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Merge pull request #389 from hathach/fix-samg

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Fix SAMG
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Ha Thach 2020-05-02 18:47:27 +07:00 committed by GitHub
commit d1141c2d9d
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2 changed files with 71 additions and 73 deletions
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20
examples/device/net_lwip_webserver/src/usb_descriptors.c
View File

@ -103,9 +103,21 @@ uint8_t const * tud_descriptor_device_cb(void)
#if CFG_TUSB_MCU == OPT_MCU_LPC175X_6X || CFG_TUSB_MCU == OPT_MCU_LPC177X_8X || CFG_TUSB_MCU == OPT_MCU_LPC40XX
// LPC 17xx and 40xx endpoint type (bulk/interrupt/iso) are fixed by its number
// 0 control, 1 In, 2 Bulk, 3 Iso, 4 In etc ...
#define EPNUM_CDC 2
#define EPNUM_NET_NOTIF 0x81
#define EPNUM_NET_OUT 0x02
#define EPNUM_NET_IN 0x82
#elif CFG_TUSB_MCU == OPT_MCU_SAMG
// SAMG doesn't support a same endpoint number with different direction IN and OUT
// e.g EP1 OUT & EP1 IN cannot exist together
#define EPNUM_NET_NOTIF 0x81
#define EPNUM_NET_OUT 0x02
#define EPNUM_NET_IN 0x83
#else
#define EPNUM_CDC 2
#define EPNUM_NET_NOTIF 0x81
#define EPNUM_NET_OUT 0x02
#define EPNUM_NET_IN 0x82
#endif
static uint8_t const rndis_configuration[] =
@ -114,7 +126,7 @@ static uint8_t const rndis_configuration[] =
TUD_CONFIG_DESCRIPTOR(CONFIG_ID_RNDIS+1, ITF_NUM_TOTAL, 0, MAIN_CONFIG_TOTAL_LEN, 0, 100),
// Interface number, string index, EP notification address and size, EP data address (out, in) and size.
TUD_RNDIS_DESCRIPTOR(ITF_NUM_CDC, STRID_INTERFACE, 0x81, 8, EPNUM_CDC, 0x80 | EPNUM_CDC, CFG_TUD_NET_ENDPOINT_SIZE),
TUD_RNDIS_DESCRIPTOR(ITF_NUM_CDC, STRID_INTERFACE, EPNUM_NET_NOTIF, 8, EPNUM_NET_OUT, EPNUM_NET_IN, CFG_TUD_NET_ENDPOINT_SIZE),
};
static uint8_t const ecm_configuration[] =
@ -123,7 +135,7 @@ static uint8_t const ecm_configuration[] =
TUD_CONFIG_DESCRIPTOR(CONFIG_ID_ECM+1, ITF_NUM_TOTAL, 0, ALT_CONFIG_TOTAL_LEN, 0, 100),
// Interface number, description string index, MAC address string index, EP notification address and size, EP data address (out, in), and size, max segment size.
TUD_CDC_ECM_DESCRIPTOR(ITF_NUM_CDC, STRID_INTERFACE, STRID_MAC, 0x81, 64, EPNUM_CDC, 0x80 | EPNUM_CDC, CFG_TUD_NET_ENDPOINT_SIZE, CFG_TUD_NET_MTU),
TUD_CDC_ECM_DESCRIPTOR(ITF_NUM_CDC, STRID_INTERFACE, STRID_MAC, EPNUM_NET_NOTIF, 64, EPNUM_NET_OUT, EPNUM_NET_IN, CFG_TUD_NET_ENDPOINT_SIZE, CFG_TUD_NET_MTU),
};
// Configuration array: RNDIS and CDC-ECM

124
src/portable/microchip/samg/dcd_samg.c
View File

@ -51,12 +51,6 @@ typedef struct
// Endpoint 0-5, each can only be either OUT or In
xfer_desc_t _dcd_xfer[EP_COUNT];
// Indicate that DATA Toggle for Control Status is incorrect, which must always be DATA1 by USB Specs.
// However SAMG DToggle is read-only, therefore we must duplicate the status phase ( D0 then D1 )
// as walk-around to resolve this. The D0 status packet is likely to be discarded by USB Host safely.
// Note: Only needed for IN Status e.g CDC_SET_LINE_CODING, since out data is sent by host
volatile bool _walkaround_incorrect_dtoggle_control_status;
void xfer_epsize_set(xfer_desc_t* xfer, uint16_t epsize)
{
xfer->epsize = epsize;
@ -110,6 +104,32 @@ static void xact_ep_read(uint8_t epnum, uint8_t* buffer, uint16_t xact_len)
}
}
//! Bitmap for all status bits in CSR that are not affected by a value 1.
#define CSR_NO_EFFECT_1_ALL (UDP_CSR_RX_DATA_BK0 | UDP_CSR_RX_DATA_BK1 | UDP_CSR_STALLSENT | UDP_CSR_RXSETUP | UDP_CSR_TXCOMP)
// Per Specs: CSR need synchronization each write
static inline void csr_write(uint8_t epnum, uint32_t value)
{
uint32_t const csr = value;
UDP->UDP_CSR[epnum] = csr;
volatile uint32_t nop_count;
for (nop_count = 0; nop_count < 20; nop_count ++) __NOP();
}
// Per Specs: CSR need synchronization each write
static inline void csr_set(uint8_t epnum, uint32_t mask)
{
csr_write(epnum, UDP->UDP_CSR[epnum] | CSR_NO_EFFECT_1_ALL | mask);
}
// Per Specs: CSR need synchronization each write
static inline void csr_clear(uint8_t epnum, uint32_t mask)
{
csr_write(epnum, (UDP->UDP_CSR[epnum] | CSR_NO_EFFECT_1_ALL) & ~mask);
}
/*------------------------------------------------------------------*/
/* Device API
*------------------------------------------------------------------*/
@ -117,13 +137,12 @@ static void xact_ep_read(uint8_t epnum, uint8_t* buffer, uint16_t xact_len)
// Set up endpoint 0, clear all other endpoints
static void bus_reset(void)
{
_walkaround_incorrect_dtoggle_control_status = false;
tu_memclr(_dcd_xfer, sizeof(_dcd_xfer));
xfer_epsize_set(&_dcd_xfer[0], CFG_TUD_ENDPOINT0_SIZE);
// Enable EP0 control
UDP->UDP_CSR[0] = UDP_CSR_EPEDS_Msk;
csr_write(0, UDP_CSR_EPEDS_Msk);
// Enable interrupt : EP0, Suspend, Resume, Wakeup
UDP->UDP_IER = UDP_IER_EP0INT_Msk | UDP_IER_RXSUSP_Msk | UDP_IER_RXRSM_Msk | UDP_IER_WAKEUP_Msk;
@ -189,7 +208,6 @@ void dcd_disconnect(uint8_t rhport)
UDP->UDP_TXVC = UDP_TXVC_TXVDIS_Msk;
}
//--------------------------------------------------------------------+
// Endpoint API
//--------------------------------------------------------------------+
@ -240,8 +258,8 @@ bool dcd_edpt_open (uint8_t rhport, tusb_desc_endpoint_t const * ep_desc)
xfer_epsize_set(&_dcd_xfer[epnum], ep_desc->wMaxPacketSize.size);
// Configure type and eanble EP
UDP->UDP_CSR[epnum] = UDP_CSR_EPEDS_Msk | UDP_CSR_EPTYPE(ep_desc->bmAttributes.xfer + 4*dir);
// Configure type and enable EP
csr_write(epnum, UDP_CSR_EPEDS_Msk | UDP_CSR_EPTYPE(ep_desc->bmAttributes.xfer + 4*dir));
// Enable EP Interrupt for IN
if (dir == TUSB_DIR_IN) UDP->UDP_IER |= (1 << epnum);
@ -262,47 +280,15 @@ bool dcd_edpt_xfer (uint8_t rhport, uint8_t ep_addr, uint8_t * buffer, uint16_t
if (dir == TUSB_DIR_OUT)
{
// Clear EP0 direction bit
if (epnum == 0) UDP->UDP_CSR[epnum] &= ~UDP_CSR_DIR_Msk;
// Enable interrupt when starting OUT transfer
if (epnum != 0) UDP->UDP_IER |= (1 << epnum);
}
else
{
if (epnum == 0)
{
// Previous EP0 direction is OUT --> This transfer is ZLP control status.
if ( !(UDP->UDP_CSR[epnum] & UDP_CSR_DIR_Msk) )
{
// Set EP0 dir bit
UDP->UDP_CSR[epnum] |= UDP_CSR_DIR_Msk;
// DATA Toggle is 0, USB Specs requires Status Stage must be DATA1
// Since SAMG DToggle is read-only, we mark this and implement the walk-around
if ( !(UDP->UDP_CSR[epnum] & UDP_CSR_DTGLE_Msk) )
{
TU_LOG2("Incorrect DATA TOGGLE, Control Status must be DATA1\n");
// DTGLE is read-only on SAMG, this statement has no effect
UDP->UDP_CSR[epnum] |= UDP_CSR_DTGLE_Msk;
// WALKROUND: duplicate IN transfer to send DATA1 status packet
// set flag for irq to skip reporting first incorrect packet
_walkaround_incorrect_dtoggle_control_status = true;
UDP->UDP_CSR[epnum] |= UDP_CSR_TXPKTRDY_Msk;
while ( UDP->UDP_CSR[epnum] & UDP_CSR_TXPKTRDY_Msk ) {}
_walkaround_incorrect_dtoggle_control_status = false;
}
}
}
xact_ep_write(epnum, xfer->buffer, xfer_packet_len(xfer));
// TX ready for transfer
UDP->UDP_CSR[epnum] |= UDP_CSR_TXPKTRDY_Msk;
csr_set(epnum, UDP_CSR_TXPKTRDY_Msk);
}
return true;
@ -313,10 +299,14 @@ void dcd_edpt_stall (uint8_t rhport, uint8_t ep_addr)
{
(void) rhport;
// For EP0 USBD will stall both EP0 Out and In with 0x00 and 0x80
// only handle one by skipping 0x80
if ( ep_addr == tu_edpt_addr(0, TUSB_DIR_IN_MASK) ) return;
uint8_t const epnum = tu_edpt_number(ep_addr);
// Set force stall bit
UDP->UDP_CSR[epnum] |= UDP_CSR_FORCESTALL_Msk;
csr_set(epnum, UDP_CSR_FORCESTALL_Msk);
}
// clear stall, data toggle is also reset to DATA0
@ -327,11 +317,11 @@ void dcd_edpt_clear_stall (uint8_t rhport, uint8_t ep_addr)
uint8_t const epnum = tu_edpt_number(ep_addr);
// clear stall
UDP->UDP_CSR[epnum] &= ~UDP_CSR_FORCESTALL_Msk;
csr_clear(epnum, UDP_CSR_FORCESTALL_Msk);
// must also reset EP to clear data toggle
UDP->UDP_RST_EP = tu_bit_set(UDP->UDP_RST_EP, epnum);
UDP->UDP_RST_EP = tu_bit_clear(UDP->UDP_RST_EP, epnum);
UDP->UDP_RST_EP |= (1 << epnum);
UDP->UDP_RST_EP &= ~(1 << epnum);
}
//--------------------------------------------------------------------+
@ -369,7 +359,7 @@ void dcd_int_handler(uint8_t rhport)
if ( intr_status & TU_BIT(0) )
{
// setup packet
if (UDP->UDP_CSR[0] & UDP_CSR_RXSETUP)
if ( UDP->UDP_CSR[0] & UDP_CSR_RXSETUP )
{
// get setup from FIFO
uint8_t setup[8];
@ -382,18 +372,18 @@ void dcd_int_handler(uint8_t rhport)
dcd_event_setup_received(rhport, setup, true);
// Set EP direction bit according to DATA stage
if (setup[0] & 0x80)
// MUST only be set before RXSETUP is clear per specs
if ( tu_edpt_dir(setup[0]) )
{
UDP->UDP_CSR[0] |= UDP_CSR_DIR_Msk;
}else
csr_set(0, UDP_CSR_DIR_Msk);
}
else
{
UDP->UDP_CSR[0] &= ~UDP_CSR_DIR_Msk;
csr_clear(0, UDP_CSR_DIR_Msk);
}
// Clear Setup bit & stall bit if needed
UDP->UDP_CSR[0] &= ~(UDP_CSR_RXSETUP_Msk | UDP_CSR_FORCESTALL_Msk);
return;
// Clear Setup, stall and other on-going transfer bits
csr_clear(0, UDP_CSR_RXSETUP_Msk | UDP_CSR_TXPKTRDY_Msk | UDP_CSR_TXCOMP_Msk | UDP_CSR_RX_DATA_BK0 | UDP_CSR_RX_DATA_BK1 | UDP_CSR_STALLSENT_Msk | UDP_CSR_FORCESTALL_Msk);
}
}
@ -416,22 +406,18 @@ void dcd_int_handler(uint8_t rhport)
xact_ep_write(epnum, xfer->buffer, xact_len);
// TX ready for transfer
UDP->UDP_CSR[epnum] |= UDP_CSR_TXPKTRDY_Msk;
csr_set(epnum, UDP_CSR_TXPKTRDY_Msk);
}else
{
// WALKAROUND: Skip reporting this incorrect DATA Toggle status IN transfer
if ( !(_walkaround_incorrect_dtoggle_control_status && (epnum == 0) && (xfer->actual_len == 0)) )
{
// xfer is complete
dcd_event_xfer_complete(rhport, epnum | TUSB_DIR_IN_MASK, xfer->actual_len, XFER_RESULT_SUCCESS, true);
// xfer is complete
dcd_event_xfer_complete(rhport, epnum | TUSB_DIR_IN_MASK, xfer->actual_len, XFER_RESULT_SUCCESS, true);
// Required since control OUT can happen right after before stack handle this event
xfer_end(xfer);
}
// Required since control OUT can happen right after before stack handle this event
xfer_end(xfer);
}
// Clear TX Complete bit
UDP->UDP_CSR[epnum] &= ~UDP_CSR_TXCOMP_Msk;
csr_clear(epnum, UDP_CSR_TXCOMP_Msk);
}
//------------- Endpoint OUT -------------//
@ -456,13 +442,13 @@ void dcd_int_handler(uint8_t rhport)
}
// Clear DATA Bank0/1 bit
UDP->UDP_CSR[epnum] &= ~banks_complete;
csr_clear(epnum, banks_complete);
}
// Stall sent to host
if (UDP->UDP_CSR[epnum] & UDP_CSR_STALLSENT_Msk)
{
UDP->UDP_CSR[epnum] &= ~UDP_CSR_STALLSENT_Msk;
csr_clear(epnum, UDP_CSR_STALLSENT_Msk);
}
}
}