James,
Please drop this patch since it won't build with the move of
libata to drivers/ata. Will send an updated patch shortly.
Should this be going through your tree or Jeff's? It might be simpler
to go through Jeff's tree.
Thanks,
Brian
Brian King wrote:
> Adds support to attach SATA devices to ipr SAS adapters.
>
> Signed-off-by: Brian King <brking@xxxxxxxxxx>
> ---
>
> libata-dev-bjking1/drivers/scsi/Kconfig | 1
> libata-dev-bjking1/drivers/scsi/Makefile | 2
> libata-dev-bjking1/drivers/scsi/ipr.c | 676 ++++++++++++++++++++++++++++++-
> libata-dev-bjking1/drivers/scsi/ipr.h | 18
> 4 files changed, 676 insertions(+), 21 deletions(-)
>
> diff -puN drivers/scsi/ipr.h~ipr_sata_with_libata_changes drivers/scsi/ipr.h
> --- libata-dev/drivers/scsi/ipr.h~ipr_sata_with_libata_changes 2006-08-07 12:44:09.000000000 -0500
> +++ libata-dev-bjking1/drivers/scsi/ipr.h 2006-08-07 12:44:09.000000000 -0500
> @@ -28,6 +28,7 @@
>
> #include <linux/types.h>
> #include <linux/completion.h>
> +#include <linux/libata.h>
> #include <linux/list.h>
> #include <linux/kref.h>
> #include <scsi/scsi.h>
> @@ -36,8 +37,8 @@
> /*
> * Literals
> */
> -#define IPR_DRIVER_VERSION "2.1.4"
> -#define IPR_DRIVER_DATE "(August 2, 2006)"
> +#define IPR_DRIVER_VERSION "2.2.0"
> +#define IPR_DRIVER_DATE "(August 3, 2006)"
>
> /*
> * IPR_MAX_CMD_PER_LUN: This defines the maximum number of outstanding
> @@ -849,6 +850,13 @@ struct ipr_bus_attributes {
> u32 max_xfer_rate;
> };
>
> +struct ipr_sata_port {
> + struct ipr_ioa_cfg *ioa_cfg;
> + struct ata_port *ap;
> + struct ipr_resource_entry *res;
> + struct ipr_ioasa_gata ioasa;
> +};
> +
> struct ipr_resource_entry {
> struct ipr_config_table_entry cfgte;
> u8 needs_sync_complete:1;
> @@ -858,6 +866,7 @@ struct ipr_resource_entry {
> u8 resetting_device:1;
>
> struct scsi_device *sdev;
> + struct ipr_sata_port *sata_port;
> struct list_head queue;
> };
>
> @@ -928,10 +937,11 @@ struct ipr_trace_entry {
> u32 time;
>
> u8 op_code;
> + u8 ata_op_code;
> u8 type;
> #define IPR_TRACE_START 0x00
> #define IPR_TRACE_FINISH 0xff
> - u16 cmd_index;
> + u8 cmd_index;
>
> __be32 res_handle;
> union {
> @@ -1073,6 +1083,7 @@ struct ipr_ioa_cfg {
>
> struct ipr_cmnd *reset_cmd;
>
> + struct ata_host_set ata_host_set;
> char ipr_cmd_label[8];
> #define IPR_CMD_LABEL "ipr_cmnd"
> struct ipr_cmnd *ipr_cmnd_list[IPR_NUM_CMD_BLKS];
> @@ -1085,6 +1096,7 @@ struct ipr_cmnd {
> struct ipr_ioadl_desc ioadl[IPR_NUM_IOADL_ENTRIES];
> struct list_head queue;
> struct scsi_cmnd *scsi_cmd;
> + struct ata_queued_cmd *qc;
> struct completion completion;
> struct timer_list timer;
> void (*done) (struct ipr_cmnd *);
> diff -puN drivers/scsi/ipr.c~ipr_sata_with_libata_changes drivers/scsi/ipr.c
> --- libata-dev/drivers/scsi/ipr.c~ipr_sata_with_libata_changes 2006-08-07 12:44:09.000000000 -0500
> +++ libata-dev-bjking1/drivers/scsi/ipr.c 2006-08-09 09:50:12.000000000 -0500
> @@ -70,6 +70,7 @@
> #include <linux/firmware.h>
> #include <linux/module.h>
> #include <linux/moduleparam.h>
> +#include <linux/libata.h>
> #include <asm/io.h>
> #include <asm/irq.h>
> #include <asm/processor.h>
> @@ -78,6 +79,7 @@
> #include <scsi/scsi_tcq.h>
> #include <scsi/scsi_eh.h>
> #include <scsi/scsi_cmnd.h>
> +#include <scsi/scsi_transport.h>
> #include "ipr.h"
>
> /*
> @@ -261,6 +263,8 @@ struct ipr_error_table_t ipr_error_table
> "Device bus status error"},
> {0x04448600, 0, 1,
> "8157: IOA error requiring IOA reset to recover"},
> + {0x04448700, 0, 0,
> + "ATA device status error"},
> {0x04490000, 0, 0,
> "Message reject received from the device"},
> {0x04449200, 0, 1,
> @@ -453,7 +457,8 @@ static void ipr_trc_hook(struct ipr_cmnd
> trace_entry->time = jiffies;
> trace_entry->op_code = ipr_cmd->ioarcb.cmd_pkt.cdb[0];
> trace_entry->type = type;
> - trace_entry->cmd_index = ipr_cmd->cmd_index;
> + trace_entry->ata_op_code = ipr_cmd->ioarcb.add_data.u.regs.command;
> + trace_entry->cmd_index = ipr_cmd->cmd_index & 0xff;
> trace_entry->res_handle = ipr_cmd->ioarcb.res_handle;
> trace_entry->u.add_data = add_data;
> }
> @@ -480,8 +485,10 @@ static void ipr_reinit_ipr_cmnd(struct i
> ioarcb->read_ioadl_len = 0;
> ioasa->ioasc = 0;
> ioasa->residual_data_len = 0;
> + ioasa->u.gata.status = 0;
>
> ipr_cmd->scsi_cmd = NULL;
> + ipr_cmd->qc = NULL;
> ipr_cmd->sense_buffer[0] = 0;
> ipr_cmd->dma_use_sg = 0;
> }
> @@ -626,6 +633,28 @@ static int ipr_set_pcix_cmd_reg(struct i
> }
>
> /**
> + * ipr_sata_eh_done - done function for aborted SATA commands
> + * @ipr_cmd: ipr command struct
> + *
> + * This function is invoked for ops generated to SATA
> + * devices which are being aborted.
> + *
> + * Return value:
> + * none
> + **/
> +static void ipr_sata_eh_done(struct ipr_cmnd *ipr_cmd)
> +{
> + struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
> + struct ata_queued_cmd *qc = ipr_cmd->qc;
> + struct ipr_sata_port *sata_port = qc->ap->private_data;
> +
> + qc->err_mask |= AC_ERR_OTHER;
> + sata_port->ioasa.status |= ATA_BUSY;
> + list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
> + ata_qc_complete(qc);
> +}
> +
> +/**
> * ipr_scsi_eh_done - mid-layer done function for aborted ops
> * @ipr_cmd: ipr command struct
> *
> @@ -669,6 +698,8 @@ static void ipr_fail_all_ops(struct ipr_
>
> if (ipr_cmd->scsi_cmd)
> ipr_cmd->done = ipr_scsi_eh_done;
> + else if (ipr_cmd->qc)
> + ipr_cmd->done = ipr_sata_eh_done;
>
> ipr_trc_hook(ipr_cmd, IPR_TRACE_FINISH, IPR_IOASC_IOA_WAS_RESET);
> del_timer(&ipr_cmd->timer);
> @@ -825,6 +856,7 @@ static void ipr_init_res_entry(struct ip
> res->del_from_ml = 0;
> res->resetting_device = 0;
> res->sdev = NULL;
> + res->sata_port = NULL;
> }
>
> /**
> @@ -3051,6 +3083,17 @@ static int ipr_free_dump(struct ipr_ioa_
> **/
> static int ipr_change_queue_depth(struct scsi_device *sdev, int qdepth)
> {
> + struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)sdev->host->hostdata;
> + struct ipr_resource_entry *res;
> + unsigned long lock_flags = 0;
> +
> + spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
> + res = (struct ipr_resource_entry *)sdev->hostdata;
> +
> + if (res && ipr_is_gata(res) && qdepth > IPR_MAX_CMD_PER_ATA_LUN)
> + qdepth = IPR_MAX_CMD_PER_ATA_LUN;
> + spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
> +
> scsi_adjust_queue_depth(sdev, scsi_get_tag_type(sdev), qdepth);
> return sdev->queue_depth;
> }
> @@ -3166,6 +3209,122 @@ static int ipr_biosparam(struct scsi_dev
> }
>
> /**
> + * ipr_find_starget - Find target based on bus/target.
> + * @starget: scsi target struct
> + *
> + * Return value:
> + * resource entry pointer if found / NULL if not found
> + **/
> +static struct ipr_resource_entry *ipr_find_starget(struct scsi_target *starget)
> +{
> + struct Scsi_Host *shost = dev_to_shost(&starget->dev);
> + struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) shost->hostdata;
> + struct ipr_resource_entry *res;
> +
> + list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
> + if ((res->cfgte.res_addr.bus == starget->channel) &&
> + (res->cfgte.res_addr.target == starget->id) &&
> + (res->cfgte.res_addr.lun == 0)) {
> + return res;
> + }
> + }
> +
> + return NULL;
> +}
> +
> +static struct ata_port_info sata_port_info;
> +
> +/**
> + * ipr_target_alloc - Prepare for commands to a SCSI target
> + * @starget: scsi target struct
> + *
> + * If the device is a SATA device, this function allocates an
> + * ATA port with libata, else it does nothing.
> + *
> + * Return value:
> + * 0 on success / non-0 on failure
> + **/
> +static int ipr_target_alloc(struct scsi_target *starget)
> +{
> + struct Scsi_Host *shost = dev_to_shost(&starget->dev);
> + struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) shost->hostdata;
> + struct ipr_sata_port *sata_port;
> + struct ata_port *ap;
> + struct ipr_resource_entry *res;
> + unsigned long lock_flags;
> +
> + spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
> + res = ipr_find_starget(starget);
> + starget->hostdata = NULL;
> +
> + if (res && ipr_is_gata(res)) {
> + spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
> + sata_port = kzalloc(sizeof(*sata_port), GFP_KERNEL);
> + if (!sata_port)
> + return -ENOMEM;
> +
> + ap = ata_sas_port_alloc(&ioa_cfg->ata_host_set, &sata_port_info, shost);
> + if (ap) {
> + spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
> + sata_port->ioa_cfg = ioa_cfg;
> + sata_port->ap = ap;
> + sata_port->res = res;
> +
> + res->sata_port = sata_port;
> + ap->private_data = sata_port;
> + starget->hostdata = sata_port;
> + } else {
> + kfree(sata_port);
> + return -ENOMEM;
> + }
> + }
> + spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
> +
> + return 0;
> +}
> +
> +/**
> + * ipr_target_destroy - Destroy a SCSI target
> + * @starget: scsi target struct
> + *
> + * If the device was a SATA device, this function frees the libata
> + * ATA port, else it does nothing.
> + *
> + **/
> +static void ipr_target_destroy(struct scsi_target *starget)
> +{
> + struct ipr_sata_port *sata_port = starget->hostdata;
> +
> + if (sata_port) {
> + starget->hostdata = NULL;
> + ata_sas_port_destroy(sata_port->ap);
> + kfree(sata_port);
> + }
> +}
> +
> +/**
> + * ipr_find_sdev - Find device based on bus/target/lun.
> + * @sdev: scsi device struct
> + *
> + * Return value:
> + * resource entry pointer if found / NULL if not found
> + **/
> +static struct ipr_resource_entry *ipr_find_sdev(struct scsi_device *sdev)
> +{
> + struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) sdev->host->hostdata;
> + struct ipr_resource_entry *res;
> +
> + list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
> + if ((res->cfgte.res_addr.bus == sdev->channel) &&
> + (res->cfgte.res_addr.target == sdev->id) &&
> + (res->cfgte.res_addr.lun == sdev->lun))
> + return res;
> + }
> +
> + return NULL;
> +}
> +
> +/**
> * ipr_slave_destroy - Unconfigure a SCSI device
> * @sdev: scsi device struct
> *
> @@ -3183,8 +3342,11 @@ static void ipr_slave_destroy(struct scs
> spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
> res = (struct ipr_resource_entry *) sdev->hostdata;
> if (res) {
> + if (res->sata_port)
> + ata_port_disable(res->sata_port->ap);
> sdev->hostdata = NULL;
> res->sdev = NULL;
> + res->sata_port = NULL;
> }
> spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
> }
> @@ -3219,13 +3381,45 @@ static int ipr_slave_configure(struct sc
> }
> if (ipr_is_vset_device(res) || ipr_is_scsi_disk(res))
> sdev->allow_restart = 1;
> - scsi_adjust_queue_depth(sdev, 0, sdev->host->cmd_per_lun);
> + if (ipr_is_gata(res) && res->sata_port) {
> + scsi_adjust_queue_depth(sdev, 0, IPR_MAX_CMD_PER_ATA_LUN);
> + ata_sas_slave_configure(sdev, res->sata_port->ap);
> + } else {
> + scsi_adjust_queue_depth(sdev, 0, sdev->host->cmd_per_lun);
> + }
> }
> spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
> return 0;
> }
>
> /**
> + * ipr_ata_slave_alloc - Prepare for commands to a SATA device
> + * @sdev: scsi device struct
> + *
> + * This function initializes an ATA port so that future commands
> + * sent through queuecommand will work.
> + *
> + * Return value:
> + * 0 on success
> + **/
> +static int ipr_ata_slave_alloc(struct scsi_device *sdev)
> +{
> + struct ipr_sata_port *sata_port = NULL;
> + int rc = -ENXIO;
> +
> + ENTER;
> + if (sdev->sdev_target)
> + sata_port = sdev->sdev_target->hostdata;
> + if (sata_port)
> + rc = ata_sas_port_init(sata_port->ap);
> + if (rc)
> + ipr_slave_destroy(sdev);
> +
> + LEAVE;
> + return rc;
> +}
> +
> +/**
> * ipr_slave_alloc - Prepare for commands to a device.
> * @sdev: scsi device struct
> *
> @@ -3248,18 +3442,18 @@ static int ipr_slave_alloc(struct scsi_d
>
> spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
>
> - list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
> - if ((res->cfgte.res_addr.bus == sdev->channel) &&
> - (res->cfgte.res_addr.target == sdev->id) &&
> - (res->cfgte.res_addr.lun == sdev->lun)) {
> - res->sdev = sdev;
> - res->add_to_ml = 0;
> - res->in_erp = 0;
> - sdev->hostdata = res;
> - if (!ipr_is_naca_model(res))
> - res->needs_sync_complete = 1;
> - rc = 0;
> - break;
> + res = ipr_find_sdev(sdev);
> + if (res) {
> + res->sdev = sdev;
> + res->add_to_ml = 0;
> + res->in_erp = 0;
> + sdev->hostdata = res;
> + if (!ipr_is_naca_model(res))
> + res->needs_sync_complete = 1;
> + rc = 0;
> + if (ipr_is_gata(res)) {
> + spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
> + return ipr_ata_slave_alloc(sdev);
> }
> }
>
> @@ -3314,7 +3508,8 @@ static int ipr_eh_host_reset(struct scsi
> * This function issues a device reset to the affected device.
> * If the device is a SCSI device, a LUN reset will be sent
> * to the device first. If that does not work, a target reset
> - * will be sent.
> + * will be sent. If the device is a SATA device, a PHY reset will
> + * be sent.
> *
> * Return value:
> * 0 on success / non-zero on failure
> @@ -3325,26 +3520,79 @@ static int ipr_device_reset(struct ipr_i
> struct ipr_cmnd *ipr_cmd;
> struct ipr_ioarcb *ioarcb;
> struct ipr_cmd_pkt *cmd_pkt;
> + struct ipr_ioarcb_ata_regs *regs;
> u32 ioasc;
>
> ENTER;
> ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
> ioarcb = &ipr_cmd->ioarcb;
> cmd_pkt = &ioarcb->cmd_pkt;
> + regs = &ioarcb->add_data.u.regs;
>
> ioarcb->res_handle = res->cfgte.res_handle;
> cmd_pkt->request_type = IPR_RQTYPE_IOACMD;
> cmd_pkt->cdb[0] = IPR_RESET_DEVICE;
> + if (ipr_is_gata(res)) {
> + cmd_pkt->cdb[2] = IPR_ATA_PHY_RESET;
> + ioarcb->add_cmd_parms_len = cpu_to_be32(sizeof(regs->flags));
> + regs->flags |= IPR_ATA_FLAG_STATUS_ON_GOOD_COMPLETION;
> + }
>
> ipr_send_blocking_cmd(ipr_cmd, ipr_timeout, IPR_DEVICE_RESET_TIMEOUT);
> ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
> list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
> + if (ipr_is_gata(res) && res->sata_port && ioasc != IPR_IOASC_IOA_WAS_RESET)
> + memcpy(&res->sata_port->ioasa, &ipr_cmd->ioasa.u.gata,
> + sizeof(struct ipr_ioasa_gata));
>
> LEAVE;
> return (IPR_IOASC_SENSE_KEY(ioasc) ? -EIO : 0);
> }
>
> /**
> + * ipr_sata_reset - Reset the SATA port
> + * @ap: SATA port to reset
> + * @classes: class of the attached device
> + *
> + * This function issues a SATA phy reset to the affected ATA port.
> + *
> + * Return value:
> + * 0 on success / non-zero on failure
> + **/
> +static int ipr_sata_reset(struct ata_port *ap, unsigned int *classes)
> +{
> + struct ipr_sata_port *sata_port = ap->private_data;
> + struct ipr_ioa_cfg *ioa_cfg = sata_port->ioa_cfg;
> + struct ipr_resource_entry *res;
> + unsigned long lock_flags = 0;
> + int rc = -ENXIO;
> +
> + ENTER;
> + spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
> + res = sata_port->res;
> + if (res) {
> + rc = ipr_device_reset(ioa_cfg, res);
> + switch(res->cfgte.proto) {
> + case IPR_PROTO_SATA:
> + case IPR_PROTO_SAS_STP:
> + *classes = ATA_DEV_ATA;
> + break;
> + case IPR_PROTO_SATA_ATAPI:
> + case IPR_PROTO_SAS_STP_ATAPI:
> + *classes = ATA_DEV_ATAPI;
> + break;
> + default:
> + *classes = ATA_DEV_UNKNOWN;
> + break;
> + };
> + }
> +
> + spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
> + LEAVE;
> + return rc;
> +}
> +
> +/**
> * ipr_eh_dev_reset - Reset the device
> * @scsi_cmd: scsi command struct
> *
> @@ -3360,7 +3608,8 @@ static int __ipr_eh_dev_reset(struct scs
> struct ipr_cmnd *ipr_cmd;
> struct ipr_ioa_cfg *ioa_cfg;
> struct ipr_resource_entry *res;
> - int rc;
> + struct ata_port *ap;
> + int rc = 0;
>
> ENTER;
> ioa_cfg = (struct ipr_ioa_cfg *) scsi_cmd->device->host->hostdata;
> @@ -3388,7 +3637,14 @@ static int __ipr_eh_dev_reset(struct scs
>
> res->resetting_device = 1;
> scmd_printk(KERN_ERR, scsi_cmd, "Resetting device\n");
> - rc = ipr_device_reset(ioa_cfg, res);
> +
> + if (ipr_is_gata(res) && res->sata_port) {
> + ap = res->sata_port->ap;
> + spin_unlock_irq(scsi_cmd->device->host->host_lock);
> + ata_do_eh(ap, NULL, NULL, ipr_sata_reset, NULL);
> + spin_lock_irq(scsi_cmd->device->host->host_lock);
> + } else
> + rc = ipr_device_reset(ioa_cfg, res);
> res->resetting_device = 0;
>
> LEAVE;
> @@ -4300,6 +4556,9 @@ static int ipr_queuecommand(struct scsi_
> return 0;
> }
>
> + if (ipr_is_gata(res) && res->sata_port)
> + return ata_sas_queuecmd(scsi_cmd, done, res->sata_port->ap);
> +
> ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
> ioarcb = &ipr_cmd->ioarcb;
> list_add_tail(&ipr_cmd->queue, &ioa_cfg->pending_q);
> @@ -4345,6 +4604,26 @@ static int ipr_queuecommand(struct scsi_
> }
>
> /**
> + * ipr_ioctl - IOCTL handler
> + * @sdev: scsi device struct
> + * @cmd: IOCTL cmd
> + * @arg: IOCTL arg
> + *
> + * Return value:
> + * 0 on success / other on failure
> + **/
> +int ipr_ioctl(struct scsi_device *sdev, int cmd, void __user *arg)
> +{
> + struct ipr_resource_entry *res;
> +
> + res = (struct ipr_resource_entry *)sdev->hostdata;
> + if (res && ipr_is_gata(res))
> + return ata_scsi_ioctl(sdev, cmd, arg);
> +
> + return -EINVAL;
> +}
> +
> +/**
> * ipr_info - Get information about the card/driver
> * @scsi_host: scsi host struct
> *
> @@ -4366,10 +4645,45 @@ static const char * ipr_ioa_info(struct
> return buffer;
> }
>
> +/**
> + * ipr_scsi_timed_out - Handle scsi command timeout
> + * @scsi_cmd: scsi command struct
> + *
> + * Return value:
> + * EH_NOT_HANDLED
> + **/
> +enum scsi_eh_timer_return ipr_scsi_timed_out(struct scsi_cmnd *scsi_cmd)
> +{
> + struct ipr_ioa_cfg *ioa_cfg;
> + struct ipr_cmnd *ipr_cmd;
> + unsigned long flags;
> +
> + ENTER;
> + spin_lock_irqsave(scsi_cmd->device->host->host_lock, flags);
> + ioa_cfg = (struct ipr_ioa_cfg *)scsi_cmd->device->host->hostdata;
> +
> + list_for_each_entry(ipr_cmd, &ioa_cfg->pending_q, queue) {
> + if (ipr_cmd->qc && ipr_cmd->qc->scsicmd == scsi_cmd) {
> + ipr_cmd->qc->err_mask |= AC_ERR_TIMEOUT;
> + ipr_cmd->qc->flags |= ATA_QCFLAG_FAILED;
> + break;
> + }
> + }
> +
> + spin_unlock_irqrestore(scsi_cmd->device->host->host_lock, flags);
> + LEAVE;
> + return EH_NOT_HANDLED;
> +}
> +
> +static struct scsi_transport_template ipr_transport_template = {
> + .eh_timed_out = ipr_scsi_timed_out
> +};
> +
> static struct scsi_host_template driver_template = {
> .module = THIS_MODULE,
> .name = "IPR",
> .info = ipr_ioa_info,
> + .ioctl = ipr_ioctl,
> .queuecommand = ipr_queuecommand,
> .eh_abort_handler = ipr_eh_abort,
> .eh_device_reset_handler = ipr_eh_dev_reset,
> @@ -4377,6 +4691,8 @@ static struct scsi_host_template driver_
> .slave_alloc = ipr_slave_alloc,
> .slave_configure = ipr_slave_configure,
> .slave_destroy = ipr_slave_destroy,
> + .target_alloc = ipr_target_alloc,
> + .target_destroy = ipr_target_destroy,
> .change_queue_depth = ipr_change_queue_depth,
> .change_queue_type = ipr_change_queue_type,
> .bios_param = ipr_biosparam,
> @@ -4391,6 +4707,329 @@ static struct scsi_host_template driver_
> .proc_name = IPR_NAME
> };
>
> +/**
> + * ipr_ata_phy_reset - libata phy_reset handler
> + * @ap: ata port to reset
> + *
> + **/
> +static void ipr_ata_phy_reset(struct ata_port *ap)
> +{
> + unsigned long flags;
> + struct ipr_sata_port *sata_port = ap->private_data;
> + struct ipr_resource_entry *res = sata_port->res;
> + struct ipr_ioa_cfg *ioa_cfg = sata_port->ioa_cfg;
> + int rc;
> +
> + ENTER;
> + spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
> + while(ioa_cfg->in_reset_reload) {
> + spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
> + wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
> + spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
> + }
> +
> + if (!ioa_cfg->allow_cmds)
> + goto out_unlock;
> +
> + rc = ipr_device_reset(ioa_cfg, res);
> +
> + if (rc) {
> + ap->ops->port_disable(ap);
> + goto out_unlock;
> + }
> +
> + switch(res->cfgte.proto) {
> + case IPR_PROTO_SATA:
> + case IPR_PROTO_SAS_STP:
> + ap->device[0].class = ATA_DEV_ATA;
> + break;
> + case IPR_PROTO_SATA_ATAPI:
> + case IPR_PROTO_SAS_STP_ATAPI:
> + ap->device[0].class = ATA_DEV_ATAPI;
> + break;
> + default:
> + ap->device[0].class = ATA_DEV_UNKNOWN;
> + ap->ops->port_disable(ap);
> + break;
> + };
> +
> +out_unlock:
> + spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
> + LEAVE;
> +}
> +
> +/**
> + * ipr_ata_post_internal - Cleanup after an internal command
> + * @qc: ATA queued command
> + *
> + * Return value:
> + * none
> + **/
> +static void ipr_ata_post_internal(struct ata_queued_cmd *qc)
> +{
> + struct ipr_sata_port *sata_port = qc->ap->private_data;
> + struct ipr_ioa_cfg *ioa_cfg = sata_port->ioa_cfg;
> + struct ipr_cmnd *ipr_cmd;
> + unsigned long flags;
> +
> + spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
> + list_for_each_entry(ipr_cmd, &ioa_cfg->pending_q, queue) {
> + if (ipr_cmd->qc == qc) {
> + ipr_device_reset(ioa_cfg, sata_port->res);
> + break;
> + }
> + }
> + spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
> +}
> +
> +/**
> + * ipr_tf_read - Read the current ATA taskfile for the ATA port
> + * @ap: ATA port
> + * @tf: destination ATA taskfile
> + *
> + * Return value:
> + * none
> + **/
> +static void ipr_tf_read(struct ata_port *ap, struct ata_taskfile *tf)
> +{
> + struct ipr_sata_port *sata_port = ap->private_data;
> + struct ipr_ioasa_gata *g = &sata_port->ioasa;
> +
> + tf->feature = g->error;
> + tf->nsect = g->nsect;
> + tf->lbal = g->lbal;
> + tf->lbam = g->lbam;
> + tf->lbah = g->lbah;
> + tf->device = g->device;
> + tf->command = g->status;
> + tf->hob_nsect = g->hob_nsect;
> + tf->hob_lbal = g->hob_lbal;
> + tf->hob_lbam = g->hob_lbam;
> + tf->hob_lbah = g->hob_lbah;
> + tf->ctl = g->alt_status;
> +}
> +
> +/**
> + * ipr_copy_sata_tf - Copy a SATA taskfile to an IOA data structure
> + * @regs: destination
> + * @tf: source ATA taskfile
> + *
> + * Return value:
> + * none
> + **/
> +static void ipr_copy_sata_tf(struct ipr_ioarcb_ata_regs *regs,
> + struct ata_taskfile *tf)
> +{
> + regs->feature = tf->feature;
> + regs->nsect = tf->nsect;
> + regs->lbal = tf->lbal;
> + regs->lbam = tf->lbam;
> + regs->lbah = tf->lbah;
> + regs->device = tf->device;
> + regs->command = tf->command;
> + regs->hob_feature = tf->hob_feature;
> + regs->hob_nsect = tf->hob_nsect;
> + regs->hob_lbal = tf->hob_lbal;
> + regs->hob_lbam = tf->hob_lbam;
> + regs->hob_lbah = tf->hob_lbah;
> + regs->ctl = tf->ctl;
> +}
> +
> +/**
> + * ipr_sata_done - done function for SATA commands
> + * @ipr_cmd: ipr command struct
> + *
> + * This function is invoked by the interrupt handler for
> + * ops generated by the SCSI mid-layer to SATA devices
> + *
> + * Return value:
> + * none
> + **/
> +static void ipr_sata_done(struct ipr_cmnd *ipr_cmd)
> +{
> + struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
> + struct ata_queued_cmd *qc = ipr_cmd->qc;
> + struct ipr_sata_port *sata_port = qc->ap->private_data;
> + struct ipr_resource_entry *res = sata_port->res;
> +
> + memcpy(&sata_port->ioasa, &ipr_cmd->ioasa.u.gata,
> + sizeof(struct ipr_ioasa_gata));
> + ipr_dump_ioasa(ioa_cfg, ipr_cmd, res);
> +
> + if (be32_to_cpu(ipr_cmd->ioasa.ioasc_specific) & IPR_ATA_DEVICE_WAS_RESET)
> + scsi_report_device_reset(ioa_cfg->host, res->cfgte.res_addr.bus,
> + res->cfgte.res_addr.target);
> +
> + if (IPR_IOASC_SENSE_KEY(be32_to_cpu(ipr_cmd->ioasa.ioasc)))
> + qc->err_mask |= __ac_err_mask(ipr_cmd->ioasa.u.gata.status);
> + else
> + qc->err_mask |= ac_err_mask(ipr_cmd->ioasa.u.gata.status);
> + list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
> + ata_qc_complete(qc);
> +}
> +
> +/**
> + * ipr_build_ata_ioadl - Build an ATA scatter/gather list
> + * @ipr_cmd: ipr command struct
> + * @qc: ATA queued command
> + *
> + **/
> +static void ipr_build_ata_ioadl(struct ipr_cmnd *ipr_cmd,
> + struct ata_queued_cmd *qc)
> +{
> + u32 ioadl_flags = 0;
> + struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
> + struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl;
> + int len = qc->nbytes + qc->pad_len;
> + struct scatterlist *sg;
> +
> + if (len == 0)
> + return;
> +
> + if (qc->dma_dir == DMA_TO_DEVICE) {
> + ioadl_flags = IPR_IOADL_FLAGS_WRITE;
> + ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
> + ioarcb->write_data_transfer_length = cpu_to_be32(len);
> + ioarcb->write_ioadl_len =
> + cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg);
> + } else if (qc->dma_dir == DMA_FROM_DEVICE) {
> + ioadl_flags = IPR_IOADL_FLAGS_READ;
> + ioarcb->read_data_transfer_length = cpu_to_be32(len);
> + ioarcb->read_ioadl_len =
> + cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg);
> + }
> +
> + ata_for_each_sg(sg, qc) {
> + ioadl->flags_and_data_len = cpu_to_be32(ioadl_flags | sg_dma_len(sg));
> + ioadl->address = cpu_to_be32(sg_dma_address(sg));
> + if (ata_sg_is_last(sg, qc))
> + ioadl->flags_and_data_len |= cpu_to_be32(IPR_IOADL_FLAGS_LAST);
> + else
> + ioadl++;
> + }
> +}
> +
> +/**
> + * ipr_qc_issue - Issue a SATA qc to a device
> + * @qc: queued command
> + *
> + * Return value:
> + * 0 if success
> + **/
> +static unsigned int ipr_qc_issue(struct ata_queued_cmd *qc)
> +{
> + struct ata_port *ap = qc->ap;
> + struct ipr_sata_port *sata_port = ap->private_data;
> + struct ipr_resource_entry *res = sata_port->res;
> + struct ipr_ioa_cfg *ioa_cfg = sata_port->ioa_cfg;
> + struct ipr_cmnd *ipr_cmd;
> + struct ipr_ioarcb *ioarcb;
> + struct ipr_ioarcb_ata_regs *regs;
> +
> + if (unlikely(!ioa_cfg->allow_cmds || ioa_cfg->ioa_is_dead))
> + return -EIO;
> +
> + ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
> + ioarcb = &ipr_cmd->ioarcb;
> + regs = &ioarcb->add_data.u.regs;
> +
> + memset(&ioarcb->add_data, 0, sizeof(ioarcb->add_data));
> + ioarcb->add_cmd_parms_len = cpu_to_be32(sizeof(ioarcb->add_data.u.regs));
> +
> + list_add_tail(&ipr_cmd->queue, &ioa_cfg->pending_q);
> + ipr_cmd->qc = qc;
> + ipr_cmd->done = ipr_sata_done;
> + ipr_cmd->ioarcb.res_handle = res->cfgte.res_handle;
> + ioarcb->cmd_pkt.request_type = IPR_RQTYPE_ATA_PASSTHRU;
> + ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_NO_LINK_DESC;
> + ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_NO_ULEN_CHK;
> + ipr_cmd->dma_use_sg = qc->pad_len ? qc->n_elem + 1 : qc->n_elem;
> +
> + ipr_build_ata_ioadl(ipr_cmd, qc);
> + regs->flags |= IPR_ATA_FLAG_STATUS_ON_GOOD_COMPLETION;
> + ipr_copy_sata_tf(regs, &qc->tf);
> + memcpy(ioarcb->cmd_pkt.cdb, qc->cdb, IPR_MAX_CDB_LEN);
> + ipr_trc_hook(ipr_cmd, IPR_TRACE_START, IPR_GET_PHYS_LOC(res->cfgte.res_addr));
> +
> + switch (qc->tf.protocol) {
> + case ATA_PROT_NODATA:
> + case ATA_PROT_PIO:
> + break;
> +
> + case ATA_PROT_DMA:
> + regs->flags |= IPR_ATA_FLAG_XFER_TYPE_DMA;
> + break;
> +
> + case ATA_PROT_ATAPI:
> + case ATA_PROT_ATAPI_NODATA:
> + regs->flags |= IPR_ATA_FLAG_PACKET_CMD;
> + break;
> +
> + case ATA_PROT_ATAPI_DMA:
> + regs->flags |= IPR_ATA_FLAG_PACKET_CMD;
> + regs->flags |= IPR_ATA_FLAG_XFER_TYPE_DMA;
> + break;
> +
> + default:
> + WARN_ON(1);
> + return -1;
> + }
> +
> + mb();
> + writel(be32_to_cpu(ioarcb->ioarcb_host_pci_addr),
> + ioa_cfg->regs.ioarrin_reg);
> + return 0;
> +}
> +
> +/**
> + * ipr_ata_check_status - Return last ATA status
> + * @ap: ATA port
> + *
> + * Return value:
> + * ATA status
> + **/
> +static u8 ipr_ata_check_status(struct ata_port *ap)
> +{
> + struct ipr_sata_port *sata_port = ap->private_data;
> + return sata_port->ioasa.status;
> +}
> +
> +/**
> + * ipr_ata_check_altstatus - Return last ATA altstatus
> + * @ap: ATA port
> + *
> + * Return value:
> + * Alt ATA status
> + **/
> +static u8 ipr_ata_check_altstatus(struct ata_port *ap)
> +{
> + struct ipr_sata_port *sata_port = ap->private_data;
> + return sata_port->ioasa.alt_status;
> +}
> +
> +static struct ata_port_operations ipr_sata_ops = {
> + .port_disable = ata_port_disable,
> + .check_status = ipr_ata_check_status,
> + .check_altstatus = ipr_ata_check_altstatus,
> + .dev_select = ata_noop_dev_select,
> + .phy_reset = ipr_ata_phy_reset,
> + .post_internal_cmd = ipr_ata_post_internal,
> + .tf_read = ipr_tf_read,
> + .qc_prep = ata_noop_qc_prep,
> + .qc_issue = ipr_qc_issue,
> + .port_start = ata_sas_port_start,
> + .port_stop = ata_sas_port_stop
> +};
> +
> +static struct ata_port_info sata_port_info = {
> + .host_flags = ATA_FLAG_SATA | ATA_FLAG_NO_LEGACY | ATA_FLAG_SATA_RESET |
> + ATA_FLAG_MMIO | ATA_FLAG_PIO_DMA,
> + .pio_mask = 0x10, /* pio4 */
> + .mwdma_mask = 0x07,
> + .udma_mask = 0x7f, /* udma0-6 */
> + .port_ops = &ipr_sata_ops
> +};
> +
> #ifdef CONFIG_PPC_PSERIES
> static const u16 ipr_blocked_processors[] = {
> PV_NORTHSTAR,
> @@ -6374,6 +7013,9 @@ static int __devinit ipr_probe_ioa(struc
>
> ioa_cfg = (struct ipr_ioa_cfg *)host->hostdata;
> memset(ioa_cfg, 0, sizeof(struct ipr_ioa_cfg));
> + host->transportt = &ipr_transport_template;
> + ata_host_set_init(&ioa_cfg->ata_host_set, &pdev->dev,
> + sata_port_info.host_flags, &ipr_sata_ops);
>
> ioa_cfg->chip_cfg = ipr_get_chip_cfg(dev_id);
>
> diff -puN drivers/scsi/Kconfig~ipr_sata_with_libata_changes drivers/scsi/Kconfig
> --- libata-dev/drivers/scsi/Kconfig~ipr_sata_with_libata_changes 2006-08-07 12:44:09.000000000 -0500
> +++ libata-dev-bjking1/drivers/scsi/Kconfig 2006-08-07 12:44:09.000000000 -0500
> @@ -1124,6 +1124,7 @@ config SCSI_IPR
> tristate "IBM Power Linux RAID adapter support"
> depends on PCI && SCSI
> select FW_LOADER
> + select SCSI_SATA
> ---help---
> This driver supports the IBM Power Linux family RAID adapters.
> This includes IBM pSeries 5712, 5703, 5709, and 570A, as well
> diff -puN drivers/scsi/Makefile~ipr_sata_with_libata_changes drivers/scsi/Makefile
> --- libata-dev/drivers/scsi/Makefile~ipr_sata_with_libata_changes 2006-08-07 12:44:09.000000000 -0500
> +++ libata-dev-bjking1/drivers/scsi/Makefile 2006-08-07 12:44:09.000000000 -0500
> @@ -120,7 +120,7 @@ obj-$(CONFIG_SUN3X_ESP) += NCR53C9x.o s
> obj-$(CONFIG_SCSI_FCAL) += fcal.o
> obj-$(CONFIG_SCSI_LASI700) += 53c700.o lasi700.o
> obj-$(CONFIG_SCSI_NSP32) += nsp32.o
> -obj-$(CONFIG_SCSI_IPR) += ipr.o
> +obj-$(CONFIG_SCSI_IPR) += libata.o ipr.o
> obj-$(CONFIG_SCSI_IBMVSCSI) += ibmvscsi/
> obj-$(CONFIG_SCSI_SATA_AHCI) += libata.o ahci.o
> obj-$(CONFIG_SCSI_SATA_SVW) += libata.o sata_svw.o
> _
> -
> To unsubscribe from this list: send the line "unsubscribe linux-scsi" in
> the body of a message to majordomo@xxxxxxxxxxxxxxx
> More majordomo info at http://vger.kernel.org/majordomo-info.html
--
Brian King
eServer Storage I/O
IBM Linux Technology Center
-
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