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Commit 635c45c1 authored by Jesper Nilsson's avatar Jesper Nilsson
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CRIS v32: Rewrite of stream co-processor driver for ETRAX FS and ARTPEC-3 

- Workaround for cachebug (Guinness TR 106).
- Add ARTPEC-3 support.
parent a77dba6a
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arch/cris/arch-v32/drivers/cryptocop.c
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/* $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>
......@@ -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)
......@@ -1886,14 +1897,14 @@ 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 +1948,6 @@ 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 +1960,14 @@ 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 +1977,19 @@ 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 +2000,6 @@ 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 +2007,21 @@ 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 +2079,13 @@ 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 +2229,11 @@ 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"));
......
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