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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2026-08-19 10:09:22 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2026-08-19 10:09:22 -0700 |
| commit | f4cdf7ca9a1fdcca413157df19753f388a5a224e (patch) | |
| tree | 60a31895b2446cd7fa27514e8c2843534a0de0da /drivers/misc/ibmasm/lowlevel.c | |
| download | linux-stable-f4cdf7ca9a1fdcca413157df19753f388a5a224e.tar.gz linux-stable-f4cdf7ca9a1fdcca413157df19753f388a5a224e.zip | |
Merge tag 'media/v7.3-1' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-mediagrafted
Pull media updates from Mauro Carvalho Chehab:
- v4l2-core: added ISP statistics support and per-block validation
- v4l2-core: Allow unknown HDR10 white point and luminance
- New camera sensors: Sony IMX678 and IMX471m, Himax HM1092 IR sensor
- New codec: Milos: VPU v2.0 codec support
- isp driver: gained support for Dreamchip RPPX1 ISP framework
- vsp1 driver: gained support for RZ/T2H and RZ/N2H
- Novalake driver: gained CVS support for new NVL hardware
- dvb-core: fix feed leak on failed DMX_ADD_PID
- several driver fixes, cleanups and minor improvements
* tag 'media/v7.3-1' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media: (308 commits)
media: ipu-bridge: check all DMI entries when overriding sensor rotation
media: v4l2-async: avoid deleting unlinked ASC entry on link error
media: rzg2l-cru: Align bytesperline to hardware DMA stride requirement
media: intel/ipu6: fix async notifier cleanup leak on parse error
media: staging/ipu7: fix async notifier UAF on probe error path
media: amd: isp4: fix self-deadlock in isp4sd_pwron_and_init() error path
media: amd: isp4: release partial allocations in isp4if_alloc_fw_gpumem()
media: rcar-isp: Fix VSPX reference leaks
media: rcar-isp: Release ISPCORE resources
media: i2c: imx415: Release runtime PM reference on VBLANK error
media: i2c: imx415: Return test pattern write errors
media: renesas: vsp1: Declare index variables in for loop statement
media: renesas: vsp1: Make reset control optional to support platforms without a reset line
media: dt-bindings: media: renesas,vsp1: Document RZ/T2H and RZ/N2H SoCs
media: dt-bindings: media: renesas,fcp: Document RZ/T2H and RZ/N2H SoCs
media: nxp: imx8-isi: Add additional 32-bit RGB format support
media: nxp: imx8-isi: Add 16-bit raw Bayer format support
media: nxp: imx8-isi: Implement per-stream reference counting for multiplexed streams
media: nxp: imx8-isi: Use BIT_ULL() for 64-bit stream masks
media: nxp: imx8-isi: Correct color map between V4L2 and ISI
...
Diffstat (limited to 'drivers/misc/ibmasm/lowlevel.c')
| -rw-r--r-- | drivers/misc/ibmasm/lowlevel.c | 75 |
1 files changed, 75 insertions, 0 deletions
diff --git a/drivers/misc/ibmasm/lowlevel.c b/drivers/misc/ibmasm/lowlevel.c new file mode 100644 index 000000000..5313230f3 --- /dev/null +++ b/drivers/misc/ibmasm/lowlevel.c @@ -0,0 +1,75 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/* + * IBM ASM Service Processor Device Driver + * + * Copyright (C) IBM Corporation, 2004 + * + * Author: Max Asböck <amax@us.ibm.com> + */ + +#include "ibmasm.h" +#include "lowlevel.h" +#include "i2o.h" +#include "dot_command.h" +#include "remote.h" + +static struct i2o_header header = I2O_HEADER_TEMPLATE; + + +int ibmasm_send_i2o_message(struct service_processor *sp) +{ + u32 mfa; + size_t command_size; + struct i2o_message *message; + struct command *command = sp->current_command; + + command_size = get_dot_command_size(command->buffer); + if (command_size > command->buffer_size) + return 1; + if (command_size > I2O_COMMAND_SIZE) + command_size = I2O_COMMAND_SIZE; + + mfa = get_mfa_inbound(sp->base_address); + if (!mfa) + return 1; + + header.message_size = outgoing_message_size((unsigned int)command_size); + message = get_i2o_message(sp->base_address, mfa); + + memcpy_toio(&message->header, &header, sizeof(struct i2o_header)); + memcpy_toio(&message->data, command->buffer, command_size); + + set_mfa_inbound(sp->base_address, mfa); + + return 0; +} + +irqreturn_t ibmasm_interrupt_handler(int irq, void * dev_id) +{ + u32 mfa; + struct service_processor *sp = (struct service_processor *)dev_id; + void __iomem *base_address = sp->base_address; + char tsbuf[32]; + + if (!sp_interrupt_pending(base_address)) + return IRQ_NONE; + + dbg("respond to interrupt at %s\n", get_timestamp(tsbuf)); + + if (mouse_interrupt_pending(sp)) { + ibmasm_handle_mouse_interrupt(sp); + clear_mouse_interrupt(sp); + } + + mfa = get_mfa_outbound(base_address); + if (valid_mfa(mfa)) { + struct i2o_message *msg = get_i2o_message(base_address, mfa); + ibmasm_receive_message(sp, &msg->data, incoming_data_size(msg)); + } else + dbg("didn't get a valid MFA\n"); + + set_mfa_outbound(base_address, mfa); + dbg("finished interrupt at %s\n", get_timestamp(tsbuf)); + + return IRQ_HANDLED; +} |
