Commit Graph

203 Commits

Author SHA1 Message Date
Paul Mundt
7578a4c625 sh: Fix up multi-resource mapping for SH7786 PCIe.
This reworks some of the SH7786 PCIe initialization code to dynamically
setup and size the various resource windows, as opposed to the original
code that simply wired in a couple of them statically.

At the same time, we tidy up the initialization code a bit, kill off some
read-only register twiddling that was gleaned from the bus analyzer, and
also propagate the physical slot/channel mapping.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2010-02-10 16:00:58 +09:00
Paul Mundt
7561f2dd39 sh: Fix up SH7786 PCI resource definitions.
This adds in some of the missing memory resources for channels 1/2 and
gets the code building again for the recent changes.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2010-02-08 16:36:56 +09:00
Paul Mundt
2e18e04798 Merge branch 'sh/dmaengine'
Conflicts:
	arch/sh/drivers/dma/dma-sh.c
2010-02-08 11:34:03 +09:00
Guennadi Liakhovetski
623b4ac4bf sh: fix Transfer Size calculation in both DMA drivers
Both the original arch/sh/drivers/dma/dma-sh.c and the new SH dmaengine drivers
do not take into account bits 3:2 of the Transfer Size field in the CHCR
register, besides, bit-field defines set bit 2, but the mask only passes bits
1:0 through. TS_16BLK and TS_32BLK macros are bogus too. This patch fixes all
these issues for sh7722 and sh7724, other CPUs stay unchanged and might need to
be fixed too.

Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Acked-by: Dan Williams <dan.j.williams@intel.com>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2010-02-08 09:40:24 +09:00
Paul Mundt
3b0be1a4f2 sh: Fix an off-by-1 in SH7780 PCIC memory resource mapping.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2010-02-05 16:11:25 +09:00
Paul Mundt
9ad62ec4f7 sh: Fix up early PCI PERR/SERR IRQ handling.
This adds support for handling early PERR/SERR triggering in between
controller registration and the initial bus scan. Buggy cards end up
asserting these as soon as the M66EN scan is undertaken, resulting in
an early crash.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2010-02-03 16:46:20 +09:00
Paul Mundt
b6c58b1d98 sh: Improved multi-resource handling for SH7780 PCI.
The SH7780 PCI controller supports 3 different ranges of PCI memory in
addition to its PCI I/O window. In the case of 29-bit mode, only 2 memory
windows are supported, while in 32-bit mode all 3 are visible. This
attempts to make the resource handling completely dynamic and to permit
platforms to map in as many apertures as they can handle.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2010-02-01 20:01:50 +09:00
Paul Mundt
ef407beefb sh: Hook up ERR/PERR/SERR detection for SH7780 PCI host controllers.
These were never handled before, so implement some common infrastructure
to support them, then make use of that in the SH7780-specific code. In
practice there is little here that can not be generalized for SH4 parts,
which will be an incremental change as the 7780/7751 code is gradually
unified.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2010-02-01 16:39:46 +09:00
Paul Mundt
bcf39352eb sh: Handle PCI controller resource conflicts.
register_pci_controller() can fail, but presently is a void function.
Change this over to an int so that we can bail early before continuing on
with post-registration initialization (such as throwing the controller in
to 66MHz mode in the case of the SH7780 host controller).

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2010-02-01 13:11:25 +09:00
Paul Mundt
85b59f5bb2 sh: Enable PCI66 support for SH7780 host controller.
This adds some helper glue for scanning the bus and determining if all
of the devices are 66MHz capable or not before flipping on 66MHz mode.
This isn't quite to spec, but it's fairly consistent with what other
embedded controllers end up having to do.

Scanning code cribbed from the MIPS txx9 PCI code.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2010-02-01 13:01:42 +09:00
Paul Mundt
aee4467b5c sh: Fix up large system memory handling for SH7780 PCI.
For systems that have more than 512MB we need to set up an additional
mapping, this fixes up the rounding to the next power of two and splits
out the mapping accordingly between the two local bus mapping windows.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2010-02-01 11:33:22 +09:00
Paul Mundt
396c56a9c6 sh: Kill off broken type 1 PCI config access checks.
The host controllers only support type 1, so there's not much else to
test for. Some of the older controllers also supported type 2 accesses,
but we've never supported those, and likely never will. Beyond that, the
P1SEG test is meaningless for 32-bit mode, so rather than refactoring it,
just kill the type 1 test off completely.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2010-01-30 01:41:21 +09:00
Paul Mundt
320e68da59 sh: support PCI domains.
Newer SH parts are now commonly shipping with multiple controllers, so
we wire up PCI domain support to deal with them. Shamelessly cloned from
the MIPS implementation.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2010-01-29 22:38:13 +09:00
Paul Mundt
ac8ab54a8e sh: Bail out early on PCI resource conflicts.
Presently we just call in to request_resource() for the ioport and iomem
resources without checking for errors. This has already hidden a couple
of bugs, so add some error handling in for good measure.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2010-01-29 22:22:27 +09:00
Paul Mundt
a45635dfb0 sh: Reworked SH7780 PCI initialization.
This consolidates the PCI initialization code for all of the pci-sh7780
users, and sets up the memory window dynamically as opposed to using
hardcoded window positions.

A number of bugs were fixed at the same time, including the PIO handling
and master abort timeout settings being incorrect.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2010-01-29 22:19:04 +09:00
Paul Mundt
849593591c sh: Fix up read-only variable assignment in pcibios_align_resource().
arch/sh/drivers/pci/pci.c:167: error: assignment of read-only location '*res'

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2010-01-28 18:15:05 +09:00
Paul Mundt
9d56dd3b08 sh: Mass ctrl_in/outX to __raw_read/writeX conversion.
The old ctrl in/out routines are non-portable and unsuitable for
cross-platform use. While drivers/sh has already been sanitized, there
is still quite a lot of code that is not. This converts the arch/sh/ bits
over, which permits us to flag the routines as deprecated whilst still
building with -Werror for the architecture code, and to ensure that
future users are not added.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2010-01-26 12:58:40 +09:00
Paul Mundt
7dcaa8e8e6 sh: Generalize SH7786 PCIe support.
Previously this was only built in for Urquell boards, but the same
approach can be used on SDK7786 now that the mode pin reading is
supported, so make it generic to SH7786.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2010-01-15 19:13:56 +09:00
Paul Mundt
10ab92d8c3 sh: heartbeat: Support access size specification via resource flags.
This permits the resource access size to be handed off through the
resource flags, which saves platforms from having to establish
platform data only to specify the register width.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2010-01-15 12:08:31 +09:00
Sam Ravnborg
3252b11fc4 sh: move machtypes.h to include/generated
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Cc: Paul Mundt <lethal@linux-sh.org>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Michal Marek <mmarek@suse.cz>
2009-12-12 13:08:14 +01:00
Paul Mundt
1dca899e95 sh: dma: Kill off bogus dma_sysclass symbol export.
This is a static symbol, so the export is wholly superfluous. Recent
kbuild updates flagged this as an error, resulting in build failure,
so this tidies that up.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-11-13 12:29:19 +09:00
Paul Mundt
7693465d81 sh: Kill off superfluous arch/sh/drivers/pci/Kconfig.
Now that this contains a grand total of 1 Kconfig option, it's hardly
worth keeping split out. Roll CONFIG_PCI back in to the top-level
architecture Kconfig, along with the other bus types.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-10-27 10:36:55 +09:00
Paul Mundt
01be5d63fd sh: Revamp PCI DMA coherence Kconfig bits.
Leaving this configurable caused more trouble than it was ever worth, so
just make it explicit. Boards that are verified one way or the other can
fix up their selects accordingly. We presently default to non-coherent
for most platforms.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-10-27 10:35:02 +09:00
NeilBrown
4b3df5668c Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/djbw/async_tx into for-linus 2009-09-23 18:31:11 +10:00
Nobuhiro Iwamatsu
d8902adcc1 dmaengine: sh: Add Support SuperH DMA Engine driver
This supported all DMA channels, and it was tested in SH7722,
SH7780, SH7785 and SH7763.
This can not use with SH DMA API.

Signed-off-by: Nobuhiro Iwamatsu <iwamatsu.nobuhiro@renesas.com>
Reviewed-by: Matt Fleming <matt@console-pimps.org>
Acked-by: Maciej Sosnowski <maciej.sosnowski@intel.com>
Acked-by: Paul Mundt <lethal@linux-sh.org>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
2009-09-08 17:56:02 -07:00
David McKay
15444a8973 sh: Allow use of GENERIC_IOMAP
The synopsys PCI cell used in the later STMicro chips requires code to
be run in order to do IO cycles, rather than just memory mapping the IO
space. Rather than extending the existing SH infrastructure to allow
this, use the GENERIC_IOMAP implmentation to save re-inventing the
wheel.

This set of changes allows the SH to be built with GENERIC_IOMAP
enabled, it just ifdef's out the functions provided by the GENERIC_IOMAP
implementation, and provides a few required missing functions.

Signed-off-by: David McKay <david.mckay@st.com>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-08-24 16:10:40 +09:00
Kuninori Morimoto
24d76195d1 sh: Add SH7724 support to NR_ONCHIP_DMA_CHANNELS
This patch also update help comment

Signed-off-by: Kuninori Morimoto <morimoto.kuninori@renesas.com>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-08-19 19:28:40 +09:00
Kuninori Morimoto
e174d13010 sh: Prevent heartbeat from scribbling over non-LED bits.
While most platforms implement LED banks in sets of 8/16/32, some use
different configurations. This adds a LED mask to the heartbeat platform
data to allow platforms to constrain the bitmap, which is otherwise
derived from the register size.

Signed-off-by: Kuninori Morimoto <morimoto.kuninori@renesas.com>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-08-18 21:16:29 +09:00
Paul Mundt
5713e60210 sh: pci: Initial PCI-Express support for SH7786 Urquell board.
This adds initial support for the PCI-Express module in the SH7786,
particularly as it relates to the urquell platform. Presently it is
only supported in root complex mode, with endpoint mode still requiring
more debugging. 29/32-bit mode and lane configurations are selectable via
board mode pins, and are otherwise fixed.

Only 4x and 1x PCI channels are presently handled, the PCI bridge still
requires additional debugging and stabilization in hardware.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-06-17 18:20:48 +09:00
Paul Mundt
66765fe1b6 sh: pci: SH7786 PCI ops.
This adds in preliminary support for the SH7786 PCIe module PCI ops,
and the corresponding module definitions.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-06-16 06:26:08 +09:00
Paul Mundt
8c6b44d00a sh: pci: Allow register_pci_controller() to handle overlapping regions.
Some host controllers (such as SH7786) have overlapping regions that are
fixed in hardware. The resource allocator does the right thing in
managing this space already, so the conflict case is non-fatal.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-06-16 06:01:58 +09:00
Huang Weiyi
78c99ba1b1 sh: pci: remove duplicated #include's
Signed-off-by: Huang Weiyi <weiyi.huang@gmail.com>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-06-14 17:48:43 +09:00
Paul Mundt
5582b0648d sh: pci-sh7780: Fix up for PCI_DISABLE_MWI changes.
This fixes a build error where references to pci_cache_line_size are
undefined, as this ceases to be exported when PCI_DISABLE_MWI is enabled,
as is now the default.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-05-27 00:12:58 +09:00
Paul Mundt
d076d2bd0d sh: pci-sh7751: Initialize io_map_base in controller definition.
As there is only a single controller and remapping has no impact for the
address range in question, just initialize it directly in the controller
definition. This fixes up boot time warnings about not having the field
initialized.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-05-26 23:10:15 +09:00
Magnus Damm
3d6ad46021 sh: multiple vectors per irq - sh7760
Update intc tables and platform data to use one linux irq
per maskable interrupt source instead of keeping the one-to-one
mapping between vectors and linux irqs.

This fixes potential irq masking issues for sh7760 hardware
blocks such as DMAC/TMU2/REF.

Signed-off-by: Magnus Damm <damm@igel.co.jp>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-05-11 21:59:58 +09:00
Paul Mundt
0fb849b9d7 sh: Integrate the SH-5 onchip_remap() more coherently.
Presently this is special-cased for early initialization. While there are
situations where these static early initializations are still necessary,
with minor changes it is possible to use this for the regular ioremap
implementation as well. This allows us to kill off the special-casing for
the remap completely and to start tidying up all of the SH-5
special-casing in drivers.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-05-07 18:10:27 +09:00
Paul Mundt
cf242007a1 sh: pci: Rename pci-new.c to pci.c.
pci-new.c is now in a state to replace the old pci.c, rename it
accordingly.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-04-20 21:53:33 +09:00
Paul Mundt
35bcfffd86 sh: pci: Roll pci-lib in to pci-new.
Now that the pci-auto cruft is gone, pci-lib can go away.
Roll it back in to pci-new.c where it originally split off from.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-04-20 21:51:19 +09:00
Paul Mundt
805fcc8899 sh: pci: Kill off the last remnants of the now unused pci-auto code.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-04-20 21:46:42 +09:00
Paul Mundt
2d5efc190e sh: pci: Move the se7751 fixups in to arch/sh/drivers/pci/.
The se7751 was still doing the PCI fixups in its own board directory,
so we move it over to arch/sh/drivers/pci/ with the rest of the board
fixups. It has bitrotted significantly over the years, so will still
likely need a bit of work to bring back up to date.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-04-20 21:42:59 +09:00
Paul Mundt
951a681bda sh: pci: Convert dreamcast to new-style interface.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-04-20 21:34:36 +09:00
Paul Mundt
37c8ac361e sh: pci: Consolidate lboxre2 and r2d IRQ fixups.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-04-20 21:27:15 +09:00
Paul Mundt
84972ec0c2 sh: pci: Rename SH7751 platform ops files to fixups.
None of these contain pci_ops, only IRQ routing bits, rename them
accordingly.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-04-20 21:17:10 +09:00
Paul Mundt
757e3c16f8 sh: pci: Rewrite SH7751 PCI support to follow SH7780.
This follows the similar sort of scheme that the refactored SH7780 code
uses, using a 64MB CS3 mapping to handle the window0 case, and simply
discarding window1. This vastly simplifies the code, and allows most of
the board-specific setup to go die.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-04-20 21:11:07 +09:00
Paul Mundt
a5b0804712 sh: pci: Rename ops-cayman -> fixups-cayman.
Now that ops-cayman.c only contains IRQ routing fixups, rename it.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-04-20 20:41:45 +09:00
Paul Mundt
48e4237d96 sh: pci: Convert the SH-5 code over to the new interface.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-04-20 20:40:48 +09:00
Paul Mundt
3444f5ec49 sh: pci: Tidy up the dreamcast PCI support.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-04-20 20:22:05 +09:00
Paul Mundt
0db38cea69 sh: pci: Kill off legacy ide quirks.
These fixups seem to have bitrotted a bit since their introduction in the
2.4 days. As we never had much use for them in the first place, and
nothing is using them any more, kill them off the rest of the way.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-04-20 19:54:47 +09:00
Paul Mundt
0e75148108 sh: pci: Consolidate pcibios_setup() in pci-lib.
This wasn't really being used for anything useful, so just stub it in
pci-lib.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-04-20 19:48:48 +09:00
Paul Mundt
d556fcc101 sh: pci: Flag the dreamcast BBA as IORESOURCE_PCI_FIXED.
This isn't a real BAR, so prevent any attempts to move it, as we don't
wish to encourage a bus luck by overzealous PCI initialization code.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-04-20 19:31:20 +09:00