[SCSI] aacraid: add new driver features flags (2ca39c48) · Commits · 戴 / test

Feature enhancement, adding a 'flags' entry that will reside in the host controller's tree, with a newline separated list of arbitrary ascii named features that indicate whether the combination of driver and controller has support for said feature. Breaking from the one-line output typical of sysfs entries, newline was added to tailor for grep, or simple gets line by line string match within an application. I added one for a compiler time check for existence of debug print output, one for an optional manifest defined enhanced status reporting in the logs, and one for runtime reporting whether the controller and driver supports arrays larger than 2TB. Adaptec's storage management software uses the last flag to determine whether to make available the creation of arrays larger than 2TB, otherwise a warning is posted. Signed-off-by:

Mark Salyzyn <aacraid@adaptec.com> Signed-off-by:

James Bottomley <James.Bottomley@HansenPartnership.com>

drivers/scsi/aacraid/linit.c

+25 −0

Original line number	Diff line number	Diff line
		@@ -790,6 +790,23 @@ static ssize_t aac_show_vendor(struct class_device *class_dev,
		return len;
		}

		static ssize_t aac_show_flags(struct class_device class_dev, char buf)
		{
		int len = 0;
		struct aac_dev dev = (struct aac_dev)class_to_shost(class_dev)->hostdata;

		if (nblank(dprintk(x)))
		len = snprintf(buf, PAGE_SIZE, "dprintk\n");
		#ifdef AAC_DETAILED_STATUS_INFO
		len += snprintf(buf + len, PAGE_SIZE - len,
		"AAC_DETAILED_STATUS_INFO\n");
		#endif
		if (dev->raw_io_interface && dev->raw_io_64)
		len += snprintf(buf + len, PAGE_SIZE - len,
		"SAI_READ_CAPACITY_16\n");
		return len;
		}

		static ssize_t aac_show_kernel_version(struct class_device *class_dev,
		char *buf)
		{
		@@ -899,6 +916,13 @@ static struct class_device_attribute aac_vendor = {
		},
		.show = aac_show_vendor,
		};
		static struct class_device_attribute aac_flags = {
		.attr = {
		.name = "flags",
		.mode = S_IRUGO,
		},
		.show = aac_show_flags,
		};
		static struct class_device_attribute aac_kernel_version = {
		.attr = {
		.name = "hba_kernel_version",
		@@ -953,6 +977,7 @@ static struct class_device_attribute aac_reset = {
		static struct class_device_attribute *aac_attrs[] = {
		&aac_model,
		&aac_vendor,
		&aac_flags,
		&aac_kernel_version,
		&aac_monitor_version,
		&aac_bios_version,

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