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crypto: inside-secure - Base CD fetchcount on actual CD FIFO size 

This patch derives the command descriptor fetch count from the actual
FIFO size advertised by the hardware. Fetching command descriptors
one at a time is a performance bottleneck for small blocks, especially
on hardware with multiple pipes. Even moreso if the HW has few rings.

Signed-off-by: Pascal van Leeuwen <pvanleeuwen@verimatrix.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This commit is contained in:
Pascal van Leeuwen 2019-09-06 16:31:51 +02:00 committed by Herbert Xu
parent 4bdf712c30
commit 35c0e6c375
2 changed files with 48 additions and 10 deletions
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47
drivers/crypto/inside-secure/safexcel.c
View File

@ -310,13 +310,22 @@ release_fw:
static int safexcel_hw_setup_cdesc_rings(struct safexcel_crypto_priv *priv)
{
u32 hdw, cd_size_rnd, val;
int i;
int i, cd_fetch_cnt;
hdw = readl(EIP197_HIA_AIC_G(priv) + EIP197_HIA_OPTIONS);
hdw &= GENMASK(27, 25);
hdw >>= 25;
cd_size_rnd = (priv->config.cd_size + (BIT(hdw) - 1)) >> hdw;
cd_size_rnd = (priv->config.cd_size +
(BIT(priv->hwconfig.hwdataw) - 1)) >>
priv->hwconfig.hwdataw;
/* determine number of CD's we can fetch into the CD FIFO as 1 block */
if (priv->flags & SAFEXCEL_HW_EIP197) {
/* EIP197: try to fetch enough in 1 go to keep all pipes busy */
cd_fetch_cnt = (1 << priv->hwconfig.hwcfsize) / cd_size_rnd;
cd_fetch_cnt = min_t(uint, cd_fetch_cnt,
(priv->config.pes * EIP197_FETCH_DEPTH));
} else {
/* for the EIP97, just fetch all that fits minus 1 */
cd_fetch_cnt = ((1 << priv->hwconfig.hwcfsize) /
cd_size_rnd) - 1;
}
for (i = 0; i < priv->config.rings; i++) {
/* ring base address */
@ -328,8 +337,8 @@ static int safexcel_hw_setup_cdesc_rings(struct safexcel_crypto_priv *priv)
writel(EIP197_xDR_DESC_MODE_64BIT | (priv->config.cd_offset << 16) |
priv->config.cd_size,
EIP197_HIA_CDR(priv, i) + EIP197_HIA_xDR_DESC_SIZE);
writel(((EIP197_FETCH_COUNT * (cd_size_rnd << hdw)) << 16) |
(EIP197_FETCH_COUNT * priv->config.cd_offset),
writel(((cd_fetch_cnt * (cd_size_rnd << hdw)) << 16) |
(cd_fetch_cnt * priv->config.cd_offset),
EIP197_HIA_CDR(priv, i) + EIP197_HIA_xDR_CFG);
/* Configure DMA tx control */
@ -1142,7 +1151,7 @@ static int safexcel_probe_generic(void *pdev,
int is_pci_dev)
{
struct device *dev = priv->dev;
u32 peid, version, mask, val;
u32 peid, version, mask, val, hiaopt;
int i, ret, hwctg;
priv->context_pool = dmam_pool_create("safexcel-context", dev,
@ -1226,13 +1235,31 @@ static int safexcel_probe_generic(void *pdev,
}
priv->hwconfig.pever = EIP197_VERSION_MASK(version);
hiaopt = readl(EIP197_HIA_AIC(priv) + EIP197_HIA_OPTIONS);
if (priv->flags & SAFEXCEL_HW_EIP197) {
/* EIP197 */
priv->hwconfig.hwdataw = (hiaopt >> EIP197_HWDATAW_OFFSET) &
EIP197_HWDATAW_MASK;
priv->hwconfig.hwcfsize = ((hiaopt >> EIP197_CFSIZE_OFFSET) &
EIP197_CFSIZE_MASK) +
EIP197_CFSIZE_ADJUST;
} else {
/* EIP97 */
priv->hwconfig.hwdataw = (hiaopt >> EIP197_HWDATAW_OFFSET) &
EIP97_HWDATAW_MASK;
priv->hwconfig.hwcfsize = (hiaopt >> EIP97_CFSIZE_OFFSET) &
EIP97_CFSIZE_MASK;
}
/* Get supported algorithms from EIP96 transform engine */
priv->hwconfig.algo_flags = readl(EIP197_PE(priv) +
EIP197_PE_EIP96_OPTIONS(0));
/* Print single info line describing what we just detected */
dev_info(priv->dev, "EIP%d:%x(%d)-HIA:%x,PE:%x,alg:%08x\n", peid,
dev_info(priv->dev, "EIP%d:%x(%d)-HIA:%x(%d,%d),PE:%x,alg:%08x\n", peid,
priv->hwconfig.hwver, hwctg, priv->hwconfig.hiaver,
priv->hwconfig.hwdataw, priv->hwconfig.hwcfsize,
priv->hwconfig.pever, priv->hwconfig.algo_flags);
safexcel_configure(priv);

11
drivers/crypto/inside-secure/safexcel.h
View File

@ -31,6 +31,7 @@
#define EIP197_MAX_TOKENS 18
#define EIP197_MAX_RINGS 4
#define EIP197_FETCH_COUNT 1
#define EIP197_FETCH_DEPTH 2
#define EIP197_MAX_BATCH_SZ 64
#define EIP197_GFP_FLAGS(base) ((base).flags & CRYPTO_TFM_REQ_MAY_SLEEP ? \
@ -225,6 +226,14 @@
#define EIP197_N_PES_OFFSET 4
#define EIP197_N_PES_MASK GENMASK(4, 0)
#define EIP97_N_PES_MASK GENMASK(2, 0)
#define EIP197_HWDATAW_OFFSET 25
#define EIP197_HWDATAW_MASK GENMASK(3, 0)
#define EIP97_HWDATAW_MASK GENMASK(2, 0)
#define EIP197_CFSIZE_OFFSET 9
#define EIP197_CFSIZE_ADJUST 4
#define EIP97_CFSIZE_OFFSET 8
#define EIP197_CFSIZE_MASK GENMASK(3, 0)
#define EIP97_CFSIZE_MASK GENMASK(4, 0)
/* EIP197_HIA_AIC_R_ENABLE_CTRL */
#define EIP197_CDR_IRQ(n) BIT((n) * 2)
@ -680,6 +689,8 @@ struct safexcel_hwconfig {
int hwver;
int hiaver;
int pever;
int hwdataw;
int hwcfsize;
};
struct safexcel_crypto_priv {