aboutsummaryrefslogtreecommitdiff
path: root/sys/dev/sfxge/common/efx_intr.c
diff options
context:
space:
mode:
Diffstat (limited to 'sys/dev/sfxge/common/efx_intr.c')
-rw-r--r--sys/dev/sfxge/common/efx_intr.c354
1 files changed, 354 insertions, 0 deletions
diff --git a/sys/dev/sfxge/common/efx_intr.c b/sys/dev/sfxge/common/efx_intr.c
new file mode 100644
index 000000000000..77780b1c8b5c
--- /dev/null
+++ b/sys/dev/sfxge/common/efx_intr.c
@@ -0,0 +1,354 @@
+/*-
+ * Copyright 2007-2009 Solarflare Communications Inc. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#include "efsys.h"
+#include "efx.h"
+#include "efx_types.h"
+#include "efx_regs.h"
+#include "efx_impl.h"
+
+ __checkReturn int
+efx_intr_init(
+ __in efx_nic_t *enp,
+ __in efx_intr_type_t type,
+ __in efsys_mem_t *esmp)
+{
+ efx_intr_t *eip = &(enp->en_intr);
+ efx_oword_t oword;
+ int rc;
+
+ EFSYS_ASSERT3U(enp->en_magic, ==, EFX_NIC_MAGIC);
+ EFSYS_ASSERT3U(enp->en_mod_flags, &, EFX_MOD_NIC);
+
+ if (enp->en_mod_flags & EFX_MOD_INTR) {
+ rc = EINVAL;
+ goto fail1;
+ }
+
+ enp->en_mod_flags |= EFX_MOD_INTR;
+
+ eip->ei_type = type;
+ eip->ei_esmp = esmp;
+
+ /*
+ * bug17213 workaround.
+ *
+ * Under legacy interrupts, don't share a level between fatal
+ * interrupts and event queue interrupts. Under MSI-X, they
+ * must share, or we won't get an interrupt.
+ */
+ if (enp->en_family == EFX_FAMILY_SIENA &&
+ eip->ei_type == EFX_INTR_LINE)
+ eip->ei_level = 0x1f;
+ else
+ eip->ei_level = 0;
+
+ /* Enable all the genuinely fatal interrupts */
+ EFX_SET_OWORD(oword);
+ EFX_SET_OWORD_FIELD(oword, FRF_AZ_ILL_ADR_INT_KER_EN, 0);
+ EFX_SET_OWORD_FIELD(oword, FRF_AZ_RBUF_OWN_INT_KER_EN, 0);
+ EFX_SET_OWORD_FIELD(oword, FRF_AZ_TBUF_OWN_INT_KER_EN, 0);
+ if (enp->en_family >= EFX_FAMILY_SIENA)
+ EFX_SET_OWORD_FIELD(oword, FRF_CZ_SRAM_PERR_INT_P_KER_EN, 0);
+ EFX_BAR_WRITEO(enp, FR_AZ_FATAL_INTR_REG_KER, &oword);
+
+ /* Set up the interrupt address register */
+ EFX_POPULATE_OWORD_3(oword,
+ FRF_AZ_NORM_INT_VEC_DIS_KER, (type == EFX_INTR_MESSAGE) ? 1 : 0,
+ FRF_AZ_INT_ADR_KER_DW0, EFSYS_MEM_ADDR(esmp) & 0xffffffff,
+ FRF_AZ_INT_ADR_KER_DW1, EFSYS_MEM_ADDR(esmp) >> 32);
+ EFX_BAR_WRITEO(enp, FR_AZ_INT_ADR_REG_KER, &oword);
+
+ return (0);
+
+fail1:
+ EFSYS_PROBE1(fail1, int, rc);
+
+ return (rc);
+}
+
+ void
+efx_intr_enable(
+ __in efx_nic_t *enp)
+{
+ efx_intr_t *eip = &(enp->en_intr);
+ efx_oword_t oword;
+
+ EFSYS_ASSERT3U(enp->en_magic, ==, EFX_NIC_MAGIC);
+ EFSYS_ASSERT3U(enp->en_mod_flags, &, EFX_MOD_INTR);
+
+ EFX_BAR_READO(enp, FR_AZ_INT_EN_REG_KER, &oword);
+
+ EFX_SET_OWORD_FIELD(oword, FRF_AZ_KER_INT_LEVE_SEL, eip->ei_level);
+ EFX_SET_OWORD_FIELD(oword, FRF_AZ_DRV_INT_EN_KER, 1);
+ EFX_BAR_WRITEO(enp, FR_AZ_INT_EN_REG_KER, &oword);
+}
+
+ void
+efx_intr_disable(
+ __in efx_nic_t *enp)
+{
+ efx_oword_t oword;
+
+ EFSYS_ASSERT3U(enp->en_magic, ==, EFX_NIC_MAGIC);
+ EFSYS_ASSERT3U(enp->en_mod_flags, &, EFX_MOD_INTR);
+
+ EFX_BAR_READO(enp, FR_AZ_INT_EN_REG_KER, &oword);
+ EFX_SET_OWORD_FIELD(oword, FRF_AZ_DRV_INT_EN_KER, 0);
+ EFX_BAR_WRITEO(enp, FR_AZ_INT_EN_REG_KER, &oword);
+
+ EFSYS_SPIN(10);
+}
+
+ void
+efx_intr_disable_unlocked(
+ __in efx_nic_t *enp)
+{
+ efx_oword_t oword;
+
+ EFSYS_ASSERT3U(enp->en_magic, ==, EFX_NIC_MAGIC);
+ EFSYS_ASSERT3U(enp->en_mod_flags, &, EFX_MOD_INTR);
+
+ EFSYS_BAR_READO(enp->en_esbp, FR_AZ_INT_EN_REG_KER_OFST,
+ &oword, B_FALSE);
+ EFX_SET_OWORD_FIELD(oword, FRF_AZ_DRV_INT_EN_KER, 0);
+ EFSYS_BAR_WRITEO(enp->en_esbp, FR_AZ_INT_EN_REG_KER_OFST,
+ &oword, B_FALSE);
+}
+
+ __checkReturn int
+efx_intr_trigger(
+ __in efx_nic_t *enp,
+ __in unsigned int level)
+{
+ efx_intr_t *eip = &(enp->en_intr);
+ efx_oword_t oword;
+ unsigned int count;
+ uint32_t sel;
+ int rc;
+
+ EFSYS_ASSERT3U(enp->en_magic, ==, EFX_NIC_MAGIC);
+ EFSYS_ASSERT3U(enp->en_mod_flags, &, EFX_MOD_INTR);
+
+ /* bug16757: No event queues can be initialized */
+ EFSYS_ASSERT(!(enp->en_mod_flags & EFX_MOD_EV));
+
+ switch (enp->en_family) {
+ case EFX_FAMILY_FALCON:
+ if (level > EFX_NINTR_FALCON) {
+ rc = EINVAL;
+ goto fail1;
+ }
+ break;
+
+ case EFX_FAMILY_SIENA:
+ if (level > EFX_NINTR_SIENA) {
+ rc = EINVAL;
+ goto fail1;
+ }
+ break;
+
+ default:
+ EFSYS_ASSERT(B_FALSE);
+ break;
+ }
+
+ if (level > EFX_MASK32(FRF_AZ_KER_INT_LEVE_SEL))
+ return (ENOTSUP); /* avoid EFSYS_PROBE() */
+
+ sel = level;
+
+ /* Trigger a test interrupt */
+ EFX_BAR_READO(enp, FR_AZ_INT_EN_REG_KER, &oword);
+ EFX_SET_OWORD_FIELD(oword, FRF_AZ_KER_INT_LEVE_SEL, sel);
+ EFX_SET_OWORD_FIELD(oword, FRF_AZ_KER_INT_KER, 1);
+ EFX_BAR_WRITEO(enp, FR_AZ_INT_EN_REG_KER, &oword);
+
+ /*
+ * Wait up to 100ms for the interrupt to be raised before restoring
+ * KER_INT_LEVE_SEL. Ignore a failure to raise (the caller will
+ * observe this soon enough anyway), but always reset KER_INT_LEVE_SEL
+ */
+ count = 0;
+ do {
+ EFSYS_SPIN(100); /* 100us */
+
+ EFX_BAR_READO(enp, FR_AZ_INT_EN_REG_KER, &oword);
+ } while (EFX_OWORD_FIELD(oword, FRF_AZ_KER_INT_KER) && ++count < 1000);
+
+ EFX_SET_OWORD_FIELD(oword, FRF_AZ_KER_INT_LEVE_SEL, eip->ei_level);
+ EFX_BAR_WRITEO(enp, FR_AZ_INT_EN_REG_KER, &oword);
+
+ return (0);
+
+fail1:
+ EFSYS_PROBE1(fail1, int, rc);
+
+ return (rc);
+}
+
+static __checkReturn boolean_t
+efx_intr_check_fatal(
+ __in efx_nic_t *enp)
+{
+ efx_intr_t *eip = &(enp->en_intr);
+ efsys_mem_t *esmp = eip->ei_esmp;
+ efx_oword_t oword;
+
+ /* Read the syndrome */
+ EFSYS_MEM_READO(esmp, 0, &oword);
+
+ if (EFX_OWORD_FIELD(oword, FSF_AZ_NET_IVEC_FATAL_INT) != 0) {
+ EFSYS_PROBE(fatal);
+
+ /* Clear the fatal interrupt condition */
+ EFX_SET_OWORD_FIELD(oword, FSF_AZ_NET_IVEC_FATAL_INT, 0);
+ EFSYS_MEM_WRITEO(esmp, 0, &oword);
+
+ return (B_TRUE);
+ }
+
+ return (B_FALSE);
+}
+
+ void
+efx_intr_status_line(
+ __in efx_nic_t *enp,
+ __out boolean_t *fatalp,
+ __out uint32_t *qmaskp)
+{
+ efx_intr_t *eip = &(enp->en_intr);
+ efx_dword_t dword;
+
+ EFSYS_ASSERT3U(enp->en_magic, ==, EFX_NIC_MAGIC);
+ EFSYS_ASSERT3U(enp->en_mod_flags, &, EFX_MOD_INTR);
+
+ /*
+ * Read the queue mask and implicitly acknowledge the
+ * interrupt.
+ */
+ EFX_BAR_READD(enp, FR_BZ_INT_ISR0_REG, &dword, B_FALSE);
+ *qmaskp = EFX_DWORD_FIELD(dword, EFX_DWORD_0);
+
+ EFSYS_PROBE1(qmask, uint32_t, *qmaskp);
+
+ if (*qmaskp & (1U << eip->ei_level))
+ *fatalp = efx_intr_check_fatal(enp);
+ else
+ *fatalp = B_FALSE;
+}
+
+ void
+efx_intr_status_message(
+ __in efx_nic_t *enp,
+ __in unsigned int message,
+ __out boolean_t *fatalp)
+{
+ efx_intr_t *eip = &(enp->en_intr);
+
+ EFSYS_ASSERT3U(enp->en_magic, ==, EFX_NIC_MAGIC);
+ EFSYS_ASSERT3U(enp->en_mod_flags, &, EFX_MOD_INTR);
+
+ if (message == eip->ei_level)
+ *fatalp = efx_intr_check_fatal(enp);
+ else
+ *fatalp = B_FALSE;
+}
+
+ void
+efx_intr_fatal(
+ __in efx_nic_t *enp)
+{
+#if EFSYS_OPT_DECODE_INTR_FATAL
+ efx_oword_t fatal;
+ efx_oword_t mem_per;
+
+ EFSYS_ASSERT3U(enp->en_magic, ==, EFX_NIC_MAGIC);
+ EFSYS_ASSERT3U(enp->en_mod_flags, &, EFX_MOD_INTR);
+
+ EFX_BAR_READO(enp, FR_AZ_FATAL_INTR_REG_KER, &fatal);
+ EFX_ZERO_OWORD(mem_per);
+
+ if (EFX_OWORD_FIELD(fatal, FRF_AZ_SRM_PERR_INT_KER) != 0 ||
+ EFX_OWORD_FIELD(fatal, FRF_AZ_MEM_PERR_INT_KER) != 0)
+ EFX_BAR_READO(enp, FR_AZ_MEM_STAT_REG, &mem_per);
+
+ if (EFX_OWORD_FIELD(fatal, FRF_AZ_SRAM_OOB_INT_KER) != 0)
+ EFSYS_ERR(enp->en_esip, EFX_ERR_SRAM_OOB, 0, 0);
+
+ if (EFX_OWORD_FIELD(fatal, FRF_AZ_BUFID_DC_OOB_INT_KER) != 0)
+ EFSYS_ERR(enp->en_esip, EFX_ERR_BUFID_DC_OOB, 0, 0);
+
+ if (EFX_OWORD_FIELD(fatal, FRF_AZ_MEM_PERR_INT_KER) != 0)
+ EFSYS_ERR(enp->en_esip, EFX_ERR_MEM_PERR,
+ EFX_OWORD_FIELD(mem_per, EFX_DWORD_0),
+ EFX_OWORD_FIELD(mem_per, EFX_DWORD_1));
+
+ if (EFX_OWORD_FIELD(fatal, FRF_AZ_RBUF_OWN_INT_KER) != 0)
+ EFSYS_ERR(enp->en_esip, EFX_ERR_RBUF_OWN, 0, 0);
+
+ if (EFX_OWORD_FIELD(fatal, FRF_AZ_TBUF_OWN_INT_KER) != 0)
+ EFSYS_ERR(enp->en_esip, EFX_ERR_TBUF_OWN, 0, 0);
+
+ if (EFX_OWORD_FIELD(fatal, FRF_AZ_RDESCQ_OWN_INT_KER) != 0)
+ EFSYS_ERR(enp->en_esip, EFX_ERR_RDESQ_OWN, 0, 0);
+
+ if (EFX_OWORD_FIELD(fatal, FRF_AZ_TDESCQ_OWN_INT_KER) != 0)
+ EFSYS_ERR(enp->en_esip, EFX_ERR_TDESQ_OWN, 0, 0);
+
+ if (EFX_OWORD_FIELD(fatal, FRF_AZ_EVQ_OWN_INT_KER) != 0)
+ EFSYS_ERR(enp->en_esip, EFX_ERR_EVQ_OWN, 0, 0);
+
+ if (EFX_OWORD_FIELD(fatal, FRF_AZ_EVF_OFLO_INT_KER) != 0)
+ EFSYS_ERR(enp->en_esip, EFX_ERR_EVFF_OFLO, 0, 0);
+
+ if (EFX_OWORD_FIELD(fatal, FRF_AZ_ILL_ADR_INT_KER) != 0)
+ EFSYS_ERR(enp->en_esip, EFX_ERR_ILL_ADDR, 0, 0);
+
+ if (EFX_OWORD_FIELD(fatal, FRF_AZ_SRM_PERR_INT_KER) != 0)
+ EFSYS_ERR(enp->en_esip, EFX_ERR_SRAM_PERR,
+ EFX_OWORD_FIELD(mem_per, EFX_DWORD_0),
+ EFX_OWORD_FIELD(mem_per, EFX_DWORD_1));
+#else
+ EFSYS_ASSERT(0);
+#endif
+}
+
+ void
+efx_intr_fini(
+ __in efx_nic_t *enp)
+{
+ efx_oword_t oword;
+
+ EFSYS_ASSERT3U(enp->en_magic, ==, EFX_NIC_MAGIC);
+ EFSYS_ASSERT3U(enp->en_mod_flags, &, EFX_MOD_NIC);
+ EFSYS_ASSERT3U(enp->en_mod_flags, &, EFX_MOD_INTR);
+
+ /* Clear the interrupt address register */
+ EFX_ZERO_OWORD(oword);
+ EFX_BAR_WRITEO(enp, FR_AZ_INT_ADR_REG_KER, &oword);
+
+ enp->en_mod_flags &= ~EFX_MOD_INTR;
+}