freebsd-dev/sys/dev/e1000/e1000_osdep.h
Matt Macy d5210708dd Sleep rather than spin in e1000 when doing long running config operations.
With r333218 it is now possible for drivers to use an sx lock and thus sleep while
waiting on long running operations rather than DELAY().

Reported by:	gallatin
Reviewed by:	sbruno
Approved by:	sbruno
MFC after:	1 month
Sponsored by:	Limelight Networks
Differential Revision:	https://reviews.freebsd.org/D14984
2018-05-08 01:39:45 +00:00

274 lines
8.9 KiB
C

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Copyright (c) 2001-2015, Intel Corporation
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/*$FreeBSD$*/
#ifndef _FREEBSD_OS_H_
#define _FREEBSD_OS_H_
#include <sys/types.h>
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/proc.h>
#include <sys/lock.h>
#include <sys/mutex.h>
#include <sys/mbuf.h>
#include <sys/protosw.h>
#include <sys/socket.h>
#include <sys/malloc.h>
#include <sys/kernel.h>
#include <sys/bus.h>
#include <net/ethernet.h>
#include <net/if.h>
#include <net/if_var.h>
#include <net/iflib.h>
#include <machine/bus.h>
#include <sys/rman.h>
#include <machine/resource.h>
#include <vm/vm.h>
#include <vm/pmap.h>
#include <machine/clock.h>
#include <dev/pci/pcivar.h>
#include <dev/pci/pcireg.h>
#define ASSERT(x) if(!(x)) panic("EM: x")
#define us_scale(x) max(1, (x/(1000000/hz)))
static inline int
ms_scale(int x) {
if (hz == 1000) {
return (x);
} else if (hz > 1000) {
return (x*(hz/1000));
} else {
return (max(1, x/(1000/hz)));
}
}
static inline void
safe_pause_us(int x) {
if (cold) {
DELAY(x);
} else {
pause("e1000_delay", max(1, x/(1000000/hz)));
}
}
static inline void
safe_pause_ms(int x) {
if (cold) {
DELAY(x*1000);
} else {
pause("e1000_delay", ms_scale(x));
}
}
#define usec_delay(x) safe_pause_us(x)
#define usec_delay_irq(x) usec_delay(x)
#define msec_delay(x) safe_pause_ms(x)
#define msec_delay_irq(x) msec_delay(x)
/* Enable/disable debugging statements in shared code */
#define DBG 0
#define DEBUGOUT(...) \
do { if (DBG) printf(__VA_ARGS__); } while (0)
#define DEBUGOUT1(...) DEBUGOUT(__VA_ARGS__)
#define DEBUGOUT2(...) DEBUGOUT(__VA_ARGS__)
#define DEBUGOUT3(...) DEBUGOUT(__VA_ARGS__)
#define DEBUGOUT7(...) DEBUGOUT(__VA_ARGS__)
#define DEBUGFUNC(F) DEBUGOUT(F "\n")
#define STATIC static
#define FALSE 0
#define TRUE 1
#define CMD_MEM_WRT_INVALIDATE 0x0010 /* BIT_4 */
#define PCI_COMMAND_REGISTER PCIR_COMMAND
typedef uint64_t u64;
typedef uint32_t u32;
typedef uint16_t u16;
typedef uint8_t u8;
typedef int64_t s64;
typedef int32_t s32;
typedef int16_t s16;
typedef int8_t s8;
#define __le16 u16
#define __le32 u32
#define __le64 u64
#if __FreeBSD_version < 800000
#if defined(__i386__) || defined(__amd64__)
#define mb() __asm volatile("mfence" ::: "memory")
#define wmb() __asm volatile("sfence" ::: "memory")
#define rmb() __asm volatile("lfence" ::: "memory")
#else
#define mb()
#define rmb()
#define wmb()
#endif
#endif /*__FreeBSD_version < 800000 */
#ifdef INVARIANTS
#define ASSERT_CTX_LOCK_HELD(hw) (sx_assert(iflib_ctx_lock_get(((struct e1000_osdep *)hw->back)->ctx), SX_XLOCKED))
#else
#define ASSERT_CTX_LOCK_HELD(hw)
#endif
#if defined(__i386__) || defined(__amd64__)
static __inline
void prefetch(void *x)
{
__asm volatile("prefetcht0 %0" :: "m" (*(unsigned long *)x));
}
#else
#define prefetch(x)
#endif
struct e1000_osdep
{
bus_space_tag_t mem_bus_space_tag;
bus_space_handle_t mem_bus_space_handle;
bus_space_tag_t io_bus_space_tag;
bus_space_handle_t io_bus_space_handle;
bus_space_tag_t flash_bus_space_tag;
bus_space_handle_t flash_bus_space_handle;
device_t dev;
if_ctx_t ctx;
};
#define E1000_REGISTER(hw, reg) (((hw)->mac.type >= e1000_82543) \
? reg : e1000_translate_register_82542(reg))
#define E1000_WRITE_FLUSH(a) E1000_READ_REG(a, E1000_STATUS)
/* Read from an absolute offset in the adapter's memory space */
#define E1000_READ_OFFSET(hw, offset) \
bus_space_read_4(((struct e1000_osdep *)(hw)->back)->mem_bus_space_tag, \
((struct e1000_osdep *)(hw)->back)->mem_bus_space_handle, offset)
/* Write to an absolute offset in the adapter's memory space */
#define E1000_WRITE_OFFSET(hw, offset, value) \
bus_space_write_4(((struct e1000_osdep *)(hw)->back)->mem_bus_space_tag, \
((struct e1000_osdep *)(hw)->back)->mem_bus_space_handle, offset, value)
/* Register READ/WRITE macros */
#define E1000_READ_REG(hw, reg) \
bus_space_read_4(((struct e1000_osdep *)(hw)->back)->mem_bus_space_tag, \
((struct e1000_osdep *)(hw)->back)->mem_bus_space_handle, \
E1000_REGISTER(hw, reg))
#define E1000_WRITE_REG(hw, reg, value) \
bus_space_write_4(((struct e1000_osdep *)(hw)->back)->mem_bus_space_tag, \
((struct e1000_osdep *)(hw)->back)->mem_bus_space_handle, \
E1000_REGISTER(hw, reg), value)
#define E1000_READ_REG_ARRAY(hw, reg, index) \
bus_space_read_4(((struct e1000_osdep *)(hw)->back)->mem_bus_space_tag, \
((struct e1000_osdep *)(hw)->back)->mem_bus_space_handle, \
E1000_REGISTER(hw, reg) + ((index)<< 2))
#define E1000_WRITE_REG_ARRAY(hw, reg, index, value) \
bus_space_write_4(((struct e1000_osdep *)(hw)->back)->mem_bus_space_tag, \
((struct e1000_osdep *)(hw)->back)->mem_bus_space_handle, \
E1000_REGISTER(hw, reg) + ((index)<< 2), value)
#define E1000_READ_REG_ARRAY_DWORD E1000_READ_REG_ARRAY
#define E1000_WRITE_REG_ARRAY_DWORD E1000_WRITE_REG_ARRAY
#define E1000_READ_REG_ARRAY_BYTE(hw, reg, index) \
bus_space_read_1(((struct e1000_osdep *)(hw)->back)->mem_bus_space_tag, \
((struct e1000_osdep *)(hw)->back)->mem_bus_space_handle, \
E1000_REGISTER(hw, reg) + index)
#define E1000_WRITE_REG_ARRAY_BYTE(hw, reg, index, value) \
bus_space_write_1(((struct e1000_osdep *)(hw)->back)->mem_bus_space_tag, \
((struct e1000_osdep *)(hw)->back)->mem_bus_space_handle, \
E1000_REGISTER(hw, reg) + index, value)
#define E1000_WRITE_REG_ARRAY_WORD(hw, reg, index, value) \
bus_space_write_2(((struct e1000_osdep *)(hw)->back)->mem_bus_space_tag, \
((struct e1000_osdep *)(hw)->back)->mem_bus_space_handle, \
E1000_REGISTER(hw, reg) + (index << 1), value)
#define E1000_WRITE_REG_IO(hw, reg, value) do {\
bus_space_write_4(((struct e1000_osdep *)(hw)->back)->io_bus_space_tag, \
((struct e1000_osdep *)(hw)->back)->io_bus_space_handle, \
(hw)->io_base, reg); \
bus_space_write_4(((struct e1000_osdep *)(hw)->back)->io_bus_space_tag, \
((struct e1000_osdep *)(hw)->back)->io_bus_space_handle, \
(hw)->io_base + 4, value); } while (0)
#define E1000_READ_FLASH_REG(hw, reg) \
bus_space_read_4(((struct e1000_osdep *)(hw)->back)->flash_bus_space_tag, \
((struct e1000_osdep *)(hw)->back)->flash_bus_space_handle, reg)
#define E1000_READ_FLASH_REG16(hw, reg) \
bus_space_read_2(((struct e1000_osdep *)(hw)->back)->flash_bus_space_tag, \
((struct e1000_osdep *)(hw)->back)->flash_bus_space_handle, reg)
#define E1000_WRITE_FLASH_REG(hw, reg, value) \
bus_space_write_4(((struct e1000_osdep *)(hw)->back)->flash_bus_space_tag, \
((struct e1000_osdep *)(hw)->back)->flash_bus_space_handle, reg, value)
#define E1000_WRITE_FLASH_REG16(hw, reg, value) \
bus_space_write_2(((struct e1000_osdep *)(hw)->back)->flash_bus_space_tag, \
((struct e1000_osdep *)(hw)->back)->flash_bus_space_handle, reg, value)
#if defined(INVARIANTS)
#include <sys/proc.h>
#define ASSERT_NO_LOCKS() \
do { \
int unknown_locks = curthread->td_locks - mtx_owned(&Giant); \
if (unknown_locks > 0) { \
WITNESS_WARN(WARN_GIANTOK|WARN_SLEEPOK|WARN_PANIC, NULL, "unexpected non-sleepable lock"); \
} \
MPASS(curthread->td_rw_rlocks == 0); \
MPASS(curthread->td_lk_slocks == 0); \
} while (0)
#else
#define ASSERT_NO_LOCKS()
#endif
#endif /* _FREEBSD_OS_H_ */