コード例 #1
0
ファイル: mcdi.c プロジェクト: LittleForker/linux-2.6
static void efx_mcdi_copyin(struct efx_nic *efx, unsigned cmd,
			    const u8 *inbuf, size_t inlen)
{
	struct efx_mcdi_iface *mcdi = efx_mcdi(efx);
	unsigned pdu = FR_CZ_MC_TREG_SMEM + MCDI_PDU(efx);
	unsigned doorbell = FR_CZ_MC_TREG_SMEM + MCDI_DOORBELL(efx);
	unsigned int i;
	efx_dword_t hdr;
	u32 xflags, seqno;

	BUG_ON(atomic_read(&mcdi->state) == MCDI_STATE_QUIESCENT);
	BUG_ON(inlen & 3 || inlen >= 0x100);

	seqno = mcdi->seqno & SEQ_MASK;
	xflags = 0;
	if (mcdi->mode == MCDI_MODE_EVENTS)
		xflags |= MCDI_HEADER_XFLAGS_EVREQ;

	EFX_POPULATE_DWORD_6(hdr,
			     MCDI_HEADER_RESPONSE, 0,
			     MCDI_HEADER_RESYNC, 1,
			     MCDI_HEADER_CODE, cmd,
			     MCDI_HEADER_DATALEN, inlen,
			     MCDI_HEADER_SEQ, seqno,
			     MCDI_HEADER_XFLAGS, xflags);

	efx_writed(efx, &hdr, pdu);

	for (i = 0; i < inlen; i += 4) {
		_efx_writed(efx, *((__le32 *)(inbuf + i)), pdu + 4 + i);
		/* use wmb() within loop to inhibit write combining */
		wmb();
	}

	/* ring the doorbell with a distinctive value */
	_efx_writed(efx, (__force __le32) 0x45789abc, doorbell);
	wmb();
}
コード例 #2
0
ファイル: siena.c プロジェクト: AlexShiLucky/linux
static void siena_mcdi_request(struct efx_nic *efx,
			       const efx_dword_t *hdr, size_t hdr_len,
			       const efx_dword_t *sdu, size_t sdu_len)
{
	unsigned pdu = FR_CZ_MC_TREG_SMEM + MCDI_PDU(efx);
	unsigned doorbell = FR_CZ_MC_TREG_SMEM + MCDI_DOORBELL(efx);
	unsigned int i;
	unsigned int inlen_dw = DIV_ROUND_UP(sdu_len, 4);

	EFX_WARN_ON_PARANOID(hdr_len != 4);

	efx_writed(efx, hdr, pdu);

	for (i = 0; i < inlen_dw; i++)
		efx_writed(efx, &sdu[i], pdu + hdr_len + 4 * i);

	/* Ensure the request is written out before the doorbell */
	wmb();

	/* ring the doorbell with a distinctive value */
	_efx_writed(efx, (__force __le32) 0x45789abc, doorbell);
}
コード例 #3
0
ファイル: siena.c プロジェクト: AlexShiLucky/linux
static void siena_ptp_write_host_time(struct efx_nic *efx, u32 host_time)
{
	_efx_writed(efx, cpu_to_le32(host_time),
		    FR_CZ_MC_TREG_SMEM + MC_SMEM_P0_PTP_TIME_OFST);
}