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Diffstat (limited to 'Documentation/ABI/testing/sysfs-ata')
| -rw-r--r-- | Documentation/ABI/testing/sysfs-ata | 99 |
1 files changed, 0 insertions, 99 deletions
diff --git a/Documentation/ABI/testing/sysfs-ata b/Documentation/ABI/testing/sysfs-ata deleted file mode 100644 index 0a932155cbb..00000000000 --- a/Documentation/ABI/testing/sysfs-ata +++ /dev/null @@ -1,99 +0,0 @@ -What: /sys/class/ata_... -Date: August 2008 -Contact: Gwendal Grignou<gwendal@google.com> -Description: - -Provide a place in sysfs for storing the ATA topology of the system. This allows -retrieving various information about ATA objects. - -Files under /sys/class/ata_port -------------------------------- - - For each port, a directory ataX is created where X is the ata_port_id of - the port. The device parent is the ata host device. - -idle_irq (read) - - Number of IRQ received by the port while idle [some ata HBA only]. - -nr_pmp_links (read) - - If a SATA Port Multiplier (PM) is connected, number of link behind it. - -Files under /sys/class/ata_link -------------------------------- - - Behind each port, there is a ata_link. If there is a SATA PM in the - topology, 15 ata_link objects are created. - - If a link is behind a port, the directory name is linkX, where X is - ata_port_id of the port. - If a link is behind a PM, its name is linkX.Y where X is ata_port_id - of the parent port and Y the PM port. - -hw_sata_spd_limit - - Maximum speed supported by the connected SATA device. - -sata_spd_limit - - Maximum speed imposed by libata. - -sata_spd - - Current speed of the link [1.5, 3Gps,...]. - -Files under /sys/class/ata_device ---------------------------------- - - Behind each link, up to two ata device are created. - The name of the directory is devX[.Y].Z where: - - X is ata_port_id of the port where the device is connected, - - Y the port of the PM if any, and - - Z the device id: for PATA, there is usually 2 devices [0,1], - only 1 for SATA. - -class - Device class. Can be "ata" for disk, "atapi" for packet device, - "pmp" for PM, or "none" if no device was found behind the link. - -dma_mode - - Transfer modes supported by the device when in DMA mode. - Mostly used by PATA device. - -pio_mode - - Transfer modes supported by the device when in PIO mode. - Mostly used by PATA device. - -xfer_mode - - Current transfer mode. - -id - - Cached result of IDENTIFY command, as described in ATA8 7.16 and 7.17. - Only valid if the device is not a PM. - -gscr - - Cached result of the dump of PM GSCR register. - Valid registers are: - 0: SATA_PMP_GSCR_PROD_ID, - 1: SATA_PMP_GSCR_REV, - 2: SATA_PMP_GSCR_PORT_INFO, - 32: SATA_PMP_GSCR_ERROR, - 33: SATA_PMP_GSCR_ERROR_EN, - 64: SATA_PMP_GSCR_FEAT, - 96: SATA_PMP_GSCR_FEAT_EN, - 130: SATA_PMP_GSCR_SII_GPIO - Only valid if the device is a PM. - -spdn_cnt - - Number of time libata decided to lower the speed of link due to errors. - -ering - - Formatted output of the error ring of the device. |