78 static inline bool is_valid_host(spi_host_device_t host)  in is_valid_host()  argument
82     return host >= SPI1_HOST && host <= SPI3_HOST;  in is_valid_host()
84     return host == SPI2_HOST;  in is_valid_host()
86     return host >= SPI2_HOST && host <= SPI3_HOST;  in is_valid_host()
90 static inline bool SPI_SLAVE_ISR_ATTR bus_is_iomux(spi_slave_t *host)  in bus_is_iomux()  argument
92     return host->flags&SPICOMMON_BUSFLAG_IOMUX_PINS;  in bus_is_iomux()
95 static void SPI_SLAVE_ISR_ATTR freeze_cs(spi_slave_t *host)  in freeze_cs()  argument
97     esp_rom_gpio_connect_in_signal(GPIO_MATRIX_CONST_ONE_INPUT, host->cs_in_signal, false);  in freeze_cs()
102 static inline void SPI_SLAVE_ISR_ATTR restore_cs(spi_slave_t *host)  in restore_cs()  argument
104     if (host->cs_iomux) {  in restore_cs()
105         gpio_ll_iomux_in(GPIO_HAL_GET_HW(GPIO_PORT_0), host->cfg.spics_io_num, host->cs_in_signal);  in restore_cs()
107         esp_rom_gpio_connect_in_signal(host->cfg.spics_io_num, host->cs_in_signal, false);  in restore_cs()
113     spi_slave_t *host;  member
119     spi_slave_t *host = ((spi_ipc_param_t *)args)->host;  in ipc_isr_reg_to_core()  local
120 …loc(spicommon_irqsource_for_host(host->id), host->intr_flags | ESP_INTR_FLAG_INTRDISABLED, spi_int…  in ipc_isr_reg_to_core()
124 esp_err_t spi_slave_initialize(spi_host_device_t host, const spi_bus_config_t *bus_config, const sp…  in spi_slave_initialize()  argument
131     SPI_CHECK(is_valid_host(host), "invalid host", ESP_ERR_INVALID_ARG);  in spi_slave_initialize()
135 …SPI_CHECK( dma_chan == SPI_DMA_DISABLED || dma_chan == (int)host || dma_chan == SPI_DMA_CH_AUTO, "…  in spi_slave_initialize()
150     spi_chan_claimed=spicommon_periph_claim(host, "spi slave");  in spi_slave_initialize()
153     spihost[host] = malloc(sizeof(spi_slave_t));  in spi_slave_initialize()
154     if (spihost[host] == NULL) {  in spi_slave_initialize()
158     memset(spihost[host], 0, sizeof(spi_slave_t));  in spi_slave_initialize()
159     memcpy(&spihost[host]->cfg, slave_config, sizeof(spi_slave_interface_config_t));  in spi_slave_initialize()
160     memcpy(&spihost[host]->bus_config, bus_config, sizeof(spi_bus_config_t));  in spi_slave_initialize()
161     spihost[host]->id = host;  in spi_slave_initialize()
164     spihost[host]->dma_enabled = use_dma;  in spi_slave_initialize()
166         ret = spicommon_dma_chan_alloc(host, dma_chan, &actual_tx_dma_chan, &actual_rx_dma_chan);  in spi_slave_initialize()
172 …err = spicommon_bus_initialize_io(host, bus_config, SPICOMMON_BUSFLAG_SLAVE|bus_config->flags, &sp…  in spi_slave_initialize()
178         spicommon_cs_initialize(host, slave_config->spics_io_num, 0, !bus_is_iomux(spihost[host]));  in spi_slave_initialize()
180 …spihost[host]->cs_iomux = (slave_config->spics_io_num == spi_periph_signal[host].spics0_iomux_pin)…  in spi_slave_initialize()
181         spihost[host]->cs_in_signal = spi_periph_signal[host].spics_in;  in spi_slave_initialize()
185     if (use_dma) freeze_cs(spihost[host]);  in spi_slave_initialize()
188     spihost[host]->tx_dma_chan = actual_tx_dma_chan;  in spi_slave_initialize()
189     spihost[host]->rx_dma_chan = actual_rx_dma_chan;  in spi_slave_initialize()
194         spihost[host]->max_transfer_sz = dma_desc_ct * SPI_MAX_DMA_LEN;  in spi_slave_initialize()
197         spihost[host]->max_transfer_sz = SOC_SPI_MAXIMUM_BUFFER_SIZE;  in spi_slave_initialize()
201             &spihost[host]->pm_lock);  in spi_slave_initialize()
207     esp_pm_lock_acquire(spihost[host]->pm_lock);  in spi_slave_initialize()
211 …spihost[host]->trans_queue = xQueueCreate(slave_config->queue_size, sizeof(spi_slave_transaction_t…  in spi_slave_initialize()
212     if (!spihost[host]->trans_queue) {  in spi_slave_initialize()
217 …spihost[host]->ret_queue = xQueueCreate(slave_config->queue_size, sizeof(spi_slave_transaction_t *…  in spi_slave_initialize()
218         if (!spihost[host]->ret_queue) {  in spi_slave_initialize()
226         spihost[host]->intr_flags = bus_config->intr_flags;  in spi_slave_initialize()
229             .host = spihost[host],  in spi_slave_initialize()
236 …mon_irqsource_for_host(host), bus_config->intr_flags | ESP_INTR_FLAG_INTRDISABLED, spi_intr, (void…  in spi_slave_initialize()
243     spi_slave_hal_context_t *hal = &spihost[host]->hal;  in spi_slave_initialize()
246         .host_id = host,  in spi_slave_initialize()
247         .dma_in = SPI_LL_GET_HW(host),  in spi_slave_initialize()
248         .dma_out = SPI_LL_GET_HW(host)  in spi_slave_initialize()
273     if (spihost[host]) {  in spi_slave_initialize()
274         if (spihost[host]->trans_queue) vQueueDelete(spihost[host]->trans_queue);  in spi_slave_initialize()
275         if (spihost[host]->ret_queue) vQueueDelete(spihost[host]->ret_queue);  in spi_slave_initialize()
276         free(spihost[host]->hal.dmadesc_tx);  in spi_slave_initialize()
277         free(spihost[host]->hal.dmadesc_rx);  in spi_slave_initialize()
279         if (spihost[host]->pm_lock) {  in spi_slave_initialize()
280             esp_pm_lock_release(spihost[host]->pm_lock);  in spi_slave_initialize()
281             esp_pm_lock_delete(spihost[host]->pm_lock);  in spi_slave_initialize()
285     spi_slave_hal_deinit(&spihost[host]->hal);  in spi_slave_initialize()
286     if (spihost[host]->dma_enabled) {  in spi_slave_initialize()
287         spicommon_dma_chan_free(host);  in spi_slave_initialize()
290     free(spihost[host]);  in spi_slave_initialize()
291     spihost[host] = NULL;  in spi_slave_initialize()
292     spicommon_periph_free(host);  in spi_slave_initialize()
297 esp_err_t spi_slave_free(spi_host_device_t host)  in spi_slave_free()  argument
299     SPI_CHECK(is_valid_host(host), "invalid host", ESP_ERR_INVALID_ARG);  in spi_slave_free()
300     SPI_CHECK(spihost[host], "host not slave", ESP_ERR_INVALID_ARG);  in spi_slave_free()
301     if (spihost[host]->trans_queue) vQueueDelete(spihost[host]->trans_queue);  in spi_slave_free()
302     if (spihost[host]->ret_queue) vQueueDelete(spihost[host]->ret_queue);  in spi_slave_free()
303     if (spihost[host]->dma_enabled) {  in spi_slave_free()
304         spicommon_dma_chan_free(host);  in spi_slave_free()
306     spicommon_bus_free_io_cfg(&spihost[host]->bus_config);  in spi_slave_free()
307     free(spihost[host]->hal.dmadesc_tx);  in spi_slave_free()
308     free(spihost[host]->hal.dmadesc_rx);  in spi_slave_free()
309     esp_intr_free(spihost[host]->intr);  in spi_slave_free()
311     esp_pm_lock_release(spihost[host]->pm_lock);  in spi_slave_free()
312     esp_pm_lock_delete(spihost[host]->pm_lock);  in spi_slave_free()
314     free(spihost[host]);  in spi_slave_free()
315     spihost[host] = NULL;  in spi_slave_free()
316     spicommon_periph_free(host);  in spi_slave_free()
334 esp_err_t SPI_SLAVE_ATTR spi_slave_queue_reset(spi_host_device_t host)  in spi_slave_queue_reset()  argument
336     SPI_CHECK(is_valid_host(host), "invalid host", ESP_ERR_INVALID_ARG);  in spi_slave_queue_reset()
337     SPI_CHECK(spihost[host], "host not slave", ESP_ERR_INVALID_ARG);  in spi_slave_queue_reset()
339     esp_intr_disable(spihost[host]->intr);  in spi_slave_queue_reset()
340     spi_ll_set_int_stat(spihost[host]->hal.hw);  in spi_slave_queue_reset()
342     spihost[host]->cur_trans = NULL;  in spi_slave_queue_reset()
343     xQueueReset(spihost[host]->trans_queue);  in spi_slave_queue_reset()
348 esp_err_t SPI_SLAVE_ISR_ATTR spi_slave_queue_reset_isr(spi_host_device_t host)  in spi_slave_queue_reset_isr()  argument
350     ESP_RETURN_ON_FALSE_ISR(is_valid_host(host), ESP_ERR_INVALID_ARG, SPI_TAG, "invalid host");  in spi_slave_queue_reset_isr()
351     ESP_RETURN_ON_FALSE_ISR(spihost[host], ESP_ERR_INVALID_ARG, SPI_TAG, "host not slave");  in spi_slave_queue_reset_isr()
355     while( pdFALSE == xQueueIsQueueEmptyFromISR(spihost[host]->trans_queue)) {  in spi_slave_queue_reset_isr()
356         xQueueReceiveFromISR(spihost[host]->trans_queue, &trans, &do_yield);  in spi_slave_queue_reset_isr()
362     spihost[host]->cur_trans = NULL;  in spi_slave_queue_reset_isr()
366 esp_err_t SPI_SLAVE_ATTR spi_slave_queue_trans(spi_host_device_t host, const spi_slave_transaction_…  in spi_slave_queue_trans()  argument
369     SPI_CHECK(is_valid_host(host), "invalid host", ESP_ERR_INVALID_ARG);  in spi_slave_queue_trans()
370     SPI_CHECK(spihost[host], "host not slave", ESP_ERR_INVALID_ARG);  in spi_slave_queue_trans()
371 …SPI_CHECK(spihost[host]->dma_enabled == 0 || trans_desc->tx_buffer==NULL || esp_ptr_dma_capable(tr…  in spi_slave_queue_trans()
373     SPI_CHECK(spihost[host]->dma_enabled == 0 || trans_desc->rx_buffer==NULL ||  in spi_slave_queue_trans()
378 …SPI_CHECK(trans_desc->length <= spihost[host]->max_transfer_sz * 8, "data transfer > host maximum"…  in spi_slave_queue_trans()
379     r = xQueueSend(spihost[host]->trans_queue, (void *)&trans_desc, ticks_to_wait);  in spi_slave_queue_trans()
381     esp_intr_enable(spihost[host]->intr);  in spi_slave_queue_trans()
385 esp_err_t SPI_SLAVE_ISR_ATTR spi_slave_queue_trans_isr(spi_host_device_t host, const spi_slave_tran…  in spi_slave_queue_trans_isr()  argument
389     ESP_RETURN_ON_FALSE_ISR(is_valid_host(host), ESP_ERR_INVALID_ARG, SPI_TAG, "invalid host");  in spi_slave_queue_trans_isr()
390     ESP_RETURN_ON_FALSE_ISR(spihost[host], ESP_ERR_INVALID_ARG, SPI_TAG, "host not slave");  in spi_slave_queue_trans_isr()
391 …ESP_RETURN_ON_FALSE_ISR(spihost[host]->dma_enabled == 0 || trans_desc->tx_buffer==NULL || esp_ptr_…  in spi_slave_queue_trans_isr()
393     ESP_RETURN_ON_FALSE_ISR(spihost[host]->dma_enabled == 0 || trans_desc->rx_buffer==NULL ||  in spi_slave_queue_trans_isr()
397 …ESP_RETURN_ON_FALSE_ISR(trans_desc->length <= spihost[host]->max_transfer_sz * 8, ESP_ERR_INVALID_…  in spi_slave_queue_trans_isr()
399     r = xQueueSendFromISR(spihost[host]->trans_queue, (void *)&trans_desc, &do_yield);  in spi_slave_queue_trans_isr()
409 esp_err_t SPI_SLAVE_ATTR spi_slave_get_trans_result(spi_host_device_t host, spi_slave_transaction_t…  in spi_slave_get_trans_result()  argument
412     SPI_CHECK(is_valid_host(host), "invalid host", ESP_ERR_INVALID_ARG);  in spi_slave_get_trans_result()
413     SPI_CHECK(spihost[host], "host not slave", ESP_ERR_INVALID_ARG);  in spi_slave_get_trans_result()
415 …SPI_CHECK(!(spihost[host]->cfg.flags & SPI_SLAVE_NO_RETURN_RESULT), "API not Supported!", ESP_ERR_…  in spi_slave_get_trans_result()
417     r = xQueueReceive(spihost[host]->ret_queue, (void *)trans_desc, ticks_to_wait);  in spi_slave_get_trans_result()
423 esp_err_t SPI_SLAVE_ATTR spi_slave_transmit(spi_host_device_t host, spi_slave_transaction_t *trans_…  in spi_slave_transmit()  argument
428     ret = spi_slave_queue_trans(host, trans_desc, ticks_to_wait);  in spi_slave_transmit()
430     ret = spi_slave_get_trans_result(host, &ret_trans, ticks_to_wait);  in spi_slave_transmit()
439     spi_slave_t *host = (spi_slave_t *)arg;  in spi_slave_restart_after_dmareset()  local
440     esp_intr_enable(host->intr);  in spi_slave_restart_after_dmareset()
452     spi_slave_t *host = (spi_slave_t *)arg;  in spi_intr()  local
453     spi_slave_hal_context_t *hal = &host->hal;  in spi_intr()
457     bool use_dma = host->dma_enabled;  in spi_intr()
458     if (host->cur_trans) {  in spi_intr()
460         if (use_dma) freeze_cs(host);  in spi_intr()
463         host->cur_trans->trans_len = spi_slave_hal_get_rcv_bitlen(hal);  in spi_intr()
469 …      spicommon_dmaworkaround_req_reset(host->tx_dma_chan, spi_slave_restart_after_dmareset, host);  in spi_intr()
473         if (host->cfg.post_trans_cb) host->cfg.post_trans_cb(host->cur_trans);  in spi_intr()
475         if(!(host->cfg.flags & SPI_SLAVE_NO_RETURN_RESULT)) {  in spi_intr()
476             xQueueSendFromISR(host->ret_queue, &host->cur_trans, &do_yield);  in spi_intr()
478         host->cur_trans = NULL;  in spi_intr()
485         spicommon_dmaworkaround_idle(host->tx_dma_chan);  in spi_intr()
488             esp_intr_disable(host->intr);  in spi_intr()
496     esp_intr_disable(host->intr);  in spi_intr()
498     r = xQueueReceiveFromISR(host->trans_queue, &trans, &do_yield);  in spi_intr()
504         esp_intr_enable(host->intr);  in spi_intr()
507         host->cur_trans = trans;  in spi_intr()
517             spicommon_dmaworkaround_transfer_active(host->tx_dma_chan);  in spi_intr()
525             restore_cs(host);  in spi_intr()
530         if (host->cfg.post_setup_cb) host->cfg.post_setup_cb(trans);  in spi_intr()