CRIS v32: Rewrite of stream co-processor driver for ETRAX FS and ARTPEC-3
- Workaround for cachebug (Guinness TR 106). - Add ARTPEC-3 support.
This commit is contained in:
Jesper Nilsson
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a77dba6a4d
commit
635c45c195
@ -1,8 +1,7 @@
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/* $Id: cryptocop.c,v 1.13 2005/04/21 17:27:55 henriken Exp $
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*
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/*
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* Stream co-processor driver for the ETRAX FS
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*
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* Copyright (C) 2003-2005 Axis Communications AB
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* Copyright (C) 2003-2007 Axis Communications AB
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*/
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#include <linux/init.h>
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@ -25,17 +24,29 @@
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#include <asm/signal.h>
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#include <asm/irq.h>
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#include <asm/arch/dma.h>
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#include <asm/arch/hwregs/dma.h>
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#include <asm/arch/hwregs/reg_map.h>
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#include <asm/arch/hwregs/reg_rdwr.h>
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#include <asm/arch/hwregs/intr_vect_defs.h>
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#include <asm/arch/hwregs/strcop.h>
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#include <asm/arch/hwregs/strcop_defs.h>
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#include <asm/arch/cryptocop.h>
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#include <dma.h>
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#include <hwregs/dma.h>
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#include <hwregs/reg_map.h>
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#include <hwregs/reg_rdwr.h>
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#include <hwregs/intr_vect_defs.h>
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#include <hwregs/strcop.h>
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#include <hwregs/strcop_defs.h>
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#include <cryptocop.h>
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#ifdef CONFIG_ETRAXFS
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#define IN_DMA 9
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#define OUT_DMA 8
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#define IN_DMA_INST regi_dma9
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#define OUT_DMA_INST regi_dma8
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#define DMA_IRQ DMA9_INTR_VECT
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#else
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#define IN_DMA 3
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#define OUT_DMA 2
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#define IN_DMA_INST regi_dma3
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#define OUT_DMA_INST regi_dma2
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#define DMA_IRQ DMA3_INTR_VECT
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#endif
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#define DESCR_ALLOC_PAD (31)
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@ -1886,14 +1897,14 @@ static void cryptocop_do_tasklet(unsigned long unused)
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}
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static irqreturn_t
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dma_done_interrupt(int irq, void *dev_id, struct pt_regs * regs)
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dma_done_interrupt(int irq, void *dev_id)
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{
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struct cryptocop_prio_job *done_job;
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reg_dma_rw_ack_intr ack_intr = {
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.data = 1,
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};
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REG_WR (dma, regi_dma9, rw_ack_intr, ack_intr);
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REG_WR(dma, IN_DMA_INST, rw_ack_intr, ack_intr);
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DEBUG(printk("cryptocop DMA done\n"));
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@ -1937,7 +1948,6 @@ dma_done_interrupt(int irq, void *dev_id, struct pt_regs * regs)
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static int init_cryptocop(void)
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{
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unsigned long flags;
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reg_intr_vect_rw_mask intr_mask;
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reg_dma_rw_cfg dma_cfg = {.en = 1};
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reg_dma_rw_intr_mask intr_mask_in = {.data = regk_dma_yes}; /* Only want descriptor interrupts from the DMA in channel. */
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reg_dma_rw_ack_intr ack_intr = {.data = 1,.in_eop = 1 };
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@ -1950,10 +1960,14 @@ static int init_cryptocop(void)
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.en = 1
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};
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if (request_irq(DMA9_INTR_VECT, dma_done_interrupt, 0, "stream co-processor DMA", NULL)) panic("request_irq stream co-processor irq dma9");
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if (request_irq(DMA_IRQ, dma_done_interrupt, 0,
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"stream co-processor DMA", NULL))
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panic("request_irq stream co-processor irq dma9");
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(void)crisv32_request_dma(8, "strcop", DMA_PANIC_ON_ERROR, 0, dma_strp);
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(void)crisv32_request_dma(9, "strcop", DMA_PANIC_ON_ERROR, 0, dma_strp);
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(void)crisv32_request_dma(OUT_DMA, "strcop", DMA_PANIC_ON_ERROR,
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0, dma_strp);
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(void)crisv32_request_dma(IN_DMA, "strcop", DMA_PANIC_ON_ERROR,
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0, dma_strp);
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local_irq_save(flags);
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@ -1963,24 +1977,19 @@ static int init_cryptocop(void)
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strcop_cfg.en = 1;
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REG_WR(strcop, regi_strcop, rw_cfg, strcop_cfg);
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/* Enable DMA9 interrupt */
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intr_mask = REG_RD(intr_vect, regi_irq, rw_mask);
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intr_mask.dma9 = 1;
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REG_WR(intr_vect, regi_irq, rw_mask, intr_mask);
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/* Enable DMAs. */
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REG_WR(dma, regi_dma9, rw_cfg, dma_cfg); /* input DMA */
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REG_WR(dma, regi_dma8, rw_cfg, dma_cfg); /* output DMA */
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REG_WR(dma, IN_DMA_INST, rw_cfg, dma_cfg); /* input DMA */
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REG_WR(dma, OUT_DMA_INST, rw_cfg, dma_cfg); /* output DMA */
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/* Set up wordsize = 4 for DMAs. */
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DMA_WR_CMD (regi_dma8, regk_dma_set_w_size4);
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DMA_WR_CMD (regi_dma9, regk_dma_set_w_size4);
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DMA_WR_CMD(OUT_DMA_INST, regk_dma_set_w_size4);
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DMA_WR_CMD(IN_DMA_INST, regk_dma_set_w_size4);
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/* Enable interrupts. */
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REG_WR(dma, regi_dma9, rw_intr_mask, intr_mask_in);
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REG_WR(dma, IN_DMA_INST, rw_intr_mask, intr_mask_in);
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/* Clear intr ack. */
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REG_WR(dma, regi_dma9, rw_ack_intr, ack_intr);
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REG_WR(dma, IN_DMA_INST, rw_ack_intr, ack_intr);
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local_irq_restore(flags);
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@ -1991,7 +2000,6 @@ static int init_cryptocop(void)
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static void release_cryptocop(void)
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{
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unsigned long flags;
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reg_intr_vect_rw_mask intr_mask;
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reg_dma_rw_cfg dma_cfg = {.en = 0};
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reg_dma_rw_intr_mask intr_mask_in = {0};
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reg_dma_rw_ack_intr ack_intr = {.data = 1,.in_eop = 1 };
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@ -1999,26 +2007,21 @@ static void release_cryptocop(void)
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local_irq_save(flags);
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/* Clear intr ack. */
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REG_WR(dma, regi_dma9, rw_ack_intr, ack_intr);
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/* Disable DMA9 interrupt */
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intr_mask = REG_RD(intr_vect, regi_irq, rw_mask);
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intr_mask.dma9 = 0;
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REG_WR(intr_vect, regi_irq, rw_mask, intr_mask);
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REG_WR(dma, IN_DMA_INST, rw_ack_intr, ack_intr);
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/* Disable DMAs. */
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REG_WR(dma, regi_dma9, rw_cfg, dma_cfg); /* input DMA */
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REG_WR(dma, regi_dma8, rw_cfg, dma_cfg); /* output DMA */
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REG_WR(dma, IN_DMA_INST, rw_cfg, dma_cfg); /* input DMA */
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REG_WR(dma, OUT_DMA_INST, rw_cfg, dma_cfg); /* output DMA */
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/* Disable interrupts. */
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REG_WR(dma, regi_dma9, rw_intr_mask, intr_mask_in);
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REG_WR(dma, IN_DMA_INST, rw_intr_mask, intr_mask_in);
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local_irq_restore(flags);
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free_irq(DMA9_INTR_VECT, NULL);
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free_irq(DMA_IRQ, NULL);
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(void)crisv32_free_dma(8);
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(void)crisv32_free_dma(9);
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(void)crisv32_free_dma(OUT_DMA);
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(void)crisv32_free_dma(IN_DMA);
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}
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@ -2076,13 +2079,13 @@ static void cryptocop_job_queue_close(void)
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reg_dma_rw_cfg dma_out_cfg, dma_in_cfg;
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/* Stop DMA. */
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dma_out_cfg = REG_RD(dma, regi_dma8, rw_cfg);
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dma_out_cfg = REG_RD(dma, OUT_DMA_INST, rw_cfg);
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dma_out_cfg.en = regk_dma_no;
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REG_WR(dma, regi_dma8, rw_cfg, dma_out_cfg);
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REG_WR(dma, OUT_DMA_INST, rw_cfg, dma_out_cfg);
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dma_in_cfg = REG_RD(dma, regi_dma9, rw_cfg);
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dma_in_cfg = REG_RD(dma, IN_DMA_INST, rw_cfg);
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dma_in_cfg.en = regk_dma_no;
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REG_WR(dma, regi_dma9, rw_cfg, dma_in_cfg);
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REG_WR(dma, IN_DMA_INST, rw_cfg, dma_in_cfg);
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/* Disble the cryptocop. */
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rw_cfg = REG_RD(strcop, regi_strcop, rw_cfg);
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@ -2226,10 +2229,11 @@ static void cryptocop_start_job(void)
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&pj->iop->ctx_out, (char*)virt_to_phys(&pj->iop->ctx_out)));
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/* Start input DMA. */
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DMA_START_CONTEXT(regi_dma9, virt_to_phys(&pj->iop->ctx_in));
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flush_dma_context(&pj->iop->ctx_in);
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DMA_START_CONTEXT(IN_DMA_INST, virt_to_phys(&pj->iop->ctx_in));
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/* Start output DMA. */
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DMA_START_CONTEXT(regi_dma8, virt_to_phys(&pj->iop->ctx_out));
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DMA_START_CONTEXT(OUT_DMA_INST, virt_to_phys(&pj->iop->ctx_out));
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spin_unlock_irqrestore(&running_job_lock, running_job_flags);
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DEBUG(printk("cryptocop_start_job: exiting\n"));
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