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- #include <stdio.h>
- #include <stdlib.h>
- #include <string.h>
- #include <strings.h>
- #include <alloca.h>
- #include "pci.h"
- #include "pcilib.h"
- #include "view.h"
- #include "error.h"
- #include "value.h"
- int pcilib_add_views(pcilib_t *ctx, size_t n, const pcilib_view_description_t *desc) {
- size_t i;
- void *ptr;
- if (!n) {
- // No padding between array elements
- ptr = (void*)desc;
- while (1) {
- const pcilib_view_description_t *v = (const pcilib_view_description_t*)ptr;
- if (v->name) n++;
- else break;
- ptr += v->api->description_size;
- }
- }
- if ((ctx->num_views + n + 1) > ctx->alloc_views) {
- size_t size;
- pcilib_view_description_t **views;
- for (size = ctx->alloc_views; size < 2 * (n + ctx->num_views + 1); size<<=1);
- views = (pcilib_view_description_t**)realloc(ctx->views, size * sizeof(pcilib_view_description_t*));
- if (!views) return PCILIB_ERROR_MEMORY;
- ctx->views = views;
- ctx->alloc_views = size;
- ctx->model_info.views = (const pcilib_view_description_t**)views;
- }
- // No padding between array elements
- ptr = (void*)desc;
- for (i = 0; i < n; i++) {
- const pcilib_view_description_t *v = (const pcilib_view_description_t*)ptr;
- ctx->views[ctx->num_views + i] = (pcilib_view_description_t*)malloc(v->api->description_size);
- if (!ctx->views[ctx->num_views + i]) {
- size_t j;
- for (j = 0; j < i; j++)
- free(ctx->views[ctx->num_views + j]);
- ctx->views[ctx->num_views] = NULL;
- pcilib_error("Error allocating %zu bytes of memory for the view description", v->api->description_size);
- return PCILIB_ERROR_MEMORY;
- }
- memcpy(ctx->views[ctx->num_views + i], v, v->api->description_size);
- ptr += v->api->description_size;
- }
- ctx->views[ctx->num_views + i] = NULL;
- ctx->num_views += n;
- return 0;
- }
- pcilib_view_t pcilib_find_view_by_name(pcilib_t *ctx, const char *name) {
- pcilib_view_t i;
- for(i = 0; ctx->views[i]; i++) {
- if (!strcasecmp(ctx->views[i]->name, name))
- return i;
- }
- return PCILIB_VIEW_INVALID;
- }
- pcilib_view_t pcilib_find_register_view_by_name(pcilib_t *ctx, pcilib_register_t reg, const char *name) {
- pcilib_view_t i;
- pcilib_register_context_t *regctx = &ctx->register_ctx[reg];
- if (!regctx->views) return PCILIB_VIEW_INVALID;
- for (i = 0; regctx->views[i].name; i++) {
- if (strcasecmp(name, regctx->views[i].name)) {
- return pcilib_find_view_by_name(ctx, regctx->views[i].view);
- }
- }
-
- return PCILIB_VIEW_INVALID;
- }
- // We expect symmetric units. Therefore, we don't distringuish if we read or write
- pcilib_view_t pcilib_find_register_view(pcilib_t *ctx, pcilib_register_t reg, const char *name) {
- pcilib_view_t i;
- pcilib_register_context_t *regctx = &ctx->register_ctx[reg];
- if (!regctx->views) return PCILIB_VIEW_INVALID;
- // Check if view is just a name of listed view
- i = pcilib_find_register_view_by_name(ctx, reg, name);
- if (i != PCILIB_VIEW_INVALID) return i;
- // Check if view is a unit
- for (i = 0; regctx->views[i].name; i++) {
- pcilib_unit_transform_t *trans;
- pcilib_view_t view = pcilib_find_view_by_name(ctx, regctx->views[i].view);
- if (view == PCILIB_VIEW_INVALID) continue;
-
- if (ctx->views[view]->unit) {
- trans = pcilib_find_transform_by_unit_names(ctx, ctx->views[view]->unit, name);
- if (trans) return view;
- }
- }
- return PCILIB_VIEW_INVALID;
- }
- typedef struct {
- pcilib_register_t reg;
- pcilib_view_t view;
- pcilib_unit_transform_t *trans;
- } pcilib_view_configuration_t;
- static int pcilib_detect_view_configuration(pcilib_t *ctx, const char *bank, const char *regname, const char *view_cname, int write_direction, pcilib_view_configuration_t *cfg) {
- pcilib_view_t view;
- pcilib_register_t reg = PCILIB_REGISTER_INVALID;
- pcilib_unit_transform_t *trans = NULL;
- char *view_name = alloca(strlen(view_cname) + 1);
- char *unit_name;
- strcpy(view_name, view_cname);
- unit_name = strchr(view_name, ':');
- if (unit_name) {
- *unit_name = 0;
- unit_name++;
- }
- if (regname) {
- reg = pcilib_find_register(ctx, bank, regname);
- if (reg == PCILIB_REGISTER_INVALID) {
- pcilib_error("Can't find the specified register %s", regname);
- return PCILIB_ERROR_NOTFOUND;
- }
-
- // get value
-
- if (unit_name) view = pcilib_find_register_view_by_name(ctx, reg, view_name);
- else view = pcilib_find_register_view(ctx, reg, view_name);
- if (view == PCILIB_VIEW_INVALID) {
- pcilib_error("Can't find the specified view %s for register %s", view_name, regname);
- return PCILIB_ERROR_NOTFOUND;
- }
- } else {
- view = pcilib_find_view_by_name(ctx, view_name);
- if (view == PCILIB_VIEW_INVALID) {
- pcilib_error("Can't find the specified view %s", view_name);
- return PCILIB_ERROR_NOTFOUND;
- }
- }
- if (unit_name) {
- if (write_direction) trans = pcilib_find_transform_by_unit_names(ctx, unit_name, ctx->views[view]->unit);
- else trans = pcilib_find_transform_by_unit_names(ctx, ctx->views[view]->unit, unit_name);
- if (!trans) {
- pcilib_error("Don't know how to get the requested unit %s for view %s", unit_name, ctx->views[view]->name);
- return PCILIB_ERROR_NOTFOUND;
- }
- // No transform is required
- if (!trans->transform) trans = NULL;
- }
- cfg->reg = reg;
- cfg->view = view;
- cfg->trans = trans;
- return 0;
- }
- int pcilib_read_register_view(pcilib_t *ctx, const char *bank, const char *regname, const char *view, pcilib_value_t *val) {
- int err;
- pcilib_view_configuration_t cfg;
- pcilib_register_value_t regvalue = 0;
- err = pcilib_detect_view_configuration(ctx, bank, regname, view, 0, &cfg);
- if (err) return err;
- if (!ctx->views[cfg.view]->api->read_from_reg) {
- pcilib_error("The view (%s) does not support reading from the register", view);
- return PCILIB_ERROR_NOTSUPPORTED;
- }
- if (regname) {
- err = pcilib_read_register_by_id(ctx, cfg.reg, ®value);
- if (err) {
- pcilib_error("Error (%i) reading register %s", err, regname);
- return err;
- }
- }
- pcilib_clean_value(ctx, val);
- err = ctx->views[cfg.view]->api->read_from_reg(ctx, NULL /*???*/, ®value, val);
- if (err) {
- if (regname)
- pcilib_error("Error (%i) computing view (%s) of register %s", err, view, regname);
- else
- pcilib_error("Error (%i) computing view %s", err, view);
- return err;
- }
- if (cfg.trans) {
- err = pcilib_transform_unit(ctx, cfg.trans, val);
- if (err) return err;
- }
- return 0;
- }
- int pcilib_write_register_view(pcilib_t *ctx, const char *bank, const char *regname, const char *view, const pcilib_value_t *valarg) {
- int err;
- pcilib_value_t val;
- pcilib_view_configuration_t cfg;
- pcilib_register_value_t regvalue = 0;
- err = pcilib_detect_view_configuration(ctx, bank, regname, view, 1, &cfg);
- if (err) return err;
- if (!ctx->views[cfg.view]->api->write_to_reg) {
- pcilib_error("The view (%s) does not support reading from the register", view);
- return PCILIB_ERROR_NOTSUPPORTED;
- }
- err = pcilib_copy_value(ctx, &val, valarg);
- if (err) return err;
- err = pcilib_convert_value_type(ctx, &val, ctx->views[cfg.view]->type);
- if (err) {
- pcilib_error("Error (%i) converting the value of type (%s) to type (%s) used by view (%s)", pcilib_get_type_name(val.type), pcilib_get_type_name(ctx->views[cfg.view]->type), view);
- return err;
- }
- if (cfg.trans) {
- err = pcilib_transform_unit(ctx, cfg.trans, &val);
- if (err) return err;
- }
- err = ctx->views[cfg.view]->api->write_to_reg(ctx, NULL /*???*/, ®value, &val);
- if (err) {
- if (regname)
- pcilib_error("Error (%i) computing view (%s) of register %s", err, view, regname);
- else
- pcilib_error("Error (%i) computing view %s", err, view);
- return err;
- }
- if (regname) {
- err = pcilib_write_register_by_id(ctx, cfg.reg, regvalue);
- if (err) {
- pcilib_error("Error (%i) reading register %s", err, regname);
- return err;
- }
- }
- return 0;
- }
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