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Message-Id: <20150305164606.C9E3A1A2421@localhost.localdomain>
Date: Thu, 5 Mar 2015 17:46:06 +0100 (CET)
From: Christophe Leroy <christophe.leroy@....fr>
To: Kim Phillips <kim.phillips@...escale.com>,
Herbert Xu <herbert@...dor.apana.org.au>,
"David S. Miller" <davem@...emloft.net>
CC: linux-kernel@...r.kernel.org, linuxppc-dev@...ts.ozlabs.org,
linux-crypto@...r.kernel.org
Subject: [PATCH 08/17] crypto: talitos - Deport SEC2 error handling
SEC2 and SEC1 error handling will be different because so many bits are
different. So we move error handling into talitos2.c
Signed-off-by: Christophe Leroy <christophe.leroy@....fr>
---
drivers/crypto/talitos.c | 103 +++++-----------------------------------------
drivers/crypto/talitos.h | 8 ++++
drivers/crypto/talitos2.c | 82 ++++++++++++++++++++++++++++++++++++
3 files changed, 101 insertions(+), 92 deletions(-)
diff --git a/drivers/crypto/talitos.c b/drivers/crypto/talitos.c
index 32848e5..de31ab0 100644
--- a/drivers/crypto/talitos.c
+++ b/drivers/crypto/talitos.c
@@ -68,7 +68,7 @@ static unsigned int do_reset_channel(struct talitos_private *priv, int ch)
return timeout;
}
-static int reset_channel(struct device *dev, int ch)
+int talitos_reset_channel(struct device *dev, int ch)
{
struct talitos_private *priv = dev_get_drvdata(dev);
unsigned int timeout = do_reset_channel(priv, ch);
@@ -124,7 +124,7 @@ static void do_init_device(struct talitos_private *priv)
setbits32(priv->reg + TALITOS_IMR_LO, TALITOS_IMR_LO_INIT);
}
-static int init_device(struct device *dev)
+int talitos_init_device(struct device *dev)
{
struct talitos_private *priv = dev_get_drvdata(dev);
int ch, err;
@@ -145,7 +145,7 @@ static int init_device(struct device *dev)
/* reset channels */
for (ch = 0; ch < priv->num_channels; ch++) {
- err = reset_channel(dev, ch);
+ err = talitos_reset_channel(dev, ch);
if (err)
return err;
}
@@ -223,7 +223,7 @@ EXPORT_SYMBOL(talitos_submit);
/*
* process what was done, notify callback of error if not
*/
-static void flush_channel(struct device *dev, int ch, int error, int reset_ch)
+void talitos_flush_channel(struct device *dev, int ch, int error, int reset_ch)
{
struct talitos_private *priv = dev_get_drvdata(dev);
struct talitos_request *request, saved_req;
@@ -289,15 +289,15 @@ static void talitos_done_##name(unsigned long data) \
unsigned long flags; \
\
if (ch_done_mask & 1) \
- flush_channel(dev, 0, 0, 0); \
+ talitos_flush_channel(dev, 0, 0, 0); \
if (priv->num_channels == 1) \
goto out; \
if (ch_done_mask & (1 << 2)) \
- flush_channel(dev, 1, 0, 0); \
+ talitos_flush_channel(dev, 1, 0, 0); \
if (ch_done_mask & (1 << 4)) \
- flush_channel(dev, 2, 0, 0); \
+ talitos_flush_channel(dev, 2, 0, 0); \
if (ch_done_mask & (1 << 6)) \
- flush_channel(dev, 3, 0, 0); \
+ talitos_flush_channel(dev, 3, 0, 0); \
\
out: \
/* At this point, all completed channels have been processed */ \
@@ -345,10 +345,11 @@ static u32 current_desc_hdr(struct device *dev, int ch)
/*
* user diagnostics; report root cause of error based on execution unit status
*/
-static void report_eu_error(struct device *dev, int ch, u32 desc_hdr)
+void talitos_report_eu_error(struct device *dev, int ch)
{
struct talitos_private *priv = dev_get_drvdata(dev);
int i;
+ u32 desc_hdr = current_desc_hdr(dev, ch);
if (!desc_hdr)
desc_hdr = in_be32(priv->chan[ch].reg + TALITOS_DESCBUF);
@@ -417,88 +418,6 @@ static void report_eu_error(struct device *dev, int ch, u32 desc_hdr)
in_be32(priv->chan[ch].reg + TALITOS_DESCBUF_LO + 8*i));
}
-/*
- * recover from error interrupts
- */
-static void talitos_error(struct device *dev, u32 isr, u32 isr_lo)
-{
- struct talitos_private *priv = dev_get_drvdata(dev);
- unsigned int timeout = TALITOS_TIMEOUT;
- int ch, error, reset_dev = 0, reset_ch = 0;
- u32 v, v_lo;
-
- for (ch = 0; ch < priv->num_channels; ch++) {
- /* skip channels without errors */
- if (!(isr & (1 << (ch * 2 + 1))))
- continue;
-
- error = -EINVAL;
-
- v = in_be32(priv->chan[ch].reg + TALITOS_CCPSR);
- v_lo = in_be32(priv->chan[ch].reg + TALITOS_CCPSR_LO);
-
- if (v_lo & TALITOS_CCPSR_LO_DOF) {
- dev_err(dev, "double fetch fifo overflow error\n");
- error = -EAGAIN;
- reset_ch = 1;
- }
- if (v_lo & TALITOS_CCPSR_LO_SOF) {
- /* h/w dropped descriptor */
- dev_err(dev, "single fetch fifo overflow error\n");
- error = -EAGAIN;
- }
- if (v_lo & TALITOS_CCPSR_LO_MDTE)
- dev_err(dev, "master data transfer error\n");
- if (v_lo & TALITOS_CCPSR_LO_SGDLZ)
- dev_err(dev, "s/g data length zero error\n");
- if (v_lo & TALITOS_CCPSR_LO_FPZ)
- dev_err(dev, "fetch pointer zero error\n");
- if (v_lo & TALITOS_CCPSR_LO_IDH)
- dev_err(dev, "illegal descriptor header error\n");
- if (v_lo & TALITOS_CCPSR_LO_IEU)
- dev_err(dev, "invalid execution unit error\n");
- if (v_lo & TALITOS_CCPSR_LO_EU)
- report_eu_error(dev, ch, current_desc_hdr(dev, ch));
- if (v_lo & TALITOS_CCPSR_LO_GB)
- dev_err(dev, "gather boundary error\n");
- if (v_lo & TALITOS_CCPSR_LO_GRL)
- dev_err(dev, "gather return/length error\n");
- if (v_lo & TALITOS_CCPSR_LO_SB)
- dev_err(dev, "scatter boundary error\n");
- if (v_lo & TALITOS_CCPSR_LO_SRL)
- dev_err(dev, "scatter return/length error\n");
-
- flush_channel(dev, ch, error, reset_ch);
-
- if (reset_ch) {
- reset_channel(dev, ch);
- } else {
- setbits32(priv->chan[ch].reg + TALITOS_CCCR,
- TALITOS_CCCR_CONT);
- setbits32(priv->chan[ch].reg + TALITOS_CCCR_LO, 0);
- while ((in_be32(priv->chan[ch].reg + TALITOS_CCCR) &
- TALITOS_CCCR_CONT) && --timeout)
- cpu_relax();
- if (timeout == 0) {
- dev_err(dev, "failed to restart channel %d\n",
- ch);
- reset_dev = 1;
- }
- }
- }
- if (reset_dev || isr & ~TALITOS_ISR_4CHERR || isr_lo) {
- dev_err(dev, "done overflow, internal time out, or rngu error: "
- "ISR 0x%08x_%08x\n", isr, isr_lo);
-
- /* purge request queues */
- for (ch = 0; ch < priv->num_channels; ch++)
- flush_channel(dev, ch, -EIO, 1);
-
- /* reset and reinitialize the device */
- init_device(dev);
- }
-}
-
#define DEF_TALITOS_INTERRUPT(name, ch_done_mask, ch_err_mask, tlet) \
static irqreturn_t talitos_interrupt_##name(int irq, void *data) \
{ \
@@ -2106,7 +2025,7 @@ static int talitos_probe(struct platform_device *ofdev)
dma_set_mask(dev, DMA_BIT_MASK(36));
/* reset and initialize the h/w */
- err = init_device(dev);
+ err = talitos_init_device(dev);
if (err) {
dev_err(dev, "failed to initialize device\n");
goto err_out;
diff --git a/drivers/crypto/talitos.h b/drivers/crypto/talitos.h
index 46233cb..f95e4bc 100644
--- a/drivers/crypto/talitos.h
+++ b/drivers/crypto/talitos.h
@@ -145,6 +145,14 @@ extern struct talitos_edesc *talitos_edesc_alloc(struct device *dev,
int icv_stashing,
u32 cryptoflags,
bool encrypt);
+
+extern int talitos_reset_channel(struct device *dev, int ch);
+extern int talitos_init_device(struct device *dev);
+extern void talitos_flush_channel(struct device *dev, int ch, int error,
+ int reset_ch);
+extern void talitos_report_eu_error(struct device *dev, int ch);
+extern void talitos_error(struct device *dev, u32 isr, u32 isr_lo);
+
extern int talitos_cra_init(struct crypto_tfm *tfm);
/* .features flag */
diff --git a/drivers/crypto/talitos2.c b/drivers/crypto/talitos2.c
index 024cbbd..80f6bc0 100644
--- a/drivers/crypto/talitos2.c
+++ b/drivers/crypto/talitos2.c
@@ -183,6 +183,88 @@ void map_sg_out_talitos_ptr(struct device *dev, struct scatterlist *dst,
}
}
+/*
+ * recover from error interrupts
+ */
+void talitos_error(struct device *dev, u32 isr, u32 isr_lo)
+{
+ struct talitos_private *priv = dev_get_drvdata(dev);
+ unsigned int timeout = TALITOS_TIMEOUT;
+ int ch, error, reset_dev = 0, reset_ch = 0;
+ u32 v, v_lo;
+
+ for (ch = 0; ch < priv->num_channels; ch++) {
+ /* skip channels without errors */
+ if (!(isr & (1 << (ch * 2 + 1))))
+ continue;
+
+ error = -EINVAL;
+
+ v = in_be32(priv->chan[ch].reg + TALITOS_CCPSR);
+ v_lo = in_be32(priv->chan[ch].reg + TALITOS_CCPSR_LO);
+
+ if (v_lo & TALITOS_CCPSR_LO_DOF) {
+ dev_err(dev, "double fetch fifo overflow error\n");
+ error = -EAGAIN;
+ reset_ch = 1;
+ }
+ if (v_lo & TALITOS_CCPSR_LO_SOF) {
+ /* h/w dropped descriptor */
+ dev_err(dev, "single fetch fifo overflow error\n");
+ error = -EAGAIN;
+ }
+ if (v_lo & TALITOS_CCPSR_LO_MDTE)
+ dev_err(dev, "master data transfer error\n");
+ if (v_lo & TALITOS_CCPSR_LO_SGDLZ)
+ dev_err(dev, "s/g data length zero error\n");
+ if (v_lo & TALITOS_CCPSR_LO_FPZ)
+ dev_err(dev, "fetch pointer zero error\n");
+ if (v_lo & TALITOS_CCPSR_LO_IDH)
+ dev_err(dev, "illegal descriptor header error\n");
+ if (v_lo & TALITOS_CCPSR_LO_IEU)
+ dev_err(dev, "invalid execution unit error\n");
+ if (v_lo & TALITOS_CCPSR_LO_EU)
+ talitos_report_eu_error(dev, ch);
+ if (v_lo & TALITOS_CCPSR_LO_GB)
+ dev_err(dev, "gather boundary error\n");
+ if (v_lo & TALITOS_CCPSR_LO_GRL)
+ dev_err(dev, "gather return/length error\n");
+ if (v_lo & TALITOS_CCPSR_LO_SB)
+ dev_err(dev, "scatter boundary error\n");
+ if (v_lo & TALITOS_CCPSR_LO_SRL)
+ dev_err(dev, "scatter return/length error\n");
+
+ talitos_flush_channel(dev, ch, error, reset_ch);
+
+ if (reset_ch) {
+ talitos_reset_channel(dev, ch);
+ } else {
+ setbits32(priv->chan[ch].reg + TALITOS_CCCR,
+ TALITOS_CCCR_CONT);
+ setbits32(priv->chan[ch].reg + TALITOS_CCCR_LO, 0);
+ while ((in_be32(priv->chan[ch].reg + TALITOS_CCCR) &
+ TALITOS_CCCR_CONT) && --timeout)
+ cpu_relax();
+ if (timeout == 0) {
+ dev_err(dev, "failed to restart channel %d\n",
+ ch);
+ reset_dev = 1;
+ }
+ }
+ }
+ if (reset_dev || isr & ~TALITOS_ISR_4CHERR || isr_lo) {
+ dev_err(dev, "done overflow, internal time out, or rngu error: "
+ "ISR 0x%08x_%08x\n", isr, isr_lo);
+
+ /* purge request queues */
+ for (ch = 0; ch < priv->num_channels; ch++)
+ talitos_flush_channel(dev, ch, -EIO, 1);
+
+ /* reset and reinitialize the device */
+ talitos_init_device(dev);
+ }
+}
+
int aead_setauthsize(struct crypto_aead *authenc,
unsigned int authsize)
{
--
2.1.0
--
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