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nest-open-source / nest-learning-thermostat / 5.8 / linux / 767a574a9e8a49b60a1184494958764b04757951 / . / linux / drivers / scsi / dpt_i2o.c
blob: cffcb108ac9639b4fd0a8ea4b32d503206fae319 [file] [log] [blame]
/***************************************************************************
dpti.c - description
-------------------
begin : Thu Sep 7 2000
copyright : (C) 2000 by Adaptec
July 30, 2001 First version being submitted
for inclusion in the kernel. V2.4
See Documentation/scsi/dpti.txt for history, notes, license info
and credits
***************************************************************************/
/***************************************************************************
* *
* This program is free software; you can redistribute it and/or modify *
* it under the terms of the GNU General Public License as published by *
* the Free Software Foundation; either version 2 of the License, or *
* (at your option) any later version. *
* *
***************************************************************************/
/***************************************************************************
* Sat Dec 20 2003 Go Taniguchi <go@turbolinux.co.jp>
- Support 2.6 kernel and DMA-mapping
- ioctl fix for raid tools
- use schedule_timeout in long long loop
**************************************************************************/
/*#define DEBUG 1 */
/*#define UARTDELAY 1 */
#include <linux/module.h>
MODULE_AUTHOR("Deanna Bonds, with _lots_ of help from Mark Salyzyn");
MODULE_DESCRIPTION("Adaptec I2O RAID Driver");
////////////////////////////////////////////////////////////////
#include <linux/ioctl.h> /* For SCSI-Passthrough */
#include <asm/uaccess.h>
#include <linux/stat.h>
#include <linux/slab.h> /* for kmalloc() */
#include <linux/pci.h> /* for PCI support */
#include <linux/proc_fs.h>
#include <linux/blkdev.h>
#include <linux/delay.h> /* for udelay */
#include <linux/interrupt.h>
#include <linux/kernel.h> /* for printk */
#include <linux/sched.h>
#include <linux/reboot.h>
#include <linux/spinlock.h>
#include <linux/dma-mapping.h>
#include <linux/timer.h>
#include <linux/string.h>
#include <linux/ioport.h>
#include <linux/mutex.h>
#include <asm/processor.h> /* for boot_cpu_data */
#include <asm/pgtable.h>
#include <asm/io.h> /* for virt_to_bus, etc. */
#include <scsi/scsi.h>
#include <scsi/scsi_cmnd.h>
#include <scsi/scsi_device.h>
#include <scsi/scsi_host.h>
#include <scsi/scsi_tcq.h>
#include "dpt/dptsig.h"
#include "dpti.h"
/*============================================================================
* Create a binary signature - this is read by dptsig
* Needed for our management apps
*============================================================================
*/
static DEFINE_MUTEX(adpt_mutex);
static dpt_sig_S DPTI_sig = {
{'d', 'P', 't', 'S', 'i', 'G'}, SIG_VERSION,
#ifdef __i386__
PROC_INTEL, PROC_386 | PROC_486 | PROC_PENTIUM | PROC_SEXIUM,
#elif defined(__ia64__)
PROC_INTEL, PROC_IA64,
#elif defined(__sparc__)
PROC_ULTRASPARC, PROC_ULTRASPARC,
#elif defined(__alpha__)
PROC_ALPHA, PROC_ALPHA,
#else
(-1),(-1),
#endif
FT_HBADRVR, 0, OEM_DPT, OS_LINUX, CAP_OVERLAP, DEV_ALL,
ADF_ALL_SC5, 0, 0, DPT_VERSION, DPT_REVISION, DPT_SUBREVISION,
DPT_MONTH, DPT_DAY, DPT_YEAR, "Adaptec Linux I2O RAID Driver"
};
/*============================================================================
* Globals
*============================================================================
*/
static DEFINE_MUTEX(adpt_configuration_lock);
static struct i2o_sys_tbl *sys_tbl;
static dma_addr_t sys_tbl_pa;
static int sys_tbl_ind;
static int sys_tbl_len;
static adpt_hba* hba_chain = NULL;
static int hba_count = 0;
static struct class *adpt_sysfs_class;
static long adpt_unlocked_ioctl(struct file *, unsigned int, unsigned long);
#ifdef CONFIG_COMPAT
static long compat_adpt_ioctl(struct file *, unsigned int, unsigned long);
#endif
static const struct file_operations adpt_fops = {
.unlocked_ioctl = adpt_unlocked_ioctl,
.open = adpt_open,
.release = adpt_close,
#ifdef CONFIG_COMPAT
.compat_ioctl = compat_adpt_ioctl,
#endif
.llseek = noop_llseek,
};
/* Structures and definitions for synchronous message posting.
* See adpt_i2o_post_wait() for description
* */
struct adpt_i2o_post_wait_data
{
int status;
u32 id;
adpt_wait_queue_head_t *wq;
struct adpt_i2o_post_wait_data *next;
};
static struct adpt_i2o_post_wait_data *adpt_post_wait_queue = NULL;
static u32 adpt_post_wait_id = 0;
static DEFINE_SPINLOCK(adpt_post_wait_lock);
/*============================================================================
* Functions
*============================================================================
*/
static inline int dpt_dma64(adpt_hba *pHba)
{
return (sizeof(dma_addr_t) > 4 && (pHba)->dma64);
}
static inline u32 dma_high(dma_addr_t addr)
{
return upper_32_bits(addr);
}
static inline u32 dma_low(dma_addr_t addr)
{
return (u32)addr;
}
static u8 adpt_read_blink_led(adpt_hba* host)
{
if (host->FwDebugBLEDflag_P) {
if( readb(host->FwDebugBLEDflag_P) == 0xbc ){
return readb(host->FwDebugBLEDvalue_P);
}
}
return 0;
}
/*============================================================================
* Scsi host template interface functions
*============================================================================
*/
static struct pci_device_id dptids[] = {
{ PCI_DPT_VENDOR_ID, PCI_DPT_DEVICE_ID, PCI_ANY_ID, PCI_ANY_ID,},
{ PCI_DPT_VENDOR_ID, PCI_DPT_RAPTOR_DEVICE_ID, PCI_ANY_ID, PCI_ANY_ID,},
{ 0, }
};
MODULE_DEVICE_TABLE(pci,dptids);
static int adpt_detect(struct scsi_host_template* sht)
{
struct pci_dev *pDev = NULL;
adpt_hba *pHba;
adpt_hba *next;
PINFO("Detecting Adaptec I2O RAID controllers...\n");
/* search for all Adatpec I2O RAID cards */
while ((pDev = pci_get_device( PCI_DPT_VENDOR_ID, PCI_ANY_ID, pDev))) {
if(pDev->device == PCI_DPT_DEVICE_ID ||
pDev->device == PCI_DPT_RAPTOR_DEVICE_ID){
if(adpt_install_hba(sht, pDev) ){
PERROR("Could not Init an I2O RAID device\n");
PERROR("Will not try to detect others.\n");
return hba_count-1;
}
pci_dev_get(pDev);
}
}
/* In INIT state, Activate IOPs */
for (pHba = hba_chain; pHba; pHba = next) {
next = pHba->next;
// Activate does get status , init outbound, and get hrt
if (adpt_i2o_activate_hba(pHba) < 0) {
adpt_i2o_delete_hba(pHba);
}
}
/* Active IOPs in HOLD state */
rebuild_sys_tab:
if (hba_chain == NULL)
return 0;
/*
* If build_sys_table fails, we kill everything and bail
* as we can't init the IOPs w/o a system table
*/
if (adpt_i2o_build_sys_table() < 0) {
adpt_i2o_sys_shutdown();
return 0;
}
PDEBUG("HBA's in HOLD state\n");
/* If IOP don't get online, we need to rebuild the System table */
for (pHba = hba_chain; pHba; pHba = pHba->next) {
if (adpt_i2o_online_hba(pHba) < 0) {
adpt_i2o_delete_hba(pHba);
goto rebuild_sys_tab;
}
}
/* Active IOPs now in OPERATIONAL state */
PDEBUG("HBA's in OPERATIONAL state\n");
printk("dpti: If you have a lot of devices this could take a few minutes.\n");
for (pHba = hba_chain; pHba; pHba = next) {
next = pHba->next;
printk(KERN_INFO"%s: Reading the hardware resource table.\n", pHba->name);
if (adpt_i2o_lct_get(pHba) < 0){
adpt_i2o_delete_hba(pHba);
continue;
}
if (adpt_i2o_parse_lct(pHba) < 0){
adpt_i2o_delete_hba(pHba);
continue;
}
adpt_inquiry(pHba);
}
adpt_sysfs_class = class_create(THIS_MODULE, "dpt_i2o");
if (IS_ERR(adpt_sysfs_class)) {
printk(KERN_WARNING"dpti: unable to create dpt_i2o class\n");
adpt_sysfs_class = NULL;
}
for (pHba = hba_chain; pHba; pHba = next) {
next = pHba->next;
if (adpt_scsi_host_alloc(pHba, sht) < 0){
adpt_i2o_delete_hba(pHba);
continue;
}
pHba->initialized = TRUE;
pHba->state &= ~DPTI_STATE_RESET;
if (adpt_sysfs_class) {
struct device *dev = device_create(adpt_sysfs_class,
NULL, MKDEV(DPTI_I2O_MAJOR, pHba->unit), NULL,
"dpti%d", pHba->unit);
if (IS_ERR(dev)) {
printk(KERN_WARNING"dpti%d: unable to "
"create device in dpt_i2o class\n",
pHba->unit);
}
}
}
// Register our control device node
// nodes will need to be created in /dev to access this
// the nodes can not be created from within the driver
if (hba_count && register_chrdev(DPTI_I2O_MAJOR, DPT_DRIVER, &adpt_fops)) {
adpt_i2o_sys_shutdown();
return 0;
}
return hba_count;
}
/*
* scsi_unregister will be called AFTER we return.
*/
static int adpt_release(struct Scsi_Host *host)
{
adpt_hba* pHba = (adpt_hba*) host->hostdata[0];
// adpt_i2o_quiesce_hba(pHba);
adpt_i2o_delete_hba(pHba);
scsi_unregister(host);
return 0;
}
static void adpt_inquiry(adpt_hba* pHba)
{
u32 msg[17];
u32 *mptr;
u32 *lenptr;
int direction;
int scsidir;
u32 len;
u32 reqlen;
u8* buf;
dma_addr_t addr;
u8 scb[16];
s32 rcode;
memset(msg, 0, sizeof(msg));
buf = dma_alloc_coherent(&pHba->pDev->dev, 80, &addr, GFP_KERNEL);
if(!buf){
printk(KERN_ERR"%s: Could not allocate buffer\n",pHba->name);
return;
}
memset((void*)buf, 0, 36);
len = 36;
direction = 0x00000000;
scsidir =0x40000000; // DATA IN (iop<--dev)
if (dpt_dma64(pHba))
reqlen = 17; // SINGLE SGE, 64 bit
else
reqlen = 14; // SINGLE SGE, 32 bit
/* Stick the headers on */
msg[0] = reqlen<<16 | SGL_OFFSET_12;
msg[1] = (0xff<<24|HOST_TID<<12|ADAPTER_TID);
msg[2] = 0;
msg[3] = 0;
// Adaptec/DPT Private stuff
msg[4] = I2O_CMD_SCSI_EXEC|DPT_ORGANIZATION_ID<<16;
msg[5] = ADAPTER_TID | 1<<16 /* Interpret*/;
/* Direction, disconnect ok | sense data | simple queue , CDBLen */
// I2O_SCB_FLAG_ENABLE_DISCONNECT |
// I2O_SCB_FLAG_SIMPLE_QUEUE_TAG |
// I2O_SCB_FLAG_SENSE_DATA_IN_MESSAGE;
msg[6] = scsidir|0x20a00000| 6 /* cmd len*/;
mptr=msg+7;
memset(scb, 0, sizeof(scb));
// Write SCSI command into the message - always 16 byte block
scb[0] = INQUIRY;
scb[1] = 0;
scb[2] = 0;
scb[3] = 0;
scb[4] = 36;
scb[5] = 0;
// Don't care about the rest of scb
memcpy(mptr, scb, sizeof(scb));
mptr+=4;
lenptr=mptr++; /* Remember me - fill in when we know */
/* Now fill in the SGList and command */
*lenptr = len;
if (dpt_dma64(pHba)) {
*mptr++ = (0x7C<<24)+(2<<16)+0x02; /* Enable 64 bit */
*mptr++ = 1 << PAGE_SHIFT;
*mptr++ = 0xD0000000|direction|len;
*mptr++ = dma_low(addr);
*mptr++ = dma_high(addr);
} else {
*mptr++ = 0xD0000000|direction|len;
*mptr++ = addr;
}
// Send it on it's way
rcode = adpt_i2o_post_wait(pHba, msg, reqlen<<2, 120);
if (rcode != 0) {
sprintf(pHba->detail, "Adaptec I2O RAID");
printk(KERN_INFO "%s: Inquiry Error (%d)\n",pHba->name,rcode);
if (rcode != -ETIME && rcode != -EINTR)
dma_free_coherent(&pHba->pDev->dev, 80, buf, addr);
} else {
memset(pHba->detail, 0, sizeof(pHba->detail));
memcpy(&(pHba->detail), "Vendor: Adaptec ", 16);
memcpy(&(pHba->detail[16]), " Model: ", 8);
memcpy(&(pHba->detail[24]), (u8*) &buf[16], 16);
memcpy(&(pHba->detail[40]), " FW: ", 4);
memcpy(&(pHba->detail[44]), (u8*) &buf[32], 4);
pHba->detail[48] = '\0'; /* precautionary */
dma_free_coherent(&pHba->pDev->dev, 80, buf, addr);
}
adpt_i2o_status_get(pHba);
return ;
}
static int adpt_slave_configure(struct scsi_device * device)
{
struct Scsi_Host *host = device->host;
adpt_hba* pHba;
pHba = (adpt_hba *) host->hostdata[0];
if (host->can_queue && device->tagged_supported) {
scsi_adjust_queue_depth(device, MSG_SIMPLE_TAG,
host->can_queue - 1);
} else {
scsi_adjust_queue_depth(device, 0, 1);
}
return 0;
}
static int adpt_queue_lck(struct scsi_cmnd * cmd, void (*done) (struct scsi_cmnd *))
{
adpt_hba* pHba = NULL;
struct adpt_device* pDev = NULL; /* dpt per device information */
cmd->scsi_done = done;
/*
* SCSI REQUEST_SENSE commands will be executed automatically by the
* Host Adapter for any errors, so they should not be executed
* explicitly unless the Sense Data is zero indicating that no error
* occurred.
*/
if ((cmd->cmnd[0] == REQUEST_SENSE) && (cmd->sense_buffer[0] != 0)) {
cmd->result = (DID_OK << 16);
cmd->scsi_done(cmd);
return 0;
}
pHba = (adpt_hba*)cmd->device->host->hostdata[0];
if (!pHba) {
return FAILED;
}
rmb();
/*
* TODO: I need to block here if I am processing ioctl cmds
* but if the outstanding cmds all finish before the ioctl,
* the scsi-core will not know to start sending cmds to me again.
* I need to a way to restart the scsi-cores queues or should I block
* calling scsi_done on the outstanding cmds instead
* for now we don't set the IOCTL state
*/
if(((pHba->state) & DPTI_STATE_IOCTL) || ((pHba->state) & DPTI_STATE_RESET)) {
pHba->host->last_reset = jiffies;
pHba->host->resetting = 1;
return 1;
}
// TODO if the cmd->device if offline then I may need to issue a bus rescan
// followed by a get_lct to see if the device is there anymore
if((pDev = (struct adpt_device*) (cmd->device->hostdata)) == NULL) {
/*
* First command request for this device. Set up a pointer
* to the device structure. This should be a TEST_UNIT_READY
* command from scan_scsis_single.
*/
if ((pDev = adpt_find_device(pHba, (u32)cmd->device->channel, (u32)cmd->device->id, (u32)cmd->device->lun)) == NULL) {
// TODO: if any luns are at this bus, scsi id then fake a TEST_UNIT_READY and INQUIRY response
// with type 7F (for all luns less than the max for this bus,id) so the lun scan will continue.
cmd->result = (DID_NO_CONNECT << 16);
cmd->scsi_done(cmd);
return 0;
}
cmd->device->hostdata = pDev;
}
pDev->pScsi_dev = cmd->device;
/*
* If we are being called from when the device is being reset,
* delay processing of the command until later.
*/
if (pDev->state & DPTI_DEV_RESET ) {
return FAILED;
}
return adpt_scsi_to_i2o(pHba, cmd, pDev);
}
static DEF_SCSI_QCMD(adpt_queue)
static int adpt_bios_param(struct scsi_device *sdev, struct block_device *dev,
sector_t capacity, int geom[])
{
int heads=-1;
int sectors=-1;
int cylinders=-1;
// *** First lets set the default geometry ****
// If the capacity is less than ox2000
if (capacity < 0x2000 ) { // floppy
heads = 18;
sectors = 2;
}
// else if between 0x2000 and 0x20000
else if (capacity < 0x20000) {
heads = 64;
sectors = 32;
}
// else if between 0x20000 and 0x40000
else if (capacity < 0x40000) {
heads = 65;
sectors = 63;
}
// else if between 0x4000 and 0x80000
else if (capacity < 0x80000) {
heads = 128;
sectors = 63;
}
// else if greater than 0x80000
else {
heads = 255;
sectors = 63;
}
cylinders = sector_div(capacity, heads * sectors);
// Special case if CDROM
if(sdev->type == 5) { // CDROM
heads = 252;
sectors = 63;
cylinders = 1111;
}
geom[0] = heads;
geom[1] = sectors;
geom[2] = cylinders;
PDEBUG("adpt_bios_param: exit\n");
return 0;
}
static const char *adpt_info(struct Scsi_Host *host)
{
adpt_hba* pHba;
pHba = (adpt_hba *) host->hostdata[0];
return (char *) (pHba->detail);
}
static int adpt_proc_info(struct Scsi_Host *host, char *buffer, char **start, off_t offset,
int length, int inout)
{
struct adpt_device* d;
int id;
int chan;
int len = 0;
int begin = 0;
int pos = 0;
adpt_hba* pHba;
int unit;
*start = buffer;
if (inout == TRUE) {
/*
* The user has done a write and wants us to take the
* data in the buffer and do something with it.
* proc_scsiwrite calls us with inout = 1
*
* Read data from buffer (writing to us) - NOT SUPPORTED
*/
return -EINVAL;
}
/*
* inout = 0 means the user has done a read and wants information
* returned, so we write information about the cards into the buffer
* proc_scsiread() calls us with inout = 0
*/
// Find HBA (host bus adapter) we are looking for
mutex_lock(&adpt_configuration_lock);
for (pHba = hba_chain; pHba; pHba = pHba->next) {
if (pHba->host == host) {
break; /* found adapter */
}
}
mutex_unlock(&adpt_configuration_lock);
if (pHba == NULL) {
return 0;
}
host = pHba->host;
len = sprintf(buffer , "Adaptec I2O RAID Driver Version: %s\n\n", DPT_I2O_VERSION);
len += sprintf(buffer+len, "%s\n", pHba->detail);
len += sprintf(buffer+len, "SCSI Host=scsi%d Control Node=/dev/%s irq=%d\n",
pHba->host->host_no, pHba->name, host->irq);
len += sprintf(buffer+len, "\tpost fifo size = %d\n\treply fifo size = %d\n\tsg table size = %d\n\n",
host->can_queue, (int) pHba->reply_fifo_size , host->sg_tablesize);
pos = begin + len;
/* CHECKPOINT */
if(pos > offset + length) {
goto stop_output;
}
if(pos <= offset) {
/*
* If we haven't even written to where we last left
* off (the last time we were called), reset the
* beginning pointer.
*/
len = 0;
begin = pos;
}
len += sprintf(buffer+len, "Devices:\n");
for(chan = 0; chan < MAX_CHANNEL; chan++) {
for(id = 0; id < MAX_ID; id++) {
d = pHba->channel[chan].device[id];
while(d){
len += sprintf(buffer+len,"\t%-24.24s", d->pScsi_dev->vendor);
len += sprintf(buffer+len," Rev: %-8.8s\n", d->pScsi_dev->rev);
pos = begin + len;
/* CHECKPOINT */
if(pos > offset + length) {
goto stop_output;
}
if(pos <= offset) {
len = 0;
begin = pos;
}
unit = d->pI2o_dev->lct_data.tid;
len += sprintf(buffer+len, "\tTID=%d, (Channel=%d, Target=%d, Lun=%d) (%s)\n\n",
unit, (int)d->scsi_channel, (int)d->scsi_id, (int)d->scsi_lun,
scsi_device_online(d->pScsi_dev)? "online":"offline");
pos = begin + len;
/* CHECKPOINT */
if(pos > offset + length) {
goto stop_output;
}
if(pos <= offset) {
len = 0;
begin = pos;
}
d = d->next_lun;
}
}
}
/*
* begin is where we last checked our position with regards to offset
* begin is always less than offset. len is relative to begin. It
* is the number of bytes written past begin
*
*/
stop_output:
/* stop the output and calculate the correct length */
*(buffer + len) = '\0';
*start = buffer + (offset - begin); /* Start of wanted data */
len -= (offset - begin);
if(len > length) {
len = length;
} else if(len < 0){
len = 0;
**start = '\0';
}
return len;
}
/*
* Turn a struct scsi_cmnd * into a unique 32 bit 'context'.
*/
static u32 adpt_cmd_to_context(struct scsi_cmnd *cmd)
{
return (u32)cmd->serial_number;
}
/*
* Go from a u32 'context' to a struct scsi_cmnd * .
* This could probably be made more efficient.
*/
static struct scsi_cmnd *
adpt_cmd_from_context(adpt_hba * pHba, u32 context)
{
struct scsi_cmnd * cmd;
struct scsi_device * d;
if (context == 0)
return NULL;
spin_unlock(pHba->host->host_lock);
shost_for_each_device(d, pHba->host) {
unsigned long flags;
spin_lock_irqsave(&d->list_lock, flags);
list_for_each_entry(cmd, &d->cmd_list, list) {
if (((u32)cmd->serial_number == context)) {
spin_unlock_irqrestore(&d->list_lock, flags);
scsi_device_put(d);
spin_lock(pHba->host->host_lock);
return cmd;
}
}
spin_unlock_irqrestore(&d->list_lock, flags);
}
spin_lock(pHba->host->host_lock);
return NULL;
}
/*
* Turn a pointer to ioctl reply data into an u32 'context'
*/
static u32 adpt_ioctl_to_context(adpt_hba * pHba, void *reply)
{
#if BITS_PER_LONG == 32
return (u32)(unsigned long)reply;
#else
ulong flags = 0;
u32 nr, i;
spin_lock_irqsave(pHba->host->host_lock, flags);
nr = ARRAY_SIZE(pHba->ioctl_reply_context);
for (i = 0; i < nr; i++) {
if (pHba->ioctl_reply_context[i] == NULL) {
pHba->ioctl_reply_context[i] = reply;
break;
}
}
spin_unlock_irqrestore(pHba->host->host_lock, flags);
if (i >= nr) {
kfree (reply);
printk(KERN_WARNING"%s: Too many outstanding "
"ioctl commands\n", pHba->name);
return (u32)-1;
}
return i;
#endif
}
/*
* Go from an u32 'context' to a pointer to ioctl reply data.
*/
static void *adpt_ioctl_from_context(adpt_hba *pHba, u32 context)
{
#if BITS_PER_LONG == 32
return (void *)(unsigned long)context;
#else
void *p = pHba->ioctl_reply_context[context];
pHba->ioctl_reply_context[context] = NULL;
return p;
#endif
}
/*===========================================================================
* Error Handling routines
*===========================================================================
*/
static int adpt_abort(struct scsi_cmnd * cmd)
{
adpt_hba* pHba = NULL; /* host bus adapter structure */
struct adpt_device* dptdevice; /* dpt per device information */
u32 msg[5];
int rcode;
if(cmd->serial_number == 0){
return FAILED;
}
pHba = (adpt_hba*) cmd->device->host->hostdata[0];
printk(KERN_INFO"%s: Trying to Abort cmd=%ld\n",pHba->name, cmd->serial_number);
if ((dptdevice = (void*) (cmd->device->hostdata)) == NULL) {
printk(KERN_ERR "%s: Unable to abort: No device in cmnd\n",pHba->name);
return FAILED;
}
memset(msg, 0, sizeof(msg));
msg[0] = FIVE_WORD_MSG_SIZE|SGL_OFFSET_0;
msg[1] = I2O_CMD_SCSI_ABORT<<24|HOST_TID<<12|dptdevice->tid;
msg[2] = 0;
msg[3]= 0;
msg[4] = adpt_cmd_to_context(cmd);
if (pHba->host)
spin_lock_irq(pHba->host->host_lock);
rcode = adpt_i2o_post_wait(pHba, msg, sizeof(msg), FOREVER);
if (pHba->host)
spin_unlock_irq(pHba->host->host_lock);
if (rcode != 0) {
if(rcode == -EOPNOTSUPP ){
printk(KERN_INFO"%s: Abort cmd not supported\n",pHba->name);
return FAILED;
}
printk(KERN_INFO"%s: Abort cmd=%ld failed.\n",pHba->name, cmd->serial_number);
return FAILED;
}
printk(KERN_INFO"%s: Abort cmd=%ld complete.\n",pHba->name, cmd->serial_number);
return SUCCESS;
}
#define I2O_DEVICE_RESET 0x27
// This is the same for BLK and SCSI devices
// NOTE this is wrong in the i2o.h definitions
// This is not currently supported by our adapter but we issue it anyway
static int adpt_device_reset(struct scsi_cmnd* cmd)
{
adpt_hba* pHba;
u32 msg[4];
u32 rcode;
int old_state;
struct adpt_device* d = cmd->device->hostdata;
pHba = (void*) cmd->device->host->hostdata[0];
printk(KERN_INFO"%s: Trying to reset device\n",pHba->name);
if (!d) {
printk(KERN_INFO"%s: Reset Device: Device Not found\n",pHba->name);
return FAILED;
}
memset(msg, 0, sizeof(msg));
msg[0] = FOUR_WORD_MSG_SIZE|SGL_OFFSET_0;
msg[1] = (I2O_DEVICE_RESET<<24|HOST_TID<<12|d->tid);
msg[2] = 0;
msg[3] = 0;
if (pHba->host)
spin_lock_irq(pHba->host->host_lock);
old_state = d->state;
d->state |= DPTI_DEV_RESET;
rcode = adpt_i2o_post_wait(pHba, msg,sizeof(msg), FOREVER);
d->state = old_state;
if (pHba->host)
spin_unlock_irq(pHba->host->host_lock);
if (rcode != 0) {
if(rcode == -EOPNOTSUPP ){
printk(KERN_INFO"%s: Device reset not supported\n",pHba->name);
return FAILED;
}
printk(KERN_INFO"%s: Device reset failed\n",pHba->name);
return FAILED;
} else {
printk(KERN_INFO"%s: Device reset successful\n",pHba->name);
return SUCCESS;
}
}
#define I2O_HBA_BUS_RESET 0x87
// This version of bus reset is called by the eh_error handler
static int adpt_bus_reset(struct scsi_cmnd* cmd)
{
adpt_hba* pHba;
u32 msg[4];
u32 rcode;
pHba = (adpt_hba*)cmd->device->host->hostdata[0];
memset(msg, 0, sizeof(msg));
printk(KERN_WARNING"%s: Bus reset: SCSI Bus %d: tid: %d\n",pHba->name, cmd->device->channel,pHba->channel[cmd->device->channel].tid );
msg[0] = FOUR_WORD_MSG_SIZE|SGL_OFFSET_0;
msg[1] = (I2O_HBA_BUS_RESET<<24|HOST_TID<<12|pHba->channel[cmd->device->channel].tid);
msg[2] = 0;
msg[3] = 0;
if (pHba->host)
spin_lock_irq(pHba->host->host_lock);
rcode = adpt_i2o_post_wait(pHba, msg,sizeof(msg), FOREVER);
if (pHba->host)
spin_unlock_irq(pHba->host->host_lock);
if (rcode != 0) {
printk(KERN_WARNING"%s: Bus reset failed.\n",pHba->name);
return FAILED;
} else {
printk(KERN_WARNING"%s: Bus reset success.\n",pHba->name);
return SUCCESS;
}
}
// This version of reset is called by the eh_error_handler
static int __adpt_reset(struct scsi_cmnd* cmd)
{
adpt_hba* pHba;
int rcode;
pHba = (adpt_hba*)cmd->device->host->hostdata[0];
printk(KERN_WARNING"%s: Hba Reset: scsi id %d: tid: %d\n",pHba->name,cmd->device->channel,pHba->channel[cmd->device->channel].tid );
rcode = adpt_hba_reset(pHba);
if(rcode == 0){
printk(KERN_WARNING"%s: HBA reset complete\n",pHba->name);
return SUCCESS;
} else {
printk(KERN_WARNING"%s: HBA reset failed (%x)\n",pHba->name, rcode);
return FAILED;
}
}
static int adpt_reset(struct scsi_cmnd* cmd)
{
int rc;
spin_lock_irq(cmd->device->host->host_lock);
rc = __adpt_reset(cmd);
spin_unlock_irq(cmd->device->host->host_lock);
return rc;
}
// This version of reset is called by the ioctls and indirectly from eh_error_handler via adpt_reset
static int adpt_hba_reset(adpt_hba* pHba)
{
int rcode;
pHba->state |= DPTI_STATE_RESET;
// Activate does get status , init outbound, and get hrt
if ((rcode=adpt_i2o_activate_hba(pHba)) < 0) {
printk(KERN_ERR "%s: Could not activate\n", pHba->name);
adpt_i2o_delete_hba(pHba);
return rcode;
}
if ((rcode=adpt_i2o_build_sys_table()) < 0) {
adpt_i2o_delete_hba(pHba);
return rcode;
}
PDEBUG("%s: in HOLD state\n",pHba->name);
if ((rcode=adpt_i2o_online_hba(pHba)) < 0) {
adpt_i2o_delete_hba(pHba);
return rcode;
}
PDEBUG("%s: in OPERATIONAL state\n",pHba->name);
if ((rcode=adpt_i2o_lct_get(pHba)) < 0){
adpt_i2o_delete_hba(pHba);
return rcode;
}
if ((rcode=adpt_i2o_reparse_lct(pHba)) < 0){
adpt_i2o_delete_hba(pHba);
return rcode;
}
pHba->state &= ~DPTI_STATE_RESET;
adpt_fail_posted_scbs(pHba);
return 0; /* return success */
}
/*===========================================================================
*
*===========================================================================
*/
static void adpt_i2o_sys_shutdown(void)
{
adpt_hba *pHba, *pNext;
struct adpt_i2o_post_wait_data *p1, *old;
printk(KERN_INFO"Shutting down Adaptec I2O controllers.\n");
printk(KERN_INFO" This could take a few minutes if there are many devices attached\n");
/* Delete all IOPs from the controller chain */
/* They should have already been released by the
* scsi-core
*/
for (pHba = hba_chain; pHba; pHba = pNext) {
pNext = pHba->next;
adpt_i2o_delete_hba(pHba);
}
/* Remove any timedout entries from the wait queue. */
// spin_lock_irqsave(&adpt_post_wait_lock, flags);
/* Nothing should be outstanding at this point so just
* free them
*/
for(p1 = adpt_post_wait_queue; p1;) {
old = p1;
p1 = p1->next;
kfree(old);
}
// spin_unlock_irqrestore(&adpt_post_wait_lock, flags);
adpt_post_wait_queue = NULL;
printk(KERN_INFO "Adaptec I2O controllers down.\n");
}
static int adpt_install_hba(struct scsi_host_template* sht, struct pci_dev* pDev)
{
adpt_hba* pHba = NULL;
adpt_hba* p = NULL;
ulong base_addr0_phys = 0;
ulong base_addr1_phys = 0;
u32 hba_map0_area_size = 0;
u32 hba_map1_area_size = 0;
void __iomem *base_addr_virt = NULL;
void __iomem *msg_addr_virt = NULL;
int dma64 = 0;
int raptorFlag = FALSE;
if(pci_enable_device(pDev)) {
return -EINVAL;
}
if (pci_request_regions(pDev, "dpt_i2o")) {
PERROR("dpti: adpt_config_hba: pci request region failed\n");
return -EINVAL;
}
pci_set_master(pDev);
/*
* See if we should enable dma64 mode.
*/
if (sizeof(dma_addr_t) > 4 &&
pci_set_dma_mask(pDev, DMA_BIT_MASK(64)) == 0) {
if (dma_get_required_mask(&pDev->dev) > DMA_BIT_MASK(32))
dma64 = 1;
}
if (!dma64 && pci_set_dma_mask(pDev, DMA_BIT_MASK(32)) != 0)
return -EINVAL;
/* adapter only supports message blocks below 4GB */
pci_set_consistent_dma_mask(pDev, DMA_BIT_MASK(32));
base_addr0_phys = pci_resource_start(pDev,0);
hba_map0_area_size = pci_resource_len(pDev,0);
// Check if standard PCI card or single BAR Raptor
if(pDev->device == PCI_DPT_DEVICE_ID){
if(pDev->subsystem_device >=0xc032 && pDev->subsystem_device <= 0xc03b){
// Raptor card with this device id needs 4M
hba_map0_area_size = 0x400000;
} else { // Not Raptor - it is a PCI card
if(hba_map0_area_size > 0x100000 ){
hba_map0_area_size = 0x100000;
}
}
} else {// Raptor split BAR config
// Use BAR1 in this configuration
base_addr1_phys = pci_resource_start(pDev,1);
hba_map1_area_size = pci_resource_len(pDev,1);
raptorFlag = TRUE;
}
#if BITS_PER_LONG == 64
/*
* The original Adaptec 64 bit driver has this comment here:
* "x86_64 machines need more optimal mappings"
*
* I assume some HBAs report ridiculously large mappings
* and we need to limit them on platforms with IOMMUs.
*/
if (raptorFlag == TRUE) {
if (hba_map0_area_size > 128)
hba_map0_area_size = 128;
if (hba_map1_area_size > 524288)
hba_map1_area_size = 524288;
} else {
if (hba_map0_area_size > 524288)
hba_map0_area_size = 524288;
}
#endif
base_addr_virt = ioremap(base_addr0_phys,hba_map0_area_size);
if (!base_addr_virt) {
pci_release_regions(pDev);
PERROR("dpti: adpt_config_hba: io remap failed\n");
return -EINVAL;
}
if(raptorFlag == TRUE) {
msg_addr_virt = ioremap(base_addr1_phys, hba_map1_area_size );
if (!msg_addr_virt) {
PERROR("dpti: adpt_config_hba: io remap failed on BAR1\n");
iounmap(base_addr_virt);
pci_release_regions(pDev);
return -EINVAL;
}
} else {
msg_addr_virt = base_addr_virt;
}
// Allocate and zero the data structure
pHba = kzalloc(sizeof(adpt_hba), GFP_KERNEL);
if (!pHba) {
if (msg_addr_virt != base_addr_virt)
iounmap(msg_addr_virt);
iounmap(base_addr_virt);
pci_release_regions(pDev);
return -ENOMEM;
}
mutex_lock(&adpt_configuration_lock);
if(hba_chain != NULL){
for(p = hba_chain; p->next; p = p->next);
p->next = pHba;
} else {
hba_chain = pHba;
}
pHba->next = NULL;
pHba->unit = hba_count;
sprintf(pHba->name, "dpti%d", hba_count);
hba_count++;
mutex_unlock(&adpt_configuration_lock);
pHba->pDev = pDev;
pHba->base_addr_phys = base_addr0_phys;
// Set up the Virtual Base Address of the I2O Device
pHba->base_addr_virt = base_addr_virt;
pHba->msg_addr_virt = msg_addr_virt;
pHba->irq_mask = base_addr_virt+0x30;
pHba->post_port = base_addr_virt+0x40;
pHba->reply_port = base_addr_virt+0x44;
pHba->hrt = NULL;
pHba->lct = NULL;
pHba->lct_size = 0;
pHba->status_block = NULL;
pHba->post_count = 0;
pHba->state = DPTI_STATE_RESET;
pHba->pDev = pDev;
pHba->devices = NULL;
pHba->dma64 = dma64;
// Initializing the spinlocks
spin_lock_init(&pHba->state_lock);
spin_lock_init(&adpt_post_wait_lock);
if(raptorFlag == 0){
printk(KERN_INFO "Adaptec I2O RAID controller"
" %d at %p size=%x irq=%d%s\n",
hba_count-1, base_addr_virt,
hba_map0_area_size, pDev->irq,
dma64 ? " (64-bit DMA)" : "");
} else {
printk(KERN_INFO"Adaptec I2O RAID controller %d irq=%d%s\n",
hba_count-1, pDev->irq,
dma64 ? " (64-bit DMA)" : "");
printk(KERN_INFO" BAR0 %p - size= %x\n",base_addr_virt,hba_map0_area_size);
printk(KERN_INFO" BAR1 %p - size= %x\n",msg_addr_virt,hba_map1_area_size);
}
if (request_irq (pDev->irq, adpt_isr, IRQF_SHARED, pHba->name, pHba)) {
printk(KERN_ERR"%s: Couldn't register IRQ %d\n", pHba->name, pDev->irq);
adpt_i2o_delete_hba(pHba);
return -EINVAL;
}
return 0;
}
static void adpt_i2o_delete_hba(adpt_hba* pHba)
{
adpt_hba* p1;
adpt_hba* p2;
struct i2o_device* d;
struct i2o_device* next;
int i;
int j;
struct adpt_device* pDev;
struct adpt_device* pNext;
mutex_lock(&adpt_configuration_lock);
// scsi_unregister calls our adpt_release which
// does a quiese
if(pHba->host){
free_irq(pHba->host->irq, pHba);
}
p2 = NULL;
for( p1 = hba_chain; p1; p2 = p1,p1=p1->next){
if(p1 == pHba) {
if(p2) {
p2->next = p1->next;
} else {
hba_chain = p1->next;
}
break;
}
}
hba_count--;
mutex_unlock(&adpt_configuration_lock);
iounmap(pHba->base_addr_virt);
pci_release_regions(pHba->pDev);
if(pHba->msg_addr_virt != pHba->base_addr_virt){
iounmap(pHba->msg_addr_virt);
}
if(pHba->FwDebugBuffer_P)
iounmap(pHba->FwDebugBuffer_P);
if(pHba->hrt) {
dma_free_coherent(&pHba->pDev->dev,
pHba->hrt->num_entries * pHba->hrt->entry_len << 2,
pHba->hrt, pHba->hrt_pa);
}
if(pHba->lct) {
dma_free_coherent(&pHba->pDev->dev, pHba->lct_size,
pHba->lct, pHba->lct_pa);
}
if(pHba->status_block) {
dma_free_coherent(&pHba->pDev->dev, sizeof(i2o_status_block),
pHba->status_block, pHba->status_block_pa);
}
if(pHba->reply_pool) {
dma_free_coherent(&pHba->pDev->dev,
pHba->reply_fifo_size * REPLY_FRAME_SIZE * 4,
pHba->reply_pool, pHba->reply_pool_pa);
}
for(d = pHba->devices; d ; d = next){
next = d->next;
kfree(d);
}
for(i = 0 ; i < pHba->top_scsi_channel ; i++){
for(j = 0; j < MAX_ID; j++){
if(pHba->channel[i].device[j] != NULL){
for(pDev = pHba->channel[i].device[j]; pDev; pDev = pNext){
pNext = pDev->next_lun;
kfree(pDev);
}
}
}
}
pci_dev_put(pHba->pDev);
if (adpt_sysfs_class)
device_destroy(adpt_sysfs_class,
MKDEV(DPTI_I2O_MAJOR, pHba->unit));
kfree(pHba);
if(hba_count <= 0){
unregister_chrdev(DPTI_I2O_MAJOR, DPT_DRIVER);
if (adpt_sysfs_class) {
class_destroy(adpt_sysfs_class);
adpt_sysfs_class = NULL;
}
}
}
static struct adpt_device* adpt_find_device(adpt_hba* pHba, u32 chan, u32 id, u32 lun)
{
struct adpt_device* d;
if(chan < 0 || chan >= MAX_CHANNEL)
return NULL;
if( pHba->channel[chan].device == NULL){
printk(KERN_DEBUG"Adaptec I2O RAID: Trying to find device before they are allocated\n");
return NULL;
}
d = pHba->channel[chan].device[id];
if(!d || d->tid == 0) {
return NULL;
}
/* If it is the only lun at that address then this should match*/
if(d->scsi_lun == lun){
return d;
}
/* else we need to look through all the luns */
for(d=d->next_lun ; d ; d = d->next_lun){
if(d->scsi_lun == lun){
return d;
}
}
return NULL;
}
static int adpt_i2o_post_wait(adpt_hba* pHba, u32* msg, int len, int timeout)
{
// I used my own version of the WAIT_QUEUE_HEAD
// to handle some version differences
// When embedded in the kernel this could go back to the vanilla one
ADPT_DECLARE_WAIT_QUEUE_HEAD(adpt_wq_i2o_post);
int status = 0;
ulong flags = 0;
struct adpt_i2o_post_wait_data *p1, *p2;
struct adpt_i2o_post_wait_data *wait_data =
kmalloc(sizeof(struct adpt_i2o_post_wait_data), GFP_ATOMIC);
DECLARE_WAITQUEUE(wait, current);
if (!wait_data)
return -ENOMEM;
/*
* The spin locking is needed to keep anyone from playing
* with the queue pointers and id while we do the same
*/
spin_lock_irqsave(&adpt_post_wait_lock, flags);
// TODO we need a MORE unique way of getting ids
// to support async LCT get
wait_data->next = adpt_post_wait_queue;
adpt_post_wait_queue = wait_data;
adpt_post_wait_id++;
adpt_post_wait_id &= 0x7fff;
wait_data->id = adpt_post_wait_id;
spin_unlock_irqrestore(&adpt_post_wait_lock, flags);
wait_data->wq = &adpt_wq_i2o_post;
wait_data->status = -ETIMEDOUT;
add_wait_queue(&adpt_wq_i2o_post, &wait);
msg[2] |= 0x80000000 | ((u32)wait_data->id);
timeout *= HZ;
if((status = adpt_i2o_post_this(pHba, msg, len)) == 0){
set_current_state(TASK_INTERRUPTIBLE);
if(pHba->host)
spin_unlock_irq(pHba->host->host_lock);
if (!timeout)
schedule();
else{
timeout = schedule_timeout(timeout);
if (timeout == 0) {
// I/O issued, but cannot get result in
// specified time. Freeing resorces is
// dangerous.
status = -ETIME;
}
}
if(pHba->host)
spin_lock_irq(pHba->host->host_lock);
}
remove_wait_queue(&adpt_wq_i2o_post, &wait);
if(status == -ETIMEDOUT){
printk(KERN_INFO"dpti%d: POST WAIT TIMEOUT\n",pHba->unit);
// We will have to free the wait_data memory during shutdown
return status;
}
/* Remove the entry from the queue. */
p2 = NULL;
spin_lock_irqsave(&adpt_post_wait_lock, flags);
for(p1 = adpt_post_wait_queue; p1; p2 = p1, p1 = p1->next) {
if(p1 == wait_data) {
if(p1->status == I2O_DETAIL_STATUS_UNSUPPORTED_FUNCTION ) {
status = -EOPNOTSUPP;
}
if(p2) {
p2->next = p1->next;
} else {
adpt_post_wait_queue = p1->next;
}
break;
}
}
spin_unlock_irqrestore(&adpt_post_wait_lock, flags);
kfree(wait_data);
return status;
}
static s32 adpt_i2o_post_this(adpt_hba* pHba, u32* data, int len)
{
u32 m = EMPTY_QUEUE;
u32 __iomem *msg;
ulong timeout = jiffies + 30*HZ;
do {
rmb();
m = readl(pHba->post_port);
if (m != EMPTY_QUEUE) {
break;
}
if(time_after(jiffies,timeout)){
printk(KERN_WARNING"dpti%d: Timeout waiting for message frame!\n", pHba->unit);
return -ETIMEDOUT;
}
schedule_timeout_uninterruptible(1);
} while(m == EMPTY_QUEUE);
msg = pHba->msg_addr_virt + m;
memcpy_toio(msg, data, len);
wmb();
//post message
writel(m, pHba->post_port);
wmb();
return 0;
}
static void adpt_i2o_post_wait_complete(u32 context, int status)
{
struct adpt_i2o_post_wait_data *p1 = NULL;
/*
* We need to search through the adpt_post_wait
* queue to see if the given message is still
* outstanding. If not, it means that the IOP
* took longer to respond to the message than we
* had allowed and timer has already expired.
* Not much we can do about that except log
* it for debug purposes, increase timeout, and recompile
*
* Lock needed to keep anyone from moving queue pointers
* around while we're looking through them.
*/
context &= 0x7fff;
spin_lock(&adpt_post_wait_lock);
for(p1 = adpt_post_wait_queue; p1; p1 = p1->next) {
if(p1->id == context) {
p1->status = status;
spin_unlock(&adpt_post_wait_lock);
wake_up_interruptible(p1->wq);
return;
}
}
spin_unlock(&adpt_post_wait_lock);
// If this happens we lose commands that probably really completed
printk(KERN_DEBUG"dpti: Could Not find task %d in wait queue\n",context);
printk(KERN_DEBUG" Tasks in wait queue:\n");
for(p1 = adpt_post_wait_queue; p1; p1 = p1->next) {
printk(KERN_DEBUG" %d\n",p1->id);
}
return;
}
static s32 adpt_i2o_reset_hba(adpt_hba* pHba)
{
u32 msg[8];
u8* status;
dma_addr_t addr;
u32 m = EMPTY_QUEUE ;
ulong timeout = jiffies + (TMOUT_IOPRESET*HZ);
if(pHba->initialized == FALSE) { // First time reset should be quick
timeout = jiffies + (25*HZ);
} else {
adpt_i2o_quiesce_hba(pHba);
}
do {
rmb();
m = readl(pHba->post_port);
if (m != EMPTY_QUEUE) {
break;
}
if(time_after(jiffies,timeout)){
printk(KERN_WARNING"Timeout waiting for message!\n");
return -ETIMEDOUT;
}
schedule_timeout_uninterruptible(1);
} while (m == EMPTY_QUEUE);
status = dma_alloc_coherent(&pHba->pDev->dev, 4, &addr, GFP_KERNEL);
if(status == NULL) {
adpt_send_nop(pHba, m);
printk(KERN_ERR"IOP reset failed - no free memory.\n");
return -ENOMEM;
}
memset(status,0,4);
msg[0]=EIGHT_WORD_MSG_SIZE|SGL_OFFSET_0;
msg[1]=I2O_CMD_ADAPTER_RESET<<24|HOST_TID<<12|ADAPTER_TID;
msg[2]=0;
msg[3]=0;
msg[4]=0;
msg[5]=0;
msg[6]=dma_low(addr);
msg[7]=dma_high(addr);
memcpy_toio(pHba->msg_addr_virt+m, msg, sizeof(msg));
wmb();
writel(m, pHba->post_port);
wmb();
while(*status == 0){
if(time_after(jiffies,timeout)){
printk(KERN_WARNING"%s: IOP Reset Timeout\n",pHba->name);
/* We lose 4 bytes of "status" here, but we cannot
free these because controller may awake and corrupt
those bytes at any time */
/* dma_free_coherent(&pHba->pDev->dev, 4, buf, addr); */
return -ETIMEDOUT;
}
rmb();
schedule_timeout_uninterruptible(1);
}
if(*status == 0x01 /*I2O_EXEC_IOP_RESET_IN_PROGRESS*/) {
PDEBUG("%s: Reset in progress...\n", pHba->name);
// Here we wait for message frame to become available
// indicated that reset has finished
do {
rmb();
m = readl(pHba->post_port);
if (m != EMPTY_QUEUE) {
break;
}
if(time_after(jiffies,timeout)){
printk(KERN_ERR "%s:Timeout waiting for IOP Reset.\n",pHba->name);
/* We lose 4 bytes of "status" here, but we
cannot free these because controller may
awake and corrupt those bytes at any time */
/* dma_free_coherent(&pHba->pDev->dev, 4, buf, addr); */
return -ETIMEDOUT;
}
schedule_timeout_uninterruptible(1);
} while (m == EMPTY_QUEUE);
// Flush the offset
adpt_send_nop(pHba, m);
}
adpt_i2o_status_get(pHba);
if(*status == 0x02 ||
pHba->status_block->iop_state != ADAPTER_STATE_RESET) {
printk(KERN_WARNING"%s: Reset reject, trying to clear\n",
pHba->name);
} else {
PDEBUG("%s: Reset completed.\n", pHba->name);
}
dma_free_coherent(&pHba->pDev->dev, 4, status, addr);
#ifdef UARTDELAY
// This delay is to allow someone attached to the card through the debug UART to
// set up the dump levels that they want before the rest of the initialization sequence
adpt_delay(20000);
#endif
return 0;
}
static int adpt_i2o_parse_lct(adpt_hba* pHba)
{
int i;
int max;
int tid;
struct i2o_device *d;
i2o_lct *lct = pHba->lct;
u8 bus_no = 0;
s16 scsi_id;
s16 scsi_lun;
u32 buf[10]; // larger than 7, or 8 ...
struct adpt_device* pDev;
if (lct == NULL) {
printk(KERN_ERR "%s: LCT is empty???\n",pHba->name);
return -1;
}
max = lct->table_size;
max -= 3;
max /= 9;
for(i=0;i<max;i++) {
if( lct->lct_entry[i].user_tid != 0xfff){
/*
* If we have hidden devices, we need to inform the upper layers about
* the possible maximum id reference to handle device access when
* an array is disassembled. This code has no other purpose but to
* allow us future access to devices that are currently hidden
* behind arrays, hotspares or have not been configured (JBOD mode).
*/
if( lct->lct_entry[i].class_id != I2O_CLASS_RANDOM_BLOCK_STORAGE &&
lct->lct_entry[i].class_id != I2O_CLASS_SCSI_PERIPHERAL &&
lct->lct_entry[i].class_id != I2O_CLASS_FIBRE_CHANNEL_PERIPHERAL ){
continue;
}
tid = lct->lct_entry[i].tid;
// I2O_DPT_DEVICE_INFO_GROUP_NO;
if(adpt_i2o_query_scalar(pHba, tid, 0x8000, -1, buf, 32)<0) {
continue;
}
bus_no = buf[0]>>16;
scsi_id = buf[1];
scsi_lun = (buf[2]>>8 )&0xff;
if(bus_no >= MAX_CHANNEL) { // Something wrong skip it
printk(KERN_WARNING"%s: Channel number %d out of range \n", pHba->name, bus_no);
continue;
}
if (scsi_id >= MAX_ID){
printk(KERN_WARNING"%s: SCSI ID %d out of range \n", pHba->name, bus_no);
continue;
}
if(bus_no > pHba->top_scsi_channel){
pHba->top_scsi_channel = bus_no;
}
if(scsi_id > pHba->top_scsi_id){
pHba->top_scsi_id = scsi_id;
}
if(scsi_lun > pHba->top_scsi_lun){
pHba->top_scsi_lun = scsi_lun;
}
continue;
}
d = kmalloc(sizeof(struct i2o_device), GFP_KERNEL);
if(d==NULL)
{
printk(KERN_CRIT"%s: Out of memory for I2O device data.\n",pHba->name);
return -ENOMEM;
}
d->controller = pHba;
d->next = NULL;
memcpy(&d->lct_data, &lct->lct_entry[i], sizeof(i2o_lct_entry));
d->flags = 0;
tid = d->lct_data.tid;
adpt_i2o_report_hba_unit(pHba, d);
adpt_i2o_install_device(pHba, d);
}
bus_no = 0;
for(d = pHba->devices; d ; d = d->next) {
if(d->lct_data.class_id == I2O_CLASS_BUS_ADAPTER_PORT ||
d->lct_data.class_id == I2O_CLASS_FIBRE_CHANNEL_PORT){
tid = d->lct_data.tid;
// TODO get the bus_no from hrt-but for now they are in order
//bus_no =
if(bus_no > pHba->top_scsi_channel){
pHba->top_scsi_channel = bus_no;
}
pHba->channel[bus_no].type = d->lct_data.class_id;
pHba->channel[bus_no].tid = tid;
if(adpt_i2o_query_scalar(pHba, tid, 0x0200, -1, buf, 28)>=0)
{
pHba->channel[bus_no].scsi_id = buf[1];
PDEBUG("Bus %d - SCSI ID %d.\n", bus_no, buf[1]);
}
// TODO remove - this is just until we get from hrt
bus_no++;
if(bus_no >= MAX_CHANNEL) { // Something wrong skip it
printk(KERN_WARNING"%s: Channel number %d out of range - LCT\n", pHba->name, bus_no);
break;
}
}
}
// Setup adpt_device table
for(d = pHba->devices; d ; d = d->next) {
if(d->lct_data.class_id == I2O_CLASS_RANDOM_BLOCK_STORAGE ||
d->lct_data.class_id == I2O_CLASS_SCSI_PERIPHERAL ||
d->lct_data.class_id == I2O_CLASS_FIBRE_CHANNEL_PERIPHERAL ){
tid = d->lct_data.tid;
scsi_id = -1;
// I2O_DPT_DEVICE_INFO_GROUP_NO;
if(adpt_i2o_query_scalar(pHba, tid, 0x8000, -1, buf, 32)>=0) {
bus_no = buf[0]>>16;
scsi_id = buf[1];
scsi_lun = (buf[2]>>8 )&0xff;
if(bus_no >= MAX_CHANNEL) { // Something wrong skip it
continue;
}
if (scsi_id >= MAX_ID) {
continue;
}
if( pHba->channel[bus_no].device[scsi_id] == NULL){
pDev = kzalloc(sizeof(struct adpt_device),GFP_KERNEL);
if(pDev == NULL) {
return -ENOMEM;
}
pHba->channel[bus_no].device[scsi_id] = pDev;
} else {
for( pDev = pHba->channel[bus_no].device[scsi_id];
pDev->next_lun; pDev = pDev->next_lun){
}
pDev->next_lun = kzalloc(sizeof(struct adpt_device),GFP_KERNEL);
if(pDev->next_lun == NULL) {
return -ENOMEM;
}
pDev = pDev->next_lun;
}
pDev->tid = tid;
pDev->scsi_channel = bus_no;
pDev->scsi_id = scsi_id;
pDev->scsi_lun = scsi_lun;
pDev->pI2o_dev = d;
d->owner = pDev;
pDev->type = (buf[0])&0xff;
pDev->flags = (buf[0]>>8)&0xff;
if(scsi_id > pHba->top_scsi_id){
pHba->top_scsi_id = scsi_id;
}
if(scsi_lun > pHba->top_scsi_lun){
pHba->top_scsi_lun = scsi_lun;
}
}
if(scsi_id == -1){
printk(KERN_WARNING"Could not find SCSI ID for %s\n",
d->lct_data.identity_tag);
}
}
}
return 0;
}
/*
* Each I2O controller has a chain of devices on it - these match
* the useful parts of the LCT of the board.
*/
static int adpt_i2o_install_device(adpt_hba* pHba, struct i2o_device *d)
{
mutex_lock(&adpt_configuration_lock);
d->controller=pHba;
d->owner=NULL;
d->next=pHba->devices;
d->prev=NULL;
if (pHba->devices != NULL){
pHba->devices->prev=d;
}
pHba->devices=d;
*d->dev_name = 0;
mutex_unlock(&adpt_configuration_lock);
return 0;
}
static int adpt_open(struct inode *inode, struct file *file)
{
int minor;
adpt_hba* pHba;
mutex_lock(&adpt_mutex);
//TODO check for root access
//
minor = iminor(inode);
if (minor >= hba_count) {
mutex_unlock(&adpt_mutex);
return -ENXIO;
}
mutex_lock(&adpt_configuration_lock);
for (pHba = hba_chain; pHba; pHba = pHba->next) {
if (pHba->unit == minor) {
break; /* found adapter */
}
}
if (pHba == NULL) {
mutex_unlock(&adpt_configuration_lock);
mutex_unlock(&adpt_mutex);
return -ENXIO;
}
// if(pHba->in_use){
// mutex_unlock(&adpt_configuration_lock);
// return -EBUSY;
// }
pHba->in_use = 1;
mutex_unlock(&adpt_configuration_lock);
mutex_unlock(&adpt_mutex);
return 0;
}
static int adpt_close(struct inode *inode, struct file *file)
{
int minor;
adpt_hba* pHba;
minor = iminor(inode);
if (minor >= hba_count) {
return -ENXIO;
}
mutex_lock(&adpt_configuration_lock);
for (pHba = hba_chain; pHba; pHba = pHba->next) {
if (pHba->unit == minor) {
break; /* found adapter */
}
}
mutex_unlock(&adpt_configuration_lock);
if (pHba == NULL) {
return -ENXIO;
}
pHba->in_use = 0;
return 0;
}
static int adpt_i2o_passthru(adpt_hba* pHba, u32 __user *arg)
{
u32 msg[MAX_MESSAGE_SIZE];
u32* reply = NULL;
u32 size = 0;
u32 reply_size = 0;
u32 __user *user_msg = arg;
u32 __user * user_reply = NULL;
void *sg_list[pHba->sg_tablesize];
u32 sg_offset = 0;
u32 sg_count = 0;
int sg_index = 0;
u32 i = 0;
u32 rcode = 0;
void *p = NULL;
dma_addr_t addr;
ulong flags = 0;
memset(&msg, 0, MAX_MESSAGE_SIZE*4);
// get user msg size in u32s
if(get_user(size, &user_msg[0])){
return -EFAULT;
}
size = size>>16;
user_reply = &user_msg[size];
if(size > MAX_MESSAGE_SIZE){
return -EFAULT;
}
size *= 4; // Convert to bytes
/* Copy in the user's I2O command */
if(copy_from_user(msg, user_msg, size)) {
return -EFAULT;
}
get_user(reply_size, &user_reply[0]);
reply_size = reply_size>>16;
if(reply_size > REPLY_FRAME_SIZE){
reply_size = REPLY_FRAME_SIZE;
}
reply_size *= 4;
reply = kzalloc(REPLY_FRAME_SIZE*4, GFP_KERNEL);
if(reply == NULL) {
printk(KERN_WARNING"%s: Could not allocate reply buffer\n",pHba->name);
return -ENOMEM;
}
sg_offset = (msg[0]>>4)&0xf;
msg[2] = 0x40000000; // IOCTL context
msg[3] = adpt_ioctl_to_context(pHba, reply);
if (msg[3] == (u32)-1)
return -EBUSY;
memset(sg_list,0, sizeof(sg_list[0])*pHba->sg_tablesize);
if(sg_offset) {
// TODO add 64 bit API
struct sg_simple_element *sg = (struct sg_simple_element*) (msg+sg_offset);
sg_count = (size - sg_offset*4) / sizeof(struct sg_simple_element);
if (sg_count > pHba->sg_tablesize){
printk(KERN_DEBUG"%s:IOCTL SG List too large (%u)\n", pHba->name,sg_count);
kfree (reply);
return -EINVAL;
}
for(i = 0; i < sg_count; i++) {
int sg_size;
if (!(sg[i].flag_count & 0x10000000 /*I2O_SGL_FLAGS_SIMPLE_ADDRESS_ELEMENT*/)) {
printk(KERN_DEBUG"%s:Bad SG element %d - not simple (%x)\n",pHba->name,i, sg[i].flag_count);
rcode = -EINVAL;
goto cleanup;
}
sg_size = sg[i].flag_count & 0xffffff;
/* Allocate memory for the transfer */
p = dma_alloc_coherent(&pHba->pDev->dev, sg_size, &addr, GFP_KERNEL);
if(!p) {
printk(KERN_DEBUG"%s: Could not allocate SG buffer - size = %d buffer number %d of %d\n",
pHba->name,sg_size,i,sg_count);
rcode = -ENOMEM;
goto cleanup;
}
sg_list[sg_index++] = p; // sglist indexed with input frame, not our internal frame.
/* Copy in the user's SG buffer if necessary */
if(sg[i].flag_count & 0x04000000 /*I2O_SGL_FLAGS_DIR*/) {
// sg_simple_element API is 32 bit
if (copy_from_user(p,(void __user *)(ulong)sg[i].addr_bus, sg_size)) {
printk(KERN_DEBUG"%s: Could not copy SG buf %d FROM user\n",pHba->name,i);
rcode = -EFAULT;
goto cleanup;
}
}
/* sg_simple_element API is 32 bit, but addr < 4GB */
sg[i].addr_bus = addr;
}
}
do {
if(pHba->host)
spin_lock_irqsave(pHba->host->host_lock, flags);
// This state stops any new commands from enterring the
// controller while processing the ioctl
// pHba->state |= DPTI_STATE_IOCTL;
// We can't set this now - The scsi subsystem sets host_blocked and
// the queue empties and stops. We need a way to restart the queue
rcode = adpt_i2o_post_wait(pHba, msg, size, FOREVER);
if (rcode != 0)
printk("adpt_i2o_passthru: post wait failed %d %p\n",
rcode, reply);
// pHba->state &= ~DPTI_STATE_IOCTL;
if(pHba->host)
spin_unlock_irqrestore(pHba->host->host_lock, flags);
} while(rcode == -ETIMEDOUT);
if(rcode){
goto cleanup;
}
if(sg_offset) {
/* Copy back the Scatter Gather buffers back to user space */
u32 j;
// TODO add 64 bit API
struct sg_simple_element* sg;
int sg_size;
// re-acquire the original message to handle correctly the sg copy operation
memset(&msg, 0, MAX_MESSAGE_SIZE*4);
// get user msg size in u32s
if(get_user(size, &user_msg[0])){
rcode = -EFAULT;
goto cleanup;
}
size = size>>16;
size *= 4;
if (size > MAX_MESSAGE_SIZE) {
rcode = -EINVAL;
goto cleanup;
}
/* Copy in the user's I2O command */
if (copy_from_user (msg, user_msg, size)) {
rcode = -EFAULT;
goto cleanup;
}
sg_count = (size - sg_offset*4) / sizeof(struct sg_simple_element);
// TODO add 64 bit API
sg = (struct sg_simple_element*)(msg + sg_offset);
for (j = 0; j < sg_count; j++) {
/* Copy out the SG list to user's buffer if necessary */
if(! (sg[j].flag_count & 0x4000000 /*I2O_SGL_FLAGS_DIR*/)) {
sg_size = sg[j].flag_count & 0xffffff;
// sg_simple_element API is 32 bit
if (copy_to_user((void __user *)(ulong)sg[j].addr_bus,sg_list[j], sg_size)) {
printk(KERN_WARNING"%s: Could not copy %p TO user %x\n",pHba->name, sg_list[j], sg[j].addr_bus);
rcode = -EFAULT;
goto cleanup;
}
}
}
}
/* Copy back the reply to user space */
if (reply_size) {
// we wrote our own values for context - now restore the user supplied ones
if(copy_from_user(reply+2, user_msg+2, sizeof(u32)*2)) {
printk(KERN_WARNING"%s: Could not copy message context FROM user\n",pHba->name);
rcode = -EFAULT;
}
if(copy_to_user(user_reply, reply, reply_size)) {
printk(KERN_WARNING"%s: Could not copy reply TO user\n",pHba->name);
rcode = -EFAULT;
}
}
cleanup:
if (rcode != -ETIME && rcode != -EINTR) {
struct sg_simple_element *sg =
(struct sg_simple_element*) (msg +sg_offset);
kfree (reply);
while(sg_index) {
if(sg_list[--sg_index]) {
dma_free_coherent(&pHba->pDev->dev,
sg[sg_index].flag_count & 0xffffff,
sg_list[sg_index],
sg[sg_index].addr_bus);
}
}
}
return rcode;
}
#if defined __ia64__
static void adpt_ia64_info(sysInfo_S* si)
{
// This is all the info we need for now
// We will add more info as our new
// managmenent utility requires it
si->processorType = PROC_IA64;
}
#endif
#if defined __sparc__
static void adpt_sparc_info(sysInfo_S* si)
{
// This is all the info we need for now
// We will add more info as our new
// managmenent utility requires it
si->processorType = PROC_ULTRASPARC;
}
#endif
#if defined __alpha__
static void adpt_alpha_info(sysInfo_S* si)
{
// This is all the info we need for now
// We will add more info as our new
// managmenent utility requires it
si->processorType = PROC_ALPHA;
}
#endif
#if defined __i386__
static void adpt_i386_info(sysInfo_S* si)
{
// This is all the info we need for now
// We will add more info as our new
// managmenent utility requires it
switch (boot_cpu_data.x86) {
case CPU_386:
si->processorType = PROC_386;
break;
case CPU_486:
si->processorType = PROC_486;
break;
case CPU_586:
si->processorType = PROC_PENTIUM;
break;
default: // Just in case
si->processorType = PROC_PENTIUM;
break;
}
}
#endif
/*
* This routine returns information about the system. This does not effect
* any logic and if the info is wrong - it doesn't matter.
*/
/* Get all the info we can not get from kernel services */
static int adpt_system_info(void __user *buffer)
{
sysInfo_S si;
memset(&si, 0, sizeof(si));
si.osType = OS_LINUX;
si.osMajorVersion = 0;
si.osMinorVersion = 0;
si.osRevision = 0;
si.busType = SI_PCI_BUS;
si.processorFamily = DPTI_sig.dsProcessorFamily;
#if defined __i386__
adpt_i386_info(&si);
#elif defined (__ia64__)
adpt_ia64_info(&si);
#elif defined(__sparc__)
adpt_sparc_info(&si);
#elif defined (__alpha__)
adpt_alpha_info(&si);
#else
si.processorType = 0xff ;
#endif
if (copy_to_user(buffer, &si, sizeof(si))){
printk(KERN_WARNING"dpti: Could not copy buffer TO user\n");
return -EFAULT;
}
return 0;
}
static int adpt_ioctl(struct inode *inode, struct file *file, uint cmd, ulong arg)
{
int minor;
int error = 0;
adpt_hba* pHba;
ulong flags = 0;
void __user *argp = (void __user *)arg;
minor = iminor(inode);
if (minor >= DPTI_MAX_HBA){
return -ENXIO;
}
mutex_lock(&adpt_configuration_lock);
for (pHba = hba_chain; pHba; pHba = pHba->next) {
if (pHba->unit == minor) {
break; /* found adapter */
}
}
mutex_unlock(&adpt_configuration_lock);
if(pHba == NULL){
return -ENXIO;
}
while((volatile u32) pHba->state & DPTI_STATE_RESET )
schedule_timeout_uninterruptible(2);
switch (cmd) {
// TODO: handle 3 cases
case DPT_SIGNATURE:
if (copy_to_user(argp, &DPTI_sig, sizeof(DPTI_sig))) {
return -EFAULT;
}
break;
case I2OUSRCMD:
return adpt_i2o_passthru(pHba, argp);
case DPT_CTRLINFO:{
drvrHBAinfo_S HbaInfo;
#define FLG_OSD_PCI_VALID 0x0001
#define FLG_OSD_DMA 0x0002
#define FLG_OSD_I2O 0x0004
memset(&HbaInfo, 0, sizeof(HbaInfo));
HbaInfo.drvrHBAnum = pHba->unit;
HbaInfo.baseAddr = (ulong) pHba->base_addr_phys;
HbaInfo.blinkState = adpt_read_blink_led(pHba);
HbaInfo.pciBusNum = pHba->pDev->bus->number;
HbaInfo.pciDeviceNum=PCI_SLOT(pHba->pDev->devfn);
HbaInfo.Interrupt = pHba->pDev->irq;
HbaInfo.hbaFlags = FLG_OSD_PCI_VALID | FLG_OSD_DMA | FLG_OSD_I2O;
if(copy_to_user(argp, &HbaInfo, sizeof(HbaInfo))){
printk(KERN_WARNING"%s: Could not copy HbaInfo TO user\n",pHba->name);
return -EFAULT;
}
break;
}
case DPT_SYSINFO:
return adpt_system_info(argp);
case DPT_BLINKLED:{
u32 value;
value = (u32)adpt_read_blink_led(pHba);
if (copy_to_user(argp, &value, sizeof(value))) {
return -EFAULT;
}
break;
}
case I2ORESETCMD:
if(pHba->host)
spin_lock_irqsave(pHba->host->host_lock, flags);
adpt_hba_reset(pHba);
if(pHba->host)
spin_unlock_irqrestore(pHba->host->host_lock, flags);
break;
case I2ORESCANCMD:
adpt_rescan(pHba);
break;
default:
return -EINVAL;
}
return error;
}
static long adpt_unlocked_ioctl(struct file *file, uint cmd, ulong arg)
{
struct inode *inode;
long ret;
inode = file->f_dentry->d_inode;
mutex_lock(&adpt_mutex);
ret = adpt_ioctl(inode, file, cmd, arg);
mutex_unlock(&adpt_mutex);
return ret;
}
#ifdef CONFIG_COMPAT
static long compat_adpt_ioctl(struct file *file,
unsigned int cmd, unsigned long arg)
{
struct inode *inode;
long ret;
inode = file->f_dentry->d_inode;
mutex_lock(&adpt_mutex);
switch(cmd) {
case DPT_SIGNATURE:
case I2OUSRCMD:
case DPT_CTRLINFO:
case DPT_SYSINFO:
case DPT_BLINKLED:
case I2ORESETCMD:
case I2ORESCANCMD:
case (DPT_TARGET_BUSY & 0xFFFF):
case DPT_TARGET_BUSY:
ret = adpt_ioctl(inode, file, cmd, arg);
break;
default:
ret = -ENOIOCTLCMD;
}
mutex_unlock(&adpt_mutex);
return ret;
}
#endif
static irqreturn_t adpt_isr(int irq, void *dev_id)
{
struct scsi_cmnd* cmd;
adpt_hba* pHba = dev_id;
u32 m;
void __iomem *reply;
u32 status=0;
u32 context;
ulong flags = 0;
int handled = 0;
if (pHba == NULL){
printk(KERN_WARNING"adpt_isr: NULL dev_id\n");
return IRQ_NONE;
}
if(pHba->host)
spin_lock_irqsave(pHba->host->host_lock, flags);
while( readl(pHba->irq_mask) & I2O_INTERRUPT_PENDING_B) {
m = readl(pHba->reply_port);
if(m == EMPTY_QUEUE){
// Try twice then give up
rmb();
m = readl(pHba->reply_port);
if(m == EMPTY_QUEUE){
// This really should not happen
printk(KERN_ERR"dpti: Could not get reply frame\n");
goto out;
}
}
if (pHba->reply_pool_pa <= m &&
m < pHba->reply_pool_pa +
(pHba->reply_fifo_size * REPLY_FRAME_SIZE * 4)) {
reply = (u8 *)pHba->reply_pool +
(m - pHba->reply_pool_pa);
} else {
/* Ick, we should *never* be here */
printk(KERN_ERR "dpti: reply frame not from pool\n");
reply = (u8 *)bus_to_virt(m);
}
if (readl(reply) & MSG_FAIL) {
u32 old_m = readl(reply+28);
void __iomem *msg;
u32 old_context;
PDEBUG("%s: Failed message\n",pHba->name);
if(old_m >= 0x100000){
printk(KERN_ERR"%s: Bad preserved MFA (%x)- dropping frame\n",pHba->name,old_m);
writel(m,pHba->reply_port);
continue;
}
// Transaction context is 0 in failed reply frame
msg = pHba->msg_addr_virt + old_m;
old_context = readl(msg+12);
writel(old_context, reply+12);
adpt_send_nop(pHba, old_m);
}
context = readl(reply+8);
if(context & 0x40000000){ // IOCTL
void *p = adpt_ioctl_from_context(pHba, readl(reply+12));
if( p != NULL) {
memcpy_fromio(p, reply, REPLY_FRAME_SIZE * 4);
}
// All IOCTLs will also be post wait
}
if(context & 0x80000000){ // Post wait message
status = readl(reply+16);
if(status >> 24){
status &= 0xffff; /* Get detail status */
} else {
status = I2O_POST_WAIT_OK;
}
if(!(context & 0x40000000)) {
cmd = adpt_cmd_from_context(pHba,
readl(reply+12));
if(cmd != NULL) {
printk(KERN_WARNING"%s: Apparent SCSI cmd in Post Wait Context - cmd=%p context=%x\n", pHba->name, cmd, context);
}
}
adpt_i2o_post_wait_complete(context, status);
} else { // SCSI message
cmd = adpt_cmd_from_context (pHba, readl(reply+12));
if(cmd != NULL){
scsi_dma_unmap(cmd);
if(cmd->serial_number != 0) { // If not timedout
adpt_i2o_to_scsi(reply, cmd);
}
}
}
writel(m, pHba->reply_port);
wmb();
rmb();
}
handled = 1;
out: if(pHba->host)
spin_unlock_irqrestore(pHba->host->host_lock, flags);
return IRQ_RETVAL(handled);
}
static s32 adpt_scsi_to_i2o(adpt_hba* pHba, struct scsi_cmnd* cmd, struct adpt_device* d)
{
int i;
u32 msg[MAX_MESSAGE_SIZE];
u32* mptr;
u32* lptr;
u32 *lenptr;
int direction;
int scsidir;
int nseg;
u32 len;
u32 reqlen;
s32 rcode;
dma_addr_t addr;
memset(msg, 0 , sizeof(msg));
len = scsi_bufflen(cmd);
direction = 0x00000000;
scsidir = 0x00000000; // DATA NO XFER
if(len) {
/*
* Set SCBFlags to indicate if data is being transferred
* in or out, or no data transfer
* Note: Do not have to verify index is less than 0 since
* cmd->cmnd[0] is an unsigned char
*/
switch(cmd->sc_data_direction){
case DMA_FROM_DEVICE:
scsidir =0x40000000; // DATA IN (iop<--dev)
break;
case DMA_TO_DEVICE:
direction=0x04000000; // SGL OUT
scsidir =0x80000000; // DATA OUT (iop-->dev)
break;
case DMA_NONE:
break;
case DMA_BIDIRECTIONAL:
scsidir =0x40000000; // DATA IN (iop<--dev)
// Assume In - and continue;
break;
default:
printk(KERN_WARNING"%s: scsi opcode 0x%x not supported.\n",
pHba->name, cmd->cmnd[0]);
cmd->result = (DID_OK <<16) | (INITIATOR_ERROR << 8);
cmd->scsi_done(cmd);
return 0;
}
}
// msg[0] is set later
// I2O_CMD_SCSI_EXEC
msg[1] = ((0xff<<24)|(HOST_TID<<12)|d->tid);
msg[2] = 0;
msg[3] = adpt_cmd_to_context(cmd); /* Want SCSI control block back */
// Our cards use the transaction context as the tag for queueing
// Adaptec/DPT Private stuff
msg[4] = I2O_CMD_SCSI_EXEC|(DPT_ORGANIZATION_ID<<16);
msg[5] = d->tid;
/* Direction, disconnect ok | sense data | simple queue , CDBLen */
// I2O_SCB_FLAG_ENABLE_DISCONNECT |
// I2O_SCB_FLAG_SIMPLE_QUEUE_TAG |
// I2O_SCB_FLAG_SENSE_DATA_IN_MESSAGE;
msg[6] = scsidir|0x20a00000|cmd->cmd_len;
mptr=msg+7;
// Write SCSI command into the message - always 16 byte block
memset(mptr, 0, 16);
memcpy(mptr, cmd->cmnd, cmd->cmd_len);
mptr+=4;
lenptr=mptr++; /* Remember me - fill in when we know */
if (dpt_dma64(pHba)) {
reqlen = 16; // SINGLE SGE
*mptr++ = (0x7C<<24)+(2<<16)+0x02; /* Enable 64 bit */
*mptr++ = 1 << PAGE_SHIFT;
} else {
reqlen = 14; // SINGLE SGE
}
/* Now fill in the SGList and command */
nseg = scsi_dma_map(cmd);
BUG_ON(nseg < 0);
if (nseg) {
struct scatterlist *sg;
len = 0;
scsi_for_each_sg(cmd, sg, nseg, i) {
lptr = mptr;
*mptr++ = direction|0x10000000|sg_dma_len(sg);
len+=sg_dma_len(sg);
addr = sg_dma_address(sg);
*mptr++ = dma_low(addr);
if (dpt_dma64(pHba))
*mptr++ = dma_high(addr);
/* Make this an end of list */
if (i == nseg - 1)
*lptr = direction|0xD0000000|sg_dma_len(sg);
}
reqlen = mptr - msg;
*lenptr = len;
if(cmd->underflow && len != cmd->underflow){
printk(KERN_WARNING"Cmd len %08X Cmd underflow %08X\n",
len, cmd->underflow);
}
} else {
*lenptr = len = 0;
reqlen = 12;
}
/* Stick the headers on */
msg[0] = reqlen<<16 | ((reqlen > 12) ? SGL_OFFSET_12 : SGL_OFFSET_0);
// Send it on it's way
rcode = adpt_i2o_post_this(pHba, msg, reqlen<<2);
if (rcode == 0) {
return 0;
}
return rcode;
}
static s32 adpt_scsi_host_alloc(adpt_hba* pHba, struct scsi_host_template *sht)
{
struct Scsi_Host *host;
host = scsi_host_alloc(sht, sizeof(adpt_hba*));
if (host == NULL) {
printk("%s: scsi_host_alloc returned NULL\n", pHba->name);
return -1;
}
host->hostdata[0] = (unsigned long)pHba;
pHba->host = host;
host->irq = pHba->pDev->irq;
/* no IO ports, so don't have to set host->io_port and
* host->n_io_port
*/
host->io_port = 0;
host->n_io_port = 0;
/* see comments in scsi_host.h */
host->max_id = 16;
host->max_lun = 256;
host->max_channel = pHba->top_scsi_channel + 1;
host->cmd_per_lun = 1;
host->unique_id = (u32)sys_tbl_pa + pHba->unit;
host->sg_tablesize = pHba->sg_tablesize;
host->can_queue = pHba->post_fifo_size;
return 0;
}
static s32 adpt_i2o_to_scsi(void __iomem *reply, struct scsi_cmnd* cmd)
{
adpt_hba* pHba;
u32 hba_status;
u32 dev_status;
u32 reply_flags = readl(reply) & 0xff00; // Leave it shifted up 8 bits
// I know this would look cleaner if I just read bytes
// but the model I have been using for all the rest of the
// io is in 4 byte words - so I keep that model
u16 detailed_status = readl(reply+16) &0xffff;
dev_status = (detailed_status & 0xff);
hba_status = detailed_status >> 8;
// calculate resid for sg
scsi_set_resid(cmd, scsi_bufflen(cmd) - readl(reply+20));
pHba = (adpt_hba*) cmd->device->host->hostdata[0];
cmd->sense_buffer[0] = '\0'; // initialize sense valid flag to false
if(!(reply_flags & MSG_FAIL)) {
switch(detailed_status & I2O_SCSI_DSC_MASK) {
case I2O_SCSI_DSC_SUCCESS:
cmd->result = (DID_OK << 16);
// handle underflow
if (readl(reply+20) < cmd->underflow) {
cmd->result = (DID_ERROR <<16);
printk(KERN_WARNING"%s: SCSI CMD underflow\n",pHba->name);
}
break;
case I2O_SCSI_DSC_REQUEST_ABORTED:
cmd->result = (DID_ABORT << 16);
break;
case I2O_SCSI_DSC_PATH_INVALID:
case I2O_SCSI_DSC_DEVICE_NOT_PRESENT:
case I2O_SCSI_DSC_SELECTION_TIMEOUT:
case I2O_SCSI_DSC_COMMAND_TIMEOUT:
case I2O_SCSI_DSC_NO_ADAPTER:
case I2O_SCSI_DSC_RESOURCE_UNAVAILABLE:
printk(KERN_WARNING"%s: SCSI Timeout-Device (%d,%d,%d) hba status=0x%x, dev status=0x%x, cmd=0x%x\n",
pHba->name, (u32)cmd->device->channel, (u32)cmd->device->id, (u32)cmd->device->lun, hba_status, dev_status, cmd->cmnd[0]);
cmd->result = (DID_TIME_OUT << 16);
break;
case I2O_SCSI_DSC_ADAPTER_BUSY:
case I2O_SCSI_DSC_BUS_BUSY:
cmd->result = (DID_BUS_BUSY << 16);
break;
case I2O_SCSI_DSC_SCSI_BUS_RESET:
case I2O_SCSI_DSC_BDR_MESSAGE_SENT:
cmd->result = (DID_RESET << 16);
break;
case I2O_SCSI_DSC_PARITY_ERROR_FAILURE:
printk(KERN_WARNING"%s: SCSI CMD parity error\n",pHba->name);
cmd->result = (DID_PARITY << 16);
break;
case I2O_SCSI_DSC_UNABLE_TO_ABORT:
case I2O_SCSI_DSC_COMPLETE_WITH_ERROR:
case I2O_SCSI_DSC_UNABLE_TO_TERMINATE:
case I2O_SCSI_DSC_MR_MESSAGE_RECEIVED:
case I2O_SCSI_DSC_AUTOSENSE_FAILED:
case I2O_SCSI_DSC_DATA_OVERRUN:
case I2O_SCSI_DSC_UNEXPECTED_BUS_FREE:
case I2O_SCSI_DSC_SEQUENCE_FAILURE:
case I2O_SCSI_DSC_REQUEST_LENGTH_ERROR:
case I2O_SCSI_DSC_PROVIDE_FAILURE:
case I2O_SCSI_DSC_REQUEST_TERMINATED:
case I2O_SCSI_DSC_IDE_MESSAGE_SENT:
case I2O_SCSI_DSC_UNACKNOWLEDGED_EVENT:
case I2O_SCSI_DSC_MESSAGE_RECEIVED:
case I2O_SCSI_DSC_INVALID_CDB:
case I2O_SCSI_DSC_LUN_INVALID:
case I2O_SCSI_DSC_SCSI_TID_INVALID:
case I2O_SCSI_DSC_FUNCTION_UNAVAILABLE:
case I2O_SCSI_DSC_NO_NEXUS:
case I2O_SCSI_DSC_CDB_RECEIVED:
case I2O_SCSI_DSC_LUN_ALREADY_ENABLED:
case I2O_SCSI_DSC_QUEUE_FROZEN:
case I2O_SCSI_DSC_REQUEST_INVALID:
default:
printk(KERN_WARNING"%s: SCSI error %0x-Device(%d,%d,%d) hba_status=0x%x, dev_status=0x%x, cmd=0x%x\n",
pHba->name, detailed_status & I2O_SCSI_DSC_MASK, (u32)cmd->device->channel, (u32)cmd->device->id, (u32)cmd->device->lun,
hba_status, dev_status, cmd->cmnd[0]);
cmd->result = (DID_ERROR << 16);
break;
}
// copy over the request sense data if it was a check
// condition status
if (dev_status == SAM_STAT_CHECK_CONDITION) {
u32 len = min(SCSI_SENSE_BUFFERSIZE, 40);
// Copy over the sense data
memcpy_fromio(cmd->sense_buffer, (reply+28) , len);
if(cmd->sense_buffer[0] == 0x70 /* class 7 */ &&
cmd->sense_buffer[2] == DATA_PROTECT ){
/* This is to handle an array failed */
cmd->result = (DID_TIME_OUT << 16);
printk(KERN_WARNING"%s: SCSI Data Protect-Device (%d,%d,%d) hba_status=0x%x, dev_status=0x%x, cmd=0x%x\n",
pHba->name, (u32)cmd->device->channel, (u32)cmd->device->id, (u32)cmd->device->lun,
hba_status, dev_status, cmd->cmnd[0]);
}
}
} else {
/* In this condtion we could not talk to the tid
* the card rejected it. We should signal a retry
* for a limitted number of retries.
*/
cmd->result = (DID_TIME_OUT << 16);
printk(KERN_WARNING"%s: I2O MSG_FAIL - Device (%d,%d,%d) tid=%d, cmd=0x%x\n",
pHba->name, (u32)cmd->device->channel, (u32)cmd->device->id, (u32)cmd->device->lun,
((struct adpt_device*)(cmd->device->hostdata))->tid, cmd->cmnd[0]);
}
cmd->result |= (dev_status);
if(cmd->scsi_done != NULL){
cmd->scsi_done(cmd);
}
return cmd->result;
}
static s32 adpt_rescan(adpt_hba* pHba)
{
s32 rcode;
ulong flags = 0;
if(pHba->host)
spin_lock_irqsave(pHba->host->host_lock, flags);
if ((rcode=adpt_i2o_lct_get(pHba)) < 0)
goto out;
if ((rcode=adpt_i2o_reparse_lct(pHba)) < 0)
goto out;
rcode = 0;
out: if(pHba->host)
spin_unlock_irqrestore(pHba->host->host_lock, flags);
return rcode;
}
static s32 adpt_i2o_reparse_lct(adpt_hba* pHba)
{
int i;
int max;
int tid;
struct i2o_device *d;
i2o_lct *lct = pHba->lct;
u8 bus_no = 0;
s16 scsi_id;
s16 scsi_lun;
u32 buf[10]; // at least 8 u32's
struct adpt_device* pDev = NULL;
struct i2o_device* pI2o_dev = NULL;
if (lct == NULL) {
printk(KERN_ERR "%s: LCT is empty???\n",pHba->name);
return -1;
}
max = lct->table_size;
max -= 3;
max /= 9;
// Mark each drive as unscanned
for (d = pHba->devices; d; d = d->next) {
pDev =(struct adpt_device*) d->owner;
if(!pDev){
continue;
}
pDev->state |= DPTI_DEV_UNSCANNED;
}
printk(KERN_INFO "%s: LCT has %d entries.\n", pHba->name,max);
for(i=0;i<max;i++) {
if( lct->lct_entry[i].user_tid != 0xfff){
continue;
}
if( lct->lct_entry[i].class_id == I2O_CLASS_RANDOM_BLOCK_STORAGE ||
lct->lct_entry[i].class_id == I2O_CLASS_SCSI_PERIPHERAL ||
lct->lct_entry[i].class_id == I2O_CLASS_FIBRE_CHANNEL_PERIPHERAL ){
tid = lct->lct_entry[i].tid;
if(adpt_i2o_query_scalar(pHba, tid, 0x8000, -1, buf, 32)<0) {
printk(KERN_ERR"%s: Could not query device\n",pHba->name);
continue;
}
bus_no = buf[0]>>16;
if (bus_no >= MAX_CHANNEL) { /* Something wrong skip it */
printk(KERN_WARNING
"%s: Channel number %d out of range\n",
pHba->name, bus_no);
continue;
}
scsi_id = buf[1];
scsi_lun = (buf[2]>>8 )&0xff;
pDev = pHba->channel[bus_no].device[scsi_id];
/* da lun */
while(pDev) {
if(pDev->scsi_lun == scsi_lun) {
break;
}
pDev = pDev->next_lun;
}
if(!pDev ) { // Something new add it
d = kmalloc(sizeof(struct i2o_device),
GFP_ATOMIC);
if(d==NULL)
{
printk(KERN_CRIT "Out of memory for I2O device data.\n");
return -ENOMEM;
}
d->controller = pHba;
d->next = NULL;
memcpy(&d->lct_data, &lct->lct_entry[i], sizeof(i2o_lct_entry));
d->flags = 0;
adpt_i2o_report_hba_unit(pHba, d);
adpt_i2o_install_device(pHba, d);
pDev = pHba->channel[bus_no].device[scsi_id];
if( pDev == NULL){
pDev =
kzalloc(sizeof(struct adpt_device),
GFP_ATOMIC);
if(pDev == NULL) {
return -ENOMEM;
}
pHba->channel[bus_no].device[scsi_id] = pDev;
} else {
while (pDev->next_lun) {
pDev = pDev->next_lun;
}
pDev = pDev->next_lun =
kzalloc(sizeof(struct adpt_device),
GFP_ATOMIC);
if(pDev == NULL) {
return -ENOMEM;
}
}
pDev->tid = d->lct_data.tid;
pDev->scsi_channel = bus_no;
pDev->scsi_id = scsi_id;
pDev->scsi_lun = scsi_lun;
pDev->pI2o_dev = d;
d->owner = pDev;
pDev->type = (buf[0])&0xff;
pDev->flags = (buf[0]>>8)&0xff;
// Too late, SCSI system has made up it's mind, but what the hey ...
if(scsi_id > pHba->top_scsi_id){
pHba->top_scsi_id = scsi_id;
}
if(scsi_lun > pHba->top_scsi_lun){
pHba->top_scsi_lun = scsi_lun;
}
continue;
} // end of new i2o device
// We found an old device - check it
while(pDev) {
if(pDev->scsi_lun == scsi_lun) {
if(!scsi_device_online(pDev->pScsi_dev)) {
printk(KERN_WARNING"%s: Setting device (%d,%d,%d) back online\n",
pHba->name,bus_no,scsi_id,scsi_lun);
if (pDev->pScsi_dev) {
scsi_device_set_state(pDev->pScsi_dev, SDEV_RUNNING);
}
}
d = pDev->pI2o_dev;
if(d->lct_data.tid != tid) { // something changed
pDev->tid = tid;
memcpy(&d->lct_data, &lct->lct_entry[i], sizeof(i2o_lct_entry));
if (pDev->pScsi_dev) {
pDev->pScsi_dev->changed = TRUE;
pDev->pScsi_dev->removable = TRUE;
}
}
// Found it - mark it scanned
pDev->state = DPTI_DEV_ONLINE;
break;
}
pDev = pDev->next_lun;
}
}
}
for (pI2o_dev = pHba->devices; pI2o_dev; pI2o_dev = pI2o_dev->next) {
pDev =(struct adpt_device*) pI2o_dev->owner;
if(!pDev){
continue;
}
// Drive offline drives that previously existed but could not be found
// in the LCT table
if (pDev->state & DPTI_DEV_UNSCANNED){
pDev->state = DPTI_DEV_OFFLINE;
printk(KERN_WARNING"%s: Device (%d,%d,%d) offline\n",pHba->name,pDev->scsi_channel,pDev->scsi_id,pDev->scsi_lun);
if (pDev->pScsi_dev) {
scsi_device_set_state(pDev->pScsi_dev, SDEV_OFFLINE);
}
}
}
return 0;
}
static void adpt_fail_posted_scbs(adpt_hba* pHba)
{
struct scsi_cmnd* cmd = NULL;
struct scsi_device* d = NULL;
shost_for_each_device(d, pHba->host) {
unsigned long flags;
spin_lock_irqsave(&d->list_lock, flags);
list_for_each_entry(cmd, &d->cmd_list, list) {
if(cmd->serial_number == 0){
continue;
}
cmd->result = (DID_OK << 16) | (QUEUE_FULL <<1);
cmd->scsi_done(cmd);
}
spin_unlock_irqrestore(&d->list_lock, flags);
}
}
/*============================================================================
* Routines from i2o subsystem
*============================================================================
*/
/*
* Bring an I2O controller into HOLD state. See the spec.
*/
static int adpt_i2o_activate_hba(adpt_hba* pHba)
{
int rcode;
if(pHba->initialized ) {
if (adpt_i2o_status_get(pHba) < 0) {
if((rcode = adpt_i2o_reset_hba(pHba)) != 0){
printk(KERN_WARNING"%s: Could NOT reset.\n", pHba->name);
return rcode;
}
if (adpt_i2o_status_get(pHba) < 0) {
printk(KERN_INFO "HBA not responding.\n");
return -1;
}
}
if(pHba->status_block->iop_state == ADAPTER_STATE_FAULTED) {
printk(KERN_CRIT "%s: hardware fault\n", pHba->name);
return -1;
}
if (pHba->status_block->iop_state == ADAPTER_STATE_READY ||
pHba->status_block->iop_state == ADAPTER_STATE_OPERATIONAL ||
pHba->status_block->iop_state == ADAPTER_STATE_HOLD ||
pHba->status_block->iop_state == ADAPTER_STATE_FAILED) {
adpt_i2o_reset_hba(pHba);
if (adpt_i2o_status_get(pHba) < 0 || pHba->status_block->iop_state != ADAPTER_STATE_RESET) {
printk(KERN_ERR "%s: Failed to initialize.\n", pHba->name);
return -1;
}
}
} else {
if((rcode = adpt_i2o_reset_hba(pHba)) != 0){
printk(KERN_WARNING"%s: Could NOT reset.\n", pHba->name);
return rcode;
}
}
if (adpt_i2o_init_outbound_q(pHba) < 0) {
return -1;
}
/* In HOLD state */
if (adpt_i2o_hrt_get(pHba) < 0) {
return -1;
}
return 0;
}
/*
* Bring a controller online into OPERATIONAL state.
*/
static int adpt_i2o_online_hba(adpt_hba* pHba)
{
if (adpt_i2o_systab_send(pHba) < 0) {
adpt_i2o_delete_hba(pHba);
return -1;
}
/* In READY state */
if (adpt_i2o_enable_hba(pHba) < 0) {
adpt_i2o_delete_hba(pHba);
return -1;
}
/* In OPERATIONAL state */
return 0;
}
static s32 adpt_send_nop(adpt_hba*pHba,u32 m)
{
u32 __iomem *msg;
ulong timeout = jiffies + 5*HZ;
while(m == EMPTY_QUEUE){
rmb();
m = readl(pHba->post_port);
if(m != EMPTY_QUEUE){
break;
}
if(time_after(jiffies,timeout)){
printk(KERN_ERR "%s: Timeout waiting for message frame!\n",pHba->name);
return 2;
}
schedule_timeout_uninterruptible(1);
}
msg = (u32 __iomem *)(pHba->msg_addr_virt + m);
writel( THREE_WORD_MSG_SIZE | SGL_OFFSET_0,&msg[0]);
writel( I2O_CMD_UTIL_NOP << 24 | HOST_TID << 12 | 0,&msg[1]);
writel( 0,&msg[2]);
wmb();
writel(m, pHba->post_port);
wmb();
return 0;
}
static s32 adpt_i2o_init_outbound_q(adpt_hba* pHba)
{
u8 *status;
dma_addr_t addr;
u32 __iomem *msg = NULL;
int i;
ulong timeout = jiffies + TMOUT_INITOUTBOUND*HZ;
u32 m;
do {
rmb();
m = readl(pHba->post_port);
if (m != EMPTY_QUEUE) {
break;
}
if(time_after(jiffies,timeout)){
printk(KERN_WARNING"%s: Timeout waiting for message frame\n",pHba->name);
return -ETIMEDOUT;
}
schedule_timeout_uninterruptible(1);
} while(m == EMPTY_QUEUE);
msg=(u32 __iomem *)(pHba->msg_addr_virt+m);
status = dma_alloc_coherent(&pHba->pDev->dev, 4, &addr, GFP_KERNEL);
if (!status) {
adpt_send_nop(pHba, m);
printk(KERN_WARNING"%s: IOP reset failed - no free memory.\n",
pHba->name);
return -ENOMEM;
}
memset(status, 0, 4);
writel(EIGHT_WORD_MSG_SIZE| SGL_OFFSET_6, &msg[0]);
writel(I2O_CMD_OUTBOUND_INIT<<24 | HOST_TID<<12 | ADAPTER_TID, &msg[1]);
writel(0, &msg[2]);
writel(0x0106, &msg[3]); /* Transaction context */
writel(4096, &msg[4]); /* Host page frame size */
writel((REPLY_FRAME_SIZE)<<16|0x80, &msg[5]); /* Outbound msg frame size and Initcode */
writel(0xD0000004, &msg[6]); /* Simple SG LE, EOB */
writel((u32)addr, &msg[7]);
writel(m, pHba->post_port);
wmb();
// Wait for the reply status to come back
do {
if (*status) {
if (*status != 0x01 /*I2O_EXEC_OUTBOUND_INIT_IN_PROGRESS*/) {
break;
}
}
rmb();
if(time_after(jiffies,timeout)){
printk(KERN_WARNING"%s: Timeout Initializing\n",pHba->name);
/* We lose 4 bytes of "status" here, but we
cannot free these because controller may
awake and corrupt those bytes at any time */
/* dma_free_coherent(&pHba->pDev->dev, 4, status, addr); */
return -ETIMEDOUT;
}
schedule_timeout_uninterruptible(1);
} while (1);
// If the command was successful, fill the fifo with our reply
// message packets
if(*status != 0x04 /*I2O_EXEC_OUTBOUND_INIT_COMPLETE*/) {
dma_free_coherent(&pHba->pDev->dev, 4, status, addr);
return -2;
}
dma_free_coherent(&pHba->pDev->dev, 4, status, addr);
if(pHba->reply_pool != NULL) {
dma_free_coherent(&pHba->pDev->dev,
pHba->reply_fifo_size * REPLY_FRAME_SIZE * 4,
pHba->reply_pool, pHba->reply_pool_pa);
}
pHba->reply_pool = dma_alloc_coherent(&pHba->pDev->dev,
pHba->reply_fifo_size * REPLY_FRAME_SIZE * 4,
&pHba->reply_pool_pa, GFP_KERNEL);
if (!pHba->reply_pool) {
printk(KERN_ERR "%s: Could not allocate reply pool\n", pHba->name);
return -ENOMEM;
}
memset(pHba->reply_pool, 0 , pHba->reply_fifo_size * REPLY_FRAME_SIZE * 4);
for(i = 0; i < pHba->reply_fifo_size; i++) {
writel(pHba->reply_pool_pa + (i * REPLY_FRAME_SIZE * 4),
pHba->reply_port);
wmb();
}
adpt_i2o_status_get(pHba);
return 0;
}
/*
* I2O System Table. Contains information about
* all the IOPs in the system. Used to inform IOPs
* about each other's existence.
*
* sys_tbl_ver is the CurrentChangeIndicator that is
* used by IOPs to track changes.
*/
static s32 adpt_i2o_status_get(adpt_hba* pHba)
{
ulong timeout;
u32 m;
u32 __iomem *