15 Oct, 2011
3 commits
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Acked-by: Alan Cox
Signed-off-by: Bartlomiej Zolnierkiewicz
Signed-off-by: Jeff Garzik -
Add controller type field to struct legacy_data and then use it
to merge together all ->set_piomode methods for QDI controllers.Signed-off-by: Bartlomiej Zolnierkiewicz
Signed-off-by: Jeff Garzik -
QDI65x0 controllers are fully supported by pata_legacy driver
so remove no longer needed pata_qdi driver.Leave PATA_QDI config option for compatibility reasons and teach
pata_legacy to preserve the old behavior of pata_qdi driver.Acked-by: Alan Cox
Signed-off-by: Bartlomiej Zolnierkiewicz
Signed-off-by: Jeff Garzik
24 Jul, 2011
1 commit
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Saves text by removing nearly duplicated text format strings by
creating ata__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.oSigned-off-by: Joe Perches
Signed-off-by: Jeff Garzik
13 Nov, 2010
1 commit
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pata_legacy is incorrectly testing PATA_WINBOND_VLB_MODULE instead of
CONFIG_PATA_WINBOND_VLB_MODULE. Fix it.Signed-off-by: Tejun Heo
Reported-by: "Robert P. J. Day"
Signed-off-by: Jeff Garzik
26 Aug, 2010
1 commit
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Winbond W83759A controller is fully supported by pata_legacy driver
so remove no longer needed pata_winbond driver.Leave PATA_WINBOND_VLB config option for compatibility reasons
and teach pata_legacy to preserve the old behavior of pata_winbond
driver.Signed-off-by: Bartlomiej Zolnierkiewicz
Signed-off-by: Jeff Garzik
04 Dec, 2009
3 commits
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Signed-off-by: Bartlomiej Zolnierkiewicz
Signed-off-by: Jeff Garzik -
We need to mask out the port offset from the port number
cached in ld_qdi->timing.Signed-off-by: Bartlomiej Zolnierkiewicz
Signed-off-by: Jeff Garzik -
Dual port QDI6580 has shared PIO timings for master/slave
devices so it needs to use custom ->qc_issue method.Signed-off-by: Bartlomiej Zolnierkiewicz
Signed-off-by: Jeff Garzik
06 Jun, 2009
1 commit
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The basic problem here that pata_legacy attaches the host, sees if it found
any devices and detaches it if none were found. With async probing, it's not
waiting until discovery is finished before deciding it has no devices and
trying the detach leading to this warning:ata1: PATA max PIO4 cmd 0x1f0 ctl 0x3f6 irq 14
------------[ cut here ]------------
WARNING: at drivers/ata/libata-core.c:6222 ata_host_detach+0x75/0x90()
Modules linked in:
Pid: 1, comm: swapper Not tainted 2.6.30-rc7 #1
Call Trace:
[] ? ata_host_detach+0x75/0x90
[] ? ata_host_detach+0x75/0x90
[] ? warn_slowpath_common+0x45/0x80
[] ? warn_slowpath_null+0xa/0x10
[] ? ata_host_detach+0x75/0x90
[] ? legacy_init+0x44e/0x87f
[] ? legacy_init+0x0/0x87f
[] ? _stext+0x21/0x140
[] ? proc_register+0x2f/0x190
[] ? create_proc_entry+0x5c/0xc0
[] ? register_irq_proc+0x6e/0x90
[] ? kernel_init+0x6e/0xbf
[] ? kernel_init+0x0/0xbf
[] ? kernel_thread_helper+0x7/0x10
---[ end trace ef1ee36e873ae3a0 ]---Because it detaches before the probe is complete.
One way to fix it would be to put an async_synchronize_full() before looking
for devices, which this patch does. A better way might be to separate libata
into its own domain and only wait for that.Reported-by: Mikael Pettersson
Signed-off-by: James Bottomley
Signed-off-by: Jeff Garzik
18 Apr, 2009
1 commit
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fix those errors:
drivers/ata/pata_legacy.c: In function ‘pdc_data_xfer_vlb’:
drivers/ata/pata_legacy.c:289: error: ‘ap’ undeclared (first use in this function)
drivers/ata/pata_legacy.c:289: error: (Each undeclared identifier is reported only once
drivers/ata/pata_legacy.c:289: error: for each function it appears in.)
drivers/ata/pata_legacy.c: At top level:
drivers/ata/pata_legacy.c:869: error: ‘ATA_PFLAG_PIO32_CHANGE’ undeclared here (not in a
+function)
make[2]: *** [drivers/ata/pata_legacy.o] Error 1
make[1]: *** [drivers/ata] Error 2Signed-off-by: Zhenwen Xu
Acked-by: Alan Cox
Signed-off-by: Jeff Garzik
17 Apr, 2009
2 commits
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The legacy old IDE ioctl API for this is a bit primitive so we try
and map stuff sensibly onto it.- Set PIO over DMA devices to report 32bit
- Add ability to change the PIO32 settings if the controller permits it
- Add that functionality into the sff drivers
- Add that functionality into the VLB legacy driver
- Turn on the 32bit PIO on the ninja32 and add support thereSigned-off-by: Alan Cox
Signed-off-by: Jeff Garzik -
When pata_legacy can't detect any device, it unregisters the
platform_device and fails detection. However, it forgets to detach
ata host triggering weird failures as the host later gets freed by
devres while still attached. Fix it.Signed-off-by: Tejun Heo
Reported-by: Peter Zijlstra
Signed-off-by: Jeff Garzik
25 Mar, 2009
1 commit
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No functional changes in this patch.
Signed-off-by: Erik Inge Bolsø
Signed-off-by: Jeff Garzik
26 Feb, 2009
1 commit
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These devices are generally used with ATA anyway and it seems that some
ATAPI will need us to issue the right number of words. Therefore as we
can't switch mid burst on VLB devices we should only use 32bit I/O for
suitable block sizes.Signed-off-by: Andrew Morton
Signed-off-by: Jeff Garzik
29 Dec, 2008
2 commits
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Signed-off-by: Qinghuang Feng
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There currently are the following looping constructs.
* __ata_port_for_each_link() for all available links
* ata_port_for_each_link() for edge links
* ata_link_for_each_dev() for all devices
* ata_link_for_each_dev_reverse() for all devices in reverse orderNow there's a need for looping construct which is similar to
__ata_port_for_each_link() but iterates over PMP links before the host
link. Instead of adding another one with long name, do the following
cleanup.* Implement and export ata_link_next() and ata_dev_next() which take
@mode parameter and can be used to build custom loop.
* Implement ata_for_each_link() and ata_for_each_dev() which take
looping mode explicitly.The following iteration modes are implemented.
* ATA_LITER_EDGE : loop over edge links
* ATA_LITER_HOST_FIRST : loop over all links, host link first
* ATA_LITER_PMP_FIRST : loop over all links, PMP links first* ATA_DITER_ENABLED : loop over enabled devices
* ATA_DITER_ENABLED_REVERSE : loop over enabled devices in reverse order
* ATA_DITER_ALL : loop over all devices
* ATA_DITER_ALL_REVERSE : loop over all devices in reverse orderThis change removes exlicit device enabledness checks from many loops
and makes it clear which ones are iterated over in which direction.Signed-off-by: Tejun Heo
Signed-off-by: Jeff Garzik
28 Oct, 2008
1 commit
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Signed-off-by: Jeff Garzik
15 Jul, 2008
1 commit
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drivers/ata/pata_qdi.c:142:9: warning: incorrect type in assignment (different base types)
drivers/ata/pata_qdi.c:142:9: expected unsigned int [unsigned] [usertype] pad
drivers/ata/pata_qdi.c:142:9: got restricted __le32 [usertype]
drivers/ata/pata_qdi.c:146:15: warning: cast to restricted __le32drivers/ata/pata_winbond.c:110:9: warning: incorrect type in assignment (different base types)
drivers/ata/pata_winbond.c:110:9: expected unsigned int [unsigned] [usertype] pad
drivers/ata/pata_winbond.c:110:9: got restricted __le32 [usertype]
drivers/ata/pata_winbond.c:114:15: warning: cast to restricted __le32drivers/ata/pata_legacy.c:310:9: warning: incorrect type in assignment (different base types)
drivers/ata/pata_legacy.c:310:9: expected unsigned int [unsigned] [usertype] pad
drivers/ata/pata_legacy.c:310:9: got restricted __le32 [usertype]
drivers/ata/pata_legacy.c:314:15: warning: cast to restricted __le32
drivers/ata/pata_legacy.c:752:11: warning: cast to restricted __le32
drivers/ata/pata_legacy.c:756:9: warning: incorrect type in assignment (different base types)
drivers/ata/pata_legacy.c:756:9: expected unsigned int [unsigned] [addressable] [assigned] [usertype] pad
drivers/ata/pata_legacy.c:756:9: got restricted __le32 [usertype]Signed-off-by: Harvey Harrison
Signed-off-by: Jeff Garzik
20 May, 2008
1 commit
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Use the kernel-provided clamp_val() macro.
FIT was always applied to a member of struct ata_timing (unsigned short)
and two constants. clamp_val will not cast to short anymore.Signed-off-by: Harvey Harrison
Cc: Jeff Garzik
Cc: Tejun Heo
Signed-off-by: Andrew Morton
Signed-off-by: Jeff Garzik
18 Apr, 2008
5 commits
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Add sff_ prefix to SFF specific port ops.
This rename is in preparation of separating SFF support out of libata
core layer. This patch strictly renames ops and doesn't introduce any
behavior difference.Signed-off-by: Tejun Heo
-
SFF functions have confusing names. Some have sff prefix, some have
bmdma, some std, some pci and some none. Unify the naming by...* SFF functions which are common to both BMDMA and non-BMDMA are
prefixed with ata_sff_.* SFF functions which are specific to BMDMA are prefixed with
ata_bmdma_.* SFF functions which are specific to PCI but apply to both BMDMA and
non-BMDMA are prefixed with ata_pci_sff_.* SFF functions which are specific to PCI and BMDMA are prefixed with
ata_pci_bmdma_.* Drop generic prefixes from LLD specific routines. For example,
bfin_std_dev_select -> bfin_dev_select.The following renames are noteworthy.
ata_qc_issue_prot() -> ata_sff_qc_issue()
ata_pci_default_filter() -> ata_bmdma_mode_filter()
ata_dev_try_classify() -> ata_sff_dev_classify()This rename is in preparation of separating SFF support out of libata
core layer. This patch strictly renames functions and doesn't
introduce any behavior difference.Signed-off-by: Tejun Heo
-
libata lets low level drivers build ata_port_operations table and
register it with libata core layer. This allows low level drivers
high level of flexibility but also burdens them with lots of
boilerplate entries.This becomes worse for drivers which support related similar
controllers which differ slightly. They share most of the operations
except for a few. However, the driver still needs to list all
operations for each variant. This results in large number of
duplicate entries, which is not only inefficient but also error-prone
as it becomes very difficult to tell what the actual differences are.This duplicate boilerplates all over the low level drivers also make
updating the core layer exteremely difficult and error-prone. When
compounded with multi-branched development model, it ends up
accumulating inconsistencies over time. Some of those inconsistencies
cause immediate problems and fixed. Others just remain there dormant
making maintenance increasingly difficult.To rectify the problem, this patch implements ata_port_operations
inheritance. To allow LLDs to easily re-use their own ops tables
overriding only specific methods, this patch implements poor man's
class inheritance. An ops table has ->inherits field which can be set
to any ops table as long as it doesn't create a loop. When the host
is started, the inheritance chain is followed and any operation which
isn't specified is taken from the nearest ancestor which has it
specified. This operation is called finalization and done only once
per an ops table and the LLD doesn't have to do anything special about
it other than making the ops table non-const such that libata can
update it.libata provides four base ops tables lower drivers can inherit from -
base, sata, pmp, sff and bmdma. To avoid overriding these ops
accidentaly, these ops are declared const and LLDs should always
inherit these instead of using them directly.After finalization, all the ops table are identical before and after
the patch except for setting .irq_handler to ata_interrupt in drivers
which didn't use to. The .irq_handler doesn't have any actual effect
and the field will soon be removed by later patch.* sata_sx4 is still using old style EH and currently doesn't take
advantage of ops inheritance.Signed-off-by: Tejun Heo
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libata lets low level drivers build scsi_host_template and register it
to the SCSI layer. This allows low level drivers high level of
flexibility but also burdens them with lots of boilerplate entries.This patch implements SHT initializers which can be used to initialize
all the boilerplate entries in a sht. Three variants of them are
implemented - BASE, BMDMA and NCQ - for different types of drivers.
Note that entries can be overriden by putting individual initializers
after the helper macro.All sht tables are identical before and after this patch.
Signed-off-by: Tejun Heo
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->irq_clear() is used to clear IRQ bit of a SFF controller and isn't
useful for drivers which don't use libata SFF HSM implementation.
However, it's a required callback and many drivers implement their own
noop version as placeholder. This patch implements ata_noop_irq_clear
and use it to replace those custom placeholders.Also, SFF drivers which don't support BMDMA don't need to use
ata_bmdma_irq_clear(). It becomes noop if BMDMA address isn't
initialized. Convert them to use ata_noop_irq_clear().Signed-off-by: Tejun Heo
21 Feb, 2008
1 commit
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Use ld_qdi and ld_winbond to avoid shadowing static int
variables qdi and winbond. The ld_ prefix refers to
legacy_data.drivers/ata/pata_legacy.c:777:21: warning: symbol 'qdi' shadows an earlier one
drivers/ata/pata_legacy.c:128:12: originally declared here
drivers/ata/pata_legacy.c:811:21: warning: symbol 'qdi' shadows an earlier one
drivers/ata/pata_legacy.c:128:12: originally declared here
drivers/ata/pata_legacy.c:848:21: warning: symbol 'qdi' shadows an earlier one
drivers/ata/pata_legacy.c:128:12: originally declared here
drivers/ata/pata_legacy.c:882:21: warning: symbol 'qdi' shadows an earlier one
drivers/ata/pata_legacy.c:128:12: originally declared here
drivers/ata/pata_legacy.c:1040:21: warning: symbol 'winbond' shadows an earlier one
drivers/ata/pata_legacy.c:129:12: originally declared hereSigned-off-by: Harvey Harrison
Signed-off-by: Jeff Garzik
16 Feb, 2008
1 commit
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ata_host_detach() detaches an attached port and shouldn't be called on
a port which hasn't been attached yet. pata_legacy incorrectly calls
ata_host_detach() on unattached port after initialization failure
causing oops. Fix it.Signed-off-by: Tejun Heo
Cc: Alan Cox
Cc: Ingo Molnar
Cc: Arjan van de Ven
Signed-off-by: Jeff Garzik
12 Feb, 2008
1 commit
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Signed-off-by: Alan Cox
Signed-off-by: Jeff Garzik
23 Jan, 2008
4 commits
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This puts winbond VLB in with the other ISA/VLB support and means we can
lose pata_winbond.c. With all the VLB/ISA probe in one space (and out of
the core libata) this makes legacy probing work sanely.Also switch to devm_ for resource handling on the ports post probe
Signed-off-by: Alan Cox
Signed-off-by: Jeff Garzik -
Update the legacy driver so it can handle VLB ports nicely, and has an
internal structure for nailing new ISA/VLB forms in. Anyone got an ALI14xx
and a spare day ;)Also adds an "all" parameter so you can load this driver after all the PCI
ones in a boot time kernel and tell it to grab anything ST412 compatible
even if it is an unknown PCI device. That allows libata to offer the same
"just get me a disk somehow" fallback that old IDE did.Obsoletes pata_qdi.
Signed-off-by: Alan Cox
Cc: Tejun Heo
Cc: Jeff Garzik
Signed-off-by: Andrew Morton
Signed-off-by: Jeff Garzik -
Cc: Jeff Garzik
Cc: Alan Cox
Signed-off-by: Andrew Morton
Signed-off-by: Jeff Garzik -
Depending on how many bytes are transferred as a unit, PIO data
transfer may consume more bytes than requested. Knowing how much
data is consumed is necessary to determine how much is left for
draining. This patch update ->data_xfer such that it returns the
number of consumed bytes.While at it, it also makes the following changes.
* s/adev/dev/
* use READ/WRITE constants for rw indication
* misc clean upsSigned-off-by: Tejun Heo
Signed-off-by: Jeff Garzik
16 Jan, 2008
1 commit
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In pata_legacy and pata_winbond we've got bugs - cpu_to_le16() instead
of cpu_to_le32(). Fortunately, both affected suckers are VLB, thus
l-e-only, so we might get away with that unless we hit it with slop == 3
(hadn't checked if playing with badly aligned sg could trigger that).
Still buggy... Moreover, pata_legacy, pata_winbond and pata_qdi forgot to
initialize pad on the write side of 32bit case in their ->data_xfer().
Hopefully the hardware does't care, but still, sending uninitialized
data to it...Signed-off-by: Al Viro
Signed-off-by: Jeff Garzik
13 Oct, 2007
6 commits
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Currently, port configuration reporting has the following problems.
* iomapped address is reported instead of raw address
* report contains irrelevant fields or lacks necessary fields for
non-SFF controllers.
* host->irq/irq2 are there just for reporting and hacky.This patch implements and uses ata_port_desc() and
ata_port_pbar_desc(). ata_port_desc() is almost identical to
ata_ehi_push_desc() except that it takes @ap instead of @ehi, has no
locking requirement, can only be used during host initialization and "
" is used as separator instead of ", ". ata_port_pbar_desc() is a
helper to ease reporting of a PCI BAR or an offsetted address into it.LLD pushes whatever description it wants using the above two
functions. The accumulated description is printed on host
registration after "[S/P]ATA max MAX_XFERMODE ".SFF init helpers and ata_host_activate() automatically add
descriptions for addresses and irq respectively, so only LLDs which
isn't standard SFF need to add custom descriptions. In many cases,
such controllers need to report different things anyway.Signed-off-by: Tejun Heo
Signed-off-by: Jeff Garzik -
It was always set to ata_port_disable(). Removed the hook, and replaced
the very few ap->ops->port_disable() callsites with direct calls to
ata_port_disable().Signed-off-by: Jeff Garzik
-
* ->irq_ack() is redundant to what the irq handler already
performs... chk-status + irq-clear. Furthermore, it is only
called in one place, when screaming-irq-debugging is enabled,
so we don't want to bother with a hook just for that.* ata_dummy_irq_on() is only ever used in drivers that have
no callpath reaching ->irq_on(). Remove .irq_on hook from
those drivers, and the now-unused ata_dummy_irq_on()Signed-off-by: Jeff Garzik
-
Make the following functions deal with ata_link instead of ata_port.
* ata_set_mode()
* ata_eh_autopsy() and related functions
* ata_eh_report() and related functions
* suspend/resume related functions
* ata_eh_recover() and related functionsSigned-off-by: Tejun Heo
Signed-off-by: Jeff Garzik -
Multiple links and different number of devices per link should be
considered to iterate over links and devices. This patch implements
and uses link and device iterators - ata_port_for_each_link() and
ata_link_for_each_dev() - and ata_link_max_devices().This change makes a lot of functions iterate over only possible
devices instead of from dev 0 to dev ATA_MAX_DEVICES. All such
changes have been examined and nothing should be broken.While at it, add a separating comment before device helpers to
distinguish them better from link helpers and others.Signed-off-by: Tejun Heo
Signed-off-by: Jeff Garzik -
Introduce ata_link. It abstracts PHY and sits between ata_port and
ata_device. This new level of abstraction is necessary to support
SATA Port Multiplier, which basically adds a bunch of links (PHYs) to
a ATA host port. Fields related to command execution, spd_limit and
EH are per-link and thus moved to ata_link.This patch only defines the host link. Multiple link handling will be
added later. Also, a lot of ap->link derefences are added but many of
them will be removed as each part is converted to deal directly with
ata_link instead of ata_port.This patch introduces no behavior change.
Signed-off-by: Tejun Heo
Cc: James Bottomley
Signed-off-by: Jeff Garzik
22 May, 2007
1 commit
-
Signed-off-by: Jeff Garzik