コード例 #1
0
ファイル: siena.c プロジェクト: AlexShiLucky/linux
static int siena_mcdi_poll_reboot(struct efx_nic *efx)
{
	struct siena_nic_data *nic_data = efx->nic_data;
	unsigned int addr = FR_CZ_MC_TREG_SMEM + MCDI_STATUS(efx);
	efx_dword_t reg;
	u32 value;

	efx_readd(efx, &reg, addr);
	value = EFX_DWORD_FIELD(reg, EFX_DWORD_0);

	if (value == 0)
		return 0;

	EFX_ZERO_DWORD(reg);
	efx_writed(efx, &reg, addr);

	/* MAC statistics have been cleared on the NIC; clear the local
	 * copies that we update with efx_update_diff_stat().
	 */
	nic_data->stats[SIENA_STAT_tx_good_bytes] = 0;
	nic_data->stats[SIENA_STAT_rx_good_bytes] = 0;

	if (value == MC_STATUS_DWORD_ASSERT)
		return -EINTR;
	else
		return -EIO;
}
コード例 #2
0
inline void falcon_irq_ack_a1(struct efx_nic *efx)
{
	efx_dword_t reg;

	EFX_POPULATE_DWORD_1(reg, FRF_AA_INT_ACK_KER_FIELD, 0xb7eb7e);
	efx_writed(efx, &reg, FR_AA_INT_ACK_KER);
	efx_readd(efx, &reg, FR_AA_WORK_AROUND_BROKEN_PCI_READS);
}
コード例 #3
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 #4
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 #5
0
ファイル: mcdi.c プロジェクト: LittleForker/linux-2.6
/* Test and clear MC-rebooted flag for this port/function */
int efx_mcdi_poll_reboot(struct efx_nic *efx)
{
	unsigned int addr = FR_CZ_MC_TREG_SMEM + MCDI_REBOOT_FLAG(efx);
	efx_dword_t reg;
	uint32_t value;

	if (efx_nic_rev(efx) < EFX_REV_SIENA_A0)
		return false;

	efx_readd(efx, &reg, addr);
	value = EFX_DWORD_FIELD(reg, EFX_DWORD_0);

	if (value == 0)
		return 0;

	EFX_ZERO_DWORD(reg);
	efx_writed(efx, &reg, addr);

	if (value == MC_STATUS_DWORD_ASSERT)
		return -EINTR;
	else
		return -EIO;
}