Author: mav
Date: Fri Sep 27 02:09:20 2019
New Revision: 352787
URL: https://svnweb.freebsd.org/changeset/base/352787
Log:
Replace argument checks with assertions.
Those functions are used by kernel, and we can't check all possible argument
errors in production kernel. Plus according to docs many of those errors
are checked by hardware. Assertions should just help with code debugging.
MFC after: 2 weeks
Modified:
head/sys/dev/ioat/ioat.c
Modified: head/sys/dev/ioat/ioat.c
==============================================================================
--- head/sys/dev/ioat/ioat.c Fri Sep 27 00:29:12 2019 (r352786)
+++ head/sys/dev/ioat/ioat.c Fri Sep 27 02:09:20 2019 (r352787)
@@ -1136,17 +1136,14 @@ ioat_op_generic(struct ioat_softc *ioat, uint8_t op,
KASSERT((flags & ~_DMA_GENERIC_FLAGS) == 0,
("Unrecognized flag(s): %#x", flags & ~_DMA_GENERIC_FLAGS));
+ KASSERT(size <= ioat->max_xfer_size, ("%s: size too big (%u > %u)",
+ __func__, (unsigned)size, ioat->max_xfer_size));
+
if ((flags & DMA_NO_WAIT) != 0)
mflags = M_NOWAIT;
else
mflags = M_WAITOK;
- if (size > ioat->max_xfer_size) {
- ioat_log_message(0, "%s: max_xfer_size = %d, requested = %u\n",
- __func__, ioat->max_xfer_size, (unsigned)size);
- return (NULL);
- }
-
if (ioat_reserve_space(ioat, 1, mflags) != 0)
return (NULL);
@@ -1226,11 +1223,8 @@ ioat_copy(bus_dmaengine_t dmaengine, bus_addr_t dst,
ioat = to_ioat_softc(dmaengine);
- if (((src | dst) & (0xffffull << 48)) != 0) {
- ioat_log_message(0, "%s: High 16 bits of src/dst invalid\n",
- __func__);
- return (NULL);
- }
+ KASSERT(((src | dst) & (0xffffull << 48)) == 0,
+ ("%s: high 16 bits of src/dst are not zero", __func__));
desc = ioat_op_generic(ioat, IOAT_OP_COPY, len, src, dst, callback_fn,
callback_arg, flags);
@@ -1262,16 +1256,10 @@ ioat_copy_8k_aligned(bus_dmaengine_t dmaengine, bus_ad
ioat = to_ioat_softc(dmaengine);
CTR2(KTR_IOAT, "%s channel=%u", __func__, ioat->chan_idx);
- if (((src1 | src2 | dst1 | dst2) & (0xffffull << 48)) != 0) {
- ioat_log_message(0, "%s: High 16 bits of src/dst invalid\n",
- __func__);
- return (NULL);
- }
- if (((src1 | src2 | dst1 | dst2) & PAGE_MASK) != 0) {
- ioat_log_message(0, "%s: Addresses must be page-aligned\n",
- __func__);
- return (NULL);
- }
+ KASSERT(((src1 | src2 | dst1 | dst2) & (0xffffull << 48)) == 0,
+ ("%s: high 16 bits of src/dst are not zero", __func__));
+ KASSERT(((src1 | src2 | dst1 | dst2) & PAGE_MASK) == 0,
+ ("%s: addresses are not page-aligned", __func__));
desc = ioat_op_generic(ioat, IOAT_OP_COPY, 2 * PAGE_SIZE, 0, 0,
callback_fn, callback_arg, flags);
@@ -1349,26 +1337,15 @@ ioat_copy_crc(bus_dmaengine_t dmaengine, bus_addr_t ds
ioat = to_ioat_softc(dmaengine);
CTR2(KTR_IOAT, "%s channel=%u", __func__, ioat->chan_idx);
- if ((ioat->capabilities & IOAT_DMACAP_MOVECRC) == 0) {
- ioat_log_message(0, "%s: Device lacks MOVECRC capability\n",
- __func__);
- return (NULL);
- }
- if (((src | dst) & (0xffffffull << 40)) != 0) {
- ioat_log_message(0, "%s: High 24 bits of src/dst invalid\n",
- __func__);
- return (NULL);
- }
+ KASSERT((ioat->capabilities & IOAT_DMACAP_MOVECRC) != 0,
+ ("%s: device lacks MOVECRC capability", __func__));
+ KASSERT(((src | dst) & (0xffffffull << 40)) == 0,
+ ("%s: high 24 bits of src/dst are not zero", __func__));
teststore = (flags & _DMA_CRC_TESTSTORE);
- if (teststore == _DMA_CRC_TESTSTORE) {
- ioat_log_message(0, "%s: TEST and STORE invalid\n", __func__);
- return (NULL);
- }
- if (teststore == 0 && (flags & DMA_CRC_INLINE) != 0) {
- ioat_log_message(0, "%s: INLINE invalid without TEST or
STORE\n",
- __func__);
- return (NULL);
- }
+ KASSERT(teststore != _DMA_CRC_TESTSTORE,
+ ("%s: TEST and STORE invalid", __func__));
+ KASSERT(teststore != 0 || (flags & DMA_CRC_INLINE) == 0,
+ ("%s: INLINE invalid without TEST or STORE", __func__));
switch (teststore) {
case DMA_CRC_STORE:
@@ -1383,12 +1360,9 @@ ioat_copy_crc(bus_dmaengine_t dmaengine, bus_addr_t ds
break;
}
- if ((flags & DMA_CRC_INLINE) == 0 &&
- (crcptr & (0xffffffull << 40)) != 0) {
- ioat_log_message(0,
- "%s: High 24 bits of crcptr invalid\n", __func__);
- return (NULL);
- }
+ KASSERT((flags & DMA_CRC_INLINE) != 0 ||
+ (crcptr & (0xffffffull << 40)) == 0,
+ ("%s: high 24 bits of crcptr are not zero", __func__));
desc = ioat_op_generic(ioat, op, len, src, dst, callback_fn,
callback_arg, flags & ~_DMA_CRC_FLAGS);
@@ -1439,26 +1413,15 @@ ioat_crc(bus_dmaengine_t dmaengine, bus_addr_t src, bu
ioat = to_ioat_softc(dmaengine);
CTR2(KTR_IOAT, "%s channel=%u", __func__, ioat->chan_idx);
- if ((ioat->capabilities & IOAT_DMACAP_CRC) == 0) {
- ioat_log_message(0, "%s: Device lacks CRC capability\n",
- __func__);
- return (NULL);
- }
- if ((src & (0xffffffull << 40)) != 0) {
- ioat_log_message(0, "%s: High 24 bits of src invalid\n",
- __func__);
- return (NULL);
- }
+ KASSERT((ioat->capabilities & IOAT_DMACAP_CRC) != 0,
+ ("%s: device lacks CRC capability", __func__));
+ KASSERT((src & (0xffffffull << 40)) == 0,
+ ("%s: high 24 bits of src are not zero", __func__));
teststore = (flags & _DMA_CRC_TESTSTORE);
- if (teststore == _DMA_CRC_TESTSTORE) {
- ioat_log_message(0, "%s: TEST and STORE invalid\n", __func__);
- return (NULL);
- }
- if (teststore == 0 && (flags & DMA_CRC_INLINE) != 0) {
- ioat_log_message(0, "%s: INLINE invalid without TEST or
STORE\n",
- __func__);
- return (NULL);
- }
+ KASSERT(teststore != _DMA_CRC_TESTSTORE,
+ ("%s: TEST and STORE invalid", __func__));
+ KASSERT(teststore != 0 || (flags & DMA_CRC_INLINE) == 0,
+ ("%s: INLINE invalid without TEST or STORE", __func__));
switch (teststore) {
case DMA_CRC_STORE:
@@ -1473,12 +1436,9 @@ ioat_crc(bus_dmaengine_t dmaengine, bus_addr_t src, bu
break;
}
- if ((flags & DMA_CRC_INLINE) == 0 &&
- (crcptr & (0xffffffull << 40)) != 0) {
- ioat_log_message(0,
- "%s: High 24 bits of crcptr invalid\n", __func__);
- return (NULL);
- }
+ KASSERT((flags & DMA_CRC_INLINE) != 0 ||
+ (crcptr & (0xffffffull << 40)) == 0,
+ ("%s: high 24 bits of crcptr are not zero", __func__));
desc = ioat_op_generic(ioat, op, len, src, 0, callback_fn,
callback_arg, flags & ~_DMA_CRC_FLAGS);
@@ -1525,18 +1485,11 @@ ioat_blockfill(bus_dmaengine_t dmaengine, bus_addr_t d
ioat = to_ioat_softc(dmaengine);
CTR2(KTR_IOAT, "%s channel=%u", __func__, ioat->chan_idx);
- if ((ioat->capabilities & IOAT_DMACAP_BFILL) == 0) {
- ioat_log_message(0, "%s: Device lacks BFILL capability\n",
- __func__);
- return (NULL);
- }
+ KASSERT((ioat->capabilities & IOAT_DMACAP_BFILL) != 0,
+ ("%s: device lacks BFILL capability", __func__));
+ KASSERT((dst & (0xffffull << 48)) == 0,
+ ("%s: high 16 bits of crcptr are not zero", __func__));
- if ((dst & (0xffffull << 48)) != 0) {
- ioat_log_message(0, "%s: High 16 bits of dst invalid\n",
- __func__);
- return (NULL);
- }
-
desc = ioat_op_generic(ioat, IOAT_OP_FILL, len, 0, dst,
callback_fn, callback_arg, flags);
if (desc == NULL)
@@ -1693,7 +1646,7 @@ ioat_poll_timer_callback(void *arg)
struct ioat_softc *ioat;
ioat = arg;
- ioat_log_message(3, "%s\n", __func__);
+ CTR1(KTR_IOAT, "%s", __func__);
ioat_process_events(ioat, FALSE);
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