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  1. 03 Jun, 2013 1 commit
  3. 15 Apr, 2013 1 commit
  5. 04 Mar, 2013 1 commit
  7. 20 Feb, 2013 1 commit
  9. 25 Jan, 2013 1 commit
  11. 24 Jan, 2013 1 commit
    • Alexander Gordeev's avatar
      AHCI: Support multiple MSIs · 5ca72c4f
      Alexander Gordeev authored 
      Take advantage of multiple MSIs implementation on x86 - on
systems with IRQ remapping AHCI ports not only get assigned
separate MSI vectors - but also separate IRQs. As result,
interrupts generated by different ports could be serviced on
different CPUs rather than on a single one.

In cases when number of allocated MSIs is less than requested
the Sharing Last MSI mode does not get used, no matter
implemented in hardware or not. Instead, the driver assumes the
advantage of multiple MSIs is negated and falls back to the
single MSI mode as if MRSM bit was set (some Intel chips
implement this strategy anyway - MRSM bit gets set even if the
number of allocated MSIs exceeds the number of implemented ports).
Signed-off-by: default avatarAlexander Gordeev <agordeev@redhat.com>
Acked-by: default avatarJeff Garzik <jgarzik@redhat.com>
Cc: Bjorn Helgaas <bhelgaas@google.com>
Cc: Suresh Siddha <suresh.b.siddha@intel.com>
Cc: Yinghai Lu <yinghai@kernel.org>
Cc: Matthew Wilcox <willy@linux.intel.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Thomas Gleixner <tglx@linutronix.de>
Link: http://lkml.kernel.org/r/15bf7ee314dd55f21ec7d2a01c47613cd8190a7c.1353324359.git.agordeev@redhat.comSigned-off-by: default avatarIngo Molnar <mingo@kernel.org>
      5ca72c4f
  13. 14 Jan, 2013 1 commit
  15. 13 Sep, 2012 3 commits
  17. 17 Aug, 2012 1 commit
  19. 25 Jul, 2012 3 commits
  21. 03 May, 2012 1 commit
  23. 13 Mar, 2012 2 commits
  25. 09 Jan, 2012 1 commit
  27. 09 Nov, 2011 1 commit
  29. 23 Jul, 2011 6 commits
    • Seth Heasley's avatar
      ahci: RAID-mode SATA patch for Intel Panther Point DeviceIDs · 2cab7a4c
      Seth Heasley authored 
      This patch adds an additional SATA RAID controller DeviceID for the Intel Panther Point PCH.
Signed-off-by: default avatarSeth Heasley <seth.heasley@intel.com>
Signed-off-by: default avatarJeff Garzik <jgarzik@pobox.com>
      2cab7a4c
    • Mark Nelson's avatar
      ahci: Enable SB600 64bit DMA on Asus M3A · 3c4aa91f
      Mark Nelson authored 
      Like e65cc194 this patch enables 64bit DMA
for the AHCI SATA controller of a board that has the SB600 southbridge. In
this case though we're enabling 64bit DMA for the Asus M3A motherboard. It
is a new enough board that all of the BIOS releases since the initial
release (0301 from 2007-10-22) work correctly with 64bit DMA enabled.
Signed-off-by: default avatarMark Nelson <mdnelson8@gmail.com>
Signed-off-by: default avatarJeff Garzik <jgarzik@pobox.com>
      3c4aa91f
    • Yuan-Hsin Chen's avatar
      ahci: move ahci_sb600_softreset to libahci.c and rename it · 345347c5
      Yuan-Hsin Chen authored 
      ahci_sb600_softreset was in ahci.c. This function is used
to fix soft reset failure and renames as ahci_pmp_retry_softreset
in libahci.c.
Signed-off-by: default avatarYuan-Hsin Chen <yhchen@faraday-tech.com>
Signed-off-by: default avatarJeff Garzik <jgarzik@pobox.com>
      345347c5
    • Joe Perches's avatar
      ata: Add and use ata_print_version_once · 06296a1e
      Joe Perches authored 
      Use a single mechanism to show driver version.
Reduces text a tiny bit too.

Remove uses of static int printed_version
Add and use ata_print_version(const struct device *, const char *ver)
and ata_print_version_once.

$ size drivers/ata/built-in.*
   text	   data	    bss	    dec	    hex	filename
 544969	  73893	 116584	 735446	  b38d6	drivers/ata/built-in.allyesconfig.ata.o
 543870	  73893	 116592	 734355	  b34ad	drivers/ata/built-in.allyesconfig.print_once.o
 141328	  14689	   4220	 160237	  271ed	drivers/ata/built-in.defconfig.ata.o
 141212	  14689	   4220	 160121	  27179	drivers/ata/built-in.defconfig.print_once.o
Signed-off-by: default avatarJoe Perches <joe@perches.com>
Signed-off-by: default avatarJeff Garzik <jgarzik@pobox.com>
      06296a1e
    • Joe Perches's avatar
      ata: Convert ata_<foo>_printk(KERN_<LEVEL> to ata_<foo>_<level> · a9a79dfe
      Joe Perches authored 
      Saves text by removing nearly duplicated text format strings by
creating ata_<foo>_printk functions and printf extension %pV.

ata defconfig size shrinks ~5% (~8KB), allyesconfig ~2.5% (~13KB)

Format string duplication comes from:

 #define ata_link_printk(link, lv, fmt, args...) do { \
       if (sata_pmp_attached((link)->ap) || (link)->ap->slave_link)    \
               printk("%sata%u.%02u: "fmt, lv, (link)->ap->print_id,   \
                      (link)->pmp , ##args); \
       else \
               printk("%sata%u: "fmt, lv, (link)->ap->print_id , ##args); \
       } while(0)

Coalesce long formats.

$ size drivers/ata/built-in.*
   text	   data	    bss	    dec	    hex	filename
 544969	  73893	 116584	 735446	  b38d6	drivers/ata/built-in.allyesconfig.ata.o
 558429	  73893	 117864	 750186	  b726a	drivers/ata/built-in.allyesconfig.dev_level.o
 141328	  14689	   4220	 160237	  271ed	drivers/ata/built-in.defconfig.ata.o
 149567	  14689	   4220	 168476	  2921c	drivers/ata/built-in.defconfig.dev_level.o
Signed-off-by: default avatarJoe Perches <joe@perches.com>
Signed-off-by: default avatarJeff Garzik <jgarzik@pobox.com>
      a9a79dfe
    • Joe Perches's avatar
      ata: Convert dev_printk(KERN_<LEVEL> to dev_<level>( · a44fec1f
      Joe Perches authored 
      Saves a bit of text as the call takes fewer args.

Coalesce a few formats.
Convert a few bare printks to pr_cont.

$ size drivers/ata/built-in.o*
   text	   data	    bss	    dec	    hex	filename
 558429	  73893	 117864	 750186	  b726a	drivers/ata/built-in.o.allyesconfig.new
 559574	  73893	 117888	 751355	  b76fb	drivers/ata/built-in.o.allyesconfig.old
 149567	  14689	   4220	 168476	  2921c	drivers/ata/built-in.o.defconfig.new
 149851	  14689	   4220	 168760	  29338	drivers/ata/built-in.o.defconfig.old
Signed-off-by: default avatarJoe Perches <joe@perches.com>
Signed-off-by: default avatarJeff Garzik <jgarzik@pobox.com>
      a44fec1f
  31. 24 Apr, 2011 2 commits
  33. 31 Mar, 2011 1 commit
  35. 15 Mar, 2011 1 commit
  37. 14 Mar, 2011 1 commit
  39. 02 Mar, 2011 3 commits
  41. 28 Jan, 2011 2 commits
  43. 22 Oct, 2010 2 commits
    • Tejun Heo's avatar
      libata: reimplement link power management · 6b7ae954
      Tejun Heo authored 
      The current LPM implementation has the following issues.

* Operation order isn't well thought-out.  e.g. HIPM should be
  configured after IPM in SControl is properly configured.  Not the
  other way around.

* Suspend/resume paths call ata_lpm_enable/disable() which must only
  be called from EH context directly.  Also, ata_lpm_enable/disable()
  were called whether LPM was in use or not.

* Implementation is per-port when it should be per-link.  As a result,
  it can't be used for controllers with slave links or PMP.

* LPM state isn't managed consistently.  After a link reset for
  whatever reason including suspend/resume the actual LPM state would
  be reset leaving ap->lpm_policy inconsistent.

* Generic/driver-specific logic boundary isn't clear.  Currently,
  libahci has to mangle stuff which libata EH proper should be
  handling.  This makes the implementation unnecessarily complex and
  fragile.

* Tied to ALPM.  Doesn't consider DIPM only cases and doesn't check
  whether the device allows HIPM.

* Error handling isn't implemented.

Given the extent of mismatch with the rest of libata, I don't think
trying to fix it piecewise makes much sense.  This patch reimplements
LPM support.

* The new implementation is per-link.  The target policy is still
  port-wide (ap->target_lpm_policy) but all the mechanisms and states
  are per-link and integrate well with the rest of link abstraction
  and can work with slave and PMP links.

* Core EH has proper control of LPM state.  LPM state is reconfigured
  when and only when reconfiguration is necessary.  It makes sure that
  LPM state is reset when probing for new device on the link.
  Controller agnostic logic is now implemented in libata EH proper and
  driver implementation only has to deal with controller specifics.

* Proper error handling.  LPM config failure is attributed to the
  device on the link and LPM is disabled for the link if it fails
  repeatedly.

* ops->enable/disable_pm() are replaced with single ops->set_lpm()
  which takes @policy and @hints.  This simplifies driver specific
  implementation.
Signed-off-by: default avatarTejun Heo <tj@kernel.org>
Signed-off-by: default avatarJeff Garzik <jgarzik@redhat.com>
      6b7ae954
    • Tejun Heo's avatar
      libata: clean up lpm related symbols and sysfs show/store functions · c93b263e
      Tejun Heo authored 
      Link power management related symbols are in confusing state w/ mixed
usages of lpm, ipm and pm.  This patch cleans up lpm related symbols
and sysfs show/store functions as follows.

* lpm states - NOT_AVAILABLE, MIN_POWER, MAX_PERFORMANCE and
  MEDIUM_POWER are renamed to ATA_LPM_UNKNOWN and
  ATA_LPM_{MIN|MAX|MED}_POWER.

* Pre/postfixes are unified to lpm.

* sysfs show/store functions for link_power_management_policy were
  curiously named get/put and unnecessarily complex.  Renamed to
  show/store and simplified.
Signed-off-by: default avatarTejun Heo <tj@kernel.org>
Signed-off-by: default avatarJeff Garzik <jgarzik@redhat.com>
      c93b263e
  45. 28 Sep, 2010 1 commit
  47. 10 Sep, 2010 1 commit
  49. 25 Aug, 2010 1 commit
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