From 603aed8ffd4c9cb633c05a514cfb5e8ca6b0751d Mon Sep 17 00:00:00 2001 From: Ilpo Järvinen Date: Mon, 16 Jan 2023 12:08:38 +0200 Subject: mfd: intel-m10-bmc: Split into core and spi specific parts MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Split the common code from intel-m10-bmc driver into intel-m10-bmc-core and move the SPI bus parts into an interface specific file. intel-m10-bmc-core becomes the core MFD functions which can support multiple bus interface like SPI bus. Co-developed-by: Tianfei zhang Signed-off-by: Tianfei zhang Reviewed-by: Russ Weight Acked-by: Guenter Roeck # hwmon Reviewed-by: Xu Yilun Signed-off-by: Ilpo Järvinen Signed-off-by: Lee Jones Link: https://lore.kernel.org/r/20230116100845.6153-5-ilpo.jarvinen@linux.intel.com --- drivers/fpga/Kconfig | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers/fpga') diff --git a/drivers/fpga/Kconfig b/drivers/fpga/Kconfig index 6ce143dafd04..0a00763b9f28 100644 --- a/drivers/fpga/Kconfig +++ b/drivers/fpga/Kconfig @@ -246,7 +246,7 @@ config FPGA_MGR_VERSAL_FPGA config FPGA_M10_BMC_SEC_UPDATE tristate "Intel MAX10 BMC Secure Update driver" - depends on MFD_INTEL_M10_BMC + depends on MFD_INTEL_M10_BMC_CORE select FW_LOADER select FW_UPLOAD help -- cgit v1.2.3 From 6052a005caf9cd484fe6368a31c736ac17ebaf66 Mon Sep 17 00:00:00 2001 From: Ilpo Järvinen Date: Mon, 16 Jan 2023 12:08:39 +0200 Subject: mfd: intel-m10-bmc: Support multiple CSR register layouts MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit There are different addresses for the MAX10 CSR registers. Introducing a new data structure m10bmc_csr_map for the register definition of MAX10 CSR. Provide the csr_map for SPI. Co-developed-by: Tianfei zhang Signed-off-by: Tianfei zhang Reviewed-by: Russ Weight Reviewed-by: Xu Yilun Signed-off-by: Ilpo Järvinen Signed-off-by: Lee Jones Link: https://lore.kernel.org/r/20230116100845.6153-6-ilpo.jarvinen@linux.intel.com --- drivers/fpga/intel-m10-bmc-sec-update.c | 73 ++++++++++++++++++++++----------- drivers/mfd/intel-m10-bmc-core.c | 10 ++--- drivers/mfd/intel-m10-bmc-spi.c | 23 +++++++++++ include/linux/mfd/intel-m10-bmc.h | 38 +++++++++++++++-- 4 files changed, 111 insertions(+), 33 deletions(-) (limited to 'drivers/fpga') diff --git a/drivers/fpga/intel-m10-bmc-sec-update.c b/drivers/fpga/intel-m10-bmc-sec-update.c index 79d48852825e..dbe8aff95da3 100644 --- a/drivers/fpga/intel-m10-bmc-sec-update.c +++ b/drivers/fpga/intel-m10-bmc-sec-update.c @@ -73,16 +73,24 @@ show_root_entry_hash(struct device *dev, u32 exp_magic, return cnt; } -#define DEVICE_ATTR_SEC_REH_RO(_name, _magic, _prog_addr, _reh_addr) \ +#define DEVICE_ATTR_SEC_REH_RO(_name) \ static ssize_t _name##_root_entry_hash_show(struct device *dev, \ struct device_attribute *attr, \ char *buf) \ -{ return show_root_entry_hash(dev, _magic, _prog_addr, _reh_addr, buf); } \ +{ \ + struct m10bmc_sec *sec = dev_get_drvdata(dev); \ + const struct m10bmc_csr_map *csr_map = sec->m10bmc->info->csr_map; \ + \ + return show_root_entry_hash(dev, csr_map->_name##_magic, \ + csr_map->_name##_prog_addr, \ + csr_map->_name##_reh_addr, \ + buf); \ +} \ static DEVICE_ATTR_RO(_name##_root_entry_hash) -DEVICE_ATTR_SEC_REH_RO(bmc, BMC_PROG_MAGIC, BMC_PROG_ADDR, BMC_REH_ADDR); -DEVICE_ATTR_SEC_REH_RO(sr, SR_PROG_MAGIC, SR_PROG_ADDR, SR_REH_ADDR); -DEVICE_ATTR_SEC_REH_RO(pr, PR_PROG_MAGIC, PR_PROG_ADDR, PR_REH_ADDR); +DEVICE_ATTR_SEC_REH_RO(bmc); +DEVICE_ATTR_SEC_REH_RO(sr); +DEVICE_ATTR_SEC_REH_RO(pr); #define CSK_BIT_LEN 128U #define CSK_32ARRAY_SIZE DIV_ROUND_UP(CSK_BIT_LEN, 32) @@ -122,18 +130,25 @@ show_canceled_csk(struct device *dev, u32 addr, char *buf) return bitmap_print_to_pagebuf(1, buf, csk_map, CSK_BIT_LEN); } -#define DEVICE_ATTR_SEC_CSK_RO(_name, _addr) \ +#define DEVICE_ATTR_SEC_CSK_RO(_name) \ static ssize_t _name##_canceled_csks_show(struct device *dev, \ struct device_attribute *attr, \ char *buf) \ -{ return show_canceled_csk(dev, _addr, buf); } \ +{ \ + struct m10bmc_sec *sec = dev_get_drvdata(dev); \ + const struct m10bmc_csr_map *csr_map = sec->m10bmc->info->csr_map; \ + \ + return show_canceled_csk(dev, \ + csr_map->_name##_prog_addr + CSK_VEC_OFFSET, \ + buf); \ +} \ static DEVICE_ATTR_RO(_name##_canceled_csks) #define CSK_VEC_OFFSET 0x34 -DEVICE_ATTR_SEC_CSK_RO(bmc, BMC_PROG_ADDR + CSK_VEC_OFFSET); -DEVICE_ATTR_SEC_CSK_RO(sr, SR_PROG_ADDR + CSK_VEC_OFFSET); -DEVICE_ATTR_SEC_CSK_RO(pr, PR_PROG_ADDR + CSK_VEC_OFFSET); +DEVICE_ATTR_SEC_CSK_RO(bmc); +DEVICE_ATTR_SEC_CSK_RO(sr); +DEVICE_ATTR_SEC_CSK_RO(pr); #define FLASH_COUNT_SIZE 4096 /* count stored as inverted bit vector */ @@ -141,6 +156,7 @@ static ssize_t flash_count_show(struct device *dev, struct device_attribute *attr, char *buf) { struct m10bmc_sec *sec = dev_get_drvdata(dev); + const struct m10bmc_csr_map *csr_map = sec->m10bmc->info->csr_map; unsigned int stride, num_bits; u8 *flash_buf; int cnt, ret; @@ -160,12 +176,12 @@ static ssize_t flash_count_show(struct device *dev, if (!flash_buf) return -ENOMEM; - ret = regmap_bulk_read(sec->m10bmc->regmap, STAGING_FLASH_COUNT, + ret = regmap_bulk_read(sec->m10bmc->regmap, csr_map->rsu_update_counter, flash_buf, FLASH_COUNT_SIZE / stride); if (ret) { dev_err(sec->dev, "failed to read flash count: %x cnt %x: %d\n", - STAGING_FLASH_COUNT, FLASH_COUNT_SIZE / stride, ret); + csr_map->rsu_update_counter, FLASH_COUNT_SIZE / stride, ret); goto exit_free; } cnt = num_bits - bitmap_weight((unsigned long *)flash_buf, num_bits); @@ -200,20 +216,22 @@ static const struct attribute_group *m10bmc_sec_attr_groups[] = { static void log_error_regs(struct m10bmc_sec *sec, u32 doorbell) { + const struct m10bmc_csr_map *csr_map = sec->m10bmc->info->csr_map; u32 auth_result; dev_err(sec->dev, "RSU error status: 0x%08x\n", doorbell); - if (!m10bmc_sys_read(sec->m10bmc, M10BMC_AUTH_RESULT, &auth_result)) + if (!m10bmc_sys_read(sec->m10bmc, csr_map->auth_result, &auth_result)) dev_err(sec->dev, "RSU auth result: 0x%08x\n", auth_result); } static enum fw_upload_err rsu_check_idle(struct m10bmc_sec *sec) { + const struct m10bmc_csr_map *csr_map = sec->m10bmc->info->csr_map; u32 doorbell; int ret; - ret = m10bmc_sys_read(sec->m10bmc, M10BMC_DOORBELL, &doorbell); + ret = m10bmc_sys_read(sec->m10bmc, csr_map->doorbell, &doorbell); if (ret) return FW_UPLOAD_ERR_RW_ERROR; @@ -246,11 +264,12 @@ static inline bool rsu_start_done(u32 doorbell) static enum fw_upload_err rsu_update_init(struct m10bmc_sec *sec) { + const struct m10bmc_csr_map *csr_map = sec->m10bmc->info->csr_map; u32 doorbell, status; int ret; ret = regmap_update_bits(sec->m10bmc->regmap, - M10BMC_SYS_BASE + M10BMC_DOORBELL, + csr_map->base + csr_map->doorbell, DRBL_RSU_REQUEST | DRBL_HOST_STATUS, DRBL_RSU_REQUEST | FIELD_PREP(DRBL_HOST_STATUS, @@ -259,7 +278,7 @@ static enum fw_upload_err rsu_update_init(struct m10bmc_sec *sec) return FW_UPLOAD_ERR_RW_ERROR; ret = regmap_read_poll_timeout(sec->m10bmc->regmap, - M10BMC_SYS_BASE + M10BMC_DOORBELL, + csr_map->base + csr_map->doorbell, doorbell, rsu_start_done(doorbell), NIOS_HANDSHAKE_INTERVAL_US, @@ -286,11 +305,12 @@ static enum fw_upload_err rsu_update_init(struct m10bmc_sec *sec) static enum fw_upload_err rsu_prog_ready(struct m10bmc_sec *sec) { + const struct m10bmc_csr_map *csr_map = sec->m10bmc->info->csr_map; unsigned long poll_timeout; u32 doorbell, progress; int ret; - ret = m10bmc_sys_read(sec->m10bmc, M10BMC_DOORBELL, &doorbell); + ret = m10bmc_sys_read(sec->m10bmc, csr_map->doorbell, &doorbell); if (ret) return FW_UPLOAD_ERR_RW_ERROR; @@ -300,7 +320,7 @@ static enum fw_upload_err rsu_prog_ready(struct m10bmc_sec *sec) if (time_after(jiffies, poll_timeout)) break; - ret = m10bmc_sys_read(sec->m10bmc, M10BMC_DOORBELL, &doorbell); + ret = m10bmc_sys_read(sec->m10bmc, csr_map->doorbell, &doorbell); if (ret) return FW_UPLOAD_ERR_RW_ERROR; } @@ -319,11 +339,12 @@ static enum fw_upload_err rsu_prog_ready(struct m10bmc_sec *sec) static enum fw_upload_err rsu_send_data(struct m10bmc_sec *sec) { + const struct m10bmc_csr_map *csr_map = sec->m10bmc->info->csr_map; u32 doorbell; int ret; ret = regmap_update_bits(sec->m10bmc->regmap, - M10BMC_SYS_BASE + M10BMC_DOORBELL, + csr_map->base + csr_map->doorbell, DRBL_HOST_STATUS, FIELD_PREP(DRBL_HOST_STATUS, HOST_STATUS_WRITE_DONE)); @@ -331,7 +352,7 @@ static enum fw_upload_err rsu_send_data(struct m10bmc_sec *sec) return FW_UPLOAD_ERR_RW_ERROR; ret = regmap_read_poll_timeout(sec->m10bmc->regmap, - M10BMC_SYS_BASE + M10BMC_DOORBELL, + csr_map->base + csr_map->doorbell, doorbell, rsu_prog(doorbell) != RSU_PROG_READY, NIOS_HANDSHAKE_INTERVAL_US, @@ -360,7 +381,9 @@ static enum fw_upload_err rsu_send_data(struct m10bmc_sec *sec) static int rsu_check_complete(struct m10bmc_sec *sec, u32 *doorbell) { - if (m10bmc_sys_read(sec->m10bmc, M10BMC_DOORBELL, doorbell)) + const struct m10bmc_csr_map *csr_map = sec->m10bmc->info->csr_map; + + if (m10bmc_sys_read(sec->m10bmc, csr_map->doorbell, doorbell)) return -EIO; switch (rsu_stat(*doorbell)) { @@ -389,10 +412,11 @@ static int rsu_check_complete(struct m10bmc_sec *sec, u32 *doorbell) static enum fw_upload_err rsu_cancel(struct m10bmc_sec *sec) { + const struct m10bmc_csr_map *csr_map = sec->m10bmc->info->csr_map; u32 doorbell; int ret; - ret = m10bmc_sys_read(sec->m10bmc, M10BMC_DOORBELL, &doorbell); + ret = m10bmc_sys_read(sec->m10bmc, csr_map->doorbell, &doorbell); if (ret) return FW_UPLOAD_ERR_RW_ERROR; @@ -400,7 +424,7 @@ static enum fw_upload_err rsu_cancel(struct m10bmc_sec *sec) return FW_UPLOAD_ERR_BUSY; ret = regmap_update_bits(sec->m10bmc->regmap, - M10BMC_SYS_BASE + M10BMC_DOORBELL, + csr_map->base + csr_map->doorbell, DRBL_HOST_STATUS, FIELD_PREP(DRBL_HOST_STATUS, HOST_STATUS_ABORT_RSU)); @@ -445,6 +469,7 @@ static enum fw_upload_err m10bmc_sec_write(struct fw_upload *fwl, const u8 *data u32 offset, u32 size, u32 *written) { struct m10bmc_sec *sec = fwl->dd_handle; + const struct m10bmc_csr_map *csr_map = sec->m10bmc->info->csr_map; u32 blk_size, doorbell, extra_offset; unsigned int stride, extra = 0; int ret; @@ -453,7 +478,7 @@ static enum fw_upload_err m10bmc_sec_write(struct fw_upload *fwl, const u8 *data if (sec->cancel_request) return rsu_cancel(sec); - ret = m10bmc_sys_read(sec->m10bmc, M10BMC_DOORBELL, &doorbell); + ret = m10bmc_sys_read(sec->m10bmc, csr_map->doorbell, &doorbell); if (ret) { return FW_UPLOAD_ERR_RW_ERROR; } else if (rsu_prog(doorbell) != RSU_PROG_READY) { diff --git a/drivers/mfd/intel-m10-bmc-core.c b/drivers/mfd/intel-m10-bmc-core.c index dd26e3a6c3ab..cbea8d4f68fa 100644 --- a/drivers/mfd/intel-m10-bmc-core.c +++ b/drivers/mfd/intel-m10-bmc-core.c @@ -19,7 +19,7 @@ static ssize_t bmc_version_show(struct device *dev, unsigned int val; int ret; - ret = m10bmc_sys_read(ddata, M10BMC_BUILD_VER, &val); + ret = m10bmc_sys_read(ddata, ddata->info->csr_map->build_version, &val); if (ret) return ret; @@ -34,7 +34,7 @@ static ssize_t bmcfw_version_show(struct device *dev, unsigned int val; int ret; - ret = m10bmc_sys_read(ddata, NIOS2_FW_VERSION, &val); + ret = m10bmc_sys_read(ddata, ddata->info->csr_map->fw_version, &val); if (ret) return ret; @@ -49,11 +49,11 @@ static ssize_t mac_address_show(struct device *dev, unsigned int macaddr_low, macaddr_high; int ret; - ret = m10bmc_sys_read(ddata, M10BMC_MAC_LOW, &macaddr_low); + ret = m10bmc_sys_read(ddata, ddata->info->csr_map->mac_low, &macaddr_low); if (ret) return ret; - ret = m10bmc_sys_read(ddata, M10BMC_MAC_HIGH, &macaddr_high); + ret = m10bmc_sys_read(ddata, ddata->info->csr_map->mac_high, &macaddr_high); if (ret) return ret; @@ -74,7 +74,7 @@ static ssize_t mac_count_show(struct device *dev, unsigned int macaddr_high; int ret; - ret = m10bmc_sys_read(ddata, M10BMC_MAC_HIGH, &macaddr_high); + ret = m10bmc_sys_read(ddata, ddata->info->csr_map->mac_high, &macaddr_high); if (ret) return ret; diff --git a/drivers/mfd/intel-m10-bmc-spi.c b/drivers/mfd/intel-m10-bmc-spi.c index be1d4ddedabb..3ed7a71a3267 100644 --- a/drivers/mfd/intel-m10-bmc-spi.c +++ b/drivers/mfd/intel-m10-bmc-spi.c @@ -91,6 +91,26 @@ static int intel_m10_bmc_spi_probe(struct spi_device *spi) return m10bmc_dev_init(ddata, info); } +static const struct m10bmc_csr_map m10bmc_n3000_csr_map = { + .base = M10BMC_SYS_BASE, + .build_version = M10BMC_BUILD_VER, + .fw_version = NIOS2_FW_VERSION, + .mac_low = M10BMC_MAC_LOW, + .mac_high = M10BMC_MAC_HIGH, + .doorbell = M10BMC_DOORBELL, + .auth_result = M10BMC_AUTH_RESULT, + .bmc_prog_addr = BMC_PROG_ADDR, + .bmc_reh_addr = BMC_REH_ADDR, + .bmc_magic = BMC_PROG_MAGIC, + .sr_prog_addr = SR_PROG_ADDR, + .sr_reh_addr = SR_REH_ADDR, + .sr_magic = SR_PROG_MAGIC, + .pr_prog_addr = PR_PROG_ADDR, + .pr_reh_addr = PR_REH_ADDR, + .pr_magic = PR_PROG_MAGIC, + .rsu_update_counter = STAGING_FLASH_COUNT, +}; + static struct mfd_cell m10bmc_d5005_subdevs[] = { { .name = "d5005bmc-hwmon" }, { .name = "d5005bmc-sec-update" }, @@ -109,16 +129,19 @@ static struct mfd_cell m10bmc_n5010_subdevs[] = { static const struct intel_m10bmc_platform_info m10bmc_spi_n3000 = { .cells = m10bmc_pacn3000_subdevs, .n_cells = ARRAY_SIZE(m10bmc_pacn3000_subdevs), + .csr_map = &m10bmc_n3000_csr_map, }; static const struct intel_m10bmc_platform_info m10bmc_spi_d5005 = { .cells = m10bmc_d5005_subdevs, .n_cells = ARRAY_SIZE(m10bmc_d5005_subdevs), + .csr_map = &m10bmc_n3000_csr_map, }; static const struct intel_m10bmc_platform_info m10bmc_spi_n5010 = { .cells = m10bmc_n5010_subdevs, .n_cells = ARRAY_SIZE(m10bmc_n5010_subdevs), + .csr_map = &m10bmc_n3000_csr_map, }; static const struct spi_device_id m10bmc_spi_id[] = { diff --git a/include/linux/mfd/intel-m10-bmc.h b/include/linux/mfd/intel-m10-bmc.h index a80deb61b69a..d569a72c7d4f 100644 --- a/include/linux/mfd/intel-m10-bmc.h +++ b/include/linux/mfd/intel-m10-bmc.h @@ -121,14 +121,39 @@ /* Address of 4KB inverted bit vector containing staging area FLASH count */ #define STAGING_FLASH_COUNT 0x17ffb000 +/** + * struct m10bmc_csr_map - Intel MAX 10 BMC CSR register map + */ +struct m10bmc_csr_map { + unsigned int base; + unsigned int build_version; + unsigned int fw_version; + unsigned int mac_low; + unsigned int mac_high; + unsigned int doorbell; + unsigned int auth_result; + unsigned int bmc_prog_addr; + unsigned int bmc_reh_addr; + unsigned int bmc_magic; + unsigned int sr_prog_addr; + unsigned int sr_reh_addr; + unsigned int sr_magic; + unsigned int pr_prog_addr; + unsigned int pr_reh_addr; + unsigned int pr_magic; + unsigned int rsu_update_counter; +}; + /** * struct intel_m10bmc_platform_info - Intel MAX 10 BMC platform specific information * @cells: MFD cells * @n_cells: MFD cells ARRAY_SIZE() + * @csr_map: the mappings for register definition of MAX10 BMC */ struct intel_m10bmc_platform_info { struct mfd_cell *cells; int n_cells; + const struct m10bmc_csr_map *csr_map; }; /** @@ -167,12 +192,17 @@ m10bmc_raw_read(struct intel_m10bmc *m10bmc, unsigned int addr, * The base of the system registers could be configured by HW developers, and * in HW SPEC, the base is not added to the addresses of the system registers. * - * This macro helps to simplify the accessing of the system registers. And if + * This function helps to simplify the accessing of the system registers. And if * the base is reconfigured in HW, SW developers could simply change the - * M10BMC_SYS_BASE accordingly. + * csr_map's base accordingly. */ -#define m10bmc_sys_read(m10bmc, offset, val) \ - m10bmc_raw_read(m10bmc, M10BMC_SYS_BASE + (offset), val) +static inline int m10bmc_sys_read(struct intel_m10bmc *m10bmc, unsigned int offset, + unsigned int *val) +{ + const struct m10bmc_csr_map *csr_map = m10bmc->info->csr_map; + + return m10bmc_raw_read(m10bmc, csr_map->base + offset, val); +} /* * MAX10 BMC Core support -- cgit v1.2.3 From 3e10c805b382d0a8906a4fed109958cac637f5e0 Mon Sep 17 00:00:00 2001 From: Ilpo Järvinen Date: Mon, 16 Jan 2023 12:08:40 +0200 Subject: fpga: intel-m10-bmc: Rework flash read/write MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Access to flash staging area is different for N6000 from that of the SPI interfaced counterparts. To make it easier to differentiate flash access path, move read/write into new functions where the new access path can be easily placed into. Rework the unaligned access such the behavior it matches for both read and write. This change also renames m10bmc_sec_write() to m10bmc_sec_fw_write() as it would have a name conflict otherwise. Co-developed-by: Tianfei zhang Signed-off-by: Tianfei zhang Co-developed-by: Russ Weight Signed-off-by: Russ Weight Acked-by: Xu Yilun Signed-off-by: Ilpo Järvinen Signed-off-by: Lee Jones Link: https://lore.kernel.org/r/20230116100845.6153-7-ilpo.jarvinen@linux.intel.com --- drivers/fpga/intel-m10-bmc-sec-update.c | 143 ++++++++++++++++++-------------- 1 file changed, 79 insertions(+), 64 deletions(-) (limited to 'drivers/fpga') diff --git a/drivers/fpga/intel-m10-bmc-sec-update.c b/drivers/fpga/intel-m10-bmc-sec-update.c index dbe8aff95da3..2df24e70012d 100644 --- a/drivers/fpga/intel-m10-bmc-sec-update.c +++ b/drivers/fpga/intel-m10-bmc-sec-update.c @@ -31,6 +31,65 @@ static DEFINE_XARRAY_ALLOC(fw_upload_xa); #define REH_MAGIC GENMASK(15, 0) #define REH_SHA_NUM_BYTES GENMASK(31, 16) +static int m10bmc_sec_write(struct m10bmc_sec *sec, const u8 *buf, u32 offset, u32 size) +{ + struct intel_m10bmc *m10bmc = sec->m10bmc; + unsigned int stride = regmap_get_reg_stride(m10bmc->regmap); + u32 write_count = size / stride; + u32 leftover_offset = write_count * stride; + u32 leftover_size = size - leftover_offset; + u32 leftover_tmp = 0; + int ret; + + if (WARN_ON_ONCE(stride > sizeof(leftover_tmp))) + return -EINVAL; + + ret = regmap_bulk_write(m10bmc->regmap, M10BMC_STAGING_BASE + offset, + buf + offset, write_count); + if (ret) + return ret; + + /* If size is not aligned to stride, handle the remainder bytes with regmap_write() */ + if (leftover_size) { + memcpy(&leftover_tmp, buf + leftover_offset, leftover_size); + ret = regmap_write(m10bmc->regmap, M10BMC_STAGING_BASE + offset + leftover_offset, + leftover_tmp); + if (ret) + return ret; + } + + return 0; +} + +static int m10bmc_sec_read(struct m10bmc_sec *sec, u8 *buf, u32 addr, u32 size) +{ + struct intel_m10bmc *m10bmc = sec->m10bmc; + unsigned int stride = regmap_get_reg_stride(m10bmc->regmap); + u32 read_count = size / stride; + u32 leftover_offset = read_count * stride; + u32 leftover_size = size - leftover_offset; + u32 leftover_tmp; + int ret; + + if (WARN_ON_ONCE(stride > sizeof(leftover_tmp))) + return -EINVAL; + + ret = regmap_bulk_read(m10bmc->regmap, addr, buf, read_count); + if (ret) + return ret; + + /* If size is not aligned to stride, handle the remainder bytes with regmap_read() */ + if (leftover_size) { + ret = regmap_read(m10bmc->regmap, addr + leftover_offset, &leftover_tmp); + if (ret) + return ret; + memcpy(buf + leftover_offset, &leftover_tmp, leftover_size); + } + + return 0; +} + + static ssize_t show_root_entry_hash(struct device *dev, u32 exp_magic, u32 prog_addr, u32 reh_addr, char *buf) @@ -38,11 +97,9 @@ show_root_entry_hash(struct device *dev, u32 exp_magic, struct m10bmc_sec *sec = dev_get_drvdata(dev); int sha_num_bytes, i, ret, cnt = 0; u8 hash[REH_SHA384_SIZE]; - unsigned int stride; u32 magic; - stride = regmap_get_reg_stride(sec->m10bmc->regmap); - ret = m10bmc_raw_read(sec->m10bmc, prog_addr, &magic); + ret = m10bmc_sec_read(sec, (u8 *)&magic, prog_addr, sizeof(magic)); if (ret) return ret; @@ -50,19 +107,16 @@ show_root_entry_hash(struct device *dev, u32 exp_magic, return sysfs_emit(buf, "hash not programmed\n"); sha_num_bytes = FIELD_GET(REH_SHA_NUM_BYTES, magic) / 8; - if ((sha_num_bytes % stride) || - (sha_num_bytes != REH_SHA256_SIZE && - sha_num_bytes != REH_SHA384_SIZE)) { + if (sha_num_bytes != REH_SHA256_SIZE && + sha_num_bytes != REH_SHA384_SIZE) { dev_err(sec->dev, "%s bad sha num bytes %d\n", __func__, sha_num_bytes); return -EINVAL; } - ret = regmap_bulk_read(sec->m10bmc->regmap, reh_addr, - hash, sha_num_bytes / stride); + ret = m10bmc_sec_read(sec, hash, reh_addr, sha_num_bytes); if (ret) { - dev_err(dev, "failed to read root entry hash: %x cnt %x: %d\n", - reh_addr, sha_num_bytes / stride, ret); + dev_err(dev, "failed to read root entry hash\n"); return ret; } @@ -98,27 +152,16 @@ DEVICE_ATTR_SEC_REH_RO(pr); static ssize_t show_canceled_csk(struct device *dev, u32 addr, char *buf) { - unsigned int i, stride, size = CSK_32ARRAY_SIZE * sizeof(u32); + unsigned int i, size = CSK_32ARRAY_SIZE * sizeof(u32); struct m10bmc_sec *sec = dev_get_drvdata(dev); DECLARE_BITMAP(csk_map, CSK_BIT_LEN); __le32 csk_le32[CSK_32ARRAY_SIZE]; u32 csk32[CSK_32ARRAY_SIZE]; int ret; - stride = regmap_get_reg_stride(sec->m10bmc->regmap); - if (size % stride) { - dev_err(sec->dev, - "CSK vector size (0x%x) not aligned to stride (0x%x)\n", - size, stride); - WARN_ON_ONCE(1); - return -EINVAL; - } - - ret = regmap_bulk_read(sec->m10bmc->regmap, addr, csk_le32, - size / stride); + ret = m10bmc_sec_read(sec, (u8 *)&csk_le32, addr, size); if (ret) { - dev_err(sec->dev, "failed to read CSK vector: %x cnt %x: %d\n", - addr, size / stride, ret); + dev_err(sec->dev, "failed to read CSK vector\n"); return ret; } @@ -157,31 +200,20 @@ static ssize_t flash_count_show(struct device *dev, { struct m10bmc_sec *sec = dev_get_drvdata(dev); const struct m10bmc_csr_map *csr_map = sec->m10bmc->info->csr_map; - unsigned int stride, num_bits; + unsigned int num_bits; u8 *flash_buf; int cnt, ret; - stride = regmap_get_reg_stride(sec->m10bmc->regmap); num_bits = FLASH_COUNT_SIZE * 8; - if (FLASH_COUNT_SIZE % stride) { - dev_err(sec->dev, - "FLASH_COUNT_SIZE (0x%x) not aligned to stride (0x%x)\n", - FLASH_COUNT_SIZE, stride); - WARN_ON_ONCE(1); - return -EINVAL; - } - flash_buf = kmalloc(FLASH_COUNT_SIZE, GFP_KERNEL); if (!flash_buf) return -ENOMEM; - ret = regmap_bulk_read(sec->m10bmc->regmap, csr_map->rsu_update_counter, - flash_buf, FLASH_COUNT_SIZE / stride); + ret = m10bmc_sec_read(sec, flash_buf, csr_map->rsu_update_counter, + FLASH_COUNT_SIZE); if (ret) { - dev_err(sec->dev, - "failed to read flash count: %x cnt %x: %d\n", - csr_map->rsu_update_counter, FLASH_COUNT_SIZE / stride, ret); + dev_err(sec->dev, "failed to read flash count\n"); goto exit_free; } cnt = num_bits - bitmap_weight((unsigned long *)flash_buf, num_bits); @@ -465,20 +497,19 @@ static enum fw_upload_err m10bmc_sec_prepare(struct fw_upload *fwl, #define WRITE_BLOCK_SIZE 0x4000 /* Default write-block size is 0x4000 bytes */ -static enum fw_upload_err m10bmc_sec_write(struct fw_upload *fwl, const u8 *data, - u32 offset, u32 size, u32 *written) +static enum fw_upload_err m10bmc_sec_fw_write(struct fw_upload *fwl, const u8 *data, + u32 offset, u32 size, u32 *written) { struct m10bmc_sec *sec = fwl->dd_handle; const struct m10bmc_csr_map *csr_map = sec->m10bmc->info->csr_map; - u32 blk_size, doorbell, extra_offset; - unsigned int stride, extra = 0; + struct intel_m10bmc *m10bmc = sec->m10bmc; + u32 blk_size, doorbell; int ret; - stride = regmap_get_reg_stride(sec->m10bmc->regmap); if (sec->cancel_request) return rsu_cancel(sec); - ret = m10bmc_sys_read(sec->m10bmc, csr_map->doorbell, &doorbell); + ret = m10bmc_sys_read(m10bmc, csr_map->doorbell, &doorbell); if (ret) { return FW_UPLOAD_ERR_RW_ERROR; } else if (rsu_prog(doorbell) != RSU_PROG_READY) { @@ -486,28 +517,12 @@ static enum fw_upload_err m10bmc_sec_write(struct fw_upload *fwl, const u8 *data return FW_UPLOAD_ERR_HW_ERROR; } - WARN_ON_ONCE(WRITE_BLOCK_SIZE % stride); + WARN_ON_ONCE(WRITE_BLOCK_SIZE % regmap_get_reg_stride(m10bmc->regmap)); blk_size = min_t(u32, WRITE_BLOCK_SIZE, size); - ret = regmap_bulk_write(sec->m10bmc->regmap, - M10BMC_STAGING_BASE + offset, - (void *)data + offset, - blk_size / stride); + ret = m10bmc_sec_write(sec, data, offset, blk_size); if (ret) return FW_UPLOAD_ERR_RW_ERROR; - /* - * If blk_size is not aligned to stride, then handle the extra - * bytes with regmap_write. - */ - if (blk_size % stride) { - extra_offset = offset + ALIGN_DOWN(blk_size, stride); - memcpy(&extra, (u8 *)(data + extra_offset), blk_size % stride); - ret = regmap_write(sec->m10bmc->regmap, - M10BMC_STAGING_BASE + extra_offset, extra); - if (ret) - return FW_UPLOAD_ERR_RW_ERROR; - } - *written = blk_size; return FW_UPLOAD_ERR_NONE; } @@ -568,7 +583,7 @@ static void m10bmc_sec_cleanup(struct fw_upload *fwl) static const struct fw_upload_ops m10bmc_ops = { .prepare = m10bmc_sec_prepare, - .write = m10bmc_sec_write, + .write = m10bmc_sec_fw_write, .poll_complete = m10bmc_sec_poll_complete, .cancel = m10bmc_sec_cancel, .cleanup = m10bmc_sec_cleanup, -- cgit v1.2.3 From da04fa8c40c339da7bb6de463ef83bc141d1111e Mon Sep 17 00:00:00 2001 From: Ilpo Järvinen Date: Mon, 16 Jan 2023 12:08:42 +0200 Subject: fpga: m10bmc-sec: Create helpers for rsu status/progress checks MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit RSU_STAT_* and RSU_PROG_* checks are done in more than one place in the sec update code. Move the checks into new helper functions. No function changes intended. Co-developed-by: Tianfei zhang Signed-off-by: Tianfei zhang Co-developed-by: Russ Weight Signed-off-by: Russ Weight Acked-by: Xu Yilun Signed-off-by: Ilpo Järvinen Signed-off-by: Lee Jones Link: https://lore.kernel.org/r/20230116100845.6153-9-ilpo.jarvinen@linux.intel.com --- drivers/fpga/intel-m10-bmc-sec-update.c | 59 +++++++++++++++++---------------- 1 file changed, 31 insertions(+), 28 deletions(-) (limited to 'drivers/fpga') diff --git a/drivers/fpga/intel-m10-bmc-sec-update.c b/drivers/fpga/intel-m10-bmc-sec-update.c index 2df24e70012d..43d9598d6077 100644 --- a/drivers/fpga/intel-m10-bmc-sec-update.c +++ b/drivers/fpga/intel-m10-bmc-sec-update.c @@ -257,6 +257,28 @@ static void log_error_regs(struct m10bmc_sec *sec, u32 doorbell) dev_err(sec->dev, "RSU auth result: 0x%08x\n", auth_result); } +static bool rsu_status_ok(u32 status) +{ + return (status == RSU_STAT_NORMAL || + status == RSU_STAT_NIOS_OK || + status == RSU_STAT_USER_OK || + status == RSU_STAT_FACTORY_OK); +} + +static bool rsu_progress_done(u32 progress) +{ + return (progress == RSU_PROG_IDLE || + progress == RSU_PROG_RSU_DONE); +} + +static bool rsu_progress_busy(u32 progress) +{ + return (progress == RSU_PROG_AUTHENTICATING || + progress == RSU_PROG_COPYING || + progress == RSU_PROG_UPDATE_CANCEL || + progress == RSU_PROG_PROGRAM_KEY_HASH); +} + static enum fw_upload_err rsu_check_idle(struct m10bmc_sec *sec) { const struct m10bmc_csr_map *csr_map = sec->m10bmc->info->csr_map; @@ -267,8 +289,7 @@ static enum fw_upload_err rsu_check_idle(struct m10bmc_sec *sec) if (ret) return FW_UPLOAD_ERR_RW_ERROR; - if (rsu_prog(doorbell) != RSU_PROG_IDLE && - rsu_prog(doorbell) != RSU_PROG_RSU_DONE) { + if (!rsu_progress_done(rsu_prog(doorbell))) { log_error_regs(sec, doorbell); return FW_UPLOAD_ERR_BUSY; } @@ -288,7 +309,7 @@ static inline bool rsu_start_done(u32 doorbell) return true; progress = rsu_prog(doorbell); - if (progress != RSU_PROG_IDLE && progress != RSU_PROG_RSU_DONE) + if (!rsu_progress_done(progress)) return true; return false; @@ -397,13 +418,7 @@ static enum fw_upload_err rsu_send_data(struct m10bmc_sec *sec) return FW_UPLOAD_ERR_RW_ERROR; } - switch (rsu_stat(doorbell)) { - case RSU_STAT_NORMAL: - case RSU_STAT_NIOS_OK: - case RSU_STAT_USER_OK: - case RSU_STAT_FACTORY_OK: - break; - default: + if (!rsu_status_ok(rsu_stat(doorbell))) { log_error_regs(sec, doorbell); return FW_UPLOAD_ERR_HW_ERROR; } @@ -418,28 +433,16 @@ static int rsu_check_complete(struct m10bmc_sec *sec, u32 *doorbell) if (m10bmc_sys_read(sec->m10bmc, csr_map->doorbell, doorbell)) return -EIO; - switch (rsu_stat(*doorbell)) { - case RSU_STAT_NORMAL: - case RSU_STAT_NIOS_OK: - case RSU_STAT_USER_OK: - case RSU_STAT_FACTORY_OK: - break; - default: + if (!rsu_status_ok(rsu_stat(*doorbell))) return -EINVAL; - } - switch (rsu_prog(*doorbell)) { - case RSU_PROG_IDLE: - case RSU_PROG_RSU_DONE: + if (rsu_progress_done(rsu_prog(*doorbell))) return 0; - case RSU_PROG_AUTHENTICATING: - case RSU_PROG_COPYING: - case RSU_PROG_UPDATE_CANCEL: - case RSU_PROG_PROGRAM_KEY_HASH: + + if (rsu_progress_busy(rsu_prog(*doorbell))) return -EAGAIN; - default: - return -EINVAL; - } + + return -EINVAL; } static enum fw_upload_err rsu_cancel(struct m10bmc_sec *sec) -- cgit v1.2.3 From 001a734a55d09aa1716eb2cd5ccab8b4d7a068a2 Mon Sep 17 00:00:00 2001 From: Ilpo Järvinen Date: Mon, 16 Jan 2023 12:08:43 +0200 Subject: fpga: m10bmc-sec: Make rsu status type specific MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit The rsu status field moves from the doorbell register to the auth result register in the PMCI implementation of the MAX10 BMC. In order to prepare for that, refactor the sec update driver code to have a type specific ops that provides ->rsu_status(). Co-developed-by: Tianfei zhang Signed-off-by: Tianfei zhang Co-developed-by: Russ Weight Signed-off-by: Russ Weight Signed-off-by: Ilpo Järvinen Acked-by: Xu Yilun Signed-off-by: Lee Jones Link: https://lore.kernel.org/r/20230116100845.6153-10-ilpo.jarvinen@linux.intel.com --- drivers/fpga/intel-m10-bmc-sec-update.c | 109 +++++++++++++++++++++++--------- include/linux/mfd/intel-m10-bmc.h | 1 - 2 files changed, 78 insertions(+), 32 deletions(-) (limited to 'drivers/fpga') diff --git a/drivers/fpga/intel-m10-bmc-sec-update.c b/drivers/fpga/intel-m10-bmc-sec-update.c index 43d9598d6077..92145ee7333e 100644 --- a/drivers/fpga/intel-m10-bmc-sec-update.c +++ b/drivers/fpga/intel-m10-bmc-sec-update.c @@ -14,6 +14,12 @@ #include #include +struct m10bmc_sec; + +struct m10bmc_sec_ops { + int (*rsu_status)(struct m10bmc_sec *sec); +}; + struct m10bmc_sec { struct device *dev; struct intel_m10bmc *m10bmc; @@ -21,6 +27,7 @@ struct m10bmc_sec { char *fw_name; u32 fw_name_id; bool cancel_request; + const struct m10bmc_sec_ops *ops; }; static DEFINE_XARRAY_ALLOC(fw_upload_xa); @@ -251,12 +258,25 @@ static void log_error_regs(struct m10bmc_sec *sec, u32 doorbell) const struct m10bmc_csr_map *csr_map = sec->m10bmc->info->csr_map; u32 auth_result; - dev_err(sec->dev, "RSU error status: 0x%08x\n", doorbell); + dev_err(sec->dev, "Doorbell: 0x%08x\n", doorbell); if (!m10bmc_sys_read(sec->m10bmc, csr_map->auth_result, &auth_result)) dev_err(sec->dev, "RSU auth result: 0x%08x\n", auth_result); } +static int m10bmc_sec_n3000_rsu_status(struct m10bmc_sec *sec) +{ + const struct m10bmc_csr_map *csr_map = sec->m10bmc->info->csr_map; + u32 doorbell; + int ret; + + ret = m10bmc_sys_read(sec->m10bmc, csr_map->doorbell, &doorbell); + if (ret) + return ret; + + return FIELD_GET(DRBL_RSU_STATUS, doorbell); +} + static bool rsu_status_ok(u32 status) { return (status == RSU_STAT_NORMAL || @@ -279,6 +299,26 @@ static bool rsu_progress_busy(u32 progress) progress == RSU_PROG_PROGRAM_KEY_HASH); } +static int m10bmc_sec_progress_status(struct m10bmc_sec *sec, u32 *doorbell_reg, + u32 *progress, u32 *status) +{ + const struct m10bmc_csr_map *csr_map = sec->m10bmc->info->csr_map; + int ret; + + ret = m10bmc_sys_read(sec->m10bmc, csr_map->doorbell, doorbell_reg); + if (ret) + return ret; + + ret = sec->ops->rsu_status(sec); + if (ret < 0) + return ret; + + *status = ret; + *progress = rsu_prog(*doorbell_reg); + + return 0; +} + static enum fw_upload_err rsu_check_idle(struct m10bmc_sec *sec) { const struct m10bmc_csr_map *csr_map = sec->m10bmc->info->csr_map; @@ -297,18 +337,14 @@ static enum fw_upload_err rsu_check_idle(struct m10bmc_sec *sec) return FW_UPLOAD_ERR_NONE; } -static inline bool rsu_start_done(u32 doorbell) +static inline bool rsu_start_done(u32 doorbell_reg, u32 progress, u32 status) { - u32 status, progress; - - if (doorbell & DRBL_RSU_REQUEST) + if (doorbell_reg & DRBL_RSU_REQUEST) return false; - status = rsu_stat(doorbell); if (status == RSU_STAT_ERASE_FAIL || status == RSU_STAT_WEAROUT) return true; - progress = rsu_prog(doorbell); if (!rsu_progress_done(progress)) return true; @@ -318,8 +354,8 @@ static inline bool rsu_start_done(u32 doorbell) static enum fw_upload_err rsu_update_init(struct m10bmc_sec *sec) { const struct m10bmc_csr_map *csr_map = sec->m10bmc->info->csr_map; - u32 doorbell, status; - int ret; + u32 doorbell_reg, progress, status; + int ret, err; ret = regmap_update_bits(sec->m10bmc->regmap, csr_map->base + csr_map->doorbell, @@ -330,26 +366,25 @@ static enum fw_upload_err rsu_update_init(struct m10bmc_sec *sec) if (ret) return FW_UPLOAD_ERR_RW_ERROR; - ret = regmap_read_poll_timeout(sec->m10bmc->regmap, - csr_map->base + csr_map->doorbell, - doorbell, - rsu_start_done(doorbell), - NIOS_HANDSHAKE_INTERVAL_US, - NIOS_HANDSHAKE_TIMEOUT_US); + ret = read_poll_timeout(m10bmc_sec_progress_status, err, + err < 0 || rsu_start_done(doorbell_reg, progress, status), + NIOS_HANDSHAKE_INTERVAL_US, + NIOS_HANDSHAKE_TIMEOUT_US, + false, + sec, &doorbell_reg, &progress, &status); if (ret == -ETIMEDOUT) { - log_error_regs(sec, doorbell); + log_error_regs(sec, doorbell_reg); return FW_UPLOAD_ERR_TIMEOUT; - } else if (ret) { + } else if (err) { return FW_UPLOAD_ERR_RW_ERROR; } - status = rsu_stat(doorbell); if (status == RSU_STAT_WEAROUT) { dev_warn(sec->dev, "Excessive flash update count detected\n"); return FW_UPLOAD_ERR_WEAROUT; } else if (status == RSU_STAT_ERASE_FAIL) { - log_error_regs(sec, doorbell); + log_error_regs(sec, doorbell_reg); return FW_UPLOAD_ERR_HW_ERROR; } @@ -393,7 +428,7 @@ static enum fw_upload_err rsu_prog_ready(struct m10bmc_sec *sec) static enum fw_upload_err rsu_send_data(struct m10bmc_sec *sec) { const struct m10bmc_csr_map *csr_map = sec->m10bmc->info->csr_map; - u32 doorbell; + u32 doorbell_reg, status; int ret; ret = regmap_update_bits(sec->m10bmc->regmap, @@ -406,40 +441,45 @@ static enum fw_upload_err rsu_send_data(struct m10bmc_sec *sec) ret = regmap_read_poll_timeout(sec->m10bmc->regmap, csr_map->base + csr_map->doorbell, - doorbell, - rsu_prog(doorbell) != RSU_PROG_READY, + doorbell_reg, + rsu_prog(doorbell_reg) != RSU_PROG_READY, NIOS_HANDSHAKE_INTERVAL_US, NIOS_HANDSHAKE_TIMEOUT_US); if (ret == -ETIMEDOUT) { - log_error_regs(sec, doorbell); + log_error_regs(sec, doorbell_reg); return FW_UPLOAD_ERR_TIMEOUT; } else if (ret) { return FW_UPLOAD_ERR_RW_ERROR; } - if (!rsu_status_ok(rsu_stat(doorbell))) { - log_error_regs(sec, doorbell); + ret = sec->ops->rsu_status(sec); + if (ret < 0) + return ret; + status = ret; + + if (!rsu_status_ok(status)) { + log_error_regs(sec, doorbell_reg); return FW_UPLOAD_ERR_HW_ERROR; } return FW_UPLOAD_ERR_NONE; } -static int rsu_check_complete(struct m10bmc_sec *sec, u32 *doorbell) +static int rsu_check_complete(struct m10bmc_sec *sec, u32 *doorbell_reg) { - const struct m10bmc_csr_map *csr_map = sec->m10bmc->info->csr_map; + u32 progress, status; - if (m10bmc_sys_read(sec->m10bmc, csr_map->doorbell, doorbell)) + if (m10bmc_sec_progress_status(sec, doorbell_reg, &progress, &status)) return -EIO; - if (!rsu_status_ok(rsu_stat(*doorbell))) + if (!rsu_status_ok(status)) return -EINVAL; - if (rsu_progress_done(rsu_prog(*doorbell))) + if (rsu_progress_done(progress)) return 0; - if (rsu_progress_busy(rsu_prog(*doorbell))) + if (rsu_progress_busy(progress)) return -EAGAIN; return -EINVAL; @@ -592,6 +632,10 @@ static const struct fw_upload_ops m10bmc_ops = { .cleanup = m10bmc_sec_cleanup, }; +static const struct m10bmc_sec_ops m10sec_n3000_ops = { + .rsu_status = m10bmc_sec_n3000_rsu_status, +}; + #define SEC_UPDATE_LEN_MAX 32 static int m10bmc_sec_probe(struct platform_device *pdev) { @@ -607,6 +651,7 @@ static int m10bmc_sec_probe(struct platform_device *pdev) sec->dev = &pdev->dev; sec->m10bmc = dev_get_drvdata(pdev->dev.parent); + sec->ops = (struct m10bmc_sec_ops *)platform_get_device_id(pdev)->driver_data; dev_set_drvdata(&pdev->dev, sec); ret = xa_alloc(&fw_upload_xa, &sec->fw_name_id, sec, @@ -647,9 +692,11 @@ static int m10bmc_sec_remove(struct platform_device *pdev) static const struct platform_device_id intel_m10bmc_sec_ids[] = { { .name = "n3000bmc-sec-update", + .driver_data = (kernel_ulong_t)&m10sec_n3000_ops, }, { .name = "d5005bmc-sec-update", + .driver_data = (kernel_ulong_t)&m10sec_n3000_ops, }, { } }; diff --git a/include/linux/mfd/intel-m10-bmc.h b/include/linux/mfd/intel-m10-bmc.h index 470dc3773c01..1f75b33240ad 100644 --- a/include/linux/mfd/intel-m10-bmc.h +++ b/include/linux/mfd/intel-m10-bmc.h @@ -91,7 +91,6 @@ #define HOST_STATUS_ABORT_RSU 0x2 #define rsu_prog(doorbell) FIELD_GET(DRBL_RSU_PROGRESS, doorbell) -#define rsu_stat(doorbell) FIELD_GET(DRBL_RSU_STATUS, doorbell) /* interval 100ms and timeout 5s */ #define NIOS_HANDSHAKE_INTERVAL_US (100 * 1000) -- cgit v1.2.3