#include <linux/completion.h>
#include <linux/module.h>
#include <linux/platform_device.h>
+#include <linux/slab.h>
#include <mach/dma.h>
#define MSM_DMOV_CHANNEL_COUNT 16
+#define MSM_DMOV_MAX_ADMS 2
#define MODULE_NAME "msm_dmov"
MSM_DMOV_PRINT_FLOW = 4
};
-static DEFINE_SPINLOCK(msm_dmov_lock);
-static struct clk *msm_dmov_clk;
-static struct clk *msm_dmov_pclk;
-static unsigned int channel_active;
-static struct list_head ready_commands[MSM_DMOV_CHANNEL_COUNT];
-static struct list_head active_commands[MSM_DMOV_CHANNEL_COUNT];
unsigned int msm_dmov_print_mask = MSM_DMOV_PRINT_ERRORS;
-static void __iomem *msm_dmov_base;
-static unsigned msm_dmov_irq;
-#define DMOV_SD0(off, ch) (msm_dmov_base + 0x0000 + (off) + ((ch) << 2))
-#define DMOV_SD1(off, ch) (msm_dmov_base + 0x0400 + (off) + ((ch) << 2))
-#define DMOV_SD2(off, ch) (msm_dmov_base + 0x0800 + (off) + ((ch) << 2))
-#define DMOV_SD3(off, ch) (msm_dmov_base + 0x0C00 + (off) + ((ch) << 2))
+struct msm_dmov_conf {
+ void __iomem *base;
+ int channel_active;
+ struct list_head ready_commands[MSM_DMOV_CHANNEL_COUNT];
+ struct list_head active_commands[MSM_DMOV_CHANNEL_COUNT];
+ spinlock_t lock;
+ unsigned irq;
+ struct clk *clk;
+ struct clk *pclk;
+};
+
+static struct msm_dmov_conf dmov_conf[MSM_DMOV_MAX_ADMS];
+static int nr_adms;
+
+#define DMOV_SD0(off, ch) (0x0000 + (off) + ((ch) << 2))
+#define DMOV_SD1(off, ch) (0x0400 + (off) + ((ch) << 2))
+#define DMOV_SD2(off, ch) (0x0800 + (off) + ((ch) << 2))
+#define DMOV_SD3(off, ch) (0x0C00 + (off) + ((ch) << 2))
#if defined(CONFIG_ARCH_MSM7X30)
#define DMOV_SD_AARM DMOV_SD2
#define PRINT_FLOW(format, args...) \
MSM_DMOV_DPRINTF(MSM_DMOV_PRINT_FLOW, format, args);
+static inline unsigned dmov_readl(unsigned addr, int adm)
+{
+ return readl(dmov_conf[adm].base + addr);
+}
+
+static inline void dmov_writel(unsigned val, unsigned addr, int adm)
+{
+ writel(val, dmov_conf[adm].base + addr);
+}
+
+#define DMOV_ID_TO_ADM(id) ((id) / MSM_DMOV_CHANNEL_COUNT)
+#define DMOV_ID_TO_CHAN(id) ((id) % MSM_DMOV_CHANNEL_COUNT)
+#define DMOV_CHAN_ADM_TO_ID(ch, adm) ((ch) + (adm) * MSM_DMOV_CHANNEL_COUNT)
+
void msm_dmov_stop_cmd(unsigned id, struct msm_dmov_cmd *cmd, int graceful)
{
- writel((graceful << 31), DMOV_FLUSH0(id));
+ int adm = DMOV_ID_TO_ADM(id);
+ int ch = DMOV_ID_TO_CHAN(id);
+
+ dmov_writel((graceful << 31), DMOV_FLUSH0(ch), adm);
}
EXPORT_SYMBOL(msm_dmov_stop_cmd);
-static int msm_dmov_clocks_on(void)
+static int msm_dmov_clocks_on(int adm)
{
int ret = 0;
- if (!IS_ERR(msm_dmov_clk)) {
- ret = clk_enable(msm_dmov_clk);
+ if (!IS_ERR(dmov_conf[adm].clk)) {
+ ret = clk_enable(dmov_conf[adm].clk);
if (ret)
return ret;
- if (!IS_ERR(msm_dmov_pclk)) {
- ret = clk_enable(msm_dmov_pclk);
+ if (!IS_ERR(dmov_conf[adm].pclk)) {
+ ret = clk_enable(dmov_conf[adm].pclk);
if (ret)
- clk_disable(msm_dmov_clk);
+ clk_disable(dmov_conf[adm].clk);
}
}
return ret;
}
-static void msm_dmov_clocks_off(void)
+static void msm_dmov_clocks_off(int adm)
{
- if (!IS_ERR(msm_dmov_clk))
- clk_disable(msm_dmov_clk);
- if (!IS_ERR(msm_dmov_pclk))
- clk_disable(msm_dmov_pclk);
+ if (!IS_ERR(dmov_conf[adm].clk))
+ clk_disable(dmov_conf[adm].clk);
+ if (!IS_ERR(dmov_conf[adm].pclk))
+ clk_disable(dmov_conf[adm].pclk);
}
void msm_dmov_enqueue_cmd(unsigned id, struct msm_dmov_cmd *cmd)
{
unsigned long irq_flags;
unsigned int status;
+ int adm = DMOV_ID_TO_ADM(id);
+ int ch = DMOV_ID_TO_CHAN(id);
- spin_lock_irqsave(&msm_dmov_lock, irq_flags);
- if (!channel_active)
- msm_dmov_clocks_on();
+ spin_lock_irqsave(&dmov_conf[adm].lock, irq_flags);
+ if (!dmov_conf[adm].channel_active)
+ msm_dmov_clocks_on(adm);
dsb();
- status = readl(DMOV_STATUS(id));
- if (list_empty(&ready_commands[id]) &&
+ status = dmov_readl(DMOV_STATUS(ch), adm);
+ if (list_empty(&dmov_conf[adm].ready_commands[ch]) &&
(status & DMOV_STATUS_CMD_PTR_RDY)) {
-#if 0
- if (list_empty(&active_commands[id])) {
- PRINT_FLOW("msm_dmov_enqueue_cmd(%d), enable interrupt\n", id);
- writel(DMOV_CONFIG_IRQ_EN, DMOV_CONFIG(id));
- }
-#endif
if (cmd->execute_func)
cmd->execute_func(cmd);
- PRINT_IO("msm_dmov_enqueue_cmd(%d), start command, status %x\n", id, status);
- list_add_tail(&cmd->list, &active_commands[id]);
- if (!channel_active)
- enable_irq(msm_dmov_irq);
- channel_active |= 1U << id;
- writel(cmd->cmdptr, DMOV_CMD_PTR(id));
+ PRINT_IO("msm_dmov_enqueue_cmd(%d), start command, status %x\n",
+ id, status);
+ list_add_tail(&cmd->list, &dmov_conf[adm].active_commands[ch]);
+ if (!dmov_conf[adm].channel_active)
+ enable_irq(dmov_conf[adm].irq);
+ dmov_conf[adm].channel_active |= 1U << ch;
+ dmov_writel(cmd->cmdptr, DMOV_CMD_PTR(ch), adm);
} else {
- if (!channel_active)
- msm_dmov_clocks_off();
- if (list_empty(&active_commands[id]))
- PRINT_ERROR("msm_dmov_enqueue_cmd(%d), error datamover stalled, status %x\n", id, status);
-
- PRINT_IO("msm_dmov_enqueue_cmd(%d), enqueue command, status %x\n", id, status);
- list_add_tail(&cmd->list, &ready_commands[id]);
+ if (!dmov_conf[adm].channel_active)
+ msm_dmov_clocks_off(adm);
+ if (list_empty(&dmov_conf[adm].active_commands[ch]))
+ PRINT_ERROR("msm_dmov_enqueue_cmd(%d), error datamover "
+ "stalled, status %x\n", id, status);
+ PRINT_IO("msm_dmov_enqueue_cmd(%d), enqueue command, status "
+ "%x\n", id, status);
+ list_add_tail(&cmd->list, &dmov_conf[adm].ready_commands[ch]);
}
- spin_unlock_irqrestore(&msm_dmov_lock, irq_flags);
+ spin_unlock_irqrestore(&dmov_conf[adm].lock, irq_flags);
}
EXPORT_SYMBOL(msm_dmov_enqueue_cmd);
void msm_dmov_flush(unsigned int id)
{
unsigned long flags;
- spin_lock_irqsave(&msm_dmov_lock, flags);
+ int ch = DMOV_ID_TO_CHAN(id);
+ int adm = DMOV_ID_TO_ADM(id);
+
+ spin_lock_irqsave(&dmov_conf[adm].lock, flags);
/* XXX not checking if flush cmd sent already */
- if (!list_empty(&active_commands[id])) {
+ if (!list_empty(&dmov_conf[adm].active_commands[ch])) {
PRINT_IO("msm_dmov_flush(%d), send flush cmd\n", id);
- writel(DMOV_FLUSH_GRACEFUL, DMOV_FLUSH0(id));
+ dmov_writel(DMOV_FLUSH_GRACEFUL, DMOV_FLUSH0(ch), adm);
}
- spin_unlock_irqrestore(&msm_dmov_lock, flags);
+ spin_unlock_irqrestore(&dmov_conf[adm].lock, flags);
}
EXPORT_SYMBOL(msm_dmov_flush);
}
EXPORT_SYMBOL(msm_dmov_exec_cmd);
+static void msm_dmov_fill_errdata(struct msm_dmov_errdata *errdata, int ch,
+ int adm)
+{
+ errdata->flush[0] = dmov_readl(DMOV_FLUSH0(ch), adm);
+ errdata->flush[1] = dmov_readl(DMOV_FLUSH1(ch), adm);
+ errdata->flush[2] = dmov_readl(DMOV_FLUSH2(ch), adm);
+ errdata->flush[3] = dmov_readl(DMOV_FLUSH3(ch), adm);
+ errdata->flush[4] = dmov_readl(DMOV_FLUSH4(ch), adm);
+ errdata->flush[5] = dmov_readl(DMOV_FLUSH5(ch), adm);
+}
+
+static int msm_dmov_irq_to_adm(unsigned irq)
+{
+ int i;
+ for (i = 0; i < nr_adms; i++)
+ if (dmov_conf[i].irq == irq)
+ return i;
+ PRINT_ERROR("msm_dmov_irq_to_adm: can't match ADM to IRQ %d\n", irq);
+ return -EINVAL;
+}
+
static irqreturn_t msm_datamover_irq_handler(int irq, void *dev_id)
{
unsigned int int_status, mask, id;
unsigned long irq_flags;
+ unsigned int ch;
unsigned int ch_status;
unsigned int ch_result;
struct msm_dmov_cmd *cmd;
+ int adm = msm_dmov_irq_to_adm(irq);
- spin_lock_irqsave(&msm_dmov_lock, irq_flags);
+ spin_lock_irqsave(&dmov_conf[adm].lock, irq_flags);
- int_status = readl(DMOV_ISR); /* read and clear interrupt */
+ int_status = dmov_readl(DMOV_ISR, adm); /* read and clear interrupt */
PRINT_FLOW("msm_datamover_irq_handler: DMOV_ISR %x\n", int_status);
while (int_status) {
mask = int_status & -int_status;
- id = fls(mask) - 1;
+ ch = fls(mask) - 1;
+ id = DMOV_CHAN_ADM_TO_ID(ch, adm);
PRINT_FLOW("msm_datamover_irq_handler %08x %08x id %d\n", int_status, mask, id);
int_status &= ~mask;
- ch_status = readl(DMOV_STATUS(id));
+ ch_status = dmov_readl(DMOV_STATUS(ch), adm);
if (!(ch_status & DMOV_STATUS_RSLT_VALID)) {
PRINT_FLOW("msm_datamover_irq_handler id %d, result not valid %x\n", id, ch_status);
continue;
}
do {
- ch_result = readl(DMOV_RSLT(id));
- if (list_empty(&active_commands[id])) {
+ ch_result = dmov_readl(DMOV_RSLT(ch), adm);
+ if (list_empty(&dmov_conf[adm].active_commands[ch])) {
PRINT_ERROR("msm_datamover_irq_handler id %d, got result "
"with no active command, status %x, result %x\n",
id, ch_status, ch_result);
cmd = NULL;
} else
- cmd = list_entry(active_commands[id].next, typeof(*cmd), list);
- PRINT_FLOW("msm_datamover_irq_handler id %d, status %x, result %x\n", id, ch_status, ch_result);
+ cmd = list_entry(dmov_conf[adm].
+ active_commands[ch].next, typeof(*cmd),
+ list);
+ PRINT_FLOW("msm_datamover_irq_handler id %d, status %x,"
+ " result %x\n", id, ch_status, ch_result);
if (ch_result & DMOV_RSLT_DONE) {
PRINT_FLOW("msm_datamover_irq_handler id %d, status %x\n",
id, ch_status);
if (ch_result & DMOV_RSLT_FLUSH) {
struct msm_dmov_errdata errdata;
- errdata.flush[0] = readl(DMOV_FLUSH0(id));
- errdata.flush[1] = readl(DMOV_FLUSH1(id));
- errdata.flush[2] = readl(DMOV_FLUSH2(id));
- errdata.flush[3] = readl(DMOV_FLUSH3(id));
- errdata.flush[4] = readl(DMOV_FLUSH4(id));
- errdata.flush[5] = readl(DMOV_FLUSH5(id));
+ msm_dmov_fill_errdata(&errdata, ch, adm);
PRINT_FLOW("msm_datamover_irq_handler id %d, status %x\n", id, ch_status);
PRINT_FLOW("msm_datamover_irq_handler id %d, flush, result %x, flush0 %x\n", id, ch_result, errdata.flush[0]);
if (cmd) {
if (ch_result & DMOV_RSLT_ERROR) {
struct msm_dmov_errdata errdata;
- errdata.flush[0] = readl(DMOV_FLUSH0(id));
- errdata.flush[1] = readl(DMOV_FLUSH1(id));
- errdata.flush[2] = readl(DMOV_FLUSH2(id));
- errdata.flush[3] = readl(DMOV_FLUSH3(id));
- errdata.flush[4] = readl(DMOV_FLUSH4(id));
- errdata.flush[5] = readl(DMOV_FLUSH5(id));
-
+ msm_dmov_fill_errdata(&errdata, ch, adm);
PRINT_ERROR("msm_datamover_irq_handler id %d, status %x\n", id, ch_status);
PRINT_ERROR("msm_datamover_irq_handler id %d, error, result %x, flush0 %x\n", id, ch_result, errdata.flush[0]);
if (cmd) {
}
/* this does not seem to work, once we get an error */
/* the datamover will no longer accept commands */
- writel(0, DMOV_FLUSH0(id));
+ dmov_writel(0, DMOV_FLUSH0(ch), adm);
}
- ch_status = readl(DMOV_STATUS(id));
+ ch_status = dmov_readl(DMOV_STATUS(ch), adm);
PRINT_FLOW("msm_datamover_irq_handler id %d, status %x\n", id, ch_status);
- if ((ch_status & DMOV_STATUS_CMD_PTR_RDY) && !list_empty(&ready_commands[id])) {
- cmd = list_entry(ready_commands[id].next, typeof(*cmd), list);
+ if ((ch_status & DMOV_STATUS_CMD_PTR_RDY) &&
+ !list_empty(&dmov_conf[adm].ready_commands[ch])) {
+ cmd = list_entry(dmov_conf[adm].
+ ready_commands[ch].next, typeof(*cmd),
+ list);
list_del(&cmd->list);
- list_add_tail(&cmd->list, &active_commands[id]);
+ list_add_tail(&cmd->list, &dmov_conf[adm].
+ active_commands[ch]);
if (cmd->execute_func)
cmd->execute_func(cmd);
PRINT_FLOW("msm_datamover_irq_handler id %d, start command\n", id);
- writel(cmd->cmdptr, DMOV_CMD_PTR(id));
+ dmov_writel(cmd->cmdptr, DMOV_CMD_PTR(ch), adm);
}
} while (ch_status & DMOV_STATUS_RSLT_VALID);
- if (list_empty(&active_commands[id]) && list_empty(&ready_commands[id]))
- channel_active &= ~(1U << id);
+ if (list_empty(&dmov_conf[adm].active_commands[ch]) &&
+ list_empty(&dmov_conf[adm].ready_commands[ch]))
+ dmov_conf[adm].channel_active &= ~(1U << ch);
PRINT_FLOW("msm_datamover_irq_handler id %d, status %x\n", id, ch_status);
}
- if (!channel_active) {
- disable_irq_nosync(msm_dmov_irq);
- msm_dmov_clocks_off();
+ if (!dmov_conf[adm].channel_active) {
+ disable_irq_nosync(dmov_conf[adm].irq);
+ msm_dmov_clocks_off(adm);
}
- spin_unlock_irqrestore(&msm_dmov_lock, irq_flags);
+ spin_unlock_irqrestore(&dmov_conf[adm].lock, irq_flags);
return IRQ_HANDLED;
}
-static void __init msm_dmov_deinit_clocks(void)
+static void __init msm_dmov_deinit_clocks(int adm)
{
- if (!IS_ERR(msm_dmov_clk))
- clk_put(msm_dmov_clk);
- if (!IS_ERR(msm_dmov_pclk))
- clk_put(msm_dmov_pclk);
+ if (!IS_ERR(dmov_conf[adm].clk))
+ clk_put(dmov_conf[adm].clk);
+ if (!IS_ERR(dmov_conf[adm].pclk))
+ clk_put(dmov_conf[adm].pclk);
}
+#define PDEV_TO_ADM(pdev) \
+({ \
+ typeof(pdev) _pdev = pdev; \
+ (_pdev->id == -1) ? 0 : _pdev->id; \
+})
+
static int __devinit msm_dmov_init_clocks(struct platform_device *pdev)
{
int ret = 0;
+ int adm = PDEV_TO_ADM(pdev);
- msm_dmov_clk = clk_get(&pdev->dev, "adm_clk");
- if (IS_ERR(msm_dmov_clk)) {
+ dmov_conf[adm].clk = clk_get(&pdev->dev, "adm_clk");
+ if (IS_ERR(dmov_conf[adm].clk)) {
PRINT_ERROR("%s: Error getting adm_clk\n", __func__);
- ret = PTR_ERR(msm_dmov_clk);
+ ret = PTR_ERR(dmov_conf[adm].clk);
}
- msm_dmov_pclk = clk_get(&pdev->dev, "adm_pclk");
+ dmov_conf[adm].pclk = clk_get(&pdev->dev, "adm_pclk");
/* pclk not present on all SoCs, don't return error on failure */
return ret;
}
-static int __devinit msm_dmov_probe(struct platform_device *pdev)
+static int __devinit msm_dmov_conf_init(struct platform_device *pdev)
{
int i;
- int ret;
- struct resource *res;
+ int adm = PDEV_TO_ADM(pdev);
+ struct resource *irqres =
+ platform_get_resource(pdev, IORESOURCE_IRQ, 0);
+ struct resource *memres =
+ platform_get_resource(pdev, IORESOURCE_MEM, 0);
+
+ if (!irqres || !memres || !irqres->start)
+ return -EINVAL;
- res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
- if (!res)
- return -ENXIO;
+ dmov_conf[adm].irq = irqres->start;
- msm_dmov_base = ioremap_nocache(res->start, resource_size(res));
- if (!msm_dmov_base)
+ dmov_conf[adm].base =
+ ioremap_nocache(memres->start, resource_size(memres));
+ if (!dmov_conf[adm].base)
return -ENOMEM;
+ dmov_conf[adm].lock = __SPIN_LOCK_UNLOCKED(dmov_lock);
for (i = 0; i < MSM_DMOV_CHANNEL_COUNT; i++) {
- INIT_LIST_HEAD(&ready_commands[i]);
- INIT_LIST_HEAD(&active_commands[i]);
- writel(DMOV_CONFIG_IRQ_EN | DMOV_CONFIG_FORCE_TOP_PTR_RSLT |
- DMOV_CONFIG_FORCE_FLUSH_RSLT, DMOV_CONFIG(i));
+ INIT_LIST_HEAD(&dmov_conf[adm].ready_commands[i]);
+ INIT_LIST_HEAD(&dmov_conf[adm].active_commands[i]);
}
+ return 0;
+}
- ret = msm_dmov_init_clocks(pdev);
+static inline void __devinit msm_dmov_conf_free(int adm)
+{
+ iounmap(dmov_conf[adm].base);
+}
+
+static int __devinit msm_dmov_probe(struct platform_device *pdev)
+{
+ int i;
+ int ret;
+ int adm = PDEV_TO_ADM(pdev);
+
+ ret = msm_dmov_conf_init(pdev);
if (ret)
- goto out_map;
+ return ret;
- res = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
- if (!res) {
- ret = -EINVAL;
- goto out_clock;
- }
+ for (i = 0; i < MSM_DMOV_CHANNEL_COUNT; i++)
+ dmov_writel(DMOV_CONFIG_IRQ_EN | DMOV_CONFIG_FORCE_TOP_PTR_RSLT
+ | DMOV_CONFIG_FORCE_FLUSH_RSLT, DMOV_CONFIG(i), adm);
- msm_dmov_irq = res->start;
- ret = request_irq(msm_dmov_irq, msm_datamover_irq_handler, 0,
+ ret = msm_dmov_init_clocks(pdev);
+ if (ret)
+ goto out_conf;
+
+ ret = request_irq(dmov_conf[adm].irq, msm_datamover_irq_handler, 0,
"msmdatamover", NULL);
if (ret)
goto out_clock;
- disable_irq(msm_dmov_irq);
+ disable_irq(dmov_conf[adm].irq);
+ nr_adms++;
return 0;
+
out_clock:
- msm_dmov_deinit_clocks();
-out_map:
- iounmap(msm_dmov_base);
+ msm_dmov_deinit_clocks(adm);
+out_conf:
+ msm_dmov_conf_free(adm);
return ret;
}
projects / karo-tx-linux.git / commitdiff