From mboxrd@z Thu Jan 1 00:00:00 1970 From: chee.hong.ang at intel.com Date: Fri, 20 Apr 2018 11:26:44 +0800 Subject: [U-Boot] [PATCH v1 1/3] arm: socfpga: stratix10: Add Stratix10 FPGA Reconfiguration Driver In-Reply-To: <1524194806-4821-1-git-send-email-chee.hong.ang@intel.com> References: <1524194806-4821-1-git-send-email-chee.hong.ang@intel.com> Message-ID: <1524194806-4821-2-git-send-email-chee.hong.ang@intel.com> List-Id: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: u-boot@lists.denx.de From: Chee Hong Ang Enable FPGA reconfiguration support on Stratix10 SoC. Signed-off-by: Chee Hong Ang --- drivers/fpga/Kconfig | 10 ++ drivers/fpga/Makefile | 1 + drivers/fpga/stratix10.c | 298 +++++++++++++++++++++++++++++++++++++++++++++++ 3 files changed, 309 insertions(+) create mode 100644 drivers/fpga/stratix10.c diff --git a/drivers/fpga/Kconfig b/drivers/fpga/Kconfig index d36c4c5..255683d 100644 --- a/drivers/fpga/Kconfig +++ b/drivers/fpga/Kconfig @@ -31,6 +31,16 @@ config FPGA_CYCLON2 Enable FPGA driver for loading bitstream in BIT and BIN format on Altera Cyclone II device. +config FPGA_STRATIX10 + bool "Enable Altera FPGA driver for Stratix 10" + depends on FPGA_ALTERA && TARGET_SOCFPGA_STRATIX10 + help + Say Y here to enable the Altera Stratix 10 FPGA specific driver + + This provides common functionality for Altera Stratix 10 devices. + Enable FPGA driver for writing bitstream into Altera Stratix10 + device. + config FPGA_XILINX bool "Enable Xilinx FPGA drivers" select FPGA diff --git a/drivers/fpga/Makefile b/drivers/fpga/Makefile index 08c9ff8..3c906ec 100644 --- a/drivers/fpga/Makefile +++ b/drivers/fpga/Makefile @@ -19,6 +19,7 @@ obj-$(CONFIG_FPGA_ACEX1K) += ACEX1K.o obj-$(CONFIG_FPGA_CYCLON2) += cyclon2.o obj-$(CONFIG_FPGA_STRATIX_II) += stratixII.o obj-$(CONFIG_FPGA_STRATIX_V) += stratixv.o +obj-$(CONFIG_FPGA_STRATIX10) += stratix10.o obj-$(CONFIG_FPGA_SOCFPGA) += socfpga.o obj-$(CONFIG_TARGET_SOCFPGA_GEN5) += socfpga_gen5.o obj-$(CONFIG_TARGET_SOCFPGA_ARRIA10) += socfpga_arria10.o diff --git a/drivers/fpga/stratix10.c b/drivers/fpga/stratix10.c new file mode 100644 index 0000000..f0c5ace --- /dev/null +++ b/drivers/fpga/stratix10.c @@ -0,0 +1,298 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Copyright (C) 2016-2018 Intel Corporation + * + */ + +#include +#include +#include + +#define RECONFIG_STATUS_POLL_RESP_TIMEOUT_MS 60000 +#define RECONFIG_STATUS_INTERVAL_DELAY_US 1000000 + +static const struct mbox_cfgstat_state { + int err_no; + const char *error_name; +} mbox_cfgstat_state[] = { + {MBOX_CFGSTAT_STATE_IDLE, "FPGA in idle mode."}, + {MBOX_CFGSTAT_STATE_CONFIG, "FPGA in config mode."}, + {MBOX_CFGSTAT_STATE_FAILACK, "Acknowledgement failed!"}, + {MBOX_CFGSTAT_STATE_ERROR_INVALID, "Invalid bitstream!"}, + {MBOX_CFGSTAT_STATE_ERROR_CORRUPT, "Corrupted bitstream!"}, + {MBOX_CFGSTAT_STATE_ERROR_AUTH, "Authentication failed!"}, + {MBOX_CFGSTAT_STATE_ERROR_CORE_IO, "I/O error!"}, + {MBOX_CFGSTAT_STATE_ERROR_HARDWARE, "Hardware error!"}, + {MBOX_CFGSTAT_STATE_ERROR_FAKE, "Fake error!"}, + {MBOX_CFGSTAT_STATE_ERROR_BOOT_INFO, "Error in boot info!"}, + {MBOX_CFGSTAT_STATE_ERROR_QSPI_ERROR, "Error in QSPI!"}, + {-ETIMEDOUT, "I/O timeout error"}, + {-1, "Unknown error!"} +}; + +#define MBOX_CFGSTAT_MAX \ + (sizeof(mbox_cfgstat_state) / sizeof(struct mbox_cfgstat_state)) + +static const char *mbox_cfgstat_to_str(int err) +{ + int i; + + for (i = 0; i < MBOX_CFGSTAT_MAX - 1; i++) { + if (mbox_cfgstat_state[i].err_no == err) + return mbox_cfgstat_state[i].error_name; + } + + return mbox_cfgstat_state[MBOX_CFGSTAT_MAX - 1].error_name; +} + +static void inc_cmd_id(u8 *id) +{ + u8 val = *id + 1; + + if (val > 15) + val = 1; + + *id = val; +} + +/* + * Polling the FPGA configuration status. + * Return 0 for success, non-zero for error. + */ +static int reconfig_status_polling_resp(void) +{ + u32 reconfig_status_resp_len; + u32 reconfig_status_resp[RECONFIG_STATUS_RESPONSE_LEN]; + int ret; + unsigned long start = get_timer(0); + + while (1) { + reconfig_status_resp_len = RECONFIG_STATUS_RESPONSE_LEN; + ret = mbox_send_cmd(MBOX_ID_UBOOT, MBOX_RECONFIG_STATUS, + MBOX_CMD_DIRECT, 0, NULL, 0, + &reconfig_status_resp_len, + reconfig_status_resp); + + if (ret) { + puts("Failure in RECONFIG_STATUS mailbox command!\n"); + return ret; + } + + /* Check for any error */ + ret = reconfig_status_resp[RECONFIG_STATUS_STATE]; + if (ret && ret != MBOX_CFGSTAT_STATE_CONFIG) + return ret; + + /* Make sure nStatus is not 0 */ + ret = reconfig_status_resp[RECONFIG_STATUS_PIN_STATUS]; + if (!(ret & RCF_PIN_STATUS_NSTATUS)) + return MBOX_CFGSTAT_STATE_ERROR_HARDWARE; + + ret = reconfig_status_resp[RECONFIG_STATUS_SOFTFUNC_STATUS]; + if (ret & RCF_SOFTFUNC_STATUS_SEU_ERROR) + return MBOX_CFGSTAT_STATE_ERROR_HARDWARE; + + if ((ret & RCF_SOFTFUNC_STATUS_CONF_DONE) && + (ret & RCF_SOFTFUNC_STATUS_INIT_DONE) && + !reconfig_status_resp[RECONFIG_STATUS_STATE]) + return 0; /* configuration success */ + + if (get_timer(start) > RECONFIG_STATUS_POLL_RESP_TIMEOUT_MS) + break; /* time out */ + + puts("."); + udelay(RECONFIG_STATUS_INTERVAL_DELAY_US); + } + + return -ETIMEDOUT; +} + +static u32 get_resp_hdr(u32 *r_index, u32 *w_index, u32 *resp_count, + u32 *resp_buf, u32 buf_size, u32 client_id) +{ + u32 i; + u32 mbox_hdr; + u32 resp_len; + u32 hdr_len; + u32 buf[MBOX_RESP_BUFFER_SIZE]; + + if (*resp_count < buf_size) { + u32 rcv_len_max = buf_size - *resp_count; + + if (rcv_len_max > MBOX_RESP_BUFFER_SIZE) + rcv_len_max = MBOX_RESP_BUFFER_SIZE; + resp_len = mbox_rcv_resp(buf, rcv_len_max); + + for (i = 0; i < resp_len; i++) { + resp_buf[(*w_index)++] = buf[i]; + *w_index %= buf_size; + (*resp_count)++; + } + } + + /* No response in buffer */ + if (*resp_count == 0) + return 0; + + mbox_hdr = resp_buf[*r_index]; + + hdr_len = MBOX_RESP_LEN_GET(mbox_hdr); + + /* Insufficient header length to return a mailbox header */ + if ((*resp_count - 1) < hdr_len) + return 0; + + *r_index += (hdr_len + 1); + *r_index %= buf_size; + *resp_count -= (hdr_len + 1); + + /* Make sure response belongs to us */ + if (MBOX_RESP_CLIENT_GET(mbox_hdr) != client_id) + return 0; + + return mbox_hdr; +} + +static int send_reconfig_data(const void *rbf_data, size_t rbf_size, + u32 xfer_max, u32 buf_size_max) +{ + u32 resp_rindex = 0; + u32 resp_windex = 0; + u32 resp_count = 0; + u32 response_buffer[MBOX_RESP_BUFFER_SIZE]; + u8 resp_err = 0; + u8 cmd_id = 1; + u32 xfer_count = 0; + u32 xfer_pending[MBOX_RESP_BUFFER_SIZE]; + u32 args[3]; + int ret = 0; + u32 i; + + debug("SDM xfer_max = %d\n", xfer_max); + debug("SDM buf_size_max = %x\n\n", buf_size_max); + + for (i = 0; i < MBOX_RESP_BUFFER_SIZE; i++) + xfer_pending[i] = 0; + + while (rbf_size || xfer_count) { + if (!resp_err && rbf_size && xfer_count < xfer_max) { + args[0] = (1 << 8); + args[1] = (u32)rbf_data; + if (rbf_size >= buf_size_max) { + args[2] = buf_size_max; + rbf_size -= buf_size_max; + rbf_data += buf_size_max; + } else { + args[2] = (u32)rbf_size; + rbf_size = 0; + } + + debug("Sending MBOX_RECONFIG_DATA...\n"); + + ret = mbox_send_cmd_only(cmd_id, MBOX_RECONFIG_DATA, + MBOX_CMD_INDIRECT, 3, args); + if (ret) { + resp_err = 1; + } else { + xfer_count++; + for (i = 0; i < MBOX_RESP_BUFFER_SIZE; i++) { + if (!xfer_pending[i]) { + xfer_pending[i] = cmd_id; + inc_cmd_id(&cmd_id); + break; + } + } + debug("+xfer_count = %d\n", xfer_count); + debug("xfer ID = %d\n", xfer_pending[i]); + debug("data offset = %08x\n", args[1]); + debug("data size = %08x\n", args[2]); + } +#ifndef DEBUG + puts("."); +#endif + } else { + u32 r_id = 0; + u32 resp_hdr = get_resp_hdr(&resp_rindex, &resp_windex, + &resp_count, + response_buffer, + MBOX_RESP_BUFFER_SIZE, + MBOX_CLIENT_ID_UBOOT); + + /* If no valid response header found */ + if (!resp_hdr) + continue; + + /* Expect 0 length from RECONFIG_DATA */ + if (MBOX_RESP_LEN_GET(resp_hdr)) + continue; + + /* Check for response's status */ + if (!resp_err) { + ret = MBOX_RESP_ERR_GET(resp_hdr); + debug("Response error code: %08x\n", ret); + /* Error in response */ + if (ret) + resp_err = 1; + } + + /* Read the response header's ID */ + r_id = MBOX_RESP_ID_GET(resp_hdr); + for (i = 0; i < MBOX_RESP_BUFFER_SIZE; i++) { + if (r_id == xfer_pending[i]) { + /* Reclaim ID */ + cmd_id = (u32)xfer_pending[i]; + xfer_pending[i] = 0; + xfer_count--; + break; + } + } + + debug("Reclaimed xfer ID = %d\n", cmd_id); + debug("-xfer_count = %d\n", xfer_count); + if (resp_err && !xfer_count) + return ret; + } + } + + return 0; +} + +/* + * This is the interface used by FPGA driver. + * Return 0 for success, non-zero for error. + */ +int stratix10_load(Altera_desc *desc, const void *rbf_data, size_t rbf_size) +{ + int ret; + u32 resp_len = 2; + u32 resp_buf[2]; + + debug("Sending MBOX_RECONFIG...\n"); + ret = mbox_send_cmd(MBOX_ID_UBOOT, MBOX_RECONFIG, MBOX_CMD_DIRECT, 0, + NULL, 0, &resp_len, resp_buf); + if (ret) { + puts("Failure in RECONFIG mailbox command!\n"); + return ret; + } + + ret = send_reconfig_data(rbf_data, rbf_size, resp_buf[0], resp_buf[1]); + if (ret) { + printf("RECONFIG_DATA error: %08x, %s\n", ret, + mbox_cfgstat_to_str(ret)); + return ret; + } + + /* Make sure we don't send MBOX_RECONFIG_STATUS too fast */ + udelay(RECONFIG_STATUS_INTERVAL_DELAY_US); + + debug("\nPolling with MBOX_RECONFIG_STATUS...\n"); + ret = reconfig_status_polling_resp(); + if (ret) { + printf("Error: %s\n", mbox_cfgstat_to_str(ret)); + return ret; + } + + puts("\nFPGA reconfiguration OK!\n"); + + return ret; +} -- 2.2.0