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firmware: xilinx: Add fpga API's 

This Patch Adds fpga API's to support the Bitstream loading
by using firmware interface.

Signed-off-by: Nava kishore Manne <nava.manne@xilinx.com>
Reviewed-by: Moritz Fischer <mdf@kernel.org>
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
hifive-unleashed-5.2
Nava kishore Manne 2019-04-15 12:47:46 +05:30 committed by Michal Simek
parent 3d03137864
commit e840decc19
2 changed files with 57 additions and 0 deletions
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45
drivers/firmware/xilinx/zynqmp.c
View File

@ -539,6 +539,49 @@ static int zynqmp_pm_reset_get_status(const enum zynqmp_pm_reset reset,
return ret;
}
/**
* zynqmp_pm_fpga_load - Perform the fpga load
* @address: Address to write to
* @size: pl bitstream size
* @flags: Bitstream type
* -XILINX_ZYNQMP_PM_FPGA_FULL: FPGA full reconfiguration
* -XILINX_ZYNQMP_PM_FPGA_PARTIAL: FPGA partial reconfiguration
*
* This function provides access to pmufw. To transfer
* the required bitstream into PL.
*
* Return: Returns status, either success or error+reason
*/
static int zynqmp_pm_fpga_load(const u64 address, const u32 size,
const u32 flags)
{
return zynqmp_pm_invoke_fn(PM_FPGA_LOAD, lower_32_bits(address),
upper_32_bits(address), size, flags, NULL);
}
/**
* zynqmp_pm_fpga_get_status - Read value from PCAP status register
* @value: Value to read
*
* This function provides access to the pmufw to get the PCAP
* status
*
* Return: Returns status, either success or error+reason
*/
static int zynqmp_pm_fpga_get_status(u32 *value)
{
u32 ret_payload[PAYLOAD_ARG_CNT];
int ret;
if (!value)
return -EINVAL;
ret = zynqmp_pm_invoke_fn(PM_FPGA_GET_STATUS, 0, 0, 0, 0, ret_payload);
*value = ret_payload[1];
return ret;
}
/**
* zynqmp_pm_init_finalize() - PM call to inform firmware that the caller
* master has initialized its own power management
@ -642,6 +685,8 @@ static const struct zynqmp_eemi_ops eemi_ops = {
.request_node = zynqmp_pm_request_node,
.release_node = zynqmp_pm_release_node,
.set_requirement = zynqmp_pm_set_requirement,
.fpga_load = zynqmp_pm_fpga_load,
.fpga_get_status = zynqmp_pm_fpga_get_status,
};
/**

12
include/linux/firmware/xlnx-zynqmp.h
View File

@ -48,6 +48,14 @@
#define ZYNQMP_PM_CAPABILITY_WAKEUP 0x4U
#define ZYNQMP_PM_CAPABILITY_POWER 0x8U
/*
* Firmware FPGA Manager flags
* XILINX_ZYNQMP_PM_FPGA_FULL: FPGA full reconfiguration
* XILINX_ZYNQMP_PM_FPGA_PARTIAL: FPGA partial reconfiguration
*/
#define XILINX_ZYNQMP_PM_FPGA_FULL 0x0U
#define XILINX_ZYNQMP_PM_FPGA_PARTIAL BIT(0)
enum pm_api_id {
PM_GET_API_VERSION = 1,
PM_REQUEST_NODE = 13,
@ -56,6 +64,8 @@ enum pm_api_id {
PM_RESET_ASSERT = 17,
PM_RESET_GET_STATUS,
PM_PM_INIT_FINALIZE = 21,
PM_FPGA_LOAD,
PM_FPGA_GET_STATUS,
PM_GET_CHIPID = 24,
PM_IOCTL = 34,
PM_QUERY_DATA,
@ -258,6 +268,8 @@ struct zynqmp_pm_query_data {
struct zynqmp_eemi_ops {
int (*get_api_version)(u32 *version);
int (*get_chipid)(u32 *idcode, u32 *version);
int (*fpga_load)(const u64 address, const u32 size, const u32 flags);
int (*fpga_get_status)(u32 *value);
int (*query_data)(struct zynqmp_pm_query_data qdata, u32 *out);
int (*clock_enable)(u32 clock_id);
int (*clock_disable)(u32 clock_id);