On Sun, Dec 04, 2016 at 11:46:57PM +0530, Hemant Agrawal wrote:
> This patch intoduces the DPAA2 MC(Management complex Driver)
>
> This driver is common to be used by various DPAA2 net, crypto
> and other drivers
>
> Signed-off-by: Cristian Sovaiala <cristian.sovai...@nxp.com>
> [Hemant:rebase and conversion to library for DPDK]
> Signed-off-by: Hemant Agrawal <hemant.agra...@nxp.com>
> +#ifndef _FSL_MC_SYS_H
> +#define _FSL_MC_SYS_H
> +
> +#ifdef __linux_driver__
> +
> +#include <linux/errno.h>
> +#include <asm/io.h>
> +#include <linux/slab.h>
> +
> +struct fsl_mc_io {
> + void *regs;
> +};
> +
> +#ifndef ENOTSUP
> +#define ENOTSUP 95
> +#endif
> +
> +#define ioread64(_p) readq(_p)
> +#define iowrite64(_v, _p) writeq(_v, _p)
> +
> +#else /* __linux_driver__ */
> +
> +#include <stdio.h>
> +#include <libio.h>
> +#include <stdint.h>
> +#include <errno.h>
> +#include <sys/uio.h>
> +#include <linux/byteorder/little_endian.h>
> +
> +#define cpu_to_le64(x) __cpu_to_le64(x)
> +#ifndef dmb
> +#define dmb() {__asm__ __volatile__("" : : : "memory"); }
> +#endif
Better to use DPDK macros here.
> +#define __iormb() dmb()
> +#define __iowmb() dmb()
> +#define __arch_getq(a) (*(volatile unsigned long *)(a))
> +#define __arch_putq(v, a) (*(volatile unsigned long *)(a) =
> (v))
> +#define __arch_putq32(v, a) (*(volatile unsigned int *)(a) =
> (v))
> +#define readq(c) \
> + ({ uint64_t __v = __arch_getq(c); __iormb(); __v; })
> +#define writeq(v, c) \
> + ({ uint64_t __v = v; __iowmb(); __arch_putq(__v, c); __v; })
> +#define writeq32(v, c) \
> + ({ uint32_t __v = v; __iowmb(); __arch_putq32(__v, c); __v; })
> +#define ioread64(_p) readq(_p)
> +#define iowrite64(_v, _p) writeq(_v, _p)
> +#define iowrite32(_v, _p) writeq32(_v, _p)
Hopefully, we can clean all this once rte_read32 and rte_write32 becomes
mainline
http://dpdk.org/dev/patchwork/patch/17935/
> +#define __iomem
> +
> +struct fsl_mc_io {
> + void *regs;
> +};
> +
> +#ifndef ENOTSUP
> +#define ENOTSUP 95
> +#endif
> +
> +/*GPP is supposed to use MC commands with low priority*/
> +#define CMD_PRI_LOW 0 /*!< Low Priority command indication */
> +
> +struct mc_command;
> +
> +int mc_send_command(struct fsl_mc_io *mc_io, struct mc_command *cmd);
> +
> +#endif /* __linux_driver__ */
> +
> +#endif /* _FSL_MC_SYS_H */
> +
> +/** User space framework uses MC Portal in shared mode. Following change
> +* introduces lock in MC FLIB
> +*/
> +
> +/**
> +* The mc_spinlock_t type.
> +*/
> +typedef struct {
> + volatile int locked; /**< lock status 0 = unlocked, 1 = locked */
> +} mc_spinlock_t;
> +
> +/**
> +* A static spinlock initializer.
> +*/
> +static mc_spinlock_t mc_portal_lock = { 0 };
> +
> +static inline void mc_pause(void) {}
> +
> +static inline void mc_spinlock_lock(mc_spinlock_t *sl)
> +{
> + while (__sync_lock_test_and_set(&sl->locked, 1))
> + while (sl->locked)
> + mc_pause();
> +}
> +
> +static inline void mc_spinlock_unlock(mc_spinlock_t *sl)
> +{
> + __sync_lock_release(&sl->locked);
> +}
> +
DPDK spinlock can be used here.
