X-Git-Url: https://git.gag.com/?a=blobdiff_plain;f=src%2Fstmf0%2Fao_usb_stm.c;h=652b3b6ca9facebaa742a57392f542f62e4958fa;hb=fe25510fc23031f1a3c1b42edd37067d1989a9f6;hp=691c2d56d830f11b5e3dadf7a8523430077bf560;hpb=a5607aad694c01c01c48229172b289f005a1b6bb;p=fw%2Faltos diff --git a/src/stmf0/ao_usb_stm.c b/src/stmf0/ao_usb_stm.c index 691c2d56..652b3b6c 100644 --- a/src/stmf0/ao_usb_stm.c +++ b/src/stmf0/ao_usb_stm.c @@ -3,7 +3,8 @@ * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; version 2 of the License. + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. * * This program is distributed in the hope that it will be useful, but * WITHOUT ANY WARRANTY; without even the implied warranty of @@ -29,6 +30,10 @@ #error "must define AO_PA11_PA12_RMP" #endif +#ifndef AO_POWER_MANAGEMENT +#define AO_POWER_MANAGEMENT 0 +#endif + #ifndef USE_USB_STDIO #define USE_USB_STDIO 1 #endif @@ -79,29 +84,50 @@ static uint8_t ao_usb_ep0_out_len; /* Buffer description tables */ static union stm_usb_bdt *ao_usb_bdt; /* USB address of end of allocated storage */ +#if AO_USB_DIRECTIO static uint16_t ao_usb_sram_addr; +#endif /* Pointer to ep0 tx/rx buffers in USB memory */ static uint16_t *ao_usb_ep0_tx_buffer; static uint16_t *ao_usb_ep0_rx_buffer; +#if AO_USB_HAS_INT /* Pointer to interrupt buffer in USB memory */ static uint16_t ao_usb_int_tx_offset; +#endif /* Pointer to bulk data tx/rx buffers in USB memory */ +#if AO_USB_HAS_IN static uint16_t ao_usb_in_tx_offset; static uint16_t *ao_usb_in_tx_buffer; -static uint16_t ao_usb_out_rx_offset; -static uint16_t *ao_usb_out_rx_buffer; /* System ram shadow of USB buffer; writing individual bytes is * too much of a pain (sigh) */ static uint8_t ao_usb_tx_buffer[AO_USB_IN_SIZE]; static uint8_t ao_usb_tx_count; +#endif +#if AO_USB_HAS_OUT +static uint16_t ao_usb_out_rx_offset; +static uint16_t *ao_usb_out_rx_buffer; + +/* System ram shadow of USB buffer; writing individual bytes is + * too much of a pain (sigh) */ static uint8_t ao_usb_rx_buffer[AO_USB_OUT_SIZE]; static uint8_t ao_usb_rx_count, ao_usb_rx_pos; +#endif +#if AO_USB_HAS_IN2 +static uint16_t ao_usb_in2_tx_offset; +static uint16_t *ao_usb_in2_tx_buffer; + +/* System ram shadow of USB buffer; writing individual bytes is + * too much of a pain (sigh) */ +static uint8_t ao_usb_tx2_buffer[AO_USB_IN_SIZE]; +static uint8_t ao_usb_tx2_count; +#endif + /* * End point register indices */ @@ -110,6 +136,7 @@ static uint8_t ao_usb_rx_count, ao_usb_rx_pos; #define AO_USB_INT_EPR 1 #define AO_USB_OUT_EPR 2 #define AO_USB_IN_EPR 3 +#define AO_USB_IN2_EPR 4 /* Marks when we don't need to send an IN packet. * This happens only when the last IN packet is not full, @@ -124,6 +151,16 @@ static uint8_t ao_usb_in_flushed; */ static uint8_t ao_usb_in_pending; +#if AO_USB_HAS_IN2 +/* Marks when we have delivered an IN packet to the hardware + * and it has not been received yet. ao_sleep on this address + * to wait for it to be delivered. + */ +static uint8_t ao_usb_in2_pending; +static uint16_t in2_count; +static uint8_t ao_usb_in2_flushed; +#endif + /* Marks when an OUT packet has been received by the hardware * but not pulled to the shadow buffer. */ @@ -148,7 +185,7 @@ static inline uint32_t set_toggle(uint32_t current_value, static inline uint16_t *ao_usb_packet_buffer_addr(uint16_t sram_addr) { - return (uint16_t *) (stm_usb_sram + sram_addr); + return (uint16_t *) (void *) (stm_usb_sram + sram_addr); } static inline uint16_t ao_usb_packet_buffer_offset(uint16_t *addr) @@ -328,27 +365,44 @@ ao_usb_init_ep(uint8_t ep, uint32_t addr, uint32_t type, uint32_t stat_rx, uint3 static void ao_usb_alloc_buffers(void) { - ao_usb_sram_addr = 0; + uint16_t sram_addr = 0; ao_usb_bdt = (void *) stm_usb_sram; - ao_usb_sram_addr += 8 * STM_USB_BDT_SIZE; + sram_addr += 8 * STM_USB_BDT_SIZE; + + ao_usb_ep0_tx_buffer = ao_usb_packet_buffer_addr(sram_addr); + sram_addr += AO_USB_CONTROL_SIZE; - ao_usb_ep0_tx_buffer = ao_usb_packet_buffer_addr(ao_usb_sram_addr); - ao_usb_sram_addr += AO_USB_CONTROL_SIZE; + ao_usb_ep0_rx_buffer = ao_usb_packet_buffer_addr(sram_addr); + sram_addr += AO_USB_CONTROL_SIZE; - ao_usb_ep0_rx_buffer = ao_usb_packet_buffer_addr(ao_usb_sram_addr); - ao_usb_sram_addr += AO_USB_CONTROL_SIZE; - ao_usb_int_tx_offset = ao_usb_sram_addr; - ao_usb_sram_addr += AO_USB_INT_SIZE; +#if AO_USB_HAS_INT + ao_usb_int_tx_offset = sram_addr; + sram_addr += AO_USB_INT_SIZE; +#endif - ao_usb_out_rx_buffer = ao_usb_packet_buffer_addr(ao_usb_sram_addr); - ao_usb_out_rx_offset = ao_usb_sram_addr; - ao_usb_sram_addr += AO_USB_OUT_SIZE; +#if AO_USB_HAS_OUT + ao_usb_out_rx_buffer = ao_usb_packet_buffer_addr(sram_addr); + ao_usb_out_rx_offset = sram_addr; + sram_addr += AO_USB_OUT_SIZE; +#endif - ao_usb_in_tx_buffer = ao_usb_packet_buffer_addr(ao_usb_sram_addr); - ao_usb_in_tx_offset = ao_usb_sram_addr; - ao_usb_sram_addr += AO_USB_IN_SIZE; +#if AO_USB_HAS_IN + ao_usb_in_tx_buffer = ao_usb_packet_buffer_addr(sram_addr); + ao_usb_in_tx_offset = sram_addr; + sram_addr += AO_USB_IN_SIZE; +#endif + +#if AO_USB_HAS_IN2 + ao_usb_in2_tx_buffer = ao_usb_packet_buffer_addr(sram_addr); + ao_usb_in2_tx_offset = sram_addr; + sram_addr += AO_USB_IN_SIZE; +#endif + +#if AO_USB_DIRECTIO + ao_usb_sram_addr = sram_addr; +#endif } static void @@ -390,6 +444,17 @@ ao_usb_set_ep0(void) ao_usb_set_address(0); ao_usb_running = 0; + + /* Reset our internal state + */ + + ao_usb_ep0_state = AO_USB_EP0_IDLE; + + ao_usb_ep0_in_data = NULL; + ao_usb_ep0_in_len = 0; + + ao_usb_ep0_out_data = 0; + ao_usb_ep0_out_len = 0; } static void @@ -397,6 +462,7 @@ ao_usb_set_configuration(void) { debug ("ao_usb_set_configuration\n"); +#if AO_USB_HAS_INT /* Set up the INT end point */ ao_usb_bdt[AO_USB_INT_EPR].single.addr_tx = ao_usb_int_tx_offset; ao_usb_bdt[AO_USB_INT_EPR].single.count_tx = 0; @@ -406,7 +472,9 @@ ao_usb_set_configuration(void) STM_USB_EPR_EP_TYPE_INTERRUPT, STM_USB_EPR_STAT_RX_DISABLED, STM_USB_EPR_STAT_TX_NAK); +#endif +#if AO_USB_HAS_OUT /* Set up the OUT end point */ ao_usb_bdt[AO_USB_OUT_EPR].single.addr_rx = ao_usb_out_rx_offset; ao_usb_bdt[AO_USB_OUT_EPR].single.count_rx = ((1 << STM_USB_BDT_COUNT_RX_BL_SIZE) | @@ -417,7 +485,9 @@ ao_usb_set_configuration(void) STM_USB_EPR_EP_TYPE_BULK, STM_USB_EPR_STAT_RX_VALID, STM_USB_EPR_STAT_TX_DISABLED); +#endif +#if AO_USB_HAS_IN /* Set up the IN end point */ ao_usb_bdt[AO_USB_IN_EPR].single.addr_tx = ao_usb_in_tx_offset; ao_usb_bdt[AO_USB_IN_EPR].single.count_tx = 0; @@ -427,6 +497,33 @@ ao_usb_set_configuration(void) STM_USB_EPR_EP_TYPE_BULK, STM_USB_EPR_STAT_RX_DISABLED, STM_USB_EPR_STAT_TX_NAK); +#endif + +#if AO_USB_HAS_IN2 + /* Set up the IN2 end point */ + ao_usb_bdt[AO_USB_IN2_EPR].single.addr_tx = ao_usb_in2_tx_offset; + ao_usb_bdt[AO_USB_IN2_EPR].single.count_tx = 0; + + ao_usb_init_ep(AO_USB_IN2_EPR, + AO_USB_IN2_EP, + STM_USB_EPR_EP_TYPE_BULK, + STM_USB_EPR_STAT_RX_DISABLED, + STM_USB_EPR_STAT_TX_NAK); +#endif + + ao_usb_in_flushed = 0; + ao_usb_in_pending = 0; + ao_wakeup(&ao_usb_in_pending); +#if AO_USB_HAS_IN2 + ao_usb_in2_flushed = 0; + ao_usb_in2_pending = 0; + ao_wakeup(&ao_usb_in2_pending); +#endif + + ao_usb_out_avail = 0; + ao_usb_configuration = 0; + + ao_wakeup(AO_USB_OUT_SLEEP_ADDR); ao_usb_running = 1; #if AO_USB_DIRECTIO @@ -439,7 +536,6 @@ static uint16_t int_count; static uint16_t in_count; static uint16_t out_count; static uint16_t reset_count; -static uint16_t suspend_count; /* The USB memory must be accessed in 16-bit units */ @@ -561,10 +657,40 @@ ao_usb_ep0_in_start(uint16_t max) static struct ao_usb_line_coding ao_usb_line_coding = {115200, 0, 0, 8}; +#if AO_USB_DEVICE_ID_SERIAL +static uint8_t ao_usb_serial[2 + 48]; + +/* Convert a 32-bit value to 8 hexidecimal UCS2 characters */ +static void +hex_to_ucs2(uint32_t in, uint8_t *out) +{ + int i; + + for (i = 28; i >= 0; i -= 4) { + uint8_t bits = (in >> i) & 0xf; + *out++ = ((bits < 10) ? '0' : ('a' - 10)) + bits; + *out++ = 0; + } +} + +/* Encode the device ID (96 bits) in hexidecimal to use as a device + * serial number + */ +static void +ao_usb_serial_init(void) +{ + ao_usb_serial[0] = 50; /* length */ + ao_usb_serial[1] = AO_USB_DESC_STRING; + hex_to_ucs2(stm_device_id.u_id0, ao_usb_serial + 2 + 0); + hex_to_ucs2(stm_device_id.u_id1, ao_usb_serial + 2 + 16); + hex_to_ucs2(stm_device_id.u_id2, ao_usb_serial + 2 + 32); +} +#endif + /* Walk through the list of descriptors and find a match */ static void -ao_usb_get_descriptor(uint16_t value) +ao_usb_get_descriptor(uint16_t value, uint16_t length) { const uint8_t *descriptor; uint8_t type = value >> 8; @@ -578,6 +704,15 @@ ao_usb_get_descriptor(uint16_t value) len = descriptor[2]; else len = descriptor[0]; +#if AO_USB_DEVICE_ID_SERIAL + /* Slightly hacky - the serial number is string 3 */ + if (type == AO_USB_DESC_STRING && (value & 0xff) == 3) { + descriptor = ao_usb_serial; + len = sizeof (ao_usb_serial); + } +#endif + if (len > length) + len = length; ao_usb_ep0_in_set(descriptor, len); break; } @@ -622,7 +757,7 @@ ao_usb_ep0_setup(void) break; case AO_USB_REQ_GET_DESCRIPTOR: debug ("get descriptor %d\n", ao_usb_setup.value); - ao_usb_get_descriptor(ao_usb_setup.value); + ao_usb_get_descriptor(ao_usb_setup.value, ao_usb_setup.length); break; case AO_USB_REQ_GET_CONFIGURATION: debug ("get configuration %d\n", ao_usb_configuration); @@ -718,6 +853,7 @@ ao_usb_ep0_handle(uint8_t receive) } } +#if AO_POWER_MANAGEMENT void ao_usb_suspend(void) { @@ -734,6 +870,7 @@ ao_usb_wakeup(void) stm_usb.cntr &= ~(1 << STM_USB_CNTR_FSUSP); ao_power_resume(); } +#endif void stm_usb_isr(void) @@ -787,6 +924,16 @@ stm_usb_isr(void) ao_wakeup(&ao_usb_in_pending); } break; +#if AO_USB_HAS_IN2 + case AO_USB_IN2_EPR: + ++in2_count; + _tx_dbg1("TX2 ISR", epr); + if (ao_usb_epr_ctr_tx(epr)) { + ao_usb_in2_pending = 0; + ao_wakeup(&ao_usb_in2_pending); + } + break; +#endif case AO_USB_INT_EPR: ++int_count; if (ao_usb_epr_ctr_tx(epr)) @@ -801,8 +948,8 @@ stm_usb_isr(void) debug ("\treset\n"); ao_usb_set_ep0(); } +#if AO_POWER_MANAGEMENT if (istr & (1 << STM_USB_ISTR_SUSP)) { - ++suspend_count; debug ("\tsuspend\n"); ao_usb_suspend(); } @@ -810,8 +957,10 @@ stm_usb_isr(void) debug ("\twakeup\n"); ao_usb_wakeup(); } +#endif } +#if AO_USB_HAS_IN /* Queue the current IN buffer for transmission */ static void _ao_usb_in_send(void) @@ -890,7 +1039,90 @@ ao_usb_putchar(char c) } ao_arch_release_interrupts(); } +#endif + +#if AO_USB_HAS_IN2 +/* Queue the current IN buffer for transmission */ +static void +_ao_usb_in2_send(void) +{ + _tx_dbg0("in2_send start"); + debug ("send2 %d\n", ao_usb_tx_count); + while (ao_usb_in2_pending) + ao_sleep(&ao_usb_in2_pending); + ao_usb_in2_pending = 1; + if (ao_usb_tx2_count != AO_USB_IN_SIZE) + ao_usb_in2_flushed = 1; + ao_usb_copy_tx(ao_usb_tx2_buffer, ao_usb_in2_tx_buffer, ao_usb_tx2_count); + ao_usb_bdt[AO_USB_IN2_EPR].single.addr_tx = ao_usb_in_tx_offset; + ao_usb_bdt[AO_USB_IN2_EPR].single.count_tx = ao_usb_tx_count; + ao_usb_tx2_count = 0; + _ao_usb_set_stat_tx(AO_USB_IN2_EPR, STM_USB_EPR_STAT_TX_VALID); + _tx_dbg0("in2_send end"); +} + +/* Wait for a free IN buffer. Interrupts are blocked */ +static void +_ao_usb_in2_wait(void) +{ + for (;;) { + /* Check if the current buffer is writable */ + if (ao_usb_tx2_count < AO_USB_IN_SIZE) + break; + + _tx_dbg0("in2_wait top"); + /* Wait for an IN buffer to be ready */ + while (ao_usb_in2_pending) + ao_sleep(&ao_usb_in2_pending); + _tx_dbg0("in_wait bottom"); + } +} + +void +ao_usb_flush2(void) +{ + if (!ao_usb_running) + return; + + /* Anytime we've sent a character since + * the last time we flushed, we'll need + * to send a packet -- the only other time + * we would send a packet is when that + * packet was full, in which case we now + * want to send an empty packet + */ + ao_arch_block_interrupts(); + while (!ao_usb_in2_flushed) { + _tx_dbg0("flush2 top"); + _ao_usb_in2_send(); + _tx_dbg0("flush2 end"); + } + ao_arch_release_interrupts(); +} + +void +ao_usb_putchar2(char c) +{ + if (!ao_usb_running) + return; + + ao_arch_block_interrupts(); + _ao_usb_in2_wait(); + + ao_usb_in2_flushed = 0; + ao_usb_tx2_buffer[ao_usb_tx2_count++] = (uint8_t) c; + /* Send the packet when full */ + if (ao_usb_tx2_count == AO_USB_IN_SIZE) { + _tx_dbg0("putchar2 full"); + _ao_usb_in2_send(); + _tx_dbg0("putchar2 flushed"); + } + ao_arch_release_interrupts(); +} +#endif + +#if AO_USB_HAS_OUT static void _ao_usb_out_recv(void) { @@ -947,6 +1179,7 @@ ao_usb_getchar(void) ao_arch_release_interrupts(); return c; } +#endif #if AO_USB_DIRECTIO uint16_t * @@ -959,14 +1192,6 @@ ao_usb_alloc(void) return buffer; } -void -ao_usb_free(uint16_t *addr) -{ - uint16_t offset = ao_usb_packet_buffer_offset(addr); - if (offset < ao_usb_sram_addr) - ao_usb_sram_addr = offset; -} - void ao_usb_write(uint16_t *buffer, uint16_t len) { @@ -1001,6 +1226,43 @@ ao_usb_write(uint16_t *buffer, uint16_t len) _ao_usb_set_stat_tx(AO_USB_IN_EPR, STM_USB_EPR_STAT_TX_VALID); ao_arch_release_interrupts(); } + +#if AO_USB_HAS_IN2 +void +ao_usb_write2(uint16_t *buffer, uint16_t len) +{ + ao_arch_block_interrupts(); + + /* Wait for everything to be ready at the same time */ + for (;;) { + /* Make sure USB is connected */ + if (!ao_usb_running) { + ao_sleep(&ao_usb_running); + continue; + } + + /* Flush any pending regular I/O */ + if (ao_usb_tx2_count) { + _ao_usb_in2_send(); + continue; + } + + /* Wait for an idle IN buffer */ + if (ao_usb_in2_pending) { + ao_sleep(&ao_usb_in2_pending); + continue; + } + break; + } + + ao_usb_in2_pending = 1; + ao_usb_in2_flushed = (len != AO_USB_IN_SIZE); + ao_usb_bdt[AO_USB_IN2_EPR].single.addr_tx = ao_usb_packet_buffer_offset(buffer); + ao_usb_bdt[AO_USB_IN2_EPR].single.count_tx = len; + _ao_usb_set_stat_tx(AO_USB_IN2_EPR, STM_USB_EPR_STAT_TX_VALID); + ao_arch_release_interrupts(); +} +#endif #endif void @@ -1072,8 +1334,8 @@ ao_usb_enable(void) stm_usb.cntr = ((1 << STM_USB_CNTR_CTRM) | (0 << STM_USB_CNTR_PMAOVRM) | (0 << STM_USB_CNTR_ERRM) | - (1 << STM_USB_CNTR_WKUPM) | - (1 << STM_USB_CNTR_SUSPM) | + (AO_POWER_MANAGEMENT << STM_USB_CNTR_WKUPM) | + (AO_POWER_MANAGEMENT << STM_USB_CNTR_SUSPM) | (1 << STM_USB_CNTR_RESETM) | (0 << STM_USB_CNTR_SOFM) | (0 << STM_USB_CNTR_ESOFM) | @@ -1112,8 +1374,8 @@ ao_usb_echo(void) static void ao_usb_irq(void) { - printf ("control: %d out: %d in: %d int: %d reset: %d suspend %d\n", - control_count, out_count, in_count, int_count, reset_count, suspend_count); + printf ("control: %d out: %d in: %d int: %d reset: %d\n", + control_count, out_count, in_count, int_count, reset_count); } __code struct ao_cmds ao_usb_cmds[] = { @@ -1131,7 +1393,13 @@ ao_usb_init(void) /* Set PA11/PA12 remapping bit */ stm_syscfg.cfgr1 |= (AO_PA11_PA12_RMP << STM_SYSCFG_CFGR1_PA11_PA12_RMP); +#ifndef AO_USB_START_DISABLED ao_usb_enable(); +#endif + +#if AO_USB_DEVICE_ID_SERIAL + ao_usb_serial_init(); +#endif debug ("ao_usb_init\n"); ao_usb_ep0_state = AO_USB_EP0_IDLE;