diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/crypto/talitos.c | 207 | ||||
| -rw-r--r-- | drivers/crypto/talitos.h | 14 |
2 files changed, 149 insertions, 72 deletions
diff --git a/drivers/crypto/talitos.c b/drivers/crypto/talitos.c index 7f82e91e461c..92c0ca75400d 100644 --- a/drivers/crypto/talitos.c +++ b/drivers/crypto/talitos.c @@ -122,7 +122,7 @@ struct talitos_private { struct device *dev; struct platform_device *ofdev; void __iomem *reg; - int irq; + int irq[2]; /* SEC version geometry (from device tree node) */ unsigned int num_channels; @@ -146,7 +146,7 @@ struct talitos_private { atomic_t last_chan ____cacheline_aligned; /* request callback tasklet */ - struct tasklet_struct done_task; + struct tasklet_struct done_task[2]; /* list of registered algorithms */ struct list_head alg_list; @@ -226,13 +226,19 @@ static int reset_device(struct device *dev) { struct talitos_private *priv = dev_get_drvdata(dev); unsigned int timeout = TALITOS_TIMEOUT; + u32 mcr = TALITOS_MCR_SWR; - setbits32(priv->reg + TALITOS_MCR, TALITOS_MCR_SWR); + setbits32(priv->reg + TALITOS_MCR, mcr); while ((in_be32(priv->reg + TALITOS_MCR) & TALITOS_MCR_SWR) && --timeout) cpu_relax(); + if (priv->irq[1] != NO_IRQ) { + mcr = TALITOS_MCR_RCA1 | TALITOS_MCR_RCA3; + setbits32(priv->reg + TALITOS_MCR, mcr); + } + if (timeout == 0) { dev_err(dev, "failed to reset device\n"); return -EIO; @@ -401,21 +407,32 @@ static void flush_channel(struct device *dev, int ch, int error, int reset_ch) /* * process completed requests for channels that have done status */ -static void talitos_done(unsigned long data) -{ - struct device *dev = (struct device *)data; - struct talitos_private *priv = dev_get_drvdata(dev); - int ch; - - for (ch = 0; ch < priv->num_channels; ch++) - flush_channel(dev, ch, 0, 0); - - /* At this point, all completed channels have been processed. - * Unmask done interrupts for channels completed later on. - */ - setbits32(priv->reg + TALITOS_IMR, TALITOS_IMR_INIT); - setbits32(priv->reg + TALITOS_IMR_LO, TALITOS_IMR_LO_INIT); -} +#define DEF_TALITOS_DONE(name, ch_done_mask) \ +static void talitos_done_##name(unsigned long data) \ +{ \ + struct device *dev = (struct device *)data; \ + struct talitos_private *priv = dev_get_drvdata(dev); \ + \ + if (ch_done_mask & 1) \ + 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); \ + if (ch_done_mask & (1 << 4)) \ + flush_channel(dev, 2, 0, 0); \ + if (ch_done_mask & (1 << 6)) \ + flush_channel(dev, 3, 0, 0); \ + \ +out: \ + /* At this point, all completed channels have been processed */ \ + /* Unmask done interrupts for channels completed later on. */ \ + setbits32(priv->reg + TALITOS_IMR, ch_done_mask); \ + setbits32(priv->reg + TALITOS_IMR_LO, TALITOS_IMR_LO_INIT); \ +} +DEF_TALITOS_DONE(4ch, TALITOS_ISR_4CHDONE) +DEF_TALITOS_DONE(ch0_2, TALITOS_ISR_CH_0_2_DONE) +DEF_TALITOS_DONE(ch1_3, TALITOS_ISR_CH_1_3_DONE) /* * locate current (offending) descriptor @@ -584,7 +601,7 @@ static void talitos_error(unsigned long data, u32 isr, u32 isr_lo) } } } - if (reset_dev || isr & ~TALITOS_ISR_CHERR || isr_lo) { + 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); @@ -597,30 +614,35 @@ static void talitos_error(unsigned long data, u32 isr, u32 isr_lo) } } -static irqreturn_t talitos_interrupt(int irq, void *data) -{ - struct device *dev = data; - struct talitos_private *priv = dev_get_drvdata(dev); - u32 isr, isr_lo; - - isr = in_be32(priv->reg + TALITOS_ISR); - isr_lo = in_be32(priv->reg + TALITOS_ISR_LO); - /* Acknowledge interrupt */ - out_be32(priv->reg + TALITOS_ICR, isr); - out_be32(priv->reg + TALITOS_ICR_LO, isr_lo); - - if (unlikely((isr & ~TALITOS_ISR_CHDONE) || isr_lo)) - talitos_error((unsigned long)data, isr, isr_lo); - else - if (likely(isr & TALITOS_ISR_CHDONE)) { - /* mask further done interrupts. */ - clrbits32(priv->reg + TALITOS_IMR, TALITOS_IMR_DONE); - /* done_task will unmask done interrupts at exit */ - tasklet_schedule(&priv->done_task); - } - - return (isr || isr_lo) ? IRQ_HANDLED : IRQ_NONE; -} +#define DEF_TALITOS_INTERRUPT(name, ch_done_mask, ch_err_mask, tlet) \ +static irqreturn_t talitos_interrupt_##name(int irq, void *data) \ +{ \ + struct device *dev = data; \ + struct talitos_private *priv = dev_get_drvdata(dev); \ + u32 isr, isr_lo; \ + \ + isr = in_be32(priv->reg + TALITOS_ISR); \ + isr_lo = in_be32(priv->reg + TALITOS_ISR_LO); \ + /* Acknowledge interrupt */ \ + out_be32(priv->reg + TALITOS_ICR, isr & (ch_done_mask | ch_err_mask)); \ + out_be32(priv->reg + TALITOS_ICR_LO, isr_lo); \ + \ + if (unlikely((isr & ~TALITOS_ISR_4CHDONE) & ch_err_mask || isr_lo)) \ + talitos_error((unsigned long)data, isr, isr_lo); \ + else \ + if (likely(isr & ch_done_mask)) { \ + /* mask further done interrupts. */ \ + clrbits32(priv->reg + TALITOS_IMR, ch_done_mask); \ + /* done_task will unmask done interrupts at exit */ \ + tasklet_schedule(&priv->done_task[tlet]); \ + } \ + \ + return (isr & (ch_done_mask | ch_err_mask) || isr_lo) ? IRQ_HANDLED : \ + IRQ_NONE; \ +} +DEF_TALITOS_INTERRUPT(4ch, TALITOS_ISR_4CHDONE, TALITOS_ISR_4CHERR, 0) +DEF_TALITOS_INTERRUPT(ch0_2, TALITOS_ISR_CH_0_2_DONE, TALITOS_ISR_CH_0_2_ERR, 0) +DEF_TALITOS_INTERRUPT(ch1_3, TALITOS_ISR_CH_1_3_DONE, TALITOS_ISR_CH_1_3_ERR, 1) /* * hwrng @@ -2558,12 +2580,15 @@ static int talitos_remove(struct platform_device *ofdev) kfree(priv->chan); - if (priv->irq != NO_IRQ) { - free_irq(priv->irq, dev); - irq_dispose_mapping(priv->irq); - } + for (i = 0; i < 2; i++) + if (priv->irq[i] != NO_IRQ) { + free_irq(priv->irq[i], dev); + irq_dispose_mapping(priv->irq[i]); + } - tasklet_kill(&priv->done_task); + tasklet_kill(&priv->done_task[0]); + if (priv->irq[1] != NO_IRQ) + tasklet_kill(&priv->done_task[1]); iounmap(priv->reg); @@ -2628,6 +2653,54 @@ static struct talitos_crypto_alg *talitos_alg_alloc(struct device *dev, return t_alg; } +static int talitos_probe_irq(struct platform_device *ofdev) +{ + struct device *dev = &ofdev->dev; + struct device_node *np = ofdev->dev.of_node; + struct talitos_private *priv = dev_get_drvdata(dev); + int err; + + priv->irq[0] = irq_of_parse_and_map(np, 0); + if (priv->irq[0] == NO_IRQ) { + dev_err(dev, "failed to map irq\n"); + return -EINVAL; + } + + priv->irq[1] = irq_of_parse_and_map(np, 1); + + /* get the primary irq line */ + if (priv->irq[1] == NO_IRQ) { + err = request_irq(priv->irq[0], talitos_interrupt_4ch, 0, + dev_driver_string(dev), dev); + goto primary_out; + } + + err = request_irq(priv->irq[0], talitos_interrupt_ch0_2, 0, + dev_driver_string(dev), dev); + if (err) + goto primary_out; + + /* get the secondary irq line */ + err = request_irq(priv->irq[1], talitos_interrupt_ch1_3, 0, + dev_driver_string(dev), dev); + if (err) { + dev_err(dev, "failed to request secondary irq\n"); + irq_dispose_mapping(priv->irq[1]); + priv->irq[1] = NO_IRQ; + } + + return err; + +primary_out: + if (err) { + dev_err(dev, "failed to request primary irq\n"); + irq_dispose_mapping(priv->irq[0]); + priv->irq[0] = NO_IRQ; + } + + return err; +} + static int talitos_probe(struct platform_device *ofdev) { struct device *dev = &ofdev->dev; @@ -2644,28 +2717,22 @@ static int talitos_probe(struct platform_device *ofdev) priv->ofdev = ofdev; - tasklet_init(&priv->done_task, talitos_done, (unsigned long)dev); - - INIT_LIST_HEAD(&priv->alg_list); - - priv->irq = irq_of_parse_and_map(np, 0); - - if (priv->irq == NO_IRQ) { - dev_err(dev, "failed to map irq\n"); - err = -EINVAL; + err = talitos_probe_irq(ofdev); + if (err) goto err_out; - } - /* get the irq line */ - err = request_irq(priv->irq, talitos_interrupt, 0, - dev_driver_string(dev), dev); - if (err) { - dev_err(dev, "failed to request irq %d\n", priv->irq); - irq_dispose_mapping(priv->irq); - priv->irq = NO_IRQ; - goto err_out; + if (priv->irq[1] == NO_IRQ) { + tasklet_init(&priv->done_task[0], talitos_done_4ch, + (unsigned long)dev); + } else { + tasklet_init(&priv->done_task[0], talitos_done_ch0_2, + (unsigned long)dev); + tasklet_init(&priv->done_task[1], talitos_done_ch1_3, + (unsigned long)dev); } + INIT_LIST_HEAD(&priv->alg_list); + priv->reg = of_iomap(np, 0); if (!priv->reg) { dev_err(dev, "failed to of_iomap\n"); @@ -2713,9 +2780,11 @@ static int talitos_probe(struct platform_device *ofdev) goto err_out; } - for (i = 0; i < priv->num_channels; i++) - priv->chan[i].reg = priv->reg + TALITOS_CH_BASE_OFFSET + - TALITOS_CH_STRIDE * (i + 1); + for (i = 0; i < priv->num_channels; i++) { + priv->chan[i].reg = priv->reg + TALITOS_CH_STRIDE * (i + 1); + if ((priv->irq[1] == NO_IRQ) || !(i & 1)) + priv->chan[i].reg += TALITOS_CH_BASE_OFFSET; + } for (i = 0; i < priv->num_channels; i++) { spin_lock_init(&priv->chan[i].head_lock); diff --git a/drivers/crypto/talitos.h b/drivers/crypto/talitos.h index 3ed319da853c..3c173954ef29 100644 --- a/drivers/crypto/talitos.h +++ b/drivers/crypto/talitos.h @@ -34,16 +34,24 @@ /* global register offset addresses */ #define TALITOS_MCR 0x1030 /* master control register */ -#define TALITOS_MCR_LO 0x1038 +#define TALITOS_MCR_RCA0 (1 << 15) /* remap channel 0 */ +#define TALITOS_MCR_RCA1 (1 << 14) /* remap channel 1 */ +#define TALITOS_MCR_RCA2 (1 << 13) /* remap channel 2 */ +#define TALITOS_MCR_RCA3 (1 << 12) /* remap channel 3 */ #define TALITOS_MCR_SWR 0x1 /* s/w reset */ +#define TALITOS_MCR_LO 0x1034 #define TALITOS_IMR 0x1008 /* interrupt mask register */ #define TALITOS_IMR_INIT 0x100ff /* enable channel IRQs */ #define TALITOS_IMR_DONE 0x00055 /* done IRQs */ #define TALITOS_IMR_LO 0x100C #define TALITOS_IMR_LO_INIT 0x20000 /* allow RNGU error IRQs */ #define TALITOS_ISR 0x1010 /* interrupt status register */ -#define TALITOS_ISR_CHERR 0xaa /* channel errors mask */ -#define TALITOS_ISR_CHDONE 0x55 /* channel done mask */ +#define TALITOS_ISR_4CHERR 0xaa /* 4 channel errors mask */ +#define TALITOS_ISR_4CHDONE 0x55 /* 4 channel done mask */ +#define TALITOS_ISR_CH_0_2_ERR 0x22 /* channels 0, 2 errors mask */ +#define TALITOS_ISR_CH_0_2_DONE 0x11 /* channels 0, 2 done mask */ +#define TALITOS_ISR_CH_1_3_ERR 0x88 /* channels 1, 3 errors mask */ +#define TALITOS_ISR_CH_1_3_DONE 0x44 /* channels 1, 3 done mask */ #define TALITOS_ISR_LO 0x1014 #define TALITOS_ICR 0x1018 /* interrupt clear register */ #define TALITOS_ICR_LO 0x101C |