diff options
Diffstat (limited to 'c/src/lib/libbsp/sparc/shared/pci/gr_tmtc_1553.c')
| -rw-r--r-- | c/src/lib/libbsp/sparc/shared/pci/gr_tmtc_1553.c | 602 |
1 files changed, 0 insertions, 602 deletions
diff --git a/c/src/lib/libbsp/sparc/shared/pci/gr_tmtc_1553.c b/c/src/lib/libbsp/sparc/shared/pci/gr_tmtc_1553.c deleted file mode 100644 index ec51ec312d..0000000000 --- a/c/src/lib/libbsp/sparc/shared/pci/gr_tmtc_1553.c +++ /dev/null @@ -1,602 +0,0 @@ -/* GR-TMTC-1553 PCI Target driver. - * - * COPYRIGHT (c) 2008. - * Cobham Gaisler AB. - * - * Configures the GR-TMTC-1553 interface PCI board. - * This driver provides a AMBA PnP bus by using the general part - * of the AMBA PnP bus driver (ambapp_bus.c). - * - * Driver resources for the AMBA PnP bus provided can be set using - * gr_tmtc_1553_set_resources(). - * - * The license and distribution terms for this file may be - * found in found in the file LICENSE in this distribution or at - * http://www.rtems.org/license/LICENSE. - */ - -#include <stdio.h> -#include <stdlib.h> -#include <string.h> -#include <sys/types.h> -#include <sys/stat.h> - -#include <bsp.h> -#include <rtems/bspIo.h> -#include <rtems/score/isrlock.h> /* spin-lock */ -#include <pci.h> -#include <pci/access.h> - -#include <ambapp.h> -#include <grlib.h> -#include <drvmgr/drvmgr.h> -#include <drvmgr/ambapp_bus.h> -#include <drvmgr/pci_bus.h> -#include <drvmgr/bspcommon.h> -#include <bsp/genirq.h> - -#include <bsp/gr_tmtc_1553.h> - -/* map via rtems_interrupt_lock_* API: */ -#define SPIN_DECLARE(lock) RTEMS_INTERRUPT_LOCK_MEMBER(lock) -#define SPIN_INIT(lock, name) rtems_interrupt_lock_initialize(lock, name) -#define SPIN_LOCK(lock, level) rtems_interrupt_lock_acquire_isr(lock, &level) -#define SPIN_LOCK_IRQ(lock, level) rtems_interrupt_lock_acquire(lock, &level) -#define SPIN_UNLOCK(lock, level) rtems_interrupt_lock_release_isr(lock, &level) -#define SPIN_UNLOCK_IRQ(lock, level) rtems_interrupt_lock_release(lock, &level) -#define SPIN_IRQFLAGS(k) rtems_interrupt_lock_context k -#define SPIN_ISR_IRQFLAGS(k) SPIN_IRQFLAGS(k) - -/*#define DEBUG 1 */ - -#ifdef DEBUG -#define DBG(x...) printk(x) -#else -#define DBG(x...) -#endif - -/* PCI ID */ -#define PCIID_VENDOR_GAISLER 0x1AC8 - -int gr_tmtc_1553_init1(struct drvmgr_dev *dev); -int gr_tmtc_1553_init2(struct drvmgr_dev *dev); -void gr_tmtc_1553_isr (void *arg); - -struct gr_tmtc_1553_ver { - const unsigned int amba_freq_hz; /* The frequency */ - const unsigned int amba_ioarea; /* The address where the PnP IOAREA starts at */ -}; - -/* Private data structure for driver */ -struct gr_tmtc_1553_priv { - /* Driver management */ - struct drvmgr_dev *dev; - char prefix[32]; - SPIN_DECLARE(devlock); - - /* PCI */ - pci_dev_t pcidev; - struct pci_dev_info *devinfo; - - /* IRQ */ - genirq_t genirq; - - struct gr_tmtc_1553_ver *version; - struct irqmp_regs *irq; - struct drvmgr_map_entry bus_maps_down[2]; - - struct ambapp_bus abus; - struct ambapp_mmap amba_maps[4]; - struct ambapp_config config; -}; - -struct gr_tmtc_1553_ver gr_tmtc_1553_ver0 = { - .amba_freq_hz = 33333333, - .amba_ioarea = 0xfff00000, -}; - - -int ambapp_tmtc_1553_int_register( - struct drvmgr_dev *dev, - int irq, - const char *info, - drvmgr_isr handler, - void *arg); -int ambapp_tmtc_1553_int_unregister( - struct drvmgr_dev *dev, - int irq, - drvmgr_isr handler, - void *arg); -int ambapp_tmtc_1553_int_unmask( - struct drvmgr_dev *dev, - int irq); -int ambapp_tmtc_1553_int_mask( - struct drvmgr_dev *dev, - int irq); -int ambapp_tmtc_1553_int_clear( - struct drvmgr_dev *dev, - int irq); -int ambapp_tmtc_1553_get_params( - struct drvmgr_dev *dev, - struct drvmgr_bus_params *params); - -struct ambapp_ops ambapp_tmtc_1553_ops = { - .int_register = ambapp_tmtc_1553_int_register, - .int_unregister = ambapp_tmtc_1553_int_unregister, - .int_unmask = ambapp_tmtc_1553_int_unmask, - .int_mask = ambapp_tmtc_1553_int_mask, - .int_clear = ambapp_tmtc_1553_int_clear, - .get_params = ambapp_tmtc_1553_get_params -}; - -struct drvmgr_drv_ops gr_tmtc_1553_ops = -{ - {gr_tmtc_1553_init1, gr_tmtc_1553_init2, NULL, NULL}, - NULL, - NULL -}; - -struct pci_dev_id_match gr_tmtc_1553_ids[] = -{ - PCIID_DEVVEND(PCIID_VENDOR_GAISLER, PCIID_DEVICE_GR_TMTC_1553), - PCIID_END_TABLE /* Mark end of table */ -}; - -struct pci_drv_info gr_tmtc_1553_info = -{ - { - DRVMGR_OBJ_DRV, /* Driver */ - NULL, /* Next driver */ - NULL, /* Device list */ - DRIVER_PCI_GAISLER_TMTC_1553_ID, /* Driver ID */ - "GR-TMTC-1553_DRV", /* Driver Name */ - DRVMGR_BUS_TYPE_PCI, /* Bus Type */ - &gr_tmtc_1553_ops, - NULL, /* Funcs */ - 0, /* No devices yet */ - 0, - }, - &gr_tmtc_1553_ids[0] -}; - -/* Driver resources configuration for the AMBA bus on the GR-RASTA-IO board. - * It is declared weak so that the user may override it from the project file, - * if the default settings are not enough. - * - * The configuration consists of an array of configuration pointers, each - * pointer determine the configuration of one GR-RASTA-IO board. Pointer - * zero is for board0, pointer 1 for board1 and so on. - * - * The array must end with a NULL pointer. - */ -struct drvmgr_bus_res *gr_tmtc_1553_resources[] __attribute__((weak)) = -{ - NULL -}; - -void gr_tmtc_1553_register_drv(void) -{ - DBG("Registering GR-TMTC-1553 PCI driver\n"); - drvmgr_drv_register(&gr_tmtc_1553_info.general); -} - -void gr_tmtc_1553_isr (void *arg) -{ - struct gr_tmtc_1553_priv *priv = arg; - unsigned int status, tmp; - int irq; - SPIN_ISR_IRQFLAGS(irqflags); - - tmp = status = priv->irq->ipend; - - /* DBG("GR-RASTA-IO: IRQ 0x%x\n",status); */ - - SPIN_LOCK(&priv->devlock, irqflags); - for(irq=0; irq<16; irq++) { - if ( status & (1<<irq) ) { - genirq_doirq(priv->genirq, irq); - priv->irq->iclear = (1<<irq); - status &= ~(1<<irq); - if ( status == 0 ) - break; - } - } - SPIN_UNLOCK(&priv->devlock, irqflags); - - /* ACK interrupt, this is because PCI is Level, so the IRQ Controller still drives the IRQ. */ - if ( tmp ) - drvmgr_interrupt_clear(priv->dev, 0); - - DBG("GR-TMTC-1553-IRQ: 0x%x\n", tmp); -} - -static int gr_tmtc_1553_hw_init(struct gr_tmtc_1553_priv *priv) -{ - unsigned int *page0 = NULL; - struct ambapp_dev *tmp; - unsigned int pci_freq_hz; - struct pci_dev_info *devinfo = priv->devinfo; - uint32_t bar0, bar0_size; - - /* Select version of GR-TMTC-1553 board */ - switch (devinfo->rev) { - case 0: - priv->version = &gr_tmtc_1553_ver0; - break; - default: - return -2; - } - - bar0 = devinfo->resources[0].address; - bar0_size = devinfo->resources[0].size; - page0 = (unsigned int *)(bar0 + bar0_size/2); - - /* Point PAGE0 to start of board address map. RAM at 0xff000000, APB at 0xffc00000, IOAREA at 0xfff000000 */ - /* XXX We assume little endian host with byte twisting enabled here */ - *page0 = 0x010000ff; /* Set little endian mode on peripheral. */ - - /* Scan AMBA Plug&Play */ - - /* AMBA MAP bar0 (in CPU) ==> 0x80000000(remote amba address) */ - priv->amba_maps[0].size = 0x1000000; - priv->amba_maps[0].local_adr = bar0; - priv->amba_maps[0].remote_adr = 0xff000000; - - /* Addresses not matching with map be untouched */ - priv->amba_maps[2].size = 0xfffffff0; - priv->amba_maps[2].local_adr = 0; - priv->amba_maps[2].remote_adr = 0; - - /* Mark end of table */ - priv->amba_maps[3].size=0; - priv->amba_maps[3].local_adr = 0; - priv->amba_maps[3].remote_adr = 0; - - /* Start AMBA PnP scan at first AHB bus */ - ambapp_scan(&priv->abus, - bar0 + (priv->version->amba_ioarea & ~0xff000000), - NULL, &priv->amba_maps[0]); - - /* Frequency is the hsame as the PCI bus frequency */ - drvmgr_freq_get(priv->dev, 0, &pci_freq_hz); - - ambapp_freq_init(&priv->abus, NULL, pci_freq_hz); - - /* Find IRQ controller */ - tmp = (struct ambapp_dev *)ambapp_for_each(&priv->abus, - (OPTIONS_ALL|OPTIONS_APB_SLVS), - VENDOR_GAISLER, GAISLER_IRQMP, - ambapp_find_by_idx, NULL); - if ( !tmp ) { - return -4; - } - priv->irq = (struct irqmp_regs *)DEV_TO_APB(tmp)->start; - /* Set up irq controller */ - priv->irq->mask[0] = 0; - priv->irq->iclear = 0xffff; - priv->irq->ilevel = 0; - - /* DOWN streams translation table */ - priv->bus_maps_down[0].name = "PCI BAR0 -> AMBA"; - priv->bus_maps_down[0].size = priv->amba_maps[0].size; - priv->bus_maps_down[0].from_adr = (void *)priv->amba_maps[0].local_adr; - priv->bus_maps_down[0].to_adr = (void *)priv->amba_maps[0].remote_adr; - /* Mark end of translation table */ - priv->bus_maps_down[1].size = 0; - - /* Successfully registered the board */ - return 0; -} - - -/* Called when a PCI target is found with the PCI device and vendor ID - * given in gr_tmtc_1553_ids[]. - */ -int gr_tmtc_1553_init1(struct drvmgr_dev *dev) -{ - struct gr_tmtc_1553_priv *priv; - struct pci_dev_info *devinfo; - int status; - uint32_t bar0, bar0_size; - int resources_cnt; - - /* PCI device does not have the IRQ line register, when PCI autoconf configures it the configuration - * is forgotten. We take the IRQ number from the PCI Host device (AMBA device), this works as long - * as PCI-IRQs are ored together on the bus. - * - * Note that this only works on LEON. - */ - ((struct pci_dev_info *)dev->businfo)->irq = ((struct amba_dev_info *)dev->parent->dev->businfo)->info.irq; - - priv = malloc(sizeof(struct gr_tmtc_1553_priv)); - if ( !priv ) - return DRVMGR_NOMEM; - - memset(priv, 0, sizeof(*priv)); - dev->priv = priv; - priv->dev = dev; - - /* Determine number of configurations */ - resources_cnt = get_resarray_count(gr_tmtc_1553_resources); - - /* Generate Device prefix */ - - strcpy(priv->prefix, "/dev/tmtc1553_0"); - priv->prefix[14] += dev->minor_drv; - mkdir(priv->prefix, S_IRWXU | S_IRWXG | S_IRWXO); - priv->prefix[15] = '/'; - priv->prefix[16] = '\0'; - - priv->devinfo = devinfo = (struct pci_dev_info *)dev->businfo; - priv->pcidev = devinfo->pcidev; - bar0 = devinfo->resources[0].address; - bar0_size = devinfo->resources[0].size; - printf("\n\n--- GR-TMTC-1553[%d] ---\n", dev->minor_drv); - printf(" PCI BUS: 0x%x, SLOT: 0x%x, FUNCTION: 0x%x\n", - PCI_DEV_EXPAND(priv->pcidev)); - printf(" PCI VENDOR: 0x%04x, DEVICE: 0x%04x\n", - devinfo->id.vendor, devinfo->id.device); - printf(" PCI BAR[0]: 0x%lx - 0x%lx\n", bar0, bar0 + bar0_size - 1); - printf(" IRQ: %d\n\n\n", devinfo->irq); - - /* all neccessary space assigned to GR-TMTC-1553 target? */ - if (bar0_size == 0) - return DRVMGR_ENORES; - - /* Initialize spin-lock for this PCI peripheral device. This is to - * protect the Interrupt Controller Registers. The genirq layer is - * protecting its own internals and ISR dispatching. - */ - SPIN_INIT(&priv->devlock, priv->prefix); - - priv->genirq = genirq_init(16); - if ( priv->genirq == NULL ) { - free(priv); - dev->priv = NULL; - return DRVMGR_FAIL; - } - - status = gr_tmtc_1553_hw_init(priv); - if ( status != 0 ) { - genirq_destroy(priv->genirq); - free(priv); - dev->priv = NULL; - printf(" Failed to initialize GR-TMTC-1553 HW: %d\n", status); - return DRVMGR_FAIL; - } - - /* Init amba bus */ - priv->config.abus = &priv->abus; - priv->config.ops = &ambapp_tmtc_1553_ops; - priv->config.maps_down = &priv->bus_maps_down[0]; - /* This PCI device has only target interface so DMA is not supported, - * which means that translation from AMBA->PCI should fail if attempted. - */ - priv->config.maps_up = DRVMGR_TRANSLATE_NO_BRIDGE; - if ( priv->dev->minor_drv < resources_cnt ) { - priv->config.resources = gr_tmtc_1553_resources[priv->dev->minor_drv]; - } else { - priv->config.resources = NULL; - } - - /* Create And Register AMBA PnP Bus */ - return ambapp_bus_register(dev, &priv->config); -} - -int gr_tmtc_1553_init2(struct drvmgr_dev *dev) -{ - struct gr_tmtc_1553_priv *priv = dev->priv; - - /* Clear any old interrupt requests */ - drvmgr_interrupt_clear(dev, 0); - - /* Enable System IRQ so that GR-TMTC-1553 PCI target interrupt goes through. - * - * It is important to enable it in stage init2. If interrupts were enabled in init1 - * this might hang the system when more than one PCI target is connected, this is - * because PCI interrupts might be shared and PCI target 2 have not initialized and - * might therefore drive interrupt already when entering init1(). - */ - drvmgr_interrupt_register( - dev, - 0, - "gr_tmtc_1553", - gr_tmtc_1553_isr, - (void *)priv); - - return DRVMGR_OK; -} - -int ambapp_tmtc_1553_int_register( - struct drvmgr_dev *dev, - int irq, - const char *info, - drvmgr_isr handler, - void *arg) -{ - struct gr_tmtc_1553_priv *priv = dev->parent->dev->priv; - SPIN_IRQFLAGS(irqflags); - int status; - void *h; - - h = genirq_alloc_handler(handler, arg); - if ( h == NULL ) - return DRVMGR_FAIL; - - SPIN_LOCK_IRQ(&priv->devlock, irqflags); - - status = genirq_register(priv->genirq, irq, h); - if ( status == 0 ) { - /* Disable and clear IRQ for first registered handler */ - priv->irq->iclear = (1<<irq); - priv->irq->mask[0] &= ~(1<<irq); /* mask interrupt source */ - } else if ( status == 1 ) - status = 0; - - if (status != 0) { - SPIN_UNLOCK_IRQ(&priv->devlock, irqflags); - genirq_free_handler(h); - return DRVMGR_FAIL; - } - - status = genirq_enable(priv->genirq, irq, handler, arg); - if ( status == 0 ) { - /* Enable IRQ for first enabled handler only */ - priv->irq->mask[0] |= (1<<irq); /* unmask interrupt source */ - } else if ( status == 1 ) - status = 0; - - SPIN_UNLOCK_IRQ(&priv->devlock, irqflags); - - return status; -} - -int ambapp_tmtc_1553_int_unregister( - struct drvmgr_dev *dev, - int irq, - drvmgr_isr isr, - void *arg) -{ - struct gr_tmtc_1553_priv *priv = dev->parent->dev->priv; - SPIN_IRQFLAGS(irqflags); - int status; - void *handler; - - SPIN_LOCK_IRQ(&priv->devlock, irqflags); - - status = genirq_disable(priv->genirq, irq, isr, arg); - if ( status == 0 ) { - /* Disable IRQ only when no enabled handler exists */ - priv->irq->mask[0] &= ~(1<<irq); /* mask interrupt source */ - } else if ( status == 1 ) - status = 0; - - handler = genirq_unregister(priv->genirq, irq, isr, arg); - if ( handler == NULL ) - status = DRVMGR_FAIL; - else - status = DRVMGR_OK; - - SPIN_UNLOCK_IRQ(&priv->devlock, irqflags); - - if (handler) - genirq_free_handler(handler); - - return status; -} - -int ambapp_tmtc_1553_int_unmask( - struct drvmgr_dev *dev, - int irq) -{ - struct gr_tmtc_1553_priv *priv = dev->parent->dev->priv; - SPIN_IRQFLAGS(irqflags); - - DBG("TMTC-1553 IRQ %d: enable\n", irq); - - if ( genirq_check(priv->genirq, irq) ) - return DRVMGR_FAIL; - - SPIN_LOCK_IRQ(&priv->devlock, irqflags); - - /* Enable IRQ */ - priv->irq->mask[0] |= (1<<irq); /* unmask interrupt source */ - - SPIN_UNLOCK_IRQ(&priv->devlock, irqflags); - - return DRVMGR_OK; -} - -int ambapp_tmtc_1553_int_mask( - struct drvmgr_dev *dev, - int irq) -{ - struct gr_tmtc_1553_priv *priv = dev->parent->dev->priv; - SPIN_IRQFLAGS(irqflags); - - DBG("TMTC-1553 IRQ %d: disable\n", irq); - - if ( genirq_check(priv->genirq, irq) ) - return DRVMGR_FAIL; - - SPIN_LOCK_IRQ(&priv->devlock, irqflags); - - /* Disable IRQ */ - priv->irq->mask[0] &= ~(1<<irq); /* mask interrupt source */ - - SPIN_UNLOCK_IRQ(&priv->devlock, irqflags); - - return DRVMGR_OK; -} - -int ambapp_tmtc_1553_int_clear( - struct drvmgr_dev *dev, - int irq) -{ - struct gr_tmtc_1553_priv *priv = dev->parent->dev->priv; - - if ( genirq_check(priv->genirq, irq) ) - return DRVMGR_FAIL; - - priv->irq->iclear = (1<<irq); - - return DRVMGR_OK; -} - -int ambapp_tmtc_1553_get_params(struct drvmgr_dev *dev, struct drvmgr_bus_params *params) -{ - struct gr_tmtc_1553_priv *priv = dev->parent->dev->priv; - - /* Device name prefix pointer, skip /dev */ - params->dev_prefix = &priv->prefix[5]; - - return 0; -} - -void gr_tmtc_1553_print_dev(struct drvmgr_dev *dev, int options) -{ - struct gr_tmtc_1553_priv *priv = dev->priv; - struct pci_dev_info *devinfo = priv->devinfo; - uint32_t bar0, bar0_size; - - /* Print */ - printf("--- GR-TMTC-1553 [bus 0x%x, dev 0x%x, fun 0x%x] ---\n", - PCI_DEV_EXPAND(priv->pcidev)); - - bar0 = devinfo->resources[0].address; - bar0_size = devinfo->resources[0].size; - - printf(" PCI BAR[0]: 0x%lx - 0x%lx\n", bar0, bar0 + bar0_size - 1); - printf(" IRQ REGS: 0x%x\n", (unsigned int)priv->irq); - printf(" IRQ: %d\n", devinfo->irq); - printf(" FREQ: %d Hz\n", priv->version->amba_freq_hz); - printf(" IMASK: 0x%08x\n", priv->irq->mask[0]); - printf(" IPEND: 0x%08x\n", priv->irq->ipend); - - /* Print amba config */ - if ( options & TMTC_1553_OPTIONS_AMBA ) { - ambapp_print(&priv->abus, 10); - } -#if 0 - /* Print IRQ handlers and their arguments */ - if ( options & TMTC_1553_OPTIONS_IRQ ) { - int i; - for(i=0; i<16; i++) { - printf(" IRQ[%02d]: 0x%x, arg: 0x%x\n", - i, (unsigned int)priv->isrs[i].handler, (unsigned int)priv->isrs[i].arg); - } - } -#endif -} - -void gr_tmtc_1553_print(int options) -{ - struct pci_drv_info *drv = &gr_tmtc_1553_info; - struct drvmgr_dev *dev; - - dev = drv->general.dev; - while(dev) { - gr_tmtc_1553_print_dev(dev, options); - dev = dev->next_in_drv; - } -} |