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[thunderx] Replace uses of userptr_t with direct pointer dereferences

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Signed-off-by: Michael Brown <mcb30@ipxe.org>
This commit is contained in:
Michael Brown
2025-04-24 13:01:03 +01:00
parent 8ac03b4a73
commit f18c1472e3
2 changed files with 28 additions and 36 deletions
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53
src/drivers/net/thunderx.c
View File

@@ -89,7 +89,7 @@ static __attribute__ (( unused )) void txnic_diag ( struct txnic *vnic ) {
( ( vnic->rq.cons % TXNIC_RQES ) * TXNIC_RQ_STRIDE ),
readq ( vnic->regs + TXNIC_QS_RBDR_HEAD(0) ),
readq ( vnic->regs + TXNIC_QS_RBDR_STATUS0(0) ) );
DBGC ( vnic, "TXNIC %s CQ xxxxx(%05llx)/%05x(%05llx) %08llx:%08llx\n",
DBGC ( vnic, "TXNIC %s CQ xxxxx(%05llx)/%05zx(%05llx) %08llx:%08llx\n",
vnic->name, readq ( vnic->regs + TXNIC_QS_CQ_TAIL(0) ),
( ( vnic->cq.cons % TXNIC_CQES ) * TXNIC_CQ_STRIDE ),
readq ( vnic->regs + TXNIC_QS_CQ_HEAD(0) ),
@@ -184,9 +184,8 @@ static void txnic_destroy_sq ( struct txnic *vnic ) {
* @ret rc Return status code
*/
static int txnic_send ( struct txnic *vnic, struct io_buffer *iobuf ) {
struct txnic_sqe sqe;
struct txnic_sqe *sqe;
unsigned int sq_idx;
size_t offset;
size_t len;
/* Get next send queue entry */
@@ -196,24 +195,21 @@ static int txnic_send ( struct txnic *vnic, struct io_buffer *iobuf ) {
return -ENOBUFS;
}
sq_idx = ( vnic->sq.prod++ % TXNIC_SQES );
offset = ( sq_idx * TXNIC_SQ_STRIDE );
sqe = &vnic->sq.sqe[sq_idx];
/* Populate send descriptor */
len = iob_len ( iobuf );
memset ( &sqe, 0, sizeof ( sqe ) );
sqe.hdr.total = cpu_to_le32 ( ( len >= ETH_ZLEN ) ? len : ETH_ZLEN );
sqe.hdr.subdcnt = ( TXNIC_SQE_SUBDESCS - 1 );
sqe.hdr.flags = TXNIC_SEND_HDR_FLAGS;
sqe.gather.size = cpu_to_le16 ( len );
sqe.gather.flags = TXNIC_SEND_GATHER_FLAGS;
sqe.gather.addr = cpu_to_le64 ( virt_to_bus ( iobuf->data ) );
memset ( sqe, 0, sizeof ( *sqe ) );
sqe->hdr.total = cpu_to_le32 ( ( len >= ETH_ZLEN ) ? len : ETH_ZLEN );
sqe->hdr.subdcnt = ( TXNIC_SQE_SUBDESCS - 1 );
sqe->hdr.flags = TXNIC_SEND_HDR_FLAGS;
sqe->gather.size = cpu_to_le16 ( len );
sqe->gather.flags = TXNIC_SEND_GATHER_FLAGS;
sqe->gather.addr = cpu_to_le64 ( virt_to_bus ( iobuf->data ) );
DBGC2 ( vnic, "TXNIC %s SQE %#03x is [%08lx,%08lx)\n",
vnic->name, sq_idx, virt_to_bus ( iobuf->data ),
( virt_to_bus ( iobuf->data ) + len ) );
/* Copy send descriptor to ring */
copy_to_user ( vnic->sq.sqe, offset, &sqe, sizeof ( sqe ) );
/* Ring doorbell */
wmb();
writeq ( TXNIC_SQE_SUBDESCS, ( vnic->regs + TXNIC_QS_SQ_DOOR(0) ) );
@@ -359,11 +355,10 @@ static void txnic_destroy_rq ( struct txnic *vnic ) {
*/
static void txnic_refill_rq ( struct txnic *vnic ) {
struct io_buffer *iobuf;
struct txnic_rqe rqe;
struct txnic_rqe *rqe;
unsigned int rq_idx;
unsigned int rq_iobuf_idx;
unsigned int refilled = 0;
size_t offset;
/* Refill ring */
while ( ( vnic->rq.prod - vnic->rq.cons ) < TXNIC_RQ_FILL ) {
@@ -377,16 +372,15 @@ static void txnic_refill_rq ( struct txnic *vnic ) {
/* Get next receive descriptor */
rq_idx = ( vnic->rq.prod++ % TXNIC_RQES );
offset = ( rq_idx * TXNIC_RQ_STRIDE );
rqe = &vnic->rq.rqe[rq_idx];
/* Populate receive descriptor */
rqe.rbdre.addr = cpu_to_le64 ( virt_to_bus ( iobuf->data ) );
rqe->rbdre.addr = cpu_to_le64 ( virt_to_bus ( iobuf->data ) );
DBGC2 ( vnic, "TXNIC %s RQE %#03x is [%08lx,%08lx)\n",
vnic->name, rq_idx, virt_to_bus ( iobuf->data ),
( virt_to_bus ( iobuf->data ) + TXNIC_RQE_SIZE ) );
/* Copy receive descriptor to ring */
copy_to_user ( vnic->rq.rqe, offset, &rqe, sizeof ( rqe ) );
/* Record number of refills for doorbell */
refilled++;
/* Record I/O buffer */
@@ -527,9 +521,8 @@ static void txnic_destroy_cq ( struct txnic *vnic ) {
* @v vnic Virtual NIC
*/
static void txnic_poll_cq ( struct txnic *vnic ) {
union txnic_cqe cqe;
union txnic_cqe *cqe;
uint64_t status;
size_t offset;
unsigned int qcount;
unsigned int cq_idx;
unsigned int i;
@@ -545,23 +538,21 @@ static void txnic_poll_cq ( struct txnic *vnic ) {
/* Get completion queue entry */
cq_idx = ( vnic->cq.cons++ % TXNIC_CQES );
offset = ( cq_idx * TXNIC_CQ_STRIDE );
copy_from_user ( &cqe, vnic->cq.cqe, offset, sizeof ( cqe ) );
cqe = &vnic->cq.cqe[cq_idx];
/* Process completion queue entry */
switch ( cqe.common.cqe_type ) {
switch ( cqe->common.cqe_type ) {
case TXNIC_CQE_TYPE_SEND:
txnic_complete_sqe ( vnic, &cqe.send );
txnic_complete_sqe ( vnic, &cqe->send );
break;
case TXNIC_CQE_TYPE_RX:
txnic_complete_rqe ( vnic, &cqe.rx );
txnic_complete_rqe ( vnic, &cqe->rx );
break;
default:
DBGC ( vnic, "TXNIC %s unknown completion type %d\n",
vnic->name, cqe.common.cqe_type );
DBGC_HDA ( vnic,
( virt_to_phys ( vnic->cq.cqe ) + offset ),
&cqe, sizeof ( cqe ) );
vnic->name, cqe->common.cqe_type );
DBGC_HDA ( vnic, virt_to_phys ( cqe ), cqe,
sizeof ( *cqe ) );
break;
}
}

11
src/drivers/net/thunderx.h
View File

@@ -12,7 +12,6 @@ FILE_LICENCE ( GPL2_OR_LATER_OR_UBDL );
#include <stdint.h>
#include <ipxe/list.h>
#include <ipxe/netdevice.h>
#include <ipxe/uaccess.h>
/******************************************************************************
*
@@ -188,7 +187,7 @@ struct txnic_sq {
/** Consumer counter */
unsigned int cons;
/** Send queue entries */
userptr_t sqe;
struct txnic_sqe *sqe;
};
/******************************************************************************
@@ -280,7 +279,7 @@ struct txnic_rq {
/** Consumer counter */
unsigned int cons;
/** Receive queue entries */
userptr_t rqe;
struct txnic_rqe *rqe;
/** I/O buffers */
struct io_buffer *iobuf[TXNIC_RQ_FILL];
};
@@ -381,6 +380,8 @@ union txnic_cqe {
struct txnic_cqe_send send;
/** Receive completion */
struct txnic_cqe_rx rx;
/** Padding */
uint8_t pad[512];
};
/** Number of completion queue entries
@@ -393,7 +394,7 @@ union txnic_cqe {
#define TXNIC_CQ_ALIGN 512
/** Completion queue stride */
#define TXNIC_CQ_STRIDE 512
#define TXNIC_CQ_STRIDE sizeof ( union txnic_cqe )
/** Completion queue size */
#define TXNIC_CQ_SIZE ( TXNIC_CQES * TXNIC_CQ_STRIDE )
@@ -403,7 +404,7 @@ struct txnic_cq {
/** Consumer counter */
unsigned int cons;
/** Completion queue entries */
userptr_t cqe;
union txnic_cqe *cqe;
};
/******************************************************************************