diff options
Diffstat (limited to 'register.c')
| -rw-r--r-- | register.c | 362 |
1 files changed, 0 insertions, 362 deletions
diff --git a/register.c b/register.c deleted file mode 100644 index 7fc689b..0000000 --- a/register.c +++ /dev/null @@ -1,362 +0,0 @@ -#include <stdio.h> -#include <string.h> -#include <strings.h> -#include <stdlib.h> -#include <stdint.h> -#include <stdarg.h> -#include <fcntl.h> -#include <unistd.h> -#include <sys/ioctl.h> -#include <sys/mman.h> -#include <arpa/inet.h> -#include <errno.h> -#include <assert.h> - -#include "pci.h" - -#include "tools.h" -#include "error.h" - -int pcilib_add_registers(pcilib_t *ctx, size_t n, pcilib_register_description_t *registers) { - pcilib_register_description_t *regs; - size_t size, n_present = 0; - - if (!n) { - for (n = 0; registers[n].bits; n++); - } - - if (ctx->model_info.registers == pcilib_model[ctx->model].registers) { - for (n_present = 0; ctx->model_info.registers[n_present].bits; n_present++); - for (size = 1024; size < 2 * (n + n_present + 1); size<<=1); - regs = (pcilib_register_description_t*)malloc(size * sizeof(pcilib_register_description_t)); - if (!regs) return PCILIB_ERROR_MEMORY; - - ctx->model_info.registers = regs; - ctx->num_reg = n + n_present; - ctx->alloc_reg = size; - - memcpy(ctx->model_info.registers, pcilib_model[ctx->model].registers, (n_present + 1) * sizeof(pcilib_register_description_t)); - } else { - n_present = ctx->num_reg; - if ((n_present + n + 1) > ctx->alloc_reg) { - for (size = ctx->alloc_reg; size < 2 * (n + n_present + 1); size<<=1); - - regs = (pcilib_register_description_t*)realloc(ctx->model_info.registers, size * sizeof(pcilib_register_description_t)); - if (!regs) return PCILIB_ERROR_MEMORY; - - ctx->model_info.registers = regs; - ctx->alloc_reg = size; - } - ctx->num_reg += n; - } - - memcpy(ctx->model_info.registers + ctx->num_reg, ctx->model_info.registers + n_present, sizeof(pcilib_register_description_t)); - memcpy(ctx->model_info.registers + n_present, registers, n * sizeof(pcilib_register_description_t)); - - return 0; -} - -pcilib_register_bank_t pcilib_find_bank_by_addr(pcilib_t *ctx, pcilib_register_bank_addr_t bank) { - pcilib_register_bank_t i; - pcilib_model_description_t *model_info = pcilib_get_model_description(ctx); - pcilib_register_bank_description_t *banks = model_info->banks; - - for (i = 0; banks[i].access; i++) - if (banks[i].addr == bank) return i; - - return -1; -} - -pcilib_register_bank_t pcilib_find_bank_by_name(pcilib_t *ctx, const char *bankname) { - pcilib_register_bank_t i; - pcilib_model_description_t *model_info = pcilib_get_model_description(ctx); - pcilib_register_bank_description_t *banks = model_info->banks; - - for (i = 0; banks[i].access; i++) - if (!strcasecmp(banks[i].name, bankname)) return i; - - return -1; -} - -pcilib_register_bank_t pcilib_find_bank(pcilib_t *ctx, const char *bank) { - pcilib_register_bank_t res; - unsigned long addr; - - if (!bank) { - pcilib_model_description_t *model_info = pcilib_get_model_description(ctx); - pcilib_register_bank_description_t *banks = model_info->banks; - if ((banks)&&(banks[0].access)) return (pcilib_register_bank_t)0; - return -1; - } - - if (pcilib_isxnumber(bank)&&(sscanf(bank,"%lx", &addr) == 1)) { - res = pcilib_find_bank_by_addr(ctx, addr); - if (res != PCILIB_REGISTER_BANK_INVALID) return res; - } - - return pcilib_find_bank_by_name(ctx, bank); -} - - // FIXME create hash during map_register space -pcilib_register_t pcilib_find_register(pcilib_t *ctx, const char *bank, const char *reg) { - pcilib_register_t i; - pcilib_register_bank_t bank_id; - pcilib_register_bank_addr_t bank_addr = 0; - - pcilib_model_description_t *model_info = pcilib_get_model_description(ctx); - pcilib_register_description_t *registers = model_info->registers; - - if (bank) { - bank_id = pcilib_find_bank(ctx, bank); - if (bank_id == PCILIB_REGISTER_BANK_INVALID) { - pcilib_error("Invalid bank (%s) is specified", bank); - return -1; - } - - bank_addr = model_info->banks[bank_id].addr; - } - - for (i = 0; registers[i].bits; i++) { - if ((!strcasecmp(registers[i].name, reg))&&((!bank)||(registers[i].bank == bank_addr))) return i; - } - - if ((ctx->model_info.dma_api)&&(!ctx->dma_ctx)&&(pcilib_get_dma_info(ctx))) { - registers = model_info->registers; - - for (; registers[i].bits; i++) { - if ((!strcasecmp(registers[i].name, reg))&&((!bank)||(registers[i].bank == bank_addr))) return i; - } - } - - return (pcilib_register_t)-1; -}; - -static int pcilib_read_register_space_internal(pcilib_t *ctx, pcilib_register_bank_t bank, pcilib_register_addr_t addr, size_t n, pcilib_register_size_t offset, pcilib_register_size_t bits, pcilib_register_value_t *buf) { - int err; - size_t i; - - pcilib_model_description_t *model_info = pcilib_get_model_description(ctx); - pcilib_register_bank_description_t *b = model_info->banks + bank; - - int access = b->access / 8; - - assert(bits < 8 * sizeof(pcilib_register_value_t)); - - if (((addr + n) > b->size)||(((addr + n) == b->size)&&(bits))) { - if ((b->format)&&(strchr(b->format, 'x'))) - pcilib_error("Accessing register (%u regs at addr 0x%x) out of register space (%u registers total)", bits?(n+1):n, addr, b->size); - else - pcilib_error("Accessing register (%u regs at addr %u) out of register space (%u registers total)", bits?(n+1):n, addr, b->size); - return PCILIB_ERROR_OUTOFRANGE; - } - - err = pcilib_map_register_space(ctx); - if (err) { - pcilib_error("Failed to map the register space"); - return err; - } - - //n += bits / b->access; - //bits %= b->access; - - for (i = 0; i < n; i++) { - err = pcilib_protocol[b->protocol].read(ctx, b, addr + i * access, buf + i); - if (err) break; - } - - if ((bits > 0)&&(!err)) { - pcilib_register_value_t val = 0; - err = pcilib_protocol[b->protocol].read(ctx, b, addr + n * access, &val); - - val = (val >> offset)&BIT_MASK(bits); - memcpy(buf + n, &val, sizeof(pcilib_register_value_t)); - } - - return err; -} - -int pcilib_read_register_space(pcilib_t *ctx, const char *bank, pcilib_register_addr_t addr, size_t n, pcilib_register_value_t *buf) { - pcilib_register_bank_t bank_id = pcilib_find_bank(ctx, bank); - if (bank_id == PCILIB_REGISTER_BANK_INVALID) { - if (bank) pcilib_error("Invalid register bank is specified (%s)", bank); - else pcilib_error("Register bank should be specified"); - return PCILIB_ERROR_INVALID_BANK; - } - - return pcilib_read_register_space_internal(ctx, bank_id, addr, n, 0, 0, buf); -} - -int pcilib_read_register_by_id(pcilib_t *ctx, pcilib_register_t reg, pcilib_register_value_t *value) { - int err; - size_t i, n; - pcilib_register_size_t bits; - pcilib_register_value_t res; - pcilib_register_bank_t bank; - pcilib_register_description_t *r; - pcilib_register_bank_description_t *b; - pcilib_model_description_t *model_info = pcilib_get_model_description(ctx); - - r = model_info->registers + reg; - - bank = pcilib_find_bank_by_addr(ctx, r->bank); - if (bank == PCILIB_REGISTER_BANK_INVALID) return PCILIB_ERROR_INVALID_BANK; - - b = model_info->banks + bank; - - n = r->bits / b->access; - bits = r->bits % b->access; - - pcilib_register_value_t buf[n + 1]; - err = pcilib_read_register_space_internal(ctx, bank, r->addr, n, r->offset, bits, buf); - - if ((b->endianess == PCILIB_BIG_ENDIAN)||((b->endianess == PCILIB_HOST_ENDIAN)&&(ntohs(1) == 1))) { - pcilib_error("Big-endian byte order support is not implemented"); - return PCILIB_ERROR_NOTSUPPORTED; - } else { - res = 0; - if (bits) ++n; - for (i = 0; i < n; i++) { - res |= buf[i] << (i * b->access); - } - } - - *value = res; - - return err; -} - - -int pcilib_read_register(pcilib_t *ctx, const char *bank, const char *regname, pcilib_register_value_t *value) { - int reg; - - reg = pcilib_find_register(ctx, bank, regname); - if (reg < 0) { - pcilib_error("Register (%s) is not found", regname); - return PCILIB_ERROR_NOTFOUND; - } - - return pcilib_read_register_by_id(ctx, reg, value); -} - - -static int pcilib_write_register_space_internal(pcilib_t *ctx, pcilib_register_bank_t bank, pcilib_register_addr_t addr, size_t n, pcilib_register_size_t offset, pcilib_register_size_t bits, pcilib_register_value_t rwmask, pcilib_register_value_t *buf) { - int err; - size_t i; - - pcilib_model_description_t *model_info = pcilib_get_model_description(ctx); - pcilib_register_bank_description_t *b = model_info->banks + bank; - - int access = b->access / 8; - - assert(bits < 8 * sizeof(pcilib_register_value_t)); - - if (((addr + n) > b->size)||(((addr + n) == b->size)&&(bits))) { - if ((b->format)&&(strchr(b->format, 'x'))) - pcilib_error("Accessing register (%u regs at addr 0x%x) out of register space (%u registers total)", bits?(n+1):n, addr, b->size); - else - pcilib_error("Accessing register (%u regs at addr %u) out of register space (%u registers total)", bits?(n+1):n, addr, b->size); - return PCILIB_ERROR_OUTOFRANGE; - } - - err = pcilib_map_register_space(ctx); - if (err) { - pcilib_error("Failed to map the register space"); - return err; - } - - //n += bits / b->access; - //bits %= b->access; - - for (i = 0; i < n; i++) { - err = pcilib_protocol[b->protocol].write(ctx, b, addr + i * access, buf[i]); - if (err) break; - } - - if ((bits > 0)&&(!err)) { - pcilib_register_value_t val = (buf[n]&BIT_MASK(bits))<<offset; - pcilib_register_value_t mask = BIT_MASK(bits)<<offset; - - if (~mask&rwmask) { - pcilib_register_value_t rval; - - err = pcilib_protocol[b->protocol].read(ctx, b, addr + n * access, &rval); - if (err) return err; - - val |= (rval & rwmask & ~mask); - } - - err = pcilib_protocol[b->protocol].write(ctx, b, addr + n * access, val); - } - - return err; -} - -int pcilib_write_register_space(pcilib_t *ctx, const char *bank, pcilib_register_addr_t addr, size_t n, pcilib_register_value_t *buf) { - pcilib_register_bank_t bank_id = pcilib_find_bank(ctx, bank); - if (bank_id == PCILIB_REGISTER_BANK_INVALID) { - if (bank) pcilib_error("Invalid register bank is specified (%s)", bank); - else pcilib_error("Register bank should be specified"); - return PCILIB_ERROR_INVALID_BANK; - } - - return pcilib_write_register_space_internal(ctx, bank_id, addr, n, 0, 0, 0, buf); -} - - -int pcilib_write_register_by_id(pcilib_t *ctx, pcilib_register_t reg, pcilib_register_value_t value) { - int err; - size_t i, n; - pcilib_register_size_t bits; - pcilib_register_bank_t bank; - pcilib_register_value_t res; - pcilib_register_description_t *r; - pcilib_register_bank_description_t *b; - pcilib_model_description_t *model_info = pcilib_get_model_description(ctx); - - r = model_info->registers + reg; - - bank = pcilib_find_bank_by_addr(ctx, r->bank); - if (bank == PCILIB_REGISTER_BANK_INVALID) return PCILIB_ERROR_INVALID_BANK; - - b = model_info->banks + bank; - - n = r->bits / b->access; - bits = r->bits % b->access; - - pcilib_register_value_t buf[n + 1]; - memset(buf, 0, (n + 1) * sizeof(pcilib_register_value_t)); - - if ((b->endianess == PCILIB_BIG_ENDIAN)||((b->endianess == PCILIB_HOST_ENDIAN)&&(ntohs(1) == 1))) { - pcilib_error("Big-endian byte order support is not implemented"); - return PCILIB_ERROR_NOTSUPPORTED; - } else { - if (b->access == sizeof(pcilib_register_value_t) * 8) { - buf[0] = value; - } else { - for (i = 0, res = value; (res > 0)&&(i <= n); ++i) { - buf[i] = res & BIT_MASK(b->access); - res >>= b->access; - } - - if (res) { - pcilib_error("Value %i is too big to fit in the register %s", value, r->name); - return PCILIB_ERROR_OUTOFRANGE; - } - } - } - - err = pcilib_write_register_space_internal(ctx, bank, r->addr, n, r->offset, bits, r->rwmask, buf); - return err; -} - -int pcilib_write_register(pcilib_t *ctx, const char *bank, const char *regname, pcilib_register_value_t value) { - int reg; - - reg = pcilib_find_register(ctx, bank, regname); - if (reg < 0) { - pcilib_error("Register (%s) is not found", regname); - return PCILIB_ERROR_NOTFOUND; - } - - return pcilib_write_register_by_id(ctx, reg, value); -} |