From cc0a7ad63f71f75972d5764ce4294f15c24c18b3 Mon Sep 17 00:00:00 2001 From: "(no author)" <(no author)@6dc7ffe9-61d6-0310-9af1-9938baff3ed1> Date: Wed, 23 Aug 2006 20:29:47 +0000 Subject: - add support for filling second TX packet in FIFO while first is transmitting to host - remove unneeded variable from data structure - add separate EP0 debugging definition git-svn-id: https://svn.openpcd.org:2342/trunk@127 6dc7ffe9-61d6-0310-9af1-9938baff3ed1 --- openpcd/firmware/src/pcd_enumerate.c | 84 ++++++++++++++++++++---------------- 1 file changed, 48 insertions(+), 36 deletions(-) (limited to 'openpcd') diff --git a/openpcd/firmware/src/pcd_enumerate.c b/openpcd/firmware/src/pcd_enumerate.c index 982a1b8..3ac03fe 100644 --- a/openpcd/firmware/src/pcd_enumerate.c +++ b/openpcd/firmware/src/pcd_enumerate.c @@ -26,6 +26,7 @@ #include "dbgu.h" //#define DEBUG_UDP_IRQ +//#ifdef DEBUG_UDP_EP0 #define AT91C_EP_OUT 1 #define AT91C_EP_OUT_SIZE 0x40 @@ -41,7 +42,6 @@ struct ep_ctx { struct udp_pcd { AT91PS_UDP pUdp; unsigned char cur_config; - unsigned char cur_connection; unsigned int cur_rcv_bank; struct ep_ctx ep[4]; }; @@ -159,27 +159,27 @@ int udp_refill_ep(int ep, struct req_ctx *rctx) u_int16_t i; AT91PS_UDP pUDP = upcd.pUdp; + if (!upcd.cur_config) + return -ENXIO; + if (rctx->tx.tot_len > AT91C_EP_IN_SIZE) { - DEBUGPCRF("TOO LARGE!!!!!!!!!!!!!!!!!!!!!!!!!!!\n"); + DEBUGPCRF("TOO LARGE!!!!!!!!!!!!!!!!!!!!!!!!!!! (%d > %d)", + rctx->tx.tot_len, AT91C_EP_IN_SIZE); return -EINVAL; } - DEBUGP("refilling EP%u ", ep); - - /* FIXME: state machine to handle two banks of FIFO memory, etc */ - if (atomic_read(&upcd.ep[ep].pkts_in_transit) >= 1) + if (atomic_read(&upcd.ep[ep].pkts_in_transit) == 2) return -EBUSY; /* fill FIFO/DPR */ for (i = 0; i < rctx->tx.tot_len; i++) pUDP->UDP_FDR[ep] = rctx->tx.data[i]; - if (atomic_read(&upcd.ep[ep].pkts_in_transit) == 0) { - /* start transmit */ + if (atomic_inc_return(&upcd.ep[ep].pkts_in_transit) == 1) { + /* not been transmitting before, start transmit */ pUDP->UDP_CSR[ep] |= AT91C_UDP_TXPKTRDY; - atomic_inc(&upcd.ep[ep].pkts_in_transit); } - + /* return rctx to pool of free contexts */ req_ctx_put(rctx); @@ -280,9 +280,7 @@ static void udp_irq(void) if (rctx) udp_refill_ep(2, rctx); else - DEBUGP("NO_RCTX_pending "); - - /* FIXME: re-fill second packet into DPR */ + DEBUGI("NO_RCTX_pending "); } } if (isr & AT91C_UDP_EPINT3) { @@ -326,7 +324,6 @@ static int udp_open(AT91PS_UDP pUdp) DEBUGPCRF("entering"); upcd.pUdp = pUdp; upcd.cur_config = 0; - upcd.cur_connection = 0; upcd.cur_rcv_bank = AT91C_UDP_RX_DATA_BK0; AT91F_AIC_ConfigureIt(AT91C_BASE_AIC, AT91C_ID_UDP, @@ -420,13 +417,19 @@ u_int32_t AT91F_UDP_Write(u_int8_t irq, const unsigned char *pData, u_int32_t le } #endif +#ifdef DEBUG_UDP_EP0 +#define DEBUGE(x, args ...) DEBUGP(x, ## args) +#else +#define DEBUGE(x, args ...) do { } while (0) +#endif + /* Send Data through the control endpoint */ static void udp_ep0_send_data(AT91PS_UDP pUdp, const char *pData, u_int32_t length) { u_int32_t cpt = 0; AT91_REG csr; - DEBUGP("send_data: %u bytes ", length); + DEBUGE("send_data: %u bytes ", length); do { cpt = MIN(length, 8); @@ -447,7 +450,7 @@ static void udp_ep0_send_data(AT91PS_UDP pUdp, const char *pData, u_int32_t leng /* Data IN stage has been stopped by a status OUT */ if (csr & AT91C_UDP_RX_DATA_BK0) { pUdp->UDP_CSR[0] &= ~(AT91C_UDP_RX_DATA_BK0); - DEBUGP("stopped by status out "); + DEBUGE("stopped by status out "); return; } } while (!(csr & AT91C_UDP_TXCOMP)); @@ -486,20 +489,26 @@ static void udp_ep0_handler(void) u_int16_t wValue, wIndex, wLength, wStatus; u_int32_t csr = pUDP->UDP_CSR[0]; - DEBUGP("CSR=0x%04x ", csr); + DEBUGE("CSR=0x%04x ", csr); if (csr & AT91C_UDP_STALLSENT) { - DEBUGP("ACK_STALLSENT "); + DEBUGE("ACK_STALLSENT "); pUDP->UDP_CSR[0] = ~AT91C_UDP_STALLSENT; } if (csr & AT91C_UDP_RX_DATA_BK0) { - DEBUGP("ACK_BANK0 "); + DEBUGE("ACK_BANK0 "); pUDP->UDP_CSR[0] &= ~AT91C_UDP_RX_DATA_BK0; } if (!(csr & AT91C_UDP_RXSETUP)) { - DEBUGP("no setup packet "); + DEBUGE("no setup packet "); + return; + } + + DEBUGE("len=%d ", csr >> 16); + if (csr >> 16 == 0) { + DEBUGE("empty packet "); return; } @@ -512,7 +521,10 @@ static void udp_ep0_handler(void) wLength = (pUDP->UDP_FDR[0] & 0xFF); wLength |= (pUDP->UDP_FDR[0] << 8); + DEBUGE("bmRequestType=0x%2x ", bmRequestType); + if (bmRequestType & 0x80) { + DEBUGE("DATA_IN=1 "); pUDP->UDP_CSR[0] |= AT91C_UDP_DIR; while (!(pUDP->UDP_CSR[0] & AT91C_UDP_DIR)) ; } @@ -520,10 +532,10 @@ static void udp_ep0_handler(void) while ((pUDP->UDP_CSR[0] & AT91C_UDP_RXSETUP)) ; /* Handle supported standard device request Cf Table 9-3 in USB - * specification Rev 1.1 */ + * speciication Rev 1.1 */ switch ((bRequest << 8) | bmRequestType) { case STD_GET_DESCRIPTOR: - DEBUGP("GET_DESCRIPTOR "); + DEBUGE("GET_DESCRIPTOR "); if (wValue == 0x100) /* Return Device Descriptor */ udp_ep0_send_data(pUDP, (const char *) &dev_descriptor, MIN(sizeof(dev_descriptor), wLength)); @@ -534,15 +546,15 @@ static void udp_ep0_handler(void) udp_ep0_send_stall(pUDP); break; case STD_SET_ADDRESS: - DEBUGP("SET_ADDRESS "); + DEBUGE("SET_ADDRESS "); udp_ep0_send_zlp(pUDP); pUDP->UDP_FADDR = (AT91C_UDP_FEN | wValue); pUDP->UDP_GLBSTATE = (wValue) ? AT91C_UDP_FADDEN : 0; break; case STD_SET_CONFIGURATION: - DEBUGP("SET_CONFIG "); + DEBUGE("SET_CONFIG "); if (wValue) - DEBUGP("VALUE!=0 "); + DEBUGE("VALUE!=0 "); upcd.cur_config = wValue; udp_ep0_send_zlp(pUDP); pUDP->UDP_GLBSTATE = @@ -558,22 +570,22 @@ static void udp_ep0_handler(void) AT91C_UDP_EPINT2|AT91C_UDP_EPINT3); break; case STD_GET_CONFIGURATION: - DEBUGP("GET_CONFIG "); + DEBUGE("GET_CONFIG "); udp_ep0_send_data(pUDP, (char *)&(upcd.cur_config), sizeof(upcd.cur_config)); break; case STD_GET_STATUS_ZERO: - DEBUGP("GET_STATUS_ZERO "); + DEBUGE("GET_STATUS_ZERO "); wStatus = 0; udp_ep0_send_data(pUDP, (char *)&wStatus, sizeof(wStatus)); break; case STD_GET_STATUS_INTERFACE: - DEBUGP("GET_STATUS_INTERFACE "); + DEBUGE("GET_STATUS_INTERFACE "); wStatus = 0; udp_ep0_send_data(pUDP, (char *)&wStatus, sizeof(wStatus)); break; case STD_GET_STATUS_ENDPOINT: - DEBUGP("GET_STATUS_ENDPOINT(EPidx=%u) ", wIndex&0x0f); + DEBUGE("GET_STATUS_ENDPOINT(EPidx=%u) ", wIndex&0x0f); wStatus = 0; wIndex &= 0x0F; if ((pUDP->UDP_GLBSTATE & AT91C_UDP_CONFG) && (wIndex <= 3)) { @@ -591,15 +603,15 @@ static void udp_ep0_handler(void) udp_ep0_send_stall(pUDP); break; case STD_SET_FEATURE_ZERO: - DEBUGP("SET_FEATURE_ZERO "); + DEBUGE("SET_FEATURE_ZERO "); udp_ep0_send_stall(pUDP); break; case STD_SET_FEATURE_INTERFACE: - DEBUGP("SET_FEATURE_INTERFACE "); + DEBUGE("SET_FEATURE_INTERFACE "); udp_ep0_send_zlp(pUDP); break; case STD_SET_FEATURE_ENDPOINT: - DEBUGP("SET_FEATURE_ENDPOINT "); + DEBUGE("SET_FEATURE_ENDPOINT "); udp_ep0_send_zlp(pUDP); wIndex &= 0x0F; if ((wValue == 0) && wIndex && (wIndex <= 3)) { @@ -609,7 +621,7 @@ static void udp_ep0_handler(void) udp_ep0_send_stall(pUDP); break; case STD_CLEAR_FEATURE_ZERO: - DEBUGP("CLEAR_FEATURE_ZERO "); + DEBUGE("CLEAR_FEATURE_ZERO "); udp_ep0_send_stall(pUDP); break; case STD_CLEAR_FEATURE_INTERFACE: @@ -617,7 +629,7 @@ static void udp_ep0_handler(void) udp_ep0_send_zlp(pUDP); break; case STD_CLEAR_FEATURE_ENDPOINT: - DEBUGP("CLEAR_FEATURE_ENDPOINT(EPidx=%u) ", wIndex & 0x0f); + DEBUGE("CLEAR_FEATURE_ENDPOINT(EPidx=%u) ", wIndex & 0x0f); wIndex &= 0x0F; if ((wValue == 0) && wIndex && (wIndex <= 3)) { struct req_ctx *rctx; @@ -657,11 +669,11 @@ static void udp_ep0_handler(void) udp_ep0_send_stall(pUDP); break; case STD_SET_INTERFACE: - DEBUGP("SET INTERFACE "); + DEBUGE("SET INTERFACE "); udp_ep0_send_stall(pUDP); break; default: - DEBUGP("DEFAULT(req=0x%02x, type=0x%02x) ", bRequest, bmRequestType); + DEBUGE("DEFAULT(req=0x%02x, type=0x%02x) ", bRequest, bmRequestType); udp_ep0_send_stall(pUDP); break; } -- cgit v1.2.3