mirror of https://gitee.com/openkylin/linux.git
Merge branch 'upstream-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jgarzik/libata-dev
* 'upstream-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jgarzik/libata-dev: pata_ali: disable ATAPI DMA libata: ATA_12/16 doesn't fall into ATAPI_MISC libata: uninline atapi_cmd_type() libata: fix IDENTIFY order in ata_bus_probe()
This commit is contained in:
Linus Torvalds
commit
7a5ac8def9
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@ -325,6 +325,44 @@ static void ata_force_horkage(struct ata_device *dev)
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}
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}
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/**
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* atapi_cmd_type - Determine ATAPI command type from SCSI opcode
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* @opcode: SCSI opcode
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*
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* Determine ATAPI command type from @opcode.
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*
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* LOCKING:
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* None.
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*
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* RETURNS:
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* ATAPI_{READ|WRITE|READ_CD|PASS_THRU|MISC}
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*/
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int atapi_cmd_type(u8 opcode)
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{
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switch (opcode) {
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case GPCMD_READ_10:
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case GPCMD_READ_12:
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return ATAPI_READ;
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case GPCMD_WRITE_10:
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case GPCMD_WRITE_12:
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case GPCMD_WRITE_AND_VERIFY_10:
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return ATAPI_WRITE;
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case GPCMD_READ_CD:
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case GPCMD_READ_CD_MSF:
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return ATAPI_READ_CD;
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case ATA_16:
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case ATA_12:
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if (atapi_passthru16)
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return ATAPI_PASS_THRU;
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/* fall thru */
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default:
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return ATAPI_MISC;
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}
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}
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/**
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* ata_tf_to_fis - Convert ATA taskfile to SATA FIS structure
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* @tf: Taskfile to convert
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@ -2660,7 +2698,7 @@ int ata_bus_probe(struct ata_port *ap)
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specific sequence bass-ackwards so that PDIAG- is released by
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the slave device */
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ata_link_for_each_dev(dev, &ap->link) {
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ata_link_for_each_dev_reverse(dev, &ap->link) {
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if (tries[dev->devno])
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dev->class = classes[dev->devno];
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@ -7774,6 +7812,7 @@ EXPORT_SYMBOL_GPL(ata_tf_read);
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EXPORT_SYMBOL_GPL(ata_noop_dev_select);
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EXPORT_SYMBOL_GPL(ata_std_dev_select);
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EXPORT_SYMBOL_GPL(sata_print_link_status);
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EXPORT_SYMBOL_GPL(atapi_cmd_type);
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EXPORT_SYMBOL_GPL(ata_tf_to_fis);
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EXPORT_SYMBOL_GPL(ata_tf_from_fis);
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EXPORT_SYMBOL_GPL(ata_pack_xfermask);
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@ -36,6 +36,10 @@
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#define DRV_NAME "pata_ali"
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#define DRV_VERSION "0.7.5"
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int ali_atapi_dma = 0;
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module_param_named(atapi_dma, ali_atapi_dma, int, 0644);
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MODULE_PARM_DESC(atapi_dma, "Enable ATAPI DMA (0=disable, 1=enable)");
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/*
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* Cable special cases
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*/
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@ -269,6 +273,27 @@ static void ali_set_dmamode(struct ata_port *ap, struct ata_device *adev)
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}
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}
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/**
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* ali_warn_atapi_dma - Warn about ATAPI DMA disablement
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* @adev: Device
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*
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* Whine about ATAPI DMA disablement if @adev is an ATAPI device.
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* Can be used as ->dev_config.
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*/
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static void ali_warn_atapi_dma(struct ata_device *adev)
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{
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struct ata_eh_context *ehc = &adev->link->eh_context;
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int print_info = ehc->i.flags & ATA_EHI_PRINTINFO;
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if (print_info && adev->class == ATA_DEV_ATAPI && !ali_atapi_dma) {
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ata_dev_printk(adev, KERN_WARNING,
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"WARNING: ATAPI DMA disabled for reliablity issues. It can be enabled\n");
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ata_dev_printk(adev, KERN_WARNING,
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"WARNING: via pata_ali.atapi_dma modparam or corresponding sysfs node.\n");
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}
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}
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/**
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* ali_lock_sectors - Keep older devices to 255 sector mode
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* @adev: Device
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@ -283,6 +308,7 @@ static void ali_set_dmamode(struct ata_port *ap, struct ata_device *adev)
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static void ali_lock_sectors(struct ata_device *adev)
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{
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adev->max_sectors = 255;
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ali_warn_atapi_dma(adev);
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}
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/**
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@ -294,6 +320,18 @@ static void ali_lock_sectors(struct ata_device *adev)
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static int ali_check_atapi_dma(struct ata_queued_cmd *qc)
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{
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if (!ali_atapi_dma) {
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/* FIXME: pata_ali can't do ATAPI DMA reliably but the
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* IDE alim15x3 driver can. I tried lots of things
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* but couldn't find what the actual difference was.
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* If you got an idea, please write it to
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* linux-ide@vger.kernel.org and cc htejun@gmail.com.
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*
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* Disable ATAPI DMA for now.
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*/
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return -EOPNOTSUPP;
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}
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/* If its not a media command, its not worth it */
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if (atapi_cmd_type(qc->cdb[0]) == ATAPI_MISC)
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return -EOPNOTSUPP;
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@ -359,6 +397,7 @@ static struct ata_port_operations ali_20_port_ops = {
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.tf_load = ata_tf_load,
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.tf_read = ata_tf_read,
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.check_atapi_dma = ali_check_atapi_dma,
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.check_status = ata_check_status,
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.exec_command = ata_exec_command,
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.dev_select = ata_std_dev_select,
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@ -438,6 +477,7 @@ static struct ata_port_operations ali_c5_port_ops = {
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.check_status = ata_check_status,
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.exec_command = ata_exec_command,
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.dev_select = ata_std_dev_select,
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.dev_config = ali_warn_atapi_dma,
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.freeze = ata_bmdma_freeze,
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.thaw = ata_bmdma_thaw,
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@ -350,7 +350,8 @@ enum {
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ATAPI_READ = 0, /* READs */
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ATAPI_WRITE = 1, /* WRITEs */
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ATAPI_READ_CD = 2, /* READ CD [MSF] */
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ATAPI_MISC = 3, /* the rest */
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ATAPI_PASS_THRU = 3, /* SAT pass-thru */
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ATAPI_MISC = 4, /* the rest */
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};
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enum ata_xfer_mask {
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@ -849,6 +850,7 @@ extern unsigned int ata_dev_try_classify(struct ata_device *dev, int present,
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*/
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extern void ata_tf_load(struct ata_port *ap, const struct ata_taskfile *tf);
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extern void ata_tf_read(struct ata_port *ap, struct ata_taskfile *tf);
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extern int atapi_cmd_type(u8 opcode);
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extern void ata_tf_to_fis(const struct ata_taskfile *tf,
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u8 pmp, int is_cmd, u8 *fis);
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extern void ata_tf_from_fis(const u8 *fis, struct ata_taskfile *tf);
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@ -1379,27 +1381,6 @@ static inline int ata_try_flush_cache(const struct ata_device *dev)
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ata_id_has_flush_ext(dev->id);
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}
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static inline int atapi_cmd_type(u8 opcode)
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{
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switch (opcode) {
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case GPCMD_READ_10:
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case GPCMD_READ_12:
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return ATAPI_READ;
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case GPCMD_WRITE_10:
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case GPCMD_WRITE_12:
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case GPCMD_WRITE_AND_VERIFY_10:
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return ATAPI_WRITE;
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case GPCMD_READ_CD:
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case GPCMD_READ_CD_MSF:
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return ATAPI_READ_CD;
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default:
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return ATAPI_MISC;
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}
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}
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static inline unsigned int ac_err_mask(u8 status)
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{
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if (status & (ATA_BUSY | ATA_DRQ))
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