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Exported ecrt_domain_size() for userspace.

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This commit is contained in:
Florian Pose
2013-02-05 15:24:45 +01:00
parent f3b7c8f236
commit 23c725a79c
4 changed files with 77 additions and 26 deletions
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6
include/ecrt.h
View File

@@ -1519,16 +1519,16 @@ int ecrt_domain_reg_pdo_entry_list(
registrations. */
);
#ifdef __KERNEL__
/** Returns the current size of the domain's process data.
*
* \return Size of the process data image.
* \return Size of the process data image, or a negative error code.
*/
size_t ecrt_domain_size(
const ec_domain_t *domain /**< Domain. */
);
#ifdef __KERNEL__
/** Provide external memory to store the domain's process data.
*
* Call this after all PDO entries have been registered and before activating

15
lib/domain.c
View File

@@ -76,6 +76,21 @@ int ecrt_domain_reg_pdo_entry_list(ec_domain_t *domain,
/*****************************************************************************/
size_t ecrt_domain_size(const ec_domain_t *domain)
{
int ret;
ret = ioctl(domain->master->fd, EC_IOCTL_DOMAIN_SIZE, domain->index);
if (EC_IOCTL_IS_ERROR(ret)) {
fprintf(stderr, "Failed to get domain size: %s\n",
strerror(EC_IOCTL_ERRNO(ret)));
}
return ret;
}
/*****************************************************************************/
uint8_t *ecrt_domain_data(ec_domain_t *domain)
{
if (!domain->process_data) {

35
master/ioctl.c
View File

@@ -2730,6 +2730,38 @@ static ATTRIBUTES int ec_ioctl_sc_idn(
/*****************************************************************************/
/** Gets the domain's data size.
*/
static ATTRIBUTES int ec_ioctl_domain_size(
ec_master_t *master, /**< EtherCAT master. */
void *arg, /**< ioctl() argument. */
ec_ioctl_context_t *ctx /**< Private data structure of file handle. */
)
{
const ec_domain_t *domain;
if (unlikely(!ctx->requested)) {
return -EPERM;
}
if (down_interruptible(&master->master_sem)) {
return -EINTR;
}
list_for_each_entry(domain, &master->domains, list) {
if (domain->index == (unsigned long) arg) {
size_t size = ecrt_domain_size(domain);
up(&master->master_sem);
return size;
}
}
up(&master->master_sem);
return -ENOENT;
}
/*****************************************************************************/
/** Gets the domain's offset in the total process data.
*/
static ATTRIBUTES int ec_ioctl_domain_offset(
@@ -4186,6 +4218,9 @@ long EC_IOCTL(ec_master_t *master, ec_ioctl_context_t *ctx,
}
ret = ec_ioctl_sc_idn(master, arg, ctx);
break;
case EC_IOCTL_DOMAIN_SIZE:
ret = ec_ioctl_domain_size(master, arg, ctx);
break;
case EC_IOCTL_DOMAIN_OFFSET:
ret = ec_ioctl_domain_offset(master, arg, ctx);
break;

47
master/ioctl.h
View File

@@ -56,7 +56,7 @@
*
* Increment this when changing the ioctl interface!
*/
#define EC_IOCTL_VERSION_MAGIC 25
#define EC_IOCTL_VERSION_MAGIC 26
// Command-line tool
#define EC_IOCTL_MODULE EC_IOR(0x00, ec_ioctl_module_t)
@@ -128,28 +128,29 @@
#define EC_IOCTL_SC_VOE EC_IOWR(0x3e, ec_ioctl_voe_t)
#define EC_IOCTL_SC_STATE EC_IOWR(0x3f, ec_ioctl_sc_state_t)
#define EC_IOCTL_SC_IDN EC_IOW(0x40, ec_ioctl_sc_idn_t)
#define EC_IOCTL_DOMAIN_OFFSET EC_IO(0x41)
#define EC_IOCTL_DOMAIN_PROCESS EC_IO(0x42)
#define EC_IOCTL_DOMAIN_QUEUE EC_IO(0x43)
#define EC_IOCTL_DOMAIN_STATE EC_IOWR(0x44, ec_ioctl_domain_state_t)
#define EC_IOCTL_SDO_REQUEST_INDEX EC_IOWR(0x45, ec_ioctl_sdo_request_t)
#define EC_IOCTL_SDO_REQUEST_TIMEOUT EC_IOWR(0x46, ec_ioctl_sdo_request_t)
#define EC_IOCTL_SDO_REQUEST_STATE EC_IOWR(0x47, ec_ioctl_sdo_request_t)
#define EC_IOCTL_SDO_REQUEST_READ EC_IOWR(0x48, ec_ioctl_sdo_request_t)
#define EC_IOCTL_SDO_REQUEST_WRITE EC_IOWR(0x49, ec_ioctl_sdo_request_t)
#define EC_IOCTL_SDO_REQUEST_DATA EC_IOWR(0x4a, ec_ioctl_sdo_request_t)
#define EC_IOCTL_REG_REQUEST_DATA EC_IOWR(0x4b, ec_ioctl_reg_request_t)
#define EC_IOCTL_REG_REQUEST_STATE EC_IOWR(0x4c, ec_ioctl_reg_request_t)
#define EC_IOCTL_REG_REQUEST_WRITE EC_IOWR(0x4d, ec_ioctl_reg_request_t)
#define EC_IOCTL_REG_REQUEST_READ EC_IOWR(0x4e, ec_ioctl_reg_request_t)
#define EC_IOCTL_VOE_SEND_HEADER EC_IOW(0x4f, ec_ioctl_voe_t)
#define EC_IOCTL_VOE_REC_HEADER EC_IOWR(0x50, ec_ioctl_voe_t)
#define EC_IOCTL_VOE_READ EC_IOW(0x51, ec_ioctl_voe_t)
#define EC_IOCTL_VOE_READ_NOSYNC EC_IOW(0x52, ec_ioctl_voe_t)
#define EC_IOCTL_VOE_WRITE EC_IOWR(0x53, ec_ioctl_voe_t)
#define EC_IOCTL_VOE_EXEC EC_IOWR(0x54, ec_ioctl_voe_t)
#define EC_IOCTL_VOE_DATA EC_IOWR(0x55, ec_ioctl_voe_t)
#define EC_IOCTL_SET_SEND_INTERVAL EC_IOW(0x56, size_t)
#define EC_IOCTL_DOMAIN_SIZE EC_IO(0x41)
#define EC_IOCTL_DOMAIN_OFFSET EC_IO(0x42)
#define EC_IOCTL_DOMAIN_PROCESS EC_IO(0x43)
#define EC_IOCTL_DOMAIN_QUEUE EC_IO(0x44)
#define EC_IOCTL_DOMAIN_STATE EC_IOWR(0x45, ec_ioctl_domain_state_t)
#define EC_IOCTL_SDO_REQUEST_INDEX EC_IOWR(0x46, ec_ioctl_sdo_request_t)
#define EC_IOCTL_SDO_REQUEST_TIMEOUT EC_IOWR(0x47, ec_ioctl_sdo_request_t)
#define EC_IOCTL_SDO_REQUEST_STATE EC_IOWR(0x48, ec_ioctl_sdo_request_t)
#define EC_IOCTL_SDO_REQUEST_READ EC_IOWR(0x49, ec_ioctl_sdo_request_t)
#define EC_IOCTL_SDO_REQUEST_WRITE EC_IOWR(0x4a, ec_ioctl_sdo_request_t)
#define EC_IOCTL_SDO_REQUEST_DATA EC_IOWR(0x4b, ec_ioctl_sdo_request_t)
#define EC_IOCTL_REG_REQUEST_DATA EC_IOWR(0x4c, ec_ioctl_reg_request_t)
#define EC_IOCTL_REG_REQUEST_STATE EC_IOWR(0x4d, ec_ioctl_reg_request_t)
#define EC_IOCTL_REG_REQUEST_WRITE EC_IOWR(0x4e, ec_ioctl_reg_request_t)
#define EC_IOCTL_REG_REQUEST_READ EC_IOWR(0x4f, ec_ioctl_reg_request_t)
#define EC_IOCTL_VOE_SEND_HEADER EC_IOW(0x50, ec_ioctl_voe_t)
#define EC_IOCTL_VOE_REC_HEADER EC_IOWR(0x51, ec_ioctl_voe_t)
#define EC_IOCTL_VOE_READ EC_IOW(0x52, ec_ioctl_voe_t)
#define EC_IOCTL_VOE_READ_NOSYNC EC_IOW(0x53, ec_ioctl_voe_t)
#define EC_IOCTL_VOE_WRITE EC_IOWR(0x54, ec_ioctl_voe_t)
#define EC_IOCTL_VOE_EXEC EC_IOWR(0x55, ec_ioctl_voe_t)
#define EC_IOCTL_VOE_DATA EC_IOWR(0x56, ec_ioctl_voe_t)
#define EC_IOCTL_SET_SEND_INTERVAL EC_IOW(0x57, size_t)
/*****************************************************************************/