- 30 5月, 2014 39 次提交
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由 Russell King 提交于
Move the L2 cache register saving to a more sensible location - after the cache has been enabled, and fixups have been run. We move the saving of the auxiliary control register into the ->save function as well which makes everything operate in a sane and maintainable way. Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>
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由 Russell King 提交于
This is a required property, and should always be specified. Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>
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由 Russell King 提交于
We have a mixture of different devices with different register layouts, but we group all the bits together in an opaque mess. Split them out into those which are L2C-310 specific and ones which refer to earlier devices. Provide full auxiliary control register definitions. Acked-by: NTony Lindgren <tony@atomide.com> Acked-by: NLinus Walleij <linus.walleij@linaro.org> Acked-by: NShawn Guo <shawn.guo@linaro.org> Acked-by: NStephen Warren <swarren@nvidia.com> Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>
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由 Russell King 提交于
Rather than having SoCs work around L2C erratum themselves, move them into core code. This erratum affects the double linefill feature which needs to be disabled for r3p0 to r3p1-50rel0. Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>
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由 Russell King 提交于
When Linux is running in the non-secure world, any write to a secure L2C register will generate an abort. Platforms normally have to call firmware to work around this. Provide a hook for them to intercept any L2C secure register write. l2c_write_sec() avoids writes to secure registers which are already set to the appropriate value, thus avoiding the overhead of needlessly calling into the secure monitor. Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>
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由 Russell King 提交于
Move the L2C-310 errata configuration options to arch/arm/mm/Kconfig along side the option which enables support for this device. Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>
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由 Russell King 提交于
Move the way size calculation data (base of way size) out of the switch statement into the provided initialisation data. Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>
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由 Russell King 提交于
Rather than assuming these are always 8-way, it can be decoded from the auxillary register in the same manner as L2C-210. Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>
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由 Russell King 提交于
Rather than decoding this from the ID register, store it in the l2c_init_data structure. This simplifies things some more, and allows us to better provide further details as to how we're driving the cache. We print the cache ID value anyway should we need to precisely identify the cache hardware. Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>
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由 Russell King 提交于
non-OF initialisation has never been used with any cache controller which isn't an ARM cache controller, so we can safely get rid of the old (and buggy) l2x0_*-based operations structure. This is also the last reference to: - l2x0_clean_line() - l2x0_inv_line() - l2x0_flush_line() - l2x0_flush_all() - l2x0_clean_all() - l2x0_inv_all() - l2x0_inv_range() - l2x0_clean_range() - l2x0_flush_range() - l2x0_enable() - l2x0_resume() so kill those functions too. Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>
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由 Russell King 提交于
The Broadcom L2C-310 devices use ARMs L2C-310 R2P3 or later. These require no errata workarounds, and so we can directly call the l2c210 functions from their methods. Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>
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由 Russell King 提交于
The L2C-220 is different from the L2C-210 and L2C-310 in that every operation is a background operation: this means we have to use spinlocks to protect all operations, and we have to wait for every operation to complete. Should a second operation be attempted while a previous operation is in progress, the response will be an imprecise abort. Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>
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由 Russell King 提交于
Where no errata affect the L2C-310 handlers, they are functionally equivalent to L2C-210. Re-use the L2C-210 handlers for the L2C-310 part. Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>
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由 Russell King 提交于
Implement L2C-310 erratum 588369 by overriding the invalidate range and flush range methods in the outer_cache operations structure. This allows us to sensibly contain the erratum code in one place without affecting other locations/implemetations. Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>
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由 Russell King 提交于
Implement L2C-310 erratum 727915 by overriding the flush_all method in the outer_cache operations structure. This allows us to sensibly contain the erratum code in one place without affecting other locations or implementations. Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>
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由 Russell King 提交于
Add L2C-210 specific cache operation handlers. These are tailored to the requirements of the L2C-210 cache controller, which doesn't require any workarounds. We avoid using the way operations during normal operation, which means we can avoid locking: the only time we use the way operations are during initialisation, and when disabling the cache. Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>
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由 Russell King 提交于
Move the pl310_set_debug() into the l2c-310 code area, and don't hide it with ifdefs. Rename it to l2c310_set_debug(). Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>
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由 Russell King 提交于
The l2x0 unlocking code is only called from l2x0_enable() now, so move the logic entirely into that function and simplify it. Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>
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由 Russell King 提交于
Rename the pl310 save/resume functions to have a l2c310 prefix - this is it's official name. Use a local cached copy of the l2x0_base virtual address, and also realise that many of the resume function tails are the same as the enable functions, so make a call to the enable function instead of duplicating that code. Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>
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由 Russell King 提交于
Add the save/resume code hooks to the non-OF implementations as well. There's no reason for the non-OF implementations to be any different from the OF implementations. Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>
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由 Russell King 提交于
Make one of them purely "English", and the other purely technical. Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>
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由 Russell King 提交于
Rather than putting quirk handling in __l2c_init(), move it out to a separate function which individual implementations can specify. This helps to localise the quirks to those implementations which require them. Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>
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由 Russell King 提交于
Rather than having this hacked into the OF initialiation function, we can handle this via the enable function instead. While here, clean up that code and comments a little. Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>
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由 Russell King 提交于
Avoid unnecessary writes to the auxiliary control register if the register already contains the required value. This allows us to avoid invoking the platforms secure monitor code unnecessarily. Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>
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由 Russell King 提交于
We should write the auxillary control register before unlocking: the write may be necessary to enable non-secure access to the lock registers. Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>
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由 Russell King 提交于
Providing an enable method gives L2 cache controllers a chance to do special handling at enable time. This allows us to remove a hack in l2x0_unlock() for Marvell Aurora L2 caches. Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>
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由 Russell King 提交于
Back in the mists of time, someone decided that it would be a good idea to group like functions together - so all the save functions in one place, all the resume functions in another, all the OF parsing functions some place else. This makes it difficult to get an overview on what a particular implementation is doing - grouping an implementations specific functions together makes more sense, because you can see what it's doing without the clutter of other implementations. Organise it according to implementation. Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>
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由 Russell King 提交于
There's no reason this functionality should be specific to DT, so move it into the common initialisation function. Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>
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由 Russell King 提交于
Pass the iomem address into this function so we don't have to keep accessing it from a global. Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>
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由 Russell King 提交于
Rather than having a boolean and other tricks to disable some bits of l2x0_init(), split this function into two parts: a common part shared between OF and non-OF, and the non-OF part. The common part can take a block of function pointers, and the cache ID (to cope with Aurora's DT specified ID.) Eliminate the redundant setting of l2x0_base in the OF case, moving it to the non-OF init function. This allows us to localise the OF-specific initialisation handling from the non-OF handling. Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>
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由 Russell King 提交于
The revision namespace is specific to the L2 cache part, so don't name these with generic identifiers, use a part specific identifier. Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>
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由 Russell King 提交于
cache_wait_way() is actually used to wait for a particular mask to report clear; it's not really got much to do with cache ways at all. Indeed, it gets used to wait for the C bit to clear on older caches. Rename this with a more generic function name which better reflects its purpose: l2c_wait_mask(). Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>
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由 Russell King 提交于
Provide a generic helper function for way based operations. These are always background operations, and thus have to be waited for before a new operation is commenced. This helper extracts that requirement from several locations in the code. Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>
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由 Russell King 提交于
Split the cache unlock code out of l2x0_unlock(). We want to be able to re-use this functionality later. Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>
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由 Russell King 提交于
Provide a generic function which always calls the set_debug method. This will be used later in the series as some work-arounds require that the debug register be written. Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>
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由 Russell King 提交于
Rename a few things to help distinguish their function(s): l2x0_of_data -> l2c_init_data setup -> of_parse add of_ prefix to OF specific data Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>
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由 Russell King 提交于
Remove NULL initialisers, make these all __initconst structures, and order their members in the same order as the structure declaration. Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>
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由 Russell King 提交于
Make it easier to declare L2 cache controller DT IDs by using a macro. Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>
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由 Russell King 提交于
Add WARN_ON() conditions to outer_disable() to ensure that its requirements aren't violated. Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>
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- 22 5月, 2014 1 次提交
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由 Russell King 提交于
Add some documentation to cover the outer cache functions so that their requirements can be better understood. Of particular note are the flush_all() and disable() methods which must not be called except in very specific circumstances. Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>
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