Merge gregkh@master.kernel.org:/home/rmk/linux-2.6-arm
This commit is contained in:
Greg Kroah-Hartman
Коммит
ac185bdc02
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@ -179,17 +179,19 @@ alloc_safe_buffer(struct dmabounce_device_info *device_info, void *ptr,
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static inline struct safe_buffer *
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find_safe_buffer(struct dmabounce_device_info *device_info, dma_addr_t safe_dma_addr)
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{
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struct safe_buffer *b = NULL;
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struct safe_buffer *b, *rb = NULL;
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unsigned long flags;
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read_lock_irqsave(&device_info->lock, flags);
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list_for_each_entry(b, &device_info->safe_buffers, node)
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if (b->safe_dma_addr == safe_dma_addr)
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if (b->safe_dma_addr == safe_dma_addr) {
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rb = b;
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break;
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}
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read_unlock_irqrestore(&device_info->lock, flags);
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return b;
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return rb;
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}
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static inline void
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@ -634,6 +634,14 @@ ENTRY(__switch_to)
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* purpose.
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*/
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.macro usr_ret, reg
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#ifdef CONFIG_ARM_THUMB
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bx \reg
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#else
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mov pc, \reg
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#endif
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.endm
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.align 5
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.globl __kuser_helper_start
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__kuser_helper_start:
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@ -675,7 +683,7 @@ __kuser_memory_barrier: @ 0xffff0fa0
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#if __LINUX_ARM_ARCH__ >= 6 && defined(CONFIG_SMP)
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mcr p15, 0, r0, c7, c10, 5 @ dmb
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#endif
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mov pc, lr
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usr_ret lr
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.align 5
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@ -778,7 +786,7 @@ __kuser_cmpxchg: @ 0xffff0fc0
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mov r0, #-1
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adds r0, r0, #0
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#endif
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mov pc, lr
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usr_ret lr
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#else
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@ -792,7 +800,7 @@ __kuser_cmpxchg: @ 0xffff0fc0
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#ifdef CONFIG_SMP
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mcr p15, 0, r0, c7, c10, 5 @ dmb
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#endif
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mov pc, lr
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usr_ret lr
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#endif
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@ -834,16 +842,11 @@ __kuser_cmpxchg: @ 0xffff0fc0
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__kuser_get_tls: @ 0xffff0fe0
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#if !defined(CONFIG_HAS_TLS_REG) && !defined(CONFIG_TLS_REG_EMUL)
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ldr r0, [pc, #(16 - 8)] @ TLS stored at 0xffff0ff0
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mov pc, lr
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#else
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mrc p15, 0, r0, c13, c0, 3 @ read TLS register
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mov pc, lr
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#endif
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usr_ret lr
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.rep 5
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.word 0 @ pad up to __kuser_helper_version
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@ -118,7 +118,7 @@ ENTRY(secondary_startup)
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sub r4, r4, r5 @ mmu has been enabled
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ldr r4, [r7, r4] @ get secondary_data.pgdir
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adr lr, __enable_mmu @ return address
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add pc, r10, #12 @ initialise processor
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add pc, r10, #PROCINFO_INITFUNC @ initialise processor
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@ (return control reg)
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/*
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@ -10,45 +10,47 @@ obj-m :=
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obj-n :=
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obj- :=
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# DMA
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obj-$(CONFIG_S3C2410_DMA) += dma.o
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# S3C2400 support files
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obj-$(CONFIG_CPU_S3C2400) += s3c2400-gpio.o
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obj-$(CONFIG_CPU_S3C2400) += s3c2400-gpio.o
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# S3C2410 support files
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obj-$(CONFIG_CPU_S3C2410) += s3c2410.o
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obj-$(CONFIG_CPU_S3C2410) += s3c2410-gpio.o
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obj-$(CONFIG_S3C2410_DMA) += dma.o
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obj-$(CONFIG_CPU_S3C2410) += s3c2410.o
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obj-$(CONFIG_CPU_S3C2410) += s3c2410-gpio.o
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# Power Management support
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obj-$(CONFIG_PM) += pm.o sleep.o
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obj-$(CONFIG_PM_SIMTEC) += pm-simtec.o
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obj-$(CONFIG_PM) += pm.o sleep.o
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obj-$(CONFIG_PM_SIMTEC) += pm-simtec.o
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# S3C2412 support
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obj-$(CONFIG_CPU_S3C2412) += s3c2412.o
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obj-$(CONFIG_CPU_S3C2412) += s3c2412-clock.o
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obj-$(CONFIG_CPU_S3C2412) += s3c2412.o
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obj-$(CONFIG_CPU_S3C2412) += s3c2412-clock.o
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#
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# S3C244X support
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obj-$(CONFIG_CPU_S3C244X) += s3c244x.o
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obj-$(CONFIG_CPU_S3C244X) += s3c244x-irq.o
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obj-$(CONFIG_CPU_S3C244X) += s3c244x.o
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obj-$(CONFIG_CPU_S3C244X) += s3c244x-irq.o
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# Clock control
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obj-$(CONFIG_S3C2410_CLOCK) += s3c2410-clock.o
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obj-$(CONFIG_S3C2410_CLOCK) += s3c2410-clock.o
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# S3C2440 support
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obj-$(CONFIG_CPU_S3C2440) += s3c2440.o s3c2440-dsc.o
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obj-$(CONFIG_CPU_S3C2440) += s3c2440-irq.o
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obj-$(CONFIG_CPU_S3C2440) += s3c2440-clock.o
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obj-$(CONFIG_CPU_S3C2440) += s3c2410-gpio.o
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obj-$(CONFIG_CPU_S3C2440) += s3c2440.o s3c2440-dsc.o
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obj-$(CONFIG_CPU_S3C2440) += s3c2440-irq.o
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obj-$(CONFIG_CPU_S3C2440) += s3c2440-clock.o
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obj-$(CONFIG_CPU_S3C2440) += s3c2410-gpio.o
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# S3C2442 support
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obj-$(CONFIG_CPU_S3C2442) += s3c2442.o
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obj-$(CONFIG_CPU_S3C2442) += s3c2442-clock.o
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obj-$(CONFIG_CPU_S3C2442) += s3c2442.o
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obj-$(CONFIG_CPU_S3C2442) += s3c2442-clock.o
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# bast extras
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@ -112,7 +112,7 @@ dmadbg_capture(s3c2410_dma_chan_t *chan, struct s3c2410_dma_regstate *regs)
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}
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static void
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dmadbg_showregs(const char *fname, int line, s3c2410_dma_chan_t *chan,
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dmadbg_dumpregs(const char *fname, int line, s3c2410_dma_chan_t *chan,
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struct s3c2410_dma_regstate *regs)
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{
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printk(KERN_DEBUG "dma%d: %s:%d: DCSRC=%08lx, DISRC=%08lx, DSTAT=%08lx DMT=%02lx, DCON=%08lx\n",
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@ -132,7 +132,16 @@ dmadbg_showchan(const char *fname, int line, s3c2410_dma_chan_t *chan)
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chan->number, fname, line, chan->load_state,
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chan->curr, chan->next, chan->end);
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dmadbg_showregs(fname, line, chan, &state);
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dmadbg_dumpregs(fname, line, chan, &state);
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}
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static void
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dmadbg_showregs(const char *fname, int line, s3c2410_dma_chan_t *chan)
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{
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struct s3c2410_dma_regstate state;
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dmadbg_capture(chan, &state);
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dmadbg_dumpregs(fname, line, chan, &state);
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}
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#define dbg_showregs(chan) dmadbg_showregs(__FUNCTION__, __LINE__, (chan))
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@ -253,10 +262,14 @@ s3c2410_dma_loadbuffer(s3c2410_dma_chan_t *chan,
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buf->next);
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reload = (buf->next == NULL) ? S3C2410_DCON_NORELOAD : 0;
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} else {
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pr_debug("load_state is %d => autoreload\n", chan->load_state);
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//pr_debug("load_state is %d => autoreload\n", chan->load_state);
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reload = S3C2410_DCON_AUTORELOAD;
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}
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if ((buf->data & 0xf0000000) != 0x30000000) {
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dmawarn("dmaload: buffer is %p\n", (void *)buf->data);
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}
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writel(buf->data, chan->addr_reg);
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dma_wrreg(chan, S3C2410_DMA_DCON,
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@ -370,7 +383,7 @@ static int s3c2410_dma_start(s3c2410_dma_chan_t *chan)
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tmp |= S3C2410_DMASKTRIG_ON;
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dma_wrreg(chan, S3C2410_DMA_DMASKTRIG, tmp);
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pr_debug("wrote %08lx to DMASKTRIG\n", tmp);
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pr_debug("dma%d: %08lx to DMASKTRIG\n", chan->number, tmp);
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#if 0
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/* the dma buffer loads should take care of clearing the AUTO
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@ -384,7 +397,30 @@ static int s3c2410_dma_start(s3c2410_dma_chan_t *chan)
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dbg_showchan(chan);
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/* if we've only loaded one buffer onto the channel, then chec
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* to see if we have another, and if so, try and load it so when
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* the first buffer is finished, the new one will be loaded onto
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* the channel */
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if (chan->next != NULL) {
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if (chan->load_state == S3C2410_DMALOAD_1LOADED) {
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if (s3c2410_dma_waitforload(chan, __LINE__) == 0) {
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pr_debug("%s: buff not yet loaded, no more todo\n",
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__FUNCTION__);
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} else {
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chan->load_state = S3C2410_DMALOAD_1RUNNING;
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s3c2410_dma_loadbuffer(chan, chan->next);
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}
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} else if (chan->load_state == S3C2410_DMALOAD_1RUNNING) {
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s3c2410_dma_loadbuffer(chan, chan->next);
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}
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}
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local_irq_restore(flags);
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return 0;
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}
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@ -436,12 +472,11 @@ int s3c2410_dma_enqueue(unsigned int channel, void *id,
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buf = kmem_cache_alloc(dma_kmem, GFP_ATOMIC);
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if (buf == NULL) {
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pr_debug("%s: out of memory (%ld alloc)\n",
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__FUNCTION__, sizeof(*buf));
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__FUNCTION__, (long)sizeof(*buf));
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return -ENOMEM;
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}
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pr_debug("%s: new buffer %p\n", __FUNCTION__, buf);
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//pr_debug("%s: new buffer %p\n", __FUNCTION__, buf);
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//dbg_showchan(chan);
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buf->next = NULL;
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@ -537,14 +572,20 @@ s3c2410_dma_lastxfer(s3c2410_dma_chan_t *chan)
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case S3C2410_DMALOAD_1LOADED:
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if (s3c2410_dma_waitforload(chan, __LINE__) == 0) {
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/* flag error? */
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printk(KERN_ERR "dma%d: timeout waiting for load\n",
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chan->number);
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printk(KERN_ERR "dma%d: timeout waiting for load (%s)\n",
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chan->number, __FUNCTION__);
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return;
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}
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break;
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case S3C2410_DMALOAD_1LOADED_1RUNNING:
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/* I belive in this case we do not have anything to do
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* until the next buffer comes along, and we turn off the
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* reload */
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return;
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default:
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pr_debug("dma%d: lastxfer: unhandled load_state %d with no next",
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pr_debug("dma%d: lastxfer: unhandled load_state %d with no next\n",
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chan->number, chan->load_state);
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return;
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@ -629,7 +670,14 @@ s3c2410_dma_irq(int irq, void *devpw, struct pt_regs *regs)
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} else {
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}
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if (chan->next != NULL) {
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/* only reload if the channel is still running... our buffer done
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* routine may have altered the state by requesting the dma channel
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* to stop or shutdown... */
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/* todo: check that when the channel is shut-down from inside this
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* function, we cope with unsetting reload, etc */
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if (chan->next != NULL && chan->state != S3C2410_DMA_IDLE) {
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unsigned long flags;
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switch (chan->load_state) {
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@ -644,8 +692,8 @@ s3c2410_dma_irq(int irq, void *devpw, struct pt_regs *regs)
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case S3C2410_DMALOAD_1LOADED:
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if (s3c2410_dma_waitforload(chan, __LINE__) == 0) {
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/* flag error? */
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printk(KERN_ERR "dma%d: timeout waiting for load\n",
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chan->number);
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printk(KERN_ERR "dma%d: timeout waiting for load (%s)\n",
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chan->number, __FUNCTION__);
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return IRQ_HANDLED;
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}
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@ -678,8 +726,6 @@ s3c2410_dma_irq(int irq, void *devpw, struct pt_regs *regs)
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return IRQ_HANDLED;
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}
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/* s3c2410_request_dma
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*
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* get control of an dma channel
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@ -718,11 +764,17 @@ int s3c2410_dma_request(unsigned int channel, s3c2410_dma_client_t *client,
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pr_debug("dma%d: %s : requesting irq %d\n",
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channel, __FUNCTION__, chan->irq);
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chan->irq_claimed = 1;
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local_irq_restore(flags);
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err = request_irq(chan->irq, s3c2410_dma_irq, IRQF_DISABLED,
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client->name, (void *)chan);
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local_irq_save(flags);
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if (err) {
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chan->in_use = 0;
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chan->irq_claimed = 0;
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local_irq_restore(flags);
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printk(KERN_ERR "%s: cannot get IRQ %d for DMA %d\n",
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@ -730,7 +782,6 @@ int s3c2410_dma_request(unsigned int channel, s3c2410_dma_client_t *client,
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return err;
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}
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chan->irq_claimed = 1;
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chan->irq_enabled = 1;
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}
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@ -810,6 +861,7 @@ static int s3c2410_dma_dostop(s3c2410_dma_chan_t *chan)
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tmp = dma_rdreg(chan, S3C2410_DMA_DMASKTRIG);
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tmp |= S3C2410_DMASKTRIG_STOP;
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//tmp &= ~S3C2410_DMASKTRIG_ON;
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dma_wrreg(chan, S3C2410_DMA_DMASKTRIG, tmp);
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#if 0
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@ -819,6 +871,7 @@ static int s3c2410_dma_dostop(s3c2410_dma_chan_t *chan)
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dma_wrreg(chan, S3C2410_DMA_DCON, tmp);
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#endif
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/* should stop do this, or should we wait for flush? */
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chan->state = S3C2410_DMA_IDLE;
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chan->load_state = S3C2410_DMALOAD_NONE;
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@ -827,6 +880,22 @@ static int s3c2410_dma_dostop(s3c2410_dma_chan_t *chan)
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return 0;
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}
|
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|
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void s3c2410_dma_waitforstop(s3c2410_dma_chan_t *chan)
|
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{
|
||||
unsigned long tmp;
|
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unsigned int timeout = 0x10000;
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|
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while (timeout-- > 0) {
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tmp = dma_rdreg(chan, S3C2410_DMA_DMASKTRIG);
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if (!(tmp & S3C2410_DMASKTRIG_ON))
|
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return;
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}
|
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|
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pr_debug("dma%d: failed to stop?\n", chan->number);
|
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}
|
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|
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|
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/* s3c2410_dma_flush
|
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*
|
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* stop the channel, and remove all current and pending transfers
|
||||
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@ -837,7 +906,9 @@ static int s3c2410_dma_flush(s3c2410_dma_chan_t *chan)
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s3c2410_dma_buf_t *buf, *next;
|
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unsigned long flags;
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|
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pr_debug("%s:\n", __FUNCTION__);
|
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pr_debug("%s: chan %p (%d)\n", __FUNCTION__, chan, chan->number);
|
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|
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dbg_showchan(chan);
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|
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local_irq_save(flags);
|
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|
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|
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@ -864,11 +935,64 @@ static int s3c2410_dma_flush(s3c2410_dma_chan_t *chan)
|
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}
|
||||
}
|
||||
|
||||
dbg_showregs(chan);
|
||||
|
||||
s3c2410_dma_waitforstop(chan);
|
||||
|
||||
#if 0
|
||||
/* should also clear interrupts, according to WinCE BSP */
|
||||
{
|
||||
unsigned long tmp;
|
||||
|
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tmp = dma_rdreg(chan, S3C2410_DMA_DCON);
|
||||
tmp |= S3C2410_DCON_NORELOAD;
|
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dma_wrreg(chan, S3C2410_DMA_DCON, tmp);
|
||||
}
|
||||
#endif
|
||||
|
||||
dbg_showregs(chan);
|
||||
|
||||
local_irq_restore(flags);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
int
|
||||
s3c2410_dma_started(s3c2410_dma_chan_t *chan)
|
||||
{
|
||||
unsigned long flags;
|
||||
|
||||
local_irq_save(flags);
|
||||
|
||||
dbg_showchan(chan);
|
||||
|
||||
/* if we've only loaded one buffer onto the channel, then chec
|
||||
* to see if we have another, and if so, try and load it so when
|
||||
* the first buffer is finished, the new one will be loaded onto
|
||||
* the channel */
|
||||
|
||||
if (chan->next != NULL) {
|
||||
if (chan->load_state == S3C2410_DMALOAD_1LOADED) {
|
||||
|
||||
if (s3c2410_dma_waitforload(chan, __LINE__) == 0) {
|
||||
pr_debug("%s: buff not yet loaded, no more todo\n",
|
||||
__FUNCTION__);
|
||||
} else {
|
||||
chan->load_state = S3C2410_DMALOAD_1RUNNING;
|
||||
s3c2410_dma_loadbuffer(chan, chan->next);
|
||||
}
|
||||
|
||||
} else if (chan->load_state == S3C2410_DMALOAD_1RUNNING) {
|
||||
s3c2410_dma_loadbuffer(chan, chan->next);
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
local_irq_restore(flags);
|
||||
|
||||
return 0;
|
||||
|
||||
}
|
||||
|
||||
int
|
||||
s3c2410_dma_ctrl(dmach_t channel, s3c2410_chan_op_t op)
|
||||
|
|
@ -885,14 +1009,15 @@ s3c2410_dma_ctrl(dmach_t channel, s3c2410_chan_op_t op)
|
|||
return s3c2410_dma_dostop(chan);
|
||||
|
||||
case S3C2410_DMAOP_PAUSE:
|
||||
return -ENOENT;
|
||||
|
||||
case S3C2410_DMAOP_RESUME:
|
||||
return -ENOENT;
|
||||
|
||||
case S3C2410_DMAOP_FLUSH:
|
||||
return s3c2410_dma_flush(chan);
|
||||
|
||||
case S3C2410_DMAOP_STARTED:
|
||||
return s3c2410_dma_started(chan);
|
||||
|
||||
case S3C2410_DMAOP_TIMEOUT:
|
||||
return 0;
|
||||
|
||||
|
|
|
|||
|
|
@ -285,7 +285,7 @@ static struct flash_platform_data versatile_flash_data = {
|
|||
|
||||
static struct resource versatile_flash_resource = {
|
||||
.start = VERSATILE_FLASH_BASE,
|
||||
.end = VERSATILE_FLASH_BASE + VERSATILE_FLASH_SIZE,
|
||||
.end = VERSATILE_FLASH_BASE + VERSATILE_FLASH_SIZE - 1,
|
||||
.flags = IORESOURCE_MEM,
|
||||
};
|
||||
|
||||
|
|
|
|||
|
|
@ -104,6 +104,7 @@ enum s3c2410_chan_op_e {
|
|||
S3C2410_DMAOP_RESUME,
|
||||
S3C2410_DMAOP_FLUSH,
|
||||
S3C2410_DMAOP_TIMEOUT, /* internal signal to handler */
|
||||
S3C2410_DMAOP_STARTED, /* indicate channel started */
|
||||
};
|
||||
|
||||
typedef enum s3c2410_chan_op_e s3c2410_chan_op_t;
|
||||
|
|
|
|||
|
|
@ -55,5 +55,6 @@ extern unsigned int elf_hwcap;
|
|||
#define HWCAP_VFP 64
|
||||
#define HWCAP_EDSP 128
|
||||
#define HWCAP_JAVA 256
|
||||
#define HWCAP_IWMMXT 512
|
||||
|
||||
#endif
|
||||
|
|
|
|||
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