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Merge branch 'WIP.x86/asm' into x86/urgent, because the topic is ready
Signed-off-by: Ingo Molnar <[email protected]>
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@@ -62,6 +62,7 @@ Frank Zago <[email protected]> | |
| Greg Kroah-Hartman <greg@echidna.(none)> | ||
| Greg Kroah-Hartman <[email protected]> | ||
| Greg Kroah-Hartman <[email protected]> | ||
| Gregory CLEMENT <[email protected]> <[email protected]> | ||
| Henk Vergonet <[email protected]> | ||
| Henrik Kretzschmar <[email protected]> | ||
| Henrik Rydberg <[email protected]> | ||
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@@ -1564,6 +1564,11 @@ W: http://www.carumba.com/ | |
| D: bug toaster (A1 sauce makes all the difference) | ||
| D: Random linux hacker | ||
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| N: James Hogan | ||
| E: [email protected] | ||
| D: Metag architecture maintainer | ||
| D: TZ1090 SoC maintainer | ||
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| N: Tim Hockin | ||
| E: [email protected] | ||
| W: http://www.hockin.org/~thockin | ||
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| Original file line number | Diff line number | Diff line change |
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| @@ -1,110 +1,139 @@ | ||
| What: /sys/class/ata_... | ||
| Date: August 2008 | ||
| Contact: Gwendal Grignou<[email protected]> | ||
| Description: | ||
|
|
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| Provide a place in sysfs for storing the ATA topology of the system. This allows | ||
| retrieving various information about ATA objects. | ||
| Provide a place in sysfs for storing the ATA topology of the | ||
| system. This allows retrieving various information about ATA | ||
| objects. | ||
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||
| Files under /sys/class/ata_port | ||
| ------------------------------- | ||
|
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| 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. | ||
| 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. | ||
|
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| idle_irq (read) | ||
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| Number of IRQ received by the port while idle [some ata HBA only]. | ||
| What: /sys/class/ata_port/ataX/nr_pmp_links | ||
| What: /sys/class/ata_port/ataX/idle_irq | ||
| Date: May, 2010 | ||
| KernelVersion: v2.6.37 | ||
| Contact: Gwendal Grignou <[email protected]> | ||
| Description: | ||
| nr_pmp_links: (RO) If a SATA Port Multiplier (PM) is | ||
| connected, the number of links behind it. | ||
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| nr_pmp_links (read) | ||
| idle_irq: (RO) Number of IRQ received by the port while | ||
| idle [some ata HBA only]. | ||
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| If a SATA Port Multiplier (PM) is connected, number of link behind it. | ||
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| What: /sys/class/ata_port/ataX/port_no | ||
| Date: May, 2013 | ||
| KernelVersion: v3.11 | ||
| Contact: Gwendal Grignou <[email protected]> | ||
| Description: | ||
| (RO) Host local port number. While registering host controller, | ||
| port numbers are tracked based upon number of ports available on | ||
| the controller. This attribute is needed by udev for composing | ||
| persistent links in /dev/disk/by-path. | ||
|
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||
| Files under /sys/class/ata_link | ||
| ------------------------------- | ||
|
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| Behind each port, there is a ata_link. If there is a SATA PM in the | ||
| topology, 15 ata_link objects are created. | ||
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| 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. | ||
| Behind each port, there is a ata_link. If there is a SATA PM in the topology, 15 | ||
| ata_link objects are created. | ||
|
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| hw_sata_spd_limit | ||
| 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. | ||
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| Maximum speed supported by the connected SATA device. | ||
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| sata_spd_limit | ||
| What: /sys/class/ata_link/linkX[.Y]/hw_sata_spd_limit | ||
| What: /sys/class/ata_link/linkX[.Y]/sata_spd_limit | ||
| What: /sys/class/ata_link/linkX[.Y]/sata_spd | ||
| Date: May, 2010 | ||
| KernelVersion: v2.6.37 | ||
| Contact: Gwendal Grignou <[email protected]> | ||
| Description: | ||
| hw_sata_spd_limit: (RO) Maximum speed supported by the | ||
| connected SATA device. | ||
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| Maximum speed imposed by libata. | ||
| sata_spd_limit: (RO) Maximum speed imposed by libata. | ||
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| sata_spd | ||
| sata_spd: (RO) Current speed of the link | ||
| eg. 1.5, 3 Gbps etc. | ||
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| Current speed of the link [1.5, 3Gps,...]. | ||
|
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| Files under /sys/class/ata_device | ||
| --------------------------------- | ||
|
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| 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. | ||
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| 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. | ||
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| dma_mode | ||
| Behind each link, up to two ata devices 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. | ||
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| What: /sys/class/ata_device/devX[.Y].Z/spdn_cnt | ||
| What: /sys/class/ata_device/devX[.Y].Z/gscr | ||
| What: /sys/class/ata_device/devX[.Y].Z/ering | ||
| What: /sys/class/ata_device/devX[.Y].Z/id | ||
| What: /sys/class/ata_device/devX[.Y].Z/pio_mode | ||
| What: /sys/class/ata_device/devX[.Y].Z/xfer_mode | ||
| What: /sys/class/ata_device/devX[.Y].Z/dma_mode | ||
| What: /sys/class/ata_device/devX[.Y].Z/class | ||
| Date: May, 2010 | ||
| KernelVersion: v2.6.37 | ||
| Contact: Gwendal Grignou <[email protected]> | ||
| Description: | ||
| spdn_cnt: (RO) Number of times libata decided to lower the | ||
| speed of link due to errors. | ||
|
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| Transfer modes supported by the device when in DMA mode. | ||
| Mostly used by PATA device. | ||
| gscr: (RO) Cached result of the dump of PM GSCR | ||
| register. Valid registers are: | ||
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| pio_mode | ||
| 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 | ||
|
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| Transfer modes supported by the device when in PIO mode. | ||
| Mostly used by PATA device. | ||
| Only valid if the device is a PM. | ||
|
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| xfer_mode | ||
| ering: (RO) Formatted output of the error ring of the | ||
| device. | ||
|
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| Current transfer mode. | ||
| id: (RO) Cached result of IDENTIFY command, as | ||
| described in ATA8 7.16 and 7.17. Only valid if | ||
| the device is not a PM. | ||
|
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| id | ||
| pio_mode: (RO) Transfer modes supported by the device when | ||
| in PIO mode. Mostly used by PATA device. | ||
|
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| Cached result of IDENTIFY command, as described in ATA8 7.16 and 7.17. | ||
| Only valid if the device is not a PM. | ||
| xfer_mode: (RO) Current transfer mode | ||
|
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| gscr | ||
| dma_mode: (RO) Transfer modes supported by the device when | ||
| in DMA mode. Mostly used by PATA device. | ||
|
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| 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. | ||
| class: (RO) Device class. Can be "ata" for disk, | ||
| "atapi" for packet device, "pmp" for PM, or | ||
| "none" if no device was found behind the link. | ||
|
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| trim | ||
|
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| Shows the DSM TRIM mode currently used by the device. Valid | ||
| values are: | ||
| unsupported: Drive does not support DSM TRIM | ||
| unqueued: Drive supports unqueued DSM TRIM only | ||
| queued: Drive supports queued DSM TRIM | ||
| forced_unqueued: Drive's queued DSM support is known to be | ||
| buggy and only unqueued TRIM commands | ||
| are sent | ||
| What: /sys/class/ata_device/devX[.Y].Z/trim | ||
| Date: May, 2015 | ||
| KernelVersion: v4.10 | ||
| Contact: Gwendal Grignou <[email protected]> | ||
| Description: | ||
| (RO) Shows the DSM TRIM mode currently used by the device. Valid | ||
| values are: | ||
|
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| spdn_cnt | ||
| unsupported: Drive does not support DSM TRIM | ||
|
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| Number of time libata decided to lower the speed of link due to errors. | ||
| unqueued: Drive supports unqueued DSM TRIM only | ||
|
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| ering | ||
| queued: Drive supports queued DSM TRIM | ||
|
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||
| Formatted output of the error ring of the device. | ||
| forced_unqueued: Drive's queued DSM support is known to | ||
| be buggy and only unqueued TRIM commands | ||
| are sent |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,58 @@ | ||
| What: /sys/block/*/device/sw_activity | ||
| Date: Jun, 2008 | ||
| KernelVersion: v2.6.27 | ||
| Contact: [email protected] | ||
| Description: | ||
| (RW) Used by drivers which support software controlled activity | ||
| LEDs. | ||
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| It has the following valid values: | ||
|
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| 0 OFF - the LED is not activated on activity | ||
| 1 BLINK_ON - the LED blinks on every 10ms when activity is | ||
| detected. | ||
| 2 BLINK_OFF - the LED is on when idle, and blinks off | ||
| every 10ms when activity is detected. | ||
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| Note that the user must turn sw_activity OFF it they wish to | ||
| control the activity LED via the em_message file. | ||
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| What: /sys/block/*/device/unload_heads | ||
| Date: Sep, 2008 | ||
| KernelVersion: v2.6.28 | ||
| Contact: [email protected] | ||
| Description: | ||
| (RW) Hard disk shock protection | ||
|
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| Writing an integer value to this file will take the heads of the | ||
| respective drive off the platter and block all I/O operations | ||
| for the specified number of milliseconds. | ||
|
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| - If the device does not support the unload heads feature, | ||
| access is denied with -EOPNOTSUPP. | ||
| - The maximal value accepted for a timeout is 30000 | ||
| milliseconds. | ||
| - A previously set timeout can be cancelled and disk can resume | ||
| normal operation immediately by specifying a timeout of 0. | ||
| - Some hard drives only comply with an earlier version of the | ||
| ATA standard, but support the unload feature nonetheless. | ||
| There is no safe way Linux can detect these devices, so this | ||
| is not enabled by default. If it is known that your device | ||
| does support the unload feature, then you can tell the kernel | ||
| to enable it by writing -1. It can be disabled again by | ||
| writing -2. | ||
| - Values below -2 are rejected with -EINVAL | ||
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| For more information, see | ||
| Documentation/laptops/disk-shock-protection.txt | ||
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| What: /sys/block/*/device/ncq_prio_enable | ||
| Date: Oct, 2016 | ||
| KernelVersion: v4.10 | ||
| Contact: [email protected] | ||
| Description: | ||
| (RW) Write to the file to turn on or off the SATA ncq (native | ||
| command queueing) support. By default this feature is turned | ||
| off. |
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