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Date: Sun, 10 Jun 2012 14:39:20 +0100
From: "Camuso, Tony" <Tony.Camuso@...com>
To: "gregkh@...uxfoundation.org" <gregkh@...uxfoundation.org>
CC: "arnd@...db.de" <arnd@...db.de>,
"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
"Abrams, Melissa" <melissa.abrams@...com>,
"Rusk, Mark" <mark.rusk@...com>
Subject: Re: misc: hpilo patch for increasing max channels
In-reply-to: http://marc.info/?i=20120216000741.GA21792%20()%20kroah%20!%20com
Hi, Greg.
Here is the corrected patch. Applies to 3.5.0-rc2 without complaint.
---
Increase number of supported channels from 8 to 24.
Make the number of channels configurable via module parameter max_ccb.
Signed-off-by: Mark Rusk <mark.rusk@...com>
Signed-off-by: Tony Camuso <tony.camuso@...com>
---
drivers/misc/hpilo.c | 33 +++++++++++++++++++++------------
drivers/misc/hpilo.h | 4 +++-
2 files changed, 24 insertions(+), 13 deletions(-)
diff --git a/drivers/misc/hpilo.c b/drivers/misc/hpilo.c
index fffc227..6df0da4 100644
--- a/drivers/misc/hpilo.c
+++ b/drivers/misc/hpilo.c
@@ -30,6 +30,7 @@
static struct class *ilo_class;
static unsigned int ilo_major;
+static unsigned int max_ccb = MIN_CCB;
static char ilo_hwdev[MAX_ILO_DEV];
static inline int get_entry_id(int entry)
@@ -424,7 +425,7 @@ static void ilo_set_reset(struct ilo_hwinfo *hw)
* Mapped memory is zeroed on ilo reset, so set a per ccb flag
* to indicate that this ccb needs to be closed and reopened.
*/
- for (slot = 0; slot < MAX_CCB; slot++) {
+ for (slot = 0; slot < max_ccb; slot++) {
if (!hw->ccb_alloc[slot])
continue;
set_channel_reset(&hw->ccb_alloc[slot]->driver_ccb);
@@ -535,7 +536,7 @@ static int ilo_close(struct inode *ip, struct file *fp)
struct ilo_hwinfo *hw;
unsigned long flags;
- slot = iminor(ip) % MAX_CCB;
+ slot = iminor(ip) % max_ccb;
hw = container_of(ip->i_cdev, struct ilo_hwinfo, cdev);
spin_lock(&hw->open_lock);
@@ -566,7 +567,7 @@ static int ilo_open(struct inode *ip, struct file *fp)
struct ilo_hwinfo *hw;
unsigned long flags;
- slot = iminor(ip) % MAX_CCB;
+ slot = iminor(ip) % max_ccb;
hw = container_of(ip->i_cdev, struct ilo_hwinfo, cdev);
/* new ccb allocation */
@@ -663,7 +664,7 @@ static irqreturn_t ilo_isr(int irq, void *data)
ilo_set_reset(hw);
}
- for (i = 0; i < MAX_CCB; i++) {
+ for (i = 0; i < max_ccb; i++) {
if (!hw->ccb_alloc[i])
continue;
if (pending & (1 << i))
@@ -697,14 +698,14 @@ static int __devinit ilo_map_device(struct pci_dev *pdev, struct ilo_hwinfo *hw)
}
/* map the adapter shared memory region */
- hw->ram_vaddr = pci_iomap(pdev, 2, MAX_CCB * ILOHW_CCB_SZ);
+ hw->ram_vaddr = pci_iomap(pdev, 2, max_ccb * ILOHW_CCB_SZ);
if (hw->ram_vaddr == NULL) {
dev_err(&pdev->dev, "Error mapping shared mem\n");
goto mmio_free;
}
/* map the doorbell aperture */
- hw->db_vaddr = pci_iomap(pdev, 3, MAX_CCB * ONE_DB_SIZE);
+ hw->db_vaddr = pci_iomap(pdev, 3, max_ccb * ONE_DB_SIZE);
if (hw->db_vaddr == NULL) {
dev_err(&pdev->dev, "Error mapping doorbell\n");
goto ram_free;
@@ -727,7 +728,7 @@ static void ilo_remove(struct pci_dev *pdev)
clear_device(ilo_hw);
minor = MINOR(ilo_hw->cdev.dev);
- for (i = minor; i < minor + MAX_CCB; i++)
+ for (i = minor; i < minor + max_ccb; i++)
device_destroy(ilo_class, MKDEV(ilo_major, i));
cdev_del(&ilo_hw->cdev);
@@ -737,7 +738,7 @@ static void ilo_remove(struct pci_dev *pdev)
pci_release_regions(pdev);
pci_disable_device(pdev);
kfree(ilo_hw);
- ilo_hwdev[(minor / MAX_CCB)] = 0;
+ ilo_hwdev[(minor / max_ccb)] = 0;
}
static int __devinit ilo_probe(struct pci_dev *pdev,
@@ -746,6 +747,11 @@ static int __devinit ilo_probe(struct pci_dev *pdev,
int devnum, minor, start, error;
struct ilo_hwinfo *ilo_hw;
+ if (max_ccb > MAX_CCB)
+ max_ccb = MAX_CCB;
+ else if (max_ccb < MIN_CCB)
+ max_ccb = MIN_CCB;
+
/* find a free range for device files */
for (devnum = 0; devnum < MAX_ILO_DEV; devnum++) {
if (ilo_hwdev[devnum] == 0) {
@@ -795,14 +801,14 @@ static int __devinit ilo_probe(struct pci_dev *pdev,
cdev_init(&ilo_hw->cdev, &ilo_fops);
ilo_hw->cdev.owner = THIS_MODULE;
- start = devnum * MAX_CCB;
- error = cdev_add(&ilo_hw->cdev, MKDEV(ilo_major, start), MAX_CCB);
+ start = devnum * max_ccb;
+ error = cdev_add(&ilo_hw->cdev, MKDEV(ilo_major, start), max_ccb);
if (error) {
dev_err(&pdev->dev, "Could not add cdev\n");
goto remove_isr;
}
- for (minor = 0 ; minor < MAX_CCB; minor++) {
+ for (minor = 0 ; minor < max_ccb; minor++) {
struct device *dev;
dev = device_create(ilo_class, &pdev->dev,
MKDEV(ilo_major, minor), NULL,
@@ -879,11 +885,14 @@ static void __exit ilo_exit(void)
class_destroy(ilo_class);
}
-MODULE_VERSION("1.2");
+MODULE_VERSION("1.3");
MODULE_ALIAS(ILO_NAME);
MODULE_DESCRIPTION(ILO_NAME);
MODULE_AUTHOR("David Altobelli <david.altobelli@...com>");
MODULE_LICENSE("GPL v2");
+module_param(max_ccb, uint, 0444);
+MODULE_PARM_DESC(max_ccb, "Maximum number of HP iLO channels to attach (8)");
+
module_init(ilo_init);
module_exit(ilo_exit);
diff --git a/drivers/misc/hpilo.h b/drivers/misc/hpilo.h
index 54e43ad..b97672e 100644
--- a/drivers/misc/hpilo.h
+++ b/drivers/misc/hpilo.h
@@ -14,7 +14,9 @@
#define ILO_NAME "hpilo"
/* max number of open channel control blocks per device, hw limited to 32 */
-#define MAX_CCB 8
+#define MAX_CCB 24
+/* min number of open channel control blocks per device, hw limited to 32 */
+#define MIN_CCB 8
/* max number of supported devices */
#define MAX_ILO_DEV 1
/* max number of files */
--
1.7.10.2
--
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