This provides transport specific helpers for SAS drivers which
use the domain device construct (like the aic94xxx).
+config SCSI_SAS_ATA
+ bool "ATA support for libsas (requires libata)"
+ depends on SCSI_SAS_LIBSAS && ATA
+ help
+ Builds in ATA support into libsas. Will necessitate
+ the loading of libata along with libsas.
+
config SCSI_SAS_LIBSAS_DEBUG
bool "Compile the SAS Domain Transport Attributes in debug mode"
default y
sas_dump.o \
sas_discover.o \
sas_expander.o \
- sas_scsi_host.o \
- sas_ata.o
+ sas_scsi_host.o
+libsas-$(CONFIG_SCSI_SAS_ATA) += sas_ata.o
* USA
*/
+#include <linux/scatterlist.h>
+
#include <scsi/sas_ata.h>
#include "sas_internal.h"
#include <scsi/scsi_host.h>
waiting = qc->private_data;
complete(waiting);
}
+
+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;
+}
+
+/* ---------- 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;
+}
+
+/**
+ * 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;
+}
}
}
-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 ---------- */
/**
/* ---------- 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;
/* ---------- 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)
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;
}
}
+#ifdef CONFIG_SCSI_SAS_ATA
+
#define RPS_REQ_SIZE 16
#define RPS_RESP_SIZE 60
kfree(rps_req);
return res;
}
+#endif
static void sas_ex_get_linkrate(struct domain_device *parent,
struct domain_device *child,
}
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)
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 */
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);
#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);
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_ */
projects / linux-stable / commitdiff