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Message-ID: <20120119200114.17835.91593.stgit@beardog.cce.hp.com>
Date: Thu, 19 Jan 2012 14:01:14 -0600
From: "Stephen M. Cameron" <scameron@...rdog.cce.hp.com>
To: james.bottomley@...senpartnership.com
Cc: linux-scsi@...r.kernel.org, linux-kernel@...r.kernel.org,
mikem@...rdog.cce.hp.com, stephenmcameron@...il.com,
thenzl@...hat.com, scott.teel@...com, akpm@...ux-foundation.org,
stable@...nel.org
Subject: [PATCH 07/10] hpsa: refactor hpsa_figure_bus_target_lun
From: Stephen M. Cameron <scameron@...rdog.cce.hp.com>
It should call hpsa_set_bus_target_lun rather
than individually setting bus, target and lun.
Signed-off-by: Stephen M. Cameron <scameron@...rdog.cce.hp.com>
---
drivers/scsi/hpsa.c | 68 +++++++++++++++++++++++----------------------------
1 files changed, 30 insertions(+), 38 deletions(-)
diff --git a/drivers/scsi/hpsa.c b/drivers/scsi/hpsa.c
index c52bc76..ea9b685 100644
--- a/drivers/scsi/hpsa.c
+++ b/drivers/scsi/hpsa.c
@@ -1628,35 +1628,30 @@ static int is_msa2xxx(struct ctlr_info *h, struct hpsa_scsi_dev_t *device)
* in hpsa_find_target_lun, called by hpsa_scsi_add_entry.)
*/
static void figure_bus_target_lun(struct ctlr_info *h,
- u8 *lunaddrbytes, int *bus, int *target, int *lun,
- struct hpsa_scsi_dev_t *device)
-{
- u32 lunid;
-
- if (is_logical_dev_addr_mode(lunaddrbytes)) {
- /* logical device */
- lunid = le32_to_cpu(*((__le32 *) lunaddrbytes));
- if (is_msa2xxx(h, device)) {
- /* msa2xxx way, put logicals on bus 1
- * and match target/lun numbers box
- * reports.
- */
- *bus = 1;
- *target = (lunid >> 16) & 0x3fff;
- *lun = lunid & 0x00ff;
- } else {
- *bus = 0;
- *target = 0;
- *lun = (lunid & 0x3fff);
- }
- } else {
+ u8 *lunaddrbytes, struct hpsa_scsi_dev_t *device)
+{
+ u32 lunid = le32_to_cpu(*((__le32 *) lunaddrbytes));
+
+ if (!is_logical_dev_addr_mode(lunaddrbytes)) {
+ /* physical device, target and lun filled in later */
if (is_hba_lunid(lunaddrbytes))
- *bus = 3; /* controller */
+ hpsa_set_bus_target_lun(device, 3, 0, lunid & 0x3fff);
else
- *bus = 2; /* physical device */
- *target = -1;
- *lun = -1; /* we will fill these in later. */
+ /* defer target, lun assignment for physical devices */
+ hpsa_set_bus_target_lun(device, 2, -1, -1);
+ return;
+ }
+ /* It's a logical device */
+ if (is_msa2xxx(h, device)) {
+ /* msa2xxx way, put logicals on bus 1
+ * and match target/lun numbers box
+ * reports, other smart array, bus 0, target 0, match lunid
+ */
+ hpsa_set_bus_target_lun(device,
+ 1, (lunid >> 16) & 0x3fff, lunid & 0x00ff);
+ return;
}
+ hpsa_set_bus_target_lun(device, 0, 0, lunid & 0x3fff);
}
/*
@@ -1673,12 +1668,11 @@ static void figure_bus_target_lun(struct ctlr_info *h,
static int add_msa2xxx_enclosure_device(struct ctlr_info *h,
struct hpsa_scsi_dev_t *tmpdevice,
struct hpsa_scsi_dev_t *this_device, u8 *lunaddrbytes,
- int bus, int target, int lun, unsigned long lunzerobits[],
- int *nmsa2xxx_enclosures)
+ unsigned long lunzerobits[], int *nmsa2xxx_enclosures)
{
unsigned char scsi3addr[8];
- if (test_bit(target, lunzerobits))
+ if (test_bit(tmpdevice->target, lunzerobits))
return 0; /* There is already a lun 0 on this target. */
if (!is_logical_dev_addr_mode(lunaddrbytes))
@@ -1687,11 +1681,11 @@ static int add_msa2xxx_enclosure_device(struct ctlr_info *h,
if (!is_msa2xxx(h, tmpdevice))
return 0; /* It's only the MSA2xxx that have this problem. */
- if (lun == 0) /* if lun is 0, then obviously we have a lun 0. */
+ if (tmpdevice->lun == 0) /* if lun is 0, then we have a lun 0. */
return 0;
memset(scsi3addr, 0, 8);
- scsi3addr[3] = target;
+ scsi3addr[3] = tmpdevice->target;
if (is_hba_lunid(scsi3addr))
return 0; /* Don't add the RAID controller here. */
@@ -1708,8 +1702,9 @@ static int add_msa2xxx_enclosure_device(struct ctlr_info *h,
if (hpsa_update_device_info(h, scsi3addr, this_device, NULL))
return 0;
(*nmsa2xxx_enclosures)++;
- hpsa_set_bus_target_lun(this_device, bus, target, 0);
- set_bit(target, lunzerobits);
+ hpsa_set_bus_target_lun(this_device,
+ tmpdevice->bus, tmpdevice->target, 0);
+ set_bit(tmpdevice->target, lunzerobits);
return 1;
}
@@ -1804,7 +1799,6 @@ static void hpsa_update_scsi_devices(struct ctlr_info *h, int hostno)
int ncurrent = 0;
int reportlunsize = sizeof(*physdev_list) + HPSA_MAX_PHYS_LUN * 8;
int i, nmsa2xxx_enclosures, ndevs_to_allocate;
- int bus, target, lun;
int raid_ctlr_position;
DECLARE_BITMAP(lunzerobits, HPSA_MAX_TARGETS_PER_CTLR);
@@ -1869,8 +1863,7 @@ static void hpsa_update_scsi_devices(struct ctlr_info *h, int hostno)
if (hpsa_update_device_info(h, lunaddrbytes, tmpdevice,
&is_OBDR))
continue; /* skip it if we can't talk to it. */
- figure_bus_target_lun(h, lunaddrbytes, &bus, &target, &lun,
- tmpdevice);
+ figure_bus_target_lun(h, lunaddrbytes, tmpdevice);
this_device = currentsd[ncurrent];
/*
@@ -1881,14 +1874,13 @@ static void hpsa_update_scsi_devices(struct ctlr_info *h, int hostno)
* there is no lun 0.
*/
if (add_msa2xxx_enclosure_device(h, tmpdevice, this_device,
- lunaddrbytes, bus, target, lun, lunzerobits,
+ lunaddrbytes, lunzerobits,
&nmsa2xxx_enclosures)) {
ncurrent++;
this_device = currentsd[ncurrent];
}
*this_device = *tmpdevice;
- hpsa_set_bus_target_lun(this_device, bus, target, lun);
switch (this_device->devtype) {
case TYPE_ROM:
--
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