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Differential D12101 Diff 32654 sys/dev/e1000/e1000_osdep.h

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sys/dev/e1000/e1000_osdep.h

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#ifndef _FREEBSD_OS_H_ #ifndef _FREEBSD_OS_H_
#define _FREEBSD_OS_H_ #define _FREEBSD_OS_H_
#include <sys/types.h> #include <sys/types.h>
#include <sys/param.h> #include <sys/param.h>
#include <sys/systm.h> #include <sys/systm.h>
#include <sys/proc.h>
#include <sys/lock.h> #include <sys/lock.h>
#include <sys/mutex.h> #include <sys/mutex.h>
#include <sys/mbuf.h> #include <sys/mbuf.h>
#include <sys/protosw.h> #include <sys/protosw.h>
#include <sys/socket.h> #include <sys/socket.h>
#include <sys/malloc.h> #include <sys/malloc.h>
#include <sys/kernel.h> #include <sys/kernel.h>
#include <sys/bus.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 <machine/bus.h>
#include <sys/rman.h> #include <sys/rman.h>
#include <machine/resource.h> #include <machine/resource.h>
#include <vm/vm.h> #include <vm/vm.h>
#include <vm/pmap.h> #include <vm/pmap.h>
#include <machine/clock.h> #include <machine/clock.h>
#include <dev/pci/pcivar.h> #include <dev/pci/pcivar.h>
#include <dev/pci/pcireg.h> #include <dev/pci/pcireg.h>
#define ASSERT(x) if(!(x)) panic("EM: x") #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)));
}
}
extern int cold;
#define usec_delay(x) DELAY(x) static inline void
safe_pause_us(int x) {
if (cold) {
hselaskyUnsubmitted
Not Done
Inline Actions

These cold checks are wrong. Please remove. Pause() already does this check properly.

hselasky: These cold checks are wrong. Please remove. Pause() already does this check properly.
DELAY(x);
} else {
pause("e1000_delay", max(1, x/(1000000/hz)));
hselaskyUnsubmitted
Not Done
Inline Actions

Why not use pause_mtx() ?

hselasky: Why not use pause_mtx() ?
gallatinUnsubmitted
Not Done
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Because the driver has no idea what lock objects are held by callers to ifioctl. And just dropping a mutex is horrifically unsafe anyway.

gallatin: Because the driver has no idea what lock objects are held by callers to ifioctl. And just…
}
}
static inline void
safe_pause_ms(int x) {
if (cold) {
hselaskyUnsubmitted
Not Done
Inline Actions

These cold checks are wrong. Please remove. Pause() already does this check properly.

hselasky: These cold checks are wrong. Please remove. Pause() already does this check properly.
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 usec_delay_irq(x) usec_delay(x)
#define msec_delay(x) DELAY(1000*(x)) #define msec_delay(x) safe_pause_ms(x)
#define msec_delay_irq(x) DELAY(1000*(x)) #define msec_delay_irq(x) msec_delay(x)
rstoneUnsubmitted
Not Done
Inline Actions

Is this correct? "msec_delay_irq()" implies to me a delay being used in interrupt context, where sleeping is not safe

rstone: Is this correct? "msec_delay_irq()" implies to me a delay being used in interrupt context…
/* Enable/disable debugging statements in shared code */ /* Enable/disable debugging statements in shared code */
#define DBG 0 #define DBG 0
#define DEBUGOUT(...) \ #define DEBUGOUT(...) \
do { if (DBG) printf(__VA_ARGS__); } while (0) do { if (DBG) printf(__VA_ARGS__); } while (0)
#define DEBUGOUT1(...) DEBUGOUT(__VA_ARGS__) #define DEBUGOUT1(...) DEBUGOUT(__VA_ARGS__)
#define DEBUGOUT2(...) DEBUGOUT(__VA_ARGS__) #define DEBUGOUT2(...) DEBUGOUT(__VA_ARGS__)
#define DEBUGOUT3(...) DEBUGOUT(__VA_ARGS__) #define DEBUGOUT3(...) DEBUGOUT(__VA_ARGS__)
#define DEBUGOUT7(...) DEBUGOUT(__VA_ARGS__) #define DEBUGOUT7(...) DEBUGOUT(__VA_ARGS__)
#define DEBUGFUNC(F) DEBUGOUT(F "\n") #define DEBUGFUNC(F) DEBUGOUT(F "\n")
#define STATIC static #define STATIC static
#define FALSE 0 #define FALSE 0
#define TRUE 1 #define TRUE 1
#define CMD_MEM_WRT_INVALIDATE 0x0010 /* BIT_4 */ #define CMD_MEM_WRT_INVALIDATE 0x0010 /* BIT_4 */
#define PCI_COMMAND_REGISTER PCIR_COMMAND #define PCI_COMMAND_REGISTER PCIR_COMMAND
/* Mutex used in the shared code */
#define E1000_MUTEX struct mtx
#define E1000_MUTEX_INIT(mutex) mtx_init((mutex), #mutex, \
MTX_NETWORK_LOCK, \
MTX_DEF | MTX_DUPOK)
#define E1000_MUTEX_DESTROY(mutex) mtx_destroy(mutex)
#define E1000_MUTEX_LOCK(mutex) mtx_lock(mutex)
#define E1000_MUTEX_TRYLOCK(mutex) mtx_trylock(mutex)
#define E1000_MUTEX_UNLOCK(mutex) mtx_unlock(mutex)
typedef uint64_t u64; typedef uint64_t u64;
typedef uint32_t u32; typedef uint32_t u32;
typedef uint16_t u16; typedef uint16_t u16;
typedef uint8_t u8; typedef uint8_t u8;
typedef int64_t s64; typedef int64_t s64;
typedef int32_t s32; typedef int32_t s32;
typedef int16_t s16; typedef int16_t s16;
typedef int8_t s8; typedef int8_t s8;
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#define rmb() __asm volatile("lfence" ::: "memory") #define rmb() __asm volatile("lfence" ::: "memory")
#else #else
#define mb() #define mb()
#define rmb() #define rmb()
#define wmb() #define wmb()
#endif #endif
#endif /*__FreeBSD_version < 800000 */ #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__) #if defined(__i386__) || defined(__amd64__)
static __inline static __inline
void prefetch(void *x) void prefetch(void *x)
{ {
__asm volatile("prefetcht0 %0" :: "m" (*(unsigned long *)x)); __asm volatile("prefetcht0 %0" :: "m" (*(unsigned long *)x));
} }
#else #else
#define prefetch(x) #define prefetch(x)
#endif #endif
struct e1000_osdep struct e1000_osdep
{ {
bus_space_tag_t mem_bus_space_tag; bus_space_tag_t mem_bus_space_tag;
bus_space_handle_t mem_bus_space_handle; bus_space_handle_t mem_bus_space_handle;
bus_space_tag_t io_bus_space_tag; bus_space_tag_t io_bus_space_tag;
bus_space_handle_t io_bus_space_handle; bus_space_handle_t io_bus_space_handle;
bus_space_tag_t flash_bus_space_tag; bus_space_tag_t flash_bus_space_tag;
bus_space_handle_t flash_bus_space_handle; bus_space_handle_t flash_bus_space_handle;
device_t dev; device_t dev;
if_ctx_t ctx;
}; };
#define E1000_REGISTER(hw, reg) (((hw)->mac.type >= e1000_82543) \ #define E1000_REGISTER(hw, reg) (((hw)->mac.type >= e1000_82543) \
? reg : e1000_translate_register_82542(reg)) ? reg : e1000_translate_register_82542(reg))
#define E1000_WRITE_FLUSH(a) E1000_READ_REG(a, E1000_STATUS) #define E1000_WRITE_FLUSH(a) E1000_READ_REG(a, E1000_STATUS)
/* Read from an absolute offset in the adapter's memory space */ /* Read from an absolute offset in the adapter's memory space */
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#define E1000_WRITE_FLASH_REG(hw, reg, value) \ #define E1000_WRITE_FLASH_REG(hw, reg, value) \
bus_space_write_4(((struct e1000_osdep *)(hw)->back)->flash_bus_space_tag, \ bus_space_write_4(((struct e1000_osdep *)(hw)->back)->flash_bus_space_tag, \
((struct e1000_osdep *)(hw)->back)->flash_bus_space_handle, reg, value) ((struct e1000_osdep *)(hw)->back)->flash_bus_space_handle, reg, value)
#define E1000_WRITE_FLASH_REG16(hw, reg, value) \ #define E1000_WRITE_FLASH_REG16(hw, reg, value) \
bus_space_write_2(((struct e1000_osdep *)(hw)->back)->flash_bus_space_tag, \ bus_space_write_2(((struct e1000_osdep *)(hw)->back)->flash_bus_space_tag, \
((struct e1000_osdep *)(hw)->back)->flash_bus_space_handle, reg, value) ((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_ */ #endif /* _FREEBSD_OS_H_ */