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authorLinus Torvalds <torvalds@linux-foundation.org>2026-08-19 10:09:22 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2026-08-19 10:09:22 -0700
commitf4cdf7ca9a1fdcca413157df19753f388a5a224e (patch)
tree60a31895b2446cd7fa27514e8c2843534a0de0da /drivers/misc/ibmasm/lowlevel.c
downloadlinux-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.c75
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;
+}