Commit Graph

2018 Commits

Author SHA1 Message Date
Kuninori Morimoto
3d4b0149b4 of: property: use new of_graph functions
Current of_graph_get_next_endpoint() can be replaced by using
new of_graph_get_next_port().

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Link: https://lore.kernel.org/r/87iktib5t0.wl-kuninori.morimoto.gx@renesas.com
Signed-off-by: Rob Herring (Arm) <robh@kernel.org>
2024-10-24 16:35:48 -05:00
Kuninori Morimoto
58fe47d6ac of: property: add of_graph_get_next_port_endpoint()
We already have of_graph_get_next_endpoint(), but it is not
intuitive to use in some case.

(X)	node {
(Y)		ports {
(P0)			port@0 { endpoint { remote-endpoint = ...; };};
(P10)			port@1 { endpoint { remote-endpoint = ...; };
(P11)				 endpoint { remote-endpoint = ...; };};
(P2)			port@2 { endpoint { remote-endpoint = ...; };};
		};
	};

For example, if I want to handle port@1's 2 endpoints (= P10, P11),
I want to use like below

	P10 = of_graph_get_next_endpoint(port1, NULL);
	P11 = of_graph_get_next_endpoint(port1, P10);

But 1st one will be error, because of_graph_get_next_endpoint()
requested 1st parameter is "node" (X) or "ports" (Y), not but "port".
Below works well, but it will get P0

	P0 = of_graph_get_next_endpoint(node,  NULL);
	P0 = of_graph_get_next_endpoint(ports, NULL);

In other words, we can't handle P10/P11 directly via
of_graph_get_next_endpoint().

There is another non intuitive behavior on of_graph_get_next_endpoint().
In case of if I could get P10 pointer for some way, and if I want to
handle port@1 things by loop, I would like use it like below

	/*
	 * "ep" is now P10, and handle port1 things here,
	 * but we don't know how many endpoints port1 have.
	 *
	 * Because "ep" is non NULL now, we can use port1
	 * as of_graph_get_next_endpoint(port1, xxx)
	 */
	do {
		/* do something for port1 specific things here */
	} while (ep = of_graph_get_next_endpoint(port1, ep))

But it also not worked as I expected.
I expect it will be P10 -> P11 -> NULL,
but      it will be P10 -> P11 -> P2,    because
of_graph_get_next_endpoint() will fetch "endpoint" beyond the "port".
It is not useful for generic driver.

To handle endpoint more intuitive, create of_graph_get_next_port_endpoint()

	of_graph_get_next_port_endpoint(port1, NULL); // P10
	of_graph_get_next_port_endpoint(port1, P10);  // P11
	of_graph_get_next_port_endpoint(port1, P11);  // NULL

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Link: https://lore.kernel.org/r/87jzdyb5t5.wl-kuninori.morimoto.gx@renesas.com
Signed-off-by: Rob Herring (Arm) <robh@kernel.org>
2024-10-24 16:35:48 -05:00
Kuninori Morimoto
02ac5f9d6c of: property: add of_graph_get_next_port()
We have endpoint base functions
	- of_graph_get_next_endpoint()
	- of_graph_get_endpoint_count()
	- for_each_endpoint_of_node()

Here, for_each_endpoint_of_node() loop finds each endpoints

	ports {
		port@0 {
(1)			endpoint {...};
		};
		port@1 {
(2)			endpoint {...};
		};
		...
	};

In above case, it finds endpoint as (1) -> (2) -> ...

Basically, user/driver knows which port is used for what, but not in
all cases. For example on flexible/generic driver case, how many ports
are used is not fixed.

For example Sound Generic Card driver which is very flexible/generic and
used from many venders can't know how many ports are used, and used for
what, because it depends on each vender SoC and/or its used board.

And more, the port can have multi endpoints. For example Generic Sound
Card case, it supports many type of connection between CPU / Codec, and
some of them uses multi endpoint in one port. see below.

	ports {
(A)		port@0 {
(1)			endpoint@0 {...};
(2)			endpoint@1 {...};
		};
(B)		port@1 {
(3)			endpoint {...};
		};
		...
	};

Generic Sound Card want to handle each connection via "port" base instead
of "endpoint" base. But, it is very difficult to handle each "port" via
existing for_each_endpoint_of_node(). Because getting each "port" via
of_get_parent() from each "endpoint" doesn't work. For example in above
case, both (1) (2) endpoint has same "port" (= A).

Add "port" base functions.

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Link: https://lore.kernel.org/r/87ldyeb5t9.wl-kuninori.morimoto.gx@renesas.com
Signed-off-by: Rob Herring (Arm) <robh@kernel.org>
2024-10-24 16:35:48 -05:00
Sergey Shtylyov
2e030910fa of: module: remove strlen() call in of_modalias()
In of_modalias(), there's no dire need to call strlen() (and then add 1
to its result to account for the 'C' char preceding the compat string).
Replace that strlen() with snprintf() (currently below it) -- this way,
we always try to print the compat string but then only advance the str
and len parameters iff the compat string fit into the remaining buffer
space...

Signed-off-by: Sergey Shtylyov <s.shtylyov@omp.ru>
Link: https://lore.kernel.org/r/471418be-5d2f-4d14-bd9e-9e8f0526241f@omp.ru
Signed-off-by: Rob Herring (Arm) <robh@kernel.org>
2024-10-16 12:00:10 -05:00
Oreoluwa Babatunde
00c9a452a2 of: reserved_mem: Add code to dynamically allocate reserved_mem array
The reserved_mem array is statically allocated with a size of
MAX_RESERVED_REGIONS(64). Therefore, if the number of reserved_mem
regions exceeds this size, there will not be enough space to store
all the data.

Hence, extend the use of the static array by introducing a
dynamically allocated array based on the number of reserved memory
regions specified in the DT.

On architectures such as arm64, memblock allocated memory is not
writable until after the page tables have been setup. Hence, the
dynamic allocation of the reserved_mem array will need to be done only
after the page tables have been setup.

As a result, a temporary static array is still needed in the initial
stages to store the information of the dynamically-placed reserved
memory regions because the start address is selected only at run-time
and is not stored anywhere else.
It is not possible to wait until the reserved_mem array is allocated
because this is done after the page tables are setup and the reserved
memory regions need to be initialized before then.

After the reserved_mem array is allocated, all entries from the static
array is copied over to the new array, and the rest of the information
for the statically-placed reserved memory regions are read in from the
DT and stored in the new array as well.

Once the init process is completed, the temporary static array is
released back to the system because it is no longer needed. This is
achieved by marking it as __initdata.

Signed-off-by: Oreoluwa Babatunde <quic_obabatun@quicinc.com>
Link: https://lore.kernel.org/r/20241008220624.551309-3-quic_obabatun@quicinc.com
Signed-off-by: Rob Herring (Arm) <robh@kernel.org>
2024-10-15 10:34:33 -05:00
Oreoluwa Babatunde
8a6e02d0c0 of: reserved_mem: Restructure how the reserved memory regions are processed
Reserved memory regions defined in the devicetree can be broken up into
two groups:
i) Statically-placed reserved memory regions
i.e. regions defined with a static start address and size using the
     "reg" property.
ii) Dynamically-placed reserved memory regions.
i.e. regions defined by specifying an address range where they can be
     placed in memory using the "alloc_ranges" and "size" properties.

These regions are processed and set aside at boot time.
This is done in two stages as seen below:

Stage 1:
At this stage, fdt_scan_reserved_mem() scans through the child nodes of
the reserved_memory node using the flattened devicetree and does the
following:

1) If the node represents a statically-placed reserved memory region,
   i.e. if it is defined using the "reg" property:
   - Call memblock_reserve() or memblock_mark_nomap() as needed.
   - Add the information for that region into the reserved_mem array
     using fdt_reserved_mem_save_node().
     i.e. fdt_reserved_mem_save_node(node, name, base, size).

2) If the node represents a dynamically-placed reserved memory region,
   i.e. if it is defined using "alloc-ranges" and "size" properties:
   - Add the information for that region to the reserved_mem array with
     the starting address and size set to 0.
     i.e. fdt_reserved_mem_save_node(node, name, 0, 0).
   Note: This region is saved to the array with a starting address of 0
   because a starting address is not yet allocated for it.

Stage 2:
After iterating through all the reserved memory nodes and storing their
relevant information in the reserved_mem array,fdt_init_reserved_mem() is
called and does the following:

1) For statically-placed reserved memory regions:
   - Call the region specific init function using
     __reserved_mem_init_node().
2) For dynamically-placed reserved memory regions:
   - Call __reserved_mem_alloc_size() which is used to allocate memory
     for each of these regions, and mark them as nomap if they have the
     nomap property specified in the DT.
   - Call the region specific init function.

The current size of the resvered_mem array is 64 as is defined by
MAX_RESERVED_REGIONS. This means that there is a limitation of 64 for
how many reserved memory regions can be specified on a system.
As systems continue to grow more and more complex, the number of
reserved memory regions needed are also growing and are starting to hit
this 64 count limit, hence the need to make the reserved_mem array
dynamically sized (i.e. dynamically allocating memory for the
reserved_mem array using membock_alloc_*).

On architectures such as arm64, memory allocated using memblock is
writable only after the page tables have been setup. This means that if
the reserved_mem array is going to be dynamically allocated, it needs to
happen after the page tables have been setup, not before.

Since the reserved memory regions are currently being processed and
added to the array before the page tables are setup, there is a need to
change the order in which some of the processing is done to allow for
the reserved_mem array to be dynamically sized.

It is possible to process the statically-placed reserved memory regions
without needing to store them in the reserved_mem array until after the
page tables have been setup because all the information stored in the
array is readily available in the devicetree and can be referenced at
any time.
Dynamically-placed reserved memory regions on the other hand get
assigned a start address only at runtime, and hence need a place to be
stored once they are allocated since there is no other referrence to the
start address for these regions.

Hence this patch changes the processing order of the reserved memory
regions in the following ways:

Step 1:
fdt_scan_reserved_mem() scans through the child nodes of
the reserved_memory node using the flattened devicetree and does the
following:

1) If the node represents a statically-placed reserved memory region,
   i.e. if it is defined using the "reg" property:
   - Call memblock_reserve() or memblock_mark_nomap() as needed.

2) If the node represents a dynamically-placed reserved memory region,
   i.e. if it is defined using "alloc-ranges" and "size" properties:
   - Call __reserved_mem_alloc_size() which will:
     i) Allocate memory for the reserved region and call
     memblock_mark_nomap() as needed.
     ii) Call the region specific initialization function using
     fdt_init_reserved_mem_node().
     iii) Save the region information in the reserved_mem array using
     fdt_reserved_mem_save_node().

Step 2:
1) This stage of the reserved memory processing is now only used to add
   the statically-placed reserved memory regions into the reserved_mem
   array using fdt_scan_reserved_mem_reg_nodes(), as well as call their
   region specific initialization functions.

2) This step has also been moved to be after the page tables are
   setup. Moving this will allow us to replace the reserved_mem
   array with a dynamically sized array before storing the rest of
   these regions.

Signed-off-by: Oreoluwa Babatunde <quic_obabatun@quicinc.com>
Link: https://lore.kernel.org/r/20241008220624.551309-2-quic_obabatun@quicinc.com
Signed-off-by: Rob Herring (Arm) <robh@kernel.org>
2024-10-15 10:34:15 -05:00
Rob Herring (Arm)
d79616b04f of/address: Constify of_busses[] array and pointers
The of_busses array is fixed, so it and all struct of_bus pointers can
be const.

Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://lore.kernel.org/r/20241010-dt-const-v1-7-87a51f558425@kernel.org
Signed-off-by: Rob Herring (Arm) <robh@kernel.org>
2024-10-15 08:58:36 -05:00
Rob Herring (Arm)
3539089bcc of: Constify safe_name() kobject arg
The kobject is not modified by safe_name() function, so make it const.

Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://lore.kernel.org/r/20241010-dt-const-v1-6-87a51f558425@kernel.org
Signed-off-by: Rob Herring (Arm) <robh@kernel.org>
2024-10-15 08:58:36 -05:00
Rob Herring (Arm)
7118782dfb of: Constify of_changeset_entry function arguments
__of_changeset_entry_invert() and __of_changeset_entry_revert() don't
modify struct of_changeset_entry arguments, so they can be const.

Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://lore.kernel.org/r/20241010-dt-const-v1-5-87a51f558425@kernel.org
Signed-off-by: Rob Herring (Arm) <robh@kernel.org>
2024-10-15 08:58:36 -05:00
Rob Herring (Arm)
9c63fea9ac of: Constify struct property pointers
Most accesses to struct property do not modify it, so constify struct
property pointers where ever possible in the DT core code.

Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://lore.kernel.org/r/20241010-dt-const-v1-4-87a51f558425@kernel.org
Signed-off-by: Rob Herring (Arm) <robh@kernel.org>
2024-10-15 08:58:36 -05:00
Rob Herring (Arm)
ec8c2329da of: Constify struct device_node function arguments
Functions which don't change the refcount or otherwise modify struct
device_node can make struct device_node const.

Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://lore.kernel.org/r/20241010-dt-const-v1-3-87a51f558425@kernel.org
Signed-off-by: Rob Herring (Arm) <robh@kernel.org>
2024-10-15 08:58:36 -05:00
Ba Jing
29bf3116cf of:of_numa: remove unused macro
By reading the code, I found the marco DEFAULT_NODE is never
referenced in the code. Just remove it.

Signed-off-by: Ba Jing <bajing@cmss.chinamobile.com>
Link: https://lore.kernel.org/r/20241008060645.36071-1-bajing@cmss.chinamobile.com
Signed-off-by: Rob Herring (Arm) <robh@kernel.org>
2024-10-08 09:47:30 -05:00
Linus Torvalds
68e5c7d4ce Kbuild updates for v6.12
- Support cross-compiling linux-headers Debian package and kernel-devel
    RPM package
 
  - Add support for the linux-debug Pacman package
 
  - Improve module rebuilding speed by factoring out the common code to
    scripts/module-common.c
 
  - Separate device tree build rules into scripts/Makefile.dtbs
 
  - Add a new script to generate modules.builtin.ranges, which is useful
    for tracing tools to find symbols in built-in modules
 
  - Refactor Kconfig and misc tools
 
  - Update Kbuild and Kconfig documentation
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Merge tag 'kbuild-v6.12' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild

Pull Kbuild updates from Masahiro Yamada:

 - Support cross-compiling linux-headers Debian package and kernel-devel
   RPM package

 - Add support for the linux-debug Pacman package

 - Improve module rebuilding speed by factoring out the common code to
   scripts/module-common.c

 - Separate device tree build rules into scripts/Makefile.dtbs

 - Add a new script to generate modules.builtin.ranges, which is useful
   for tracing tools to find symbols in built-in modules

 - Refactor Kconfig and misc tools

 - Update Kbuild and Kconfig documentation

* tag 'kbuild-v6.12' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild: (51 commits)
  kbuild: doc: replace "gcc" in external module description
  kbuild: doc: describe the -C option precisely for external module builds
  kbuild: doc: remove the description about shipped files
  kbuild: doc: drop section numbering, use references in modules.rst
  kbuild: doc: throw out the local table of contents in modules.rst
  kbuild: doc: remove outdated description of the limitation on -I usage
  kbuild: doc: remove description about grepping CONFIG options
  kbuild: doc: update the description about Kbuild/Makefile split
  kbuild: remove unnecessary export of RUST_LIB_SRC
  kbuild: remove append operation on cmd_ld_ko_o
  kconfig: cache expression values
  kconfig: use hash table to reuse expressions
  kconfig: refactor expr_eliminate_dups()
  kconfig: add comments to expression transformations
  kconfig: change some expr_*() functions to bool
  scripts: move hash function from scripts/kconfig/ to scripts/include/
  kallsyms: change overflow variable to bool type
  kallsyms: squash output_address()
  kbuild: add install target for modules.builtin.ranges
  scripts: add verifier script for builtin module range data
  ...
2024-09-24 13:02:06 -07:00
Linus Torvalds
9ab27b0186 The core clk framework is left largely untouched this time around except for
support for the newly ratified DT property 'assigned-clock-rates-u64'. I'm much
 more excited about the support for loading DT overlays from KUnit tests so that
 we can test how the clk framework parses DT nodes during clk registration. The
 clk framework has some places that are highly DeviceTree dependent so this
 charts the path to extend the KUnit tests to cover even more framework code in
 the future. I've got some more tests on the list that use the DT overlay
 support, but they uncovered issues with clk unregistration that I'm still
 working on fixing.
 
 Outside the core, the clk driver update pile is dominated by Qualcomm and
 Renesas SoCs, making it fairly usual. Looking closer, there are fixes for
 things all over the place, like adding missing clk frequencies or moving
 defines for the number of clks out of DT binding headers into the drivers.
 There are even conversions of DT bindings to YAML and migration away from
 strings to describe clk topology. Overall it doesn't look unusual so I expect
 the new drivers to be where we'll have fixes in the coming weeks.
 
 Core:
  - KUnit tests for clk registration and fixed rate basic clk type
  - A couple more devm helpers, one consumer and one provider
  - Support for assigned-clock-rates-u64
 
 New Drivers:
  - Camera, display and GPU clocks on Qualcomm SM4450
  - Camera clocks on Qualcomm SM8150
  - Rockchip rk3576 clks
  - Microchip SAM9X7 clks
  - Renesas RZ/V2H(P) (R9A09G057) clks
 
 Updates:
  - Mark a bunch of struct freq_tbl const to reduce .data usage
  - Add Qualcomm MSM8226 A7PLL and Regera PLL support
  - Fix the Qualcomm Lucid 5LPE PLL configuration sequence to not reuse
    Trion, as they do differ
  - A number of fixes to the Qualcomm SM8550 display clock driver
  - Fold Qualcomm SM8650 display clock driver into SM8550 one
  - Add missing clocks and GDSCs needed for audio on Qualcomm MSM8998
  - Add missing USB MP resets, GPLL9, and QUPv3 DFS to Qualcomm SC8180X
  - Fix sdcc clk frequency tables on Qualcomm SC8180X
  - Drop the Qualcomm SM8150 gcc_cpuss_ahb_clk_src
  - Mark Qualcomm PCIe GDSCs as RET_ON on sm8250 and sm8540 to avoid them
    turning off during suspend
  - Use the HW_CTRL mechanism on Qualcomm SM8550 video clock controller
    GDSCs
  - Get rid of CLK_NR_CLKS defines in Rockchip DT binding headers
  - Some fixes for Rockchip rk3228 and rk3588
  - Exynos850: Add clock for Thermal Management Unit
  - Exynos7885: Fix duplicated ID in the header, add missing TOP PLLs and
    add clocks for USB block in the FSYS clock controller
  - ExynosAutov9: Add DPUM clock controller
  - ExynosAutov920: Add new (first) clock controllers: TOP and PERIC0
    (and a bit more complete bindings)
  - Use clk_hw pointer instead of fw_name for acm_aud_clk[0-1]_sel clocks
    on i.MX8Q as parents in ACM provider
  - Add i.MX95 NETCMIX support to the block control provider
  - Fix parents for ENETx_REF_SEL clocks on i.MX6UL
  - Add USB clocks, resets and power domains on Renesas RZ/G3S
  - Add Generic Timer (GTM), I2C Bus Interface (RIIC), SD/MMC Host
    Interface (SDHI) and Watchdog Timer (WDT) clocks and resets on
    Renesas RZ/V2H
  - Add PCIe, PWM, and CAN-FD clocks on Renesas R-Car V4M
  - Add LCD controller clocks and resets on Renesas RZ/G2UL
  - Add DMA clocks and resets on Renesas RZ/G3S
  - Add fractional multiplication PLL support on Renesas R-Car Gen4
  - Document support for the Renesas RZ/G2M v3.0 (r8a774a3) SoC
  - Support for the Microchip SAM9X7 SoC as follows:
  - Updates for the Microchip PLL drivers
  - DT binding documentation updates (for the new clock driver and for
    the slow clock controller that SAM9X7 is using)
  - A fix for the Microchip SAMA7G5 clock driver to avoid allocating more
    memory than necessary
  - Constify some Amlogic structs
  - Add SM1 eARC clocks for Amlogic
  - Introduce a symbol namespace for Amlogic clock specific symbols
  - Add reset controller support to audiomix block control on i.MX
  - Add CLK_SET_RATE_PARENT flag to all audiomix clocks and to
    i.MX7D lcdif_pixel_src clock
  - Fix parent clocks for earc_phy and audpll on i.MX8MP
  - Fix default parents for enet[12]_ref_sel on i.MX6UL
  - Add ops in composite 8M and 93 that allow no-op on disable
  - Add check for PCC present bit on composite 7ULP register
  - Fix fractional part for fracn-gppll on prepare in i.MX
  - Fix clock tree update for TF-A managed clocks on i.MX8M
  - Drop CLK_SET_PARENT_GATE for DRAM mux on i.MX7D
  - Add the SAI7 IPG clock for i.MX8MN
  - Mark the 'nand_usdhc_bus' clock as non-critical on i.MX8MM
  - Add LVDS bypass clocks on i.MX8QXP
  - Add muxes for MIPI and PHY ref clocks on i.MX
  - Reorder dc0_bypass0_clk, lcd_pxl and dc1_disp clocks on i.MX8QXP
  - Add 1039.5MHz and 800MHz rates to fracn-gppll table on i.MX
  - Add CLK_SET_RATE_PARENT for media_disp pixel clocks on i.MX8QXP
  - Add some module descriptions to the i.MX generic and the
    i.MXRT1050 driver
  - Fix return value for bypass for composite i.MX7ULP
  - Move Mediatek clk bindings to clock/
  - Convert some more clk bindings to dt schema
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Merge tag 'clk-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux

Pull clk updates from Stephen Boyd:
 "The core clk framework is left largely untouched this time around
  except for support for the newly ratified DT property
  'assigned-clock-rates-u64'.

  I'm much more excited about the support for loading DT overlays from
  KUnit tests so that we can test how the clk framework parses DT nodes
  during clk registration. The clk framework has some places that are
  highly DeviceTree dependent so this charts the path to extend the
  KUnit tests to cover even more framework code in the future. I've got
  some more tests on the list that use the DT overlay support, but they
  uncovered issues with clk unregistration that I'm still working on
  fixing.

  Outside the core, the clk driver update pile is dominated by Qualcomm
  and Renesas SoCs, making it fairly usual. Looking closer, there are
  fixes for things all over the place, like adding missing clk
  frequencies or moving defines for the number of clks out of DT binding
  headers into the drivers. There are even conversions of DT bindings to
  YAML and migration away from strings to describe clk topology. Overall
  it doesn't look unusual so I expect the new drivers to be where we'll
  have fixes in the coming weeks.

  Core:
   - KUnit tests for clk registration and fixed rate basic clk type
   - A couple more devm helpers, one consumer and one provider
   - Support for assigned-clock-rates-u64

  New Drivers:
   - Camera, display and GPU clocks on Qualcomm SM4450
   - Camera clocks on Qualcomm SM8150
   - Rockchip rk3576 clks
   - Microchip SAM9X7 clks
   - Renesas RZ/V2H(P) (R9A09G057) clks

  Updates:
   - Mark a bunch of struct freq_tbl const to reduce .data usage
   - Add Qualcomm MSM8226 A7PLL and Regera PLL support
   - Fix the Qualcomm Lucid 5LPE PLL configuration sequence to not reuse
     Trion, as they do differ
   - A number of fixes to the Qualcomm SM8550 display clock driver
   - Fold Qualcomm SM8650 display clock driver into SM8550 one
   - Add missing clocks and GDSCs needed for audio on Qualcomm MSM8998
   - Add missing USB MP resets, GPLL9, and QUPv3 DFS to Qualcomm SC8180X
   - Fix sdcc clk frequency tables on Qualcomm SC8180X
   - Drop the Qualcomm SM8150 gcc_cpuss_ahb_clk_src
   - Mark Qualcomm PCIe GDSCs as RET_ON on sm8250 and sm8540 to avoid
     them turning off during suspend
   - Use the HW_CTRL mechanism on Qualcomm SM8550 video clock controller
     GDSCs
   - Get rid of CLK_NR_CLKS defines in Rockchip DT binding headers
   - Some fixes for Rockchip rk3228 and rk3588
   - Exynos850: Add clock for Thermal Management Unit
   - Exynos7885: Fix duplicated ID in the header, add missing TOP PLLs
     and add clocks for USB block in the FSYS clock controller
   - ExynosAutov9: Add DPUM clock controller
   - ExynosAutov920: Add new (first) clock controllers: TOP and PERIC0
     (and a bit more complete bindings)
   - Use clk_hw pointer instead of fw_name for acm_aud_clk[0-1]_sel
     clocks on i.MX8Q as parents in ACM provider
   - Add i.MX95 NETCMIX support to the block control provider
   - Fix parents for ENETx_REF_SEL clocks on i.MX6UL
   - Add USB clocks, resets and power domains on Renesas RZ/G3S
   - Add Generic Timer (GTM), I2C Bus Interface (RIIC), SD/MMC Host
     Interface (SDHI) and Watchdog Timer (WDT) clocks and resets on
     Renesas RZ/V2H
   - Add PCIe, PWM, and CAN-FD clocks on Renesas R-Car V4M
   - Add LCD controller clocks and resets on Renesas RZ/G2UL
   - Add DMA clocks and resets on Renesas RZ/G3S
   - Add fractional multiplication PLL support on Renesas R-Car Gen4
   - Document support for the Renesas RZ/G2M v3.0 (r8a774a3) SoC
   - Support for the Microchip SAM9X7 SoC as follows:
   - Updates for the Microchip PLL drivers
   - DT binding documentation updates (for the new clock driver and for
     the slow clock controller that SAM9X7 is using)
   - A fix for the Microchip SAMA7G5 clock driver to avoid allocating
     more memory than necessary
   - Constify some Amlogic structs
   - Add SM1 eARC clocks for Amlogic
   - Introduce a symbol namespace for Amlogic clock specific symbols
   - Add reset controller support to audiomix block control on i.MX
   - Add CLK_SET_RATE_PARENT flag to all audiomix clocks and to i.MX7D
     lcdif_pixel_src clock
   - Fix parent clocks for earc_phy and audpll on i.MX8MP
   - Fix default parents for enet[12]_ref_sel on i.MX6UL
   - Add ops in composite 8M and 93 that allow no-op on disable
   - Add check for PCC present bit on composite 7ULP register
   - Fix fractional part for fracn-gppll on prepare in i.MX
   - Fix clock tree update for TF-A managed clocks on i.MX8M
   - Drop CLK_SET_PARENT_GATE for DRAM mux on i.MX7D
   - Add the SAI7 IPG clock for i.MX8MN
   - Mark the 'nand_usdhc_bus' clock as non-critical on i.MX8MM
   - Add LVDS bypass clocks on i.MX8QXP
   - Add muxes for MIPI and PHY ref clocks on i.MX
   - Reorder dc0_bypass0_clk, lcd_pxl and dc1_disp clocks on i.MX8QXP
   - Add 1039.5MHz and 800MHz rates to fracn-gppll table on i.MX
   - Add CLK_SET_RATE_PARENT for media_disp pixel clocks on i.MX8QXP
   - Add some module descriptions to the i.MX generic and the i.MXRT1050
     driver
   - Fix return value for bypass for composite i.MX7ULP
   - Move Mediatek clk bindings to clock/
   - Convert some more clk bindings to dt schema"

* tag 'clk-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux: (180 commits)
  clk: Switch back to struct platform_driver::remove()
  dt-bindings: clock, reset: fix top-comment indentation rk3576 headers
  clk: rockchip: remove unused mclk_pdm0_p/pdm0_p definitions
  clk: provide devm_clk_get_optional_enabled_with_rate()
  clk: fixed-rate: add devm_clk_hw_register_fixed_rate_parent_data()
  clk: imx6ul: fix clock parent for IMX6UL_CLK_ENETx_REF_SEL
  clk: renesas: r9a09g057: Add clock and reset entries for GTM/RIIC/SDHI/WDT
  clk: renesas: rzv2h: Add support for dynamic switching divider clocks
  clk: renesas: r9a08g045: Add clocks, resets and power domains for USB
  clk: rockchip: fix error for unknown clocks
  clk: rockchip: rk3588: drop unused code
  clk: rockchip: Add clock controller for the RK3576
  clk: rockchip: Add new pll type pll_rk3588_ddr
  dt-bindings: clock, reset: Add support for rk3576
  dt-bindings: clock: rockchip,rk3588-cru: drop unneeded assigned-clocks
  clk: rockchip: rk3588: Fix 32k clock name for pmu_24m_32k_100m_src_p
  clk: imx95: enable the clock of NETCMIX block control
  dt-bindings: clock: add RMII clock selection
  dt-bindings: clock: add i.MX95 NETCMIX block control
  clk: imx: imx8: Use clk_hw pointer for self registered clock in clk_parent_data
  ...
2024-09-23 15:01:48 -07:00
Linus Torvalds
617a814f14 ALong with the usual shower of singleton patches, notable patch series in
this pull request are:
 
 "Align kvrealloc() with krealloc()" from Danilo Krummrich.  Adds
 consistency to the APIs and behaviour of these two core allocation
 functions.  This also simplifies/enables Rustification.
 
 "Some cleanups for shmem" from Baolin Wang.  No functional changes - mode
 code reuse, better function naming, logic simplifications.
 
 "mm: some small page fault cleanups" from Josef Bacik.  No functional
 changes - code cleanups only.
 
 "Various memory tiering fixes" from Zi Yan.  A small fix and a little
 cleanup.
 
 "mm/swap: remove boilerplate" from Yu Zhao.  Code cleanups and
 simplifications and .text shrinkage.
 
 "Kernel stack usage histogram" from Pasha Tatashin and Shakeel Butt.  This
 is a feature, it adds new feilds to /proc/vmstat such as
 
     $ grep kstack /proc/vmstat
     kstack_1k 3
     kstack_2k 188
     kstack_4k 11391
     kstack_8k 243
     kstack_16k 0
 
 which tells us that 11391 processes used 4k of stack while none at all
 used 16k.  Useful for some system tuning things, but partivularly useful
 for "the dynamic kernel stack project".
 
 "kmemleak: support for percpu memory leak detect" from Pavel Tikhomirov.
 Teaches kmemleak to detect leaksage of percpu memory.
 
 "mm: memcg: page counters optimizations" from Roman Gushchin.  "3
 independent small optimizations of page counters".
 
 "mm: split PTE/PMD PT table Kconfig cleanups+clarifications" from David
 Hildenbrand.  Improves PTE/PMD splitlock detection, makes powerpc/8xx work
 correctly by design rather than by accident.
 
 "mm: remove arch_make_page_accessible()" from David Hildenbrand.  Some
 folio conversions which make arch_make_page_accessible() unneeded.
 
 "mm, memcg: cg2 memory{.swap,}.peak write handlers" fro David Finkel.
 Cleans up and fixes our handling of the resetting of the cgroup/process
 peak-memory-use detector.
 
 "Make core VMA operations internal and testable" from Lorenzo Stoakes.
 Rationalizaion and encapsulation of the VMA manipulation APIs.  With a
 view to better enable testing of the VMA functions, even from a
 userspace-only harness.
 
 "mm: zswap: fixes for global shrinker" from Takero Funaki.  Fix issues in
 the zswap global shrinker, resulting in improved performance.
 
 "mm: print the promo watermark in zoneinfo" from Kaiyang Zhao.  Fill in
 some missing info in /proc/zoneinfo.
 
 "mm: replace follow_page() by folio_walk" from David Hildenbrand.  Code
 cleanups and rationalizations (conversion to folio_walk()) resulting in
 the removal of follow_page().
 
 "improving dynamic zswap shrinker protection scheme" from Nhat Pham.  Some
 tuning to improve zswap's dynamic shrinker.  Significant reductions in
 swapin and improvements in performance are shown.
 
 "mm: Fix several issues with unaccepted memory" from Kirill Shutemov.
 Improvements to the new unaccepted memory feature,
 
 "mm/mprotect: Fix dax puds" from Peter Xu.  Implements mprotect on DAX
 PUDs.  This was missing, although nobody seems to have notied yet.
 
 "Introduce a store type enum for the Maple tree" from Sidhartha Kumar.
 Cleanups and modest performance improvements for the maple tree library
 code.
 
 "memcg: further decouple v1 code from v2" from Shakeel Butt.  Move more
 cgroup v1 remnants away from the v2 memcg code.
 
 "memcg: initiate deprecation of v1 features" from Shakeel Butt.  Adds
 various warnings telling users that memcg v1 features are deprecated.
 
 "mm: swap: mTHP swap allocator base on swap cluster order" from Chris Li.
 Greatly improves the success rate of the mTHP swap allocation.
 
 "mm: introduce numa_memblks" from Mike Rapoport.  Moves various disparate
 per-arch implementations of numa_memblk code into generic code.
 
 "mm: batch free swaps for zap_pte_range()" from Barry Song.  Greatly
 improves the performance of munmap() of swap-filled ptes.
 
 "support large folio swap-out and swap-in for shmem" from Baolin Wang.
 With this series we no longer split shmem large folios into simgle-page
 folios when swapping out shmem.
 
 "mm/hugetlb: alloc/free gigantic folios" from Yu Zhao.  Nice performance
 improvements and code reductions for gigantic folios.
 
 "support shmem mTHP collapse" from Baolin Wang.  Adds support for
 khugepaged's collapsing of shmem mTHP folios.
 
 "mm: Optimize mseal checks" from Pedro Falcato.  Fixes an mprotect()
 performance regression due to the addition of mseal().
 
 "Increase the number of bits available in page_type" from Matthew Wilcox.
 Increases the number of bits available in page_type!
 
 "Simplify the page flags a little" from Matthew Wilcox.  Many legacy page
 flags are now folio flags, so the page-based flags and their
 accessors/mutators can be removed.
 
 "mm: store zero pages to be swapped out in a bitmap" from Usama Arif.  An
 optimization which permits us to avoid writing/reading zero-filled zswap
 pages to backing store.
 
 "Avoid MAP_FIXED gap exposure" from Liam Howlett.  Fixes a race window
 which occurs when a MAP_FIXED operqtion is occurring during an unrelated
 vma tree walk.
 
 "mm: remove vma_merge()" from Lorenzo Stoakes.  Major rotorooting of the
 vma_merge() functionality, making ot cleaner, more testable and better
 tested.
 
 "misc fixups for DAMON {self,kunit} tests" from SeongJae Park.  Minor
 fixups of DAMON selftests and kunit tests.
 
 "mm: memory_hotplug: improve do_migrate_range()" from Kefeng Wang.  Code
 cleanups and folio conversions.
 
 "Shmem mTHP controls and stats improvements" from Ryan Roberts.  Cleanups
 for shmem controls and stats.
 
 "mm: count the number of anonymous THPs per size" from Barry Song.  Expose
 additional anon THP stats to userspace for improved tuning.
 
 "mm: finish isolate/putback_lru_page()" from Kefeng Wang: more folio
 conversions and removal of now-unused page-based APIs.
 
 "replace per-quota region priorities histogram buffer with per-context
 one" from SeongJae Park.  DAMON histogram rationalization.
 
 "Docs/damon: update GitHub repo URLs and maintainer-profile" from SeongJae
 Park.  DAMON documentation updates.
 
 "mm/vdpa: correct misuse of non-direct-reclaim __GFP_NOFAIL and improve
 related doc and warn" from Jason Wang: fixes usage of page allocator
 __GFP_NOFAIL and GFP_ATOMIC flags.
 
 "mm: split underused THPs" from Yu Zhao.  Improve THP=always policy - this
 was overprovisioning THPs in sparsely accessed memory areas.
 
 "zram: introduce custom comp backends API" frm Sergey Senozhatsky.  Add
 support for zram run-time compression algorithm tuning.
 
 "mm: Care about shadow stack guard gap when getting an unmapped area" from
 Mark Brown.  Fix up the various arch_get_unmapped_area() implementations
 to better respect guard areas.
 
 "Improve mem_cgroup_iter()" from Kinsey Ho.  Improve the reliability of
 mem_cgroup_iter() and various code cleanups.
 
 "mm: Support huge pfnmaps" from Peter Xu.  Extends the usage of huge
 pfnmap support.
 
 "resource: Fix region_intersects() vs add_memory_driver_managed()" from
 Huang Ying.  Fix a bug in region_intersects() for systems with CXL memory.
 
 "mm: hwpoison: two more poison recovery" from Kefeng Wang.  Teaches a
 couple more code paths to correctly recover from the encountering of
 poisoned memry.
 
 "mm: enable large folios swap-in support" from Barry Song.  Support the
 swapin of mTHP memory into appropriately-sized folios, rather than into
 single-page folios.
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Merge tag 'mm-stable-2024-09-20-02-31' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

Pull MM updates from Andrew Morton:
 "Along with the usual shower of singleton patches, notable patch series
  in this pull request are:

   - "Align kvrealloc() with krealloc()" from Danilo Krummrich. Adds
     consistency to the APIs and behaviour of these two core allocation
     functions. This also simplifies/enables Rustification.

   - "Some cleanups for shmem" from Baolin Wang. No functional changes -
     mode code reuse, better function naming, logic simplifications.

   - "mm: some small page fault cleanups" from Josef Bacik. No
     functional changes - code cleanups only.

   - "Various memory tiering fixes" from Zi Yan. A small fix and a
     little cleanup.

   - "mm/swap: remove boilerplate" from Yu Zhao. Code cleanups and
     simplifications and .text shrinkage.

   - "Kernel stack usage histogram" from Pasha Tatashin and Shakeel
     Butt. This is a feature, it adds new feilds to /proc/vmstat such as

       $ grep kstack /proc/vmstat
       kstack_1k 3
       kstack_2k 188
       kstack_4k 11391
       kstack_8k 243
       kstack_16k 0

     which tells us that 11391 processes used 4k of stack while none at
     all used 16k. Useful for some system tuning things, but
     partivularly useful for "the dynamic kernel stack project".

   - "kmemleak: support for percpu memory leak detect" from Pavel
     Tikhomirov. Teaches kmemleak to detect leaksage of percpu memory.

   - "mm: memcg: page counters optimizations" from Roman Gushchin. "3
     independent small optimizations of page counters".

   - "mm: split PTE/PMD PT table Kconfig cleanups+clarifications" from
     David Hildenbrand. Improves PTE/PMD splitlock detection, makes
     powerpc/8xx work correctly by design rather than by accident.

   - "mm: remove arch_make_page_accessible()" from David Hildenbrand.
     Some folio conversions which make arch_make_page_accessible()
     unneeded.

   - "mm, memcg: cg2 memory{.swap,}.peak write handlers" fro David
     Finkel. Cleans up and fixes our handling of the resetting of the
     cgroup/process peak-memory-use detector.

   - "Make core VMA operations internal and testable" from Lorenzo
     Stoakes. Rationalizaion and encapsulation of the VMA manipulation
     APIs. With a view to better enable testing of the VMA functions,
     even from a userspace-only harness.

   - "mm: zswap: fixes for global shrinker" from Takero Funaki. Fix
     issues in the zswap global shrinker, resulting in improved
     performance.

   - "mm: print the promo watermark in zoneinfo" from Kaiyang Zhao. Fill
     in some missing info in /proc/zoneinfo.

   - "mm: replace follow_page() by folio_walk" from David Hildenbrand.
     Code cleanups and rationalizations (conversion to folio_walk())
     resulting in the removal of follow_page().

   - "improving dynamic zswap shrinker protection scheme" from Nhat
     Pham. Some tuning to improve zswap's dynamic shrinker. Significant
     reductions in swapin and improvements in performance are shown.

   - "mm: Fix several issues with unaccepted memory" from Kirill
     Shutemov. Improvements to the new unaccepted memory feature,

   - "mm/mprotect: Fix dax puds" from Peter Xu. Implements mprotect on
     DAX PUDs. This was missing, although nobody seems to have notied
     yet.

   - "Introduce a store type enum for the Maple tree" from Sidhartha
     Kumar. Cleanups and modest performance improvements for the maple
     tree library code.

   - "memcg: further decouple v1 code from v2" from Shakeel Butt. Move
     more cgroup v1 remnants away from the v2 memcg code.

   - "memcg: initiate deprecation of v1 features" from Shakeel Butt.
     Adds various warnings telling users that memcg v1 features are
     deprecated.

   - "mm: swap: mTHP swap allocator base on swap cluster order" from
     Chris Li. Greatly improves the success rate of the mTHP swap
     allocation.

   - "mm: introduce numa_memblks" from Mike Rapoport. Moves various
     disparate per-arch implementations of numa_memblk code into generic
     code.

   - "mm: batch free swaps for zap_pte_range()" from Barry Song. Greatly
     improves the performance of munmap() of swap-filled ptes.

   - "support large folio swap-out and swap-in for shmem" from Baolin
     Wang. With this series we no longer split shmem large folios into
     simgle-page folios when swapping out shmem.

   - "mm/hugetlb: alloc/free gigantic folios" from Yu Zhao. Nice
     performance improvements and code reductions for gigantic folios.

   - "support shmem mTHP collapse" from Baolin Wang. Adds support for
     khugepaged's collapsing of shmem mTHP folios.

   - "mm: Optimize mseal checks" from Pedro Falcato. Fixes an mprotect()
     performance regression due to the addition of mseal().

   - "Increase the number of bits available in page_type" from Matthew
     Wilcox. Increases the number of bits available in page_type!

   - "Simplify the page flags a little" from Matthew Wilcox. Many legacy
     page flags are now folio flags, so the page-based flags and their
     accessors/mutators can be removed.

   - "mm: store zero pages to be swapped out in a bitmap" from Usama
     Arif. An optimization which permits us to avoid writing/reading
     zero-filled zswap pages to backing store.

   - "Avoid MAP_FIXED gap exposure" from Liam Howlett. Fixes a race
     window which occurs when a MAP_FIXED operqtion is occurring during
     an unrelated vma tree walk.

   - "mm: remove vma_merge()" from Lorenzo Stoakes. Major rotorooting of
     the vma_merge() functionality, making ot cleaner, more testable and
     better tested.

   - "misc fixups for DAMON {self,kunit} tests" from SeongJae Park.
     Minor fixups of DAMON selftests and kunit tests.

   - "mm: memory_hotplug: improve do_migrate_range()" from Kefeng Wang.
     Code cleanups and folio conversions.

   - "Shmem mTHP controls and stats improvements" from Ryan Roberts.
     Cleanups for shmem controls and stats.

   - "mm: count the number of anonymous THPs per size" from Barry Song.
     Expose additional anon THP stats to userspace for improved tuning.

   - "mm: finish isolate/putback_lru_page()" from Kefeng Wang: more
     folio conversions and removal of now-unused page-based APIs.

   - "replace per-quota region priorities histogram buffer with
     per-context one" from SeongJae Park. DAMON histogram
     rationalization.

   - "Docs/damon: update GitHub repo URLs and maintainer-profile" from
     SeongJae Park. DAMON documentation updates.

   - "mm/vdpa: correct misuse of non-direct-reclaim __GFP_NOFAIL and
     improve related doc and warn" from Jason Wang: fixes usage of page
     allocator __GFP_NOFAIL and GFP_ATOMIC flags.

   - "mm: split underused THPs" from Yu Zhao. Improve THP=always policy.
     This was overprovisioning THPs in sparsely accessed memory areas.

   - "zram: introduce custom comp backends API" frm Sergey Senozhatsky.
     Add support for zram run-time compression algorithm tuning.

   - "mm: Care about shadow stack guard gap when getting an unmapped
     area" from Mark Brown. Fix up the various arch_get_unmapped_area()
     implementations to better respect guard areas.

   - "Improve mem_cgroup_iter()" from Kinsey Ho. Improve the reliability
     of mem_cgroup_iter() and various code cleanups.

   - "mm: Support huge pfnmaps" from Peter Xu. Extends the usage of huge
     pfnmap support.

   - "resource: Fix region_intersects() vs add_memory_driver_managed()"
     from Huang Ying. Fix a bug in region_intersects() for systems with
     CXL memory.

   - "mm: hwpoison: two more poison recovery" from Kefeng Wang. Teaches
     a couple more code paths to correctly recover from the encountering
     of poisoned memry.

   - "mm: enable large folios swap-in support" from Barry Song. Support
     the swapin of mTHP memory into appropriately-sized folios, rather
     than into single-page folios"

* tag 'mm-stable-2024-09-20-02-31' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: (416 commits)
  zram: free secondary algorithms names
  uprobes: turn xol_area->pages[2] into xol_area->page
  uprobes: introduce the global struct vm_special_mapping xol_mapping
  Revert "uprobes: use vm_special_mapping close() functionality"
  mm: support large folios swap-in for sync io devices
  mm: add nr argument in mem_cgroup_swapin_uncharge_swap() helper to support large folios
  mm: fix swap_read_folio_zeromap() for large folios with partial zeromap
  mm/debug_vm_pgtable: Use pxdp_get() for accessing page table entries
  set_memory: add __must_check to generic stubs
  mm/vma: return the exact errno in vms_gather_munmap_vmas()
  memcg: cleanup with !CONFIG_MEMCG_V1
  mm/show_mem.c: report alloc tags in human readable units
  mm: support poison recovery from copy_present_page()
  mm: support poison recovery from do_cow_fault()
  resource, kunit: add test case for region_intersects()
  resource: make alloc_free_mem_region() works for iomem_resource
  mm: z3fold: deprecate CONFIG_Z3FOLD
  vfio/pci: implement huge_fault support
  mm/arm64: support large pfn mappings
  mm/x86: support large pfn mappings
  ...
2024-09-21 07:29:05 -07:00
Linus Torvalds
2a17bb8c20 Devicetree updates for v6.12:
DT Bindings:
 - Drop duplicate devices in trivial-devices.yaml
 
 - Add a common serial peripheral device schema and reference it in
   serial device schemas.
 
 - Convert nxp,lpc1850-wdt, zii,rave-wdt, ti,davinci-wdt,
   snps,archs-pct, fsl,bcsr, fsl,fpga-qixis-i2c, fsl,fpga-qixis,
   fsl,cpm-enet, fsl,cpm-mdio, fsl,ucc-hdlc, maxim,ds26522,
   aspeed,ast2400-cvic, aspeed,ast2400-vic, fsl,ftm-timer,
   ti,davinci-timer, fsl,rcpm, and qcom,ebi2 to DT schema
 
 - Add support for rockchip,rk3576-wdt, qcom,apss-wdt-sa8255p,
   fsl,imx8qm-irqsteer, qcom,pm6150-vib, qcom,sa8255p-pdc, isil,isl69260,
   ti,tps546d24, and lpc32xx DMA mux
 
 - Drop duplicate nvidia,tegra186-ccplex-cluster.yaml and
   mediatek,mt6795-sys-clock.yaml
 
 - Add arm,gic ESPI and EPPI interrupt type specifiers
 
 - Add another batch of legacy compatible strings which we have no
   intention of documenting
 
 - Add dmas/dma-names properties to FSL lcdif
 
 - Fix wakeup-source reference to m8921-keypad.yaml
 
 - Treewide fixes of typos in bindings
 
 DT Core:
 - Update dtc/libfdt to upstream version v1.7.0-95-gbcd02b523429
 
 - More conversions to scoped iterators and __free() initializer
 
 - Handle overflows in address resources on 32-bit systems
 
 - Extend extracting compatible strings in sources from function
   parameters
 
 - Use of_property_present() in DT unittest
 
 - Clean-up of_irq_to_resource() to use helpers
 
 - Support #msi-cells=<0> in of_msi_get_domain()
 
 - Improve the kerneldoc for of_property_match_string()
 
 - kselftest: Ignore nodes that have ancestors disabled
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Merge tag 'devicetree-for-6.12' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux

Pull devicetree updates from Rob Herring:
 "DT Bindings:

   - Drop duplicate devices in trivial-devices.yaml

   - Add a common serial peripheral device schema and reference it in
     serial device schemas.

   - Convert nxp,lpc1850-wdt, zii,rave-wdt, ti,davinci-wdt,
     snps,archs-pct, fsl,bcsr, fsl,fpga-qixis-i2c, fsl,fpga-qixis,
     fsl,cpm-enet, fsl,cpm-mdio, fsl,ucc-hdlc, maxim,ds26522,
     aspeed,ast2400-cvic, aspeed,ast2400-vic, fsl,ftm-timer,
     ti,davinci-timer, fsl,rcpm, and qcom,ebi2 to DT schema

   - Add support for rockchip,rk3576-wdt, qcom,apss-wdt-sa8255p,
     fsl,imx8qm-irqsteer, qcom,pm6150-vib, qcom,sa8255p-pdc,
     isil,isl69260, ti,tps546d24, and lpc32xx DMA mux

   - Drop duplicate nvidia,tegra186-ccplex-cluster.yaml and
     mediatek,mt6795-sys-clock.yaml

   - Add arm,gic ESPI and EPPI interrupt type specifiers

   - Add another batch of legacy compatible strings which we have no
     intention of documenting

   - Add dmas/dma-names properties to FSL lcdif

   - Fix wakeup-source reference to m8921-keypad.yaml

   - Treewide fixes of typos in bindings

  DT Core:

   - Update dtc/libfdt to upstream version v1.7.0-95-gbcd02b523429

   - More conversions to scoped iterators and __free() initializer

   - Handle overflows in address resources on 32-bit systems

   - Extend extracting compatible strings in sources from function
     parameters

   - Use of_property_present() in DT unittest

   - Clean-up of_irq_to_resource() to use helpers

   - Support #msi-cells=<0> in of_msi_get_domain()

   - Improve the kerneldoc for of_property_match_string()

   - kselftest: Ignore nodes that have ancestors disabled"

* tag 'devicetree-for-6.12' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux: (59 commits)
  dt-bindings: watchdog: Add rockchip,rk3576-wdt compatible
  dt-bindings: cpu: Drop duplicate nvidia,tegra186-ccplex-cluster.yaml
  dt-bindings: clock: mediatek: Drop duplicate mediatek,mt6795-sys-clock.yaml
  of/irq: Use helper to define resources
  of/irq: Make use of irq_get_trigger_type()
  dt-bindings: clk: vc5: Make SD/OE pin configuration properties not required
  drivers/of: Improve documentation for match_string
  of: property: Do some clean up with use of __free()
  dt-bindings: watchdog: qcom-wdt: document support on SA8255p
  dt-bindings: interrupt-controller: fsl,irqsteer: Document fsl,imx8qm-irqsteer
  dt-bindings: interrupt-controller: arm,gic: add ESPI and EPPI specifiers
  dt-bindings: dma: Add lpc32xx DMA mux binding
  dt-bindings: trivial-devices: Drop duplicate "maxim,max1237"
  dt-bindings: trivial-devices: Drop duplicate LM75 compatible devices
  dt-bindings: trivial-devices: Deprecate "ad,ad7414"
  dt-bindings: trivial-devices: Drop incorrect and duplicate at24 compatibles
  dt-bindings: wakeup-source: update reference to m8921-keypad.yaml
  dt-bindings: interrupt-controller: qcom-pdc: document support for SA8255p
  dt-bindings: Fix various typos
  of: address: Unify resource bounds overflow checking
  ...
2024-09-19 08:38:51 +02:00
Vasileios Amoiridis
0423caceb4 of/irq: Use helper to define resources
Resources definition can become simpler and more organised by using the
dedicated helpers.

Suggested-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Vasileios Amoiridis <vassilisamir@gmail.com>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Link: https://lore.kernel.org/r/20240912221605.27089-3-vassilisamir@gmail.com
Signed-off-by: Rob Herring (Arm) <robh@kernel.org>
2024-09-13 14:52:28 -05:00
Vasileios Amoiridis
ba3c92ba09 of/irq: Make use of irq_get_trigger_type()
Convert irqd_get_trigger_type(irq_get_irq_data(irq)) cases to the more
simple irq_get_trigger_type(irq).

Suggested-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Signed-off-by: Vasileios Amoiridis <vassilisamir@gmail.com>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Link: https://lore.kernel.org/r/20240912221605.27089-2-vassilisamir@gmail.com
Signed-off-by: Rob Herring (Arm) <robh@kernel.org>
2024-09-13 14:52:28 -05:00
Miquel Sabaté Solà
6417edb5d1 drivers/of: Improve documentation for match_string
The description of the function now explicitly states that it's
an *exact* match for the given string (i.e. not a submatch). It also
better states all the possible return values.

Signed-off-by: Miquel Sabaté Solà <mikisabate@gmail.com>
Link: https://lore.kernel.org/r/20240911204938.9172-1-mikisabate@gmail.com
Signed-off-by: Rob Herring (Arm) <robh@kernel.org>
2024-09-13 14:01:34 -05:00
Zhang Zekun
69b860034c of: property: Do some clean up with use of __free()
__free() provides a scoped of_node_put() functionality to put the
device_node automatically, and we don't need to call of_node_put()
directly. Let's simplify the code a bit with the use of __free().

Signed-off-by: Zhang Zekun <zhangzekun11@huawei.com>
Link: https://lore.kernel.org/r/20240830020626.115933-4-zhangzekun11@huawei.com
Signed-off-by: Rob Herring (Arm) <robh@kernel.org>
2024-09-13 14:01:34 -05:00
Thomas Weißschuh
1a52a094c2 of: address: Unify resource bounds overflow checking
The members "start" and "end" of struct resource are of type
"resource_size_t" which can be 32bit wide.
Values read from OF however are always 64bit wide.

Refactor the diff overflow checks into a helper function.
Also extend the checks to validate each calculation step.

Signed-off-by: Thomas Weißschuh <thomas.weissschuh@linutronix.de>
Link: https://lore.kernel.org/r/20240906-of-address-overflow-v1-1-19567aaa61da@linutronix.de
[robh: Fix to not return error on 0 sized resource]
Signed-off-by: Rob Herring (Arm) <robh@kernel.org>
2024-09-13 14:00:52 -05:00
Masahiro Yamada
e7e2941300 kbuild: split device tree build rules into scripts/Makefile.dtbs
scripts/Makefile.lib is included not only from scripts/Makefile.build
but also from scripts/Makefile.{modfinal,package,vmlinux,vmlinux_o},
where DT build rules are not required.

Split the DT build rules out to scripts/Makefile.dtbs, and include it
only when necessary.

While I was here, I added $(DT_TMP_SCHEMA) as a prerequisite of
$(multi-dtb-y).

Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Reviewed-by: Rob Herring (Arm) <robh@kernel.org>
2024-09-09 23:42:13 +09:00
Thomas Weißschuh
000f6d588a of: address: Report error on resource bounds overflow
The members "start" and "end" of struct resource are of type
"resource_size_t" which can be 32bit wide.
Values read from OF however are always 64bit wide.
Avoid silently truncating the value and instead return an error value.

This can happen on real systems when the DT was created for a
PAE-enabled kernel and a non-PAE kernel is actually running.
For example with an arm defconfig and "qemu-system-arm -M virt".

Link: https://bugs.launchpad.net/qemu/+bug/1790975
Signed-off-by: Thomas Weißschuh <thomas.weissschuh@linutronix.de>
Tested-by: Nam Cao <namcao@linutronix.de>
Reviewed-by: Nam Cao <namcao@linutronix.de>
Link: https://lore.kernel.org/r/20240905-of-resource-overflow-v1-1-0cd8bb92cc1f@linutronix.de
Cc: stable@vger.kernel.org
Signed-off-by: Rob Herring (Arm) <robh@kernel.org>
2024-09-05 08:19:47 -05:00
Mike Rapoport (Microsoft)
7e488677a5 of, numa: return -EINVAL when no numa-node-id is found
Currently of_numa_parse_memory_nodes() returns 0 if no "memory" node in
device tree contains "numa-node-id" property.  This makes of_numa_init()
to return "success" despite no NUMA nodes were actually parsed and set up.

arch_numa workarounds this by returning an error if numa_nodes_parsed is
empty.

numa_memblks however would WARN() in such case and since it will be used
by arch_numa shortly, such warning is not desirable.

Make sure of_numa_init() returns -EINVAL when no NUMA node information was
found in the device tree.

Link: https://lkml.kernel.org/r/20240807064110.1003856-24-rppt@kernel.org
Signed-off-by: Mike Rapoport (Microsoft) <rppt@kernel.org>
Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Tested-by: Jonathan Cameron <Jonathan.Cameron@huawei.com> [arm64 + CXL via QEMU]
Acked-by: Dan Williams <dan.j.williams@intel.com>
Acked-by: David Hildenbrand <david@redhat.com>
Cc: Alexander Gordeev <agordeev@linux.ibm.com>
Cc: Andreas Larsson <andreas@gaisler.com>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Christophe Leroy <christophe.leroy@csgroup.eu>
Cc: Dave Hansen <dave.hansen@linux.intel.com>
Cc: Davidlohr Bueso <dave@stgolabs.net>
Cc: David S. Miller <davem@davemloft.net>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Heiko Carstens <hca@linux.ibm.com>
Cc: Huacai Chen <chenhuacai@kernel.org>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Jiaxun Yang <jiaxun.yang@flygoat.com>
Cc: John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Palmer Dabbelt <palmer@dabbelt.com>
Cc: Rafael J. Wysocki <rafael@kernel.org>
Cc: Rob Herring (Arm) <robh@kernel.org>
Cc: Samuel Holland <samuel.holland@sifive.com>
Cc: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Vasily Gorbik <gor@linux.ibm.com>
Cc: Will Deacon <will@kernel.org>
Cc: Zi Yan <ziy@nvidia.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2024-09-03 21:15:32 -07:00
Mike Rapoport (Microsoft)
8748270821 mm: introduce numa_memblks
Move code dealing with numa_memblks from arch/x86 to mm/ and add Kconfig
options to let x86 select it in its Kconfig.

This code will be later reused by arch_numa.

No functional changes.

Link: https://lkml.kernel.org/r/20240807064110.1003856-18-rppt@kernel.org
Signed-off-by: Mike Rapoport (Microsoft) <rppt@kernel.org>
Tested-by: Zi Yan <ziy@nvidia.com> # for x86_64 and arm64
Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Tested-by: Jonathan Cameron <Jonathan.Cameron@huawei.com> [arm64 + CXL via QEMU]
Acked-by: Dan Williams <dan.j.williams@intel.com>
Acked-by: David Hildenbrand <david@redhat.com>
Cc: Alexander Gordeev <agordeev@linux.ibm.com>
Cc: Andreas Larsson <andreas@gaisler.com>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Christophe Leroy <christophe.leroy@csgroup.eu>
Cc: Dave Hansen <dave.hansen@linux.intel.com>
Cc: Davidlohr Bueso <dave@stgolabs.net>
Cc: David S. Miller <davem@davemloft.net>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Heiko Carstens <hca@linux.ibm.com>
Cc: Huacai Chen <chenhuacai@kernel.org>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Jiaxun Yang <jiaxun.yang@flygoat.com>
Cc: John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Palmer Dabbelt <palmer@dabbelt.com>
Cc: Rafael J. Wysocki <rafael@kernel.org>
Cc: Rob Herring (Arm) <robh@kernel.org>
Cc: Samuel Holland <samuel.holland@sifive.com>
Cc: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Vasily Gorbik <gor@linux.ibm.com>
Cc: Will Deacon <will@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2024-09-03 21:15:30 -07:00
Dave Airlie
27f5b729cb A revert for a previous TTM commit causing stuttering, 3 fixes for
vmwgfx related to buffer operations, a fix for video/aperture with
 non-VGA primary devices, and a preemption status fix for v3d
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Merge tag 'drm-misc-fixes-2024-08-29' of https://gitlab.freedesktop.org/drm/misc/kernel into drm-fixes

A revert for a previous TTM commit causing stuttering, 3 fixes for
vmwgfx related to buffer operations, a fix for video/aperture with
non-VGA primary devices, and a preemption status fix for v3d

Signed-off-by: Dave Airlie <airlied@redhat.com>

From: Maxime Ripard <mripard@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240829-efficient-swift-from-lemuria-f60c05@houat
2024-08-30 11:28:11 +10:00
Alex Deucher
b49420d6a1 video/aperture: optionally match the device in sysfb_disable()
In aperture_remove_conflicting_pci_devices(), we currently only
call sysfb_disable() on vga class devices.  This leads to the
following problem when the pimary device is not VGA compatible:

1. A PCI device with a non-VGA class is the boot display
2. That device is probed first and it is not a VGA device so
   sysfb_disable() is not called, but the device resources
   are freed by aperture_detach_platform_device()
3. Non-primary GPU has a VGA class and it ends up calling sysfb_disable()
4. NULL pointer dereference via sysfb_disable() since the resources
   have already been freed by aperture_detach_platform_device() when
   it was called by the other device.

Fix this by passing a device pointer to sysfb_disable() and checking
the device to determine if we should execute it or not.

v2: Fix build when CONFIG_SCREEN_INFO is not set
v3: Move device check into the mutex
    Drop primary variable in aperture_remove_conflicting_pci_devices()
    Drop __init on pci sysfb_pci_dev_is_enabled()

Fixes: 5ae3716cfd ("video/aperture: Only remove sysfb on the default vga pci device")
Cc: Javier Martinez Canillas <javierm@redhat.com>
Cc: Thomas Zimmermann <tzimmermann@suse.de>
Cc: Helge Deller <deller@gmx.de>
Cc: Sam Ravnborg <sam@ravnborg.org>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
Reviewed-by: Javier Martinez Canillas <javierm@redhat.com>
Reviewed-by: Thomas Zimmermann <tzimmermann@suse.de>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240821191135.829765-1-alexander.deucher@amd.com
2024-08-26 19:14:48 -04:00
Jinjie Ruan
97c5aac4f2 of: resolver: Simplify with scoped for each OF child loop
Use scoped for_each_child_of_node_scoped() when iterating over device
nodes to make code a bit simpler.

Signed-off-by: Jinjie Ruan <ruanjinjie@huawei.com>
Link: https://lore.kernel.org/r/20240826062408.2406734-4-ruanjinjie@huawei.com
Signed-off-by: Rob Herring (Arm) <robh@kernel.org>
2024-08-26 10:50:46 -05:00
Jinjie Ruan
bd7b58681a of/platform: Simplify with scoped for each OF child
Use scoped for_each_child_of_node_scoped() when iterating over device
nodes to make code a bit simpler.

Signed-off-by: Jinjie Ruan <ruanjinjie@huawei.com>
Link: https://lore.kernel.org/r/20240826062408.2406734-3-ruanjinjie@huawei.com
Signed-off-by: Rob Herring (Arm) <robh@kernel.org>
2024-08-26 10:50:46 -05:00
Jinjie Ruan
af7460d5e1 of: overlay: Simplify with scoped for each OF child loop
Use scoped for_each_child_of_node_scoped() when iterating over device
nodes to make code a bit simpler.

Signed-off-by: Jinjie Ruan <ruanjinjie@huawei.com>
Link: https://lore.kernel.org/r/20240826062408.2406734-2-ruanjinjie@huawei.com
Signed-off-by: Rob Herring (Arm) <robh@kernel.org>
2024-08-26 10:50:46 -05:00
Geert Uytterhoeven
39ab331ab5 of/irq: Refer to actual buffer size in of_irq_parse_one()
Replace two open-coded calculations of the buffer size by invocations of
sizeof() on the buffer itself, to make sure the code will always use the
actual buffer size.

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://lore.kernel.org/r/817c0b9626fd30790fc488c472a3398324cfcc0c.1724156125.git.geert+renesas@glider.be
Signed-off-by: Rob Herring (Arm) <robh@kernel.org>
2024-08-26 08:45:09 -05:00
Rob Herring (Arm)
d6ae27bb86 Merge branch 'dt/linus' into dt/next
Pull in fixes to apply further refactoring.
2024-08-26 08:44:21 -05:00
Andrew Jones
db8e81132c of/irq: Support #msi-cells=<0> in of_msi_get_domain
An 'msi-parent' property with a single entry and no accompanying
'#msi-cells' property is considered the legacy definition as opposed
to its definition after being expanded with commit 126b16e2ad
("Docs: dt: add generic MSI bindings"). However, the legacy
definition is completely compatible with the current definition and,
since of_phandle_iterator_next() tolerates missing and present-but-
zero *cells properties since commit e42ee61017 ("of: Let
of_for_each_phandle fallback to non-negative cell_count"), there's no
need anymore to special case the legacy definition in
of_msi_get_domain().

Indeed, special casing has turned out to be harmful, because, as of
commit 7c025238b4 ("dt-bindings: irqchip: Describe the IMX MU block
as a MSI controller"), MSI controller DT bindings have started
specifying '#msi-cells' as a required property (even when the value
must be zero) as an effort to make the bindings more explicit. But,
since the special casing of 'msi-parent' only uses the existence of
'#msi-cells' for its heuristic, and not whether or not it's also
nonzero, the legacy path is not taken. Furthermore, the path to
support the new, broader definition isn't taken either since that
path has been restricted to the platform-msi bus.

But, neither the definition of 'msi-parent' nor the definition of
'#msi-cells' is platform-msi-specific (the platform-msi bus was just
the first bus that needed '#msi-cells'), so remove both the special
casing and the restriction. The code removal also requires changing
to of_parse_phandle_with_optional_args() in order to ensure the
legacy (but compatible) use of 'msi-parent' remains supported. This
not only simplifies the code but also resolves an issue with PCI
devices finding their MSI controllers on riscv, as the riscv,imsics
binding requires '#msi-cells=<0>'.

Signed-off-by: Andrew Jones <ajones@ventanamicro.com>
Link: https://lore.kernel.org/r/20240817074107.31153-2-ajones@ventanamicro.com
Cc: stable@vger.kernel.org
Signed-off-by: Rob Herring (Arm) <robh@kernel.org>
2024-08-19 17:04:55 -05:00
Stefan Wiehler
b739dffa5d of/irq: Prevent device address out-of-bounds read in interrupt map walk
When of_irq_parse_raw() is invoked with a device address smaller than
the interrupt parent node (from #address-cells property), KASAN detects
the following out-of-bounds read when populating the initial match table
(dyndbg="func of_irq_parse_* +p"):

  OF: of_irq_parse_one: dev=/soc@0/picasso/watchdog, index=0
  OF:  parent=/soc@0/pci@878000000000/gpio0@17,0, intsize=2
  OF:  intspec=4
  OF: of_irq_parse_raw: ipar=/soc@0/pci@878000000000/gpio0@17,0, size=2
  OF:  -> addrsize=3
  ==================================================================
  BUG: KASAN: slab-out-of-bounds in of_irq_parse_raw+0x2b8/0x8d0
  Read of size 4 at addr ffffff81beca5608 by task bash/764

  CPU: 1 PID: 764 Comm: bash Tainted: G           O       6.1.67-484c613561-nokia_sm_arm64 #1
  Hardware name: Unknown Unknown Product/Unknown Product, BIOS 2023.01-12.24.03-dirty 01/01/2023
  Call trace:
   dump_backtrace+0xdc/0x130
   show_stack+0x1c/0x30
   dump_stack_lvl+0x6c/0x84
   print_report+0x150/0x448
   kasan_report+0x98/0x140
   __asan_load4+0x78/0xa0
   of_irq_parse_raw+0x2b8/0x8d0
   of_irq_parse_one+0x24c/0x270
   parse_interrupts+0xc0/0x120
   of_fwnode_add_links+0x100/0x2d0
   fw_devlink_parse_fwtree+0x64/0xc0
   device_add+0xb38/0xc30
   of_device_add+0x64/0x90
   of_platform_device_create_pdata+0xd0/0x170
   of_platform_bus_create+0x244/0x600
   of_platform_notify+0x1b0/0x254
   blocking_notifier_call_chain+0x9c/0xd0
   __of_changeset_entry_notify+0x1b8/0x230
   __of_changeset_apply_notify+0x54/0xe4
   of_overlay_fdt_apply+0xc04/0xd94
   ...

  The buggy address belongs to the object at ffffff81beca5600
   which belongs to the cache kmalloc-128 of size 128
  The buggy address is located 8 bytes inside of
   128-byte region [ffffff81beca5600, ffffff81beca5680)

  The buggy address belongs to the physical page:
  page:00000000230d3d03 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1beca4
  head:00000000230d3d03 order:1 compound_mapcount:0 compound_pincount:0
  flags: 0x8000000000010200(slab|head|zone=2)
  raw: 8000000000010200 0000000000000000 dead000000000122 ffffff810000c300
  raw: 0000000000000000 0000000000200020 00000001ffffffff 0000000000000000
  page dumped because: kasan: bad access detected

  Memory state around the buggy address:
   ffffff81beca5500: 04 fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
   ffffff81beca5580: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
  >ffffff81beca5600: 00 fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
                        ^
   ffffff81beca5680: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
   ffffff81beca5700: 00 00 00 00 00 00 fc fc fc fc fc fc fc fc fc fc
  ==================================================================
  OF:  -> got it !

Prevent the out-of-bounds read by copying the device address into a
buffer of sufficient size.

Signed-off-by: Stefan Wiehler <stefan.wiehler@nokia.com>
Link: https://lore.kernel.org/r/20240812100652.3800963-1-stefan.wiehler@nokia.com
Signed-off-by: Rob Herring (Arm) <robh@kernel.org>
2024-08-13 15:17:24 -06:00
Rob Herring (Arm)
1c668ea655 of: unittest: Use of_property_present()
Use of_property_present() to test for property presence rather than
of_find_property(). This is part of a larger effort to remove callers
of of_find_property() and similar functions. of_find_property() leaks
the DT struct property and data pointers which is a problem for
dynamically allocated nodes which may be freed.

Link: https://lore.kernel.org/r/20240731191312.1710417-10-robh@kernel.org
Signed-off-by: Rob Herring (Arm) <robh@kernel.org>
2024-08-06 13:22:13 -06:00
Stephen Boyd
5c9dd72d83 of: Add a KUnit test for overlays and test managed APIs
Test the KUnit test managed overlay APIs. Confirm that platform devices
are created and destroyed properly. This provides us confidence that the
test managed APIs work correctly and can be relied upon to provide tests
with fake platform devices and device nodes via overlays compiled into
the kernel image.

Cc: Rob Herring <robh@kernel.org>
Cc: Saravana Kannan <saravanak@google.com>
Cc: Daniel Latypov <dlatypov@google.com>
Cc: Brendan Higgins <brendan.higgins@linux.dev>
Reviewed-by: David Gow <davidgow@google.com>
Cc: Rae Moar <rmoar@google.com>
Reviewed-by: Rob Herring (Arm) <robh@kernel.org>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
Link: https://lore.kernel.org/r/20240718210513.3801024-5-sboyd@kernel.org
2024-07-29 15:33:12 -07:00
Stephen Boyd
6774e90f31 of: Add test managed wrappers for of_overlay_apply()/of_node_put()
Add test managed wrappers for of_overlay_apply() that automatically
removes the overlay when the test is finished. This API is intended for
use by KUnit tests that test code which relies on 'struct device_node's
and of_*() APIs.

KUnit tests will call of_overlay_apply_kunit() to load an overlay that's
been built into the kernel image. When the test is complete, the overlay
will be removed.

This has a few benefits:

 1) It keeps the tests hermetic because the overlay is removed when the
    test is complete. Tests won't even be aware that an overlay was
    loaded in another test.

 2) The overlay code can live right next to the unit test that loads it.
    The overlay and the unit test can be compiled into one kernel module
    if desired.

 3) We can test different device tree configurations by loading
    different overlays. The overlays can be written for a specific test,
    and there can be many of them loaded per-test without needing to jam
    all possible combinations into one DTB.

 4) It also allows KUnit to test device tree dependent code on any
    architecture, not just UML. This allows KUnit tests to test
    architecture specific device tree code.

There are some potential pitfalls though. Test authors need to be
careful to not overwrite properties in the live tree. The easiest way to
do this is to add and remove nodes with a 'kunit-' prefix, almost
guaranteeing that the same node won't be present in the tree loaded at
boot.

Suggested-by: Rob Herring <robh@kernel.org>
Cc: Rob Herring <robh@kernel.org>
Cc: Saravana Kannan <saravanak@google.com>
Reviewed-by: Rob Herring (Arm) <robh@kernel.org>
Reviewed-by: David Gow <davidgow@google.com>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
Link: https://lore.kernel.org/r/20240718210513.3801024-3-sboyd@kernel.org
2024-07-29 15:33:12 -07:00
Stephen Boyd
814cff595d of/platform: Allow overlays to create platform devices from the root node
We'd like to apply overlays to the root node in KUnit so we can test
platform devices created as children of the root node.

On some architectures (powerpc), the root node isn't marked with
OF_POPULATED_BUS. If an overlay tries to modify the root node on these
platforms it will fail, while on other platforms, such as ARM, it will
succeed. This is because the root node is marked with OF_POPULATED_BUS
by of_platform_default_populate_init() calling
of_platform_default_populate() with NULL as the first argument.

Loosen the requirement here so that platform devices can be created for
nodes created as children of the root node via DT overlays even if the
platform bus wasn't populated for the root node.

Reviewed-by: Rob Herring (Arm) <robh@kernel.org>
Cc: Saravana Kannan <saravanak@google.com>
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
[sboyd@kernel.org: Folded in condition fix]
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
Link: https://lore.kernel.org/r/20240718210513.3801024-2-sboyd@kernel.org
2024-07-29 15:33:12 -07:00
Linus Torvalds
ebcfbf02ab IOMMU Updates for Linux v6.11
- Core:
   * Support for the "ats-supported" device-tree property.
 
   * Removal of the 'ops' field from 'struct iommu_fwspec'.
 
   * Introduction of iommu_paging_domain_alloc() and partial conversion
     of existing users.
 
   * Introduce 'struct iommu_attach_handle' and provide corresponding
     IOMMU interfaces which will be used by the IOMMUFD subsystem.
 
   * Remove stale documentation.
 
   * Add missing MODULE_DESCRIPTION() macro.
 
   * Misc cleanups.
 
 - Allwinner Sun50i:
   * Ensure bypass mode is disabled on H616 SoCs.
 
   * Ensure page-tables are allocated below 4GiB for the 32-bit
     page-table walker.
 
   * Add new device-tree compatible strings.
 
 - AMD Vi:
   * Use try_cmpxchg64() instead of cmpxchg64() when updating pte.
 
 - Arm SMMUv2:
   * Print much more useful information on context faults.
 
   * Fix Qualcomm TBU probing when CONFIG_ARM_SMMU_QCOM_DEBUG=n.
 
   * Add new Qualcomm device-tree bindings.
 
 - Arm SMMUv3:
   * Support for hardware update of access/dirty bits and reporting via
     IOMMUFD.
 
   * More driver rework from Jason, this time updating the PASID/SVA support
     to prepare for full IOMMUFD support.
 
   * Add missing MODULE_DESCRIPTION() macro.
 
   * Minor fixes and cleanups.
 
 - NVIDIA Tegra:
 
   * Fix for benign fwspec initialisation issue exposed by rework on the
     core branch.
 
 - Intel VT-d:
 
   * Use try_cmpxchg64() instead of cmpxchg64() when updating pte.
 
   * Use READ_ONCE() to read volatile descriptor status.
 
   * Remove support for handling Execute-Requested requests.
 
   * Avoid calling iommu_domain_alloc().
 
   * Minor fixes and refactoring.
 
 - Qualcomm MSM:
 
   * Updates to the device-tree bindings.
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Merge tag 'iommu-updates-v6.11' of git://git.kernel.org/pub/scm/linux/kernel/git/iommu/linux

Pull iommu updates from Will Deacon:
 "Core:

   - Support for the "ats-supported" device-tree property

   - Removal of the 'ops' field from 'struct iommu_fwspec'

   - Introduction of iommu_paging_domain_alloc() and partial conversion
     of existing users

   - Introduce 'struct iommu_attach_handle' and provide corresponding
     IOMMU interfaces which will be used by the IOMMUFD subsystem

   - Remove stale documentation

   - Add missing MODULE_DESCRIPTION() macro

   - Misc cleanups

  Allwinner Sun50i:

   - Ensure bypass mode is disabled on H616 SoCs

   - Ensure page-tables are allocated below 4GiB for the 32-bit
     page-table walker

   - Add new device-tree compatible strings

  AMD Vi:

   - Use try_cmpxchg64() instead of cmpxchg64() when updating pte

  Arm SMMUv2:

   - Print much more useful information on context faults

   - Fix Qualcomm TBU probing when CONFIG_ARM_SMMU_QCOM_DEBUG=n

   - Add new Qualcomm device-tree bindings

  Arm SMMUv3:

   - Support for hardware update of access/dirty bits and reporting via
     IOMMUFD

   - More driver rework from Jason, this time updating the PASID/SVA
     support to prepare for full IOMMUFD support

   - Add missing MODULE_DESCRIPTION() macro

   - Minor fixes and cleanups

  NVIDIA Tegra:

   - Fix for benign fwspec initialisation issue exposed by rework on the
     core branch

  Intel VT-d:

   - Use try_cmpxchg64() instead of cmpxchg64() when updating pte

   - Use READ_ONCE() to read volatile descriptor status

   - Remove support for handling Execute-Requested requests

   - Avoid calling iommu_domain_alloc()

   - Minor fixes and refactoring

  Qualcomm MSM:

   - Updates to the device-tree bindings"

* tag 'iommu-updates-v6.11' of git://git.kernel.org/pub/scm/linux/kernel/git/iommu/linux: (72 commits)
  iommu/tegra-smmu: Pass correct fwnode to iommu_fwspec_init()
  iommu/vt-d: Fix identity map bounds in si_domain_init()
  iommu: Move IOMMU_DIRTY_NO_CLEAR define
  dt-bindings: iommu: Convert msm,iommu-v0 to yaml
  iommu/vt-d: Fix aligned pages in calculate_psi_aligned_address()
  iommu/vt-d: Limit max address mask to MAX_AGAW_PFN_WIDTH
  docs: iommu: Remove outdated Documentation/userspace-api/iommu.rst
  arm64: dts: fvp: Enable PCIe ATS for Base RevC FVP
  iommu/of: Support ats-supported device-tree property
  dt-bindings: PCI: generic: Add ats-supported property
  iommu: Remove iommu_fwspec ops
  OF: Simplify of_iommu_configure()
  ACPI: Retire acpi_iommu_fwspec_ops()
  iommu: Resolve fwspec ops automatically
  iommu/mediatek-v1: Clean up redundant fwspec checks
  RDMA/usnic: Use iommu_paging_domain_alloc()
  wifi: ath11k: Use iommu_paging_domain_alloc()
  wifi: ath10k: Use iommu_paging_domain_alloc()
  drm/msm: Use iommu_paging_domain_alloc()
  vhost-vdpa: Use iommu_paging_domain_alloc()
  ...
2024-07-19 09:59:58 -07:00
Linus Torvalds
0ffb8a4c96 Devicetree updates for v6.11:
DT Bindings:
 - Convert and add a bunch of IBM FSI related bindings
 
 - Add a new schema listing legacy compatibles which will (probably)
   never be documented. This will silence various checks warning about
   them.
 
 - Add bindings for Sierra Wireless mangOH Green SPI IoT interface, new
   Arm 2024 Cortex and Neoverse CPUs, QCom sc8180x PDC, QCom SDX75 GPI
   DMA, imx8mp/imx8qxp fsl,irqsteer, and Renesas RZ/G2UL CRU and CSI-2
   blocks
 
 - Convert Spreadtrum sprd-timer, FSL cpm_qe, FSL fsl,ls-scfg-msi, FSL
   q(b)man-*, FSL qoriq-mc, and img,pdc-wdt bindings to DT schema
 
 - Drop obsolete stericsson,abx500.txt
 
 DT core:
 - Update dtc to upstream version v1.7.0-93-g1df7b047fe43
 
 - Add support to run DT validation on DTs with applied overlays
 
 - Add helper for creating boolean properties in dynamic nodes and use
   that for dynamic PCI nodes
 
 - Clean-up early parsing of '#{address,size}-cells'
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Merge tag 'devicetree-for-6.11' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux

Pull devicetree updates from Rob Herring:
 "DT Bindings:

   - Convert and add a bunch of IBM FSI related bindings

   - Add a new schema listing legacy compatibles which will (probably)
     never be documented. This will silence various checks warning about
     them.

   - Add bindings for Sierra Wireless mangOH Green SPI IoT interface,
     new Arm 2024 Cortex and Neoverse CPUs, QCom sc8180x PDC, QCom SDX75
     GPI DMA, imx8mp/imx8qxp fsl,irqsteer, and Renesas RZ/G2UL CRU and
     CSI-2 blocks

   - Convert Spreadtrum sprd-timer, FSL cpm_qe, FSL fsl,ls-scfg-msi, FSL
     q(b)man-*, FSL qoriq-mc, and img,pdc-wdt bindings to DT schema

   - Drop obsolete stericsson,abx500.txt

  DT core:

   - Update dtc to upstream version v1.7.0-93-g1df7b047fe43

   - Add support to run DT validation on DTs with applied overlays

   - Add helper for creating boolean properties in dynamic nodes and use
     that for dynamic PCI nodes

   - Clean-up early parsing of '#{address,size}-cells'"

* tag 'devicetree-for-6.11' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux: (39 commits)
  dt-bindings: timer: sprd-timer: convert to YAML
  dt-bindings: incomplete-devices: document devices without bindings
  dt-bindings: trivial-devices: document the Sierra Wireless mangOH Green SPI IoT interface
  scripts/dtc: Update to upstream version v1.7.0-93-g1df7b047fe43
  dt-bindings: soc: fsl: Add fsl,ls1028a-reset for reset syscon node
  dt-bindings: soc: fsl: cpm_qe: convert to yaml format
  dt-bindings: i2c: i2c-fsi: Convert to json-schema
  dt-bindings: fsi: Document the FSI Hub Controller
  dt-bindings: fsi: Document the AST2700 FSI controller
  dt-bindings: fsi: ast2600-fsi-master: Convert to json-schema
  dt-bindings: fsi: ibm,i2cr-fsi-master: Reference common FSI controller
  dt-bindings: fsi: Document the FSI controller common properties
  dt-bindings: fsi: Document the IBM SBEFIFO engine
  dt-bindings: fsi: p9-occ: Convert to json-schema
  dt-bindings: fsi: Document the IBM SCOM engine
  dt-bindings: fsi: fsi2spi: Document SPI controller child nodes
  dt-bindings: interrupt-controller: convert fsl,ls-scfg-msi to yaml
  dt-bindings: soc: fsl: Convert q(b)man-* to yaml format
  dt-bindings: misc: fsl,qoriq-mc: convert to yaml format
  dt-bindings: drop stale Anson Huang from maintainers
  ...
2024-07-17 18:07:31 -07:00
Herve Codina
1e4368395f of: unittest: Add a test case for of_changeset_add_prop_bool()
Improve of_unittest_changeset_prop() to have a test case for the
newly introduced of_changeset_add_prop_bool().

Signed-off-by: Herve Codina <herve.codina@bootlin.com>
Link: https://lore.kernel.org/r/20240527161450.326615-17-herve.codina@bootlin.com
Signed-off-by: Rob Herring (Arm) <robh@kernel.org>
2024-07-08 17:40:30 -06:00
Herve Codina
f2b388d63e of: dynamic: Introduce of_changeset_add_prop_bool()
APIs to add some properties in a changeset exist but nothing to add a DT
boolean property (i.e. a property without any values).

Fill this lack with of_changeset_add_prop_bool().

Signed-off-by: Herve Codina <herve.codina@bootlin.com>
Link: https://lore.kernel.org/r/20240527161450.326615-16-herve.codina@bootlin.com
Signed-off-by: Rob Herring (Arm) <robh@kernel.org>
2024-07-08 17:40:30 -06:00
Herve Codina
aa5545ae62 of: unittest: Add tests for changeset properties adding
No test cases are present to test the of_changes_add_prop_*() function
family.

Add a new test to fill this lack.
Functions tested are:
  - of_changes_add_prop_string()
  - of_changes_add_prop_string_array()
  - of_changeset_add_prop_u32()
  - of_changeset_add_prop_u32_array()

Signed-off-by: Herve Codina <herve.codina@bootlin.com>
Link: https://lore.kernel.org/r/20240527161450.326615-15-herve.codina@bootlin.com
Signed-off-by: Rob Herring (Arm) <robh@kernel.org>
2024-07-08 17:40:30 -06:00
Herve Codina
6badc62f8f of: dynamic: Constify parameter in of_changeset_add_prop_string_array()
The str_array parameter has no reason to be an un-const array.
Indeed, elements of the 'str_array' array are not changed by the code.

Constify the 'str_array' array parameter.
With this const qualifier added, the following construction is allowed:
  static const char * const tab_str[] = { "string1", "string2" };
  of_changeset_add_prop_string_array(..., tab_str, ARRAY_SIZE(tab_str));

Signed-off-by: Herve Codina <herve.codina@bootlin.com>
Link: https://lore.kernel.org/r/20240527161450.326615-14-herve.codina@bootlin.com
Signed-off-by: Rob Herring (Arm) <robh@kernel.org>
2024-07-08 17:40:30 -06:00
Marc Zyngier
2cf6b7d15a of/irq: Disable "interrupt-map" parsing for PASEMI Nemo
Once again, we've broken PASEMI Nemo boards with its incomplete
"interrupt-map" translations. Commit 935df1bd40 ("of/irq: Factor out
parsing of interrupt-map parent phandle+args from of_irq_parse_raw()")
changed the behavior resulting in the existing work-around not taking
effect. Rework the work-around to just skip parsing "interrupt-map" up
front by using the of_irq_imap_abusers list.

Fixes: 935df1bd40 ("of/irq: Factor out parsing of interrupt-map parent phandle+args from of_irq_parse_raw()")
Reported-by: Christian Zigotzky <chzigotzky@xenosoft.de>
Signed-off-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/86ed8ba2sp.wl-maz@kernel.org
Signed-off-by: Rob Herring (Arm) <robh@kernel.org>
2024-07-08 15:42:20 -06:00
Robin Murphy
5f937bc48a OF: Simplify of_iommu_configure()
We no longer have a notion of partially-initialised fwspecs existing,
and we also no longer need to use an iommu_ops pointer to return status
to of_dma_configure(). Clean up the remains of those, which lends itself
to clarifying the logic around the dma_range_map allocation as well.

Acked-by: Rob Herring (Arm) <robh@kernel.org>
Tested-by: Jean-Philippe Brucker <jean-philippe@linaro.org>
Signed-off-by: Robin Murphy <robin.murphy@arm.com>
Link: https://lore.kernel.org/r/61972f88e31a6eda8bf5852f0853951164279a3c.1719919669.git.robin.murphy@arm.com
Signed-off-by: Will Deacon <will@kernel.org>
2024-07-04 14:36:04 +01:00
Rob Herring
596c29f3c8 of/fdt: avoid re-parsing '#{address,size}-cells' in of_fdt_limit_memory
Now that we initialize dt_root_addr_cells and dt_root_size_cells earlier,
use them and simplify of_fdt_limit_memory.

Link: https://lore.kernel.org/all/20180830190523.31474-3-robh@kernel.org/
Signed-off-by: Rob Herring <robh@kernel.org>
2024-05-31 08:33:54 -05:00
Rob Herring
554b662336 of/fdt: Scan the root node properties earlier
Scan the root node properties (#{size,address}-cells) earlier, so that
the dt_root_addr_cells and dt_root_size_cells variables are initialized
and can be used.

Link: https://lore.kernel.org/all/20180830190523.31474-2-robh@kernel.org/
Signed-off-by: Rob Herring <robh@kernel.org>
2024-05-31 08:33:54 -05:00
Marc Zyngier
e7985f4360 of: property: Fix fw_devlink handling of interrupt-map
Commit d976c6f4b3 ("of: property: Add fw_devlink support for
interrupt-map property") tried to do what it says on the tin,
but failed on a couple of points:

- it confuses bytes and cells. Not a huge deal, except when it
  comes to pointer arithmetic

- it doesn't really handle anything but interrupt-maps that have
  their parent #address-cells set to 0

The combinations of the two leads to some serious fun on my M1
box, with plenty of WARN-ON() firing all over the shop, and
amusing values being generated for interrupt specifiers.

Having 2 versions of parsing code for "interrupt-map" was a bad
idea. Now that the common parsing parts have been refactored
into of_irq_parse_imap_parent(), rework the code here to use it
instead and fix the pointer arithmetic.

Note that the dependency will be a bit different than the original code
when the interrupt-map points to another interrupt-map. In this case,
the original code would resolve to the final interrupt controller. Now
the dependency is the parent interrupt-map (which itself should have a
dependency to the parent). It is possible that a node with an
interrupt-map has no driver.

Fixes: d976c6f4b3 ("of: property: Add fw_devlink support for interrupt-map property")
Signed-off-by: Marc Zyngier <maz@kernel.org>
Co-developed-by: Rob Herring (Arm) <robh@kernel.org>
Cc: Saravana Kannan <saravanak@google.com>
Tested-by: Marc Zyngier <maz@kernel.org>
Tested-by: Anup Patel <apatel@ventanamicro.com>
Link: https://lore.kernel.org/r/20240529-dt-interrupt-map-fix-v2-2-ef86dc5bcd2a@kernel.org
Signed-off-by: Rob Herring (Arm) <robh@kernel.org>
2024-05-30 19:43:47 -05:00
Rob Herring (Arm)
935df1bd40 of/irq: Factor out parsing of interrupt-map parent phandle+args from of_irq_parse_raw()
Factor out the parsing of interrupt-map interrupt parent phandle and its
arg cells to a separate function, of_irq_parse_imap_parent(), so that it
can be used in other parsing scenarios (e.g. fw_devlink).

There was a refcount leak on non-matching entries when iterating thru
"interrupt-map" which is fixed.

Tested-by: Marc Zyngier <maz@kernel.org>
Tested-by: Anup Patel <apatel@ventanamicro.com>
Link: https://lore.kernel.org/r/20240529-dt-interrupt-map-fix-v2-1-ef86dc5bcd2a@kernel.org
Signed-off-by: Rob Herring (Arm) <robh@kernel.org>
2024-05-30 19:43:19 -05:00