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Diffstat (limited to 'arch/cris/arch-v32/drivers/cryptocop.c')
-rw-r--r--arch/cris/arch-v32/drivers/cryptocop.c145
1 files changed, 80 insertions, 65 deletions
diff --git a/arch/cris/arch-v32/drivers/cryptocop.c b/arch/cris/arch-v32/drivers/cryptocop.c
index 1a071f17446..877da190823 100644
--- a/arch/cris/arch-v32/drivers/cryptocop.c
+++ b/arch/cris/arch-v32/drivers/cryptocop.c
@@ -1,8 +1,7 @@
-/* $Id: cryptocop.c,v 1.13 2005/04/21 17:27:55 henriken Exp $
- *
+/*
* Stream co-processor driver for the ETRAX FS
*
- * Copyright (C) 2003-2005 Axis Communications AB
+ * Copyright (C) 2003-2007 Axis Communications AB
*/
#include <linux/init.h>
@@ -17,7 +16,7 @@
#include <asm/uaccess.h>
#include <asm/io.h>
-#include <asm/atomic.h>
+#include <linux/atomic.h>
#include <linux/list.h>
#include <linux/interrupt.h>
@@ -25,17 +24,29 @@
#include <asm/signal.h>
#include <asm/irq.h>
-#include <asm/arch/dma.h>
-#include <asm/arch/hwregs/dma.h>
-#include <asm/arch/hwregs/reg_map.h>
-#include <asm/arch/hwregs/reg_rdwr.h>
-#include <asm/arch/hwregs/intr_vect_defs.h>
-
-#include <asm/arch/hwregs/strcop.h>
-#include <asm/arch/hwregs/strcop_defs.h>
-#include <asm/arch/cryptocop.h>
-
-
+#include <dma.h>
+#include <hwregs/dma.h>
+#include <hwregs/reg_map.h>
+#include <hwregs/reg_rdwr.h>
+#include <hwregs/intr_vect_defs.h>
+
+#include <hwregs/strcop.h>
+#include <hwregs/strcop_defs.h>
+#include <cryptocop.h>
+
+#ifdef CONFIG_ETRAXFS
+#define IN_DMA 9
+#define OUT_DMA 8
+#define IN_DMA_INST regi_dma9
+#define OUT_DMA_INST regi_dma8
+#define DMA_IRQ DMA9_INTR_VECT
+#else
+#define IN_DMA 3
+#define OUT_DMA 2
+#define IN_DMA_INST regi_dma3
+#define OUT_DMA_INST regi_dma2
+#define DMA_IRQ DMA3_INTR_VECT
+#endif
#define DESCR_ALLOC_PAD (31)
@@ -205,7 +216,7 @@ static int cryptocop_open(struct inode *, struct file *);
static int cryptocop_release(struct inode *, struct file *);
-static int cryptocop_ioctl(struct inode *inode, struct file *file,
+static long cryptocop_ioctl(struct file *file,
unsigned int cmd, unsigned long arg);
static void cryptocop_start_job(void);
@@ -267,10 +278,11 @@ static void print_user_dma_lists(struct cryptocop_dma_list_operation *dma_op);
const struct file_operations cryptocop_fops = {
- owner: THIS_MODULE,
- open: cryptocop_open,
- release: cryptocop_release,
- ioctl: cryptocop_ioctl
+ .owner = THIS_MODULE,
+ .open = cryptocop_open,
+ .release = cryptocop_release,
+ .unlocked_ioctl = cryptocop_ioctl,
+ .llseek = noop_llseek,
};
@@ -616,9 +628,9 @@ static int create_output_descriptors(struct cryptocop_operation *operation, int
cdesc->dma_descr->buf = (char*)virt_to_phys(operation->tfrm_op.indata[*iniov_ix].iov_base + *iniov_offset);
cdesc->dma_descr->after = cdesc->dma_descr->buf + dlength;
+ assert(desc_len >= dlength);
desc_len -= dlength;
*iniov_offset += dlength;
- assert(desc_len >= 0);
if (*iniov_offset >= operation->tfrm_op.indata[*iniov_ix].iov_len) {
*iniov_offset = 0;
++(*iniov_ix);
@@ -1382,11 +1394,10 @@ static int create_md5_pad(int alloc_flag, unsigned long long hashed_length, char
if (padlen < MD5_MIN_PAD_LENGTH) padlen += MD5_BLOCK_LENGTH;
- p = kmalloc(padlen, alloc_flag);
- if (!pad) return -ENOMEM;
+ p = kzalloc(padlen, alloc_flag);
+ if (!p) return -ENOMEM;
*p = 0x80;
- memset(p+1, 0, padlen - 1);
DEBUG(printk("create_md5_pad: hashed_length=%lld bits == %lld bytes\n", bit_length, hashed_length));
@@ -1414,11 +1425,10 @@ static int create_sha1_pad(int alloc_flag, unsigned long long hashed_length, cha
if (padlen < SHA1_MIN_PAD_LENGTH) padlen += SHA1_BLOCK_LENGTH;
- p = kmalloc(padlen, alloc_flag);
- if (!pad) return -ENOMEM;
+ p = kzalloc(padlen, alloc_flag);
+ if (!p) return -ENOMEM;
*p = 0x80;
- memset(p+1, 0, padlen - 1);
DEBUG(printk("create_sha1_pad: hashed_length=%lld bits == %lld bytes\n", bit_length, hashed_length));
@@ -1886,14 +1896,14 @@ static void cryptocop_do_tasklet(unsigned long unused)
}
static irqreturn_t
-dma_done_interrupt(int irq, void *dev_id, struct pt_regs * regs)
+dma_done_interrupt(int irq, void *dev_id)
{
struct cryptocop_prio_job *done_job;
reg_dma_rw_ack_intr ack_intr = {
.data = 1,
};
- REG_WR (dma, regi_dma9, rw_ack_intr, ack_intr);
+ REG_WR(dma, IN_DMA_INST, rw_ack_intr, ack_intr);
DEBUG(printk("cryptocop DMA done\n"));
@@ -1937,7 +1947,6 @@ dma_done_interrupt(int irq, void *dev_id, struct pt_regs * regs)
static int init_cryptocop(void)
{
unsigned long flags;
- reg_intr_vect_rw_mask intr_mask;
reg_dma_rw_cfg dma_cfg = {.en = 1};
reg_dma_rw_intr_mask intr_mask_in = {.data = regk_dma_yes}; /* Only want descriptor interrupts from the DMA in channel. */
reg_dma_rw_ack_intr ack_intr = {.data = 1,.in_eop = 1 };
@@ -1950,10 +1959,14 @@ static int init_cryptocop(void)
.en = 1
};
- if (request_irq(DMA9_INTR_VECT, dma_done_interrupt, 0, "stream co-processor DMA", NULL)) panic("request_irq stream co-processor irq dma9");
+ if (request_irq(DMA_IRQ, dma_done_interrupt, 0,
+ "stream co-processor DMA", NULL))
+ panic("request_irq stream co-processor irq dma9");
- (void)crisv32_request_dma(8, "strcop", DMA_PANIC_ON_ERROR, 0, dma_strp);
- (void)crisv32_request_dma(9, "strcop", DMA_PANIC_ON_ERROR, 0, dma_strp);
+ (void)crisv32_request_dma(OUT_DMA, "strcop", DMA_PANIC_ON_ERROR,
+ 0, dma_strp);
+ (void)crisv32_request_dma(IN_DMA, "strcop", DMA_PANIC_ON_ERROR,
+ 0, dma_strp);
local_irq_save(flags);
@@ -1963,24 +1976,19 @@ static int init_cryptocop(void)
strcop_cfg.en = 1;
REG_WR(strcop, regi_strcop, rw_cfg, strcop_cfg);
- /* Enable DMA9 interrupt */
- intr_mask = REG_RD(intr_vect, regi_irq, rw_mask);
- intr_mask.dma9 = 1;
- REG_WR(intr_vect, regi_irq, rw_mask, intr_mask);
-
/* Enable DMAs. */
- REG_WR(dma, regi_dma9, rw_cfg, dma_cfg); /* input DMA */
- REG_WR(dma, regi_dma8, rw_cfg, dma_cfg); /* output DMA */
+ REG_WR(dma, IN_DMA_INST, rw_cfg, dma_cfg); /* input DMA */
+ REG_WR(dma, OUT_DMA_INST, rw_cfg, dma_cfg); /* output DMA */
/* Set up wordsize = 4 for DMAs. */
- DMA_WR_CMD (regi_dma8, regk_dma_set_w_size4);
- DMA_WR_CMD (regi_dma9, regk_dma_set_w_size4);
+ DMA_WR_CMD(OUT_DMA_INST, regk_dma_set_w_size4);
+ DMA_WR_CMD(IN_DMA_INST, regk_dma_set_w_size4);
/* Enable interrupts. */
- REG_WR(dma, regi_dma9, rw_intr_mask, intr_mask_in);
+ REG_WR(dma, IN_DMA_INST, rw_intr_mask, intr_mask_in);
/* Clear intr ack. */
- REG_WR(dma, regi_dma9, rw_ack_intr, ack_intr);
+ REG_WR(dma, IN_DMA_INST, rw_ack_intr, ack_intr);
local_irq_restore(flags);
@@ -1991,7 +1999,6 @@ static int init_cryptocop(void)
static void release_cryptocop(void)
{
unsigned long flags;
- reg_intr_vect_rw_mask intr_mask;
reg_dma_rw_cfg dma_cfg = {.en = 0};
reg_dma_rw_intr_mask intr_mask_in = {0};
reg_dma_rw_ack_intr ack_intr = {.data = 1,.in_eop = 1 };
@@ -1999,26 +2006,21 @@ static void release_cryptocop(void)
local_irq_save(flags);
/* Clear intr ack. */
- REG_WR(dma, regi_dma9, rw_ack_intr, ack_intr);
-
- /* Disable DMA9 interrupt */
- intr_mask = REG_RD(intr_vect, regi_irq, rw_mask);
- intr_mask.dma9 = 0;
- REG_WR(intr_vect, regi_irq, rw_mask, intr_mask);
+ REG_WR(dma, IN_DMA_INST, rw_ack_intr, ack_intr);
/* Disable DMAs. */
- REG_WR(dma, regi_dma9, rw_cfg, dma_cfg); /* input DMA */
- REG_WR(dma, regi_dma8, rw_cfg, dma_cfg); /* output DMA */
+ REG_WR(dma, IN_DMA_INST, rw_cfg, dma_cfg); /* input DMA */
+ REG_WR(dma, OUT_DMA_INST, rw_cfg, dma_cfg); /* output DMA */
/* Disable interrupts. */
- REG_WR(dma, regi_dma9, rw_intr_mask, intr_mask_in);
+ REG_WR(dma, IN_DMA_INST, rw_intr_mask, intr_mask_in);
local_irq_restore(flags);
- free_irq(DMA9_INTR_VECT, NULL);
+ free_irq(DMA_IRQ, NULL);
- (void)crisv32_free_dma(8);
- (void)crisv32_free_dma(9);
+ (void)crisv32_free_dma(OUT_DMA);
+ (void)crisv32_free_dma(IN_DMA);
}
@@ -2076,13 +2078,13 @@ static void cryptocop_job_queue_close(void)
reg_dma_rw_cfg dma_out_cfg, dma_in_cfg;
/* Stop DMA. */
- dma_out_cfg = REG_RD(dma, regi_dma8, rw_cfg);
+ dma_out_cfg = REG_RD(dma, OUT_DMA_INST, rw_cfg);
dma_out_cfg.en = regk_dma_no;
- REG_WR(dma, regi_dma8, rw_cfg, dma_out_cfg);
+ REG_WR(dma, OUT_DMA_INST, rw_cfg, dma_out_cfg);
- dma_in_cfg = REG_RD(dma, regi_dma9, rw_cfg);
+ dma_in_cfg = REG_RD(dma, IN_DMA_INST, rw_cfg);
dma_in_cfg.en = regk_dma_no;
- REG_WR(dma, regi_dma9, rw_cfg, dma_in_cfg);
+ REG_WR(dma, IN_DMA_INST, rw_cfg, dma_in_cfg);
/* Disble the cryptocop. */
rw_cfg = REG_RD(strcop, regi_strcop, rw_cfg);
@@ -2226,10 +2228,11 @@ static void cryptocop_start_job(void)
&pj->iop->ctx_out, (char*)virt_to_phys(&pj->iop->ctx_out)));
/* Start input DMA. */
- DMA_START_CONTEXT(regi_dma9, virt_to_phys(&pj->iop->ctx_in));
+ flush_dma_context(&pj->iop->ctx_in);
+ DMA_START_CONTEXT(IN_DMA_INST, virt_to_phys(&pj->iop->ctx_in));
/* Start output DMA. */
- DMA_START_CONTEXT(regi_dma8, virt_to_phys(&pj->iop->ctx_out));
+ DMA_START_CONTEXT(OUT_DMA_INST, virt_to_phys(&pj->iop->ctx_out));
spin_unlock_irqrestore(&running_job_lock, running_job_flags);
DEBUG(printk("cryptocop_start_job: exiting\n"));
@@ -2298,7 +2301,6 @@ static int cryptocop_job_setup(struct cryptocop_prio_job **pj, struct cryptocop_
return 0;
}
-
static int cryptocop_open(struct inode *inode, struct file *filp)
{
int p = iminor(inode);
@@ -3097,7 +3099,8 @@ static int cryptocop_ioctl_create_session(struct inode *inode, struct file *filp
return 0;
}
-static int cryptocop_ioctl(struct inode *inode, struct file *filp, unsigned int cmd, unsigned long arg)
+static long cryptocop_ioctl_unlocked(struct inode *inode,
+ struct file *filp, unsigned int cmd, unsigned long arg)
{
int err = 0;
if (_IOC_TYPE(cmd) != ETRAXCRYPTOCOP_IOCTYPE) {
@@ -3129,6 +3132,18 @@ static int cryptocop_ioctl(struct inode *inode, struct file *filp, unsigned int
return 0;
}
+static long
+cryptocop_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
+{
+ long ret;
+
+ mutex_lock(&cryptocop_mutex);
+ ret = cryptocop_ioctl_unlocked(file_inode(filp), filp, cmd, arg);
+ mutex_unlock(&cryptocop_mutex);
+
+ return ret;
+}
+
#ifdef LDEBUG
static void print_dma_descriptors(struct cryptocop_int_operation *iop)
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2026-01-06 02:45:53 +0000