#include <scsi/scsi_cmnd.h>
#include <scsi/scsi_device.h>
#include <asm/param.h>
-#include <linux/proc_fs.h>
#include <linux/types.h>
#include "virthba.h"
static void doDiskAddRemove(struct work_struct *work);
static void virthba_serverdown_complete(struct work_struct *work);
-static ssize_t info_proc_read(struct file *file, char __user *buf,
- size_t len, loff_t *offset);
-static ssize_t rqwu_proc_write(struct file *file, const char __user *buffer,
- size_t count, loff_t *ppos);
-static ssize_t enable_ints_read(struct file *file, char __user *buffer,
- size_t count, loff_t *ppos);
-static ssize_t enable_ints_write(struct file *file, const char __user *buffer,
- size_t count, loff_t *ppos);
-
/*****************************************************/
/* Globals */
/*****************************************************/
static DEVICE_ATTRIBUTE *virthba_shost_attrs[];
static struct scsi_host_template virthba_driver_template = {
.name = "Unisys Virtual HBA",
- .proc_name = "uisvirthba",
.info = virthba_get_info,
.ioctl = virthba_ioctl,
.queuecommand = virthba_queue_command,
struct virthba_info *virthbainfo;
};
-static const struct file_operations proc_info_fops = {
- .read = info_proc_read,
-};
-
-static const struct file_operations proc_rqwu_fops = {
- .write = rqwu_proc_write,
-};
-
-static const struct file_operations proc_enable_ints_fops = {
- .read = enable_ints_read,
- .write = enable_ints_write,
-};
-
-
#define VIRTHBASOPENMAX 1
/* array of open devices maintained by open() and close(); */
static struct virthba_devices_open VirtHbasOpen[VIRTHBASOPENMAX];
-static struct proc_dir_entry *virthba_proc_dir;
-static struct proc_dir_entry *info_proc_entry;
-static struct proc_dir_entry *rqwaitus_proc_entry;
-static struct proc_dir_entry *enable_ints_proc_entry;
-#define INFO_PROC_ENTRY_FN "info"
-#define ENABLE_INTS_ENTRY_FN "enable_ints"
-#define RQWU_PROC_ENTRY_FN "rqwait_usecs"
-#define DIR_PROC_ENTRY "virthba"
/*****************************************************/
/* Local Functions */
complete_and_exit(&dc->threadinfo.has_stopped, 0);
}
-/*****************************************************/
-/* proc filesystem functions */
-/*****************************************************/
-
-static ssize_t
-info_proc_read(struct file *file, char __user *buf, size_t len, loff_t *offset)
-{
- int length = 0;
- U64 phys_flags_addr;
- int i;
- struct virthba_info *virthbainfo;
- char *vbuf;
- loff_t pos = *offset;
-
- if (pos < 0)
- return -EINVAL;
-
- if (pos > 0 || !len)
- return 0;
-
- vbuf = kzalloc(len, GFP_KERNEL);
- if (!vbuf)
- return -ENOMEM;
-
- for (i = 0; i < VIRTHBASOPENMAX; i++) {
- if (VirtHbasOpen[i].virthbainfo == NULL)
- continue;
-
- virthbainfo = VirtHbasOpen[i].virthbainfo;
- length += sprintf(vbuf + length, "CHANSOCK is not defined.\n");
-
- length += sprintf(vbuf + length, "MaxBuffLen:%u\n", MaxBuffLen);
-
- length += sprintf(vbuf + length, "\nvirthba result queue poll wait:%d usecs.\n",
- rsltq_wait_usecs);
-
- length += sprintf(vbuf + length, "\ninterrupts_rcvd = %llu, interrupts_disabled = %llu\n",
- virthbainfo->interrupts_rcvd,
- virthbainfo->interrupts_disabled);
- length += sprintf(vbuf + length, "\ninterrupts_notme = %llu,\n",
- virthbainfo->interrupts_notme);
- phys_flags_addr = virt_to_phys((__force void *)
- virthbainfo->flags_addr);
- length += sprintf(vbuf + length, "flags_addr = %p, phys_flags_addr=0x%016llx, FeatureFlags=%llu\n",
- virthbainfo->flags_addr, phys_flags_addr,
- (__le64)readq(virthbainfo->flags_addr));
- length += sprintf(vbuf + length, "acquire_failed_cnt:%llu\n",
- virthbainfo->acquire_failed_cnt);
- length += sprintf(vbuf + length, "\n");
- }
- if (copy_to_user(buf, vbuf, length)) {
- kfree(vbuf);
- return -EFAULT;
- }
-
- kfree(vbuf);
- *offset += length;
- return length;
-}
-
-static ssize_t
-enable_ints_read(struct file *file, char __user *buffer,
- size_t count, loff_t *ppos)
-{
- return 0;
-}
-
-static ssize_t
-enable_ints_write(struct file *file, const char __user *buffer,
- size_t count, loff_t *ppos)
-{
- char buf[4];
- int i, new_value;
- struct virthba_info *virthbainfo;
- U64 __iomem *Features_addr;
- U64 mask;
-
- if (count >= ARRAY_SIZE(buf))
- return -EINVAL;
-
- buf[count] = '\0';
- if (copy_from_user(buf, buffer, count)) {
- LOGERR("copy_from_user failed. buf<<%.*s>> count<<%lu>>\n",
- (int) count, buf, count);
- return -EFAULT;
- }
-
- i = sscanf(buf, "%d", &new_value);
-
- if (i < 1) {
- LOGERR("Failed to scan value for enable_ints, buf<<%.*s>>",
- (int) count, buf);
- return -EFAULT;
- }
-
- /* set all counts to new_value usually 0 */
- for (i = 0; i < VIRTHBASOPENMAX; i++) {
- if (VirtHbasOpen[i].virthbainfo != NULL) {
- virthbainfo = VirtHbasOpen[i].virthbainfo;
- Features_addr =
- &virthbainfo->chinfo.queueinfo->chan->Features;
- if (new_value == 1) {
- mask = ~(ULTRA_IO_CHANNEL_IS_POLLING |
- ULTRA_IO_DRIVER_DISABLES_INTS);
- uisqueue_InterlockedAnd(Features_addr, mask);
- mask = ULTRA_IO_DRIVER_ENABLES_INTS;
- uisqueue_InterlockedOr(Features_addr, mask);
- rsltq_wait_usecs = 4000000;
- } else {
- mask = ~(ULTRA_IO_DRIVER_ENABLES_INTS |
- ULTRA_IO_DRIVER_DISABLES_INTS);
- uisqueue_InterlockedAnd(Features_addr, mask);
- mask = ULTRA_IO_CHANNEL_IS_POLLING;
- uisqueue_InterlockedOr(Features_addr, mask);
- rsltq_wait_usecs = 4000;
- }
- }
- }
- return count;
-}
-
-static ssize_t
-rqwu_proc_write(struct file *file, const char __user *buffer,
- size_t count, loff_t *ppos)
-{
- char buf[16];
- int i, usecs;
-
- if (count >= ARRAY_SIZE(buf))
- return -EINVAL;
-
- if (copy_from_user(buf, buffer, count)) {
- LOGERR("copy_from_user failed. buf<<%.*s>> count<<%lu>>\n",
- (int) count, buf, count);
- return -EFAULT;
- }
-
- i = sscanf(buf, "%d", &usecs);
-
- if (i < 1) {
- LOGERR("Failed to scan value for rqwait_usecs buf<<%.*s>>",
- (int) count, buf);
- return -EFAULT;
- }
-
- /* set global wait time */
- rsltq_wait_usecs = usecs;
- return count;
-}
-
/* As per VirtpciFunc returns 1 for success and 0 for failure */
static int
virthba_serverup(struct virtpci_dev *virtpcidev)
POSTCODE_LINUX_3(VHBA_CREATE_FAILURE_PC, error,
POSTCODE_SEVERITY_ERR);
} else {
- /* create the proc directories */
- virthba_proc_dir = proc_mkdir(DIR_PROC_ENTRY, NULL);
- info_proc_entry = proc_create(INFO_PROC_ENTRY_FN, 0,
- virthba_proc_dir,
- &proc_info_fops);
- rqwaitus_proc_entry = proc_create(RQWU_PROC_ENTRY_FN, 0,
- virthba_proc_dir,
- &proc_rqwu_fops);
- enable_ints_proc_entry = proc_create(ENABLE_INTS_ENTRY_FN, 0,
- virthba_proc_dir,
- &proc_enable_ints_fops);
/* Initialize DARWorkQ */
INIT_WORK(&DARWorkQ, doDiskAddRemove);
virthba_serverdown_workqueue = NULL;
}
- if (info_proc_entry)
- remove_proc_entry(INFO_PROC_ENTRY_FN, virthba_proc_dir);
-
- if (rqwaitus_proc_entry)
- remove_proc_entry(RQWU_PROC_ENTRY_FN, NULL);
-
- if (enable_ints_proc_entry)
- remove_proc_entry(ENABLE_INTS_ENTRY_FN, NULL);
-
- if (virthba_proc_dir)
- remove_proc_entry(DIR_PROC_ENTRY, NULL);
-
LOGINF("Leaving virthba_mod_exit\n");
}
projects / platform / kernel / linux-rpi3.git / commitdiff