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author | Joel Sherrill <joel.sherrill@OARcorp.com> | 2007-09-06 13:27:25 +0000 |
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committer | Joel Sherrill <joel.sherrill@OARcorp.com> | 2007-09-06 13:27:25 +0000 |
commit | 226455f9fffef4c88b67aeef113a97dcaabd4b00 (patch) | |
tree | 8771eee8053655a1c09977a68efd2ba35ee173c5 /c/src/lib/libbsp/sparc/shared/can/grcan_rasta.c | |
parent | 2007-09-06 Daniel Hellstrom <daniel@gaisler.com> (diff) | |
download | rtems-226455f9fffef4c88b67aeef113a97dcaabd4b00.tar.bz2 |
2007-09-06 Daniel Hellstrom <daniel@gaisler.com>
New drivers: PCI, b1553BRM, SpaceWire(GRSPW), CAN (GRCAN,OC_CAN),
Raw UART.
* shared/1553/b1553brm.c, shared/1553/b1553brm_pci.c,
shared/1553/b1553brm_rasta.c, shared/can/grcan.c,
shared/can/grcan_rasta.c, shared/can/occan.c, shared/can/occan_pci.c,
shared/spw/grspw.c, shared/spw/grspw_pci.c, shared/spw/grspw_rasta.c,
shared/uart/apbuart.c, shared/uart/apbuart_pci.c,
shared/uart/apbuart_rasta.c: New files missed in previous commit.
Diffstat (limited to '')
-rw-r--r-- | c/src/lib/libbsp/sparc/shared/can/grcan_rasta.c | 99 |
1 files changed, 99 insertions, 0 deletions
diff --git a/c/src/lib/libbsp/sparc/shared/can/grcan_rasta.c b/c/src/lib/libbsp/sparc/shared/can/grcan_rasta.c new file mode 100644 index 0000000000..5f6701fa4c --- /dev/null +++ b/c/src/lib/libbsp/sparc/shared/can/grcan_rasta.c @@ -0,0 +1,99 @@ + +#include <rasta.h> + +/* PCI frequency */ +#define SYS_FREQ_HZ 33000000 + +/*#define USE_AT697_RAM 1 */ + +/* memarea_to_hw(x) + * + * x: address in AT697 address space + * + * returns the address in the RASTA address space that can be used to access x with dma. + * +*/ +#ifdef USE_AT697_RAM +static inline unsigned int memarea_to_hw(unsigned int addr) { + return ((addr & 0x0fffffff) | RASTA_PCI_BASE); +} +#else +static inline unsigned int memarea_to_hw(unsigned int addr) { + return ((addr & 0x0fffffff) | RASTA_LOCAL_SRAM); +} +#endif + +#define MEMAREA_TO_HW(x) memarea_to_hw(x) + +#define IRQ_CLEAR_PENDING(irqno) +#define IRQ_UNMASK(irqno) +#define IRQ_MASK(irqno) + +#define IRQ_GLOBAL_DISABLE() sparc_disable_interrupts() +#define IRQ_GLOBAL_ENABLE() sparc_enable_interrupts() + +#define GRCAN_REG_INT(handler,irqno,arg) \ + if ( grcan_rasta_int_reg ) \ + grcan_rasta_int_reg(handler,irqno,arg); + +void (*grcan_rasta_int_reg)(void *handler, int irq, void *arg) = 0; + +#define GRCAN_PREFIX(name) grcan_rasta##name + +/* We provide our own handler */ +#define GRCAN_DONT_DECLARE_IRQ_HANDLER + +#define GRCAN_REG_BYPASS_CACHE +#define GRCAN_DMA_BYPASS_CACHE + +#define GRCAN_MAX_CORES 1 + +/* Custom Statically allocated memory */ +#undef STATICALLY_ALLOCATED_TX_BUFFER +#undef STATICALLY_ALLOCATED_RX_BUFFER + +#define STATIC_TX_BUF_SIZE 4096 +#define STATIC_RX_BUF_SIZE 4096 +#define TX_BUF_SIZE 4096 +#define RX_BUF_SIZE 4096 + +#define STATIC_TX_BUF_ADDR(core) \ + (grcan_rasta_rambase+(core)*(STATIC_TX_BUF_SIZE+STATIC_RX_BUF_SIZE)) + +#define STATIC_RX_BUF_ADDR(core) \ + (grcan_rasta_rambase+(core)*(STATIC_TX_BUF_SIZE+STATIC_RX_BUF_SIZE)+STATIC_RX_BUF_SIZE) + + +#define GRCAN_DEVNAME "/dev/grcan0" +#define GRCAN_DEVNAME_NO(devstr,no) ((devstr)[10]='0'+(no)) + +static int grcan_rasta_calc_memoffs(int maxcores, int corenum, unsigned int *mem_base, unsigned int *mem_end, unsigned int *bdtable_base); + +void grcan_rasta_interrupt_handler(int irq, void *pDev); + +unsigned int grcan_rasta_rambase; + +#include "grcan.c" + + +int grcan_rasta_ram_register(amba_confarea_type *abus, int rambase) +{ + grcan_rasta_rambase = rambase; + + return GRCAN_PREFIX(_register)(abus); +} +#if 0 +static void grcan_rasta_interrupt_handler(int v) +{ + /* We know there is always only one GRCAN core in a RASTA chip... */ + grcan_interrupt(&grcans[0]); + /* + struct grcan_priv *pDev = arg; + grcan_interrupt(pDev); + */ +} +#endif +void GRCAN_PREFIX(_interrupt_handler)(int irq, void *pDev) +{ + grcan_interrupt(pDev); +} |