Merge tag 'char-misc-6.9-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc

Pull char/misc and other driver subsystem updates from Greg KH:
 "Here is the big set of char/misc and a number of other driver
  subsystem updates for 6.9-rc1. Included in here are:

   - IIO driver updates, loads of new ones and evolution of existing ones

   - coresight driver updates

   - const cleanups for many driver subsystems

   - speakup driver additions

   - platform remove callback void cleanups

   - mei driver updates

   - mhi driver updates

   - cdx driver updates for MSI interrupt handling

   - nvmem driver updates

   - other smaller driver updates and cleanups, full details in the
    shortlog

  All of these have been in linux-next for a long time with no reported
  issue, other than a build warning for the speakup driver"

The build warning hits clang and is a gcc (and C23) extension, and is
fixed up in the merge.

Link: https://lore.kernel.org/all/20240321134831.GA2762840@dev-arch.thelio-3990X/

* tag 'char-misc-6.9-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc: (279 commits)
  binder: remove redundant variable page_addr
  uio_dmem_genirq: UIO_MEM_DMA_COHERENT conversion
  uio_pruss: UIO_MEM_DMA_COHERENT conversion
  cnic,bnx2,bnx2x: use UIO_MEM_DMA_COHERENT
  uio: introduce UIO_MEM_DMA_COHERENT type
  cdx: add MSI support for CDX bus
  pps: use cflags-y instead of EXTRA_CFLAGS
  speakup: Add /dev/synthu device
  speakup: Fix 8bit characters from direct synth
  parport: sunbpp: Convert to platform remove callback returning void
  parport: amiga: Convert to platform remove callback returning void
  char: xillybus: Convert to platform remove callback returning void
  vmw_balloon: change maintainership
  MAINTAINERS: change the maintainer for hpilo driver
  char: xilinx_hwicap: Fix NULL vs IS_ERR() bug
  hpet: remove hpets::hp_clocksource
  platform: goldfish: move the separate 'default' propery for CONFIG_GOLDFISH
  char: xilinx_hwicap: drop casting to void in dev_set_drvdata
  greybus: move is_gb_* functions out of greybus.h
  greybus: Remove usage of the deprecated ida_simple_xx() API
  ...

1 files changed, 31 insertions, 2 deletions

diff --git a/drivers/cdx/controller/mcdi_functions.c b/drivers/cdx/controller/mcdi_functions.c
index b1f530946389..885c69e6ebe5 100644
--- a/drivers/cdx/controller/mcdi_functions.c
+++ b/drivers/cdx/controller/mcdi_functions.c
@@ -49,7 +49,7 @@ int cdx_mcdi_get_dev_config(struct cdx_mcdi *cdx,
 			    u8 bus_num, u8 dev_num,
 			    struct cdx_dev_params *dev_params)
 {
-	MCDI_DECLARE_BUF(outbuf, MC_CMD_CDX_BUS_GET_DEVICE_CONFIG_OUT_LEN);
+	MCDI_DECLARE_BUF(outbuf, MC_CMD_CDX_BUS_GET_DEVICE_CONFIG_OUT_V2_LEN);
 	MCDI_DECLARE_BUF(inbuf, MC_CMD_CDX_BUS_GET_DEVICE_CONFIG_IN_LEN);
 	struct resource *res = &dev_params->res[0];
 	size_t outlen;
@@ -64,7 +64,7 @@ int cdx_mcdi_get_dev_config(struct cdx_mcdi *cdx,
 	if (ret)
 		return ret;
 
-	if (outlen != MC_CMD_CDX_BUS_GET_DEVICE_CONFIG_OUT_LEN)
+	if (outlen != MC_CMD_CDX_BUS_GET_DEVICE_CONFIG_OUT_V2_LEN)
 		return -EIO;
 
 	dev_params->bus_num = bus_num;
@@ -73,6 +73,9 @@ int cdx_mcdi_get_dev_config(struct cdx_mcdi *cdx,
 	req_id = MCDI_DWORD(outbuf, CDX_BUS_GET_DEVICE_CONFIG_OUT_REQUESTER_ID);
 	dev_params->req_id = req_id;
 
+	dev_params->msi_dev_id = MCDI_DWORD(outbuf,
+					    CDX_BUS_GET_DEVICE_CONFIG_OUT_V2_REQUESTER_DEVICE_ID);
+
 	dev_params->res_count = 0;
 	if (MCDI_QWORD(outbuf, CDX_BUS_GET_DEVICE_CONFIG_OUT_MMIO_REGION0_SIZE) != 0) {
 		res[dev_params->res_count].start =
@@ -127,6 +130,7 @@ int cdx_mcdi_get_dev_config(struct cdx_mcdi *cdx,
 	dev_params->class = MCDI_DWORD(outbuf,
 				       CDX_BUS_GET_DEVICE_CONFIG_OUT_DEVICE_CLASS) & 0xFFFFFF;
 	dev_params->revision = MCDI_BYTE(outbuf, CDX_BUS_GET_DEVICE_CONFIG_OUT_DEVICE_REVISION);
+	dev_params->num_msi = MCDI_DWORD(outbuf, CDX_BUS_GET_DEVICE_CONFIG_OUT_MSI_COUNT);
 
 	return 0;
 }
@@ -155,6 +159,24 @@ int cdx_mcdi_bus_disable(struct cdx_mcdi *cdx, u8 bus_num)
 	return ret;
 }
 
+int cdx_mcdi_write_msi(struct cdx_mcdi *cdx, u8 bus_num, u8 dev_num,
+		       u32 msi_vector, u64 msi_address, u32 msi_data)
+{
+	MCDI_DECLARE_BUF(inbuf, MC_CMD_CDX_DEVICE_WRITE_MSI_MSG_IN_LEN);
+	int ret;
+
+	MCDI_SET_DWORD(inbuf, CDX_DEVICE_WRITE_MSI_MSG_IN_BUS, bus_num);
+	MCDI_SET_DWORD(inbuf, CDX_DEVICE_WRITE_MSI_MSG_IN_DEVICE, dev_num);
+	MCDI_SET_DWORD(inbuf, CDX_DEVICE_WRITE_MSI_MSG_IN_MSI_VECTOR, msi_vector);
+	MCDI_SET_QWORD(inbuf, CDX_DEVICE_WRITE_MSI_MSG_IN_MSI_ADDRESS, msi_address);
+	MCDI_SET_DWORD(inbuf, CDX_DEVICE_WRITE_MSI_MSG_IN_MSI_DATA, msi_data);
+
+	ret = cdx_mcdi_rpc(cdx, MC_CMD_CDX_DEVICE_WRITE_MSI_MSG, inbuf, sizeof(inbuf),
+			   NULL, 0, NULL);
+
+	return ret;
+}
+
 int cdx_mcdi_reset_device(struct cdx_mcdi *cdx, u8 bus_num, u8 dev_num)
 {
 	MCDI_DECLARE_BUF(inbuf, MC_CMD_CDX_DEVICE_RESET_IN_LEN);
@@ -226,3 +248,10 @@ int cdx_mcdi_bus_master_enable(struct cdx_mcdi *cdx, u8 bus_num,
 	return cdx_mcdi_ctrl_flag_set(cdx, bus_num, dev_num, enable,
 			MC_CMD_CDX_DEVICE_CONTROL_SET_IN_BUS_MASTER_ENABLE_LBN);
 }
+
+int cdx_mcdi_msi_enable(struct cdx_mcdi *cdx, u8 bus_num,
+			u8 dev_num, bool enable)
+{
+	return cdx_mcdi_ctrl_flag_set(cdx, bus_num, dev_num, enable,
+			MC_CMD_CDX_DEVICE_CONTROL_SET_IN_MSI_ENABLE_LBN);
+}