[SCSI] libsas: make ATA functions selectable by a config option
Not everyone wants libsas automatically to pull in libata. This patch makes the behaviour configurable, so you can build libsas with or without ATA support. Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
This commit is contained in:
James Bottomley
James Bottomley
Родитель
41e1703b9b
Коммит
b91421749a
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@ -30,6 +30,13 @@ config SCSI_SAS_LIBSAS
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This provides transport specific helpers for SAS drivers which
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use the domain device construct (like the aic94xxx).
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config SCSI_SAS_ATA
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bool "ATA support for libsas (requires libata)"
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depends on SCSI_SAS_LIBSAS && ATA
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help
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Builds in ATA support into libsas. Will necessitate
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the loading of libata along with libsas.
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config SCSI_SAS_LIBSAS_DEBUG
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bool "Compile the SAS Domain Transport Attributes in debug mode"
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default y
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@ -33,5 +33,5 @@ libsas-y += sas_init.o \
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sas_dump.o \
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sas_discover.o \
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sas_expander.o \
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sas_scsi_host.o \
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sas_ata.o
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sas_scsi_host.o
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libsas-$(CONFIG_SCSI_SAS_ATA) += sas_ata.o
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@ -21,6 +21,8 @@
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* USA
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*/
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#include <linux/scatterlist.h>
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#include <scsi/sas_ata.h>
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#include "sas_internal.h"
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#include <scsi/scsi_host.h>
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@ -418,3 +420,398 @@ void sas_ata_task_abort(struct sas_task *task)
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waiting = qc->private_data;
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complete(waiting);
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}
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static void sas_task_timedout(unsigned long _task)
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{
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struct sas_task *task = (void *) _task;
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unsigned long flags;
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spin_lock_irqsave(&task->task_state_lock, flags);
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if (!(task->task_state_flags & SAS_TASK_STATE_DONE))
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task->task_state_flags |= SAS_TASK_STATE_ABORTED;
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spin_unlock_irqrestore(&task->task_state_lock, flags);
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complete(&task->completion);
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}
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static void sas_disc_task_done(struct sas_task *task)
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{
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if (!del_timer(&task->timer))
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return;
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complete(&task->completion);
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}
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#define SAS_DEV_TIMEOUT 10
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/**
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* sas_execute_task -- Basic task processing for discovery
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* @task: the task to be executed
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* @buffer: pointer to buffer to do I/O
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* @size: size of @buffer
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* @pci_dma_dir: PCI_DMA_...
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*/
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static int sas_execute_task(struct sas_task *task, void *buffer, int size,
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int pci_dma_dir)
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{
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int res = 0;
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struct scatterlist *scatter = NULL;
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struct task_status_struct *ts = &task->task_status;
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int num_scatter = 0;
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int retries = 0;
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struct sas_internal *i =
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to_sas_internal(task->dev->port->ha->core.shost->transportt);
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if (pci_dma_dir != PCI_DMA_NONE) {
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scatter = kzalloc(sizeof(*scatter), GFP_KERNEL);
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if (!scatter)
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goto out;
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sg_init_one(scatter, buffer, size);
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num_scatter = 1;
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}
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task->task_proto = task->dev->tproto;
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task->scatter = scatter;
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task->num_scatter = num_scatter;
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task->total_xfer_len = size;
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task->data_dir = pci_dma_dir;
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task->task_done = sas_disc_task_done;
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if (pci_dma_dir != PCI_DMA_NONE &&
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sas_protocol_ata(task->task_proto)) {
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task->num_scatter = pci_map_sg(task->dev->port->ha->pcidev,
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task->scatter,
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task->num_scatter,
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task->data_dir);
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}
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for (retries = 0; retries < 5; retries++) {
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task->task_state_flags = SAS_TASK_STATE_PENDING;
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init_completion(&task->completion);
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task->timer.data = (unsigned long) task;
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task->timer.function = sas_task_timedout;
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task->timer.expires = jiffies + SAS_DEV_TIMEOUT*HZ;
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add_timer(&task->timer);
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res = i->dft->lldd_execute_task(task, 1, GFP_KERNEL);
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if (res) {
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del_timer(&task->timer);
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SAS_DPRINTK("executing SAS discovery task failed:%d\n",
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res);
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goto ex_err;
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}
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wait_for_completion(&task->completion);
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res = -ETASK;
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if (task->task_state_flags & SAS_TASK_STATE_ABORTED) {
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int res2;
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SAS_DPRINTK("task aborted, flags:0x%x\n",
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task->task_state_flags);
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res2 = i->dft->lldd_abort_task(task);
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SAS_DPRINTK("came back from abort task\n");
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if (!(task->task_state_flags & SAS_TASK_STATE_DONE)) {
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if (res2 == TMF_RESP_FUNC_COMPLETE)
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continue; /* Retry the task */
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else
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goto ex_err;
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}
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}
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if (task->task_status.stat == SAM_BUSY ||
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task->task_status.stat == SAM_TASK_SET_FULL ||
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task->task_status.stat == SAS_QUEUE_FULL) {
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SAS_DPRINTK("task: q busy, sleeping...\n");
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schedule_timeout_interruptible(HZ);
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} else if (task->task_status.stat == SAM_CHECK_COND) {
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struct scsi_sense_hdr shdr;
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if (!scsi_normalize_sense(ts->buf, ts->buf_valid_size,
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&shdr)) {
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SAS_DPRINTK("couldn't normalize sense\n");
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continue;
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}
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if ((shdr.sense_key == 6 && shdr.asc == 0x29) ||
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(shdr.sense_key == 2 && shdr.asc == 4 &&
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shdr.ascq == 1)) {
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SAS_DPRINTK("device %016llx LUN: %016llx "
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"powering up or not ready yet, "
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"sleeping...\n",
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SAS_ADDR(task->dev->sas_addr),
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SAS_ADDR(task->ssp_task.LUN));
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schedule_timeout_interruptible(5*HZ);
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} else if (shdr.sense_key == 1) {
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res = 0;
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break;
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} else if (shdr.sense_key == 5) {
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break;
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} else {
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SAS_DPRINTK("dev %016llx LUN: %016llx "
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"sense key:0x%x ASC:0x%x ASCQ:0x%x"
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"\n",
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SAS_ADDR(task->dev->sas_addr),
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SAS_ADDR(task->ssp_task.LUN),
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shdr.sense_key,
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shdr.asc, shdr.ascq);
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}
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} else if (task->task_status.resp != SAS_TASK_COMPLETE ||
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task->task_status.stat != SAM_GOOD) {
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SAS_DPRINTK("task finished with resp:0x%x, "
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"stat:0x%x\n",
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task->task_status.resp,
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task->task_status.stat);
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goto ex_err;
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} else {
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res = 0;
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break;
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}
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}
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ex_err:
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if (pci_dma_dir != PCI_DMA_NONE) {
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if (sas_protocol_ata(task->task_proto))
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pci_unmap_sg(task->dev->port->ha->pcidev,
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task->scatter, task->num_scatter,
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task->data_dir);
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kfree(scatter);
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}
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out:
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return res;
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}
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/* ---------- SATA ---------- */
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static void sas_get_ata_command_set(struct domain_device *dev)
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{
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struct dev_to_host_fis *fis =
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(struct dev_to_host_fis *) dev->frame_rcvd;
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if ((fis->sector_count == 1 && /* ATA */
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fis->lbal == 1 &&
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fis->lbam == 0 &&
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fis->lbah == 0 &&
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fis->device == 0)
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||
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(fis->sector_count == 0 && /* CE-ATA (mATA) */
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fis->lbal == 0 &&
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fis->lbam == 0xCE &&
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fis->lbah == 0xAA &&
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(fis->device & ~0x10) == 0))
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dev->sata_dev.command_set = ATA_COMMAND_SET;
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else if ((fis->interrupt_reason == 1 && /* ATAPI */
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fis->lbal == 1 &&
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fis->byte_count_low == 0x14 &&
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fis->byte_count_high == 0xEB &&
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(fis->device & ~0x10) == 0))
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dev->sata_dev.command_set = ATAPI_COMMAND_SET;
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else if ((fis->sector_count == 1 && /* SEMB */
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fis->lbal == 1 &&
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fis->lbam == 0x3C &&
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fis->lbah == 0xC3 &&
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fis->device == 0)
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||
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(fis->interrupt_reason == 1 && /* SATA PM */
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fis->lbal == 1 &&
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fis->byte_count_low == 0x69 &&
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fis->byte_count_high == 0x96 &&
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(fis->device & ~0x10) == 0))
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/* Treat it as a superset? */
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dev->sata_dev.command_set = ATAPI_COMMAND_SET;
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}
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/**
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* sas_issue_ata_cmd -- Basic SATA command processing for discovery
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* @dev: the device to send the command to
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* @command: the command register
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* @features: the features register
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* @buffer: pointer to buffer to do I/O
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* @size: size of @buffer
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* @pci_dma_dir: PCI_DMA_...
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*/
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static int sas_issue_ata_cmd(struct domain_device *dev, u8 command,
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u8 features, void *buffer, int size,
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int pci_dma_dir)
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{
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int res = 0;
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struct sas_task *task;
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struct dev_to_host_fis *d2h_fis = (struct dev_to_host_fis *)
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&dev->frame_rcvd[0];
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res = -ENOMEM;
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task = sas_alloc_task(GFP_KERNEL);
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if (!task)
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goto out;
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task->dev = dev;
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task->ata_task.fis.fis_type = 0x27;
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task->ata_task.fis.command = command;
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task->ata_task.fis.features = features;
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task->ata_task.fis.device = d2h_fis->device;
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task->ata_task.retry_count = 1;
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res = sas_execute_task(task, buffer, size, pci_dma_dir);
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sas_free_task(task);
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out:
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return res;
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}
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static void sas_sata_propagate_sas_addr(struct domain_device *dev)
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{
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unsigned long flags;
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struct asd_sas_port *port = dev->port;
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struct asd_sas_phy *phy;
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BUG_ON(dev->parent);
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memcpy(port->attached_sas_addr, dev->sas_addr, SAS_ADDR_SIZE);
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spin_lock_irqsave(&port->phy_list_lock, flags);
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list_for_each_entry(phy, &port->phy_list, port_phy_el)
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memcpy(phy->attached_sas_addr, dev->sas_addr, SAS_ADDR_SIZE);
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spin_unlock_irqrestore(&port->phy_list_lock, flags);
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}
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#define ATA_IDENTIFY_DEV 0xEC
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#define ATA_IDENTIFY_PACKET_DEV 0xA1
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#define ATA_SET_FEATURES 0xEF
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#define ATA_FEATURE_PUP_STBY_SPIN_UP 0x07
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/**
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* sas_discover_sata_dev -- discover a STP/SATA device (SATA_DEV)
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* @dev: STP/SATA device of interest (ATA/ATAPI)
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*
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* The LLDD has already been notified of this device, so that we can
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* send FISes to it. Here we try to get IDENTIFY DEVICE or IDENTIFY
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* PACKET DEVICE, if ATAPI device, so that the LLDD can fine-tune its
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* performance for this device.
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*/
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static int sas_discover_sata_dev(struct domain_device *dev)
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{
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int res;
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__le16 *identify_x;
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u8 command;
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identify_x = kzalloc(512, GFP_KERNEL);
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if (!identify_x)
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return -ENOMEM;
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if (dev->sata_dev.command_set == ATA_COMMAND_SET) {
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dev->sata_dev.identify_device = identify_x;
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command = ATA_IDENTIFY_DEV;
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} else {
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dev->sata_dev.identify_packet_device = identify_x;
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command = ATA_IDENTIFY_PACKET_DEV;
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}
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res = sas_issue_ata_cmd(dev, command, 0, identify_x, 512,
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PCI_DMA_FROMDEVICE);
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if (res)
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goto out_err;
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/* lives on the media? */
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if (le16_to_cpu(identify_x[0]) & 4) {
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/* incomplete response */
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SAS_DPRINTK("sending SET FEATURE/PUP_STBY_SPIN_UP to "
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"dev %llx\n", SAS_ADDR(dev->sas_addr));
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if (!le16_to_cpu(identify_x[83] & (1<<6)))
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goto cont1;
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res = sas_issue_ata_cmd(dev, ATA_SET_FEATURES,
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ATA_FEATURE_PUP_STBY_SPIN_UP,
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NULL, 0, PCI_DMA_NONE);
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if (res)
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goto cont1;
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schedule_timeout_interruptible(5*HZ); /* More time? */
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res = sas_issue_ata_cmd(dev, command, 0, identify_x, 512,
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PCI_DMA_FROMDEVICE);
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if (res)
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goto out_err;
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}
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cont1:
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/* Get WWN */
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if (dev->port->oob_mode != SATA_OOB_MODE) {
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memcpy(dev->sas_addr, dev->sata_dev.rps_resp.rps.stp_sas_addr,
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SAS_ADDR_SIZE);
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} else if (dev->sata_dev.command_set == ATA_COMMAND_SET &&
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(le16_to_cpu(dev->sata_dev.identify_device[108]) & 0xF000)
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== 0x5000) {
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int i;
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for (i = 0; i < 4; i++) {
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dev->sas_addr[2*i] =
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(le16_to_cpu(dev->sata_dev.identify_device[108+i]) & 0xFF00) >> 8;
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dev->sas_addr[2*i+1] =
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le16_to_cpu(dev->sata_dev.identify_device[108+i]) & 0x00FF;
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}
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}
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sas_hash_addr(dev->hashed_sas_addr, dev->sas_addr);
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if (!dev->parent)
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sas_sata_propagate_sas_addr(dev);
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/* XXX Hint: register this SATA device with SATL.
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When this returns, dev->sata_dev->lu is alive and
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present.
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sas_satl_register_dev(dev);
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*/
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sas_fill_in_rphy(dev, dev->rphy);
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return 0;
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out_err:
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dev->sata_dev.identify_packet_device = NULL;
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dev->sata_dev.identify_device = NULL;
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kfree(identify_x);
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return res;
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||||
}
|
||||
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static int sas_discover_sata_pm(struct domain_device *dev)
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{
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return -ENODEV;
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}
|
||||
|
||||
/**
|
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* sas_discover_sata -- discover an STP/SATA domain device
|
||||
* @dev: pointer to struct domain_device of interest
|
||||
*
|
||||
* First we notify the LLDD of this device, so we can send frames to
|
||||
* it. Then depending on the type of device we call the appropriate
|
||||
* discover functions. Once device discover is done, we notify the
|
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* LLDD so that it can fine-tune its parameters for the device, by
|
||||
* removing it and then adding it. That is, the second time around,
|
||||
* the driver would have certain fields, that it is looking at, set.
|
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* Finally we initialize the kobj so that the device can be added to
|
||||
* the system at registration time. Devices directly attached to a HA
|
||||
* port, have no parents. All other devices do, and should have their
|
||||
* "parent" pointer set appropriately before calling this function.
|
||||
*/
|
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int sas_discover_sata(struct domain_device *dev)
|
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{
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||||
int res;
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||||
|
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sas_get_ata_command_set(dev);
|
||||
|
||||
res = sas_notify_lldd_dev_found(dev);
|
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if (res)
|
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return res;
|
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|
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switch (dev->dev_type) {
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case SATA_DEV:
|
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res = sas_discover_sata_dev(dev);
|
||||
break;
|
||||
case SATA_PM:
|
||||
res = sas_discover_sata_pm(dev);
|
||||
break;
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||||
default:
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break;
|
||||
}
|
||||
sas_notify_lldd_dev_gone(dev);
|
||||
if (!res) {
|
||||
sas_notify_lldd_dev_found(dev);
|
||||
res = sas_rphy_add(dev->rphy);
|
||||
}
|
||||
|
||||
return res;
|
||||
}
|
||||
|
|
|
|||
|
|
@ -55,161 +55,6 @@ void sas_init_dev(struct domain_device *dev)
|
|||
}
|
||||
}
|
||||
|
||||
static void sas_task_timedout(unsigned long _task)
|
||||
{
|
||||
struct sas_task *task = (void *) _task;
|
||||
unsigned long flags;
|
||||
|
||||
spin_lock_irqsave(&task->task_state_lock, flags);
|
||||
if (!(task->task_state_flags & SAS_TASK_STATE_DONE))
|
||||
task->task_state_flags |= SAS_TASK_STATE_ABORTED;
|
||||
spin_unlock_irqrestore(&task->task_state_lock, flags);
|
||||
|
||||
complete(&task->completion);
|
||||
}
|
||||
|
||||
static void sas_disc_task_done(struct sas_task *task)
|
||||
{
|
||||
if (!del_timer(&task->timer))
|
||||
return;
|
||||
complete(&task->completion);
|
||||
}
|
||||
|
||||
#define SAS_DEV_TIMEOUT 10
|
||||
|
||||
/**
|
||||
* sas_execute_task -- Basic task processing for discovery
|
||||
* @task: the task to be executed
|
||||
* @buffer: pointer to buffer to do I/O
|
||||
* @size: size of @buffer
|
||||
* @pci_dma_dir: PCI_DMA_...
|
||||
*/
|
||||
static int sas_execute_task(struct sas_task *task, void *buffer, int size,
|
||||
int pci_dma_dir)
|
||||
{
|
||||
int res = 0;
|
||||
struct scatterlist *scatter = NULL;
|
||||
struct task_status_struct *ts = &task->task_status;
|
||||
int num_scatter = 0;
|
||||
int retries = 0;
|
||||
struct sas_internal *i =
|
||||
to_sas_internal(task->dev->port->ha->core.shost->transportt);
|
||||
|
||||
if (pci_dma_dir != PCI_DMA_NONE) {
|
||||
scatter = kzalloc(sizeof(*scatter), GFP_KERNEL);
|
||||
if (!scatter)
|
||||
goto out;
|
||||
|
||||
sg_init_one(scatter, buffer, size);
|
||||
num_scatter = 1;
|
||||
}
|
||||
|
||||
task->task_proto = task->dev->tproto;
|
||||
task->scatter = scatter;
|
||||
task->num_scatter = num_scatter;
|
||||
task->total_xfer_len = size;
|
||||
task->data_dir = pci_dma_dir;
|
||||
task->task_done = sas_disc_task_done;
|
||||
if (pci_dma_dir != PCI_DMA_NONE &&
|
||||
sas_protocol_ata(task->task_proto)) {
|
||||
task->num_scatter = pci_map_sg(task->dev->port->ha->pcidev,
|
||||
task->scatter,
|
||||
task->num_scatter,
|
||||
task->data_dir);
|
||||
}
|
||||
|
||||
for (retries = 0; retries < 5; retries++) {
|
||||
task->task_state_flags = SAS_TASK_STATE_PENDING;
|
||||
init_completion(&task->completion);
|
||||
|
||||
task->timer.data = (unsigned long) task;
|
||||
task->timer.function = sas_task_timedout;
|
||||
task->timer.expires = jiffies + SAS_DEV_TIMEOUT*HZ;
|
||||
add_timer(&task->timer);
|
||||
|
||||
res = i->dft->lldd_execute_task(task, 1, GFP_KERNEL);
|
||||
if (res) {
|
||||
del_timer(&task->timer);
|
||||
SAS_DPRINTK("executing SAS discovery task failed:%d\n",
|
||||
res);
|
||||
goto ex_err;
|
||||
}
|
||||
wait_for_completion(&task->completion);
|
||||
res = -ETASK;
|
||||
if (task->task_state_flags & SAS_TASK_STATE_ABORTED) {
|
||||
int res2;
|
||||
SAS_DPRINTK("task aborted, flags:0x%x\n",
|
||||
task->task_state_flags);
|
||||
res2 = i->dft->lldd_abort_task(task);
|
||||
SAS_DPRINTK("came back from abort task\n");
|
||||
if (!(task->task_state_flags & SAS_TASK_STATE_DONE)) {
|
||||
if (res2 == TMF_RESP_FUNC_COMPLETE)
|
||||
continue; /* Retry the task */
|
||||
else
|
||||
goto ex_err;
|
||||
}
|
||||
}
|
||||
if (task->task_status.stat == SAM_BUSY ||
|
||||
task->task_status.stat == SAM_TASK_SET_FULL ||
|
||||
task->task_status.stat == SAS_QUEUE_FULL) {
|
||||
SAS_DPRINTK("task: q busy, sleeping...\n");
|
||||
schedule_timeout_interruptible(HZ);
|
||||
} else if (task->task_status.stat == SAM_CHECK_COND) {
|
||||
struct scsi_sense_hdr shdr;
|
||||
|
||||
if (!scsi_normalize_sense(ts->buf, ts->buf_valid_size,
|
||||
&shdr)) {
|
||||
SAS_DPRINTK("couldn't normalize sense\n");
|
||||
continue;
|
||||
}
|
||||
if ((shdr.sense_key == 6 && shdr.asc == 0x29) ||
|
||||
(shdr.sense_key == 2 && shdr.asc == 4 &&
|
||||
shdr.ascq == 1)) {
|
||||
SAS_DPRINTK("device %016llx LUN: %016llx "
|
||||
"powering up or not ready yet, "
|
||||
"sleeping...\n",
|
||||
SAS_ADDR(task->dev->sas_addr),
|
||||
SAS_ADDR(task->ssp_task.LUN));
|
||||
|
||||
schedule_timeout_interruptible(5*HZ);
|
||||
} else if (shdr.sense_key == 1) {
|
||||
res = 0;
|
||||
break;
|
||||
} else if (shdr.sense_key == 5) {
|
||||
break;
|
||||
} else {
|
||||
SAS_DPRINTK("dev %016llx LUN: %016llx "
|
||||
"sense key:0x%x ASC:0x%x ASCQ:0x%x"
|
||||
"\n",
|
||||
SAS_ADDR(task->dev->sas_addr),
|
||||
SAS_ADDR(task->ssp_task.LUN),
|
||||
shdr.sense_key,
|
||||
shdr.asc, shdr.ascq);
|
||||
}
|
||||
} else if (task->task_status.resp != SAS_TASK_COMPLETE ||
|
||||
task->task_status.stat != SAM_GOOD) {
|
||||
SAS_DPRINTK("task finished with resp:0x%x, "
|
||||
"stat:0x%x\n",
|
||||
task->task_status.resp,
|
||||
task->task_status.stat);
|
||||
goto ex_err;
|
||||
} else {
|
||||
res = 0;
|
||||
break;
|
||||
}
|
||||
}
|
||||
ex_err:
|
||||
if (pci_dma_dir != PCI_DMA_NONE) {
|
||||
if (sas_protocol_ata(task->task_proto))
|
||||
pci_unmap_sg(task->dev->port->ha->pcidev,
|
||||
task->scatter, task->num_scatter,
|
||||
task->data_dir);
|
||||
kfree(scatter);
|
||||
}
|
||||
out:
|
||||
return res;
|
||||
}
|
||||
|
||||
/* ---------- Domain device discovery ---------- */
|
||||
|
||||
/**
|
||||
|
|
@ -313,202 +158,6 @@ static int sas_get_port_device(struct asd_sas_port *port)
|
|||
|
||||
/* ---------- Discover and Revalidate ---------- */
|
||||
|
||||
/* ---------- SATA ---------- */
|
||||
|
||||
static void sas_get_ata_command_set(struct domain_device *dev)
|
||||
{
|
||||
struct dev_to_host_fis *fis =
|
||||
(struct dev_to_host_fis *) dev->frame_rcvd;
|
||||
|
||||
if ((fis->sector_count == 1 && /* ATA */
|
||||
fis->lbal == 1 &&
|
||||
fis->lbam == 0 &&
|
||||
fis->lbah == 0 &&
|
||||
fis->device == 0)
|
||||
||
|
||||
(fis->sector_count == 0 && /* CE-ATA (mATA) */
|
||||
fis->lbal == 0 &&
|
||||
fis->lbam == 0xCE &&
|
||||
fis->lbah == 0xAA &&
|
||||
(fis->device & ~0x10) == 0))
|
||||
|
||||
dev->sata_dev.command_set = ATA_COMMAND_SET;
|
||||
|
||||
else if ((fis->interrupt_reason == 1 && /* ATAPI */
|
||||
fis->lbal == 1 &&
|
||||
fis->byte_count_low == 0x14 &&
|
||||
fis->byte_count_high == 0xEB &&
|
||||
(fis->device & ~0x10) == 0))
|
||||
|
||||
dev->sata_dev.command_set = ATAPI_COMMAND_SET;
|
||||
|
||||
else if ((fis->sector_count == 1 && /* SEMB */
|
||||
fis->lbal == 1 &&
|
||||
fis->lbam == 0x3C &&
|
||||
fis->lbah == 0xC3 &&
|
||||
fis->device == 0)
|
||||
||
|
||||
(fis->interrupt_reason == 1 && /* SATA PM */
|
||||
fis->lbal == 1 &&
|
||||
fis->byte_count_low == 0x69 &&
|
||||
fis->byte_count_high == 0x96 &&
|
||||
(fis->device & ~0x10) == 0))
|
||||
|
||||
/* Treat it as a superset? */
|
||||
dev->sata_dev.command_set = ATAPI_COMMAND_SET;
|
||||
}
|
||||
|
||||
/**
|
||||
* sas_issue_ata_cmd -- Basic SATA command processing for discovery
|
||||
* @dev: the device to send the command to
|
||||
* @command: the command register
|
||||
* @features: the features register
|
||||
* @buffer: pointer to buffer to do I/O
|
||||
* @size: size of @buffer
|
||||
* @pci_dma_dir: PCI_DMA_...
|
||||
*/
|
||||
static int sas_issue_ata_cmd(struct domain_device *dev, u8 command,
|
||||
u8 features, void *buffer, int size,
|
||||
int pci_dma_dir)
|
||||
{
|
||||
int res = 0;
|
||||
struct sas_task *task;
|
||||
struct dev_to_host_fis *d2h_fis = (struct dev_to_host_fis *)
|
||||
&dev->frame_rcvd[0];
|
||||
|
||||
res = -ENOMEM;
|
||||
task = sas_alloc_task(GFP_KERNEL);
|
||||
if (!task)
|
||||
goto out;
|
||||
|
||||
task->dev = dev;
|
||||
|
||||
task->ata_task.fis.fis_type = 0x27;
|
||||
task->ata_task.fis.command = command;
|
||||
task->ata_task.fis.features = features;
|
||||
task->ata_task.fis.device = d2h_fis->device;
|
||||
task->ata_task.retry_count = 1;
|
||||
|
||||
res = sas_execute_task(task, buffer, size, pci_dma_dir);
|
||||
|
||||
sas_free_task(task);
|
||||
out:
|
||||
return res;
|
||||
}
|
||||
|
||||
static void sas_sata_propagate_sas_addr(struct domain_device *dev)
|
||||
{
|
||||
unsigned long flags;
|
||||
struct asd_sas_port *port = dev->port;
|
||||
struct asd_sas_phy *phy;
|
||||
|
||||
BUG_ON(dev->parent);
|
||||
|
||||
memcpy(port->attached_sas_addr, dev->sas_addr, SAS_ADDR_SIZE);
|
||||
spin_lock_irqsave(&port->phy_list_lock, flags);
|
||||
list_for_each_entry(phy, &port->phy_list, port_phy_el)
|
||||
memcpy(phy->attached_sas_addr, dev->sas_addr, SAS_ADDR_SIZE);
|
||||
spin_unlock_irqrestore(&port->phy_list_lock, flags);
|
||||
}
|
||||
|
||||
#define ATA_IDENTIFY_DEV 0xEC
|
||||
#define ATA_IDENTIFY_PACKET_DEV 0xA1
|
||||
#define ATA_SET_FEATURES 0xEF
|
||||
#define ATA_FEATURE_PUP_STBY_SPIN_UP 0x07
|
||||
|
||||
/**
|
||||
* sas_discover_sata_dev -- discover a STP/SATA device (SATA_DEV)
|
||||
* @dev: STP/SATA device of interest (ATA/ATAPI)
|
||||
*
|
||||
* The LLDD has already been notified of this device, so that we can
|
||||
* send FISes to it. Here we try to get IDENTIFY DEVICE or IDENTIFY
|
||||
* PACKET DEVICE, if ATAPI device, so that the LLDD can fine-tune its
|
||||
* performance for this device.
|
||||
*/
|
||||
static int sas_discover_sata_dev(struct domain_device *dev)
|
||||
{
|
||||
int res;
|
||||
__le16 *identify_x;
|
||||
u8 command;
|
||||
|
||||
identify_x = kzalloc(512, GFP_KERNEL);
|
||||
if (!identify_x)
|
||||
return -ENOMEM;
|
||||
|
||||
if (dev->sata_dev.command_set == ATA_COMMAND_SET) {
|
||||
dev->sata_dev.identify_device = identify_x;
|
||||
command = ATA_IDENTIFY_DEV;
|
||||
} else {
|
||||
dev->sata_dev.identify_packet_device = identify_x;
|
||||
command = ATA_IDENTIFY_PACKET_DEV;
|
||||
}
|
||||
|
||||
res = sas_issue_ata_cmd(dev, command, 0, identify_x, 512,
|
||||
PCI_DMA_FROMDEVICE);
|
||||
if (res)
|
||||
goto out_err;
|
||||
|
||||
/* lives on the media? */
|
||||
if (le16_to_cpu(identify_x[0]) & 4) {
|
||||
/* incomplete response */
|
||||
SAS_DPRINTK("sending SET FEATURE/PUP_STBY_SPIN_UP to "
|
||||
"dev %llx\n", SAS_ADDR(dev->sas_addr));
|
||||
if (!le16_to_cpu(identify_x[83] & (1<<6)))
|
||||
goto cont1;
|
||||
res = sas_issue_ata_cmd(dev, ATA_SET_FEATURES,
|
||||
ATA_FEATURE_PUP_STBY_SPIN_UP,
|
||||
NULL, 0, PCI_DMA_NONE);
|
||||
if (res)
|
||||
goto cont1;
|
||||
|
||||
schedule_timeout_interruptible(5*HZ); /* More time? */
|
||||
res = sas_issue_ata_cmd(dev, command, 0, identify_x, 512,
|
||||
PCI_DMA_FROMDEVICE);
|
||||
if (res)
|
||||
goto out_err;
|
||||
}
|
||||
cont1:
|
||||
/* Get WWN */
|
||||
if (dev->port->oob_mode != SATA_OOB_MODE) {
|
||||
memcpy(dev->sas_addr, dev->sata_dev.rps_resp.rps.stp_sas_addr,
|
||||
SAS_ADDR_SIZE);
|
||||
} else if (dev->sata_dev.command_set == ATA_COMMAND_SET &&
|
||||
(le16_to_cpu(dev->sata_dev.identify_device[108]) & 0xF000)
|
||||
== 0x5000) {
|
||||
int i;
|
||||
|
||||
for (i = 0; i < 4; i++) {
|
||||
dev->sas_addr[2*i] =
|
||||
(le16_to_cpu(dev->sata_dev.identify_device[108+i]) & 0xFF00) >> 8;
|
||||
dev->sas_addr[2*i+1] =
|
||||
le16_to_cpu(dev->sata_dev.identify_device[108+i]) & 0x00FF;
|
||||
}
|
||||
}
|
||||
sas_hash_addr(dev->hashed_sas_addr, dev->sas_addr);
|
||||
if (!dev->parent)
|
||||
sas_sata_propagate_sas_addr(dev);
|
||||
|
||||
/* XXX Hint: register this SATA device with SATL.
|
||||
When this returns, dev->sata_dev->lu is alive and
|
||||
present.
|
||||
sas_satl_register_dev(dev);
|
||||
*/
|
||||
|
||||
sas_fill_in_rphy(dev, dev->rphy);
|
||||
|
||||
return 0;
|
||||
out_err:
|
||||
dev->sata_dev.identify_packet_device = NULL;
|
||||
dev->sata_dev.identify_device = NULL;
|
||||
kfree(identify_x);
|
||||
return res;
|
||||
}
|
||||
|
||||
static int sas_discover_sata_pm(struct domain_device *dev)
|
||||
{
|
||||
return -ENODEV;
|
||||
}
|
||||
|
||||
int sas_notify_lldd_dev_found(struct domain_device *dev)
|
||||
{
|
||||
int res = 0;
|
||||
|
|
@ -541,49 +190,6 @@ void sas_notify_lldd_dev_gone(struct domain_device *dev)
|
|||
|
||||
/* ---------- Common/dispatchers ---------- */
|
||||
|
||||
/**
|
||||
* sas_discover_sata -- discover an STP/SATA domain device
|
||||
* @dev: pointer to struct domain_device of interest
|
||||
*
|
||||
* First we notify the LLDD of this device, so we can send frames to
|
||||
* it. Then depending on the type of device we call the appropriate
|
||||
* discover functions. Once device discover is done, we notify the
|
||||
* LLDD so that it can fine-tune its parameters for the device, by
|
||||
* removing it and then adding it. That is, the second time around,
|
||||
* the driver would have certain fields, that it is looking at, set.
|
||||
* Finally we initialize the kobj so that the device can be added to
|
||||
* the system at registration time. Devices directly attached to a HA
|
||||
* port, have no parents. All other devices do, and should have their
|
||||
* "parent" pointer set appropriately before calling this function.
|
||||
*/
|
||||
int sas_discover_sata(struct domain_device *dev)
|
||||
{
|
||||
int res;
|
||||
|
||||
sas_get_ata_command_set(dev);
|
||||
|
||||
res = sas_notify_lldd_dev_found(dev);
|
||||
if (res)
|
||||
return res;
|
||||
|
||||
switch (dev->dev_type) {
|
||||
case SATA_DEV:
|
||||
res = sas_discover_sata_dev(dev);
|
||||
break;
|
||||
case SATA_PM:
|
||||
res = sas_discover_sata_pm(dev);
|
||||
break;
|
||||
default:
|
||||
break;
|
||||
}
|
||||
sas_notify_lldd_dev_gone(dev);
|
||||
if (!res) {
|
||||
sas_notify_lldd_dev_found(dev);
|
||||
res = sas_rphy_add(dev->rphy);
|
||||
}
|
||||
|
||||
return res;
|
||||
}
|
||||
|
||||
/**
|
||||
* sas_discover_end_dev -- discover an end device (SSP, etc)
|
||||
|
|
@ -690,11 +296,14 @@ static void sas_discover_domain(struct work_struct *work)
|
|||
case FANOUT_DEV:
|
||||
error = sas_discover_root_expander(dev);
|
||||
break;
|
||||
#ifdef CONFIG_SCSI_SAS_ATA
|
||||
case SATA_DEV:
|
||||
case SATA_PM:
|
||||
error = sas_discover_sata(dev);
|
||||
break;
|
||||
#endif
|
||||
default:
|
||||
error = -ENXIO;
|
||||
SAS_DPRINTK("unhandled device %d\n", dev->dev_type);
|
||||
break;
|
||||
}
|
||||
|
|
|
|||
|
|
@ -535,6 +535,8 @@ int sas_smp_get_phy_events(struct sas_phy *phy)
|
|||
|
||||
}
|
||||
|
||||
#ifdef CONFIG_SCSI_SAS_ATA
|
||||
|
||||
#define RPS_REQ_SIZE 16
|
||||
#define RPS_RESP_SIZE 60
|
||||
|
||||
|
|
@ -578,6 +580,7 @@ static int sas_get_report_phy_sata(struct domain_device *dev,
|
|||
kfree(rps_req);
|
||||
return res;
|
||||
}
|
||||
#endif
|
||||
|
||||
static void sas_ex_get_linkrate(struct domain_device *parent,
|
||||
struct domain_device *child,
|
||||
|
|
@ -645,6 +648,7 @@ static struct domain_device *sas_ex_discover_end_dev(
|
|||
}
|
||||
sas_ex_get_linkrate(parent, child, phy);
|
||||
|
||||
#ifdef CONFIG_SCSI_SAS_ATA
|
||||
if ((phy->attached_tproto & SAS_PROTO_STP) || phy->attached_sata_dev) {
|
||||
child->dev_type = SATA_DEV;
|
||||
if (phy->attached_tproto & SAS_PROTO_STP)
|
||||
|
|
@ -682,7 +686,9 @@ static struct domain_device *sas_ex_discover_end_dev(
|
|||
SAS_ADDR(parent->sas_addr), phy_id, res);
|
||||
goto out_list_del;
|
||||
}
|
||||
} else if (phy->attached_tproto & SAS_PROTO_SSP) {
|
||||
} else
|
||||
#endif
|
||||
if (phy->attached_tproto & SAS_PROTO_SSP) {
|
||||
child->dev_type = SAS_END_DEV;
|
||||
rphy = sas_end_device_alloc(phy->port);
|
||||
/* FIXME: error handling */
|
||||
|
|
@ -710,6 +716,7 @@ static struct domain_device *sas_ex_discover_end_dev(
|
|||
SAS_DPRINTK("target proto 0x%x at %016llx:0x%x not handled\n",
|
||||
phy->attached_tproto, SAS_ADDR(parent->sas_addr),
|
||||
phy_id);
|
||||
goto out_free;
|
||||
}
|
||||
|
||||
list_add_tail(&child->siblings, &parent_ex->children);
|
||||
|
|
|
|||
|
|
@ -28,6 +28,8 @@
|
|||
#include <linux/libata.h>
|
||||
#include <scsi/libsas.h>
|
||||
|
||||
#ifdef CONFIG_SCSI_SAS_ATA
|
||||
|
||||
static inline int dev_is_sata(struct domain_device *dev)
|
||||
{
|
||||
return (dev->rphy->identify.target_port_protocols & SAS_PROTOCOL_SATA);
|
||||
|
|
@ -38,4 +40,21 @@ int sas_ata_init_host_and_port(struct domain_device *found_dev,
|
|||
|
||||
void sas_ata_task_abort(struct sas_task *task);
|
||||
|
||||
#else
|
||||
|
||||
|
||||
static inline int dev_is_sata(struct domain_device *dev)
|
||||
{
|
||||
return 0;
|
||||
}
|
||||
int sas_ata_init_host_and_port(struct domain_device *found_dev,
|
||||
struct scsi_target *starget)
|
||||
{
|
||||
return 0;
|
||||
}
|
||||
void sas_ata_task_abort(struct sas_task *task)
|
||||
{
|
||||
}
|
||||
#endif
|
||||
|
||||
#endif /* _SAS_ATA_H_ */
|
||||
|
|
|
|||
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