diff options
Diffstat (limited to 'c/src/lib/libbsp/sparc/shared/1553/b1553rt.c')
| -rw-r--r-- | c/src/lib/libbsp/sparc/shared/1553/b1553rt.c | 856 |
1 files changed, 0 insertions, 856 deletions
diff --git a/c/src/lib/libbsp/sparc/shared/1553/b1553rt.c b/c/src/lib/libbsp/sparc/shared/1553/b1553rt.c deleted file mode 100644 index b076abdc5d..0000000000 --- a/c/src/lib/libbsp/sparc/shared/1553/b1553rt.c +++ /dev/null @@ -1,856 +0,0 @@ -/* - * B1553RT driver implmenetation - * - * COPYRIGHT (c) 2009. - * Cobham Gaisler AB. - * - * The license and distribution terms for this file may be - * found in the file LICENSE in this distribution or at - * http://www.rtems.org/license/LICENSE. - */ - -#include <bsp.h> -#include <rtems/libio.h> -#include <stdlib.h> -#include <stdio.h> -#include <string.h> -#include <assert.h> -#include <ctype.h> -#include <rtems/bspIo.h> - -#include <drvmgr/drvmgr.h> -#include <bsp/b1553rt.h> -#include <ambapp.h> -#include <drvmgr/ambapp_bus.h> - -/* Uncomment for debug output */ -/*#define DEBUG 1*/ - -/* - #define FUNCDEBUG 1*/ -/*#undef DEBUG*/ -#undef FUNCDEBUG - -/* EVENT_QUEUE_SIZE sets the size of the event queue - */ -#define EVENT_QUEUE_SIZE 1024 - - -#define INDEX(x) ( x&(EVENT_QUEUE_SIZE-1) ) - -#if 0 -#define DBG(x...) printk(x) -#else -#define DBG(x...) -#endif - -#ifdef FUNCDEBUG -#define FUNCDBG(x...) printk(x) -#else -#define FUNCDBG(x...) -#endif - -#define READ_DMA(address) _READ16((unsigned int)address) - -static __inline__ unsigned short _READ16(unsigned int addr) { - unsigned short tmp; - asm(" lduha [%1]1, %0 " - : "=r"(tmp) - : "r"(addr) - ); - return tmp; -} - -static rtems_device_driver rt_initialize(rtems_device_major_number major, rtems_device_minor_number minor, void *arg); -static rtems_device_driver rt_open(rtems_device_major_number major, rtems_device_minor_number minor, void *arg); -static rtems_device_driver rt_close(rtems_device_major_number major, rtems_device_minor_number minor, void *arg); -static rtems_device_driver rt_read(rtems_device_major_number major, rtems_device_minor_number minor, void *arg); -static rtems_device_driver rt_write(rtems_device_major_number major, rtems_device_minor_number minor, void *arg); -static rtems_device_driver rt_control(rtems_device_major_number major, rtems_device_minor_number minor, void *arg); - -#define RT_DRIVER_TABLE_ENTRY { rt_initialize, rt_open, rt_close, rt_read, rt_write, rt_control } - -static rtems_driver_address_table b1553rt_driver = RT_DRIVER_TABLE_ENTRY; - -typedef struct { - - struct drvmgr_dev *dev; /* Driver manager device */ - char devName[32]; /* Device Name */ - - struct rt_reg *regs; - unsigned int ctrl_copy; /* Local copy of config register */ - - unsigned int cfg_freq; - - unsigned int memarea_base; - unsigned int memarea_base_remote; - - volatile unsigned short *mem; - - /* Received events waiting to be read */ - struct rt_msg *rt_event; - unsigned int head, tail; - - int rx_blocking; - - rtems_id rx_sem, tx_sem, dev_sem; - int minor; - int irqno; - -#ifdef DEBUG - unsigned int log[EVENT_QUEUE_SIZE*4]; - unsigned int log_i; -#endif - - unsigned int status; - rtems_id event_id; /* event that may be signalled upon errors, needs to be set through ioctl command RT_SET_EVENTID */ - -} rt_priv; - -static void b1553rt_interrupt(void *arg); -static rtems_device_driver rt_init(rt_priv *rt); - -#define OFS(ofs) (((unsigned int)&ofs & 0x1ffff)>>1) - -static int b1553rt_driver_io_registered = 0; -static rtems_device_major_number b1553rt_driver_io_major = 0; - -/******************* Driver manager interface ***********************/ - -/* Driver prototypes */ -int b1553rt_register_io(rtems_device_major_number *m); -int b1553rt_device_init(rt_priv *pDev); - -int b1553rt_init2(struct drvmgr_dev *dev); -int b1553rt_init3(struct drvmgr_dev *dev); -int b1553rt_remove(struct drvmgr_dev *dev); - -struct drvmgr_drv_ops b1553rt_ops = -{ - .init = {NULL, b1553rt_init2, b1553rt_init3, NULL}, - .remove = b1553rt_remove, - .info = NULL -}; - -struct amba_dev_id b1553rt_ids[] = -{ - {VENDOR_GAISLER, GAISLER_B1553RT}, - {0, 0} /* Mark end of table */ -}; - -struct amba_drv_info b1553rt_drv_info = -{ - { - DRVMGR_OBJ_DRV, /* Driver */ - NULL, /* Next driver */ - NULL, /* Device list */ - DRIVER_AMBAPP_GAISLER_B1553RT_ID, /* Driver ID */ - "B1553RT_DRV", /* Driver Name */ - DRVMGR_BUS_TYPE_AMBAPP, /* Bus Type */ - &b1553rt_ops, - NULL, /* Funcs */ - 0, /* No devices yet */ - 0, - - }, - &b1553rt_ids[0] -}; - -void b1553rt_register_drv (void) -{ - DBG("Registering B1553RT driver\n"); - drvmgr_drv_register(&b1553rt_drv_info.general); -} - -int b1553rt_init2(struct drvmgr_dev *dev) -{ - rt_priv *priv; - - DBG("B1553RT[%d] on bus %s\n", dev->minor_drv, dev->parent->dev->name); - priv = dev->priv = malloc(sizeof(rt_priv)); - if ( !priv ) - return DRVMGR_NOMEM; - memset(priv, 0, sizeof(*priv)); - priv->dev = dev; - - /* This core will not find other cores, so we wait for init2() */ - - return DRVMGR_OK; -} - -int b1553rt_init3(struct drvmgr_dev *dev) -{ - rt_priv *priv; - char prefix[32]; - rtems_status_code status; - - priv = dev->priv; - - /* Do initialization */ - - if ( b1553rt_driver_io_registered == 0) { - /* Register the I/O driver only once for all cores */ - if ( b1553rt_register_io(&b1553rt_driver_io_major) ) { - /* Failed to register I/O driver */ - dev->priv = NULL; - return DRVMGR_FAIL; - } - - b1553rt_driver_io_registered = 1; - } - - /* I/O system registered and initialized - * Now we take care of device initialization. - */ - - if ( b1553rt_device_init(priv) ) { - return DRVMGR_FAIL; - } - - /* Get Filesystem name prefix */ - prefix[0] = '\0'; - if ( drvmgr_get_dev_prefix(dev, prefix) ) { - /* Failed to get prefix, make sure of a unique FS name - * by using the driver minor. - */ - sprintf(priv->devName, "/dev/b1553rt%d", dev->minor_drv); - } else { - /* Got special prefix, this means we have a bus prefix - * And we should use our "bus minor" - */ - sprintf(priv->devName, "/dev/%sb1553rt%d", prefix, dev->minor_bus); - } - - /* Register Device */ - status = rtems_io_register_name(priv->devName, b1553rt_driver_io_major, dev->minor_drv); - if (status != RTEMS_SUCCESSFUL) { - return DRVMGR_FAIL; - } - - return DRVMGR_OK; -} - -int b1553rt_remove(struct drvmgr_dev *dev) -{ - /* Stop more tasks to open driver */ - - /* Throw out all tasks using this driver */ - - /* Unregister I/O node */ - - /* Unregister and disable Interrupt */ - - /* Free device memory */ - - /* Return sucessfully */ - - return DRVMGR_FAIL; -} - -/******************* Driver Implementation ***********************/ - -int b1553rt_register_io(rtems_device_major_number *m) -{ - rtems_status_code r; - - if ((r = rtems_io_register_driver(0, &b1553rt_driver, m)) == RTEMS_SUCCESSFUL) { - DBG("B1553RT driver successfully registered, major: %d\n", *m); - } else { - switch(r) { - case RTEMS_TOO_MANY: - printk("B1553RT rtems_io_register_driver failed: RTEMS_TOO_MANY\n"); - return -1; - case RTEMS_INVALID_NUMBER: - printk("B1553RT rtems_io_register_driver failed: RTEMS_INVALID_NUMBER\n"); - return -1; - case RTEMS_RESOURCE_IN_USE: - printk("B1553RT rtems_io_register_driver failed: RTEMS_RESOURCE_IN_USE\n"); - return -1; - default: - printk("B1553RT rtems_io_register_driver failed\n"); - return -1; - } - } - return 0; -} - -int b1553rt_device_init(rt_priv *pDev) -{ - struct amba_dev_info *ambadev; - struct ambapp_core *pnpinfo; - union drvmgr_key_value *value; - unsigned int mem; - unsigned int sys_freq_hz; - - /* Get device information from AMBA PnP information */ - ambadev = (struct amba_dev_info *)pDev->dev->businfo; - if ( ambadev == NULL ) { - return -1; - } - pnpinfo = &ambadev->info; - pDev->irqno = pnpinfo->irq; - pDev->regs = (struct rt_reg *)pnpinfo->apb_slv->start; - pDev->minor = pDev->dev->minor_drv; - -#ifdef DEBUG - pDev->log_i = 0; - memset(pDev->log,0,sizeof(pDev->log)); - printf("LOG: 0x%x\n", &pDev->log[0]); - printf("LOG_I: 0x%x\n", &pDev->log_i); -#endif - - /* Get memory configuration from bus resources */ - value = drvmgr_dev_key_get(pDev->dev, "dmaBaseAdr", DRVMGR_KT_POINTER); - if (value) - mem = (unsigned int)value->ptr; - - if (value && (mem & 1)) { - /* Remote address, address as RT looks at it. */ - - /* Translate the base address into an address that the the CPU can understand */ - pDev->memarea_base = mem & ~1; - drvmgr_translate_check(pDev->dev, DMAMEM_TO_CPU, - (void *)pDev->memarea_base_remote, - (void **)&pDev->memarea_base, - 4 * 1024); - } else { - if (!value) { - /* Use dynamically allocated memory, - * 4k DMA memory + 4k for alignment - */ - mem = (unsigned int)malloc(4 * 1024 * 2); - if ( !mem ){ - printk("RT: Failed to allocate HW memory\n\r"); - return -1; - } - /* align memory to 4k boundary */ - pDev->memarea_base = (mem + 0xfff) & ~0xfff; - } else { - pDev->memarea_base = mem; - } - - /* Translate the base address into an address that the RT core can understand */ - drvmgr_translate_check(pDev->dev, CPUMEM_TO_DMA, - (void *)pDev->memarea_base, - (void **)&pDev->memarea_base_remote, - 4 * 1024); - } - - /* clear the used memory */ - memset((char *)pDev->memarea_base, 0, 4 * 1024); - - /* Set base address of all descriptors */ - pDev->memarea_base = (unsigned int)mem; - pDev->mem = (volatile unsigned short *)pDev->memarea_base; - - pDev->rt_event = NULL; - - /* The RT is always clocked at the same frequency as the bus - * If the frequency doesnt match it is defaulted to 24MHz, - * user can always override it. - */ - pDev->cfg_freq = RT_FREQ_24MHZ; - - /* Get frequency in Hz */ - if ( drvmgr_freq_get(pDev->dev, DEV_APB_SLV, &sys_freq_hz) == 0 ) { - if ( sys_freq_hz == 20000000 ) { - pDev->cfg_freq = RT_FREQ_20MHZ; - } else if ( sys_freq_hz == 16000000 ) { - pDev->cfg_freq = RT_FREQ_16MHZ; - } else if ( sys_freq_hz == 12000000 ) { - pDev->cfg_freq = RT_FREQ_12MHZ; - } - } - - value = drvmgr_dev_key_get(pDev->dev, "coreFreq", DRVMGR_KT_INT); - if ( value ) { - pDev->cfg_freq = value->i & RT_FREQ_MASK; - } - - /* RX Semaphore created with count = 0 */ - if ( rtems_semaphore_create(rtems_build_name('R', 'T', '0', '0' + pDev->minor), - 0, - RTEMS_FIFO|RTEMS_SIMPLE_BINARY_SEMAPHORE|RTEMS_NO_INHERIT_PRIORITY|RTEMS_LOCAL|RTEMS_NO_PRIORITY_CEILING, - 0, - &pDev->rx_sem) != RTEMS_SUCCESSFUL ) { - printk("RT: Failed to create rx semaphore\n"); - return RTEMS_INTERNAL_ERROR; - } - - /* Device Semaphore created with count = 1 */ - if ( rtems_semaphore_create(rtems_build_name('R', 'T', '0', '0' + pDev->minor), - 1, - RTEMS_FIFO|RTEMS_SIMPLE_BINARY_SEMAPHORE|RTEMS_NO_INHERIT_PRIORITY|RTEMS_LOCAL|RTEMS_NO_PRIORITY_CEILING, - 0, - &pDev->dev_sem) != RTEMS_SUCCESSFUL ){ - printk("RT: Failed to create device semaphore\n"); - return RTEMS_INTERNAL_ERROR; - } - - /* Default to RT-mode */ - rt_init(pDev); - - return 0; -} - -static int odd_parity(unsigned int data) -{ - unsigned int i=0; - - while(data) - { - i++; - data &= (data - 1); - } - - return !(i&1); -} - -static void start_operation(rt_priv *rt) -{ - -} - -static void stop_operation(rt_priv *rt) -{ - -} - -static void set_extmdata_en(rt_priv *rt, int extmdata) -{ - if ( extmdata ) - extmdata = 1; - rt->ctrl_copy = (rt->ctrl_copy & ~(1<<16)) | (extmdata<<16); - rt->regs->ctrl = rt->ctrl_copy; -} - -static void set_vector_word(rt_priv *rt, unsigned short vword) -{ - rt->regs->vword = vword; -} - -/* Set clock speed */ -static void set_clkspd(rt_priv *rt, int spd) -{ - rt->ctrl_copy = (rt->ctrl_copy & ~0xC0) | (spd<<6); - rt->regs->ctrl = rt->ctrl_copy; - asm volatile("nop"::); - rt->regs->ctrl = rt->ctrl_copy | (1<<20); -} - -static void set_rtaddr(rt_priv *rt, int addr) -{ - rt->ctrl_copy = (rt->ctrl_copy & ~0x3F00) | (addr << 8) | (odd_parity(addr)<<13); - rt->regs->ctrl = rt->ctrl_copy; -} - -static void set_broadcast_en(rt_priv *rt, int data) -{ - rt->ctrl_copy = (rt->ctrl_copy & ~0x40000) | (data<<18); - rt->regs->ctrl = rt->ctrl_copy; -} - -static rtems_device_driver rt_init(rt_priv *rt) -{ - rt->rx_blocking = 1; - - if ( rt->rt_event ) - free(rt->rt_event); - rt->rt_event = NULL; - - rt->rt_event = (struct rt_msg *) malloc(EVENT_QUEUE_SIZE*sizeof(struct rt_msg)); - - if (rt->rt_event == NULL) { - DBG("RT driver failed to allocated memory."); - return RTEMS_NO_MEMORY; - } - - rt->ctrl_copy = rt->regs->ctrl & 0x3F00; /* Keep rtaddr and rtaddrp */ - rt->ctrl_copy |= 0x3C0D0; /* broadcast disabled, extmdata=1, writetsw = writecmd = 1 */ - rt->regs->ctrl = rt->ctrl_copy; - - /* Set Clock speed */ - set_clkspd(rt, rt->cfg_freq); - - rt->regs->addr = rt->memarea_base_remote; - rt->regs->ipm = 0x70000; /* Enable RT RX, MEM Failure and AHB Error interrupts */ - - DBG("B1553RT DMA_AREA: 0x%x\n", (unsigned int)rt->mem); - - return RTEMS_SUCCESSFUL; -} - - -static rtems_device_driver rt_initialize(rtems_device_major_number major, rtems_device_minor_number minor, void *arg) -{ - return RTEMS_SUCCESSFUL; -} - -static rtems_device_driver rt_open(rtems_device_major_number major, rtems_device_minor_number minor, void *arg) { - rt_priv *rt; - struct drvmgr_dev *dev; - - FUNCDBG("rt_open\n"); - - if ( drvmgr_get_dev(&b1553rt_drv_info.general, minor, &dev) ) { - DBG("Wrong minor %d\n", minor); - return RTEMS_UNSATISFIED; - } - rt = (rt_priv *)dev->priv; - - if (rtems_semaphore_obtain(rt->dev_sem, RTEMS_NO_WAIT, RTEMS_NO_TIMEOUT) != RTEMS_SUCCESSFUL) { - DBG("rt_open: resource in use\n"); - return RTEMS_RESOURCE_IN_USE; /* EBUSY */ - } - - /* Set defaults */ - rt->event_id = 0; - - start_operation(rt); - - /* Register interrupt routine */ - if (drvmgr_interrupt_register(rt->dev, 0, "b1553rt", b1553rt_interrupt, rt)) { - rtems_semaphore_release(rt->dev_sem); - return -1; - } - - - return RTEMS_SUCCESSFUL; -} - -static rtems_device_driver rt_close(rtems_device_major_number major, rtems_device_minor_number minor, void *arg) -{ - rt_priv *rt; - struct drvmgr_dev *dev; - - FUNCDBG("rt_close"); - - if ( drvmgr_get_dev(&b1553rt_drv_info.general, minor, &dev) ) { - return RTEMS_UNSATISFIED; - } - rt = (rt_priv *)dev->priv; - - drvmgr_interrupt_unregister(rt->dev, 0, b1553rt_interrupt, rt); - - stop_operation(rt); - rtems_semaphore_release(rt->dev_sem); - - return RTEMS_SUCCESSFUL; -} - -static int get_messages(rt_priv *rt, void *buf, unsigned int msg_count) -{ - - struct rt_msg *dest = (struct rt_msg *) buf; - int count = 0; - - if (rt->head == rt->tail) { - return 0; - } - - do { - - DBG("rt read - head: %d, tail: %d\n", rt->head, rt->tail); - dest[count++] = rt->rt_event[INDEX(rt->tail++)]; - - } while (rt->head != rt->tail && count < msg_count); - - return count; - -} -static rtems_device_driver rt_read(rtems_device_major_number major, rtems_device_minor_number minor, void *arg) -{ - rtems_libio_rw_args_t *rw_args; - int count = 0; - rt_priv *rt; - struct drvmgr_dev *dev; - - if ( drvmgr_get_dev(&b1553rt_drv_info.general, minor, &dev) ) { - return RTEMS_UNSATISFIED; - } - rt = (rt_priv *)dev->priv; - - rw_args = (rtems_libio_rw_args_t *) arg; - - FUNCDBG("rt_read [%i,%i]: buf: 0x%x, len: %i\n",major, minor, (unsigned int)rw_args->buffer, rw_args->count); - - while ( (count = get_messages(rt,rw_args->buffer, rw_args->count)) == 0 ) { - - if (rt->rx_blocking) { - rtems_semaphore_obtain(rt->rx_sem, RTEMS_WAIT, RTEMS_NO_TIMEOUT); - } else { - /* Translates to EBUSY */ - return RTEMS_RESOURCE_IN_USE; - } - } - - rw_args->bytes_moved = count; - return RTEMS_SUCCESSFUL; -} - -static rtems_device_driver rt_write(rtems_device_major_number major, rtems_device_minor_number minor, void *arg) -{ - rtems_libio_rw_args_t *rw_args; - struct rt_msg *source; - rt_priv *rt; - struct drvmgr_dev *dev; - unsigned int descriptor, suba, wc; - - if ( drvmgr_get_dev(&b1553rt_drv_info.general, minor, &dev) ) { - return RTEMS_UNSATISFIED; - } - rt = (rt_priv *)dev->priv; - - rw_args = (rtems_libio_rw_args_t *) arg; - - if ( rw_args->count != 1 ) { - return RTEMS_INVALID_NAME; - } - - source = (struct rt_msg *) rw_args->buffer; - - descriptor = source[0].desc & 0x7F; - suba = descriptor-32; - wc = source[0].miw >> 11; - wc = wc ? wc : 32; - - FUNCDBG("rt_write [%i,%i]: buf: 0x%x\n",major, minor, (unsigned int)rw_args->buffer); - - memcpy((void *)&rt->mem[0x400 + suba*32], &source[0].data[0], wc*2); - - rw_args->bytes_moved = 1; - - return RTEMS_SUCCESSFUL; - -} - -static rtems_device_driver rt_control(rtems_device_major_number major, rtems_device_minor_number minor, void *arg) -{ - rtems_libio_ioctl_args_t *ioarg = (rtems_libio_ioctl_args_t *) arg; - unsigned int *data = ioarg->buffer; - - rt_priv *rt; - struct drvmgr_dev *dev; - - FUNCDBG("rt_control[%d]: [%i,%i]\n", minor, major, minor); - - if ( drvmgr_get_dev(&b1553rt_drv_info.general, minor, &dev) ) { - return RTEMS_UNSATISFIED; - } - rt = (rt_priv *)dev->priv; - - if (!ioarg) { - DBG("rt_control: invalid argument\n"); - return RTEMS_INVALID_NAME; - } - - ioarg->ioctl_return = 0; - switch (ioarg->command) { - - case RT_SET_ADDR: - set_rtaddr(rt, data[0]); - break; - - case RT_SET_BCE: - set_broadcast_en(rt, data[0]); - break; - - case RT_SET_VECTORW: - set_vector_word(rt, data[0]); - break; - - case RT_SET_EXTMDATA: - set_extmdata_en(rt, data[0]); - break; - - case RT_RX_BLOCK: - rt->rx_blocking = data[0]; - break; - - case RT_CLR_STATUS: - rt->status = 0; - break; - - case RT_GET_STATUS: /* copy status */ - if ( !ioarg->buffer ) - return RTEMS_INVALID_NAME; - - *(unsigned int *)ioarg->buffer = rt->status; - break; - - case RT_SET_EVENTID: - rt->event_id = (rtems_id)ioarg->buffer; - break; - - default: - return RTEMS_NOT_IMPLEMENTED; - } - - return RTEMS_SUCCESSFUL; -} - -static void b1553rt_interrupt(void *arg) -{ - rt_priv *rt = arg; - unsigned short descriptor; - int signal_event=0, wake_rx_task=0; - unsigned int event_status=0; - unsigned int wc, irqv, cmd, tsw, suba, tx, miw, i; - unsigned int ipend; - - #define SET_ERROR_DESCRIPTOR(descriptor) (event_status = (event_status & 0x0000ffff) | descriptor<<16) - ipend = rt->regs->ipm; - - if (ipend == 0) { - /* IRQ mask has been cleared, we must have been reset */ - /* Restore ctrl registers */ - rt->regs->ctrl = rt->ctrl_copy; - rt->regs->addr = rt->memarea_base_remote; - rt->regs->ipm = 0x70000; - /* Send reset mode code event */ - if (rt->head - rt->tail != EVENT_QUEUE_SIZE) { - miw = (8<<11); - descriptor = 64 + 32 + 8; - rt->rt_event[INDEX(rt->head)].miw = miw; - rt->rt_event[INDEX(rt->head)].time = 0; - rt->rt_event[INDEX(rt->head)].desc = descriptor; - rt->head++; - } - } - - if ( ipend & 0x1 ) { - /* RT IRQ */ - if (rt->head - rt->tail != EVENT_QUEUE_SIZE) { - - irqv = rt->regs->irq; - cmd = irqv >> 7; - wc = cmd & 0x1F; /* word count / mode code */ - suba = irqv & 0x1F; /* sub address (0-31) */ - tx = (irqv >> 5) & 1; - - /* read status word */ - tsw = READ_DMA(&rt->mem[tx*0x3E0+suba]); - - /* Build Message Information Word (B1553BRM-style) */ - miw = (wc<<11) | (tsw&RT_TSW_BUS)>>4 | !(tsw&RT_TSW_OK)>>7 | (tsw&RT_TSW_ILL)>>5 | - (tsw&RT_TSW_PAR)>>5 | (tsw&RT_TSW_MAN)>>7; - - descriptor = (tx << 5) | suba; - - /* Mode codes */ - if (suba == 0 || suba == 31) { - descriptor = 64 + (tx*32) + wc; - } - - /* Data received or transmitted */ - if (descriptor < 64) { - wc = wc ? wc : 32; /* wc = 0 means 32 words transmitted */ - } - /* RX Mode code */ - else if (descriptor < 96) { - wc = (wc>>4); - } - /* TX Mode code */ - else if (descriptor < 128) { - wc = (wc>>4); - } - - /* Copy to event queue */ - rt->rt_event[INDEX(rt->head)].miw = miw; - rt->rt_event[INDEX(rt->head)].time = 0; - - for (i = 0; i < wc; i++) { - rt->rt_event[INDEX(rt->head)].data[i] = READ_DMA(&rt->mem[tx*0x400 + suba*32 + i]); - } - rt->rt_event[INDEX(rt->head)].desc = descriptor; - rt->head++; - - - /* Handle errors */ - if ( tsw & RT_TSW_ILL){ - FUNCDBG("RT: RT_ILLCMD\n\r"); - rt->status |= RT_ILLCMD_IRQ; - event_status |= RT_ILLCMD_IRQ; - SET_ERROR_DESCRIPTOR(descriptor); - signal_event=1; - } - - if ( !(tsw & RT_TSW_OK) ) { - FUNCDBG("RT: RT_MERR_IRQ\n\r"); - rt->status |= RT_MERR_IRQ; - event_status |= RT_MERR_IRQ; - SET_ERROR_DESCRIPTOR(descriptor); - signal_event=1; - } - - } - else { - /* Indicate overrun */ - rt->rt_event[INDEX(rt->head)].desc |= 0x8000; - } - } - - if ( ipend & 0x2 ) { - /* Memory failure IRQ */ - FUNCDBG("B1553RT: Memory failure\n"); - event_status |= RT_DMAF_IRQ; - signal_event=1; - } - - if ( ipend & 0x4 ) { - /* AHB Error */ - FUNCDBG("B1553RT: AHB ERROR\n"); - event_status |= RT_DMAF_IRQ; - signal_event=1; - } - -#ifdef DEBUG - rt->log[rt->log_i++ % EVENT_QUEUE_SIZE] = descriptor; - rt->log[rt->log_i++ % EVENT_QUEUE_SIZE] = cmd; - rt->log[rt->log_i++ % EVENT_QUEUE_SIZE] = miw; - rt->log[rt->log_i++ % EVENT_QUEUE_SIZE] = tsw; -#endif - - wake_rx_task = 1; - - /* Wake any blocked rx thread only on receive interrupts */ - if ( wake_rx_task ) { - rtems_semaphore_release(rt->rx_sem); - } - - /* Copy current mask to status mask */ - if ( event_status ) { - if ( event_status & 0xffff0000 ) - rt->status &= 0x0000ffff; - rt->status |= event_status; - } - - /* signal event once */ - if ( signal_event && (rt->event_id != 0) ) { - rtems_event_send(rt->event_id, event_status); - } - -} - -void b1553rt_print_dev(struct drvmgr_dev *dev, int options) -{ - rt_priv *pDev = dev->priv; - - /* Print */ - printf("--- B1553RT[%d] %s ---\n", pDev->minor, pDev->devName); - printf(" REGS: 0x%x\n", (unsigned int)pDev->regs); - printf(" IRQ: %d\n", pDev->irqno); - -} - -void b1553rt_print(int options) -{ - struct amba_drv_info *drv = &b1553rt_drv_info; - struct drvmgr_dev *dev; - - dev = drv->general.dev; - while(dev) { - b1553rt_print_dev(dev, options); - dev = dev->next_in_drv; - } -} |