WSL2-Linux-Kernel/drivers/bcma
Linus Torvalds 60ac35bf6b Interrupt subsystem updates:
- Core code:
 
     - Provide a generic wrapper which can be utilized in drivers to handle
       the problem of force threaded demultiplex interrupts on RT enabled
       kernels. This avoids conditionals and horrible quirks in drivers all
       over the place.
 
     - Fix up affected pinctrl and GPIO drivers to make them cleanly RT safe.
 
   - Interrupt drivers:
 
     - A new driver for the FSL MU platform specific MSI implementation.
 
     - Make irqchip_init() available for pure ACPI based systems.
 
     - Provide a functional DT binding for the Realtek RTL interrupt chip.
 
     - The usual DT updates and small code improvements all over the place.
 -----BEGIN PGP SIGNATURE-----
 
 iQJHBAABCgAxFiEEQp8+kY+LLUocC4bMphj1TA10mKEFAmNGxRYTHHRnbHhAbGlu
 dXRyb25peC5kZQAKCRCmGPVMDXSYoWJyD/0emJAlIuD0DzkEkoAtnHSq7eyGFMpI
 PFMyZ0IYXlVWuxEmQMyd7E9M+fmlRqnnhErg6x7jPW1bKzoyIn1A7eNE/cvhXPru
 BiTy6g2o7pNegUh5bQrE8p0Yyq6/HsVO4YyE3RGxpUQVh/qwB+RKnzUY6RfDj87z
 naQx10+15b+76SXvTQpIrvQTWhfTswk9un2MYDkjHctfVgjcnb/8dTPQuXsZrdTQ
 VBWWwjLpCKcqqQS1e9MQqmQKpVqGs/DGW8XNTPk3jI4QF1fIHjhNdcoI51/lM4Ri
 r912FPE8R48FS9g0dQgpMxGmHjikYpf3rXXosn8uyWkt5zNy6CXOEEg3DRIoAIdg
 czKve+bgZZXUK/QcSSdPuPthBoLKQCG5MZsVFNF8IArmPCHaiYcOQBe7pel3U4cc
 MpQe9yUXJI40XgwTAyAOlidjmD69384nEhzbI5d/AfJI5ssdXcBMrFN/xEeBDWdz
 Dg2+Yle9HNglxBA6E3GX3yiaCQJxHFhKMnqd1zhxWjXFRzkfGF7bBpRj1j+vXnzN
 ap/wMQuMlOWriWsH3UkZtFrC4PvgByGVfzlzYA076CjutyYfQolQ8k0bLHnp2VSu
 VWUn4WATfaxJcqij7vyI9BYtFXdrB/yYhFasDBepQbDgiy8WEAmX+bObvXWs9XYa
 UGVCNGsYx2TKMA==
 =2ok5
 -----END PGP SIGNATURE-----

Merge tag 'irq-core-2022-10-12' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull interrupt updates from Thomas Gleixner:
 "Core code:

   - Provide a generic wrapper which can be utilized in drivers to
     handle the problem of force threaded demultiplex interrupts on RT
     enabled kernels. This avoids conditionals and horrible quirks in
     drivers all over the place

   - Fix up affected pinctrl and GPIO drivers to make them cleanly RT
     safe

  Interrupt drivers:

   - A new driver for the FSL MU platform specific MSI implementation

   - Make irqchip_init() available for pure ACPI based systems

   - Provide a functional DT binding for the Realtek RTL interrupt chip

   - The usual DT updates and small code improvements all over the
     place"

* tag 'irq-core-2022-10-12' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (21 commits)
  irqchip: IMX_MU_MSI should depend on ARCH_MXC
  irqchip/imx-mu-msi: Fix wrong register offset for 8ulp
  irqchip/ls-extirq: Fix invalid wait context by avoiding to use regmap
  dt-bindings: irqchip: Describe the IMX MU block as a MSI controller
  irqchip: Add IMX MU MSI controller driver
  dt-bindings: irqchip: renesas,irqc: Add r8a779g0 support
  irqchip/gic-v3: Fix typo in comment
  dt-bindings: interrupt-controller: ti,sci-intr: Fix missing reg property in the binding
  dt-bindings: irqchip: ti,sci-inta: Fix warning for missing #interrupt-cells
  irqchip: Allow extra fields to be passed to IRQCHIP_PLATFORM_DRIVER_END
  platform-msi: Export symbol platform_msi_create_irq_domain()
  irqchip/realtek-rtl: use parent interrupts
  dt-bindings: interrupt-controller: realtek,rtl-intc: require parents
  irqchip/realtek-rtl: use irq_domain_add_linear()
  irqchip: Make irqchip_init() usable on pure ACPI systems
  bcma: gpio: Use generic_handle_irq_safe()
  gpio: mlxbf2: Use generic_handle_irq_safe()
  platform/x86: intel_int0002_vgpio: Use generic_handle_irq_safe()
  ssb: gpio: Use generic_handle_irq_safe()
  pinctrl: amd: Use generic_handle_irq_safe()
  ...
2022-10-12 10:23:24 -07:00
..
Kconfig
Makefile
README
TODO
bcma_private.h
core.c
driver_chipcommon.c
driver_chipcommon_b.c
driver_chipcommon_nflash.c
driver_chipcommon_pflash.c
driver_chipcommon_pmu.c
driver_chipcommon_sflash.c
driver_gmac_cmn.c
driver_gpio.c bcma: gpio: Use generic_handle_irq_safe() 2022-09-19 15:08:39 +02:00
driver_mips.c
driver_pci.c
driver_pci_host.c
driver_pcie2.c
host_pci.c
host_soc.c
main.c
scan.c
scan.h
sprom.c

README

Broadcom introduced new bus as replacement for older SSB. It is based on AMBA,
however from programming point of view there is nothing AMBA specific we use.

Standard AMBA drivers are platform specific, have hardcoded addresses and use
AMBA standard fields like CID and PID.

In case of Broadcom's cards every device consists of:
1) Broadcom specific AMBA device. It is put on AMBA bus, but can not be treated
   as standard AMBA device. Reading it's CID or PID can cause machine lockup.
2) AMBA standard devices called ports or wrappers. They have CIDs (AMBA_CID)
   and PIDs (0x103BB369), but we do not use that info for anything. One of that
   devices is used for managing Broadcom specific core.

Addresses of AMBA devices are not hardcoded in driver and have to be read from
EPROM.

In this situation we decided to introduce separated bus. It can contain up to
16 devices identified by Broadcom specific fields: manufacturer, id, revision
and class.