diff options
Diffstat (limited to 'c/src/lib/libbsp/sparc/shared/1553/gr1553b.c')
| -rw-r--r-- | c/src/lib/libbsp/sparc/shared/1553/gr1553b.c | 310 |
1 files changed, 0 insertions, 310 deletions
diff --git a/c/src/lib/libbsp/sparc/shared/1553/gr1553b.c b/c/src/lib/libbsp/sparc/shared/1553/gr1553b.c deleted file mode 100644 index c05d53a4f9..0000000000 --- a/c/src/lib/libbsp/sparc/shared/1553/gr1553b.c +++ /dev/null @@ -1,310 +0,0 @@ -/* GR1553B driver, used by BC, RT and/or BM driver - * - * COPYRIGHT (c) 2010. - * 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 <stdlib.h> -#include <drvmgr/ambapp_bus.h> - -#include <bsp/gr1553b.h> - -/* Driver Manager interface for BC, RT, BM, BRM, BC-BM and RT-BM */ - -#define GR1553B_WRITE_REG(adr, val) *(volatile uint32_t *)(adr) = (val) -#define GR1553B_READ_REG(adr) (*(volatile uint32_t *)(adr)) - -#define FEAT_BC 0x1 -#define FEAT_RT 0x2 -#define FEAT_BM 0x4 - -#define ALLOC_BC 0x1 -#define ALLOC_RT 0x2 -#define ALLOC_BM 0x4 - -struct gr1553_device { - struct drvmgr_dev *dev; - int features; - int alloc; -}; - -struct gr1553_device_feature { - struct gr1553_device_feature *next; - struct gr1553_device *dev; - int minor; -}; - -/* Device lists */ -static struct gr1553_device_feature *gr1553_bm_root = NULL; -static struct gr1553_device_feature *gr1553_rt_root = NULL; -static struct gr1553_device_feature *gr1553_bc_root = NULL; - -/* Driver registered */ -static int gr1553_driver_registerd = 0; - -/* Add 'feat' to linked list pointed to by 'root'. A minor is also assigned. */ -static void gr1553_list_add - ( - struct gr1553_device_feature **root, - struct gr1553_device_feature *feat - ) -{ - int minor; - struct gr1553_device_feature *curr; - - if ( *root == NULL ) { - *root = feat; - feat->next = NULL; - feat->minor = 0; - return; - } - - minor = 0; -retry_new_minor: - curr = *root; - while ( curr->next ) { - if ( curr->minor == minor ) { - minor++; - goto retry_new_minor; - } - curr = curr->next; - } - - feat->next = NULL; - feat->minor = minor; - curr->next = feat; -} - -static struct gr1553_device_feature *gr1553_list_find - ( - struct gr1553_device_feature *root, - int minor - ) -{ - struct gr1553_device_feature *curr = root; - while ( curr ) { - if ( curr->minor == minor ) { - return curr; - } - curr = curr->next; - } - return NULL; -} - -struct drvmgr_dev **gr1553_bc_open(int minor) -{ - struct gr1553_device_feature *feat; - - feat = gr1553_list_find(gr1553_bc_root, minor); - if ( feat == NULL ) - return NULL; - - /* Only possible to allocate is RT and BC is free, - * this is beacuse it is not possible to use the - * RT and the BC at the same time. - */ - if ( feat->dev->alloc & (ALLOC_BC|ALLOC_RT) ) - return NULL; - - /* Alloc BC device */ - feat->dev->alloc |= ALLOC_BC; - - return &feat->dev->dev; -} - -void gr1553_bc_close(struct drvmgr_dev **dev) -{ - struct gr1553_device *d = (struct gr1553_device *)dev; - - d->alloc &= ~ALLOC_BC; -} - -struct drvmgr_dev **gr1553_rt_open(int minor) -{ - struct gr1553_device_feature *feat; - - feat = gr1553_list_find(gr1553_rt_root, minor); - if ( feat == NULL ) - return NULL; - - /* Only possible to allocate is RT and BC is free, - * this is beacuse it is not possible to use the - * RT and the BC at the same time. - */ - if ( feat->dev->alloc & (ALLOC_BC|ALLOC_RT) ) - return NULL; - - /* Alloc RT device */ - feat->dev->alloc |= ALLOC_RT; - - return &feat->dev->dev; -} - -void gr1553_rt_close(struct drvmgr_dev **dev) -{ - struct gr1553_device *d = (struct gr1553_device *)dev; - - d->alloc &= ~ALLOC_RT; -} - -struct drvmgr_dev **gr1553_bm_open(int minor) -{ - struct gr1553_device_feature *feat; - - feat = gr1553_list_find(gr1553_bm_root, minor); - if ( feat == NULL ) - return NULL; - - /* Only possible to allocate is RT and BC is free, - * this is beacuse it is not possible to use the - * RT and the BC at the same time. - */ - if ( feat->dev->alloc & ALLOC_BM ) - return NULL; - - /* Alloc BM device */ - feat->dev->alloc |= ALLOC_BM; - - return &feat->dev->dev; -} - -void gr1553_bm_close(struct drvmgr_dev **dev) -{ - struct gr1553_device *d = (struct gr1553_device *)dev; - - d->alloc &= ~ALLOC_BM; -} - -static int gr1553_init2(struct drvmgr_dev *dev) -{ - struct amba_dev_info *ambadev; - struct ambapp_core *pnpinfo; - struct gr1553b_regs *regs; - - /* Get device information from AMBA PnP information */ - ambadev = (struct amba_dev_info *)dev->businfo; - if ( ambadev == NULL ) { - return DRVMGR_FAIL; - } - pnpinfo = &ambadev->info; - if ( pnpinfo->apb_slv == NULL ) - return DRVMGR_EIO; - regs = (struct gr1553b_regs *)pnpinfo->apb_slv->start; - - /* Stop IRQ */ - GR1553B_WRITE_REG(®s->imask, 0); - GR1553B_WRITE_REG(®s->irq, 0xffffffff); - /* Stop BC if not already stopped (just in case) */ - GR1553B_WRITE_REG(®s->bc_ctrl, 0x15520204); - /* Stop RT rx (just in case) */ - GR1553B_WRITE_REG(®s->rt_cfg, 0x15530000); - /* Stop BM logging (just in case) */ - GR1553B_WRITE_REG(®s->bm_ctrl, 0); - - return DRVMGR_OK; -} - -/* Register the different functionalities that the - * core supports. - */ -static int gr1553_init3(struct drvmgr_dev *dev) -{ - struct amba_dev_info *ambadev; - struct ambapp_core *pnpinfo; - struct gr1553_device *priv; - struct gr1553_device_feature *feat; - struct gr1553b_regs *regs; - - priv = malloc(sizeof(struct gr1553_device)); - if ( priv == NULL ) - return DRVMGR_NOMEM; - priv->dev = dev; - priv->alloc = 0; - priv->features = 0; - dev->priv = NULL; /* Let higher level driver handle this */ - - /* Get device information from AMBA PnP information */ - ambadev = (struct amba_dev_info *)dev->businfo; - pnpinfo = &ambadev->info; - regs = (struct gr1553b_regs *)pnpinfo->apb_slv->start; - - if ( GR1553B_READ_REG(®s->bm_stat) & GR1553B_BM_STAT_BMSUP ) { - priv->features |= FEAT_BM; - feat = malloc(sizeof(struct gr1553_device_feature)); - feat->dev = priv; - /* Init Minor and Next */ - gr1553_list_add(&gr1553_bm_root, feat); - } - - if ( GR1553B_READ_REG(®s->bc_stat) & GR1553B_BC_STAT_BCSUP ) { - priv->features |= FEAT_BC; - feat = malloc(sizeof(struct gr1553_device_feature)); - feat->dev = priv; - /* Init Minor and Next */ - gr1553_list_add(&gr1553_bc_root, feat); - } - - if ( GR1553B_READ_REG(®s->rt_stat) & GR1553B_RT_STAT_RTSUP ) { - priv->features |= FEAT_RT; - feat = malloc(sizeof(struct gr1553_device_feature)); - feat->dev = priv; - /* Init Minor and Next */ - gr1553_list_add(&gr1553_rt_root, feat); - } - - if ( priv->features == 0 ) { - /* no features in HW should never happen.. an I/O error? */ - free(priv); - return DRVMGR_EIO; - } - - return DRVMGR_OK; -} - -struct drvmgr_drv_ops gr1553_ops = -{ - {NULL, gr1553_init2, gr1553_init3, NULL}, - NULL, - NULL -}; - -struct amba_dev_id gr1553_ids[] = -{ - {VENDOR_GAISLER, GAISLER_GR1553B}, - {0, 0} /* Mark end of table */ -}; - -struct amba_drv_info gr1553_drv_info = -{ - { - DRVMGR_OBJ_DRV, /* Driver */ - NULL, /* Next driver */ - NULL, /* Device list */ - DRIVER_AMBAPP_GAISLER_GR1553B_ID,/* Driver ID */ - "GR1553_DRV", /* Driver Name */ - DRVMGR_BUS_TYPE_AMBAPP, /* Bus Type */ - &gr1553_ops, - NULL, /* Funcs */ - 0, /* No devices yet */ - 0, - }, - &gr1553_ids[0] -}; - -/* Multiple drivers may call this function. The drivers that depends on - * this driver: - * - BM driver - * - BC driver - * - RT driver - */ -void gr1553_register(void) -{ - if ( gr1553_driver_registerd == 0 ) { - gr1553_driver_registerd = 1; - drvmgr_drv_register(&gr1553_drv_info.general); - } -} |