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cxgbei: Disable ISO for -SO cards without external memory.

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Reported by:	Jithesh Arakkan @ Chelsio
Sponsored by:	Chelsio Communications
This commit is contained in:
John Baldwin 2021-09-13 09:57:54 -07:00
parent db2ba218d9
commit 9b1bb0aee6
1 changed files with 16 additions and 1 deletions
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17
sys/dev/cxgbe/cxgbei/icl_cxgbei.c
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@ -95,6 +95,7 @@ __FBSDID("$FreeBSD$");
#include <cam/scsi/scsi_message.h>
#include "common/common.h"
#include "common/t4_regs.h"
#include "common/t4_tcb.h"
#include "tom/t4_tom.h"
#include "cxgbei.h"
@ -707,6 +708,19 @@ find_offload_adapter(struct adapter *sc, void *arg)
INP_WUNLOCK(inp);
}
static bool
is_memfree(struct adapter *sc)
{
uint32_t em;
em = t4_read_reg(sc, A_MA_TARGET_MEM_ENABLE);
if ((em & F_EXT_MEM_ENABLE) != 0)
return (false);
if (is_t5(sc) && (em & F_EXT_MEM1_ENABLE) != 0)
return (false);
return (true);
}
/* XXXNP: move this to t4_tom. */
static void
send_iscsi_flowc_wr(struct adapter *sc, struct toepcb *toep, int maxlen)
@ -863,7 +877,8 @@ icl_cxgbei_conn_handoff(struct icl_conn *ic, int fd)
if (ic->ic_data_crc32c)
icc->ulp_submode |= ULP_CRC_DATA;
if (icc->sc->tt.iso && chip_id(icc->sc) >= CHELSIO_T5) {
if (icc->sc->tt.iso && chip_id(icc->sc) >= CHELSIO_T5 &&
!is_memfree(icc->sc)) {
max_iso_pdus = CXGBEI_MAX_ISO_PAYLOAD /
max_tx_pdu_len;
ic->ic_hw_isomax = max_iso_pdus *