain
2015-12-06 1:32 ` [PATCH v2 63/72] atari_NCR5380: Remove HOSTNO macro from printk() and seq_printf() calls Finn Thain
2015-12-06 1:32 ` [PATCH v2 64/72] atari_NCR5380: Eliminate HOSTNO macro Finn Thain
2015-12-06 1:32 ` [PATCH v2 65/72] atari_scsi, sun3_scsi: Remove global Scsi_Host pointer Finn Thain
2015-12-06 1:32 ` [PATCH v2 66/72] ncr5380: Fix soft lockups Finn Thain
2015-12-06 1:32 ` [PATCH v2 67/72] ncr5380: Cleanup comments Finn Thain
2015-12-06 1:32 ` [PATCH v2 68/72] ncr5380: Fix whitespace issues using regexp Finn Thain
2015-12-06 1:32 ` [PATCH v2 69/72] ncr5380: Merge changes from atari_NCR5380.c Finn Thain
2015-12-06 1:32 ` [PATCH v2 70/72] atari_NCR5380: Merge changes from NCR5380.c Finn Thain
2015-12-06 1:32 ` [PATCH v2 71/72] ncr5380: Cleanup whitespace and parentheses Finn Thain
2015-12-06 1:32 ` [PATCH v2 72/72] ncr5380: Fix pseudo DMA transfers on 53C400 Finn Thain
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