[PATCH v5] event: Add fpga load event

[Michal Simek]

On 7/20/23 09:27, christian.taedcke-oss at weidmueller.com wrote:
> From: Christian Taedcke <christian.taedcke at weidmueller.com>
> 
> This enables implementing custom logic after a bitstream was loaded
> into the fpga.
> 
> Signed-off-by: Christian Taedcke <christian.taedcke at weidmueller.com>
> Reviewed-by: Simon Glass <sjg at chromium.org>
> ---
> 
> Changes in v5:
> - remove changes from kmcent2 board file
> - add missing include to event.h
> 
> Changes in v4:
> - add include common.h to kmcent2 board file
> 
> Changes in v3:
> - replace #if with if
> - remove previously added printf
> - return notification error from fpga_load()
> - fix static_assert checking event name list
> 
> Changes in v2:
> - replace __weak function with a new event
> 
>   common/event.c      |  3 +++
>   drivers/fpga/fpga.c | 20 ++++++++++++++++++++
>   include/event.h     | 17 +++++++++++++++++
>   3 files changed, 40 insertions(+)
> 
> diff --git a/common/event.c b/common/event.c
> index 164c95f8f5..20720c5283 100644
> --- a/common/event.c
> +++ b/common/event.c
> @@ -36,6 +36,9 @@ const char *const type_name[] = {
>   	/* init hooks */
>   	"misc_init_f",
>   
> +	/* Fpga load hook */
> +	"fpga_load",
> +
>   	/* fdt hooks */
>   	"ft_fixup",
>   
> diff --git a/drivers/fpga/fpga.c b/drivers/fpga/fpga.c
> index 7f6b6bc73a..81e6d8ffc0 100644
> --- a/drivers/fpga/fpga.c
> +++ b/drivers/fpga/fpga.c
> @@ -244,6 +244,21 @@ int fpga_loads(int devnum, const void *buf, size_t size,
>   }
>   #endif
>   
> +static int fpga_load_event_notify(const void *buf, size_t bsize, int result)
> +{
> +	if (CONFIG_IS_ENABLED(EVENT)) {
> +		struct event_fpga_load load = {
> +			.buf = buf,
> +			.bsize = bsize,
> +			.result = result
> +		};
> +
> +		return event_notify(EVT_FPGA_LOAD, &load, sizeof(load));
> +	}
> +
> +	return 0;
> +}
> +
>   /*
>    * Generic multiplexing code
>    */
> @@ -251,6 +266,7 @@ int fpga_load(int devnum, const void *buf, size_t bsize, bitstream_type bstype,
>   	      int flags)
>   {
>   	int ret_val = FPGA_FAIL;           /* assume failure */
> +	int ret_notify;
>   	const fpga_desc *desc = fpga_validate(devnum, buf, bsize,
>   					      (char *)__func__);
>   
> @@ -284,6 +300,10 @@ int fpga_load(int devnum, const void *buf, size_t bsize, bitstream_type bstype,
>   		}
>   	}
>   
> +	ret_notify = fpga_load_event_notify(buf, bsize, ret_val);
> +	if (ret_notify)
> +		return ret_notify;
> +
>   	return ret_val;
>   }
>   
> diff --git a/include/event.h b/include/event.h
> index fe41080fa6..daf44bf8a8 100644
> --- a/include/event.h
> +++ b/include/event.h
> @@ -11,6 +11,7 @@
>   #define __event_h
>   
>   #include <dm/ofnode_decl.h>
> +#include <linux/types.h>
>   
>   /**
>    * enum event_t - Types of events supported by U-Boot
> @@ -31,6 +32,9 @@ enum event_t {
>   	/* Init hooks */
>   	EVT_MISC_INIT_F,
>   
> +	/* Fpga load hook */
> +	EVT_FPGA_LOAD,
> +
>   	/* Device tree fixups before booting */
>   	EVT_FT_FIXUP,
>   
> @@ -59,6 +63,19 @@ union event_data {
>   		struct udevice *dev;
>   	} dm;
>   
> +	/**
> +	 * struct event_fpga_load - fpga load event
> +	 *
> +	 * @buf: The buffer that was loaded into the fpga
> +	 * @bsize: The size of the buffer that was loaded into the fpga
> +	 * @result: Result of the load operation
> +	 */
> +	struct event_fpga_load {
> +		const void *buf;
> +		size_t bsize;
> +		int result;
> +	} fpga_load;
> +
>   	/**
>   	 * struct event_ft_fixup - FDT fixup before booting
>   	 *

I forget to reply that I applied this patch.
Already merged to main repo as a1190b4d6a9bf3a45038e3eba4a11de4be2b1cca.

Thanks,
Michal