* Re: [RFC PATCH 2/3] topology: support node_numa_mem() for determining the fallback node
From: Nishanth Aravamudan @ 2014-02-18 17:28 UTC (permalink / raw)
To: Christoph Lameter
Cc: Han Pingtian, Matt Mackall, Pekka Enberg,
Linux Memory Management List, Paul Mackerras, Anton Blanchard,
David Rientjes, Joonsoo Kim, linuxppc-dev, Wanpeng Li
In-Reply-To: <alpine.DEB.2.10.1402181051560.1291@nuc>
On 18.02.2014 [10:57:09 -0600], Christoph Lameter wrote:
> On Mon, 17 Feb 2014, Joonsoo Kim wrote:
>
> > On Wed, Feb 12, 2014 at 10:51:37PM -0800, Nishanth Aravamudan wrote:
> > > Hi Joonsoo,
> > > Also, given that only ia64 and (hopefuly soon) ppc64 can set
> > > CONFIG_HAVE_MEMORYLESS_NODES, does that mean x86_64 can't have
> > > memoryless nodes present? Even with fakenuma? Just curious.
>
> x86_64 currently does not support memoryless nodes otherwise it would
> have set CONFIG_HAVE_MEMORYLESS_NODES in the kconfig. Memoryless nodes are
> a bit strange given that the NUMA paradigm is to have NUMA nodes (meaning
> memory) with processors. MEMORYLESS nodes means that we have a fake NUMA
> node without memory but just processors. Not very efficient. Not sure why
> people use these configurations.
Well, on powerpc, with the hypervisor providing the resources and the
topology, you can have cpuless and memoryless nodes. I'm not sure how
"fake" the NUMA is -- as I think since the resources are virtualized to
be one system, it's logically possible that the actual topology of the
resources can be CPUs from physical node 0 and memory from physical node
2. I would think with KVM on a sufficiently large (physically NUMA
x86_64) and loaded system, one could cause the same sort of
configuration to occur for a guest?
In any case, these configurations happen fairly often on long-running
(not rebooted) systems as LPARs are created/destroyed, resources are
DLPAR'd in and out of LPARs, etc.
> > I don't know, because I'm not expert on NUMA system :)
> > At first glance, fakenuma can't be used for testing
> > CONFIG_HAVE_MEMORYLESS_NODES. Maybe some modification is needed.
>
> Well yeah. You'd have to do some mods to enable that testing.
I might look into it, as it might have sped up testing these changes.
Thanks,
Nish
^ permalink raw reply
* Re: [RFC PATCH 2/3] topology: support node_numa_mem() for determining the fallback node
From: Nishanth Aravamudan @ 2014-02-18 17:22 UTC (permalink / raw)
To: Christoph Lameter
Cc: Han Pingtian, Matt Mackall, Pekka Enberg,
Linux Memory Management List, Paul Mackerras, Anton Blanchard,
David Rientjes, Joonsoo Kim, linuxppc-dev, Wanpeng Li
In-Reply-To: <alpine.DEB.2.10.1402121612270.8183@nuc>
On 12.02.2014 [16:16:11 -0600], Christoph Lameter wrote:
> Here is another patch with some fixes. The additional logic is only
> compiled in if CONFIG_HAVE_MEMORYLESS_NODES is set.
>
> Subject: slub: Memoryless node support
>
> Support memoryless nodes by tracking which allocations are failing.
> Allocations targeted to the nodes without memory fall back to the
> current available per cpu objects and if that is not available will
> create a new slab using the page allocator to fallback from the
> memoryless node to some other node.
>
> Signed-off-by: Christoph Lameter <cl@linux.com>
Tested-by: Nishanth Aravamudan <nacc@linux.vnet.ibm.com>
Acked-by: Nishanth Aravamudan <nacc@linux.vnet.ibm.com>
> Index: linux/mm/slub.c
> ===================================================================
> --- linux.orig/mm/slub.c 2014-02-12 16:07:48.957869570 -0600
> +++ linux/mm/slub.c 2014-02-12 16:09:22.198928260 -0600
> @@ -134,6 +134,10 @@ static inline bool kmem_cache_has_cpu_pa
> #endif
> }
>
> +#ifdef CONFIG_HAVE_MEMORYLESS_NODES
> +static nodemask_t empty_nodes;
> +#endif
> +
> /*
> * Issues still to be resolved:
> *
> @@ -1405,16 +1409,28 @@ static struct page *new_slab(struct kmem
> void *last;
> void *p;
> int order;
> + int alloc_node;
>
> BUG_ON(flags & GFP_SLAB_BUG_MASK);
>
> page = allocate_slab(s,
> flags & (GFP_RECLAIM_MASK | GFP_CONSTRAINT_MASK), node);
> - if (!page)
> + if (!page) {
> +#ifdef CONFIG_HAVE_MEMORYLESS_NODES
> + if (node != NUMA_NO_NODE)
> + node_set(node, empty_nodes);
> +#endif
> goto out;
> + }
>
> order = compound_order(page);
> - inc_slabs_node(s, page_to_nid(page), page->objects);
> + alloc_node = page_to_nid(page);
> +#ifdef CONFIG_HAVE_MEMORYLESS_NODES
> + node_clear(alloc_node, empty_nodes);
> + if (node != NUMA_NO_NODE && alloc_node != node)
> + node_set(node, empty_nodes);
> +#endif
> + inc_slabs_node(s, alloc_node, page->objects);
> memcg_bind_pages(s, order);
> page->slab_cache = s;
> __SetPageSlab(page);
> @@ -1722,7 +1738,7 @@ static void *get_partial(struct kmem_cac
> struct kmem_cache_cpu *c)
> {
> void *object;
> - int searchnode = (node == NUMA_NO_NODE) ? numa_node_id() : node;
> + int searchnode = (node == NUMA_NO_NODE) ? numa_mem_id() : node;
>
> object = get_partial_node(s, get_node(s, searchnode), c, flags);
> if (object || node != NUMA_NO_NODE)
> @@ -2117,8 +2133,19 @@ static void flush_all(struct kmem_cache
> static inline int node_match(struct page *page, int node)
> {
> #ifdef CONFIG_NUMA
> - if (!page || (node != NUMA_NO_NODE && page_to_nid(page) != node))
> + int page_node = page_to_nid(page);
> +
> + if (!page)
> return 0;
> +
> + if (node != NUMA_NO_NODE) {
> +#ifdef CONFIG_HAVE_MEMORYLESS_NODES
> + if (node_isset(node, empty_nodes))
> + return 1;
> +#endif
> + if (page_node != node)
> + return 0;
> + }
> #endif
> return 1;
> }
>
^ permalink raw reply
* Re: [RFC PATCH 2/3] topology: support node_numa_mem() for determining the fallback node
From: Christoph Lameter @ 2014-02-18 16:57 UTC (permalink / raw)
To: Joonsoo Kim
Cc: Han Pingtian, Nishanth Aravamudan, Matt Mackall, Pekka Enberg,
Linux Memory Management List, Paul Mackerras, Anton Blanchard,
David Rientjes, linuxppc-dev, Wanpeng Li
In-Reply-To: <20140217070051.GE3468@lge.com>
On Mon, 17 Feb 2014, Joonsoo Kim wrote:
> On Wed, Feb 12, 2014 at 10:51:37PM -0800, Nishanth Aravamudan wrote:
> > Hi Joonsoo,
> > Also, given that only ia64 and (hopefuly soon) ppc64 can set
> > CONFIG_HAVE_MEMORYLESS_NODES, does that mean x86_64 can't have
> > memoryless nodes present? Even with fakenuma? Just curious.
x86_64 currently does not support memoryless nodes otherwise it would
have set CONFIG_HAVE_MEMORYLESS_NODES in the kconfig. Memoryless nodes are
a bit strange given that the NUMA paradigm is to have NUMA nodes (meaning
memory) with processors. MEMORYLESS nodes means that we have a fake NUMA
node without memory but just processors. Not very efficient. Not sure why
people use these configurations.
> I don't know, because I'm not expert on NUMA system :)
> At first glance, fakenuma can't be used for testing
> CONFIG_HAVE_MEMORYLESS_NODES. Maybe some modification is needed.
Well yeah. You'd have to do some mods to enable that testing.
^ permalink raw reply
* Re: [RFC PATCH 2/3] topology: support node_numa_mem() for determining the fallback node
From: Christoph Lameter @ 2014-02-18 16:38 UTC (permalink / raw)
To: Joonsoo Kim
Cc: Han Pingtian, Nishanth Aravamudan, Matt Mackall, Pekka Enberg,
Linux Memory Management List, Paul Mackerras, Anton Blanchard,
David Rientjes, linuxppc-dev, Wanpeng Li
In-Reply-To: <20140217065257.GD3468@lge.com>
On Mon, 17 Feb 2014, Joonsoo Kim wrote:
> On Wed, Feb 12, 2014 at 04:16:11PM -0600, Christoph Lameter wrote:
> > Here is another patch with some fixes. The additional logic is only
> > compiled in if CONFIG_HAVE_MEMORYLESS_NODES is set.
> >
> > Subject: slub: Memoryless node support
> >
> > Support memoryless nodes by tracking which allocations are failing.
>
> I still don't understand why this tracking is needed.
Its an optimization to avoid calling the page allocator to figure out if
there is memory available on a particular node.
> All we need for allcation targeted to memoryless node is to fallback proper
> node, that it, numa_mem_id() node of targeted node. My previous patch
> implements it and use proper fallback node on every allocation code path.
> Why this tracking is needed? Please elaborate more on this.
Its too slow to do that on every alloc. One needs to be able to satisfy
most allocations without switching percpu slabs for optimal performance.
> > Allocations targeted to the nodes without memory fall back to the
> > current available per cpu objects and if that is not available will
> > create a new slab using the page allocator to fallback from the
> > memoryless node to some other node.
And what about the next alloc? Assuem there are N allocs from a memoryless
node this means we push back the partial slab on each alloc and then fall
back?
> > {
> > void *object;
> > - int searchnode = (node == NUMA_NO_NODE) ? numa_node_id() : node;
> > + int searchnode = (node == NUMA_NO_NODE) ? numa_mem_id() : node;
> >
> > object = get_partial_node(s, get_node(s, searchnode), c, flags);
> > if (object || node != NUMA_NO_NODE)
>
> This isn't enough.
> Consider that allcation targeted to memoryless node.
It will not common get there because of the tracking. Instead a per cpu
object will be used.
> get_partial_node() always fails even if there are some partial slab on
> memoryless node's neareast node.
Correct and that leads to a page allocator action whereupon the node will
be marked as empty.
> We should fallback to some proper node in this case, since there is no slab
> on memoryless node.
NUMA is about optimization of memory allocations. It is often *not* about
correctness but heuristics are used in many cases. F.e. see the zone
reclaim logic, zone reclaim mode, fallback scenarios in the page allocator
etc etc.
^ permalink raw reply
* [PATCH RFC 25/31] mmc: sdhci: convert sdhci_set_uhs_signaling() into a library function
From: Russell King @ 2014-02-18 15:11 UTC (permalink / raw)
To: linux-arm-kernel, linux-mmc
Cc: Barry Song, spear-devel, Stephen Warren, Anton Vorontsov,
Chris Ball, Michal Simek, Thierry Reding, Viresh Kumar, Ben Dooks,
linux-tegra, linuxppc-dev
In-Reply-To: <20140218150801.GD21483@n2100.arm.linux.org.uk>
Add sdhci_set_uhs_signaling() and always call the set_uhs_signaling
method. This avoids quirks being added into sdhci_set_uhs_signaling().
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
=-DO NOT APPLY-=
drivers/mmc/host/sdhci-acpi.c | 2 ++
drivers/mmc/host/sdhci-bcm-kona.c | 1 +
drivers/mmc/host/sdhci-bcm2835.c | 1 +
drivers/mmc/host/sdhci-cns3xxx.c | 1 +
drivers/mmc/host/sdhci-dove.c | 1 +
drivers/mmc/host/sdhci-of-arasan.c | 1 +
drivers/mmc/host/sdhci-of-esdhc.c | 1 +
drivers/mmc/host/sdhci-of-hlwd.c | 1 +
drivers/mmc/host/sdhci-pci.c | 1 +
drivers/mmc/host/sdhci-pltfm.c | 1 +
drivers/mmc/host/sdhci-pxav2.c | 1 +
drivers/mmc/host/sdhci-pxav3.c | 1 +
drivers/mmc/host/sdhci-s3c.c | 1 +
drivers/mmc/host/sdhci-sirf.c | 1 +
drivers/mmc/host/sdhci-spear.c | 1 +
drivers/mmc/host/sdhci-tegra.c | 1 +
drivers/mmc/host/sdhci.c | 42 +++++++++++++++++++++-----------------
drivers/mmc/host/sdhci.h | 1 +
18 files changed, 41 insertions(+), 19 deletions(-)
diff --git a/drivers/mmc/host/sdhci-acpi.c b/drivers/mmc/host/sdhci-acpi.c
index c20964e577e9..2ece31d88196 100644
=-DO NOT APPLY-= a/drivers/mmc/host/sdhci-acpi.c
=+DO NOT APPLY+= b/drivers/mmc/host/sdhci-acpi.c
@@ -105,6 +105,7 @@ static const struct sdhci_ops sdhci_acpi_ops_dflt = {
.enable_dma = sdhci_acpi_enable_dma,
.set_bus_width = sdhci_set_bus_width,
.reset = sdhci_reset,
=+DO NOT APPLY+= .set_uhs_signaling = sdhci_set_uhs_signaling,
};
static const struct sdhci_ops sdhci_acpi_ops_int = {
@@ -112,6 +113,7 @@ static const struct sdhci_ops sdhci_acpi_ops_int = {
.enable_dma = sdhci_acpi_enable_dma,
.set_bus_width = sdhci_set_bus_width,
.reset = sdhci_reset,
=+DO NOT APPLY+= .set_uhs_signaling = sdhci_set_uhs_signaling,
.hw_reset = sdhci_acpi_int_hw_reset,
};
diff --git a/drivers/mmc/host/sdhci-bcm-kona.c b/drivers/mmc/host/sdhci-bcm-kona.c
index 77b14b1a24bc..20096aaf14b4 100644
=-DO NOT APPLY-= a/drivers/mmc/host/sdhci-bcm-kona.c
=+DO NOT APPLY+= b/drivers/mmc/host/sdhci-bcm-kona.c
@@ -211,6 +211,7 @@ static struct sdhci_ops sdhci_bcm_kona_ops = {
.platform_send_init_74_clocks = sdhci_bcm_kona_init_74_clocks,
.set_bus_width = sdhci_set_bus_width,
.reset = sdhci_reset,
=+DO NOT APPLY+= .set_uhs_signaling = sdhci_set_uhs_signaling,
.card_event = sdhci_bcm_kona_card_event,
};
diff --git a/drivers/mmc/host/sdhci-bcm2835.c b/drivers/mmc/host/sdhci-bcm2835.c
index 74906d6008e1..46af9a439d7b 100644
=-DO NOT APPLY-= a/drivers/mmc/host/sdhci-bcm2835.c
=+DO NOT APPLY+= b/drivers/mmc/host/sdhci-bcm2835.c
@@ -136,6 +136,7 @@ static const struct sdhci_ops bcm2835_sdhci_ops = {
.get_min_clock = bcm2835_sdhci_get_min_clock,
.set_bus_width = sdhci_set_bus_width,
.reset = sdhci_reset,
=+DO NOT APPLY+= .set_uhs_signaling = sdhci_set_uhs_signaling,
};
static const struct sdhci_pltfm_data bcm2835_sdhci_pdata = {
diff --git a/drivers/mmc/host/sdhci-cns3xxx.c b/drivers/mmc/host/sdhci-cns3xxx.c
index 587d73ef33ff..14b74075589a 100644
=-DO NOT APPLY-= a/drivers/mmc/host/sdhci-cns3xxx.c
=+DO NOT APPLY+= b/drivers/mmc/host/sdhci-cns3xxx.c
@@ -81,6 +81,7 @@ static const struct sdhci_ops sdhci_cns3xxx_ops = {
.set_clock = sdhci_cns3xxx_set_clock,
.set_bus_width = sdhci_set_bus_width,
.reset = sdhci_reset,
=+DO NOT APPLY+= .set_uhs_signaling = sdhci_set_uhs_signaling,
};
static const struct sdhci_pltfm_data sdhci_cns3xxx_pdata = {
diff --git a/drivers/mmc/host/sdhci-dove.c b/drivers/mmc/host/sdhci-dove.c
index 4f4216115aed..8d6d0a293f17 100644
=-DO NOT APPLY-= a/drivers/mmc/host/sdhci-dove.c
=+DO NOT APPLY+= b/drivers/mmc/host/sdhci-dove.c
@@ -89,6 +89,7 @@ static const struct sdhci_ops sdhci_dove_ops = {
.set_clock = sdhci_set_clock,
.set_bus_width = sdhci_set_bus_width,
.reset = sdhci_reset,
=+DO NOT APPLY+= .set_uhs_signaling = sdhci_set_uhs_signaling,
};
static const struct sdhci_pltfm_data sdhci_dove_pdata = {
diff --git a/drivers/mmc/host/sdhci-of-arasan.c b/drivers/mmc/host/sdhci-of-arasan.c
index f0ee594f25d1..5bd1092310f2 100644
=-DO NOT APPLY-= a/drivers/mmc/host/sdhci-of-arasan.c
=+DO NOT APPLY+= b/drivers/mmc/host/sdhci-of-arasan.c
@@ -57,6 +57,7 @@ static struct sdhci_ops sdhci_arasan_ops = {
.get_timeout_clock = sdhci_arasan_get_timeout_clock,
.set_bus_width = sdhci_set_bus_width,
.reset = sdhci_reset,
=+DO NOT APPLY+= .set_uhs_signaling = sdhci_set_uhs_signaling,
};
static struct sdhci_pltfm_data sdhci_arasan_pdata = {
diff --git a/drivers/mmc/host/sdhci-of-esdhc.c b/drivers/mmc/host/sdhci-of-esdhc.c
index c4f8cd3f83c8..fcaeae5f55b8 100644
=-DO NOT APPLY-= a/drivers/mmc/host/sdhci-of-esdhc.c
=+DO NOT APPLY+= b/drivers/mmc/host/sdhci-of-esdhc.c
@@ -309,6 +309,7 @@ static const struct sdhci_ops sdhci_esdhc_ops = {
.adma_workaround = esdhci_of_adma_workaround,
.set_bus_width = esdhc_pltfm_set_bus_width,
.reset = sdhci_reset,
=+DO NOT APPLY+= .set_uhs_signaling = sdhci_set_uhs_signaling,
};
static const struct sdhci_pltfm_data sdhci_esdhc_pdata = {
diff --git a/drivers/mmc/host/sdhci-of-hlwd.c b/drivers/mmc/host/sdhci-of-hlwd.c
index a4a1f0f2c0a0..b341661369a2 100644
=-DO NOT APPLY-= a/drivers/mmc/host/sdhci-of-hlwd.c
=+DO NOT APPLY+= b/drivers/mmc/host/sdhci-of-hlwd.c
@@ -61,6 +61,7 @@ static const struct sdhci_ops sdhci_hlwd_ops = {
.set_clock = sdhci_set_clock,
.set_bus_width = sdhci_set_bus_width,
.reset = sdhci_reset,
=+DO NOT APPLY+= .set_uhs_signaling = sdhci_set_uhs_signaling,
};
static const struct sdhci_pltfm_data sdhci_hlwd_pdata = {
diff --git a/drivers/mmc/host/sdhci-pci.c b/drivers/mmc/host/sdhci-pci.c
index 01ee60d17b04..ba4eaf03200d 100644
=-DO NOT APPLY-= a/drivers/mmc/host/sdhci-pci.c
=+DO NOT APPLY+= b/drivers/mmc/host/sdhci-pci.c
@@ -1062,6 +1062,7 @@ static const struct sdhci_ops sdhci_pci_ops = {
.enable_dma = sdhci_pci_enable_dma,
.set_bus_width = sdhci_pci_set_bus_width,
.reset = sdhci_reset,
=+DO NOT APPLY+= .set_uhs_signaling = sdhci_set_uhs_signaling,
.hw_reset = sdhci_pci_hw_reset,
};
diff --git a/drivers/mmc/host/sdhci-pltfm.c b/drivers/mmc/host/sdhci-pltfm.c
index 1fb89f44bd58..7e834fb78f42 100644
=-DO NOT APPLY-= a/drivers/mmc/host/sdhci-pltfm.c
=+DO NOT APPLY+= b/drivers/mmc/host/sdhci-pltfm.c
@@ -48,6 +48,7 @@ static const struct sdhci_ops sdhci_pltfm_ops = {
.set_clock = sdhci_set_clock,
.set_bus_width = sdhci_set_bus_width,
.reset = sdhci_reset,
=+DO NOT APPLY+= .set_uhs_signaling = sdhci_set_uhs_signaling,
};
#ifdef CONFIG_OF
diff --git a/drivers/mmc/host/sdhci-pxav2.c b/drivers/mmc/host/sdhci-pxav2.c
index db5257bf032e..3c0f3c0a1cc8 100644
=-DO NOT APPLY-= a/drivers/mmc/host/sdhci-pxav2.c
=+DO NOT APPLY+= b/drivers/mmc/host/sdhci-pxav2.c
@@ -116,6 +116,7 @@ static const struct sdhci_ops pxav2_sdhci_ops = {
.get_max_clock = sdhci_pltfm_clk_get_max_clock,
.set_bus_width = pxav2_mmc_set_bus_width,
.reset = pxav2_reset,
=+DO NOT APPLY+= .set_uhs_signaling = sdhci_set_uhs_signaling,
};
#ifdef CONFIG_OF
diff --git a/drivers/mmc/host/sdhci-pxav3.c b/drivers/mmc/host/sdhci-pxav3.c
index 13f8552ed0b3..4c5e52fbc6ee 100644
=-DO NOT APPLY-= a/drivers/mmc/host/sdhci-pxav3.c
=+DO NOT APPLY+= b/drivers/mmc/host/sdhci-pxav3.c
@@ -174,6 +174,7 @@ static const struct sdhci_ops pxav3_sdhci_ops = {
.get_max_clock = sdhci_pltfm_clk_get_max_clock,
.set_bus_width = sdhci_set_bus_width,
.reset = pxav3_reset,
=+DO NOT APPLY+= .set_uhs_signaling = sdhci_set_uhs_signaling,
};
static struct sdhci_pltfm_data sdhci_pxav3_pdata = {
diff --git a/drivers/mmc/host/sdhci-s3c.c b/drivers/mmc/host/sdhci-s3c.c
index 63496bd62196..a633418ddcfa 100644
=-DO NOT APPLY-= a/drivers/mmc/host/sdhci-s3c.c
=+DO NOT APPLY+= b/drivers/mmc/host/sdhci-s3c.c
@@ -375,6 +375,7 @@ static struct sdhci_ops sdhci_s3c_ops = {
.get_min_clock = sdhci_s3c_get_min_clock,
.set_bus_width = sdhci_s3c_set_bus_width,
.reset = sdhci_reset,
=+DO NOT APPLY+= .set_uhs_signaling = sdhci_set_uhs_signaling,
};
static void sdhci_s3c_notify_change(struct platform_device *dev, int state)
diff --git a/drivers/mmc/host/sdhci-sirf.c b/drivers/mmc/host/sdhci-sirf.c
index 3b775348b470..17004531d089 100644
=-DO NOT APPLY-= a/drivers/mmc/host/sdhci-sirf.c
=+DO NOT APPLY+= b/drivers/mmc/host/sdhci-sirf.c
@@ -32,6 +32,7 @@ static struct sdhci_ops sdhci_sirf_ops = {
.get_max_clock = sdhci_sirf_get_max_clk,
.set_bus_width = sdhci_set_bus_width,
.reset = sdhci_reset,
=+DO NOT APPLY+= .set_uhs_signaling = sdhci_set_uhs_signaling,
};
static struct sdhci_pltfm_data sdhci_sirf_pdata = {
diff --git a/drivers/mmc/host/sdhci-spear.c b/drivers/mmc/host/sdhci-spear.c
index f365a3fc7612..94ae64d23ef3 100644
=-DO NOT APPLY-= a/drivers/mmc/host/sdhci-spear.c
=+DO NOT APPLY+= b/drivers/mmc/host/sdhci-spear.c
@@ -40,6 +40,7 @@ static const struct sdhci_ops sdhci_pltfm_ops = {
.set_clock = sdhci_set_clock,
.set_bus_width = sdhci_set_bus_width,
.reset = sdhci_reset,
=+DO NOT APPLY+= .set_uhs_signaling = sdhci_set_uhs_signaling,
};
/* gpio card detection interrupt handler */
diff --git a/drivers/mmc/host/sdhci-tegra.c b/drivers/mmc/host/sdhci-tegra.c
index a0a8b5cc3b0c..d06b6ff60432 100644
=-DO NOT APPLY-= a/drivers/mmc/host/sdhci-tegra.c
=+DO NOT APPLY+= b/drivers/mmc/host/sdhci-tegra.c
@@ -156,6 +156,7 @@ static const struct sdhci_ops tegra_sdhci_ops = {
.set_clock = sdhci_set_clock,
.set_bus_width = tegra_sdhci_set_bus_width,
.reset = tegra_sdhci_reset,
=+DO NOT APPLY+= .set_uhs_signaling = sdhci_set_uhs_signaling,
};
static const struct sdhci_pltfm_data sdhci_tegra20_pdata = {
diff --git a/drivers/mmc/host/sdhci.c b/drivers/mmc/host/sdhci.c
index 4b6ee2029604..d7e142ea55ef 100644
=-DO NOT APPLY-= a/drivers/mmc/host/sdhci.c
=+DO NOT APPLY+= b/drivers/mmc/host/sdhci.c
@@ -1404,6 +1404,28 @@ void sdhci_set_bus_width(struct sdhci_host *host, int width)
}
EXPORT_SYMBOL_GPL(sdhci_set_bus_width);
=+DO NOT APPLY+=void sdhci_set_uhs_signaling(struct sdhci_host *host, unsigned timing)
=+DO NOT APPLY+={
=+DO NOT APPLY+= u16 ctrl_2;
=+DO NOT APPLY+=
=+DO NOT APPLY+= ctrl_2 = sdhci_readw(host, SDHCI_HOST_CONTROL2);
=+DO NOT APPLY+= /* Select Bus Speed Mode for host */
=+DO NOT APPLY+= ctrl_2 &= ~SDHCI_CTRL_UHS_MASK;
=+DO NOT APPLY+= if ((timing == MMC_TIMING_MMC_HS200) ||
=+DO NOT APPLY+= (timing == MMC_TIMING_UHS_SDR104))
=+DO NOT APPLY+= ctrl_2 |= SDHCI_CTRL_UHS_SDR104;
=+DO NOT APPLY+= else if (timing == MMC_TIMING_UHS_SDR12)
=+DO NOT APPLY+= ctrl_2 |= SDHCI_CTRL_UHS_SDR12;
=+DO NOT APPLY+= else if (timing == MMC_TIMING_UHS_SDR25)
=+DO NOT APPLY+= ctrl_2 |= SDHCI_CTRL_UHS_SDR25;
=+DO NOT APPLY+= else if (timing == MMC_TIMING_UHS_SDR50)
=+DO NOT APPLY+= ctrl_2 |= SDHCI_CTRL_UHS_SDR50;
=+DO NOT APPLY+= else if (timing == MMC_TIMING_UHS_DDR50)
=+DO NOT APPLY+= ctrl_2 |= SDHCI_CTRL_UHS_DDR50;
=+DO NOT APPLY+= sdhci_writew(host, ctrl_2, SDHCI_HOST_CONTROL2);
=+DO NOT APPLY+=}
=+DO NOT APPLY+=EXPORT_SYMBOL_GPL(sdhci_set_uhs_signaling);
=+DO NOT APPLY+=
static void sdhci_do_set_ios(struct sdhci_host *host, struct mmc_ios *ios)
{
unsigned long flags;
@@ -1507,25 +1529,7 @@ static void sdhci_do_set_ios(struct sdhci_host *host, struct mmc_ios *ios)
host->ops->set_clock(host, host->clock);
}
- if (host->ops->set_uhs_signaling)
- host->ops->set_uhs_signaling(host, ios->timing);
- else {
- ctrl_2 = sdhci_readw(host, SDHCI_HOST_CONTROL2);
- /* Select Bus Speed Mode for host */
- ctrl_2 &= ~SDHCI_CTRL_UHS_MASK;
- if ((ios->timing == MMC_TIMING_MMC_HS200) ||
- (ios->timing == MMC_TIMING_UHS_SDR104))
- ctrl_2 |= SDHCI_CTRL_UHS_SDR104;
- else if (ios->timing == MMC_TIMING_UHS_SDR12)
- ctrl_2 |= SDHCI_CTRL_UHS_SDR12;
- else if (ios->timing == MMC_TIMING_UHS_SDR25)
- ctrl_2 |= SDHCI_CTRL_UHS_SDR25;
- else if (ios->timing == MMC_TIMING_UHS_SDR50)
- ctrl_2 |= SDHCI_CTRL_UHS_SDR50;
- else if (ios->timing == MMC_TIMING_UHS_DDR50)
- ctrl_2 |= SDHCI_CTRL_UHS_DDR50;
- sdhci_writew(host, ctrl_2, SDHCI_HOST_CONTROL2);
- }
=+DO NOT APPLY+= host->ops->set_uhs_signaling(host, ios->timing);
if (!(host->quirks2 & SDHCI_QUIRK2_PRESET_VALUE_BROKEN) &&
((ios->timing == MMC_TIMING_UHS_SDR12) ||
diff --git a/drivers/mmc/host/sdhci.h b/drivers/mmc/host/sdhci.h
index 3179a8053019..7a35395e5f56 100644
=-DO NOT APPLY-= a/drivers/mmc/host/sdhci.h
=+DO NOT APPLY+= b/drivers/mmc/host/sdhci.h
@@ -403,6 +403,7 @@ static inline bool sdhci_sdio_irq_enabled(struct sdhci_host *host)
void sdhci_set_clock(struct sdhci_host *host, unsigned int clock);
void sdhci_set_bus_width(struct sdhci_host *host, int width);
void sdhci_reset(struct sdhci_host *host, u8 mask);
=+DO NOT APPLY+=void sdhci_set_uhs_signaling(struct sdhci_host *host, unsigned timing);
#ifdef CONFIG_PM
extern int sdhci_suspend_host(struct sdhci_host *host);
--
1.8.3.1
^ permalink raw reply
* [PATCH RFC 19/31] mmc: sdhci: convert sdhci_set_clock() into a library function
From: Russell King @ 2014-02-18 15:10 UTC (permalink / raw)
To: linux-arm-kernel, linux-mmc
Cc: Barry Song, spear-devel, Stephen Warren, Anton Vorontsov,
Chris Ball, Michal Simek, Thierry Reding, Viresh Kumar, Ben Dooks,
linux-tegra, linuxppc-dev
In-Reply-To: <20140218150801.GD21483@n2100.arm.linux.org.uk>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
=-DO NOT APPLY-=
drivers/mmc/host/sdhci-acpi.c | 2 ++
drivers/mmc/host/sdhci-bcm-kona.c | 1 +
drivers/mmc/host/sdhci-bcm2835.c | 1 +
drivers/mmc/host/sdhci-cns3xxx.c | 3 +--
drivers/mmc/host/sdhci-dove.c | 1 +
drivers/mmc/host/sdhci-esdhc.h | 1 -
drivers/mmc/host/sdhci-of-arasan.c | 1 +
drivers/mmc/host/sdhci-of-hlwd.c | 1 +
drivers/mmc/host/sdhci-pci.c | 1 +
drivers/mmc/host/sdhci-pltfm.c | 1 +
drivers/mmc/host/sdhci-pxav2.c | 1 +
drivers/mmc/host/sdhci-pxav3.c | 1 +
drivers/mmc/host/sdhci-s3c.c | 19 ++++++++++++++-----
drivers/mmc/host/sdhci-sirf.c | 1 +
drivers/mmc/host/sdhci-spear.c | 1 +
drivers/mmc/host/sdhci-tegra.c | 1 +
drivers/mmc/host/sdhci.c | 17 ++++++-----------
drivers/mmc/host/sdhci.h | 1 +
include/linux/mmc/sdhci.h | 2 --
19 files changed, 36 insertions(+), 21 deletions(-)
diff --git a/drivers/mmc/host/sdhci-acpi.c b/drivers/mmc/host/sdhci-acpi.c
index 1ded6690be43..c20964e577e9 100644
=-DO NOT APPLY-= a/drivers/mmc/host/sdhci-acpi.c
=+DO NOT APPLY+= b/drivers/mmc/host/sdhci-acpi.c
@@ -101,12 +101,14 @@ static void sdhci_acpi_int_hw_reset(struct sdhci_host *host)
}
static const struct sdhci_ops sdhci_acpi_ops_dflt = {
=+DO NOT APPLY+= .set_clock = sdhci_set_clock,
.enable_dma = sdhci_acpi_enable_dma,
.set_bus_width = sdhci_set_bus_width,
.reset = sdhci_reset,
};
static const struct sdhci_ops sdhci_acpi_ops_int = {
=+DO NOT APPLY+= .set_clock = sdhci_set_clock,
.enable_dma = sdhci_acpi_enable_dma,
.set_bus_width = sdhci_set_bus_width,
.reset = sdhci_reset,
diff --git a/drivers/mmc/host/sdhci-bcm-kona.c b/drivers/mmc/host/sdhci-bcm-kona.c
index 4c82ecb7a71e..77b14b1a24bc 100644
=-DO NOT APPLY-= a/drivers/mmc/host/sdhci-bcm-kona.c
=+DO NOT APPLY+= b/drivers/mmc/host/sdhci-bcm-kona.c
@@ -205,6 +205,7 @@ static void sdhci_bcm_kona_init_74_clocks(struct sdhci_host *host,
}
static struct sdhci_ops sdhci_bcm_kona_ops = {
=+DO NOT APPLY+= .set_clock = sdhci_set_clock,
.get_max_clock = sdhci_bcm_kona_get_max_clk,
.get_timeout_clock = sdhci_bcm_kona_get_timeout_clock,
.platform_send_init_74_clocks = sdhci_bcm_kona_init_74_clocks,
diff --git a/drivers/mmc/host/sdhci-bcm2835.c b/drivers/mmc/host/sdhci-bcm2835.c
index 289b1c80d5fc..74906d6008e1 100644
=-DO NOT APPLY-= a/drivers/mmc/host/sdhci-bcm2835.c
=+DO NOT APPLY+= b/drivers/mmc/host/sdhci-bcm2835.c
@@ -131,6 +131,7 @@ static const struct sdhci_ops bcm2835_sdhci_ops = {
.read_l = bcm2835_sdhci_readl,
.read_w = bcm2835_sdhci_readw,
.read_b = bcm2835_sdhci_readb,
=+DO NOT APPLY+= .set_clock = sdhci_set_clock,
.get_max_clock = sdhci_pltfm_clk_get_max_clock,
.get_min_clock = bcm2835_sdhci_get_min_clock,
.set_bus_width = sdhci_set_bus_width,
diff --git a/drivers/mmc/host/sdhci-cns3xxx.c b/drivers/mmc/host/sdhci-cns3xxx.c
index 416f4a4c2e35..587d73ef33ff 100644
=-DO NOT APPLY-= a/drivers/mmc/host/sdhci-cns3xxx.c
=+DO NOT APPLY+= b/drivers/mmc/host/sdhci-cns3xxx.c
@@ -89,8 +89,7 @@ static const struct sdhci_pltfm_data sdhci_cns3xxx_pdata = {
SDHCI_QUIRK_DATA_TIMEOUT_USES_SDCLK |
SDHCI_QUIRK_INVERTED_WRITE_PROTECT |
SDHCI_QUIRK_CAP_CLOCK_BASE_BROKEN |
- SDHCI_QUIRK_BROKEN_TIMEOUT_VAL |
- SDHCI_QUIRK_NONSTANDARD_CLOCK,
=+DO NOT APPLY+= SDHCI_QUIRK_BROKEN_TIMEOUT_VAL,
};
static int sdhci_cns3xxx_probe(struct platform_device *pdev)
diff --git a/drivers/mmc/host/sdhci-dove.c b/drivers/mmc/host/sdhci-dove.c
index 4c0191bff85d..4f4216115aed 100644
=-DO NOT APPLY-= a/drivers/mmc/host/sdhci-dove.c
=+DO NOT APPLY+= b/drivers/mmc/host/sdhci-dove.c
@@ -86,6 +86,7 @@ static u32 sdhci_dove_readl(struct sdhci_host *host, int reg)
static const struct sdhci_ops sdhci_dove_ops = {
.read_w = sdhci_dove_readw,
.read_l = sdhci_dove_readl,
=+DO NOT APPLY+= .set_clock = sdhci_set_clock,
.set_bus_width = sdhci_set_bus_width,
.reset = sdhci_reset,
};
diff --git a/drivers/mmc/host/sdhci-esdhc.h b/drivers/mmc/host/sdhci-esdhc.h
index de69bddc3afc..3497cfaf683c 100644
=-DO NOT APPLY-= a/drivers/mmc/host/sdhci-esdhc.h
=+DO NOT APPLY+= b/drivers/mmc/host/sdhci-esdhc.h
@@ -20,7 +20,6 @@
#define ESDHC_DEFAULT_QUIRKS (SDHCI_QUIRK_FORCE_BLK_SZ_2048 | \
SDHCI_QUIRK_NO_BUSY_IRQ | \
- SDHCI_QUIRK_NONSTANDARD_CLOCK | \
SDHCI_QUIRK_DATA_TIMEOUT_USES_SDCLK | \
SDHCI_QUIRK_PIO_NEEDS_DELAY)
diff --git a/drivers/mmc/host/sdhci-of-arasan.c b/drivers/mmc/host/sdhci-of-arasan.c
index faef21740584..f0ee594f25d1 100644
=-DO NOT APPLY-= a/drivers/mmc/host/sdhci-of-arasan.c
=+DO NOT APPLY+= b/drivers/mmc/host/sdhci-of-arasan.c
@@ -52,6 +52,7 @@ static unsigned int sdhci_arasan_get_timeout_clock(struct sdhci_host *host)
}
static struct sdhci_ops sdhci_arasan_ops = {
=+DO NOT APPLY+= .set_clock = sdhci_set_clock,
.get_max_clock = sdhci_pltfm_clk_get_max_clock,
.get_timeout_clock = sdhci_arasan_get_timeout_clock,
.set_bus_width = sdhci_set_bus_width,
diff --git a/drivers/mmc/host/sdhci-of-hlwd.c b/drivers/mmc/host/sdhci-of-hlwd.c
index fb01958cb18e..a4a1f0f2c0a0 100644
=-DO NOT APPLY-= a/drivers/mmc/host/sdhci-of-hlwd.c
=+DO NOT APPLY+= b/drivers/mmc/host/sdhci-of-hlwd.c
@@ -58,6 +58,7 @@ static const struct sdhci_ops sdhci_hlwd_ops = {
.write_l = sdhci_hlwd_writel,
.write_w = sdhci_hlwd_writew,
.write_b = sdhci_hlwd_writeb,
=+DO NOT APPLY+= .set_clock = sdhci_set_clock,
.set_bus_width = sdhci_set_bus_width,
.reset = sdhci_reset,
};
diff --git a/drivers/mmc/host/sdhci-pci.c b/drivers/mmc/host/sdhci-pci.c
index 88a6c6b87d70..01ee60d17b04 100644
=-DO NOT APPLY-= a/drivers/mmc/host/sdhci-pci.c
=+DO NOT APPLY+= b/drivers/mmc/host/sdhci-pci.c
@@ -1058,6 +1058,7 @@ static void sdhci_pci_hw_reset(struct sdhci_host *host)
}
static const struct sdhci_ops sdhci_pci_ops = {
=+DO NOT APPLY+= .set_clock = sdhci_set_clock,
.enable_dma = sdhci_pci_enable_dma,
.set_bus_width = sdhci_pci_set_bus_width,
.reset = sdhci_reset,
diff --git a/drivers/mmc/host/sdhci-pltfm.c b/drivers/mmc/host/sdhci-pltfm.c
index bfbf467b61c7..1fb89f44bd58 100644
=-DO NOT APPLY-= a/drivers/mmc/host/sdhci-pltfm.c
=+DO NOT APPLY+= b/drivers/mmc/host/sdhci-pltfm.c
@@ -45,6 +45,7 @@ unsigned int sdhci_pltfm_clk_get_max_clock(struct sdhci_host *host)
EXPORT_SYMBOL_GPL(sdhci_pltfm_clk_get_max_clock);
static const struct sdhci_ops sdhci_pltfm_ops = {
=+DO NOT APPLY+= .set_clock = sdhci_set_clock,
.set_bus_width = sdhci_set_bus_width,
.reset = sdhci_reset,
};
diff --git a/drivers/mmc/host/sdhci-pxav2.c b/drivers/mmc/host/sdhci-pxav2.c
index 2eee0c8b88eb..db5257bf032e 100644
=-DO NOT APPLY-= a/drivers/mmc/host/sdhci-pxav2.c
=+DO NOT APPLY+= b/drivers/mmc/host/sdhci-pxav2.c
@@ -112,6 +112,7 @@ static void pxav2_mmc_set_bus_width(struct sdhci_host *host, int width)
}
static const struct sdhci_ops pxav2_sdhci_ops = {
=+DO NOT APPLY+= .set_clock = sdhci_set_clock,
.get_max_clock = sdhci_pltfm_clk_get_max_clock,
.set_bus_width = pxav2_mmc_set_bus_width,
.reset = pxav2_reset,
diff --git a/drivers/mmc/host/sdhci-pxav3.c b/drivers/mmc/host/sdhci-pxav3.c
index e6ea46c4d233..3d6b574528ea 100644
=-DO NOT APPLY-= a/drivers/mmc/host/sdhci-pxav3.c
=+DO NOT APPLY+= b/drivers/mmc/host/sdhci-pxav3.c
@@ -170,6 +170,7 @@ static int pxav3_set_uhs_signaling(struct sdhci_host *host, unsigned int uhs)
}
static const struct sdhci_ops pxav3_sdhci_ops = {
=+DO NOT APPLY+= .set_clock = sdhci_set_clock,
.set_uhs_signaling = pxav3_set_uhs_signaling,
.platform_send_init_74_clocks = pxav3_gen_init_74_clocks,
.get_max_clock = sdhci_pltfm_clk_get_max_clock,
diff --git a/drivers/mmc/host/sdhci-s3c.c b/drivers/mmc/host/sdhci-s3c.c
index 18579555a5f7..63496bd62196 100644
=-DO NOT APPLY-= a/drivers/mmc/host/sdhci-s3c.c
=+DO NOT APPLY+= b/drivers/mmc/host/sdhci-s3c.c
@@ -57,6 +57,8 @@ struct sdhci_s3c {
struct clk *clk_io;
struct clk *clk_bus[MAX_BUS_CLK];
=+DO NOT APPLY+=
=+DO NOT APPLY+= bool no_divider;
};
/**
@@ -69,6 +71,7 @@ struct sdhci_s3c {
*/
struct sdhci_s3c_drv_data {
unsigned int sdhci_quirks;
=+DO NOT APPLY+= bool no_divider;
};
static inline struct sdhci_s3c *to_s3c(struct sdhci_host *host)
@@ -153,7 +156,7 @@ static unsigned int sdhci_s3c_consider_clock(struct sdhci_s3c *ourhost,
* If controller uses a non-standard clock division, find the best clock
* speed possible with selected clock source and skip the division.
*/
- if (ourhost->host->quirks & SDHCI_QUIRK_NONSTANDARD_CLOCK) {
=+DO NOT APPLY+= if (ourhost->no_divider) {
rate = clk_round_rate(clksrc, wanted);
return wanted - rate;
}
@@ -191,8 +194,10 @@ static void sdhci_s3c_set_clock(struct sdhci_host *host, unsigned int clock)
host->mmc->actual_clock = 0;
/* don't bother if the clock is going off. */
- if (clock == 0)
=+DO NOT APPLY+= if (clock == 0) {
=+DO NOT APPLY+= sdhci_set_clock(host, clock);
return;
=+DO NOT APPLY+= }
for (src = 0; src < MAX_BUS_CLK; src++) {
delta = sdhci_s3c_consider_clock(ourhost, src, clock);
@@ -242,6 +247,8 @@ static void sdhci_s3c_set_clock(struct sdhci_host *host, unsigned int clock)
if (clock < 25 * 1000000)
ctrl |= (S3C_SDHCI_CTRL3_FCSEL3 | S3C_SDHCI_CTRL3_FCSEL2);
writel(ctrl, host->ioaddr + S3C_SDHCI_CONTROL3);
=+DO NOT APPLY+=
=+DO NOT APPLY+= sdhci_set_clock(host, clock);
}
/**
@@ -617,8 +624,10 @@ static int sdhci_s3c_probe(struct platform_device *pdev)
/* Setup quirks for the controller */
host->quirks |= SDHCI_QUIRK_NO_ENDATTR_IN_NOPDESC;
host->quirks |= SDHCI_QUIRK_NO_HISPD_BIT;
- if (drv_data)
=+DO NOT APPLY+= if (drv_data) {
host->quirks |= drv_data->sdhci_quirks;
=+DO NOT APPLY+= sc->no_divider = drv_data->no_divider;
=+DO NOT APPLY+= }
#ifndef CONFIG_MMC_SDHCI_S3C_DMA
@@ -667,7 +676,7 @@ static int sdhci_s3c_probe(struct platform_device *pdev)
* If controller does not have internal clock divider,
* we can use overriding functions instead of default.
*/
- if (host->quirks & SDHCI_QUIRK_NONSTANDARD_CLOCK) {
=+DO NOT APPLY+= if (sc->no_divider) {
sdhci_s3c_ops.set_clock = sdhci_cmu_set_clock;
sdhci_s3c_ops.get_min_clock = sdhci_cmu_get_min_clock;
sdhci_s3c_ops.get_max_clock = sdhci_cmu_get_max_clock;
@@ -813,7 +822,7 @@ static const struct dev_pm_ops sdhci_s3c_pmops = {
#if defined(CONFIG_CPU_EXYNOS4210) || defined(CONFIG_SOC_EXYNOS4212)
static struct sdhci_s3c_drv_data exynos4_sdhci_drv_data = {
- .sdhci_quirks = SDHCI_QUIRK_NONSTANDARD_CLOCK,
=+DO NOT APPLY+= .no_divider = true,
};
#define EXYNOS4_SDHCI_DRV_DATA ((kernel_ulong_t)&exynos4_sdhci_drv_data)
#else
diff --git a/drivers/mmc/host/sdhci-sirf.c b/drivers/mmc/host/sdhci-sirf.c
index 5d79e10e1ba2..3b775348b470 100644
=-DO NOT APPLY-= a/drivers/mmc/host/sdhci-sirf.c
=+DO NOT APPLY+= b/drivers/mmc/host/sdhci-sirf.c
@@ -28,6 +28,7 @@ static unsigned int sdhci_sirf_get_max_clk(struct sdhci_host *host)
}
static struct sdhci_ops sdhci_sirf_ops = {
=+DO NOT APPLY+= .set_clock = sdhci_set_clock,
.get_max_clock = sdhci_sirf_get_max_clk,
.set_bus_width = sdhci_set_bus_width,
.reset = sdhci_reset,
diff --git a/drivers/mmc/host/sdhci-spear.c b/drivers/mmc/host/sdhci-spear.c
index ef990974a522..f365a3fc7612 100644
=-DO NOT APPLY-= a/drivers/mmc/host/sdhci-spear.c
=+DO NOT APPLY+= b/drivers/mmc/host/sdhci-spear.c
@@ -37,6 +37,7 @@ struct spear_sdhci {
/* sdhci ops */
static const struct sdhci_ops sdhci_pltfm_ops = {
=+DO NOT APPLY+= .set_clock = sdhci_set_clock,
.set_bus_width = sdhci_set_bus_width,
.reset = sdhci_reset,
};
diff --git a/drivers/mmc/host/sdhci-tegra.c b/drivers/mmc/host/sdhci-tegra.c
index 7754c0319fda..a0a8b5cc3b0c 100644
=-DO NOT APPLY-= a/drivers/mmc/host/sdhci-tegra.c
=+DO NOT APPLY+= b/drivers/mmc/host/sdhci-tegra.c
@@ -153,6 +153,7 @@ static const struct sdhci_ops tegra_sdhci_ops = {
.read_l = tegra_sdhci_readl,
.read_w = tegra_sdhci_readw,
.write_l = tegra_sdhci_writel,
=+DO NOT APPLY+= .set_clock = sdhci_set_clock,
.set_bus_width = tegra_sdhci_set_bus_width,
.reset = tegra_sdhci_reset,
};
diff --git a/drivers/mmc/host/sdhci.c b/drivers/mmc/host/sdhci.c
index c370e6bd7ecd..ddd57bc235ab 100644
=-DO NOT APPLY-= a/drivers/mmc/host/sdhci.c
=+DO NOT APPLY+= b/drivers/mmc/host/sdhci.c
@@ -1112,19 +1112,13 @@ static u16 sdhci_get_preset_value(struct sdhci_host *host)
return preset;
}
-static void sdhci_set_clock(struct sdhci_host *host, unsigned int clock)
=+DO NOT APPLY+=void sdhci_set_clock(struct sdhci_host *host, unsigned int clock)
{
int div = 0; /* Initialized for compiler warning */
int real_div = div, clk_mul = 1;
u16 clk = 0;
unsigned long timeout;
- if (host->ops->set_clock) {
- host->ops->set_clock(host, clock);
- if (host->quirks & SDHCI_QUIRK_NONSTANDARD_CLOCK)
- return;
- }
-
host->mmc->actual_clock = 0;
sdhci_writew(host, 0, SDHCI_CLOCK_CONTROL);
@@ -1221,6 +1215,7 @@ static void sdhci_set_clock(struct sdhci_host *host, unsigned int clock)
clk |= SDHCI_CLOCK_CARD_EN;
sdhci_writew(host, clk, SDHCI_CLOCK_CONTROL);
}
=+DO NOT APPLY+=EXPORT_SYMBOL_GPL(sdhci_set_clock);
static int sdhci_set_power(struct sdhci_host *host, unsigned short power)
{
@@ -1439,7 +1434,7 @@ static void sdhci_do_set_ios(struct sdhci_host *host, struct mmc_ios *ios)
sdhci_enable_preset_value(host, false);
if (!ios->clock || ios->clock != host->clock) {
- sdhci_set_clock(host, ios->clock);
=+DO NOT APPLY+= host->ops->set_clock(host, ios->clock);
host->clock = ios->clock;
}
@@ -1509,7 +1504,7 @@ static void sdhci_do_set_ios(struct sdhci_host *host, struct mmc_ios *ios)
sdhci_writeb(host, ctrl, SDHCI_HOST_CONTROL);
/* Re-enable SD Clock */
- sdhci_set_clock(host, host->clock);
=+DO NOT APPLY+= host->ops->set_clock(host, host->clock);
}
@@ -1553,7 +1548,7 @@ static void sdhci_do_set_ios(struct sdhci_host *host, struct mmc_ios *ios)
}
/* Re-enable SD Clock */
- sdhci_set_clock(host, host->clock);
=+DO NOT APPLY+= host->ops->set_clock(host, host->clock);
} else
sdhci_writeb(host, ctrl, SDHCI_HOST_CONTROL);
@@ -2125,7 +2120,7 @@ static void sdhci_tasklet_finish(unsigned long param)
/* Some controllers need this kick or reset won't work here */
if (host->quirks & SDHCI_QUIRK_CLOCK_BEFORE_RESET)
/* This is to force an update */
- sdhci_set_clock(host, host->clock);
=+DO NOT APPLY+= host->ops->set_clock(host, host->clock);
/* Spec says we should do both at the same time, but Ricoh
controllers do not like that. */
diff --git a/drivers/mmc/host/sdhci.h b/drivers/mmc/host/sdhci.h
index 7d84cb3b0e00..ac20195f667b 100644
=-DO NOT APPLY-= a/drivers/mmc/host/sdhci.h
=+DO NOT APPLY+= b/drivers/mmc/host/sdhci.h
@@ -400,6 +400,7 @@ static inline bool sdhci_sdio_irq_enabled(struct sdhci_host *host)
return !!(host->flags & SDHCI_SDIO_IRQ_ENABLED);
}
=+DO NOT APPLY+=void sdhci_set_clock(struct sdhci_host *host, unsigned int clock);
void sdhci_set_bus_width(struct sdhci_host *host, int width);
void sdhci_reset(struct sdhci_host *host, u8 mask);
diff --git a/include/linux/mmc/sdhci.h b/include/linux/mmc/sdhci.h
index 801579313789..20daa39e3a68 100644
=-DO NOT APPLY-= a/include/linux/mmc/sdhci.h
=+DO NOT APPLY+= b/include/linux/mmc/sdhci.h
@@ -57,8 +57,6 @@ struct sdhci_host {
#define SDHCI_QUIRK_BROKEN_CARD_DETECTION (1<<15)
/* Controller reports inverted write-protect state */
#define SDHCI_QUIRK_INVERTED_WRITE_PROTECT (1<<16)
-/* Controller has nonstandard clock management */
-#define SDHCI_QUIRK_NONSTANDARD_CLOCK (1<<17)
/* Controller does not like fast PIO transfers */
#define SDHCI_QUIRK_PIO_NEEDS_DELAY (1<<18)
/* Controller has to be forced to use block size of 2048 bytes */
--
1.8.3.1
^ permalink raw reply
* [PATCH RFC 12/31] mmc: sdhci: convert reset into a library function
From: Russell King @ 2014-02-18 15:10 UTC (permalink / raw)
To: linux-arm-kernel, linux-mmc
Cc: Barry Song, spear-devel, Stephen Warren, Anton Vorontsov,
Chris Ball, Michal Simek, Thierry Reding, Viresh Kumar, Ben Dooks,
linux-tegra, linuxppc-dev
In-Reply-To: <20140218150801.GD21483@n2100.arm.linux.org.uk>
Rather than having platform_reset_enter/platform_reset_exit methods,
turn the core of the reset handling into a library function which
platforms can call at the appropriate moment in their (new) reset
method.
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
=-DO NOT APPLY-=
drivers/mmc/host/sdhci-acpi.c | 2 ++
drivers/mmc/host/sdhci-bcm-kona.c | 1 +
drivers/mmc/host/sdhci-bcm2835.c | 1 +
drivers/mmc/host/sdhci-cns3xxx.c | 1 +
drivers/mmc/host/sdhci-dove.c | 1 +
drivers/mmc/host/sdhci-esdhc-imx.c | 1 +
drivers/mmc/host/sdhci-of-arasan.c | 1 +
drivers/mmc/host/sdhci-of-esdhc.c | 1 +
drivers/mmc/host/sdhci-of-hlwd.c | 1 +
drivers/mmc/host/sdhci-pci.c | 1 +
drivers/mmc/host/sdhci-pltfm.c | 1 +
drivers/mmc/host/sdhci-pxav2.c | 6 +++--
drivers/mmc/host/sdhci-pxav3.c | 6 +++--
drivers/mmc/host/sdhci-s3c.c | 1 +
drivers/mmc/host/sdhci-sirf.c | 1 +
drivers/mmc/host/sdhci-spear.c | 1 +
drivers/mmc/host/sdhci-tegra.c | 6 +++--
drivers/mmc/host/sdhci.c | 47 +++++++++++++++++++-------------------
drivers/mmc/host/sdhci.h | 4 ++--
19 files changed, 53 insertions(+), 31 deletions(-)
diff --git a/drivers/mmc/host/sdhci-acpi.c b/drivers/mmc/host/sdhci-acpi.c
index b138bfdd3843..1ded6690be43 100644
=-DO NOT APPLY-= a/drivers/mmc/host/sdhci-acpi.c
=+DO NOT APPLY+= b/drivers/mmc/host/sdhci-acpi.c
@@ -103,11 +103,13 @@ static void sdhci_acpi_int_hw_reset(struct sdhci_host *host)
static const struct sdhci_ops sdhci_acpi_ops_dflt = {
.enable_dma = sdhci_acpi_enable_dma,
.set_bus_width = sdhci_set_bus_width,
=+DO NOT APPLY+= .reset = sdhci_reset,
};
static const struct sdhci_ops sdhci_acpi_ops_int = {
.enable_dma = sdhci_acpi_enable_dma,
.set_bus_width = sdhci_set_bus_width,
=+DO NOT APPLY+= .reset = sdhci_reset,
.hw_reset = sdhci_acpi_int_hw_reset,
};
diff --git a/drivers/mmc/host/sdhci-bcm-kona.c b/drivers/mmc/host/sdhci-bcm-kona.c
index bf851a6e4e8e..4c82ecb7a71e 100644
=-DO NOT APPLY-= a/drivers/mmc/host/sdhci-bcm-kona.c
=+DO NOT APPLY+= b/drivers/mmc/host/sdhci-bcm-kona.c
@@ -209,6 +209,7 @@ static struct sdhci_ops sdhci_bcm_kona_ops = {
.get_timeout_clock = sdhci_bcm_kona_get_timeout_clock,
.platform_send_init_74_clocks = sdhci_bcm_kona_init_74_clocks,
.set_bus_width = sdhci_set_bus_width,
=+DO NOT APPLY+= .reset = sdhci_reset,
.card_event = sdhci_bcm_kona_card_event,
};
diff --git a/drivers/mmc/host/sdhci-bcm2835.c b/drivers/mmc/host/sdhci-bcm2835.c
index 7ab69af979b4..289b1c80d5fc 100644
=-DO NOT APPLY-= a/drivers/mmc/host/sdhci-bcm2835.c
=+DO NOT APPLY+= b/drivers/mmc/host/sdhci-bcm2835.c
@@ -134,6 +134,7 @@ static const struct sdhci_ops bcm2835_sdhci_ops = {
.get_max_clock = sdhci_pltfm_clk_get_max_clock,
.get_min_clock = bcm2835_sdhci_get_min_clock,
.set_bus_width = sdhci_set_bus_width,
=+DO NOT APPLY+= .reset = sdhci_reset,
};
static const struct sdhci_pltfm_data bcm2835_sdhci_pdata = {
diff --git a/drivers/mmc/host/sdhci-cns3xxx.c b/drivers/mmc/host/sdhci-cns3xxx.c
index 5e0cc9c47887..87af66bb1ea8 100644
=-DO NOT APPLY-= a/drivers/mmc/host/sdhci-cns3xxx.c
=+DO NOT APPLY+= b/drivers/mmc/host/sdhci-cns3xxx.c
@@ -83,6 +83,7 @@ static const struct sdhci_ops sdhci_cns3xxx_ops = {
.get_max_clock = sdhci_cns3xxx_get_max_clk,
.set_clock = sdhci_cns3xxx_set_clock,
.set_bus_width = sdhci_set_bus_width,
=+DO NOT APPLY+= .reset = sdhci_reset,
};
static const struct sdhci_pltfm_data sdhci_cns3xxx_pdata = {
diff --git a/drivers/mmc/host/sdhci-dove.c b/drivers/mmc/host/sdhci-dove.c
index 7eef4890fd22..4c0191bff85d 100644
=-DO NOT APPLY-= a/drivers/mmc/host/sdhci-dove.c
=+DO NOT APPLY+= b/drivers/mmc/host/sdhci-dove.c
@@ -87,6 +87,7 @@ static const struct sdhci_ops sdhci_dove_ops = {
.read_w = sdhci_dove_readw,
.read_l = sdhci_dove_readl,
.set_bus_width = sdhci_set_bus_width,
=+DO NOT APPLY+= .reset = sdhci_reset,
};
static const struct sdhci_pltfm_data sdhci_dove_pdata = {
diff --git a/drivers/mmc/host/sdhci-esdhc-imx.c b/drivers/mmc/host/sdhci-esdhc-imx.c
index 568239d84cbe..b1d74fa33c5f 100644
=-DO NOT APPLY-= a/drivers/mmc/host/sdhci-esdhc-imx.c
=+DO NOT APPLY+= b/drivers/mmc/host/sdhci-esdhc-imx.c
@@ -888,6 +888,7 @@ static struct sdhci_ops sdhci_esdhc_ops = {
.get_ro = esdhc_pltfm_get_ro,
.set_bus_width = esdhc_pltfm_set_bus_width,
.set_uhs_signaling = esdhc_set_uhs_signaling,
=+DO NOT APPLY+= .reset = sdhci_reset,
};
static const struct sdhci_pltfm_data sdhci_esdhc_imx_pdata = {
diff --git a/drivers/mmc/host/sdhci-of-arasan.c b/drivers/mmc/host/sdhci-of-arasan.c
index 9bb1dd263a45..faef21740584 100644
=-DO NOT APPLY-= a/drivers/mmc/host/sdhci-of-arasan.c
=+DO NOT APPLY+= b/drivers/mmc/host/sdhci-of-arasan.c
@@ -55,6 +55,7 @@ static struct sdhci_ops sdhci_arasan_ops = {
.get_max_clock = sdhci_pltfm_clk_get_max_clock,
.get_timeout_clock = sdhci_arasan_get_timeout_clock,
.set_bus_width = sdhci_set_bus_width,
=+DO NOT APPLY+= .reset = sdhci_reset,
};
static struct sdhci_pltfm_data sdhci_arasan_pdata = {
diff --git a/drivers/mmc/host/sdhci-of-esdhc.c b/drivers/mmc/host/sdhci-of-esdhc.c
index 86b8326e77c3..4530f9957f20 100644
=-DO NOT APPLY-= a/drivers/mmc/host/sdhci-of-esdhc.c
=+DO NOT APPLY+= b/drivers/mmc/host/sdhci-of-esdhc.c
@@ -309,6 +309,7 @@ static const struct sdhci_ops sdhci_esdhc_ops = {
#endif
.adma_workaround = esdhci_of_adma_workaround,
.set_bus_width = esdhc_pltfm_set_bus_width,
=+DO NOT APPLY+= .reset = sdhci_reset,
};
static const struct sdhci_pltfm_data sdhci_esdhc_pdata = {
diff --git a/drivers/mmc/host/sdhci-of-hlwd.c b/drivers/mmc/host/sdhci-of-hlwd.c
index 4d5d0015e392..fb01958cb18e 100644
=-DO NOT APPLY-= a/drivers/mmc/host/sdhci-of-hlwd.c
=+DO NOT APPLY+= b/drivers/mmc/host/sdhci-of-hlwd.c
@@ -59,6 +59,7 @@ static const struct sdhci_ops sdhci_hlwd_ops = {
.write_w = sdhci_hlwd_writew,
.write_b = sdhci_hlwd_writeb,
.set_bus_width = sdhci_set_bus_width,
=+DO NOT APPLY+= .reset = sdhci_reset,
};
static const struct sdhci_pltfm_data sdhci_hlwd_pdata = {
diff --git a/drivers/mmc/host/sdhci-pci.c b/drivers/mmc/host/sdhci-pci.c
index 59cc938b450d..88a6c6b87d70 100644
=-DO NOT APPLY-= a/drivers/mmc/host/sdhci-pci.c
=+DO NOT APPLY+= b/drivers/mmc/host/sdhci-pci.c
@@ -1060,6 +1060,7 @@ static void sdhci_pci_hw_reset(struct sdhci_host *host)
static const struct sdhci_ops sdhci_pci_ops = {
.enable_dma = sdhci_pci_enable_dma,
.set_bus_width = sdhci_pci_set_bus_width,
=+DO NOT APPLY+= .reset = sdhci_reset,
.hw_reset = sdhci_pci_hw_reset,
};
diff --git a/drivers/mmc/host/sdhci-pltfm.c b/drivers/mmc/host/sdhci-pltfm.c
index 40b0fe224f9d..bfbf467b61c7 100644
=-DO NOT APPLY-= a/drivers/mmc/host/sdhci-pltfm.c
=+DO NOT APPLY+= b/drivers/mmc/host/sdhci-pltfm.c
@@ -46,6 +46,7 @@ EXPORT_SYMBOL_GPL(sdhci_pltfm_clk_get_max_clock);
static const struct sdhci_ops sdhci_pltfm_ops = {
.set_bus_width = sdhci_set_bus_width,
=+DO NOT APPLY+= .reset = sdhci_reset,
};
#ifdef CONFIG_OF
diff --git a/drivers/mmc/host/sdhci-pxav2.c b/drivers/mmc/host/sdhci-pxav2.c
index d24c282e5eb8..2eee0c8b88eb 100644
=-DO NOT APPLY-= a/drivers/mmc/host/sdhci-pxav2.c
=+DO NOT APPLY+= b/drivers/mmc/host/sdhci-pxav2.c
@@ -51,11 +51,13 @@
#define MMC_CARD 0x1000
#define MMC_WIDTH 0x0100
-static void pxav2_set_private_registers(struct sdhci_host *host, u8 mask)
=+DO NOT APPLY+=static void pxav2_reset(struct sdhci_host *host, u8 mask)
{
struct platform_device *pdev = to_platform_device(mmc_dev(host->mmc));
struct sdhci_pxa_platdata *pdata = pdev->dev.platform_data;
=+DO NOT APPLY+= sdhci_reset(host, mask);
=+DO NOT APPLY+=
if (mask == SDHCI_RESET_ALL) {
u16 tmp = 0;
@@ -111,8 +113,8 @@ static void pxav2_mmc_set_bus_width(struct sdhci_host *host, int width)
static const struct sdhci_ops pxav2_sdhci_ops = {
.get_max_clock = sdhci_pltfm_clk_get_max_clock,
- .platform_reset_exit = pxav2_set_private_registers,
.set_bus_width = pxav2_mmc_set_bus_width,
=+DO NOT APPLY+= .reset = pxav2_reset,
};
#ifdef CONFIG_OF
diff --git a/drivers/mmc/host/sdhci-pxav3.c b/drivers/mmc/host/sdhci-pxav3.c
index 89c932d9685e..e6ea46c4d233 100644
=-DO NOT APPLY-= a/drivers/mmc/host/sdhci-pxav3.c
=+DO NOT APPLY+= b/drivers/mmc/host/sdhci-pxav3.c
@@ -57,11 +57,13 @@
#define SDCE_MISC_INT (1<<2)
#define SDCE_MISC_INT_EN (1<<1)
-static void pxav3_set_private_registers(struct sdhci_host *host, u8 mask)
=+DO NOT APPLY+=static void pxav3_reset(struct sdhci_host *host, u8 mask)
{
struct platform_device *pdev = to_platform_device(mmc_dev(host->mmc));
struct sdhci_pxa_platdata *pdata = pdev->dev.platform_data;
=+DO NOT APPLY+= sdhci_reset(host, mask);
=+DO NOT APPLY+=
if (mask == SDHCI_RESET_ALL) {
/*
* tune timing of read data/command when crc error happen
@@ -168,11 +170,11 @@ static int pxav3_set_uhs_signaling(struct sdhci_host *host, unsigned int uhs)
}
static const struct sdhci_ops pxav3_sdhci_ops = {
- .platform_reset_exit = pxav3_set_private_registers,
.set_uhs_signaling = pxav3_set_uhs_signaling,
.platform_send_init_74_clocks = pxav3_gen_init_74_clocks,
.get_max_clock = sdhci_pltfm_clk_get_max_clock,
.set_bus_width = sdhci_set_bus_width,
=+DO NOT APPLY+= .reset = pxav3_reset,
};
static struct sdhci_pltfm_data sdhci_pxav3_pdata = {
diff --git a/drivers/mmc/host/sdhci-s3c.c b/drivers/mmc/host/sdhci-s3c.c
index 1c4ebd69d4e5..619047be00c9 100644
=-DO NOT APPLY-= a/drivers/mmc/host/sdhci-s3c.c
=+DO NOT APPLY+= b/drivers/mmc/host/sdhci-s3c.c
@@ -366,6 +366,7 @@ static struct sdhci_ops sdhci_s3c_ops = {
.set_clock = sdhci_s3c_set_clock,
.get_min_clock = sdhci_s3c_get_min_clock,
.set_bus_width = sdhci_s3c_set_bus_width,
=+DO NOT APPLY+= .reset = sdhci_reset,
};
static void sdhci_s3c_notify_change(struct platform_device *dev, int state)
diff --git a/drivers/mmc/host/sdhci-sirf.c b/drivers/mmc/host/sdhci-sirf.c
index 16fcd48f9556..5d79e10e1ba2 100644
=-DO NOT APPLY-= a/drivers/mmc/host/sdhci-sirf.c
=+DO NOT APPLY+= b/drivers/mmc/host/sdhci-sirf.c
@@ -30,6 +30,7 @@ static unsigned int sdhci_sirf_get_max_clk(struct sdhci_host *host)
static struct sdhci_ops sdhci_sirf_ops = {
.get_max_clock = sdhci_sirf_get_max_clk,
.set_bus_width = sdhci_set_bus_width,
=+DO NOT APPLY+= .reset = sdhci_reset,
};
static struct sdhci_pltfm_data sdhci_sirf_pdata = {
diff --git a/drivers/mmc/host/sdhci-spear.c b/drivers/mmc/host/sdhci-spear.c
index 549e9e0edb27..ef990974a522 100644
=-DO NOT APPLY-= a/drivers/mmc/host/sdhci-spear.c
=+DO NOT APPLY+= b/drivers/mmc/host/sdhci-spear.c
@@ -38,6 +38,7 @@ struct spear_sdhci {
/* sdhci ops */
static const struct sdhci_ops sdhci_pltfm_ops = {
.set_bus_width = sdhci_set_bus_width,
=+DO NOT APPLY+= .reset = sdhci_reset,
};
/* gpio card detection interrupt handler */
diff --git a/drivers/mmc/host/sdhci-tegra.c b/drivers/mmc/host/sdhci-tegra.c
index feed799b827a..7754c0319fda 100644
=-DO NOT APPLY-= a/drivers/mmc/host/sdhci-tegra.c
=+DO NOT APPLY+= b/drivers/mmc/host/sdhci-tegra.c
@@ -108,12 +108,14 @@ static unsigned int tegra_sdhci_get_ro(struct sdhci_host *host)
return mmc_gpio_get_ro(host->mmc);
}
-static void tegra_sdhci_reset_exit(struct sdhci_host *host, u8 mask)
=+DO NOT APPLY+=static void tegra_sdhci_reset(struct sdhci_host *host, u8 mask)
{
struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
struct sdhci_tegra *tegra_host = pltfm_host->priv;
const struct sdhci_tegra_soc_data *soc_data = tegra_host->soc_data;
=+DO NOT APPLY+= sdhci_reset(host, mask);
=+DO NOT APPLY+=
if (!(mask & SDHCI_RESET_ALL))
return;
@@ -152,7 +154,7 @@ static const struct sdhci_ops tegra_sdhci_ops = {
.read_w = tegra_sdhci_readw,
.write_l = tegra_sdhci_writel,
.set_bus_width = tegra_sdhci_set_bus_width,
- .platform_reset_exit = tegra_sdhci_reset_exit,
=+DO NOT APPLY+= .reset = tegra_sdhci_reset,
};
static const struct sdhci_pltfm_data sdhci_tegra20_pdata = {
diff --git a/drivers/mmc/host/sdhci.c b/drivers/mmc/host/sdhci.c
index ad744941fdf8..10540192d544 100644
=-DO NOT APPLY-= a/drivers/mmc/host/sdhci.c
=+DO NOT APPLY+= b/drivers/mmc/host/sdhci.c
@@ -163,17 +163,9 @@ static void sdhci_disable_card_detection(struct sdhci_host *host)
sdhci_set_card_detection(host, false);
}
-static void sdhci_reset(struct sdhci_host *host, u8 mask)
=+DO NOT APPLY+=void sdhci_reset(struct sdhci_host *host, u8 mask)
{
unsigned long timeout;
- if (host->quirks & SDHCI_QUIRK_NO_CARD_NO_RESET) {
- if (!(sdhci_readl(host, SDHCI_PRESENT_STATE) &
- SDHCI_CARD_PRESENT))
- return;
- }
-
- if (host->ops->platform_reset_enter)
- host->ops->platform_reset_enter(host, mask);
sdhci_writeb(host, mask, SDHCI_SOFTWARE_RESET);
@@ -198,9 +190,18 @@ static void sdhci_reset(struct sdhci_host *host, u8 mask)
timeout--;
mdelay(1);
}
=+DO NOT APPLY+=}
=+DO NOT APPLY+=EXPORT_SYMBOL_GPL(sdhci_reset);
=+DO NOT APPLY+=
=+DO NOT APPLY+=static void sdhci_do_reset(struct sdhci_host *host, u8 mask)
=+DO NOT APPLY+={
=+DO NOT APPLY+= if (host->quirks & SDHCI_QUIRK_NO_CARD_NO_RESET) {
=+DO NOT APPLY+= if (!(sdhci_readl(host, SDHCI_PRESENT_STATE) &
=+DO NOT APPLY+= SDHCI_CARD_PRESENT))
=+DO NOT APPLY+= return;
=+DO NOT APPLY+= }
- if (host->ops->platform_reset_exit)
- host->ops->platform_reset_exit(host, mask);
=+DO NOT APPLY+= host->ops->reset(host, mask);
if (host->quirks & SDHCI_QUIRK_RESTORE_IRQS_AFTER_RESET) {
sdhci_writel(host, host->ier, SDHCI_INT_ENABLE);
@@ -218,9 +219,9 @@ static void sdhci_set_ios(struct mmc_host *mmc, struct mmc_ios *ios);
static void sdhci_init(struct sdhci_host *host, int soft)
{
if (soft)
- sdhci_reset(host, SDHCI_RESET_CMD|SDHCI_RESET_DATA);
=+DO NOT APPLY+= sdhci_do_reset(host, SDHCI_RESET_CMD|SDHCI_RESET_DATA);
else
- sdhci_reset(host, SDHCI_RESET_ALL);
=+DO NOT APPLY+= sdhci_do_reset(host, SDHCI_RESET_ALL);
host->ier = SDHCI_INT_BUS_POWER | SDHCI_INT_DATA_END_BIT |
SDHCI_INT_DATA_CRC | SDHCI_INT_DATA_TIMEOUT |
@@ -962,8 +963,8 @@ static void sdhci_finish_data(struct sdhci_host *host)
* upon error conditions.
*/
if (data->error) {
- sdhci_reset(host, SDHCI_RESET_CMD);
- sdhci_reset(host, SDHCI_RESET_DATA);
=+DO NOT APPLY+= sdhci_do_reset(host, SDHCI_RESET_CMD);
=+DO NOT APPLY+= sdhci_do_reset(host, SDHCI_RESET_DATA);
}
sdhci_send_command(host, data->stop);
@@ -1585,7 +1586,7 @@ static void sdhci_do_set_ios(struct sdhci_host *host, struct mmc_ios *ios)
* it on each ios seems to solve the problem.
*/
if(host->quirks & SDHCI_QUIRK_RESET_CMD_DATA_ON_IOS)
- sdhci_reset(host, SDHCI_RESET_CMD | SDHCI_RESET_DATA);
=+DO NOT APPLY+= sdhci_do_reset(host, SDHCI_RESET_CMD | SDHCI_RESET_DATA);
mmiowb();
spin_unlock_irqrestore(&host->lock, flags);
@@ -2082,8 +2083,8 @@ static void sdhci_card_event(struct mmc_host *mmc)
pr_err("%s: Resetting controller.\n",
mmc_hostname(host->mmc));
- sdhci_reset(host, SDHCI_RESET_CMD);
- sdhci_reset(host, SDHCI_RESET_DATA);
=+DO NOT APPLY+= sdhci_do_reset(host, SDHCI_RESET_CMD);
=+DO NOT APPLY+= sdhci_do_reset(host, SDHCI_RESET_DATA);
host->mrq->cmd->error = -ENOMEDIUM;
tasklet_schedule(&host->finish_tasklet);
@@ -2151,8 +2152,8 @@ static void sdhci_tasklet_finish(unsigned long param)
/* Spec says we should do both at the same time, but Ricoh
controllers do not like that. */
- sdhci_reset(host, SDHCI_RESET_CMD);
- sdhci_reset(host, SDHCI_RESET_DATA);
=+DO NOT APPLY+= sdhci_do_reset(host, SDHCI_RESET_CMD);
=+DO NOT APPLY+= sdhci_do_reset(host, SDHCI_RESET_DATA);
}
host->mrq = NULL;
@@ -2789,7 +2790,7 @@ int sdhci_add_host(struct sdhci_host *host)
if (debug_quirks2)
host->quirks2 = debug_quirks2;
- sdhci_reset(host, SDHCI_RESET_ALL);
=+DO NOT APPLY+= sdhci_do_reset(host, SDHCI_RESET_ALL);
host->version = sdhci_readw(host, SDHCI_HOST_VERSION);
host->version = (host->version & SDHCI_SPEC_VER_MASK)
@@ -3272,7 +3273,7 @@ int sdhci_add_host(struct sdhci_host *host)
#ifdef SDHCI_USE_LEDS_CLASS
reset:
- sdhci_reset(host, SDHCI_RESET_ALL);
=+DO NOT APPLY+= sdhci_do_reset(host, SDHCI_RESET_ALL);
sdhci_writel(host, 0, SDHCI_INT_ENABLE);
sdhci_writel(host, 0, SDHCI_SIGNAL_ENABLE);
free_irq(host->irq, host);
@@ -3314,7 +3315,7 @@ void sdhci_remove_host(struct sdhci_host *host, int dead)
#endif
if (!dead)
- sdhci_reset(host, SDHCI_RESET_ALL);
=+DO NOT APPLY+= sdhci_do_reset(host, SDHCI_RESET_ALL);
sdhci_writel(host, 0, SDHCI_INT_ENABLE);
sdhci_writel(host, 0, SDHCI_SIGNAL_ENABLE);
diff --git a/drivers/mmc/host/sdhci.h b/drivers/mmc/host/sdhci.h
index 0301f928eb11..7d84cb3b0e00 100644
=-DO NOT APPLY-= a/drivers/mmc/host/sdhci.h
=+DO NOT APPLY+= b/drivers/mmc/host/sdhci.h
@@ -285,8 +285,7 @@ struct sdhci_ops {
void (*platform_send_init_74_clocks)(struct sdhci_host *host,
u8 power_mode);
unsigned int (*get_ro)(struct sdhci_host *host);
- void (*platform_reset_enter)(struct sdhci_host *host, u8 mask);
- void (*platform_reset_exit)(struct sdhci_host *host, u8 mask);
=+DO NOT APPLY+= void (*reset)(struct sdhci_host *host, u8 mask);
int (*platform_execute_tuning)(struct sdhci_host *host, u32 opcode);
int (*set_uhs_signaling)(struct sdhci_host *host, unsigned int uhs);
void (*hw_reset)(struct sdhci_host *host);
@@ -402,6 +401,7 @@ static inline bool sdhci_sdio_irq_enabled(struct sdhci_host *host)
}
void sdhci_set_bus_width(struct sdhci_host *host, int width);
=+DO NOT APPLY+=void sdhci_reset(struct sdhci_host *host, u8 mask);
#ifdef CONFIG_PM
extern int sdhci_suspend_host(struct sdhci_host *host);
--
1.8.3.1
^ permalink raw reply
* [PATCH RFC 11/31] mmc: sdhci: convert generic bus width setup to library function
From: Russell King @ 2014-02-18 15:09 UTC (permalink / raw)
To: linux-arm-kernel, linux-mmc
Cc: Barry Song, spear-devel, Stephen Warren, Anton Vorontsov,
Chris Ball, Michal Simek, Thierry Reding, Viresh Kumar, Ben Dooks,
linux-tegra, linuxppc-dev
In-Reply-To: <20140218150801.GD21483@n2100.arm.linux.org.uk>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
=-DO NOT APPLY-=
drivers/mmc/host/sdhci-acpi.c | 2 ++
drivers/mmc/host/sdhci-bcm-kona.c | 1 +
drivers/mmc/host/sdhci-bcm2835.c | 1 +
drivers/mmc/host/sdhci-cns3xxx.c | 1 +
drivers/mmc/host/sdhci-dove.c | 1 +
drivers/mmc/host/sdhci-esdhc-imx.c | 6 ++---
drivers/mmc/host/sdhci-of-arasan.c | 1 +
drivers/mmc/host/sdhci-of-esdhc.c | 6 ++---
drivers/mmc/host/sdhci-of-hlwd.c | 1 +
drivers/mmc/host/sdhci-pci.c | 6 ++---
drivers/mmc/host/sdhci-pltfm.c | 1 +
drivers/mmc/host/sdhci-pxav2.c | 6 ++---
drivers/mmc/host/sdhci-pxav3.c | 1 +
drivers/mmc/host/sdhci-s3c.c | 8 +++----
drivers/mmc/host/sdhci-sirf.c | 1 +
drivers/mmc/host/sdhci-spear.c | 2 +-
drivers/mmc/host/sdhci-tegra.c | 5 ++---
drivers/mmc/host/sdhci.c | 45 +++++++++++++++++++-------------------
drivers/mmc/host/sdhci.h | 5 +++--
19 files changed, 50 insertions(+), 50 deletions(-)
diff --git a/drivers/mmc/host/sdhci-acpi.c b/drivers/mmc/host/sdhci-acpi.c
index 9ce17f6e4014..b138bfdd3843 100644
=-DO NOT APPLY-= a/drivers/mmc/host/sdhci-acpi.c
=+DO NOT APPLY+= b/drivers/mmc/host/sdhci-acpi.c
@@ -102,10 +102,12 @@ static void sdhci_acpi_int_hw_reset(struct sdhci_host *host)
static const struct sdhci_ops sdhci_acpi_ops_dflt = {
.enable_dma = sdhci_acpi_enable_dma,
=+DO NOT APPLY+= .set_bus_width = sdhci_set_bus_width,
};
static const struct sdhci_ops sdhci_acpi_ops_int = {
.enable_dma = sdhci_acpi_enable_dma,
=+DO NOT APPLY+= .set_bus_width = sdhci_set_bus_width,
.hw_reset = sdhci_acpi_int_hw_reset,
};
diff --git a/drivers/mmc/host/sdhci-bcm-kona.c b/drivers/mmc/host/sdhci-bcm-kona.c
index 7a190fe4dff1..bf851a6e4e8e 100644
=-DO NOT APPLY-= a/drivers/mmc/host/sdhci-bcm-kona.c
=+DO NOT APPLY+= b/drivers/mmc/host/sdhci-bcm-kona.c
@@ -208,6 +208,7 @@ static struct sdhci_ops sdhci_bcm_kona_ops = {
.get_max_clock = sdhci_bcm_kona_get_max_clk,
.get_timeout_clock = sdhci_bcm_kona_get_timeout_clock,
.platform_send_init_74_clocks = sdhci_bcm_kona_init_74_clocks,
=+DO NOT APPLY+= .set_bus_width = sdhci_set_bus_width,
.card_event = sdhci_bcm_kona_card_event,
};
diff --git a/drivers/mmc/host/sdhci-bcm2835.c b/drivers/mmc/host/sdhci-bcm2835.c
index f6d8d67c545f..7ab69af979b4 100644
=-DO NOT APPLY-= a/drivers/mmc/host/sdhci-bcm2835.c
=+DO NOT APPLY+= b/drivers/mmc/host/sdhci-bcm2835.c
@@ -133,6 +133,7 @@ static const struct sdhci_ops bcm2835_sdhci_ops = {
.read_b = bcm2835_sdhci_readb,
.get_max_clock = sdhci_pltfm_clk_get_max_clock,
.get_min_clock = bcm2835_sdhci_get_min_clock,
=+DO NOT APPLY+= .set_bus_width = sdhci_set_bus_width,
};
static const struct sdhci_pltfm_data bcm2835_sdhci_pdata = {
diff --git a/drivers/mmc/host/sdhci-cns3xxx.c b/drivers/mmc/host/sdhci-cns3xxx.c
index f2cc26633cb2..5e0cc9c47887 100644
=-DO NOT APPLY-= a/drivers/mmc/host/sdhci-cns3xxx.c
=+DO NOT APPLY+= b/drivers/mmc/host/sdhci-cns3xxx.c
@@ -82,6 +82,7 @@ static void sdhci_cns3xxx_set_clock(struct sdhci_host *host, unsigned int clock)
static const struct sdhci_ops sdhci_cns3xxx_ops = {
.get_max_clock = sdhci_cns3xxx_get_max_clk,
.set_clock = sdhci_cns3xxx_set_clock,
=+DO NOT APPLY+= .set_bus_width = sdhci_set_bus_width,
};
static const struct sdhci_pltfm_data sdhci_cns3xxx_pdata = {
diff --git a/drivers/mmc/host/sdhci-dove.c b/drivers/mmc/host/sdhci-dove.c
index 8424839660f8..7eef4890fd22 100644
=-DO NOT APPLY-= a/drivers/mmc/host/sdhci-dove.c
=+DO NOT APPLY+= b/drivers/mmc/host/sdhci-dove.c
@@ -86,6 +86,7 @@ static u32 sdhci_dove_readl(struct sdhci_host *host, int reg)
static const struct sdhci_ops sdhci_dove_ops = {
.read_w = sdhci_dove_readw,
.read_l = sdhci_dove_readl,
=+DO NOT APPLY+= .set_bus_width = sdhci_set_bus_width,
};
static const struct sdhci_pltfm_data sdhci_dove_pdata = {
diff --git a/drivers/mmc/host/sdhci-esdhc-imx.c b/drivers/mmc/host/sdhci-esdhc-imx.c
index b0b4eea8d232..568239d84cbe 100644
=-DO NOT APPLY-= a/drivers/mmc/host/sdhci-esdhc-imx.c
=+DO NOT APPLY+= b/drivers/mmc/host/sdhci-esdhc-imx.c
@@ -668,7 +668,7 @@ static unsigned int esdhc_pltfm_get_ro(struct sdhci_host *host)
return -ENOSYS;
}
-static int esdhc_pltfm_bus_width(struct sdhci_host *host, int width)
=+DO NOT APPLY+=static void esdhc_pltfm_set_bus_width(struct sdhci_host *host, int width)
{
u32 ctrl;
@@ -686,8 +686,6 @@ static int esdhc_pltfm_bus_width(struct sdhci_host *host, int width)
esdhc_clrset_le(host, ESDHC_CTRL_BUSWIDTH_MASK, ctrl,
SDHCI_HOST_CONTROL);
-
- return 0;
}
static void esdhc_prepare_tuning(struct sdhci_host *host, u32 val)
@@ -888,7 +886,7 @@ static struct sdhci_ops sdhci_esdhc_ops = {
.get_max_clock = esdhc_pltfm_get_max_clock,
.get_min_clock = esdhc_pltfm_get_min_clock,
.get_ro = esdhc_pltfm_get_ro,
- .platform_bus_width = esdhc_pltfm_bus_width,
=+DO NOT APPLY+= .set_bus_width = esdhc_pltfm_set_bus_width,
.set_uhs_signaling = esdhc_set_uhs_signaling,
};
diff --git a/drivers/mmc/host/sdhci-of-arasan.c b/drivers/mmc/host/sdhci-of-arasan.c
index f7c7cf62437d..9bb1dd263a45 100644
=-DO NOT APPLY-= a/drivers/mmc/host/sdhci-of-arasan.c
=+DO NOT APPLY+= b/drivers/mmc/host/sdhci-of-arasan.c
@@ -54,6 +54,7 @@ static unsigned int sdhci_arasan_get_timeout_clock(struct sdhci_host *host)
static struct sdhci_ops sdhci_arasan_ops = {
.get_max_clock = sdhci_pltfm_clk_get_max_clock,
.get_timeout_clock = sdhci_arasan_get_timeout_clock,
=+DO NOT APPLY+= .set_bus_width = sdhci_set_bus_width,
};
static struct sdhci_pltfm_data sdhci_arasan_pdata = {
diff --git a/drivers/mmc/host/sdhci-of-esdhc.c b/drivers/mmc/host/sdhci-of-esdhc.c
index 0b249970b119..86b8326e77c3 100644
=-DO NOT APPLY-= a/drivers/mmc/host/sdhci-of-esdhc.c
=+DO NOT APPLY+= b/drivers/mmc/host/sdhci-of-esdhc.c
@@ -269,7 +269,7 @@ static void esdhc_of_platform_init(struct sdhci_host *host)
host->quirks &= ~SDHCI_QUIRK_NO_BUSY_IRQ;
}
-static int esdhc_pltfm_bus_width(struct sdhci_host *host, int width)
=+DO NOT APPLY+=static void esdhc_pltfm_set_bus_width(struct sdhci_host *host, int width)
{
u32 ctrl;
@@ -289,8 +289,6 @@ static int esdhc_pltfm_bus_width(struct sdhci_host *host, int width)
clrsetbits_be32(host->ioaddr + SDHCI_HOST_CONTROL,
ESDHC_CTRL_BUSWIDTH_MASK, ctrl);
-
- return 0;
}
static const struct sdhci_ops sdhci_esdhc_ops = {
@@ -310,7 +308,7 @@ static const struct sdhci_ops sdhci_esdhc_ops = {
.platform_resume = esdhc_of_resume,
#endif
.adma_workaround = esdhci_of_adma_workaround,
- .platform_bus_width = esdhc_pltfm_bus_width,
=+DO NOT APPLY+= .set_bus_width = esdhc_pltfm_set_bus_width,
};
static const struct sdhci_pltfm_data sdhci_esdhc_pdata = {
diff --git a/drivers/mmc/host/sdhci-of-hlwd.c b/drivers/mmc/host/sdhci-of-hlwd.c
index 57c514a81ca5..4d5d0015e392 100644
=-DO NOT APPLY-= a/drivers/mmc/host/sdhci-of-hlwd.c
=+DO NOT APPLY+= b/drivers/mmc/host/sdhci-of-hlwd.c
@@ -58,6 +58,7 @@ static const struct sdhci_ops sdhci_hlwd_ops = {
.write_l = sdhci_hlwd_writel,
.write_w = sdhci_hlwd_writew,
.write_b = sdhci_hlwd_writeb,
=+DO NOT APPLY+= .set_bus_width = sdhci_set_bus_width,
};
static const struct sdhci_pltfm_data sdhci_hlwd_pdata = {
diff --git a/drivers/mmc/host/sdhci-pci.c b/drivers/mmc/host/sdhci-pci.c
index 0955777b6c7e..59cc938b450d 100644
=-DO NOT APPLY-= a/drivers/mmc/host/sdhci-pci.c
=+DO NOT APPLY+= b/drivers/mmc/host/sdhci-pci.c
@@ -1011,7 +1011,7 @@ static int sdhci_pci_enable_dma(struct sdhci_host *host)
return 0;
}
-static int sdhci_pci_bus_width(struct sdhci_host *host, int width)
=+DO NOT APPLY+=static void sdhci_pci_set_bus_width(struct sdhci_host *host, int width)
{
u8 ctrl;
@@ -1032,8 +1032,6 @@ static int sdhci_pci_bus_width(struct sdhci_host *host, int width)
}
sdhci_writeb(host, ctrl, SDHCI_HOST_CONTROL);
-
- return 0;
}
static void sdhci_pci_gpio_hw_reset(struct sdhci_host *host)
@@ -1061,7 +1059,7 @@ static void sdhci_pci_hw_reset(struct sdhci_host *host)
static const struct sdhci_ops sdhci_pci_ops = {
.enable_dma = sdhci_pci_enable_dma,
- .platform_bus_width = sdhci_pci_bus_width,
=+DO NOT APPLY+= .set_bus_width = sdhci_pci_set_bus_width,
.hw_reset = sdhci_pci_hw_reset,
};
diff --git a/drivers/mmc/host/sdhci-pltfm.c b/drivers/mmc/host/sdhci-pltfm.c
index bef250e95418..40b0fe224f9d 100644
=-DO NOT APPLY-= a/drivers/mmc/host/sdhci-pltfm.c
=+DO NOT APPLY+= b/drivers/mmc/host/sdhci-pltfm.c
@@ -45,6 +45,7 @@ unsigned int sdhci_pltfm_clk_get_max_clock(struct sdhci_host *host)
EXPORT_SYMBOL_GPL(sdhci_pltfm_clk_get_max_clock);
static const struct sdhci_ops sdhci_pltfm_ops = {
=+DO NOT APPLY+= .set_bus_width = sdhci_set_bus_width,
};
#ifdef CONFIG_OF
diff --git a/drivers/mmc/host/sdhci-pxav2.c b/drivers/mmc/host/sdhci-pxav2.c
index d51e061ec576..d24c282e5eb8 100644
=-DO NOT APPLY-= a/drivers/mmc/host/sdhci-pxav2.c
=+DO NOT APPLY+= b/drivers/mmc/host/sdhci-pxav2.c
@@ -88,7 +88,7 @@ static void pxav2_set_private_registers(struct sdhci_host *host, u8 mask)
}
}
-static int pxav2_mmc_set_width(struct sdhci_host *host, int width)
=+DO NOT APPLY+=static void pxav2_mmc_set_bus_width(struct sdhci_host *host, int width)
{
u8 ctrl;
u16 tmp;
@@ -107,14 +107,12 @@ static int pxav2_mmc_set_width(struct sdhci_host *host, int width)
}
writew(tmp, host->ioaddr + SD_CE_ATA_2);
writeb(ctrl, host->ioaddr + SDHCI_HOST_CONTROL);
-
- return 0;
}
static const struct sdhci_ops pxav2_sdhci_ops = {
.get_max_clock = sdhci_pltfm_clk_get_max_clock,
.platform_reset_exit = pxav2_set_private_registers,
- .platform_bus_width = pxav2_mmc_set_width,
=+DO NOT APPLY+= .set_bus_width = pxav2_mmc_set_bus_width,
};
#ifdef CONFIG_OF
diff --git a/drivers/mmc/host/sdhci-pxav3.c b/drivers/mmc/host/sdhci-pxav3.c
index 793dacd3b841..89c932d9685e 100644
=-DO NOT APPLY-= a/drivers/mmc/host/sdhci-pxav3.c
=+DO NOT APPLY+= b/drivers/mmc/host/sdhci-pxav3.c
@@ -172,6 +172,7 @@ static const struct sdhci_ops pxav3_sdhci_ops = {
.set_uhs_signaling = pxav3_set_uhs_signaling,
.platform_send_init_74_clocks = pxav3_gen_init_74_clocks,
.get_max_clock = sdhci_pltfm_clk_get_max_clock,
=+DO NOT APPLY+= .set_bus_width = sdhci_set_bus_width,
};
static struct sdhci_pltfm_data sdhci_pxav3_pdata = {
diff --git a/drivers/mmc/host/sdhci-s3c.c b/drivers/mmc/host/sdhci-s3c.c
index 6debda952155..1c4ebd69d4e5 100644
=-DO NOT APPLY-= a/drivers/mmc/host/sdhci-s3c.c
=+DO NOT APPLY+= b/drivers/mmc/host/sdhci-s3c.c
@@ -330,14 +330,14 @@ static void sdhci_cmu_set_clock(struct sdhci_host *host, unsigned int clock)
}
/**
- * sdhci_s3c_platform_bus_width - support 8bit buswidth
=+DO NOT APPLY+= * sdhci_s3c_set_bus_width - support 8bit buswidth
* @host: The SDHCI host being queried
* @width: MMC_BUS_WIDTH_ macro for the bus width being requested
*
* We have 8-bit width support but is not a v3 controller.
* So we add platform_bus_width() and support 8bit width.
*/
-static int sdhci_s3c_platform_bus_width(struct sdhci_host *host, int width)
=+DO NOT APPLY+=static void sdhci_s3c_set_bus_width(struct sdhci_host *host, int width)
{
u8 ctrl;
@@ -359,15 +359,13 @@ static int sdhci_s3c_platform_bus_width(struct sdhci_host *host, int width)
}
sdhci_writeb(host, ctrl, SDHCI_HOST_CONTROL);
-
- return 0;
}
static struct sdhci_ops sdhci_s3c_ops = {
.get_max_clock = sdhci_s3c_get_max_clk,
.set_clock = sdhci_s3c_set_clock,
.get_min_clock = sdhci_s3c_get_min_clock,
- .platform_bus_width = sdhci_s3c_platform_bus_width,
=+DO NOT APPLY+= .set_bus_width = sdhci_s3c_set_bus_width,
};
static void sdhci_s3c_notify_change(struct platform_device *dev, int state)
diff --git a/drivers/mmc/host/sdhci-sirf.c b/drivers/mmc/host/sdhci-sirf.c
index 696122c1b468..16fcd48f9556 100644
=-DO NOT APPLY-= a/drivers/mmc/host/sdhci-sirf.c
=+DO NOT APPLY+= b/drivers/mmc/host/sdhci-sirf.c
@@ -29,6 +29,7 @@ static unsigned int sdhci_sirf_get_max_clk(struct sdhci_host *host)
static struct sdhci_ops sdhci_sirf_ops = {
.get_max_clock = sdhci_sirf_get_max_clk,
=+DO NOT APPLY+= .set_bus_width = sdhci_set_bus_width,
};
static struct sdhci_pltfm_data sdhci_sirf_pdata = {
diff --git a/drivers/mmc/host/sdhci-spear.c b/drivers/mmc/host/sdhci-spear.c
index 2dba9f8d1760..549e9e0edb27 100644
=-DO NOT APPLY-= a/drivers/mmc/host/sdhci-spear.c
=+DO NOT APPLY+= b/drivers/mmc/host/sdhci-spear.c
@@ -37,7 +37,7 @@ struct spear_sdhci {
/* sdhci ops */
static const struct sdhci_ops sdhci_pltfm_ops = {
- /* Nothing to do for now. */
=+DO NOT APPLY+= .set_bus_width = sdhci_set_bus_width,
};
/* gpio card detection interrupt handler */
diff --git a/drivers/mmc/host/sdhci-tegra.c b/drivers/mmc/host/sdhci-tegra.c
index a835898a68dd..feed799b827a 100644
=-DO NOT APPLY-= a/drivers/mmc/host/sdhci-tegra.c
=+DO NOT APPLY+= b/drivers/mmc/host/sdhci-tegra.c
@@ -127,7 +127,7 @@ static void tegra_sdhci_reset_exit(struct sdhci_host *host, u8 mask)
}
}
-static int tegra_sdhci_buswidth(struct sdhci_host *host, int bus_width)
=+DO NOT APPLY+=static void tegra_sdhci_set_bus_width(struct sdhci_host *host, int bus_width)
{
u32 ctrl;
@@ -144,7 +144,6 @@ static int tegra_sdhci_buswidth(struct sdhci_host *host, int bus_width)
ctrl &= ~SDHCI_CTRL_4BITBUS;
}
sdhci_writeb(host, ctrl, SDHCI_HOST_CONTROL);
- return 0;
}
static const struct sdhci_ops tegra_sdhci_ops = {
@@ -152,7 +151,7 @@ static const struct sdhci_ops tegra_sdhci_ops = {
.read_l = tegra_sdhci_readl,
.read_w = tegra_sdhci_readw,
.write_l = tegra_sdhci_writel,
- .platform_bus_width = tegra_sdhci_buswidth,
=+DO NOT APPLY+= .set_bus_width = tegra_sdhci_set_bus_width,
.platform_reset_exit = tegra_sdhci_reset_exit,
};
diff --git a/drivers/mmc/host/sdhci.c b/drivers/mmc/host/sdhci.c
index 5fe211dfb792..ad744941fdf8 100644
=-DO NOT APPLY-= a/drivers/mmc/host/sdhci.c
=+DO NOT APPLY+= b/drivers/mmc/host/sdhci.c
@@ -1413,6 +1413,27 @@ static void sdhci_request(struct mmc_host *mmc, struct mmc_request *mrq)
spin_unlock_irqrestore(&host->lock, flags);
}
=+DO NOT APPLY+=void sdhci_set_bus_width(struct sdhci_host *host, int width)
=+DO NOT APPLY+={
=+DO NOT APPLY+= u8 ctrl;
=+DO NOT APPLY+=
=+DO NOT APPLY+= ctrl = sdhci_readb(host, SDHCI_HOST_CONTROL);
=+DO NOT APPLY+= if (width == MMC_BUS_WIDTH_8) {
=+DO NOT APPLY+= ctrl &= ~SDHCI_CTRL_4BITBUS;
=+DO NOT APPLY+= if (host->version >= SDHCI_SPEC_300)
=+DO NOT APPLY+= ctrl |= SDHCI_CTRL_8BITBUS;
=+DO NOT APPLY+= } else {
=+DO NOT APPLY+= if (host->version >= SDHCI_SPEC_300)
=+DO NOT APPLY+= ctrl &= ~SDHCI_CTRL_8BITBUS;
=+DO NOT APPLY+= if (width == MMC_BUS_WIDTH_4)
=+DO NOT APPLY+= ctrl |= SDHCI_CTRL_4BITBUS;
=+DO NOT APPLY+= else
=+DO NOT APPLY+= ctrl &= ~SDHCI_CTRL_4BITBUS;
=+DO NOT APPLY+= }
=+DO NOT APPLY+= sdhci_writeb(host, ctrl, SDHCI_HOST_CONTROL);
=+DO NOT APPLY+=}
=+DO NOT APPLY+=EXPORT_SYMBOL_GPL(sdhci_set_bus_width);
=+DO NOT APPLY+=
static void sdhci_do_set_ios(struct sdhci_host *host, struct mmc_ios *ios)
{
unsigned long flags;
@@ -1458,29 +1479,7 @@ static void sdhci_do_set_ios(struct sdhci_host *host, struct mmc_ios *ios)
if (host->ops->platform_send_init_74_clocks)
host->ops->platform_send_init_74_clocks(host, ios->power_mode);
- /*
- * If your platform has 8-bit width support but is not a v3 controller,
- * or if it requires special setup code, you should implement that in
- * platform_bus_width().
- */
- if (host->ops->platform_bus_width) {
- host->ops->platform_bus_width(host, ios->bus_width);
- } else {
- ctrl = sdhci_readb(host, SDHCI_HOST_CONTROL);
- if (ios->bus_width == MMC_BUS_WIDTH_8) {
- ctrl &= ~SDHCI_CTRL_4BITBUS;
- if (host->version >= SDHCI_SPEC_300)
- ctrl |= SDHCI_CTRL_8BITBUS;
- } else {
- if (host->version >= SDHCI_SPEC_300)
- ctrl &= ~SDHCI_CTRL_8BITBUS;
- if (ios->bus_width == MMC_BUS_WIDTH_4)
- ctrl |= SDHCI_CTRL_4BITBUS;
- else
- ctrl &= ~SDHCI_CTRL_4BITBUS;
- }
- sdhci_writeb(host, ctrl, SDHCI_HOST_CONTROL);
- }
=+DO NOT APPLY+= host->ops->set_bus_width(host, ios->bus_width);
ctrl = sdhci_readb(host, SDHCI_HOST_CONTROL);
diff --git a/drivers/mmc/host/sdhci.h b/drivers/mmc/host/sdhci.h
index fc6f81d2f377..0301f928eb11 100644
=-DO NOT APPLY-= a/drivers/mmc/host/sdhci.h
=+DO NOT APPLY+= b/drivers/mmc/host/sdhci.h
@@ -281,8 +281,7 @@ struct sdhci_ops {
unsigned int (*get_max_clock)(struct sdhci_host *host);
unsigned int (*get_min_clock)(struct sdhci_host *host);
unsigned int (*get_timeout_clock)(struct sdhci_host *host);
- int (*platform_bus_width)(struct sdhci_host *host,
- int width);
=+DO NOT APPLY+= void (*set_bus_width)(struct sdhci_host *host, int width);
void (*platform_send_init_74_clocks)(struct sdhci_host *host,
u8 power_mode);
unsigned int (*get_ro)(struct sdhci_host *host);
@@ -402,6 +401,8 @@ static inline bool sdhci_sdio_irq_enabled(struct sdhci_host *host)
return !!(host->flags & SDHCI_SDIO_IRQ_ENABLED);
}
=+DO NOT APPLY+=void sdhci_set_bus_width(struct sdhci_host *host, int width);
=+DO NOT APPLY+=
#ifdef CONFIG_PM
extern int sdhci_suspend_host(struct sdhci_host *host);
extern int sdhci_resume_host(struct sdhci_host *host);
--
1.8.3.1
^ permalink raw reply
* [PATCH RFC 00/31] SDHCI and SDIO IRQ improvements
From: Russell King - ARM Linux @ 2014-02-18 15:08 UTC (permalink / raw)
To: linux-arm-kernel, linux-mmc
Cc: Barry Song, spear-devel, Stephen Warren, Anton Vorontsov,
Chris Ball, Michal Simek, Thierry Reding, Viresh Kumar, Ben Dooks,
linux-tegra, Thomas Gleixner, linuxppc-dev
The following patch series is targetted at two things - fixing the SDIO
interrupt handling, and fixing problems with the sdhci driver.
- the first two patches from Thomas Gleixner provide genirq support to
allow us to fix the SDIO interrupt handling in a graceful manner.
- patch 3 adds support for avoiding the buggy sdio_irq thread - the
problem is described in that commit. Other solutions were explored,
but this is the one which was settled on after discussions between
Thomas, scheduler people and myself.
- patches 4 to 7 update sdhci to use a genirq to deal with the threaded
part of the interrupts.
- patch 8 allows card interrupts to be received from a SDIO card while
runtime suspended. Without this patch, Wifi cards attached to a
kernel with runtime PM support built in totally fail to work. This
allows them to work. Tested in 4-bit mode.
- patches 9 onwards are cleanups and fixes to the sdhci code.
drivers/mmc/core/sdio_irq.c | 41 ++-
drivers/mmc/host/sdhci-acpi.c | 8 +
drivers/mmc/host/sdhci-bcm-kona.c | 4 +
drivers/mmc/host/sdhci-bcm2835.c | 4 +
drivers/mmc/host/sdhci-cns3xxx.c | 13 +-
drivers/mmc/host/sdhci-dove.c | 4 +
drivers/mmc/host/sdhci-esdhc-imx.c | 82 ++---
drivers/mmc/host/sdhci-esdhc.h | 4 +-
drivers/mmc/host/sdhci-of-arasan.c | 4 +
drivers/mmc/host/sdhci-of-esdhc.c | 70 +++--
drivers/mmc/host/sdhci-of-hlwd.c | 4 +
drivers/mmc/host/sdhci-pci.c | 9 +-
drivers/mmc/host/sdhci-pltfm.c | 4 +
drivers/mmc/host/sdhci-pxav2.c | 14 +-
drivers/mmc/host/sdhci-pxav3.c | 13 +-
drivers/mmc/host/sdhci-s3c.c | 36 ++-
drivers/mmc/host/sdhci-sirf.c | 4 +
drivers/mmc/host/sdhci-spear.c | 5 +-
drivers/mmc/host/sdhci-tegra.c | 27 +-
drivers/mmc/host/sdhci.c | 606 ++++++++++++++++++-------------------
drivers/mmc/host/sdhci.h | 20 +-
include/linux/hardirq.h | 1 +
include/linux/interrupt.h | 1 +
include/linux/mmc/host.h | 3 +
include/linux/mmc/sdhci.h | 14 +-
kernel/irq/handle.c | 4 +-
kernel/irq/internals.h | 1 +
kernel/irq/manage.c | 94 ++++--
28 files changed, 608 insertions(+), 486 deletions(-)
--
FTTC broadband for 0.8mile line: 5.8Mbps down 500kbps up. Estimation
in database were 13.1 to 19Mbit for a good line, about 7.5+ for a bad.
Estimate before purchase was "up to 13.2Mbit".
^ permalink raw reply
* ppc: RECLAIM_DISTANCE 10?
From: Michal Hocko @ 2014-02-18 9:06 UTC (permalink / raw)
To: Anton Blanchard; +Cc: linuxppc-dev, LKML, linux-mm
Hi,
I have just noticed that ppc has RECLAIM_DISTANCE reduced to 10 set by
56608209d34b (powerpc/numa: Set a smaller value for RECLAIM_DISTANCE to
enable zone reclaim). The commit message suggests that the zone reclaim
is desirable for all NUMA configurations.
History has shown that the zone reclaim is more often harmful than
helpful and leads to performance problems. The default RECLAIM_DISTANCE
for generic case has been increased from 20 to 30 around 3.0
(32e45ff43eaf mm: increase RECLAIM_DISTANCE to 30).
I strongly suspect that the patch is incorrect and it should be
reverted. Before I will send a revert I would like to understand what
led to the patch in the first place. I do not see why would PPC use only
LOCAL_DISTANCE and REMOTE_DISTANCE distances and in fact machines I have
seen use different values.
Anton, could you comment please?
--
Michal Hocko
SUSE Labs
^ permalink raw reply
* Re: Build regressions/improvements in v3.14-rc3
From: Geert Uytterhoeven @ 2014-02-18 9:06 UTC (permalink / raw)
To: linux-kernel@vger.kernel.org
Cc: linux-xtensa@linux-xtensa.org, the arch/x86 maintainers,
linuxppc-dev@lists.ozlabs.org
In-Reply-To: <1392714172-2712-1-git-send-email-geert@linux-m68k.org>
On Tue, Feb 18, 2014 at 10:02 AM, Geert Uytterhoeven
<geert@linux-m68k.org> wrote:
> JFYI, when comparing v3.14-rc3[1] to v3.14-rc2[3], the summaries are:
> - build errors: +17/-6
+ /scratch/kisskb/src/arch/powerpc/include/asm/floppy.h: error:
'isa_bridge_pcidev' undeclared (first use in this function): =>
142:20
+ /scratch/kisskb/src/drivers/pcmcia/m8xx_pcmcia.c: error: #error
m8xx_pcmcia: Bad configuration!: => 127:2
+ /scratch/kisskb/src/drivers/pcmcia/m8xx_pcmcia.c: error:
'PCMCIA_IO_WIN_NO' undeclared here (not in a function): => 220:30
+ /scratch/kisskb/src/drivers/pcmcia/m8xx_pcmcia.c: error:
'PCMCIA_MEM_WIN_NO' undeclared here (not in a function): => 219:32
+ /scratch/kisskb/src/drivers/pcmcia/m8xx_pcmcia.c: error:
'PCMCIA_SOCKETS_NO' undeclared here (not in a function): => 225:34
+ /scratch/kisskb/src/drivers/pcmcia/m8xx_pcmcia.c: error: 'irq_map'
undeclared (first use in this function): => 1027:10
+ /scratch/kisskb/src/drivers/pcmcia/m8xx_pcmcia.c: error: 's'
undeclared (first use in this function): => 982:2
+ /scratch/kisskb/src/drivers/pcmcia/m8xx_pcmcia.c: error: expected
')' before 'PCMCIA_BOARD_MSG': => 1036:2
+ /scratch/kisskb/src/drivers/pcmcia/m8xx_pcmcia.c: error: implicit
declaration of function 'hardware_disable'
[-Werror=implicit-function-declaration]: => 1137:3
+ /scratch/kisskb/src/drivers/pcmcia/m8xx_pcmcia.c: error: implicit
declaration of function 'hardware_enable'
[-Werror=implicit-function-declaration]: => 1080:2
+ /scratch/kisskb/src/drivers/pcmcia/m8xx_pcmcia.c: error: implicit
declaration of function 'mk_int_int_mask'
[-Werror=implicit-function-declaration]: => 748:6
+ /scratch/kisskb/src/drivers/pcmcia/m8xx_pcmcia.c: error: implicit
declaration of function 'socket_get'
[-Werror=implicit-function-declaration]: => 657:2
+ /scratch/kisskb/src/drivers/pcmcia/m8xx_pcmcia.c: error: implicit
declaration of function 'voltage_set'
[-Werror=implicit-function-declaration]: => 686:2
powerpc-randconfig
+ /scratch/kisskb/src/drivers/gpio/gpio-xtensa.c: Error: unknown
opcode or format name 'read_impwire': => 87
+ /scratch/kisskb/src/drivers/gpio/gpio-xtensa.c: Error: unknown
opcode or format name 'rur.expstate': => 110
+ /scratch/kisskb/src/drivers/gpio/gpio-xtensa.c: Error: unknown
opcode or format name 'wrmsk_expstate': => 124
xtensa-allmodconfig
+ error: kvm_main.c: undefined reference to `__stack_chk_guard': =>
.text+0x6895)
i386-randconfig
> [1] http://kisskb.ellerman.id.au/kisskb/head/7190/ (all 119 configs)
> [3] http://kisskb.ellerman.id.au/kisskb/head/7167/ (all 119 configs)
Gr{oetje,eeting}s,
Geert
--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org
In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
-- Linus Torvalds
^ permalink raw reply
* Re: [PATCH 2/2] of: search the best compatible match first in __of_match_node()
From: Kevin Hao @ 2014-02-18 5:41 UTC (permalink / raw)
To: Grant Likely
Cc: devicetree, Rob Herring, linuxppc-dev, Stephen N Chivers,
Sebastian Hesselbarth
In-Reply-To: <20140217175834.62ED6C403C8@trevor.secretlab.ca>
[-- Attachment #1: Type: text/plain, Size: 1101 bytes --]
On Mon, Feb 17, 2014 at 05:58:34PM +0000, Grant Likely wrote:
> This seems wrong also. The compatible order should be checked for even
> when m->name or m->type are set. You actually need to score the entries
> to do this properly. The pseudo-code should look like this:
>
> uint best_score = ~0;
> of_device_id *best_match = NULL;
> for_each(matches) {
> uint score = ~0;
> for_each_compatible(index) {
> if (match->compatible == compatible[index])
> score = index * 10;
> }
>
> /* Matching name is a bit better than not */
> if (match->name == node->name)
> score--;
>
> /* Matching type is better than matching name */
> /* (but matching both is even better than that */
> if (match->type == node->type)
> score -= 2;
>
> if (score < best_score)
> best_match = match;
> }
> return best_match;
>
> This is actually very similar to the original code. It is an easy
> modification. This is very similar to how the of_fdt_is_compatible()
> function works.
I like this idea and will make a new patch based on this.
Thanks,
Kevin
>
> g.
[-- Attachment #2: Type: application/pgp-signature, Size: 490 bytes --]
^ permalink raw reply
* Re: PCI-PCI bridge configuration in linux device tree
From: Scott Wood @ 2014-02-18 0:50 UTC (permalink / raw)
To: Anand Mistry; +Cc: linuxppc-dev
In-Reply-To: <20140215115045.M44796@Spectross.com>
On Sat, 2014-02-15 at 18:03 +0530, Anand Mistry wrote:
> Hello,
>
> We are working on a cPCI based application involving MPC8313 processor. The
> cPCI back-plane has a PCI-PCI bridge on it.
>
> While booting, the linux kernel(2.6.23)
2.6.23 is over 6 years old. Why are you using it for new hardware
support? Note that this code looks very different now.
Plus, from the file number in the crash output, it looks like you're not
dealing with vanilla 2.6.23, as there is no BUG on line 589 of pci_32.c.
If this is Freescale BSP/SDK code, support requests should be addressed
to support@freescale.com or https://community.freescale.com/ -- though
again I suggest going with current upstream code given the age of the
BSP code.
There is a BUG_ON on line 588 -- if it's that one (BUG_ON(rc) after
pci_assign_resource) then look into why pci_assign_resource is failing.
Also please ensure that you have CONFIG_KALLSYMS enabled when submitting
crash dumps.
-Scott
^ permalink raw reply
* Re: [PATCH v2 10/11] powerpc/perf: add kconfig option for hypervisor provided counters
From: Cody P Schafer @ 2014-02-17 19:41 UTC (permalink / raw)
To: Michael Ellerman
Cc: Paul Bolle, Peter Zijlstra, Priyanka Jain, LKML, Tang Yuantian,
Ingo Molnar, Paul Mackerras, Aneesh Kumar K.V,
Arnaldo Carvalho de Melo, Scott Wood, Lijun Pan, Linux PPC,
Anton Blanchard, Anshuman Khandual
In-Reply-To: <1392621108.8740.5.camel@concordia>
On 02/16/2014 11:11 PM, Michael Ellerman wrote:
> On Fri, 2014-02-14 at 16:25 -0800, Cody P Schafer wrote:
>> On Fri, Feb 14, 2014 at 04:32:13PM -0600, Scott Wood wrote:
>>> On Fri, 2014-02-14 at 14:02 -0800, Cody P Schafer wrote:
>>>> diff --git a/arch/powerpc/platforms/Kconfig.cputype b/arch/powerpc/platforms/Kconfig.cputype
>>>> index 434fda3..dcc67cd 100644
>>>> --- a/arch/powerpc/platforms/Kconfig.cputype
>>>> +++ b/arch/powerpc/platforms/Kconfig.cputype
>>>> @@ -364,6 +364,12 @@ config PPC_PERF_CTRS
>>>> help
>>>> This enables the powerpc-specific perf_event back-end.
>>>>
>>>> +config HV_PERF_CTRS
>>>> + def_bool y
>>>> + depends on PERF_EVENTS && PPC_HAVE_PMU_SUPPORT
>>>> + help
>>>> + Enable access to perf counters provided by the hypervisor
>>>
>>> Please don't add default-y stuff that is platform-specific, and
>>> definitely point out that platform dependency in the config description
>>> -- I have to look elsewhere in the patchset to determine that this is
>>> for "Power Hypervisor". PPC_HAVE_PMU_SUPPORT is enabled by all 6xx
>>> builds, even for hardware like e300 that doesn't have PMU at all (it has
>>> the FSL embedded perfmon instead), much less this hv interface.
>>>
>>> And yes, PPC_PERF_CTRS has the same problem and should be fixed. :-)
>>
>> Yep, I just based this one on what PPC_PERF_CTRS was doing.
>>
>> How about the following:
>>
>> +config HV_PERF_CTRS
>> + bool "Perf Hypervisor supplied counters"
>
> "Support for Hypervisor supplied PMU events (24x7 & GPCI)" ?
Sounds good to me.
>
>> + default y
>> + depends on PERF_EVENTS && PPC_HAVE_PMU_SUPPORT && PPC_PSERIES
>
> I think you just want:
>
> depends on PERF_EVENTS && PPC_PSERIES
>
>
> Because you're adding two completely new PMUs, they're not a "struct power_pmu"
> backend for the existing powerpc PMU implementation.
>
Ack. I'll fix this up in v3
^ permalink raw reply
* Re: Anyone using SysRQ key sequences on console serial port ?
From: Scott Wood @ 2014-02-17 19:37 UTC (permalink / raw)
To: Paul Gortmaker; +Cc: John Donnelly, linuxppc-dev
In-Reply-To: <CAP=VYLpgMYaSVjTwJ2Q15XB+nozz=OhAPU85Nb9xG_FdP5dcyA@mail.gmail.com>
On Sun, 2014-02-16 at 10:56 -0500, Paul Gortmaker wrote:
> On Fri, Feb 14, 2014 at 3:42 PM, John Donnelly <john.d@servergy.com> wrote:
> > Hi,
> >
> > I tried using the SysRq hotkey sequence on a serial console -
> > 3.11.0-5-powerpc-e500mc system, by issuing a " break " and the system
> > immediately wedges after displaying "SysRQ : HELP : " using both "Putty" and
> > "Teraterm" terminal emulators. I know the system is dead because my ssh
> > sessions stopped too.
>
> Yes it does work -- or at least it _did_ work. Make sure your dts has an entry
>
> compatible = "fsl,ns16550", "ns16550";
>
> since that enables a workaround I'd added for a hardware errata relating
> to sending breaks over the serial console. What you describe above
> makes me think you aren't getting the workaround enabled.
Also make sure CONFIG_SERIAL_8250_FSL is enabled.
-Scott
^ permalink raw reply
* Re: [PATCH] of: give priority to the compatible match in __of_match_node()
From: Grant Likely @ 2014-02-17 18:06 UTC (permalink / raw)
To: Rob Herring, Kevin Hao
Cc: devicetree@vger.kernel.org, Arnd Bergmann, Chris Proctor,
Stephen N Chivers, Rob Herring, Scott Wood, linuxppc-dev,
Sebastian Hesselbarth
In-Reply-To: <CAL_JsqKMi2H=vwoxrOt8QRA2xJeiLqBKKfLtt4QRCRoFk6JUHg@mail.gmail.com>
On Thu, 13 Feb 2014 13:01:42 -0600, Rob Herring <robherring2@gmail.com> wrote:
> On Wed, Feb 12, 2014 at 5:38 AM, Kevin Hao <haokexin@gmail.com> wrote:
> > When the device node do have a compatible property, we definitely
> > prefer the compatible match besides the type and name. Only if
> > there is no such a match, we then consider the candidate which
> > doesn't have compatible entry but do match the type or name with
> > the device node.
> >
> > This is based on a patch from Sebastian Hesselbarth.
> > http://patchwork.ozlabs.org/patch/319434/
> >
> > I did some code refactoring and also fixed a bug in the original patch.
>
> I'm inclined to just revert this once again and avoid possibly
> breaking yet another platform.
>
> However, I think I would like to see this structured differently. We
> basically have 2 ways of matching: the existing pre-3.14 way and the
> desired match on best compatible only. All new bindings should match
> with the new way and the old way needs to be kept for compatibility.
> So lets structure the code that way. Search the match table first for
> best compatible with name and type NULL, then search the table the old
> way. I realize it appears you are doing this, but it is not clear this
> is the intent of the code. I would like to see this written as a patch
> with commit 105353145eafb3ea919 reverted first and you add a new match
> function to call first and then fallback to the existing function.
I disagree here, partially because it complicates the code and partially
because it leaves an incorrect corner case. Compatible is always the
preferred matching, even on old drivers, but there are bindings that
take both compatible and type or name into account. Even those cases
should rank the compatible order.
g.
^ permalink raw reply
* Re: [PATCH 2/2] of: search the best compatible match first in __of_match_node()
From: Grant Likely @ 2014-02-17 17:59 UTC (permalink / raw)
To: Rob Herring, Kevin Hao
Cc: devicetree@vger.kernel.org, Stephen N Chivers, Rob Herring,
Kumar Gala, linuxppc-dev, Sebastian Hesselbarth
In-Reply-To: <CAL_JsqKq4_1K8EF+PZoP=0=H6tiRxbgdzs9UHHVdbHS014n74Q@mail.gmail.com>
On Fri, 14 Feb 2014 09:53:40 -0600, Rob Herring <robherring2@gmail.com> wrote:
> On Thu, Feb 13, 2014 at 11:22 PM, Kevin Hao <haokexin@gmail.com> wrote:
> > Currently, of_match_node compares each given match against all node's
> > compatible strings with of_device_is_compatible.
> >
> > To achieve multiple compatible strings per node with ordering from
> > specific to generic, this requires given matches to be ordered from
> > specific to generic. For most of the drivers this is not true and also
> > an alphabetical ordering is more sane there.
> >
> > Therefore, this patch introduces a function to match each of the node's
> > compatible strings against all given compatible matches without type and
> > name first, before checking the next compatible string. This implies
> > that node's compatibles are ordered from specific to generic while
> > given matches can be in any order. If we fail to find such a match
> > entry, then fall-back to the old method in order to keep compatibility.
> >
> > Cc: Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>
> > Signed-off-by: Kevin Hao <haokexin@gmail.com>
>
> Looks good to me. I'll put this in next for a few days. I'd really
> like to see some acks and tested-by's before sending to Linus.
As I commented on the patch, I don't think the new solution is correct
either. I've made a suggestion on how to fix it, but in the mean time
the revert should be applied and sent to Linus.
g.
^ permalink raw reply
* Re: [PATCH 2/2] of: search the best compatible match first in __of_match_node()
From: Grant Likely @ 2014-02-17 17:58 UTC (permalink / raw)
To: Kevin Hao, devicetree, linuxppc-dev
Cc: Stephen N Chivers, Rob Herring, Kevin Hao, Sebastian Hesselbarth
In-Reply-To: <1392355366-1445-3-git-send-email-haokexin@gmail.com>
On Fri, 14 Feb 2014 13:22:46 +0800, Kevin Hao <haokexin@gmail.com> wrote:
> Currently, of_match_node compares each given match against all node's
> compatible strings with of_device_is_compatible.
>
> To achieve multiple compatible strings per node with ordering from
> specific to generic, this requires given matches to be ordered from
> specific to generic. For most of the drivers this is not true and also
> an alphabetical ordering is more sane there.
>
> Therefore, this patch introduces a function to match each of the node's
> compatible strings against all given compatible matches without type and
> name first, before checking the next compatible string. This implies
> that node's compatibles are ordered from specific to generic while
> given matches can be in any order. If we fail to find such a match
> entry, then fall-back to the old method in order to keep compatibility.
>
> Cc: Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>
> Signed-off-by: Kevin Hao <haokexin@gmail.com>
> ---
> drivers/of/base.c | 43 ++++++++++++++++++++++++++++++++++++++++++-
> 1 file changed, 42 insertions(+), 1 deletion(-)
>
> diff --git a/drivers/of/base.c b/drivers/of/base.c
> index ba195fbce4c6..10b51106c854 100644
> --- a/drivers/of/base.c
> +++ b/drivers/of/base.c
> @@ -730,13 +730,49 @@ out:
> }
> EXPORT_SYMBOL(of_find_node_with_property);
>
> +static const struct of_device_id *
> +of_match_compatible(const struct of_device_id *matches,
> + const struct device_node *node)
> +{
> + const char *cp;
> + int cplen, l;
> + const struct of_device_id *m;
> +
> + cp = __of_get_property(node, "compatible", &cplen);
> + while (cp && (cplen > 0)) {
> + m = matches;
> + while (m->name[0] || m->type[0] || m->compatible[0]) {
> + /* Only match for the entries without type and name */
> + if (m->name[0] || m->type[0] ||
> + of_compat_cmp(m->compatible, cp,
> + strlen(m->compatible)))
> + m++;
This seems wrong also. The compatible order should be checked for even
when m->name or m->type are set. You actually need to score the entries
to do this properly. The pseudo-code should look like this:
uint best_score = ~0;
of_device_id *best_match = NULL;
for_each(matches) {
uint score = ~0;
for_each_compatible(index) {
if (match->compatible == compatible[index])
score = index * 10;
}
/* Matching name is a bit better than not */
if (match->name == node->name)
score--;
/* Matching type is better than matching name */
/* (but matching both is even better than that */
if (match->type == node->type)
score -= 2;
if (score < best_score)
best_match = match;
}
return best_match;
This is actually very similar to the original code. It is an easy
modification. This is very similar to how the of_fdt_is_compatible()
function works.
g.
^ permalink raw reply
* Re: [PATCH v2 10/11] powerpc/perf: add kconfig option for hypervisor provided counters
From: Michael Ellerman @ 2014-02-17 7:11 UTC (permalink / raw)
To: Cody P Schafer
Cc: Paul Bolle, Peter Zijlstra, Priyanka Jain, LKML, Tang Yuantian,
Ingo Molnar, Paul Mackerras, Aneesh Kumar K.V,
Arnaldo Carvalho de Melo, Scott Wood, Lijun Pan, Linux PPC,
Anton Blanchard, Anshuman Khandual
In-Reply-To: <20140215002505.GA2991@negative>
On Fri, 2014-02-14 at 16:25 -0800, Cody P Schafer wrote:
> On Fri, Feb 14, 2014 at 04:32:13PM -0600, Scott Wood wrote:
> > On Fri, 2014-02-14 at 14:02 -0800, Cody P Schafer wrote:
> > > diff --git a/arch/powerpc/platforms/Kconfig.cputype b/arch/powerpc/platforms/Kconfig.cputype
> > > index 434fda3..dcc67cd 100644
> > > --- a/arch/powerpc/platforms/Kconfig.cputype
> > > +++ b/arch/powerpc/platforms/Kconfig.cputype
> > > @@ -364,6 +364,12 @@ config PPC_PERF_CTRS
> > > help
> > > This enables the powerpc-specific perf_event back-end.
> > >
> > > +config HV_PERF_CTRS
> > > + def_bool y
> > > + depends on PERF_EVENTS && PPC_HAVE_PMU_SUPPORT
> > > + help
> > > + Enable access to perf counters provided by the hypervisor
> >
> > Please don't add default-y stuff that is platform-specific, and
> > definitely point out that platform dependency in the config description
> > -- I have to look elsewhere in the patchset to determine that this is
> > for "Power Hypervisor". PPC_HAVE_PMU_SUPPORT is enabled by all 6xx
> > builds, even for hardware like e300 that doesn't have PMU at all (it has
> > the FSL embedded perfmon instead), much less this hv interface.
> >
> > And yes, PPC_PERF_CTRS has the same problem and should be fixed. :-)
>
> Yep, I just based this one on what PPC_PERF_CTRS was doing.
>
> How about the following:
>
> +config HV_PERF_CTRS
> + bool "Perf Hypervisor supplied counters"
"Support for Hypervisor supplied PMU events (24x7 & GPCI)" ?
> + default y
> + depends on PERF_EVENTS && PPC_HAVE_PMU_SUPPORT && PPC_PSERIES
I think you just want:
depends on PERF_EVENTS && PPC_PSERIES
Because you're adding two completely new PMUs, they're not a "struct power_pmu"
backend for the existing powerpc PMU implementation.
cheers
^ permalink raw reply
* Re: [RFC PATCH 2/3] topology: support node_numa_mem() for determining the fallback node
From: Joonsoo Kim @ 2014-02-17 7:00 UTC (permalink / raw)
To: Nishanth Aravamudan
Cc: Han Pingtian, Matt Mackall, Pekka Enberg,
Linux Memory Management List, Paul Mackerras, Anton Blanchard,
David Rientjes, Christoph Lameter, linuxppc-dev, Wanpeng Li
In-Reply-To: <20140213065137.GA10860@linux.vnet.ibm.com>
On Wed, Feb 12, 2014 at 10:51:37PM -0800, Nishanth Aravamudan wrote:
> Hi Joonsoo,
> Also, given that only ia64 and (hopefuly soon) ppc64 can set
> CONFIG_HAVE_MEMORYLESS_NODES, does that mean x86_64 can't have
> memoryless nodes present? Even with fakenuma? Just curious.
I don't know, because I'm not expert on NUMA system :)
At first glance, fakenuma can't be used for testing
CONFIG_HAVE_MEMORYLESS_NODES. Maybe some modification is needed.
Thanks.
^ permalink raw reply
* Re: [RFC PATCH 2/3] topology: support node_numa_mem() for determining the fallback node
From: Joonsoo Kim @ 2014-02-17 6:52 UTC (permalink / raw)
To: Christoph Lameter
Cc: Han Pingtian, Nishanth Aravamudan, Matt Mackall, Pekka Enberg,
Linux Memory Management List, Paul Mackerras, Anton Blanchard,
David Rientjes, linuxppc-dev, Wanpeng Li
In-Reply-To: <alpine.DEB.2.10.1402121612270.8183@nuc>
On Wed, Feb 12, 2014 at 04:16:11PM -0600, Christoph Lameter wrote:
> Here is another patch with some fixes. The additional logic is only
> compiled in if CONFIG_HAVE_MEMORYLESS_NODES is set.
>
> Subject: slub: Memoryless node support
>
> Support memoryless nodes by tracking which allocations are failing.
I still don't understand why this tracking is needed.
All we need for allcation targeted to memoryless node is to fallback proper
node, that it, numa_mem_id() node of targeted node. My previous patch
implements it and use proper fallback node on every allocation code path.
Why this tracking is needed? Please elaborate more on this.
> Allocations targeted to the nodes without memory fall back to the
> current available per cpu objects and if that is not available will
> create a new slab using the page allocator to fallback from the
> memoryless node to some other node.
>
> Signed-off-by: Christoph Lameter <cl@linux.com>
>
> @@ -1722,7 +1738,7 @@ static void *get_partial(struct kmem_cac
> struct kmem_cache_cpu *c)
> {
> void *object;
> - int searchnode = (node == NUMA_NO_NODE) ? numa_node_id() : node;
> + int searchnode = (node == NUMA_NO_NODE) ? numa_mem_id() : node;
>
> object = get_partial_node(s, get_node(s, searchnode), c, flags);
> if (object || node != NUMA_NO_NODE)
This isn't enough.
Consider that allcation targeted to memoryless node.
get_partial_node() always fails even if there are some partial slab on
memoryless node's neareast node.
We should fallback to some proper node in this case, since there is no slab
on memoryless node.
Thanks.
^ permalink raw reply
* [git pull] Please pull powerpc.git merge branch
From: Benjamin Herrenschmidt @ 2014-02-17 1:16 UTC (permalink / raw)
To: Linus Torvalds; +Cc: linuxppc-dev list, Andrew Morton, Linux Kernel list
Hi Linus !
Here are some more powerpc fixes for 3.14
The main one is a nasty issue with the NUMA balancing support
which requires a small generic change and the addition of a new
accessor to set _PAGE_NUMA. Both have been reviewed and acked by
Mel and Rik.
The changelog should have plenty of details but basically,
without this fix, we get random user segfaults and/or
corruptions due to missing TLB/hash flushes. Aneesh series
of 3 patches fixes it.
We have some vDSO vs. perf fixes from Anton, some small EEH
fixes from Gavin, a ppc32 regression vs. the stack overflow
detector, and a fix for the way we handle PCIe host bridge
speed settings on pseries (which is needed for proper
operations of AMD graphics cards on Power8).
Cheers,
Ben.
The following changes since commit cd15b048445d0a54f7147c35a86c5a16ef231554:
powerpc/powernv: Add iommu DMA bypass support for IODA2 (2014-02-11 16:07:37 +1100)
are available in the git repository at:
git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc.git merge
for you to fetch changes up to 66f9af83e56bfa12964d251df9d60fb571579913:
powerpc/eeh: Disable EEH on reboot (2014-02-17 11:19:39 +1100)
----------------------------------------------------------------
Aneesh Kumar K.V (3):
powerpc/mm: Add new "set" flag argument to pte/pmd update function
mm: Dirty accountable change only apply to non prot numa case
mm: Use ptep/pmdp_set_numa() for updating _PAGE_NUMA bit
Anton Blanchard (2):
powerpc: Link VDSOs at 0x0
powerpc: Use unstripped VDSO image for more accurate profiling data
Gavin Shan (3):
powerpc/powernv: Rework EEH reset
powerpc/eeh: Cleanup on eeh_subsystem_enabled
powerpc/eeh: Disable EEH on reboot
Kevin Hao (1):
powerpc: Set the correct ksp_limit on ppc32 when switching to irq stack
Kleber Sacilotto de Souza (2):
powerpc/pseries: Fix regression on PCI link speed
powerpc/pseries: Add Gen3 definitions for PCIE link speed
arch/powerpc/include/asm/eeh.h | 21 +++++++++++++--
arch/powerpc/include/asm/hugetlb.h | 2 +-
arch/powerpc/include/asm/pgtable-ppc64.h | 26 +++++++++++--------
arch/powerpc/include/asm/pgtable.h | 22 ++++++++++++++++
arch/powerpc/include/asm/vdso.h | 6 ++---
arch/powerpc/kernel/eeh.c | 32 ++++++++++++++++++-----
arch/powerpc/kernel/misc_32.S | 5 +++-
arch/powerpc/kernel/vdso32/vdso32_wrapper.S | 2 +-
arch/powerpc/kernel/vdso64/vdso64_wrapper.S | 2 +-
arch/powerpc/mm/pgtable_64.c | 12 +++++----
arch/powerpc/mm/subpage-prot.c | 2 +-
arch/powerpc/platforms/powernv/eeh-ioda.c | 32 +++++------------------
arch/powerpc/platforms/powernv/eeh-powernv.c | 2 +-
arch/powerpc/platforms/pseries/eeh_pseries.c | 2 +-
arch/powerpc/platforms/pseries/pci.c | 22 +++++++++++-----
include/asm-generic/pgtable.h | 39 ++++++++++++++++++++++++++++
mm/huge_memory.c | 9 ++-----
mm/mprotect.c | 25 ++++++------------
18 files changed, 172 insertions(+), 91 deletions(-)
^ permalink raw reply
* Re: [PATCH v3 3/3] powerpc/pseries: Report in kernel device tree update to drmgr
From: Benjamin Herrenschmidt @ 2014-02-17 0:22 UTC (permalink / raw)
To: Tyrel Datwyler; +Cc: nfont, linuxppc-dev
In-Reply-To: <1391212692-16217-4-git-send-email-tyreld@linux.vnet.ibm.com>
On Fri, 2014-01-31 at 15:58 -0800, Tyrel Datwyler wrote:
> Traditionally it has been drmgr's responsibilty to update the device tree
> through the /proc/ppc64/ofdt interface after a suspend/resume operation.
> This patchset however has modified suspend/resume ops to preform that update
> entirely in the kernel during the resume. Therefore, a mechanism is required
> for drmgr to determine who is responsible for the update. This patch adds a
> show function to the "hibernate" attribute that returns 1 if the kernel
> updates the device tree after the resume and 0 if drmgr is responsible.
This is not right.
We cannot change the kernel behaviour in a way that is incompatible with
existing userspace, and unless you can explain me why that is not the
case, it feels like this patch set does just that ....
What happens if you have an older drmgr which still does the update
itself ?
You can't just change user visible behaviours and interface without at
least explaining why it's ok to do so at the very least (and ensuring
that of course) without breaking existing userspace.
Now it's possible that the double update caused by this series is
harmless, in which case please explain it in the changeset, I certainly
can't assume it and if it's not, you'll need some other way for drmgr to
signal the kernel to indicate it supports the new behaviour before you
enable it.
Ben.
> Signed-off-by: Tyrel Datwyler <tyreld@linux.vnet.ibm.com>
> ---
> arch/powerpc/platforms/pseries/suspend.c | 25 ++++++++++++++++++++++++-
> 1 file changed, 24 insertions(+), 1 deletion(-)
>
> diff --git a/arch/powerpc/platforms/pseries/suspend.c b/arch/powerpc/platforms/pseries/suspend.c
> index 1d9c580..b87b978 100644
> --- a/arch/powerpc/platforms/pseries/suspend.c
> +++ b/arch/powerpc/platforms/pseries/suspend.c
> @@ -192,7 +192,30 @@ out:
> return rc;
> }
>
> -static DEVICE_ATTR(hibernate, S_IWUSR, NULL, store_hibernate);
> +#define USER_DT_UPDATE 0
> +#define KERN_DT_UPDATE 1
> +
> +/**
> + * show_hibernate - Report device tree update responsibilty
> + * @dev: subsys root device
> + * @attr: device attribute struct
> + * @buf: buffer
> + *
> + * Report whether a device tree update is performed by the kernel after a
> + * resume, or if drmgr must coordinate the update from user space.
> + *
> + * Return value:
> + * 0 if drmgr is to initiate update, and 1 otherwise
> + **/
> +static ssize_t show_hibernate(struct device *dev,
> + struct device_attribute *attr,
> + char *buf)
> +{
> + return sprintf(buf, "%d\n", KERN_DT_UPDATE);
> +}
> +
> +static DEVICE_ATTR(hibernate, S_IWUSR | S_IRUGO,
> + show_hibernate, store_hibernate);
>
> static struct bus_type suspend_subsys = {
> .name = "power",
^ permalink raw reply
* Re: Anyone using SysRQ key sequences on console serial port ?
From: Paul Gortmaker @ 2014-02-16 15:56 UTC (permalink / raw)
To: John Donnelly; +Cc: linuxppc-dev
In-Reply-To: <CAGtOQbTRSk32p7U=v9V9GPb_ro+WYbKLLCCfrmdypePcHA++mw@mail.gmail.com>
On Fri, Feb 14, 2014 at 3:42 PM, John Donnelly <john.d@servergy.com> wrote:
> Hi,
>
> I tried using the SysRq hotkey sequence on a serial console -
> 3.11.0-5-powerpc-e500mc system, by issuing a " break " and the system
> immediately wedges after displaying "SysRQ : HELP : " using both "Putty" and
> "Teraterm" terminal emulators. I know the system is dead because my ssh
> sessions stopped too.
Yes it does work -- or at least it _did_ work. Make sure your dts has an entry
compatible = "fsl,ns16550", "ns16550";
since that enables a workaround I'd added for a hardware errata relating
to sending breaks over the serial console. What you describe above
makes me think you aren't getting the workaround enabled.
Paul.
--
>
> http://en.wikipedia.org/wiki/Magic_SysRq_key .
>
>
>
>
> --
>
> Regards,
> John.
>
> --
>
> o Energy-efficiency is #1 reason data centers look to expand. -- Digital
> Realty Trust
> o Green Data Centers spending to increase 300% worldwide by 2016. -- Pike
> Research
> o Data Centers have become as vital to the functioni
> ng of society as power stations. -- The Economist
>
>
> _______________________________________________
> Linuxppc-dev mailing list
> Linuxppc-dev@lists.ozlabs.org
> https://lists.ozlabs.org/listinfo/linuxppc-dev
^ permalink raw reply
* Re: [PATCH v2 03/11] sysfs: create bin_attributes under the requested group
From: Greg Kroah-Hartman @ 2014-02-15 20:15 UTC (permalink / raw)
To: Cody P Schafer
Cc: Peter Zijlstra, LKML, Michael Ellerman, Ingo Molnar,
Paul Mackerras, Arnaldo Carvalho de Melo, Linux PPC
In-Reply-To: <1392415338-16288-4-git-send-email-cody@linux.vnet.ibm.com>
On Fri, Feb 14, 2014 at 02:02:07PM -0800, Cody P Schafer wrote:
> bin_attributes created/updated in create_files() (such as those listed
> via (struct device).attribute_groups) were not placed under the
> specified group, and instead appeared in the base kobj directory.
>
> Fix this by making bin_attributes use creating code similar to normal
> attributes.
>
> A quick grep shows that no one is using bin_attrs in a named attribute
> group yet, so we can do this without breaking anything in usespace.
>
> Note that I do not add is_visible() support to
> bin_attributes, though that could be done as well.
is_visible() support would be nice to add if you get a chance.
thanks,
greg k-h
^ permalink raw reply
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