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git-svn-id: svn://svn.code.sf.net/p/chibios/svn/trunk@3287 35acf78f-673a-0410-8e92-d51de3d6d3f4

master
gdisirio 2011-09-03 12:35:41 +00:00
parent 08dad7b1f5
commit 792d85bcb5
6 changed files with 208 additions and 56 deletions
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3
demos/ARM7-AT91SAM7X-LWIP-GCC/lwip/lwipthread.c
View File

@ -222,6 +222,7 @@ msg_t lwip_thread(void *p) {
EventListener el0, el1;
struct ip_addr ip, gateway, netmask;
static struct netif thisif;
static const MACConfig mac_config = {thisif.hwaddr};
/* Initializes the thing.*/
sys_init();
@ -254,7 +255,7 @@ msg_t lwip_thread(void *p) {
LWIP_GATEWAY(&gateway);
LWIP_NETMASK(&netmask);
}
macSetAddress(&ETH1, thisif.hwaddr);
macStart(&ETH1, &mac_config);
netif_add(&thisif, &ip, &netmask, &gateway, NULL, ethernetif_init, tcpip_input);
netif_set_default(&thisif);

36
os/hal/include/mac.h
View File

@ -38,18 +38,48 @@
/* Driver pre-compile time settings. */
/*===========================================================================*/
/**
* @name MAC configuration options
* @{
*/
/**
* @brief Enables an event sources for incoming packets.
*/
#if !defined(MAC_USE_EVENTS) || defined(__DOXYGEN__)
#define MAC_USE_EVENTS TRUE
#endif
/** @} */
/*===========================================================================*/
/* Derived constants and error checks. */
/*===========================================================================*/
#if !CH_USE_SEMAPHORES || !CH_USE_EVENTS
#error "the MAC driver requires CH_USE_SEMAPHORES and CH_USE_EVENTS"
#error "the MAC driver requires CH_USE_SEMAPHORES"
#endif
#if MAC_USE_EVENTS && !CH_USE_EVENTS
#error "the MAC driver requires CH_USE_EVENTS"
#endif
/*===========================================================================*/
/* Driver data structures and types. */
/*===========================================================================*/
/**
* @brief Driver state machine possible states.
*/
typedef enum {
MAC_UNINIT = 0, /**< Not initialized. */
MAC_STOP = 1, /**< Stopped. */
MAC_ACTIVE = 2, /**< Active. */
} macstate_t;
/**
* @brief Type of a structure representing a MAC driver.
*/
typedef struct MACDriver MACDriver;
#include "mac_lld.h"
/*===========================================================================*/
@ -68,7 +98,7 @@
*
* @api
*/
#if CH_USE_EVENTS || defined(__DOXYGEN__)
#if MAC_USE_EVENTS || defined(__DOXYGEN__)
#define macGetReceiveEventSource(macp) (&(macp)->rdevent)
#endif
@ -113,6 +143,8 @@ extern "C" {
#endif
void macInit(void);
void macObjectInit(MACDriver *macp);
void macStart(MACDriver *macp, const MACConfig *config);
void macStop(MACDriver *macp);
void macSetAddress(MACDriver *macp, const uint8_t *p);
msg_t macWaitTransmitDescriptor(MACDriver *macp,
MACTransmitDescriptor *tdp,

74
os/hal/platforms/AT91SAM7/mac_lld.c
View File

@ -64,7 +64,6 @@ MACDriver ETH1;
/*===========================================================================*/
#ifndef __DOXYGEN__
static bool_t link_up;
static uint8_t default_mac[] = {0xAA, 0x55, 0x13, 0x37, 0x01, 0x10};
@ -102,7 +101,7 @@ static void serve_interrupt(void) {
if (rsr & AT91C_EMAC_REC) {
chSysLockFromIsr();
chSemResetI(&ETH1.rdsem, 0);
#if CH_USE_EVENTS
#if MAC_USE_EVENTS
chEvtBroadcastI(&ETH1.rdevent);
#endif
chSysUnlockFromIsr();
@ -135,6 +134,19 @@ static void cleanup(EMACDescriptor *from) {
}
}
/**
* @brief MAC address setup.
*
* @param[in] p pointer to a six bytes buffer containing the MAC
* address
*/
static void set_address(const uint8_t *p) {
AT91C_BASE_EMAC->EMAC_SA1L = (AT91_REG)((p[3] << 24) | (p[2] << 16) |
(p[1] << 8) | p[0]);
AT91C_BASE_EMAC->EMAC_SA1H = (AT91_REG)((p[5] << 8) | p[4]);
}
/*===========================================================================*/
/* Driver interrupt handlers. */
/*===========================================================================*/
@ -163,11 +175,34 @@ CH_IRQ_HANDLER(irq_handler) {
* @notapi
*/
void mac_lld_init(void) {
unsigned i;
miiInit();
macObjectInit(&ETH1);
/*
* Associated PHY initialization.
*/
miiReset(&ETH1);
/*
* EMAC pins setup. Note, PB18 is not included because it is
* used as #PD control and not as EF100.
*/
AT91C_BASE_PIOB->PIO_ASR = EMAC_PIN_MASK;
AT91C_BASE_PIOB->PIO_PDR = EMAC_PIN_MASK;
AT91C_BASE_PIOB->PIO_PPUDR = EMAC_PIN_MASK;
}
/**
* @brief Configures and activates the MAC peripheral.
*
* @param[in] macp pointer to the @p MACDriver object
*
* @notapi
*/
void mac_lld_start(MACDriver *macp) {
unsigned i;
/*
* Buffers initialization.
*/
@ -185,18 +220,9 @@ void mac_lld_init(void) {
txptr = td;
/*
* Associated PHY initialization.
*/
miiReset(&ETH1);
/*
* EMAC pins setup and clock enable. Note, PB18 is not included because it is
* used as #PD control and not as EF100.
* EMAC clock enable.
*/
AT91C_BASE_PMC->PMC_PCER = 1 << AT91C_ID_EMAC;
AT91C_BASE_PIOB->PIO_ASR = EMAC_PIN_MASK;
AT91C_BASE_PIOB->PIO_PDR = EMAC_PIN_MASK;
AT91C_BASE_PIOB->PIO_PPUDR = EMAC_PIN_MASK;
/*
* EMAC Initial setup.
@ -213,7 +239,10 @@ void mac_lld_init(void) {
AT91C_BASE_EMAC->EMAC_NCR |= AT91C_EMAC_TE |
AT91C_EMAC_RE |
AT91C_EMAC_CLRSTAT;/* Initial NCR settings.*/
mac_lld_set_address(&ETH1, default_mac);
if (macp->config->mac_address == NULL)
set_address(default_mac);
else
set_address(macp->config->mac_address);
/*
* PHY device identification.
@ -235,22 +264,15 @@ void mac_lld_init(void) {
}
/**
* @brief Low level MAC address setup.
* @brief Deactivates the MAC peripheral.
*
* @param[in] macp pointer to the @p MACDriver object
* @param[in] p pointer to a six bytes buffer containing the MAC
* address. If this parameter is set to @p NULL then
* a system default MAC is used. The MAC address must
* be aligned with the most significant byte first.
*
* @notapi
*/
void mac_lld_set_address(MACDriver *macp, const uint8_t *p) {
void mac_lld_stop(MACDriver *macp) {
(void)macp;
AT91C_BASE_EMAC->EMAC_SA1L = (AT91_REG)((p[3] << 24) | (p[2] << 16) |
(p[1] << 8) | p[0]);
AT91C_BASE_EMAC->EMAC_SA1H = (AT91_REG)((p[5] << 8) | p[4]);
}
/**
@ -272,7 +294,7 @@ msg_t max_lld_get_transmit_descriptor(MACDriver *macp,
(void)macp;
if (!link_up)
if (!macp->link_up)
return RDY_TIMEOUT;
chSysLock();
@ -505,7 +527,7 @@ bool_t mac_lld_poll_link_status(MACDriver *macp) {
bmsr = miiGet(macp, MII_BMSR);
if (!(bmsr & BMSR_LSTATUS)) {
AT91C_BASE_EMAC->EMAC_NCR &= ~AT91C_EMAC_MPE;
return link_up = FALSE;
return macp->link_up = FALSE;
}
ncfgr = AT91C_BASE_EMAC->EMAC_NCFGR & ~(AT91C_EMAC_SPD | AT91C_EMAC_FD);
@ -525,7 +547,7 @@ bool_t mac_lld_poll_link_status(MACDriver *macp) {
}
AT91C_BASE_EMAC->EMAC_NCFGR = ncfgr;
AT91C_BASE_EMAC->EMAC_NCR &= ~AT91C_EMAC_MPE;
return link_up = TRUE;
return macp->link_up = TRUE;
}
#endif /* HAL_USE_MAC */

80
os/hal/platforms/AT91SAM7/mac_lld.h
View File

@ -128,38 +128,85 @@ typedef struct {
} EMACDescriptor;
/**
* @brief Structure representing a MAC driver.
* @brief Driver configuration structure.
*/
typedef struct {
Semaphore tdsem; /**< Transmit semaphore. */
Semaphore rdsem; /**< Receive semaphore. */
#if CH_USE_EVENTS
EventSource rdevent; /**< Receive event source. */
/**
* @brief MAC address.
*/
uint8_t *mac_address;
/* End of the mandatory fields.*/
} MACConfig;
/**
* @brief Structure representing a MAC driver.
*/
struct MACDriver {
/**
* @brief Driver state.
*/
macstate_t state;
/**
* @brief Current configuration data.
*/
const MACConfig *config;
/**
* @brief Transmit semaphore.
*/
Semaphore tdsem;
/**
* @brief Receive semaphore.
*/
Semaphore rdsem;
#if MAC_USE_EVENTS || defined(__DOXYGEN__)
/**
* @brief Receive event.
*/
EventSource rdevent;
#endif
/* End of the mandatory fields.*/
} MACDriver;
/**
* @brief Link status flag.
*/
bool_t link_up;
};
/**
* @brief Structure representing a transmit descriptor.
*/
typedef struct {
size_t offset; /**< Current write offset. */
size_t size; /**< Available space size. */
/**
* @brief Current write offset.
*/
size_t offset;
/**
* @brief Available space size.
*/
size_t size;
/* End of the mandatory fields.*/
EMACDescriptor *physdesc; /**< Pointer to the physical
descriptor. */
/**
* @brief Pointer to the physical descriptor.
*/
EMACDescriptor *physdesc;
} MACTransmitDescriptor;
/**
* @brief Structure representing a receive descriptor.
*/
typedef struct {
size_t offset; /**< Current read offset. */
size_t size; /**< Available data size. */
/**
* @brief Current read offset.
*/
size_t offset;
/**
* @brief Available data size.
*/
size_t size;
/* End of the mandatory fields.*/
EMACDescriptor *physdesc; /**< Pointer to the first
descriptor of the buffers
chain. */
/**
* @brief Pointer to the first descriptor of the buffers chain.
*/
EMACDescriptor *physdesc;
} MACReceiveDescriptor;
/*===========================================================================*/
@ -178,7 +225,8 @@ extern MACDriver ETH1;
extern "C" {
#endif
void mac_lld_init(void);
void mac_lld_set_address(MACDriver *macp, const uint8_t *p);
void mac_lld_start(MACDriver *macp);
void mac_lld_stop(MACDriver *macp);
msg_t max_lld_get_transmit_descriptor(MACDriver *macp,
MACTransmitDescriptor *tdp);
size_t mac_lld_write_transmit_descriptor(MACTransmitDescriptor *tdp,

63
os/hal/src/mac.c
View File

@ -21,8 +21,6 @@
/**
* @file mac.c
* @brief MAC Driver code.
* @note This function is implicitly invoked by @p halInit(), there is
* no need to explicitly initialize the driver.
*
* @addtogroup MAC
* @{
@ -59,6 +57,8 @@
/**
* @brief MAC Driver initialization.
* @note This function is implicitly invoked by @p halInit(), there is
* no need to explicitly initialize the driver.
*
* @init
*/
@ -76,28 +76,53 @@ void macInit(void) {
*/
void macObjectInit(MACDriver *macp) {
macp->state = MAC_STOP;
macp->config = NULL;
chSemInit(&macp->tdsem, 0);
chSemInit(&macp->rdsem, 0);
#if CH_USE_EVENTS
#if MAC_USE_EVENTS
chEvtInit(&macp->rdevent);
#endif
}
/**
* @brief MAC address setup.
* @pre This function must be invoked with the driver in the stopped
* state. If invoked on an active interface then it is ignored.
* @brief Configures and activates the MAC peripheral.
*
* @param[in] macp pointer to the @p MACDriver object
* @param[in] p pointer to a six bytes buffer containing the MAC
* address. If this parameter is set to @p NULL then MAC
* a system default is used.
* @param[in] config pointer to the @p MACConfig object
*
* @api
*/
void macSetAddress(MACDriver *macp, const uint8_t *p) {
void macStart(MACDriver *macp, const MACConfig *config) {
mac_lld_set_address(macp, p);
chDbgCheck((macp != NULL) && (config != NULL), "macStart");
chSysLock();
chDbgAssert(macp->state == MAC_STOP,
"macStart(), #1", "invalid state");
macp->config = config;
mac_lld_start(macp);
macp->state = MAC_ACTIVE;
chSysUnlock();
}
/**
* @brief Deactivates the MAC peripheral.
*
* @param[in] macp pointer to the @p MACDriver object
*
* @api
*/
void macStop(MACDriver *macp) {
chDbgCheck(macp != NULL, "macStop");
chSysLock();
chDbgAssert((macp->state == MAC_STOP) || (macp->state == MAC_ACTIVE),
"macStop(), #1", "invalid state");
mac_lld_stop(macp);
macp->state = MAC_STOP;
chSysUnlock();
}
/**
@ -124,6 +149,10 @@ msg_t macWaitTransmitDescriptor(MACDriver *macp,
systime_t time) {
msg_t msg;
chDbgCheck((macp != NULL) && (tdp != NULL), "macWaitTransmitDescriptor");
chDbgAssert(macp->state == MAC_ACTIVE, "macWaitTransmitDescriptor(), #1",
"not active");
while (((msg = max_lld_get_transmit_descriptor(macp, tdp)) != RDY_OK) &&
(time > 0)) {
chSysLock();
@ -149,6 +178,8 @@ msg_t macWaitTransmitDescriptor(MACDriver *macp,
*/
void macReleaseTransmitDescriptor(MACTransmitDescriptor *tdp) {
chDbgCheck((tdp != NULL), "macReleaseTransmitDescriptor");
mac_lld_release_transmit_descriptor(tdp);
}
@ -176,6 +207,10 @@ msg_t macWaitReceiveDescriptor(MACDriver *macp,
systime_t time) {
msg_t msg;
chDbgCheck((macp != NULL) && (rdp != NULL), "macWaitReceiveDescriptor");
chDbgAssert(macp->state == MAC_ACTIVE, "macWaitReceiveDescriptor(), #1",
"not active");
while (((msg = max_lld_get_receive_descriptor(macp, rdp)) != RDY_OK) &&
(time > 0)) {
chSysLock();
@ -202,6 +237,8 @@ msg_t macWaitReceiveDescriptor(MACDriver *macp,
*/
void macReleaseReceiveDescriptor(MACReceiveDescriptor *rdp) {
chDbgCheck((rdp != NULL), "macReleaseReceiveDescriptor");
mac_lld_release_receive_descriptor(rdp);
}
@ -217,6 +254,10 @@ void macReleaseReceiveDescriptor(MACReceiveDescriptor *rdp) {
*/
bool_t macPollLinkStatus(MACDriver *macp) {
chDbgCheck((macp != NULL), "macPollLinkStatus");
chDbgAssert(macp->state == MAC_ACTIVE, "macPollLinkStatus(), #1",
"not active");
return mac_lld_poll_link_status(macp);
}

8
readme.txt
View File

@ -89,6 +89,14 @@
(backported to 2.2.4).
- FIX: Fixed timeout problem in the lwIP interface layer (bug 3302420)
(backported to 2.2.4).
- NEW: New I2C driver model and STM32 implementation.
(evaluate the option to change the API to a synchronous model)
- NEW: New RTC driver model and STM32 implementation.
(API and functionality review)
- NEW: Improved MAC driver model, it now follows the same template of other
drivers.
(uIP demo to be adapted)
(implement macStop() in AT91SAM7X implementation)
- NEW: New DMA helper driver for STM32, it simplifies the use of the DMA
resources and hides most differences with the new enhanced DMA units
found in the STM32F2xx sub-family.