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Date: Thu, 28 Jun 2018 17:15:37 +0200
From: Antoine Tenart <antoine.tenart@...tlin.com>
To: herbert@...dor.apana.org.au, davem@...emloft.net,
gregory.clement@...tlin.com, andrew@...n.ch, jason@...edaemon.net,
sebastian.hesselbarth@...il.com
Cc: Ofer Heifetz <oferh@...vell.com>, linux-crypto@...r.kernel.org,
linux-kernel@...r.kernel.org, thomas.petazzoni@...tlin.com,
maxime.chevallier@...tlin.com, miquel.raynal@...tlin.com,
nadavh@...vell.com, igall@...vell.com,
Antoine Tenart <antoine.tenart@...tlin.com>
Subject: [PATCH 07/14] crypto: inside-secure - add multiple processing engine support
From: Ofer Heifetz <oferh@...vell.com>
So far a single processing engine (PE) was configured and used in the
Inside Secure SafeXcel cryptographic engine driver. Some versions have
more than a single PE. This patch rework the driver's initialization to
take this into account and to allow configuring more than one PE.
Signed-off-by: Ofer Heifetz <oferh@...vell.com>
[Antoine: some reworks and commit message.]
Signed-off-by: Antoine Tenart <antoine.tenart@...tlin.com>
---
drivers/crypto/inside-secure/safexcel.c | 224 +++++++++++++-----------
drivers/crypto/inside-secure/safexcel.h | 44 +++--
2 files changed, 150 insertions(+), 118 deletions(-)
diff --git a/drivers/crypto/inside-secure/safexcel.c b/drivers/crypto/inside-secure/safexcel.c
index baf8320d9c84..eefa6221533b 100644
--- a/drivers/crypto/inside-secure/safexcel.c
+++ b/drivers/crypto/inside-secure/safexcel.c
@@ -98,7 +98,7 @@ static void eip197_trc_cache_init(struct safexcel_crypto_priv *priv)
}
static void eip197_write_firmware(struct safexcel_crypto_priv *priv,
- const struct firmware *fw, u32 ctrl,
+ const struct firmware *fw, int pe, u32 ctrl,
u32 prog_en)
{
const u32 *data = (const u32 *)fw->data;
@@ -112,7 +112,7 @@ static void eip197_write_firmware(struct safexcel_crypto_priv *priv,
EIP197_PE(priv) + ctrl);
/* Enable access to the program memory */
- writel(prog_en, EIP197_PE(priv) + EIP197_PE_ICE_RAM_CTRL);
+ writel(prog_en, EIP197_PE(priv) + EIP197_PE_ICE_RAM_CTRL(pe));
/* Write the firmware */
for (i = 0; i < fw->size / sizeof(u32); i++)
@@ -120,7 +120,7 @@ static void eip197_write_firmware(struct safexcel_crypto_priv *priv,
priv->base + EIP197_CLASSIFICATION_RAMS + i * sizeof(u32));
/* Disable access to the program memory */
- writel(0, EIP197_PE(priv) + EIP197_PE_ICE_RAM_CTRL);
+ writel(0, EIP197_PE(priv) + EIP197_PE_ICE_RAM_CTRL(pe));
/* Release engine from reset */
val = readl(EIP197_PE(priv) + ctrl);
@@ -133,7 +133,7 @@ static int eip197_load_firmwares(struct safexcel_crypto_priv *priv)
const char *fw_name[] = {"ifpp.bin", "ipue.bin"};
const struct firmware *fw[FW_NB];
char fw_path[31];
- int i, j, ret = 0;
+ int i, j, ret = 0, pe;
u32 val;
for (i = 0; i < FW_NB; i++) {
@@ -151,22 +151,26 @@ static int eip197_load_firmwares(struct safexcel_crypto_priv *priv)
}
}
- /* Clear the scratchpad memory */
- val = readl(EIP197_PE(priv) + EIP197_PE_ICE_SCRATCH_CTRL);
- val |= EIP197_PE_ICE_SCRATCH_CTRL_CHANGE_TIMER |
- EIP197_PE_ICE_SCRATCH_CTRL_TIMER_EN |
- EIP197_PE_ICE_SCRATCH_CTRL_SCRATCH_ACCESS |
- EIP197_PE_ICE_SCRATCH_CTRL_CHANGE_ACCESS;
- writel(val, EIP197_PE(priv) + EIP197_PE_ICE_SCRATCH_CTRL);
-
- memset_io(EIP197_PE(priv) + EIP197_PE_ICE_SCRATCH_RAM, 0,
- EIP197_NUM_OF_SCRATCH_BLOCKS * sizeof(u32));
-
- eip197_write_firmware(priv, fw[FW_IFPP], EIP197_PE_ICE_FPP_CTRL,
- EIP197_PE_ICE_RAM_CTRL_FPP_PROG_EN);
-
- eip197_write_firmware(priv, fw[FW_IPUE], EIP197_PE_ICE_PUE_CTRL,
- EIP197_PE_ICE_RAM_CTRL_PUE_PROG_EN);
+ for (pe = 0; pe < priv->config.pes; pe++) {
+ /* Clear the scratchpad memory */
+ val = readl(EIP197_PE(priv) + EIP197_PE_ICE_SCRATCH_CTRL(pe));
+ val |= EIP197_PE_ICE_SCRATCH_CTRL_CHANGE_TIMER |
+ EIP197_PE_ICE_SCRATCH_CTRL_TIMER_EN |
+ EIP197_PE_ICE_SCRATCH_CTRL_SCRATCH_ACCESS |
+ EIP197_PE_ICE_SCRATCH_CTRL_CHANGE_ACCESS;
+ writel(val, EIP197_PE(priv) + EIP197_PE_ICE_SCRATCH_CTRL(pe));
+
+ memset_io(EIP197_PE(priv) + EIP197_PE_ICE_SCRATCH_RAM(pe), 0,
+ EIP197_NUM_OF_SCRATCH_BLOCKS * sizeof(u32));
+
+ eip197_write_firmware(priv, fw[FW_IFPP], pe,
+ EIP197_PE_ICE_FPP_CTRL(pe),
+ EIP197_PE_ICE_RAM_CTRL_FPP_PROG_EN);
+
+ eip197_write_firmware(priv, fw[FW_IPUE], pe,
+ EIP197_PE_ICE_PUE_CTRL(pe),
+ EIP197_PE_ICE_RAM_CTRL_PUE_PROG_EN);
+ }
release_fw:
for (j = 0; j < i; j++)
@@ -262,7 +266,7 @@ static int safexcel_hw_setup_rdesc_rings(struct safexcel_crypto_priv *priv)
static int safexcel_hw_init(struct safexcel_crypto_priv *priv)
{
u32 version, val;
- int i, ret;
+ int i, ret, pe;
/* Determine endianess and configure byte swap */
version = readl(EIP197_HIA_AIC(priv) + EIP197_HIA_VERSION);
@@ -288,83 +292,92 @@ static int safexcel_hw_init(struct safexcel_crypto_priv *priv)
/* Clear any pending interrupt */
writel(GENMASK(31, 0), EIP197_HIA_AIC_G(priv) + EIP197_HIA_AIC_G_ACK);
- /* Data Fetch Engine configuration */
-
- /* Reset all DFE threads */
- writel(EIP197_DxE_THR_CTRL_RESET_PE,
- EIP197_HIA_DFE_THR(priv) + EIP197_HIA_DFE_THR_CTRL);
-
- if (priv->version == EIP197B) {
- /* Reset HIA input interface arbiter */
- writel(EIP197_HIA_RA_PE_CTRL_RESET,
- EIP197_HIA_AIC(priv) + EIP197_HIA_RA_PE_CTRL);
- }
+ /* Processing Engine configuration */
+ for (pe = 0; pe < priv->config.pes; pe++) {
+ /* Data Fetch Engine configuration */
- /* DMA transfer size to use */
- val = EIP197_HIA_DFE_CFG_DIS_DEBUG;
- val |= EIP197_HIA_DxE_CFG_MIN_DATA_SIZE(6) | EIP197_HIA_DxE_CFG_MAX_DATA_SIZE(9);
- val |= EIP197_HIA_DxE_CFG_MIN_CTRL_SIZE(6) | EIP197_HIA_DxE_CFG_MAX_CTRL_SIZE(7);
- val |= EIP197_HIA_DxE_CFG_DATA_CACHE_CTRL(RD_CACHE_3BITS);
- val |= EIP197_HIA_DxE_CFG_CTRL_CACHE_CTRL(RD_CACHE_3BITS);
- writel(val, EIP197_HIA_DFE(priv) + EIP197_HIA_DFE_CFG);
+ /* Reset all DFE threads */
+ writel(EIP197_DxE_THR_CTRL_RESET_PE,
+ EIP197_HIA_DFE_THR(priv) + EIP197_HIA_DFE_THR_CTRL(pe));
- /* Leave the DFE threads reset state */
- writel(0, EIP197_HIA_DFE_THR(priv) + EIP197_HIA_DFE_THR_CTRL);
+ if (priv->version == EIP197B) {
+ /* Reset HIA input interface arbiter */
+ writel(EIP197_HIA_RA_PE_CTRL_RESET,
+ EIP197_HIA_AIC(priv) + EIP197_HIA_RA_PE_CTRL(pe));
+ }
- /* Configure the procesing engine thresholds */
- writel(EIP197_PE_IN_xBUF_THRES_MIN(6) | EIP197_PE_IN_xBUF_THRES_MAX(9),
- EIP197_PE(priv) + EIP197_PE_IN_DBUF_THRES);
- writel(EIP197_PE_IN_xBUF_THRES_MIN(6) | EIP197_PE_IN_xBUF_THRES_MAX(7),
- EIP197_PE(priv) + EIP197_PE_IN_TBUF_THRES);
+ /* DMA transfer size to use */
+ val = EIP197_HIA_DFE_CFG_DIS_DEBUG;
+ val |= EIP197_HIA_DxE_CFG_MIN_DATA_SIZE(6) |
+ EIP197_HIA_DxE_CFG_MAX_DATA_SIZE(9);
+ val |= EIP197_HIA_DxE_CFG_MIN_CTRL_SIZE(6) |
+ EIP197_HIA_DxE_CFG_MAX_CTRL_SIZE(7);
+ val |= EIP197_HIA_DxE_CFG_DATA_CACHE_CTRL(RD_CACHE_3BITS);
+ val |= EIP197_HIA_DxE_CFG_CTRL_CACHE_CTRL(RD_CACHE_3BITS);
+ writel(val, EIP197_HIA_DFE(priv) + EIP197_HIA_DFE_CFG(pe));
+
+ /* Leave the DFE threads reset state */
+ writel(0, EIP197_HIA_DFE_THR(priv) + EIP197_HIA_DFE_THR_CTRL(pe));
+
+ /* Configure the processing engine thresholds */
+ writel(EIP197_PE_IN_xBUF_THRES_MIN(6) |
+ EIP197_PE_IN_xBUF_THRES_MAX(9),
+ EIP197_PE(priv) + EIP197_PE_IN_DBUF_THRES(pe));
+ writel(EIP197_PE_IN_xBUF_THRES_MIN(6) |
+ EIP197_PE_IN_xBUF_THRES_MAX(7),
+ EIP197_PE(priv) + EIP197_PE_IN_TBUF_THRES(pe));
+
+ if (priv->version == EIP197B) {
+ /* enable HIA input interface arbiter and rings */
+ writel(EIP197_HIA_RA_PE_CTRL_EN |
+ GENMASK(priv->config.rings - 1, 0),
+ EIP197_HIA_AIC(priv) + EIP197_HIA_RA_PE_CTRL(pe));
+ }
- if (priv->version == EIP197B) {
- /* enable HIA input interface arbiter and rings */
- writel(EIP197_HIA_RA_PE_CTRL_EN |
- GENMASK(priv->config.rings - 1, 0),
- EIP197_HIA_AIC(priv) + EIP197_HIA_RA_PE_CTRL);
+ /* Data Store Engine configuration */
+
+ /* Reset all DSE threads */
+ writel(EIP197_DxE_THR_CTRL_RESET_PE,
+ EIP197_HIA_DSE_THR(priv) + EIP197_HIA_DSE_THR_CTRL(pe));
+
+ /* Wait for all DSE threads to complete */
+ while ((readl(EIP197_HIA_DSE_THR(priv) + EIP197_HIA_DSE_THR_STAT(pe)) &
+ GENMASK(15, 12)) != GENMASK(15, 12))
+ ;
+
+ /* DMA transfer size to use */
+ val = EIP197_HIA_DSE_CFG_DIS_DEBUG;
+ val |= EIP197_HIA_DxE_CFG_MIN_DATA_SIZE(7) |
+ EIP197_HIA_DxE_CFG_MAX_DATA_SIZE(8);
+ val |= EIP197_HIA_DxE_CFG_DATA_CACHE_CTRL(WR_CACHE_3BITS);
+ val |= EIP197_HIA_DSE_CFG_ALWAYS_BUFFERABLE;
+ /* FIXME: instability issues can occur for EIP97 but disabling it impact
+ * performances.
+ */
+ if (priv->version == EIP197B)
+ val |= EIP197_HIA_DSE_CFG_EN_SINGLE_WR;
+ writel(val, EIP197_HIA_DSE(priv) + EIP197_HIA_DSE_CFG(pe));
+
+ /* Leave the DSE threads reset state */
+ writel(0, EIP197_HIA_DSE_THR(priv) + EIP197_HIA_DSE_THR_CTRL(pe));
+
+ /* Configure the procesing engine thresholds */
+ writel(EIP197_PE_OUT_DBUF_THRES_MIN(7) |
+ EIP197_PE_OUT_DBUF_THRES_MAX(8),
+ EIP197_PE(priv) + EIP197_PE_OUT_DBUF_THRES(pe));
+
+ /* Processing Engine configuration */
+
+ /* H/W capabilities selection */
+ val = EIP197_FUNCTION_RSVD;
+ val |= EIP197_PROTOCOL_ENCRYPT_ONLY | EIP197_PROTOCOL_HASH_ONLY;
+ val |= EIP197_PROTOCOL_ENCRYPT_HASH | EIP197_PROTOCOL_HASH_DECRYPT;
+ val |= EIP197_ALG_AES_ECB | EIP197_ALG_AES_CBC;
+ val |= EIP197_ALG_SHA1 | EIP197_ALG_HMAC_SHA1;
+ val |= EIP197_ALG_SHA2 | EIP197_ALG_HMAC_SHA2;
+ writel(val, EIP197_PE(priv) + EIP197_PE_EIP96_FUNCTION_EN(pe));
}
- /* Data Store Engine configuration */
-
- /* Reset all DSE threads */
- writel(EIP197_DxE_THR_CTRL_RESET_PE,
- EIP197_HIA_DSE_THR(priv) + EIP197_HIA_DSE_THR_CTRL);
-
- /* Wait for all DSE threads to complete */
- while ((readl(EIP197_HIA_DSE_THR(priv) + EIP197_HIA_DSE_THR_STAT) &
- GENMASK(15, 12)) != GENMASK(15, 12))
- ;
-
- /* DMA transfer size to use */
- val = EIP197_HIA_DSE_CFG_DIS_DEBUG;
- val |= EIP197_HIA_DxE_CFG_MIN_DATA_SIZE(7) | EIP197_HIA_DxE_CFG_MAX_DATA_SIZE(8);
- val |= EIP197_HIA_DxE_CFG_DATA_CACHE_CTRL(WR_CACHE_3BITS);
- val |= EIP197_HIA_DSE_CFG_ALWAYS_BUFFERABLE;
- /* FIXME: instability issues can occur for EIP97 but disabling it impact
- * performances.
- */
- if (priv->version == EIP197B)
- val |= EIP197_HIA_DSE_CFG_EN_SINGLE_WR;
- writel(val, EIP197_HIA_DSE(priv) + EIP197_HIA_DSE_CFG);
-
- /* Leave the DSE threads reset state */
- writel(0, EIP197_HIA_DSE_THR(priv) + EIP197_HIA_DSE_THR_CTRL);
-
- /* Configure the procesing engine thresholds */
- writel(EIP197_PE_OUT_DBUF_THRES_MIN(7) | EIP197_PE_OUT_DBUF_THRES_MAX(8),
- EIP197_PE(priv) + EIP197_PE_OUT_DBUF_THRES);
-
- /* Processing Engine configuration */
-
- /* H/W capabilities selection */
- val = EIP197_FUNCTION_RSVD;
- val |= EIP197_PROTOCOL_ENCRYPT_ONLY | EIP197_PROTOCOL_HASH_ONLY;
- val |= EIP197_PROTOCOL_ENCRYPT_HASH | EIP197_PROTOCOL_HASH_DECRYPT;
- val |= EIP197_ALG_AES_ECB | EIP197_ALG_AES_CBC;
- val |= EIP197_ALG_SHA1 | EIP197_ALG_HMAC_SHA1;
- val |= EIP197_ALG_SHA2 | EIP197_ALG_HMAC_SHA2;
- writel(val, EIP197_PE(priv) + EIP197_PE_EIP96_FUNCTION_EN);
-
/* Command Descriptor Rings prepare */
for (i = 0; i < priv->config.rings; i++) {
/* Clear interrupts for this ring */
@@ -414,13 +427,15 @@ static int safexcel_hw_init(struct safexcel_crypto_priv *priv)
EIP197_HIA_RDR(priv, i) + EIP197_HIA_xDR_RING_SIZE);
}
- /* Enable command descriptor rings */
- writel(EIP197_DxE_THR_CTRL_EN | GENMASK(priv->config.rings - 1, 0),
- EIP197_HIA_DFE_THR(priv) + EIP197_HIA_DFE_THR_CTRL);
+ for (pe = 0; pe < priv->config.pes; pe++) {
+ /* Enable command descriptor rings */
+ writel(EIP197_DxE_THR_CTRL_EN | GENMASK(priv->config.rings - 1, 0),
+ EIP197_HIA_DFE_THR(priv) + EIP197_HIA_DFE_THR_CTRL(pe));
- /* Enable result descriptor rings */
- writel(EIP197_DxE_THR_CTRL_EN | GENMASK(priv->config.rings - 1, 0),
- EIP197_HIA_DSE_THR(priv) + EIP197_HIA_DSE_THR_CTRL);
+ /* Enable result descriptor rings */
+ writel(EIP197_DxE_THR_CTRL_EN | GENMASK(priv->config.rings - 1, 0),
+ EIP197_HIA_DSE_THR(priv) + EIP197_HIA_DSE_THR_CTRL(pe));
+ }
/* Clear any HIA interrupt */
writel(GENMASK(30, 20), EIP197_HIA_AIC_G(priv) + EIP197_HIA_AIC_G_ACK);
@@ -868,9 +883,20 @@ static void safexcel_unregister_algorithms(struct safexcel_crypto_priv *priv)
static void safexcel_configure(struct safexcel_crypto_priv *priv)
{
- u32 val, mask;
+ u32 val, mask = 0;
val = readl(EIP197_HIA_AIC_G(priv) + EIP197_HIA_OPTIONS);
+
+ /* Read number of PEs from the engine */
+ switch (priv->version) {
+ case EIP197B:
+ mask = EIP197_N_PES_MASK;
+ break;
+ default:
+ mask = EIP97_N_PES_MASK;
+ }
+ priv->config.pes = (val >> EIP197_N_PES_OFFSET) & mask;
+
val = (val & GENMASK(27, 25)) >> 25;
mask = BIT(val) - 1;
diff --git a/drivers/crypto/inside-secure/safexcel.h b/drivers/crypto/inside-secure/safexcel.h
index f370f055fd80..4b7445b1af22 100644
--- a/drivers/crypto/inside-secure/safexcel.h
+++ b/drivers/crypto/inside-secure/safexcel.h
@@ -95,13 +95,13 @@
#define EIP197_HIA_xDR_STAT 0x003c
/* register offsets */
-#define EIP197_HIA_DFE_CFG 0x0000
-#define EIP197_HIA_DFE_THR_CTRL 0x0000
-#define EIP197_HIA_DFE_THR_STAT 0x0004
-#define EIP197_HIA_DSE_CFG 0x0000
-#define EIP197_HIA_DSE_THR_CTRL 0x0000
-#define EIP197_HIA_DSE_THR_STAT 0x0004
-#define EIP197_HIA_RA_PE_CTRL 0x0010
+#define EIP197_HIA_DFE_CFG(n) (0x0000 + (128 * (n)))
+#define EIP197_HIA_DFE_THR_CTRL(n) (0x0000 + (128 * (n)))
+#define EIP197_HIA_DFE_THR_STAT(n) (0x0004 + (128 * (n)))
+#define EIP197_HIA_DSE_CFG(n) (0x0000 + (128 * (n)))
+#define EIP197_HIA_DSE_THR_CTRL(n) (0x0000 + (128 * (n)))
+#define EIP197_HIA_DSE_THR_STAT(n) (0x0004 + (128 * (n)))
+#define EIP197_HIA_RA_PE_CTRL(n) (0x0010 + (8 * (n)))
#define EIP197_HIA_RA_PE_STAT 0x0014
#define EIP197_HIA_AIC_R_OFF(r) ((r) * 0x1000)
#define EIP197_HIA_AIC_R_ENABLE_CTRL(r) (0xe008 - EIP197_HIA_AIC_R_OFF(r))
@@ -114,18 +114,18 @@
#define EIP197_HIA_MST_CTRL 0xfff4
#define EIP197_HIA_OPTIONS 0xfff8
#define EIP197_HIA_VERSION 0xfffc
-#define EIP197_PE_IN_DBUF_THRES 0x0000
-#define EIP197_PE_IN_TBUF_THRES 0x0100
-#define EIP197_PE_ICE_SCRATCH_RAM 0x0800
-#define EIP197_PE_ICE_PUE_CTRL 0x0c80
-#define EIP197_PE_ICE_SCRATCH_CTRL 0x0d04
-#define EIP197_PE_ICE_FPP_CTRL 0x0d80
-#define EIP197_PE_ICE_RAM_CTRL 0x0ff0
-#define EIP197_PE_EIP96_FUNCTION_EN 0x1004
-#define EIP197_PE_EIP96_CONTEXT_CTRL 0x1008
-#define EIP197_PE_EIP96_CONTEXT_STAT 0x100c
-#define EIP197_PE_OUT_DBUF_THRES 0x1c00
-#define EIP197_PE_OUT_TBUF_THRES 0x1d00
+#define EIP197_PE_IN_DBUF_THRES(n) (0x0000 + (0x2000 * (n)))
+#define EIP197_PE_IN_TBUF_THRES(n) (0x0100 + (0x2000 * (n)))
+#define EIP197_PE_ICE_SCRATCH_RAM(n) (0x0800 + (0x2000 * (n)))
+#define EIP197_PE_ICE_PUE_CTRL(n) (0x0c80 + (0x2000 * (n)))
+#define EIP197_PE_ICE_SCRATCH_CTRL(n) (0x0d04 + (0x2000 * (n)))
+#define EIP197_PE_ICE_FPP_CTRL(n) (0x0d80 + (0x2000 * (n)))
+#define EIP197_PE_ICE_RAM_CTRL(n) (0x0ff0 + (0x2000 * (n)))
+#define EIP197_PE_EIP96_FUNCTION_EN(n) (0x1004 + (0x2000 * (n)))
+#define EIP197_PE_EIP96_CONTEXT_CTRL(n) (0x1008 + (0x2000 * (n)))
+#define EIP197_PE_EIP96_CONTEXT_STAT(n) (0x100c + (0x2000 * (n)))
+#define EIP197_PE_OUT_DBUF_THRES(n) (0x1c00 + (0x2000 * (n)))
+#define EIP197_PE_OUT_TBUF_THRES(n) (0x1d00 + (0x2000 * (n)))
#define EIP197_MST_CTRL 0xfff4
/* EIP197-specific registers, no indirection */
@@ -184,6 +184,11 @@
#define EIP197_HIA_RA_PE_CTRL_RESET BIT(31)
#define EIP197_HIA_RA_PE_CTRL_EN BIT(30)
+/* EIP197_HIA_OPTIONS */
+#define EIP197_N_PES_OFFSET 4
+#define EIP197_N_PES_MASK GENMASK(4, 0)
+#define EIP97_N_PES_MASK GENMASK(2, 0)
+
/* EIP197_HIA_AIC_R_ENABLE_CTRL */
#define EIP197_CDR_IRQ(n) BIT((n) * 2)
#define EIP197_RDR_IRQ(n) BIT((n) * 2 + 1)
@@ -513,6 +518,7 @@ struct safexcel_request {
};
struct safexcel_config {
+ u32 pes;
u32 rings;
u32 cd_size;
--
2.17.1
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