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SubjectRe: [PATCH v8 1/5] drivers: firmware: Add PDI load API support
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On 6/26/21 8:52 AM, Nava kishore Manne wrote:
> This patch adds load PDI API support to enable full/partial PDI loading
> from linux. Programmable Device Image (PDI) is combination of headers,
> images and bitstream files to be loaded.
>
> Signed-off-by: Nava kishore Manne <nava.manne@xilinx.com>
> Reviewed-by: Moritz Fischer <mdf@kernel.org>
> ---
> Changes for v2:
> -Updated API Doc and commit msg.
> No functional changes.
>
> Changes for v3:
> -None.
>
> Changes for v4:
> -Rebased the changes on linux-next.
> No functional changes
>
> Changes for v5:
> -None.
>
> Changes for v6:
> -None.
>
> Changes for v7:
> -None.
>
> Changes for v8:
> -None.
>
> drivers/firmware/xilinx/zynqmp.c | 17 +++++++++++++++++
> include/linux/firmware/xlnx-zynqmp.h | 10 ++++++++++
> 2 files changed, 27 insertions(+)
>
> diff --git a/drivers/firmware/xilinx/zynqmp.c b/drivers/firmware/xilinx/zynqmp.c
> index 15b138326ecc..2db571da9ad8 100644
> --- a/drivers/firmware/xilinx/zynqmp.c
> +++ b/drivers/firmware/xilinx/zynqmp.c
> @@ -1011,6 +1011,23 @@ int zynqmp_pm_set_requirement(const u32 node, const u32 capabilities,
> }
> EXPORT_SYMBOL_GPL(zynqmp_pm_set_requirement);
>
> +/**
> + * zynqmp_pm_load_pdi - Load and process PDI
> + * @src: Source device where PDI is located
> + * @address: PDI src address
> + *
> + * This function provides support to load PDI from linux
> + *
> + * Return: Returns status, either success or error+reason
> + */
> +int zynqmp_pm_load_pdi(const u32 src, const u64 address)
> +{
> + return zynqmp_pm_invoke_fn(PM_LOAD_PDI, src,
> + lower_32_bits(address),
> + upper_32_bits(address), 0, NULL);
> +}
> +EXPORT_SYMBOL_GPL(zynqmp_pm_load_pdi);
> +
> /**
> * zynqmp_pm_aes - Access AES hardware to encrypt/decrypt the data using
> * AES-GCM core.
> diff --git a/include/linux/firmware/xlnx-zynqmp.h b/include/linux/firmware/xlnx-zynqmp.h
> index 9d1a5c175065..56b426fe020c 100644
> --- a/include/linux/firmware/xlnx-zynqmp.h
> +++ b/include/linux/firmware/xlnx-zynqmp.h
> @@ -52,6 +52,10 @@
> #define ZYNQMP_PM_CAPABILITY_WAKEUP 0x4U
> #define ZYNQMP_PM_CAPABILITY_UNUSABLE 0x8U
>
> +/* Loader commands */
> +#define PM_LOAD_PDI 0x701
This should be defined in enum pm_api_id
> +#define PDI_SRC_DDR 0xF

This is only used by versal_fpga_ops_write(), consider moving the
#define to versal-fpga.c

Tom

> +
> /*
> * Firmware FPGA Manager flags
> * XILINX_ZYNQMP_PM_FPGA_FULL: FPGA full reconfiguration
> @@ -411,6 +415,7 @@ int zynqmp_pm_pinctrl_get_config(const u32 pin, const u32 param,
> u32 *value);
> int zynqmp_pm_pinctrl_set_config(const u32 pin, const u32 param,
> u32 value);
> +int zynqmp_pm_load_pdi(const u32 src, const u64 address);
> #else
> static inline int zynqmp_pm_get_api_version(u32 *version)
> {
> @@ -622,6 +627,11 @@ static inline int zynqmp_pm_pinctrl_set_config(const u32 pin, const u32 param,
> {
> return -ENODEV;
> }
> +
> +static inline int zynqmp_pm_load_pdi(const u32 src, const u64 address)
> +{
> + return -ENODEV;
> +}
> #endif
>
> #endif /* __FIRMWARE_ZYNQMP_H__ */

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