[PATCH 0/2] OMAP IOMMU fixes to go with 5.4 OMAP IOMMU changes

[PATCH 0/2] OMAP IOMMU fixes to go with 5.4 OMAP IOMMU changes

[Suman Anna via iommu]

Hi Tony,

The following 2 patches need to go along with the recent "iommu/omap: misc
fixes" series [1] that is currently staged [2] for a 5.4 merge and available
in linux-next. That series added runtime pm callbacks in preparation for
the ti-sysc migration, but without adding the necessary platform data
callbacks for the existing functional MMUs on OMAP3, OMAP4 and OMAP5 SoCs.
These 2 patches add the same to maintain the functionality (l3_noc errors
are the visible symptom while enabling the MMUs without these patches).

OMAP4 and OMAP5 would also need another set of fixes related to the
breakage caused by the switch to clkctrl clocks as seen in [3].

These patches do have a dependency on the staged patches, so either you
submit a pull-request towards 5.4-rc2 using 5.4-rc1 baseline, or let
Joerg pick these through the arm/omap IOMMU branch for 5.4-rc1 itself.

Sakari/Laurent,
Appreciate it if you can check the OMAP3 ISP functionality on latest
linux-next with the second patch. I have verified the ISP MMU programming
only through an unit-test.

Tero,
I will be submitting another patch against OMAP IOMMU driver to skip the
pdata callbacks for ti-sysc in the next couple of days.

regards
Suman

[1] https://lore.kernel.org/linux-iommu/20190809153730.GF12930@8bytes.org/T/#mec99f8e8ed351689f4fcc76f4f000f9144a02b51
[2] https://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu.git/log/?h=arm/omap
[3] https://patchwork.kernel.org/patch/11082125/#22829477

Suman Anna (2):
  ARM: OMAP2+: Plug in device_enable/idle ops for IOMMUs
  ARM: OMAP2+: Add pdata for OMAP3 ISP IOMMU

 arch/arm/mach-omap2/pdata-quirks.c | 11 +++++++++++
 1 file changed, 11 insertions(+)

-- 
2.22.0

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[PATCH 1/2] ARM: OMAP2+: Plug in device_enable/idle ops for IOMMUs

[Suman Anna via iommu]

The OMAP IOMMU driver requires the device_enable/idle platform
data ops on all the IOMMU devices to be able to enable and disable
the clocks after commit db8918f61d51 ("iommu/omap: streamline
enable/disable through runtime pm callbacks"). Plug in these
pdata ops for all the existing IOMMUs through pdata quirks to
maintain functionality.

Signed-off-by: Suman Anna <s-anna@ti.com>
---
 arch/arm/mach-omap2/pdata-quirks.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/arch/arm/mach-omap2/pdata-quirks.c b/arch/arm/mach-omap2/pdata-quirks.c
index 6c6f8fce854e..dbe8d9718f70 100644
--- a/arch/arm/mach-omap2/pdata-quirks.c
+++ b/arch/arm/mach-omap2/pdata-quirks.c
@@ -89,6 +89,8 @@ static struct iommu_platform_data omap3_iommu_pdata = {
 	.reset_name = "mmu",
 	.assert_reset = omap_device_assert_hardreset,
 	.deassert_reset = omap_device_deassert_hardreset,
+	.device_enable = omap_device_enable,
+	.device_idle = omap_device_idle,
 };
 
 static int omap3_sbc_t3730_twl_callback(struct device *dev,
@@ -424,6 +426,8 @@ static struct iommu_platform_data omap4_iommu_pdata = {
 	.reset_name = "mmu_cache",
 	.assert_reset = omap_device_assert_hardreset,
 	.deassert_reset = omap_device_deassert_hardreset,
+	.device_enable = omap_device_enable,
+	.device_idle = omap_device_idle,
 };
 #endif
 
-- 
2.22.0

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[PATCH 2/2] ARM: OMAP2+: Add pdata for OMAP3 ISP IOMMU

[Suman Anna via iommu]

The OMAP3 ISP IOMMU does not have any reset lines, so it didn't
need any pdata previously. The OMAP IOMMU driver now requires the
platform data ops for device_enable/idle on all the IOMMU devices
after commit db8918f61d51 ("iommu/omap: streamline enable/disable
through runtime pm callbacks") to enable/disable the clocks properly
and maintain the reference count and the omap_hwmod state machine.
So, add these callbacks through iommu pdata quirks for the OMAP3
ISP IOMMU.

Signed-off-by: Suman Anna <s-anna@ti.com>
---
 arch/arm/mach-omap2/pdata-quirks.c | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/arch/arm/mach-omap2/pdata-quirks.c b/arch/arm/mach-omap2/pdata-quirks.c
index dbe8d9718f70..3d597fb962e9 100644
--- a/arch/arm/mach-omap2/pdata-quirks.c
+++ b/arch/arm/mach-omap2/pdata-quirks.c
@@ -93,6 +93,11 @@ static struct iommu_platform_data omap3_iommu_pdata = {
 	.device_idle = omap_device_idle,
 };
 
+static struct iommu_platform_data omap3_iommu_isp_pdata = {
+	.device_enable = omap_device_enable,
+	.device_idle = omap_device_idle,
+};
+
 static int omap3_sbc_t3730_twl_callback(struct device *dev,
 					   unsigned gpio,
 					   unsigned ngpio)
@@ -621,6 +626,8 @@ static struct of_dev_auxdata omap_auxdata_lookup[] = {
 #ifdef CONFIG_ARCH_OMAP3
 	OF_DEV_AUXDATA("ti,omap2-iommu", 0x5d000000, "5d000000.mmu",
 		       &omap3_iommu_pdata),
+	OF_DEV_AUXDATA("ti,omap2-iommu", 0x480bd400, "480bd400.mmu",
+		       &omap3_iommu_isp_pdata),
 	OF_DEV_AUXDATA("ti,omap3-smartreflex-core", 0x480cb000,
 		       "480cb000.smartreflex", &omap_sr_pdata[OMAP_SR_CORE]),
 	OF_DEV_AUXDATA("ti,omap3-smartreflex-mpu-iva", 0x480c9000,
-- 
2.22.0

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Re: [PATCH 1/2] ARM: OMAP2+: Plug in device_enable/idle ops for IOMMUs

[kbuild test robot]

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Hi Suman,

Thank you for the patch! Yet something to improve:

[auto build test ERROR on arm/for-next]
[cannot apply to v5.3-rc6 next-20190826]
[if your patch is applied to the wrong git tree, please drop us a note to help improve the system]

url:    https://github.com/0day-ci/linux/commits/Suman-Anna/OMAP-IOMMU-fixes-to-go-with-5-4-OMAP-IOMMU-changes/20190827-121217
base:   git://git.armlinux.org.uk/~rmk/linux-arm.git for-next
config: arm-allmodconfig (attached as .config)
compiler: arm-linux-gnueabi-gcc (GCC) 7.4.0
reproduce:
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # save the attached .config to linux build tree
        GCC_VERSION=7.4.0 make.cross ARCH=arm 

If you fix the issue, kindly add following tag
Reported-by: kbuild test robot <lkp@intel.com>

All error/warnings (new ones prefixed by >>):

>> arch/arm/mach-omap2/pdata-quirks.c:92:3: error: 'struct iommu_platform_data' has no member named 'device_enable'
     .device_enable = omap_device_enable,
      ^~~~~~~~~~~~~
>> arch/arm/mach-omap2/pdata-quirks.c:92:19: warning: excess elements in struct initializer
     .device_enable = omap_device_enable,
                      ^~~~~~~~~~~~~~~~~~
   arch/arm/mach-omap2/pdata-quirks.c:92:19: note: (near initialization for 'omap3_iommu_pdata')
>> arch/arm/mach-omap2/pdata-quirks.c:93:3: error: 'struct iommu_platform_data' has no member named 'device_idle'
     .device_idle = omap_device_idle,
      ^~~~~~~~~~~
   arch/arm/mach-omap2/pdata-quirks.c:93:17: warning: excess elements in struct initializer
     .device_idle = omap_device_idle,
                    ^~~~~~~~~~~~~~~~
   arch/arm/mach-omap2/pdata-quirks.c:93:17: note: (near initialization for 'omap3_iommu_pdata')
   arch/arm/mach-omap2/pdata-quirks.c:429:3: error: 'struct iommu_platform_data' has no member named 'device_enable'
     .device_enable = omap_device_enable,
      ^~~~~~~~~~~~~
   arch/arm/mach-omap2/pdata-quirks.c:429:19: warning: excess elements in struct initializer
     .device_enable = omap_device_enable,
                      ^~~~~~~~~~~~~~~~~~
   arch/arm/mach-omap2/pdata-quirks.c:429:19: note: (near initialization for 'omap4_iommu_pdata')
   arch/arm/mach-omap2/pdata-quirks.c:430:3: error: 'struct iommu_platform_data' has no member named 'device_idle'
     .device_idle = omap_device_idle,
      ^~~~~~~~~~~
   arch/arm/mach-omap2/pdata-quirks.c:430:17: warning: excess elements in struct initializer
     .device_idle = omap_device_idle,
                    ^~~~~~~~~~~~~~~~
   arch/arm/mach-omap2/pdata-quirks.c:430:17: note: (near initialization for 'omap4_iommu_pdata')

vim +92 arch/arm/mach-omap2/pdata-quirks.c

    87	
    88	static struct iommu_platform_data omap3_iommu_pdata = {
    89		.reset_name = "mmu",
    90		.assert_reset = omap_device_assert_hardreset,
    91		.deassert_reset = omap_device_deassert_hardreset,
  > 92		.device_enable = omap_device_enable,
  > 93		.device_idle = omap_device_idle,
    94	};
    95	

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Re: [PATCH 2/2] ARM: OMAP2+: Add pdata for OMAP3 ISP IOMMU

[kbuild test robot]

[-- Attachment #1: Type: text/plain, Size: 4428 bytes --]

Hi Suman,

Thank you for the patch! Yet something to improve:

[auto build test ERROR on arm/for-next]
[cannot apply to v5.3-rc6 next-20190827]
[if your patch is applied to the wrong git tree, please drop us a note to help improve the system]

url:    https://github.com/0day-ci/linux/commits/Suman-Anna/OMAP-IOMMU-fixes-to-go-with-5-4-OMAP-IOMMU-changes/20190827-121217
base:   git://git.armlinux.org.uk/~rmk/linux-arm.git for-next
config: arm-allmodconfig (attached as .config)
compiler: arm-linux-gnueabi-gcc (GCC) 7.4.0
reproduce:
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # save the attached .config to linux build tree
        GCC_VERSION=7.4.0 make.cross ARCH=arm 

If you fix the issue, kindly add following tag
Reported-by: kbuild test robot <lkp@intel.com>

All errors (new ones prefixed by >>):

   arch/arm/mach-omap2/pdata-quirks.c:92:3: error: 'struct iommu_platform_data' has no member named 'device_enable'
     .device_enable = omap_device_enable,
      ^~~~~~~~~~~~~
   arch/arm/mach-omap2/pdata-quirks.c:92:19: warning: excess elements in struct initializer
     .device_enable = omap_device_enable,
                      ^~~~~~~~~~~~~~~~~~
   arch/arm/mach-omap2/pdata-quirks.c:92:19: note: (near initialization for 'omap3_iommu_pdata')
   arch/arm/mach-omap2/pdata-quirks.c:93:3: error: 'struct iommu_platform_data' has no member named 'device_idle'
     .device_idle = omap_device_idle,
      ^~~~~~~~~~~
   arch/arm/mach-omap2/pdata-quirks.c:93:17: warning: excess elements in struct initializer
     .device_idle = omap_device_idle,
                    ^~~~~~~~~~~~~~~~
   arch/arm/mach-omap2/pdata-quirks.c:93:17: note: (near initialization for 'omap3_iommu_pdata')
   arch/arm/mach-omap2/pdata-quirks.c:97:3: error: 'struct iommu_platform_data' has no member named 'device_enable'
     .device_enable = omap_device_enable,
      ^~~~~~~~~~~~~
>> arch/arm/mach-omap2/pdata-quirks.c:97:19: error: initialization from incompatible pointer type [-Werror=incompatible-pointer-types]
     .device_enable = omap_device_enable,
                      ^~~~~~~~~~~~~~~~~~
   arch/arm/mach-omap2/pdata-quirks.c:97:19: note: (near initialization for 'omap3_iommu_isp_pdata.reset_name')
   arch/arm/mach-omap2/pdata-quirks.c:98:3: error: 'struct iommu_platform_data' has no member named 'device_idle'
     .device_idle = omap_device_idle,
      ^~~~~~~~~~~
   arch/arm/mach-omap2/pdata-quirks.c:98:17: error: initialization from incompatible pointer type [-Werror=incompatible-pointer-types]
     .device_idle = omap_device_idle,
                    ^~~~~~~~~~~~~~~~
   arch/arm/mach-omap2/pdata-quirks.c:98:17: note: (near initialization for 'omap3_iommu_isp_pdata.assert_reset')
   arch/arm/mach-omap2/pdata-quirks.c:434:3: error: 'struct iommu_platform_data' has no member named 'device_enable'
     .device_enable = omap_device_enable,
      ^~~~~~~~~~~~~
   arch/arm/mach-omap2/pdata-quirks.c:434:19: warning: excess elements in struct initializer
     .device_enable = omap_device_enable,
                      ^~~~~~~~~~~~~~~~~~
   arch/arm/mach-omap2/pdata-quirks.c:434:19: note: (near initialization for 'omap4_iommu_pdata')
   arch/arm/mach-omap2/pdata-quirks.c:435:3: error: 'struct iommu_platform_data' has no member named 'device_idle'
     .device_idle = omap_device_idle,
      ^~~~~~~~~~~
   arch/arm/mach-omap2/pdata-quirks.c:435:17: warning: excess elements in struct initializer
     .device_idle = omap_device_idle,
                    ^~~~~~~~~~~~~~~~
   arch/arm/mach-omap2/pdata-quirks.c:435:17: note: (near initialization for 'omap4_iommu_pdata')
   cc1: some warnings being treated as errors

vim +97 arch/arm/mach-omap2/pdata-quirks.c

    87	
    88	static struct iommu_platform_data omap3_iommu_pdata = {
    89		.reset_name = "mmu",
    90		.assert_reset = omap_device_assert_hardreset,
    91		.deassert_reset = omap_device_deassert_hardreset,
    92		.device_enable = omap_device_enable,
  > 93		.device_idle = omap_device_idle,
    94	};
    95	
    96	static struct iommu_platform_data omap3_iommu_isp_pdata = {
  > 97		.device_enable = omap_device_enable,
    98		.device_idle = omap_device_idle,
    99	};
   100	

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Re: [PATCH 0/2] OMAP IOMMU fixes to go with 5.4 OMAP IOMMU changes

[Suman Anna via iommu]

Hi Tony,

On 8/26/19 7:14 PM, Suman Anna wrote:
> Hi Tony,
> 
> The following 2 patches need to go along with the recent "iommu/omap: misc
> fixes" series [1] that is currently staged [2] for a 5.4 merge and available
> in linux-next. That series added runtime pm callbacks in preparation for
> the ti-sysc migration, but without adding the necessary platform data
> callbacks for the existing functional MMUs on OMAP3, OMAP4 and OMAP5 SoCs.
> These 2 patches add the same to maintain the functionality (l3_noc errors
> are the visible symptom while enabling the MMUs without these patches).
> 
> OMAP4 and OMAP5 would also need another set of fixes related to the
> breakage caused by the switch to clkctrl clocks as seen in [3].
> 
> These patches do have a dependency on the staged patches, so either you
> submit a pull-request towards 5.4-rc2 using 5.4-rc1 baseline, or let
> Joerg pick these through the arm/omap IOMMU branch for 5.4-rc1 itself.
> 
> Sakari/Laurent,
> Appreciate it if you can check the OMAP3 ISP functionality on latest
> linux-next with the second patch. I have verified the ISP MMU programming
> only through an unit-test.
> 
> Tero,
> I will be submitting another patch against OMAP IOMMU driver to skip the
> pdata callbacks for ti-sysc in the next couple of days.
> 
> regards
> Suman
> 
> [1] https://lore.kernel.org/linux-iommu/20190809153730.GF12930@8bytes.org/T/#mec99f8e8ed351689f4fcc76f4f000f9144a02b51
> [2] https://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu.git/log/?h=arm/omap
> [3] https://patchwork.kernel.org/patch/11082125/#22829477
> 
> Suman Anna (2):
>   ARM: OMAP2+: Plug in device_enable/idle ops for IOMMUs
>   ARM: OMAP2+: Add pdata for OMAP3 ISP IOMMU

Can you please pick these patches up for 5.4-rc cycle? The OMAP IOMMU
changes that went in for 5.4-rc1 need the pdata to be plugged in.

regards
Suman

> 
>  arch/arm/mach-omap2/pdata-quirks.c | 11 +++++++++++
>  1 file changed, 11 insertions(+)
> 

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Re: [PATCH 0/2] OMAP IOMMU fixes to go with 5.4 OMAP IOMMU changes

[Tony Lindgren]

* Suman Anna <s-anna@ti.com> [191017 23:00]:
> Hi Tony,
> 
> On 8/26/19 7:14 PM, Suman Anna wrote:
> > Hi Tony,
> > 
> > The following 2 patches need to go along with the recent "iommu/omap: misc
> > fixes" series [1] that is currently staged [2] for a 5.4 merge and available
> > in linux-next. That series added runtime pm callbacks in preparation for
> > the ti-sysc migration, but without adding the necessary platform data
> > callbacks for the existing functional MMUs on OMAP3, OMAP4 and OMAP5 SoCs.
> > These 2 patches add the same to maintain the functionality (l3_noc errors
> > are the visible symptom while enabling the MMUs without these patches).
> > 
> > OMAP4 and OMAP5 would also need another set of fixes related to the
> > breakage caused by the switch to clkctrl clocks as seen in [3].
> > 
> > These patches do have a dependency on the staged patches, so either you
> > submit a pull-request towards 5.4-rc2 using 5.4-rc1 baseline, or let
> > Joerg pick these through the arm/omap IOMMU branch for 5.4-rc1 itself.
> > 
> > Sakari/Laurent,
> > Appreciate it if you can check the OMAP3 ISP functionality on latest
> > linux-next with the second patch. I have verified the ISP MMU programming
> > only through an unit-test.
> > 
> > Tero,
> > I will be submitting another patch against OMAP IOMMU driver to skip the
> > pdata callbacks for ti-sysc in the next couple of days.
> > 
> > regards
> > Suman
> > 
> > [1] https://lore.kernel.org/linux-iommu/20190809153730.GF12930@8bytes.org/T/#mec99f8e8ed351689f4fcc76f4f000f9144a02b51
> > [2] https://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu.git/log/?h=arm/omap
> > [3] https://patchwork.kernel.org/patch/11082125/#22829477
> > 
> > Suman Anna (2):
> >   ARM: OMAP2+: Plug in device_enable/idle ops for IOMMUs
> >   ARM: OMAP2+: Add pdata for OMAP3 ISP IOMMU
> 
> Can you please pick these patches up for 5.4-rc cycle? The OMAP IOMMU
> changes that went in for 5.4-rc1 need the pdata to be plugged in.

Oh OK. Sorry for missing these, I untagged them earlier as they
produced kbuilder test failures as the dependencies were
missing earlier.

Applying both into fixes.

Regards,

Tony
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