Author | Tokens | Token Proportion | Commits | Commit Proportion |
---|---|---|---|---|
Michael Walle | 1396 | 99.15% | 3 | 42.86% |
Hou Zhiqiang | 6 | 0.43% | 1 | 14.29% |
Tudor-Dan Ambarus | 5 | 0.36% | 2 | 28.57% |
Boris Brezillon | 1 | 0.07% | 1 | 14.29% |
Total | 1408 | 7 |
// SPDX-License-Identifier: GPL-2.0 #include <linux/mtd/spi-nor.h> #include <linux/spi/spi.h> #include <linux/spi/spi-mem.h> #include <linux/debugfs.h> #include "core.h" #define SPI_NOR_DEBUGFS_ROOT "spi-nor" #define SNOR_F_NAME(name) [ilog2(SNOR_F_##name)] = #name static const char *const snor_f_names[] = { SNOR_F_NAME(HAS_SR_TB), SNOR_F_NAME(NO_OP_CHIP_ERASE), SNOR_F_NAME(BROKEN_RESET), SNOR_F_NAME(4B_OPCODES), SNOR_F_NAME(HAS_4BAIT), SNOR_F_NAME(HAS_LOCK), SNOR_F_NAME(HAS_16BIT_SR), SNOR_F_NAME(NO_READ_CR), SNOR_F_NAME(HAS_SR_TB_BIT6), SNOR_F_NAME(HAS_4BIT_BP), SNOR_F_NAME(HAS_SR_BP3_BIT6), SNOR_F_NAME(IO_MODE_EN_VOLATILE), SNOR_F_NAME(SOFT_RESET), SNOR_F_NAME(SWP_IS_VOLATILE), }; #undef SNOR_F_NAME static const char *spi_nor_protocol_name(enum spi_nor_protocol proto) { switch (proto) { case SNOR_PROTO_1_1_1: return "1S-1S-1S"; case SNOR_PROTO_1_1_2: return "1S-1S-2S"; case SNOR_PROTO_1_1_4: return "1S-1S-4S"; case SNOR_PROTO_1_1_8: return "1S-1S-8S"; case SNOR_PROTO_1_2_2: return "1S-2S-2S"; case SNOR_PROTO_1_4_4: return "1S-4S-4S"; case SNOR_PROTO_1_8_8: return "1S-8S-8S"; case SNOR_PROTO_2_2_2: return "2S-2S-2S"; case SNOR_PROTO_4_4_4: return "4S-4S-4S"; case SNOR_PROTO_8_8_8: return "8S-8S-8S"; case SNOR_PROTO_1_1_1_DTR: return "1D-1D-1D"; case SNOR_PROTO_1_2_2_DTR: return "1D-2D-2D"; case SNOR_PROTO_1_4_4_DTR: return "1D-4D-4D"; case SNOR_PROTO_1_8_8_DTR: return "1D-8D-8D"; case SNOR_PROTO_8_8_8_DTR: return "8D-8D-8D"; } return "<unknown>"; } static void spi_nor_print_flags(struct seq_file *s, unsigned long flags, const char *const *names, int names_len) { bool sep = false; int i; for (i = 0; i < sizeof(flags) * BITS_PER_BYTE; i++) { if (!(flags & BIT(i))) continue; if (sep) seq_puts(s, " | "); sep = true; if (i < names_len && names[i]) seq_puts(s, names[i]); else seq_printf(s, "1<<%d", i); } } static int spi_nor_params_show(struct seq_file *s, void *data) { struct spi_nor *nor = s->private; struct spi_nor_flash_parameter *params = nor->params; struct spi_nor_erase_map *erase_map = ¶ms->erase_map; struct spi_nor_erase_region *region; const struct flash_info *info = nor->info; char buf[16], *str; int i; seq_printf(s, "name\t\t%s\n", info->name); seq_printf(s, "id\t\t%*ph\n", SPI_NOR_MAX_ID_LEN, nor->id); string_get_size(params->size, 1, STRING_UNITS_2, buf, sizeof(buf)); seq_printf(s, "size\t\t%s\n", buf); seq_printf(s, "write size\t%u\n", params->writesize); seq_printf(s, "page size\t%u\n", params->page_size); seq_printf(s, "address nbytes\t%u\n", nor->addr_nbytes); seq_puts(s, "flags\t\t"); spi_nor_print_flags(s, nor->flags, snor_f_names, sizeof(snor_f_names)); seq_puts(s, "\n"); seq_puts(s, "\nopcodes\n"); seq_printf(s, " read\t\t0x%02x\n", nor->read_opcode); seq_printf(s, " dummy cycles\t%u\n", nor->read_dummy); seq_printf(s, " erase\t\t0x%02x\n", nor->erase_opcode); seq_printf(s, " program\t0x%02x\n", nor->program_opcode); switch (nor->cmd_ext_type) { case SPI_NOR_EXT_NONE: str = "none"; break; case SPI_NOR_EXT_REPEAT: str = "repeat"; break; case SPI_NOR_EXT_INVERT: str = "invert"; break; default: str = "<unknown>"; break; } seq_printf(s, " 8D extension\t%s\n", str); seq_puts(s, "\nprotocols\n"); seq_printf(s, " read\t\t%s\n", spi_nor_protocol_name(nor->read_proto)); seq_printf(s, " write\t\t%s\n", spi_nor_protocol_name(nor->write_proto)); seq_printf(s, " register\t%s\n", spi_nor_protocol_name(nor->reg_proto)); seq_puts(s, "\nerase commands\n"); for (i = 0; i < SNOR_ERASE_TYPE_MAX; i++) { struct spi_nor_erase_type *et = &erase_map->erase_type[i]; if (et->size) { string_get_size(et->size, 1, STRING_UNITS_2, buf, sizeof(buf)); seq_printf(s, " %02x (%s) [%d]\n", et->opcode, buf, i); } } if (!(nor->flags & SNOR_F_NO_OP_CHIP_ERASE)) { string_get_size(params->size, 1, STRING_UNITS_2, buf, sizeof(buf)); seq_printf(s, " %02x (%s)\n", SPINOR_OP_CHIP_ERASE, buf); } seq_puts(s, "\nsector map\n"); seq_puts(s, " region (in hex) | erase mask | flags\n"); seq_puts(s, " ------------------+------------+----------\n"); for (region = erase_map->regions; region; region = spi_nor_region_next(region)) { u64 start = region->offset & ~SNOR_ERASE_FLAGS_MASK; u64 flags = region->offset & SNOR_ERASE_FLAGS_MASK; u64 end = start + region->size - 1; seq_printf(s, " %08llx-%08llx | [%c%c%c%c] | %s\n", start, end, flags & BIT(0) ? '0' : ' ', flags & BIT(1) ? '1' : ' ', flags & BIT(2) ? '2' : ' ', flags & BIT(3) ? '3' : ' ', flags & SNOR_OVERLAID_REGION ? "overlaid" : ""); } return 0; } DEFINE_SHOW_ATTRIBUTE(spi_nor_params); static void spi_nor_print_read_cmd(struct seq_file *s, u32 cap, struct spi_nor_read_command *cmd) { seq_printf(s, " %s%s\n", spi_nor_protocol_name(cmd->proto), cap == SNOR_HWCAPS_READ_FAST ? " (fast read)" : ""); seq_printf(s, " opcode\t0x%02x\n", cmd->opcode); seq_printf(s, " mode cycles\t%u\n", cmd->num_mode_clocks); seq_printf(s, " dummy cycles\t%u\n", cmd->num_wait_states); } static void spi_nor_print_pp_cmd(struct seq_file *s, struct spi_nor_pp_command *cmd) { seq_printf(s, " %s\n", spi_nor_protocol_name(cmd->proto)); seq_printf(s, " opcode\t0x%02x\n", cmd->opcode); } static int spi_nor_capabilities_show(struct seq_file *s, void *data) { struct spi_nor *nor = s->private; struct spi_nor_flash_parameter *params = nor->params; u32 hwcaps = params->hwcaps.mask; int i, cmd; seq_puts(s, "Supported read modes by the flash\n"); for (i = 0; i < sizeof(hwcaps) * BITS_PER_BYTE; i++) { if (!(hwcaps & BIT(i))) continue; cmd = spi_nor_hwcaps_read2cmd(BIT(i)); if (cmd < 0) continue; spi_nor_print_read_cmd(s, BIT(i), ¶ms->reads[cmd]); hwcaps &= ~BIT(i); } seq_puts(s, "\nSupported page program modes by the flash\n"); for (i = 0; i < sizeof(hwcaps) * BITS_PER_BYTE; i++) { if (!(hwcaps & BIT(i))) continue; cmd = spi_nor_hwcaps_pp2cmd(BIT(i)); if (cmd < 0) continue; spi_nor_print_pp_cmd(s, ¶ms->page_programs[cmd]); hwcaps &= ~BIT(i); } if (hwcaps) seq_printf(s, "\nunknown hwcaps 0x%x\n", hwcaps); return 0; } DEFINE_SHOW_ATTRIBUTE(spi_nor_capabilities); static void spi_nor_debugfs_unregister(void *data) { struct spi_nor *nor = data; debugfs_remove(nor->debugfs_root); nor->debugfs_root = NULL; } void spi_nor_debugfs_register(struct spi_nor *nor) { struct dentry *rootdir, *d; int ret; /* Create rootdir once. Will never be deleted again. */ rootdir = debugfs_lookup(SPI_NOR_DEBUGFS_ROOT, NULL); if (!rootdir) rootdir = debugfs_create_dir(SPI_NOR_DEBUGFS_ROOT, NULL); ret = devm_add_action(nor->dev, spi_nor_debugfs_unregister, nor); if (ret) return; d = debugfs_create_dir(dev_name(nor->dev), rootdir); nor->debugfs_root = d; debugfs_create_file("params", 0444, d, nor, &spi_nor_params_fops); debugfs_create_file("capabilities", 0444, d, nor, &spi_nor_capabilities_fops); }
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