CVS log for src/sys/dev/sdmmc/sdmmc_mem.c

Up to [cvs.NetBSD.org] / src / sys / dev / sdmmc

Request diff between arbitrary revisions

Keyword substitution: kv
Default branch: MAIN

Pull up following revision(s) (requested by jmcneill in ticket #985):

	sys/dev/sdmmc/sdmmcvar.h: revision 1.37
	sys/dev/sdmmc/sdmmcreg.h: revision 1.35
	sys/dev/sdmmc/ld_sdmmc.c: revision 1.44
	sys/dev/sdmmc/sdmmc_mem.c: revision 1.76

sdmmc: Add support for SD card caches.

SD physical 6.0 specification introduced Application Performance Class 2
(A2), which adds support for drive caches and command queueing.

Add support for enabling and flushing the cache when this feature is
present.

Don't stop sd card initialization early when bus clock is already set
to the target rate.

From jmnceill@ and tested by me on beagle-v.

sdmmc: Add support for SD card caches.

SD physical 6.0 specification introduced Application Performance Class 2
(A2), which adds support for drive caches and command queueing.

Add support for enabling and flushing the cache when this feature is
present.

Pull up following revision(s) (requested by jmcneill in ticket #151):

	sys/dev/sdmmc/sdmmc_mem.c: revision 1.75

sdmmc: Only check chipset WP status for SD cards.

The sdmmc_chip_write_protect callback returns the write protect switch
status from the controller (SDWP#). This signal does not exist for eMMC;
instead, write protect is signaled using card registers (CSD). So lets
skip asking the chipset for WP status on eMMC cards for each write
request.

sdmmc: Only check chipset WP status for SD cards.

The sdmmc_chip_write_protect callback returns the write protect switch
status from the controller (SDWP#). This signal does not exist for eMMC;
instead, write protect is signaled using card registers (CSD). So lets
skip asking the chipset for WP status on eMMC cards for each write
request.

Pull up the following revisions (all via patch), requested by msaitoh
in ticket #1713:

	sys/dev/sdmmc/sdhc.c				1.110, 1.112
	sys/dev/sdmmc/sdmmc_mem.c			1.74
	sys/dev/pci/sdhc_pci.c				1.18

- Support 64bit BAR.
- Use unsigned to avoid undefined behavior in hwrite[12]() and
  sdmmc_mem_sd_switch().
- Fix typo in comment.

Pull up the followin revisions (all via patch), requested by msaitoh
in ticket #1383:

	sys/dev/sdmmc/sdhc.c				1.110, 1.112
	sys/dev/sdmmc/sdmmc_mem.c			1.74
	sys/dev/pci/sdhc_pci.c				1.18

- Support 64bit BAR.
- Use unsigned to avoid undefined behavior in hwrite[12]() and
  sdmmc_mem_sd_switch().
- Fix typo in comment.

 Use unsigned to avoid undefined behavior in sdmmc_mem_sd_switch().
Found by kUBSan.

Sync w/ HEAD.

Be less verbose normally and more when debugging.

Pull up following revision(s) (requested by mrg in ticket #1042):

	sys/dev/sdmmc/if_bwfm_sdio.c: revision 1.19
	sys/dev/sdmmc/ld_sdmmc.c: revision 1.38
	sys/dev/sdmmc/sdmmcvar.h: revision 1.35
	sys/dev/sdmmc/if_bwfm_sdio.c: revision 1.5
	sys/dev/ic/bwfm.c: revision 1.26
	sys/dev/ic/bwfm.c: revision 1.27
	sys/dev/sdmmc/if_bwfm_sdio.c: revision 1.20
	sys/dev/sdmmc/if_bwfm_sdio.c: revision 1.21
	sys/dev/sdmmc/sdmmc_io.c: revision 1.20
	sys/dev/sdmmc/sdmmc_mem.c: revision 1.72
	sys/dev/sdmmc/sdmmc.c: revision 1.40
	sys/dev/sdmmc/sdmmc_ioreg.h: revision 1.6
	sys/dev/sdmmc/if_bwfm_sdio.c: revision 1.16

Don't pass empty mbufs to the network stack.

Avoid changing signedness bit with << in sdmmc_ioreg.h
Reported by <prlw1>

If the controller doesn't support switch func (opcode 6) then skip
setting this but continue with other settings.  This allows us to use
a card, albeit at a lower speed.

Fix races in sdmmc tasks and teach ld@sdmmc to abort xfers on detach.
- Teach sdmmc_add_task to queue it only if not already queued.
- Remove now-redundant logic to avoid repeated queueing elsewhere.
- Teach sdmmc_del_task to wait until task has completed.
- Call sdmmc_del_task in various needful places.
- Replace abuse of pcq by a lock and a tailq.
  (pcq is multi-producer, _single_-consumer, but there are potentially
  multiple consumers here and really only one producer.)
- Teach ld_sdmmc to abort xfers on detach.
  (Mechanism is kinda kludgey but it'll do for now; any effort one is
  tempted to spend overhauling this should be spent overhauling sdmmc
  to support proper asynchronous commands.)
- Make sure ld_sdmmc_discard either returns failure or eventually calls
  ldenddiscard.

XXX Currently ld_sdmmc_detach aborts xfers _before_ ldbegindetach has
has committed to detaching or not.  This is currently necessary to
avoid a deadlock because ldbegindetach waits for xfers to drain --
which strikes me as wrong; ldbegindetach shouldn't wait for anything,
and should only make the decision to commit to detaching or not so
the caller can decide whether to abort xfers before we actually wait
for them in ldenddetach.

XXX pullup -- although this changes some kernel symbols (sdmmc_add_task
and sdmmc_del_task), it shouldn't affect any existing modules; the only
module that uses sdmmc is ld_sdmmc.kmod, which is `.if 0' in the build
so there shouldn't be any of them floating around.

Make this work on big endian machines

move some of the patching of callbacks and other data after
ieee80211_ifattach() but before if_deferred_start_init().
may fix panic i saw in after restarting wpa_supplicant.
from mlelstv.

only ask for SDPCMD_INTSTATUS_HMB_SW_MASK and SDPCMD_INTSTATUS_CHIPACTIVE
interrupts, not all of them.  we only ack these ones.
mostly fixes pinebookpro wifi hard hangs.  still is problematic and can
trigger interrupt storm that appears as a hard hang without NET_MPSAFE,
and a follow up, less clearly right, change will reduce that to a soft
hang of the interface that can be cleared with 'ifconfig bwfm0 down up',
and even often recovers itself now.

clear all interrupts, not just those we expect from the hostintmask.
this removes the final hard hang i have seen in pinebookpro wifi,
though one may still need to 'ifconfig bwfm0 down up' occasionally,
so we still have bugs to fix here (the hang is usually associated
with 'checksum error' from bwfm/sdio.)

Sort #includes.  Nix trailing whitespace.
No functional change intended.

If the controller doesn't support switch func (opcode 6) then skip
setting this but continue with other settings.  This allows us to use
a card, albeit at a lower speed.

Mostly merge changes from HEAD upto 20200411

Merge changes from current as of 20200406

Pull up following revision(s) (requested by mrg in ticket #717):

	sys/dev/fdt/dwcmmc_fdt.c			1.11
	sys/dev/ic/bwfm.c				1.15-1.18
	sys/dev/ic/bwfmreg.h				1.4-1.6
	sys/dev/ic/bwfmvar.h				1.4,1.5
	sys/dev/ic/dwc_mmc.c				1.21,1.22
	sys/dev/ic/dwc_mmc_reg.h			1.8,1.9,1.12,1.13
	sys/dev/pcmcia/pcmciareg.h			1.11
	sys/dev/sdmmc/if_bwfm_sdio.c			1.4,1.6-1.12
	sys/dev/sdmmc/if_bwfm_sdio.h			1.1,1.2
	sys/dev/sdmmc/sdhc.c				1.105,1.106
	sys/dev/sdmmc/sdmmc.c				1.37,1.39
	sys/dev/sdmmc/sdmmc_cis.c			1.6,1.8
	sys/dev/sdmmc/sdmmc_io.c			1.15-1.19
	sys/dev/sdmmc/sdmmc_ioreg.h			1.4,1.5
	sys/dev/sdmmc/sdmmc_mem.c			1.69-1.71
	sys/dev/sdmmc/sdmmcdevs				1.5-1.8
	sys/dev/sdmmc/sdmmcvar.h			1.31,1.33,1.34
	sys/net/if_media.h				1.66

Add Broadcom devices
 -
Fix typo
 -
add PCMCIA_CISTPL_SDIO definition.
 -
From OpenBSD:
- move event handling to workqueue
- check for save/restore capability
 -
Tag work queue as MPsafe and increase length.
 -
Juse use bpf_mtap(), the 802.11 encapsulation is handled by firmware.
 -
From OpenBSD:
- support block length per function
- add functions to read/write regions
 -
Decode (but not use) SDIO tuple in CIS.
 -
Fix locking.
 -
Add more SDIO defines (partially from version 3.0).
 -
From OpenBSD:
- All the missing pieces (firmware load, chip setup, protocol handling)
TX queue and interrupt handling via sdmmc_task.
 -
Fix locking.
 -
Fix packet parsing.
 -
Add parser for original firmware config files.
 -
tagging work queue as MPSAFE was premature. Revert.
 -
SD_IO_RW_EXTENDED is a data transfer command, so set ADTC flag instead of AC
Use correct function to verify if a task has been queued. Avoids race
that can corrupt the task queue.
 -
More register definitions.
 -
Add IFM_IEEE80211_VHT subtype, IFM_IEEE80211_11AC operating mode, and missing descriptions
 -
If firmware is connected in HT or VHT mode, report it to SIOCGIFMEDIA
 -
white space police.

Skip setting power when the voltage doesn't change.
Also increase some timeouts.
 -
Add and use sdmmc_pause to avoid long-term busy waits.
 -
Add sdio abort function.
 -
Additional error messages.
 -
Print parameters for SDIO devices.
 -
Minor cosmetics.
 -
Simplyfy sdmmc_io_set_blocklen function signature by dropping the
extra softc pointer. Aligns with OpenBSD.
 -
Missing commit for sdio abort function.
 -
More code from OpenBSD
 -
no need to splnet() when enqueing packets
 -
explicit structure padding
 -
make internal functions static
 -
also prepare for GPIO interrupts.
 -
Avoid warnings for tautological shifts as sole conditional.
 -
Follow the Linux driver an use the FDT "compatible" property to build a
filename for the nvram config file, fall back to the standard filename.
E.g.
[Caching 123 nodes and 1093 properties]
compatible              73696e6f 766f6970 2c627069 2d6d322d   "sinovoip,bpi-m2-
            0010:       7a65726f 00...... ........ ........   zero"
            0015:       616c6c77 696e6e65 722c7375 6e38692d   "allwinner,sun8i-
            0025:       68322d70 6c757300 ........ ........   h2-plus"
interrupt-parent        00000001 ........ ........ ........   ....
model                   42616e61 6e612050 69204250 492d4d32   "Banana Pi BPI-M2
            0010:       2d5a6572 6f00.... ........ ........   -Zero"
name                    00...... ........ ........ ........   ""
serial-number           30326330 30303432 65636431 36376566   02c00042ecd167ef
            0010:       00...... ........ ........ ........   .
-rw-r--r--  1 root  wheel     875 Nov  2 12:06 brcmfmac43430-sdio.AP6212.txt
lrwxr-xr-x  1 root  wheel      29 Dec 30 16:19 brcmfmac43430-sdio.sinovoip,bpi-m2-zero.txt -> brcmfmac43430-sdio.AP6212.txt
-rw-r--r--  1 root  wheel     874 Jun 30  2019 brcmfmac43430-sdio.raspberrypi,3-model-b.txt
-rw-r--r--  1 root  wheel    1864 Jun 30  2019 brcmfmac43455-sdio.raspberrypi,3-model-b-plus.txt
lrwxr-xr-x  1 root  wheel      29 Dec 30 11:24 brcmfmac43455-sdio.raspberrypi,4-model-b-plus.txt -> brcmfmac43455-sdio.raspberrypi,3-model-b-plus.txt
 -
Add product ID for Broadcom BCM43455
 -
Use correct firmware for BCM43456
 -
size check was backwards.
 -
Be less noisy for some commands.
 -
Fix DWC_MMC_INT_SDIO_INT bit
 -
dwc_mmc fixes:
 - Rockchip uses a different SDIO int bit, so take this into consideration
 - Avoid unnecessary resets and always wait for resets to complete
 - kpause instead of delay while holding spinlock
 - Do not attempt autostop for SD_IO_RW_EXTENDED commands
 - Allow for sub-blklen byte counts for single block transfers
  -
More SDIO stability and performance fixes

Be less noisy for some commands.

Whitespace police

Add and use sdmmc_pause to avoid long-term busy waits.
Add sdio abort function.
Additional error messages.
Print parameters for SDIO devices.
Minor cosmetics.

Sync with HEAD

If setting HS_TIMING fails, keep trying slower speeds instead of bailing
out.

If a mem function fails to initialize, set the error flag so sdmmc doesn't try to use it anyway.

Sync with HEAD, resolve a couple of conflicts

Wait for data ready after eMMC flush cache commands

Sync with HEAD

Resolve a couple of conflicts (result of the uimin/uimax changes)

Rename min/max -> uimin/uimax for better honesty.

These functions are defined on unsigned int.  The generic name
min/max should not silently truncate to 32 bits on 64-bit systems.
This is purely a name change -- no functional change intended.

HOWEVER!  Some subsystems have

	#define min(a, b)	((a) < (b) ? (a) : (b))
	#define max(a, b)	((a) > (b) ? (a) : (b))

even though our standard name for that is MIN/MAX.  Although these
may invite multiple evaluation bugs, these do _not_ cause integer
truncation.

To avoid `fixing' these cases, I first changed the name in libkern,
and then compile-tested every file where min/max occurred in order to
confirm that it failed -- and thus confirm that nothing shadowed
min/max -- before changing it.

I have left a handful of bootloaders that are too annoying to
compile-test, and some dead code:

cobalt ews4800mips hp300 hppa ia64 luna68k vax
acorn32/if_ie.c (not included in any kernels)
macppc/if_gm.c (superseded by gem(4))

It should be easy to fix the fallout once identified -- this way of
doing things fails safe, and the goal here, after all, is to _avoid_
silent integer truncations, not introduce them.

Maybe one day we can reintroduce min/max as type-generic things that
never silently truncate.  But we should avoid doing that for a while,
so that existing code has a chance to be detected by the compiler for
conversion to uimin/uimax without changing the semantics until we can
properly audit it all.  (Who knows, maybe in some cases integer
truncation is actually intended!)

Pull up following revision(s) (requested by bouyer in ticket #537):
	sys/dev/sdmmc/sdmmc_mem.c: revision 1.64
Fix uninitialized variable use:
if there is an error, or if we are using a SPI controller,
sdmmc_mem_send_op_cond() doens't assign a value to *ocrp,
but it is used unconditionally in sdmmc_mem_enable() to see if we can switch
to low voltage.
In sdmmc_mem_send_op_cond(), if the new ocr is not returned by the
card for whatever reason, set *ocrp to the orig value.

Fix uninitialized variable use:
if there is an error, or if we are using a SPI controller,
sdmmc_mem_send_op_cond() doens't assign a value to *ocrp,
but it is used unconditionally in sdmmc_mem_enable() to see if we can switch
to low voltage.

In sdmmc_mem_send_op_cond(), if the new ocr is not returned by the
card for whatever reason, set *ocrp to the orig value.

update from HEAD

For SD cards, send the SET_WR_BLK_ERASE_COUNT app command before a
multi-block write to improve write performance.

Pull up following revision(s) (requested by mlelstv in ticket #261):
	sys/dev/sdmmc/ld_sdmmc.c: revision 1.32
	sys/dev/sdmmc/ld_sdmmc.c: revision 1.33
	sys/dev/sdmmc/ld_sdmmc.c: revision 1.34
	sys/dev/sdmmc/sdmmc_mem.c: revision 1.62
	sys/dev/i2o/ld_iop.c: revision 1.39
	sys/dev/ld.c: revision 1.102
	sys/dev/ld.c: revision 1.103
	sys/dev/dksubr.c: revision 1.98
	sys/dev/dksubr.c: revision 1.99
	sys/dev/sdmmc/sdmmcvar.h: revision 1.29
	sys/dev/ic/ld_nvme.c: revision 1.17
	sys/dev/ldvar.h: revision 1.31
	sys/dev/ldvar.h: revision 1.32
	sys/dev/ic/ld_cac.c: revision 1.31
	sys/dev/pci/ld_virtio.c: revision 1.16
While ld(4) is MP safe, many backends are not.
Add a flag for backends that are MP safe. Take KERNEL_LOCK when calling
into a backend that doesn't have the flag set. Do the same for the
discard routine.
Fixes PR 52462.
Defer sdmmc discard operations to the sdmmc task queue. Fixes a panic
introduced by ld.c r1.102.
validate length for discard operation and split operation when byte length
doesn't fit into 'int'.
make the sc_discard interface for the ld backend asynchronous and
signal completion through new callback lddiscardend. Use a standard
struct buf to pass disk address and range instead of two off_t values.
make lddiscard synchronous again. This is a requirement of the current
ffs discard code.
Initialize error also in the case where len=0, which just succeeds.
while here, assert that the len is indeed non-negative. this is already
confirmed by sys_fdiscard, but let's be sure.
reported by: GCC, but with different compile flags

Sync with HEAD

make the sc_discard interface for the ld backend asynchronous and
signal completion through new callback lddiscardend. Use a standard
struct buf to pass disk address and range instead of two off_t values.

make lddiscard synchronous again. This is a requirement of the current
ffs discard code.

Pull up following revision(s) (requested by jmcneill in ticket #139):
	sys/arch/arm/sunxi/sunxi_mmc.c: revision 1.2
	sys/dev/sdmmc/ld_sdmmc.c: revision 1.31
	sys/dev/sdmmc/sdmmc_mem.c: revision 1.61
	sys/dev/sdmmc/sdmmcreg.h: revision 1.32
	sys/dev/sdmmc/sdmmcvar.h: revision 1.28
Add support for eMMC 4.5's optional cache feature. If a cache is present,
and the host controller reports the SMC_CAPS_POLLING capability (needed
to flush cache at shutdown), it will be automatically enabled and used.
--
Add SMC_CAPS_POLLING support.

2978427

file sdmmc_mem.c was added on branch perseant-stdc-iso10646 on 2017-07-16 17:11:47 +0000

Add support for eMMC 4.5's optional cache feature. If a cache is present,
and the host controller reports the SMC_CAPS_POLLING capability (needed
to flush cache at shutdown), it will be automatically enabled and used.

Pull up following revision(s) (requested by jmcneill in ticket #67):
	sys/dev/sdmmc/ld_sdmmc.c: 1.28
	sys/dev/sdmmc/sdmmc_mem.c: 1.58-1.60
	sys/dev/sdmmc/sdmmcreg.h: 1.30, 1.31
	sys/dev/sdmmc/sdmmcvar.h: 1.25-1.27
Add discard support to ld@sdmmc using the ERASE (CMD38) command.
--
Read SD status register and print card status when a new SD card is found:
  sdmmc0: SD card status: 4-bit, C10, U1, V10
If the SD status register reports discard support, set the DISCARD arg to
the ERASE operation to let the card know that the host doesn't care if the
erase is performed.
--
Revert part of previous; the SD card spec recommends not to issue a DISCARD
command to the file system area.

Revert part of previous; the SD card spec recommends not to issue a DISCARD
command to the file system area.

Read SD status register and print card status when a new SD card is found:

  sdmmc0: SD card status: 4-bit, C10, U1, V10

If the SD status register reports discard support, set the DISCARD arg to
the ERASE operation to let the card know that the host doesn't care if the
erase is performed.

Add discard support to ld@sdmmc using the ERASE (CMD38) command.

Pull up following revision(s) (requested by jmcneill in ticket #3):
	sys/dev/sdmmc/sdmmcvar.h: revision 1.24
	sys/dev/sdmmc/sdmmc_mem.c: revision 1.57
	sys/dev/ic/pl181.c: revision 1.4
Give a hint to controllers in the command flags if we are performing a
transfer with an SDHC capable card. If the controller needs to adjust
command args, it can use this hint to understand how it is encoded.
Re-introduce support for multi-block transfers and split transfers to fit
within the 65535-byte limit.

Give a hint to controllers in the command flags if we are performing a
transfer with an SDHC capable card. If the controller needs to adjust
command args, it can use this hint to understand how it is encoded.

Sync with HEAD

Sync with HEAD

Remove a test that prevents tuning from happening on eMMC devices.

Sync with HEAD

sdhc(4): hardware reset support for Intel eMMC controller

sdhc(4), sdmmc(4): Added MMC HS DDR52 support.

sdmmc(4): Use EXT_CSD[HS_TIMING] definitions.

Sync with HEAD

Fix incorrect sector counts with MMC.

Sync with HEAD

Call the second sdmmc_mem_send_if_cond() only where it's necessary.

This makes SMC_CAPS_SPI_MODE devices (currently evbsh3 only) work again.
"Maybe ok" from nonaka@.

Sync with HEAD (as of 26th Dec)

Be graceful about command timeouts when probing.

Add some event counters to track transfer sizes.

After setting HS_TIMING value for HS200 or later, send repeated SEND_STATUS
command until the device is no longer busy or the SWITCH_ERROR bit is set.

support hiding command timeout messages with a new command flag and use this
when probing for cards. Should fix PR 50302.

Sync with HEAD

eMMC fixes

Add support for sampling clock tuning, required for some UHS modes and
MMC HS200.

ODROID-C1 has a bug where the card is not power-cycled when the board is
reset. If you had previously switched to 1.8V signaling level, upon reboot
the card will still be in 1.8V mode and you cannot detect it with an S18R
request.

A card in 1.8V mode will report UHS modes though, so if the card reports
SDR50, DDR50, or SDR104 capabilities, and the previous S18R request failed
to switch, use this as an opportunity to re-enable UHS support in the
subsystem and host controller drivers.

instead of trying to handle cards already in 1.8V mode, request host controller to switch to 3.3V signaling before starting the init sequence

Handle cards that are already in low voltage (1.8V) mode. Test correct
bit when determining the best SD transfer mode.

clear SMF_UHS_MODE flag before enabling card

fix SDMMC_DEBUG build

Add support for DDR50 transfer modes.

use mutex locking for MP safety.

more debug output

Add support for eMMC 5.0 HS200 timings.

Add basic UHS-I support. SDR50 and SDR104 are supported, but not DDR50.

Sync with HEAD

Pull up following revision(s) (requested by nonaka in ticket #577):
	sys/dev/sdmmc/sdmmc_mem.c: revision 1.34
	sys/dev/sdmmc/sdmmcvar.h: revision 1.16
fix to simulate multi-segment dma transfer for pq3sdhc(4).

fix to simulate multi-segment dma transfer for pq3sdhc(4).

Pull up following revision(s) (requested by maxv in ticket #520):
	sys/ufs/chfs/ebh.c: revision 1.6
	sys/dev/sdmmc/sdmmc_mem.c: revision 1.33
	sys/dev/ic/aic7xxx.c: revision 1.132
	sys/fs/nfs/common/krpc_subr.c: revision 1.2
	sys/modules/lua/lua.c: revision 1.16
	sys/fs/udf/udf_subr.c: revision 1.128
	sys/ufs/chfs/chfs_scan.c: revision 1.6
	sys/dev/ic/an.c: revision 1.62

Fix six memory leaks and two inconsistencies.

Return an actual error. Reported by:
http://www.m00nbsd.net/ae123a9bae03f7dde5c6d654412daf5a.html#Report-4

Fix high capacity (> 2GB) eMMC support, from OpenBSD.

Rebase to HEAD as of a few days ago.

sync with head.

for a reference, the tree before this commit was tagged
as yamt-pagecache-tag8.

this commit was splitted into small chunks to avoid
a limitation of cvs.  ("Protocol error: too many arguments")

sync with head

Add a driver for Realtek RTS5209/RTS5229 Card Reader.
Ported from OpenBSD.

Turn a few __unused into __diagused

resync from head

Add support for the valid card types in eMMC v4.4 (needed by beaglebone
black).

Fix typo.

resync with head

sync with head

fix off-by-one in switch function argument validation.

Correctly read the 512-bit-wide big-endian Switch Function Status register.
Some of this could/will also be useful for the SD Status register.

The Card Command Class (CCC) field is valid in both SD_CSD_CSDVER_1_0
and SD_CSD_CSDVER_2_0.

Resync to 2012-11-19 00:00:00 UTC

sync with head

Fix variable name for message of printf.

Pull up revisions:
  src/sys/dev/sdmmc/sdhc.c revisions 1.16,1.20,1.21,1.22,1.23 via patch,1.25
  src/sys/dev/sdmmc/sdhcreg.h revision 1.8
  src/sys/dev/sdmmc/sdmmc_mem.c revisions 1.21,1.22
  src/sys/dev/sdmmc/sdmmcreg.h revisions 1.10,1.11,1.12
(requested by matt in ticket 441).

SDHCI byte swaps the BE response on the wire into LE registers.
As we always want response data in LE, use bus_space_read_stream.
Additonally, read response data in 1 or 4 4-byte chunks, instead of
one 4-byte chunk or 15 1-byte chunks.

bus_space_*_stream_N() functions are not universally available.
Provite alternate implementation for when they are unavailable.

Handle interrupt acknowledgement in the SDHC_FLAG_32BIT_ACCESS case in
the same way as non-SDHC_FLAG_32BIT_ACCESS case.

If there was an error in 32-bit mode, just set ERROR_INTERRUPT otherwise
see if matched anything we care about.

Add use of watermark register when PIO to an ESDHC.  After every kill or
drain of watermask words, pause a bit to give time for the fifo to recover.
Always the command response in BE byteorder.  Rewrite __bitfield to deal
with this.

Responses are actually in host order (except SCR which is return in
big endian so that's convert to host order).

Fix comments about __bitfield.

Fix a delay to a correct value.

Responses are actually in host order (except SCR which is return in
big endian so that's convert to host order).

Add use of watermark register when PIO to an ESDHC.  After every kill or
drain of watermask words, pause a bit to give time for the fifo to recover.
Always the command response in BE byteorder.  Rewrite __bitfield to deal
with this.

sync with head

merge to -current.

Use "opt_sdmmc.h" for SDMMC_DEBUG, etc.

Fix sdmmmc_mem_decode_scr for BE machines.

fix my license notice.

Sync with HEAD.

sync with head

Sync with HEAD

use MMC_CSD_CSDVER_EXT_CSD.

- Don't switch MMC high-speed timing, if host controller isn't supported.
- Only check EXT_CSD STRUCTURE version when CSD version is 3.
- initialize width at sdmmc_function_alloc().

Sync with HEAD

Don't switch SD high-speed timing, if host controller isn't supported.

Don't pull in the whole uvm(9) API to access only PAGE_SIZE and
some other constants.  These are provided by sys/param.h now.

Sync with HEAD (-D20101022).

sync with head

Support High-Speed mode.

Use DMA bounce buffer, if DMA buffer is making by multiple segments.  A lot
of host controllers do not support to two or more segments.

Print bus width and clock for feature(High speed support).

Fix build failure.
  A new variable width and value had been forgotten since r1.7.

Clean up return/error in sdmem_mem_send_scr().

Fix SCR data.

Support MMC 4,8-bit mode.
  It tested only 4bit on Marvell Sheevaplug.

Sync with POSTREAD before memcpy.

Sync with HEAD.

sync with head.

sync with head

Initialise error variable to zero. If all the if's fail it exists the function
sdmmc_init returning the then still uninitialised variable.

gcc can't know if one of the if's is bound to happen.

Detected with -DDEBUG -DDIAGNOSTIC -DKGDB - ...

Sync with HEAD.

sync to netbsd-5

file sdmmc_mem.c was added on branch matt-nb5-mips64 on 2010-04-21 00:27:52 +0000

- mention MMC SPI mode.
- support SD 4bit bus width mode.

sync with head

Pull up the following revisions(s) (requested by nonaka in ticket #1167):
	sys/dev/sdmmc/ld_sdmmc.c:	revision 1.4
	sys/dev/sdmmc/sdmmc_mem.c:	revision 1.3
	sys/dev/sdmmc/sdmmcvar.h:	revision 1.2

Always treat sector size as 512 bytes.

Always sector size is treated as 512 bytes.

Pull up the following revisions(s) (requested by jmcneill in ticket #1044):
	distrib/sets/lists/man/mi:		patch
	share/man/man4/Makefile:		patch
	sys/arch/amd64/conf/files.amd64:	1.67
	sys/arch/i386/conf/files.i386:		1.349
	sys/conf/files				1.945
	share/man/man4/sdmmc.4:			1.1-1.4
	sys/dev/sdmmc/Makefile.sdmmcdevs	1.1
	sys/dev/sdmmc/devlist2h.awk		1.1
	sys/dev/sdmmc/files.sdmmc		1.1-1.2
	sys/dev/sdmmc/ld_sdmmc.c		1.1-1.3
	sys/dev/sdmmc/sbt.c			1.1-1.2
	sys/dev/sdmmc/sdhc.c			1.1-1.3
	sys/dev/sdmmc/sdhcreg.h			1.1
	sys/dev/sdmmc/sdhcvar.h			1.1
	sys/dev/sdmmc/sdmmc.c			1.1
	sys/dev/sdmmc/sdmmc_cis.c		1.1
	sys/dev/sdmmc/sdmmc_io.c		1.1
	sys/dev/sdmmc/sdmmc_ioreg.h		1.1
	sys/dev/sdmmc/sdmmc_mem.c		1.1-1.2
	sys/dev/sdmmc/sdmmcchip.h		1.1
	sys/dev/sdmmc/sdmmcdevs			1.1
	sys/dev/sdmmc/sdmmcdevs.h		1.1-1.2
	sys/dev/sdmmc/sdmmcreg.h		1.1-1.3
	sys/dev/sdmmc/sdmmcvar.h		1.1

Add sdmmc framework

Sync with HEAD.

sync with head

file sdmmc_mem.c was added on branch netbsd-5 on 2009-10-07 15:41:13 +0000

SDHC card was able to be used.

Sync with HEAD.

Commit is split, to avoid a "too many arguments" protocol error.

sync with head.

Sync with HEAD.

file sdmmc_mem.c was added on branch jym-xensuspend on 2009-05-13 17:21:29 +0000

file sdmmc_mem.c was added on branch yamt-nfs-mp on 2009-05-04 08:13:18 +0000

file sdmmc_mem.c was added on branch nick-hppapmap on 2009-04-28 07:36:33 +0000

Added SD/MMC support from OpenBSD.
tested on i386, amd64 at current-users ML by pgoyette@.
tested on zaurus by myself.