* [PATCH v3 1/2] aspeed: Add Scater-Gather support for HACE Hash
2021-03-26 19:37 [PATCH v3 0/2] aspeed: HACE hash Scatter-Gather support Klaus Heinrich Kiwi
@ 2021-03-26 19:37 ` Klaus Heinrich Kiwi
2021-03-29 8:10 ` Cédric Le Goater
2021-03-26 19:37 ` [PATCH v3 2/2] tests: Aspeed HACE Scatter-Gather tests Klaus Heinrich Kiwi
1 sibling, 1 reply; 6+ messages in thread
From: Klaus Heinrich Kiwi @ 2021-03-26 19:37 UTC (permalink / raw)
To: qemu-arm, qemu-devel
Cc: Laurent Vivier, Peter Maydell, Thomas Huth, Andrew Jeffery,
Klaus Heinrich Kiwi, Cédric Le Goater, Paolo Bonzini,
Joel Stanley
Complement the Aspeed HACE support with Scatter-Gather hash support for
sha256 and sha512. Scatter-Gather is only supported on AST2600-series.
Signed-off-by: Klaus Heinrich Kiwi <klaus@linux.vnet.ibm.com>
---
docs/system/arm/aspeed.rst | 2 +-
hw/misc/aspeed_hace.c | 126 +++++++++++++++++++++++++++++++++++--
2 files changed, 121 insertions(+), 7 deletions(-)
diff --git a/docs/system/arm/aspeed.rst b/docs/system/arm/aspeed.rst
index f9466e6d82..8680fd9409 100644
--- a/docs/system/arm/aspeed.rst
+++ b/docs/system/arm/aspeed.rst
@@ -49,7 +49,7 @@ Supported devices
* Ethernet controllers
* Front LEDs (PCA9552 on I2C bus)
* LPC Peripheral Controller (a subset of subdevices are supported)
- * Hash/Crypto Engine (HACE) - Hash support only, no scatter-gather
+ * Hash/Crypto Engine (HACE) - Hash support only
Missing devices
diff --git a/hw/misc/aspeed_hace.c b/hw/misc/aspeed_hace.c
index 6e5b447a48..cbff5a69cf 100644
--- a/hw/misc/aspeed_hace.c
+++ b/hw/misc/aspeed_hace.c
@@ -57,6 +57,14 @@
/* Other cmd bits */
#define HASH_IRQ_EN BIT(9)
#define HASH_SG_EN BIT(18)
+/* Scatter-gather data list */
+#define SG_LIST_LEN_SIZE 4
+#define SG_LIST_LEN_MASK 0x0FFFFFFF
+#define SG_LIST_LEN_LAST BIT(31)
+#define SG_LIST_ADDR_SIZE 4
+#define SG_LIST_ADDR_MASK 0x7FFFFFFF
+#define SG_LIST_ENTRY_SIZE (SG_LIST_LEN_SIZE + SG_LIST_ADDR_SIZE)
+#define ASPEED_HACE_MAX_SG 256 /* max number of entries */
static const struct {
uint32_t mask;
@@ -129,6 +137,114 @@ static int do_hash_operation(AspeedHACEState *s, int algo)
return 0;
}
+static int do_hash_sg_operation(AspeedHACEState *s, int algo)
+{
+ hwaddr src, dest, req_size;
+ uint32_t entry_len, entry_addr;
+ uint8_t *digest_buf = NULL;
+ unsigned int i = 0;
+ MemTxResult result;
+ struct iovec iov[ASPEED_HACE_MAX_SG];
+ size_t digest_len = 0, size = 0;
+ int rc;
+
+ req_size = s->regs[R_HASH_SRC_LEN];
+ dest = s->regs[R_HASH_DEST];
+
+ while (i < ASPEED_HACE_MAX_SG) {
+ src = s->regs[R_HASH_SRC] + (i * SG_LIST_ENTRY_SIZE);
+ entry_len = address_space_ldl_le(&s->dram_as, src,
+ MEMTXATTRS_UNSPECIFIED, &result);
+ if (result != MEMTX_OK) {
+ qemu_log_mask(LOG_GUEST_ERROR,
+ "%s: failed to load SG Array length entry %"PRIu32" from 0x%"HWADDR_PRIx"\n",
+ __func__, i, src);
+ rc = -EACCES;
+ goto cleanup;
+ }
+ entry_addr = address_space_ldl_le(&s->dram_as, src + SG_LIST_LEN_SIZE,
+ MEMTXATTRS_UNSPECIFIED, &result);
+ if (result != MEMTX_OK) {
+ qemu_log_mask(LOG_GUEST_ERROR,
+ "%s: failed to load SG Array address entry %"PRIu32" from 0x%"HWADDR_PRIx"\n",
+ __func__, i, src + SG_LIST_LEN_SIZE);
+ rc = -EACCES;
+ goto cleanup;
+ }
+
+ iov[i].iov_len = (hwaddr) (entry_len & SG_LIST_LEN_MASK);
+ iov[i].iov_base = address_space_map(&s->dram_as,
+ entry_addr & SG_LIST_ADDR_MASK,
+ &iov[i].iov_len, false,
+ MEMTXATTRS_UNSPECIFIED);
+ if (!iov[i].iov_base) {
+ qemu_log_mask(LOG_GUEST_ERROR,
+ "%s: failed to map dram for SG array entry %"PRIu32" for region 0x%"PRIx32", len %"PRIu32"\n",
+ __func__, i, entry_addr & SG_LIST_ADDR_MASK, entry_len & SG_LIST_LEN_MASK);
+ rc = -EACCES;
+ goto cleanup;
+ }
+ if (iov[i].iov_len != (entry_len & SG_LIST_LEN_MASK))
+ qemu_log_mask(LOG_GUEST_ERROR,
+ "%s: Warning: dram map for SG region entry %"PRIu32" requested size %"PRIu32" != mapped size %"PRIu64"\n",
+ __func__, i, entry_len & SG_LIST_LEN_MASK, iov[i].iov_len);
+
+ size += iov[i].iov_len;
+ i++;
+
+ if (entry_len & SG_LIST_LEN_LAST) {
+ break;
+ }
+ }
+
+ if (!(entry_len & SG_LIST_LEN_LAST)) {
+ qemu_log_mask(LOG_GUEST_ERROR,
+ "%s: Error: Exhausted maximum of %"PRIu32" SG array entries\n",
+ __func__, ASPEED_HACE_MAX_SG);
+ rc = -ENOTSUP;
+ goto cleanup;
+ }
+
+ if (size != req_size)
+ qemu_log_mask(LOG_GUEST_ERROR,
+ "%s: Warning: requested SG total size %"PRIu64" != actual size %"PRIu64"\n",
+ __func__, req_size, size);
+
+ rc = qcrypto_hash_bytesv(algo, iov, i, &digest_buf, &digest_len,
+ &error_fatal);
+ if (rc < 0) {
+ qemu_log_mask(LOG_GUEST_ERROR, "%s: qcrypto failed\n",
+ __func__);
+ goto cleanup;
+ }
+
+ rc = address_space_write(&s->dram_as, dest, MEMTXATTRS_UNSPECIFIED,
+ digest_buf, digest_len);
+ if (rc)
+ qemu_log_mask(LOG_GUEST_ERROR,
+ "%s: address space write failed\n", __func__);
+ g_free(digest_buf);
+
+cleanup:
+
+ for (; i > 0; i--) {
+ address_space_unmap(&s->dram_as, iov[i - 1].iov_base,
+ iov[i - 1].iov_len, false,
+ iov[i - 1].iov_len);
+ }
+
+ /*
+ * Set status bits to indicate completion. Testing shows hardware sets
+ * these irrespective of HASH_IRQ_EN.
+ */
+ if (!rc) {
+ s->regs[R_STATUS] |= HASH_IRQ;
+ }
+
+ return rc;
+}
+
+
static uint64_t aspeed_hace_read(void *opaque, hwaddr addr, unsigned int size)
{
@@ -187,11 +303,6 @@ static void aspeed_hace_write(void *opaque, hwaddr addr, uint64_t data,
"%s: HMAC engine command mode %"PRIx64" not implemented",
__func__, (data & HASH_HMAC_MASK) >> 8);
}
- if (data & HASH_SG_EN) {
- qemu_log_mask(LOG_UNIMP,
- "%s: Hash scatter gather mode not implemented",
- __func__);
- }
if (data & BIT(1)) {
qemu_log_mask(LOG_UNIMP,
"%s: Cascaded mode not implemented",
@@ -204,7 +315,10 @@ static void aspeed_hace_write(void *opaque, hwaddr addr, uint64_t data,
__func__, data & ahc->hash_mask);
break;
}
- do_hash_operation(s, algo);
+ if (data & HASH_SG_EN)
+ do_hash_sg_operation(s, algo);
+ else
+ do_hash_operation(s, algo);
if (data & HASH_IRQ_EN) {
qemu_irq_raise(s->irq);
--
2.25.1
^ permalink raw reply related [flat|nested] 6+ messages in thread* [PATCH v3 2/2] tests: Aspeed HACE Scatter-Gather tests
2021-03-26 19:37 [PATCH v3 0/2] aspeed: HACE hash Scatter-Gather support Klaus Heinrich Kiwi
2021-03-26 19:37 ` [PATCH v3 1/2] aspeed: Add Scater-Gather support for HACE Hash Klaus Heinrich Kiwi
@ 2021-03-26 19:37 ` Klaus Heinrich Kiwi
2021-03-26 19:48 ` Klaus Heinrich Kiwi
1 sibling, 1 reply; 6+ messages in thread
From: Klaus Heinrich Kiwi @ 2021-03-26 19:37 UTC (permalink / raw)
To: qemu-arm, qemu-devel
Cc: Laurent Vivier, Peter Maydell, Thomas Huth, Andrew Jeffery,
Klaus Heinrich Kiwi, Cédric Le Goater, Paolo Bonzini,
Joel Stanley
Expand current Aspeed HACE testsuite to also include Scatter-Gather of
sha256 and sha512 operations.
Signed-off-by: Klaus Heinrich Kiwi <klaus@linux.vnet.ibm.com>
---
tests/qtest/aspeed_hace-test.c | 156 +++++++++++++++++++++++++++++++--
1 file changed, 147 insertions(+), 9 deletions(-)
diff --git a/tests/qtest/aspeed_hace-test.c b/tests/qtest/aspeed_hace-test.c
index 2b624b6b09..d259f1a09c 100644
--- a/tests/qtest/aspeed_hace-test.c
+++ b/tests/qtest/aspeed_hace-test.c
@@ -34,6 +34,12 @@
#define HACE_HASH_KEY_BUFF 0x28
#define HACE_HASH_DATA_LEN 0x2c
#define HACE_HASH_CMD 0x30
+/* Scatter-Gather Hash */
+#define SG_LIST_LEN_LAST BIT(31)
+struct AspeedSgList {
+ uint32_t len;
+ uint32_t addr;
+} __attribute__ ((__packed__));
/*
* Test vector is the ascii "abc"
@@ -63,6 +69,33 @@ static const uint8_t test_result_md5[] = {
0x90, 0x01, 0x50, 0x98, 0x3c, 0xd2, 0x4f, 0xb0, 0xd6, 0x96, 0x3f, 0x7d,
0x28, 0xe1, 0x7f, 0x72};
+/*
+ * The Scatter-Gather Test vector is the ascii "abc" "def" "ghi", broken
+ * into blocks of 3 characters as shown
+ *
+ * Expected results were generated using command line utitiles:
+ *
+ * echo -n -e 'abcdefghi' | dd of=/tmp/test
+ * for hash in sha512sum sha256sum; do $hash /tmp/test; done
+ *
+ */
+static const uint8_t test_vector_sg1[] = {0x61, 0x62, 0x63};
+static const uint8_t test_vector_sg2[] = {0x64, 0x65, 0x66};
+static const uint8_t test_vector_sg3[] = {0x67, 0x68, 0x69};
+
+static const uint8_t test_result_sg_sha512[] = {
+ 0xf2, 0x2d, 0x51, 0xd2, 0x52, 0x92, 0xca, 0x1d, 0x0f, 0x68, 0xf6, 0x9a,
+ 0xed, 0xc7, 0x89, 0x70, 0x19, 0x30, 0x8c, 0xc9, 0xdb, 0x46, 0xef, 0xb7,
+ 0x5a, 0x03, 0xdd, 0x49, 0x4f, 0xc7, 0xf1, 0x26, 0xc0, 0x10, 0xe8, 0xad,
+ 0xe6, 0xa0, 0x0a, 0x0c, 0x1a, 0x5f, 0x1b, 0x75, 0xd8, 0x1e, 0x0e, 0xd5,
+ 0xa9, 0x3c, 0xe9, 0x8d, 0xc9, 0xb8, 0x33, 0xdb, 0x78, 0x39, 0x24, 0x7b,
+ 0x1d, 0x9c, 0x24, 0xfe};
+
+static const uint8_t test_result_sg_sha256[] = {
+ 0x19, 0xcc, 0x02, 0xf2, 0x6d, 0xf4, 0x3c, 0xc5, 0x71, 0xbc, 0x9e, 0xd7,
+ 0xb0, 0xc4, 0xd2, 0x92, 0x24, 0xa3, 0xec, 0x22, 0x95, 0x29, 0x22, 0x17,
+ 0x25, 0xef, 0x76, 0xd0, 0x21, 0xc8, 0x32, 0x6f};
+
static void write_regs(QTestState *s, uint32_t base, uint32_t src,
uint32_t length, uint32_t out, uint32_t method)
@@ -167,6 +200,98 @@ static void test_sha512(const char *machine, const uint32_t base,
test_result_sha512, sizeof(digest));
}
+static void test_sha256_sg(const char *machine, const uint32_t base,
+ const uint32_t src_addr)
+{
+ QTestState *s = qtest_init(machine);
+
+ const uint32_t src_addr_1 = src_addr + 0x1000000;
+ const uint32_t src_addr_2 = src_addr + 0x2000000;
+ const uint32_t src_addr_3 = src_addr + 0x3000000;
+ const uint32_t digest_addr = src_addr + 0x4000000;
+ uint8_t digest[32] = {0};
+ struct AspeedSgList array[] = {
+ { sizeof(test_vector_sg1), src_addr_1},
+ { sizeof(test_vector_sg2), src_addr_2},
+ { sizeof(test_vector_sg3) | SG_LIST_LEN_LAST, src_addr_3},
+ };
+
+ /* Check engine is idle, no busy or irq bits set */
+ g_assert_cmphex(qtest_readl(s, base + HACE_STS), ==, 0);
+
+ /* Write test vector into memory */
+ qtest_memwrite(s, src_addr_1, test_vector_sg1, sizeof(test_vector_sg1));
+ qtest_memwrite(s, src_addr_2, test_vector_sg2, sizeof(test_vector_sg2));
+ qtest_memwrite(s, src_addr_3, test_vector_sg3, sizeof(test_vector_sg3));
+ qtest_memwrite(s, src_addr, array, sizeof(array));
+
+ write_regs(s, base, src_addr,
+ (sizeof(test_vector_sg1)
+ + sizeof(test_vector_sg2)
+ + sizeof(test_vector_sg3)),
+ digest_addr, HACE_ALGO_SHA256 | HACE_SG_EN);
+
+ /* Check hash IRQ status is asserted */
+ g_assert_cmphex(qtest_readl(s, base + HACE_STS), ==, 0x00000200);
+
+ /* Clear IRQ status and check status is deasserted */
+ qtest_writel(s, base + HACE_STS, 0x00000200);
+ g_assert_cmphex(qtest_readl(s, base + HACE_STS), ==, 0);
+
+ /* Read computed digest from memory */
+ qtest_memread(s, digest_addr, digest, sizeof(digest));
+
+ /* Check result of computation */
+ g_assert_cmpmem(digest, sizeof(digest),
+ test_result_sg_sha256, sizeof(digest));
+}
+
+static void test_sha512_sg(const char *machine, const uint32_t base,
+ const uint32_t src_addr)
+{
+ QTestState *s = qtest_init(machine);
+
+ const uint32_t src_addr_1 = src_addr + 0x1000000;
+ const uint32_t src_addr_2 = src_addr + 0x2000000;
+ const uint32_t src_addr_3 = src_addr + 0x3000000;
+ const uint32_t digest_addr = src_addr + 0x4000000;
+ uint8_t digest[64] = {0};
+ struct AspeedSgList array[] = {
+ { sizeof(test_vector_sg1), src_addr_1},
+ { sizeof(test_vector_sg2), src_addr_2},
+ { sizeof(test_vector_sg3) | SG_LIST_LEN_LAST, src_addr_3},
+ };
+
+ /* Check engine is idle, no busy or irq bits set */
+ g_assert_cmphex(qtest_readl(s, base + HACE_STS), ==, 0);
+
+ /* Write test vector into memory */
+ qtest_memwrite(s, src_addr_1, test_vector_sg1, sizeof(test_vector_sg1));
+ qtest_memwrite(s, src_addr_2, test_vector_sg2, sizeof(test_vector_sg2));
+ qtest_memwrite(s, src_addr_3, test_vector_sg3, sizeof(test_vector_sg3));
+ qtest_memwrite(s, src_addr, array, sizeof(array));
+
+ write_regs(s, base, src_addr,
+ (sizeof(test_vector_sg1)
+ + sizeof(test_vector_sg2)
+ + sizeof(test_vector_sg3)),
+ digest_addr, HACE_ALGO_SHA512 | HACE_SG_EN);
+
+ /* Check hash IRQ status is asserted */
+ g_assert_cmphex(qtest_readl(s, base + HACE_STS), ==, 0x00000200);
+
+ /* Clear IRQ status and check status is deasserted */
+ qtest_writel(s, base + HACE_STS, 0x00000200);
+ g_assert_cmphex(qtest_readl(s, base + HACE_STS), ==, 0);
+
+ /* Read computed digest from memory */
+ qtest_memread(s, digest_addr, digest, sizeof(digest));
+
+ /* Check result of computation */
+ g_assert_cmpmem(digest, sizeof(digest),
+ test_result_sg_sha512, sizeof(digest));
+}
+
struct masks {
uint32_t src;
uint32_t dest;
@@ -174,21 +299,21 @@ struct masks {
};
static const struct masks ast2600_masks = {
- .src = 0x7fffffff,
- .dest = 0x7ffffff8,
- .len = 0x0fffffff,
+ .src = 0x7fffffff,
+ .dest = 0x7ffffff8,
+ .len = 0x0fffffff,
};
static const struct masks ast2500_masks = {
- .src = 0x3fffffff,
- .dest = 0x3ffffff8,
- .len = 0x0fffffff,
+ .src = 0x3fffffff,
+ .dest = 0x3ffffff8,
+ .len = 0x0fffffff,
};
static const struct masks ast2400_masks = {
- .src = 0x0fffffff,
- .dest = 0x0ffffff8,
- .len = 0x0fffffff,
+ .src = 0x0fffffff,
+ .dest = 0x0ffffff8,
+ .len = 0x0fffffff,
};
static void test_addresses(const char *machine, const uint32_t base,
@@ -238,11 +363,21 @@ static void test_sha256_ast2600(void)
test_sha256("-machine ast2600-evb", 0x1e6d0000, 0x80000000);
}
+static void test_sha256_sg_ast2600(void)
+{
+ test_sha256_sg("-machine ast2600-evb", 0x1e6d0000, 0x80000000);
+}
+
static void test_sha512_ast2600(void)
{
test_sha512("-machine ast2600-evb", 0x1e6d0000, 0x80000000);
}
+static void test_sha512_sg_ast2600(void)
+{
+ test_sha512_sg("-machine ast2600-evb", 0x1e6d0000, 0x80000000);
+}
+
static void test_addresses_ast2600(void)
{
test_addresses("-machine ast2600-evb", 0x1e6d0000, &ast2600_masks);
@@ -299,6 +434,9 @@ int main(int argc, char **argv)
qtest_add_func("ast2600/hace/sha256", test_sha256_ast2600);
qtest_add_func("ast2600/hace/md5", test_md5_ast2600);
+ qtest_add_func("ast2600/hace/sha512_sg", test_sha512_sg_ast2600);
+ qtest_add_func("ast2600/hace/sha256_sg", test_sha256_sg_ast2600);
+
qtest_add_func("ast2500/hace/addresses", test_addresses_ast2500);
qtest_add_func("ast2500/hace/sha512", test_sha512_ast2500);
qtest_add_func("ast2500/hace/sha256", test_sha256_ast2500);
--
2.25.1
^ permalink raw reply related [flat|nested] 6+ messages in thread