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fsl-rio: Add two ports and rapidio message units support

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Usually, freescale rapidio endpoint can support one or two 1x or 4X
LP-Serial link interfaces, and rapidio message transactions can be
implemented by two message units. This adds the support of two
rapidio ports and initializes message unit 0 and message unit 1. And
these ports and message units can work simultaneously.

Signed-off-by: Li Yang <leoli@freescale.com>
Signed-off-by: Jin Qing <b24347@freescale.com>
Signed-off-by: Liu Gang <Gang.Liu@freescale.com>
Acked-by: Alexandre Bounine <alexandre.bounine@idt.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
This commit is contained in:
Liu Gang 2011-11-12 20:02:29 +08:00 committed by Kumar Gala
parent 6ec4bedbf1
commit abc3aeae3a
3 changed files with 548 additions and 426 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

399
arch/powerpc/sysdev/fsl_rio.c
View File

@ -45,7 +45,6 @@
#define RIO_PORT1_IECSR 0x10130
#define RIO_PORT2_IECSR 0x101B0
#define RIO_ATMU_REGS_OFFSET 0x10c00
#define RIO_GCCSR 0x13c
#define RIO_ESCSR 0x158
#define ESCSR_CLEAR 0x07120204
@ -74,6 +73,11 @@
: "b" (addr), "i" (-EFAULT), "0" (err))
void __iomem *rio_regs_win;
void __iomem *rmu_regs_win;
resource_size_t rio_law_start;
struct fsl_rio_dbell *dbell;
struct fsl_rio_pw *pw;
#ifdef CONFIG_E500
int fsl_rio_mcheck_exception(struct pt_regs *regs)
@ -120,7 +124,7 @@ static int fsl_local_config_read(struct rio_mport *mport,
{
struct rio_priv *priv = mport->priv;
pr_debug("fsl_local_config_read: index %d offset %8.8x\n", index,
offset);
offset);
*data = in_be32(priv->regs_win + offset);
return 0;
@ -173,7 +177,7 @@ fsl_rio_config_read(struct rio_mport *mport, int index, u16 destid,
pr_debug
("fsl_rio_config_read:"
" index %d destid %d hopcount %d offset %8.8x len %d\n",
index, destid, hopcount, offset, len);
index, destid, hopcount, offset, len);
/* 16MB maintenance window possible */
/* allow only aligned access to maintenance registers */
@ -230,8 +234,8 @@ fsl_rio_config_write(struct rio_mport *mport, int index, u16 destid,
u8 *data;
pr_debug
("fsl_rio_config_write:"
"index %d destid %d hopcount %d offset %8.8x len %d val %8.8x\n",
index, destid, hopcount, offset, len, val);
" index %d destid %d hopcount %d offset %8.8x len %d val %8.8x\n",
index, destid, hopcount, offset, len, val);
/* 16MB maintenance windows possible */
/* allow only aligned access to maintenance registers */
@ -260,7 +264,7 @@ fsl_rio_config_write(struct rio_mport *mport, int index, u16 destid,
return 0;
}
void fsl_rio_port_error_handler(struct rio_mport *port, int offset)
void fsl_rio_port_error_handler(int offset)
{
/*XXX: Error recovery is not implemented, we just clear errors */
out_be32((u32 *)(rio_regs_win + RIO_LTLEDCSR), 0);
@ -331,16 +335,21 @@ int fsl_rio_setup(struct platform_device *dev)
struct rio_mport *port;
struct rio_priv *priv;
int rc = 0;
const u32 *dt_range, *cell;
struct resource regs;
const u32 *dt_range, *cell, *port_index;
u32 active_ports = 0;
struct resource regs, rmu_regs;
struct device_node *np, *rmu_node;
int rlen;
u32 ccsr;
u64 law_start, law_size;
u64 range_start, range_size;
int paw, aw, sw;
u32 i;
static int tmp;
struct device_node *rmu_np[MAX_MSG_UNIT_NUM] = {NULL};
if (!dev->dev.of_node) {
dev_err(&dev->dev, "Device OF-Node is NULL");
return -EFAULT;
return -ENODEV;
}
rc = of_address_to_resource(dev->dev.of_node, 0, &regs);
@ -353,34 +362,13 @@ int fsl_rio_setup(struct platform_device *dev)
dev->dev.of_node->full_name);
dev_info(&dev->dev, "Regs: %pR\n", &regs);
dt_range = of_get_property(dev->dev.of_node, "ranges", &rlen);
if (!dt_range) {
dev_err(&dev->dev, "Can't get %s property 'ranges'\n",
dev->dev.of_node->full_name);
return -EFAULT;
rio_regs_win = ioremap(regs.start, resource_size(&regs));
if (!rio_regs_win) {
dev_err(&dev->dev, "Unable to map rio register window\n");
rc = -ENOMEM;
goto err_rio_regs;
}
/* Get node address wide */
cell = of_get_property(dev->dev.of_node, "#address-cells", NULL);
if (cell)
aw = *cell;
else
aw = of_n_addr_cells(dev->dev.of_node);
/* Get node size wide */
cell = of_get_property(dev->dev.of_node, "#size-cells", NULL);
if (cell)
sw = *cell;
else
sw = of_n_size_cells(dev->dev.of_node);
/* Get parent address wide wide */
paw = of_n_addr_cells(dev->dev.of_node);
law_start = of_read_number(dt_range + aw, paw);
law_size = of_read_number(dt_range + aw + paw, sw);
dev_info(&dev->dev, "LAW start 0x%016llx, size 0x%016llx.\n",
law_start, law_size);
ops = kzalloc(sizeof(struct rio_ops), GFP_KERNEL);
if (!ops) {
rc = -ENOMEM;
@ -390,130 +378,267 @@ int fsl_rio_setup(struct platform_device *dev)
ops->lcwrite = fsl_local_config_write;
ops->cread = fsl_rio_config_read;
ops->cwrite = fsl_rio_config_write;
ops->dsend = fsl_rio_doorbell_send;
ops->pwenable = fsl_rio_pw_enable;
ops->open_outb_mbox = fsl_open_outb_mbox;
ops->open_inb_mbox = fsl_open_inb_mbox;
ops->close_outb_mbox = fsl_close_outb_mbox;
ops->close_inb_mbox = fsl_close_inb_mbox;
ops->add_outb_message = fsl_add_outb_message;
ops->add_inb_buffer = fsl_add_inb_buffer;
ops->get_inb_message = fsl_get_inb_message;
port = kzalloc(sizeof(struct rio_mport), GFP_KERNEL);
if (!port) {
rmu_node = of_parse_phandle(dev->dev.of_node, "fsl,srio-rmu-handle", 0);
if (!rmu_node)
goto err_rmu;
rc = of_address_to_resource(rmu_node, 0, &rmu_regs);
if (rc) {
dev_err(&dev->dev, "Can't get %s property 'reg'\n",
rmu_node->full_name);
goto err_rmu;
}
rmu_regs_win = ioremap(rmu_regs.start, resource_size(&rmu_regs));
if (!rmu_regs_win) {
dev_err(&dev->dev, "Unable to map rmu register window\n");
rc = -ENOMEM;
goto err_port;
goto err_rmu;
}
for_each_compatible_node(np, NULL, "fsl,srio-msg-unit") {
rmu_np[tmp] = np;
tmp++;
}
port->index = 0;
priv = kzalloc(sizeof(struct rio_priv), GFP_KERNEL);
if (!priv) {
printk(KERN_ERR "Can't alloc memory for 'priv'\n");
/*set up doobell node*/
np = of_find_compatible_node(NULL, NULL, "fsl,srio-dbell-unit");
if (!np) {
rc = -ENODEV;
goto err_dbell;
}
dbell = kzalloc(sizeof(struct fsl_rio_dbell), GFP_KERNEL);
if (!(dbell)) {
dev_err(&dev->dev, "Can't alloc memory for 'fsl_rio_dbell'\n");
rc = -ENOMEM;
goto err_priv;
goto err_dbell;
}
dbell->dev = &dev->dev;
dbell->bellirq = irq_of_parse_and_map(np, 1);
dev_info(&dev->dev, "bellirq: %d\n", dbell->bellirq);
INIT_LIST_HEAD(&port->dbells);
port->iores.start = law_start;
port->iores.end = law_start + law_size - 1;
port->iores.flags = IORESOURCE_MEM;
port->iores.name = "rio_io_win";
if (request_resource(&iomem_resource, &port->iores) < 0) {
dev_err(&dev->dev, "RIO: Error requesting master port region"
" 0x%016llx-0x%016llx\n",
(u64)port->iores.start, (u64)port->iores.end);
rc = -ENOMEM;
goto err_res;
aw = of_n_addr_cells(np);
dt_range = of_get_property(np, "reg", &rlen);
if (!dt_range) {
pr_err("%s: unable to find 'reg' property\n",
np->full_name);
rc = -ENOMEM;
goto err_pw;
}
range_start = of_read_number(dt_range, aw);
dbell->dbell_regs = (struct rio_dbell_regs *)(rmu_regs_win +
(u32)range_start);
priv->pwirq = irq_of_parse_and_map(dev->dev.of_node, 0);
dev_info(&dev->dev, "pwirq: %d\n", priv->pwirq);
strcpy(port->name, "RIO0 mport");
priv->dev = &dev->dev;
port->ops = ops;
port->priv = priv;
port->phys_efptr = 0x100;
priv->regs_win = ioremap(regs.start, resource_size(&regs));
rio_regs_win = priv->regs_win;
/* Probe the master port phy type */
ccsr = in_be32(priv->regs_win + RIO_CCSR);
port->phy_type = (ccsr & 1) ? RIO_PHY_SERIAL : RIO_PHY_PARALLEL;
dev_info(&dev->dev, "RapidIO PHY type: %s\n",
(port->phy_type == RIO_PHY_PARALLEL) ? "parallel" :
((port->phy_type == RIO_PHY_SERIAL) ? "serial" :
"unknown"));
/* Checking the port training status */
if (in_be32((priv->regs_win + RIO_ESCSR)) & 1) {
dev_err(&dev->dev, "Port is not ready. "
"Try to restart connection...\n");
switch (port->phy_type) {
case RIO_PHY_SERIAL:
/* Disable ports */
out_be32(priv->regs_win + RIO_CCSR, 0);
/* Set 1x lane */
setbits32(priv->regs_win + RIO_CCSR, 0x02000000);
/* Enable ports */
setbits32(priv->regs_win + RIO_CCSR, 0x00600000);
break;
case RIO_PHY_PARALLEL:
/* Disable ports */
out_be32(priv->regs_win + RIO_CCSR, 0x22000000);
/* Enable ports */
out_be32(priv->regs_win + RIO_CCSR, 0x44000000);
break;
}
msleep(100);
if (in_be32((priv->regs_win + RIO_ESCSR)) & 1) {
dev_err(&dev->dev, "Port restart failed.\n");
rc = -ENOLINK;
goto err;
}
dev_info(&dev->dev, "Port restart success!\n");
/*set up port write node*/
np = of_find_compatible_node(NULL, NULL, "fsl,srio-port-write-unit");
if (!np) {
rc = -ENODEV;
goto err_pw;
}
fsl_rio_info(&dev->dev, ccsr);
port->sys_size = (in_be32((priv->regs_win + RIO_PEF_CAR))
& RIO_PEF_CTLS) >> 4;
dev_info(&dev->dev, "RapidIO Common Transport System size: %d\n",
port->sys_size ? 65536 : 256);
if (rio_register_mport(port))
pw = kzalloc(sizeof(struct fsl_rio_pw), GFP_KERNEL);
if (!(pw)) {
dev_err(&dev->dev, "Can't alloc memory for 'fsl_rio_pw'\n");
rc = -ENOMEM;
goto err_pw;
}
pw->dev = &dev->dev;
pw->pwirq = irq_of_parse_and_map(np, 0);
dev_info(&dev->dev, "pwirq: %d\n", pw->pwirq);
aw = of_n_addr_cells(np);
dt_range = of_get_property(np, "reg", &rlen);
if (!dt_range) {
pr_err("%s: unable to find 'reg' property\n",
np->full_name);
rc = -ENOMEM;
goto err;
}
range_start = of_read_number(dt_range, aw);
pw->pw_regs = (struct rio_pw_regs *)(rmu_regs_win + (u32)range_start);
if (port->host_deviceid >= 0)
out_be32(priv->regs_win + RIO_GCCSR, RIO_PORT_GEN_HOST |
RIO_PORT_GEN_MASTER | RIO_PORT_GEN_DISCOVERED);
else
out_be32(priv->regs_win + RIO_GCCSR, 0x00000000);
/*set up ports node*/
for_each_child_of_node(dev->dev.of_node, np) {
port_index = of_get_property(np, "cell-index", NULL);
if (!port_index) {
dev_err(&dev->dev, "Can't get %s property 'cell-index'\n",
np->full_name);
continue;
}
priv->atmu_regs = (struct rio_atmu_regs *)(priv->regs_win
+ RIO_ATMU_REGS_OFFSET);
priv->maint_atmu_regs = priv->atmu_regs + 1;
dt_range = of_get_property(np, "ranges", &rlen);
if (!dt_range) {
dev_err(&dev->dev, "Can't get %s property 'ranges'\n",
np->full_name);
continue;
}
/* Set to receive any dist ID for serial RapidIO controller. */
if (port->phy_type == RIO_PHY_SERIAL)
out_be32((priv->regs_win + RIO_ISR_AACR), RIO_ISR_AACR_AA);
/* Get node address wide */
cell = of_get_property(np, "#address-cells", NULL);
if (cell)
aw = *cell;
else
aw = of_n_addr_cells(np);
/* Get node size wide */
cell = of_get_property(np, "#size-cells", NULL);
if (cell)
sw = *cell;
else
sw = of_n_size_cells(np);
/* Get parent address wide wide */
paw = of_n_addr_cells(np);
range_start = of_read_number(dt_range + aw, paw);
range_size = of_read_number(dt_range + aw + paw, sw);
/* Configure maintenance transaction window */
out_be32(&priv->maint_atmu_regs->rowbar, law_start >> 12);
out_be32(&priv->maint_atmu_regs->rowar,
0x80077000 | (ilog2(RIO_MAINT_WIN_SIZE) - 1));
dev_info(&dev->dev, "%s: LAW start 0x%016llx, size 0x%016llx.\n",
np->full_name, range_start, range_size);
priv->maint_win = ioremap(law_start, RIO_MAINT_WIN_SIZE);
port = kzalloc(sizeof(struct rio_mport), GFP_KERNEL);
if (!port)
continue;
fsl_rio_setup_rmu(port, dev->dev.of_node);
i = *port_index - 1;
port->index = (unsigned char)i;
fsl_rio_port_write_init(port);
priv = kzalloc(sizeof(struct rio_priv), GFP_KERNEL);
if (!priv) {
dev_err(&dev->dev, "Can't alloc memory for 'priv'\n");
kfree(port);
continue;
}
INIT_LIST_HEAD(&port->dbells);
port->iores.start = range_start;
port->iores.end = port->iores.start + range_size - 1;
port->iores.flags = IORESOURCE_MEM;
port->iores.name = "rio_io_win";
if (request_resource(&iomem_resource, &port->iores) < 0) {
dev_err(&dev->dev, "RIO: Error requesting master port region"
" 0x%016llx-0x%016llx\n",
(u64)port->iores.start, (u64)port->iores.end);
kfree(priv);
kfree(port);
continue;
}
sprintf(port->name, "RIO mport %d", i);
priv->dev = &dev->dev;
port->ops = ops;
port->priv = priv;
port->phys_efptr = 0x100;
priv->regs_win = rio_regs_win;
/* Probe the master port phy type */
ccsr = in_be32(priv->regs_win + RIO_CCSR + i*0x20);
port->phy_type = (ccsr & 1) ? RIO_PHY_SERIAL : RIO_PHY_PARALLEL;
if (port->phy_type == RIO_PHY_PARALLEL) {
dev_err(&dev->dev, "RIO: Parallel PHY type, unsupported port type!\n");
release_resource(&port->iores);
kfree(priv);
kfree(port);
continue;
}
dev_info(&dev->dev, "RapidIO PHY type: Serial\n");
/* Checking the port training status */
if (in_be32((priv->regs_win + RIO_ESCSR + i*0x20)) & 1) {
dev_err(&dev->dev, "Port %d is not ready. "
"Try to restart connection...\n", i);
/* Disable ports */
out_be32(priv->regs_win
+ RIO_CCSR + i*0x20, 0);
/* Set 1x lane */
setbits32(priv->regs_win
+ RIO_CCSR + i*0x20, 0x02000000);
/* Enable ports */
setbits32(priv->regs_win
+ RIO_CCSR + i*0x20, 0x00600000);
msleep(100);
if (in_be32((priv->regs_win
+ RIO_ESCSR + i*0x20)) & 1) {
dev_err(&dev->dev,
"Port %d restart failed.\n", i);
release_resource(&port->iores);
kfree(priv);
kfree(port);
continue;
}
dev_info(&dev->dev, "Port %d restart success!\n", i);
}
fsl_rio_info(&dev->dev, ccsr);
port->sys_size = (in_be32((priv->regs_win + RIO_PEF_CAR))
& RIO_PEF_CTLS) >> 4;
dev_info(&dev->dev, "RapidIO Common Transport System size: %d\n",
port->sys_size ? 65536 : 256);
if (rio_register_mport(port)) {
release_resource(&port->iores);
kfree(priv);
kfree(port);
continue;
}
if (port->host_deviceid >= 0)
out_be32(priv->regs_win + RIO_GCCSR, RIO_PORT_GEN_HOST |
RIO_PORT_GEN_MASTER | RIO_PORT_GEN_DISCOVERED);
else
out_be32(priv->regs_win + RIO_GCCSR,
RIO_PORT_GEN_MASTER);
priv->atmu_regs = (struct rio_atmu_regs *)(priv->regs_win
+ ((i == 0) ? RIO_ATMU_REGS_PORT1_OFFSET :
RIO_ATMU_REGS_PORT2_OFFSET));
priv->maint_atmu_regs = priv->atmu_regs + 1;
/* Set to receive any dist ID for serial RapidIO controller. */
if (port->phy_type == RIO_PHY_SERIAL)
out_be32((priv->regs_win
+ RIO_ISR_AACR + i*0x80), RIO_ISR_AACR_AA);
/* Configure maintenance transaction window */
out_be32(&priv->maint_atmu_regs->rowbar,
port->iores.start >> 12);
out_be32(&priv->maint_atmu_regs->rowar,
0x80077000 | (ilog2(RIO_MAINT_WIN_SIZE) - 1));
priv->maint_win = ioremap(port->iores.start,
RIO_MAINT_WIN_SIZE);
rio_law_start = range_start;
fsl_rio_setup_rmu(port, rmu_np[i]);
dbell->mport[i] = port;
active_ports++;
}
if (!active_ports) {
rc = -ENOLINK;
goto err;
}
fsl_rio_doorbell_init(dbell);
fsl_rio_port_write_init(pw);
return 0;
err:
iounmap(priv->regs_win);
release_resource(&port->iores);
err_res:
kfree(priv);
err_priv:
kfree(port);
err_port:
kfree(pw);
err_pw:
kfree(dbell);
err_dbell:
iounmap(rmu_regs_win);
err_rmu:
kfree(ops);
err_ops:
iounmap(rio_regs_win);
err_rio_regs:
return rc;
}
@ -529,7 +654,7 @@ static int __devinit fsl_of_rio_rpn_probe(struct platform_device *dev)
static const struct of_device_id fsl_of_rio_rpn_ids[] = {
{
.compatible = "fsl,rapidio-delta",
.compatible = "fsl,srio",
},
{},
};

75
arch/powerpc/sysdev/fsl_rio.h
View File

@ -36,13 +36,36 @@
#define RIO_MAINT_WIN_SIZE 0x400000
#define RIO_LTLEDCSR 0x0608
#define DOORBELL_ROWAR_EN 0x80000000
#define DOORBELL_ROWAR_TFLOWLV 0x08000000 /* highest priority level */
#define DOORBELL_ROWAR_PCI 0x02000000 /* PCI window */
#define DOORBELL_ROWAR_NREAD 0x00040000 /* NREAD */
#define DOORBELL_ROWAR_MAINTRD 0x00070000 /* maintenance read */
#define DOORBELL_ROWAR_RES 0x00002000 /* wrtpy: reserverd */
#define DOORBELL_ROWAR_MAINTWD 0x00007000
#define DOORBELL_ROWAR_SIZE 0x0000000b /* window size is 4k */
#define RIO_ATMU_REGS_PORT1_OFFSET 0x10c00
#define RIO_ATMU_REGS_PORT2_OFFSET 0x10e00
#define RIO_S_DBELL_REGS_OFFSET 0x13400
#define RIO_S_PW_REGS_OFFSET 0x134e0
#define RIO_ATMU_REGS_DBELL_OFFSET 0x10C40
#define MAX_MSG_UNIT_NUM 2
#define MAX_PORT_NUM 4
struct rio_atmu_regs {
u32 rowtar;
u32 rowtear;
u32 rowbar;
u32 pad2;
u32 pad1;
u32 rowar;
u32 pad3[3];
u32 pad2[3];
};
struct rio_dbell_ring {
void *virt;
dma_addr_t phys;
};
struct rio_port_write_msg {
@ -53,26 +76,60 @@ struct rio_port_write_msg {
u32 discard_count;
};
struct fsl_rio_dbell {
struct rio_mport *mport[MAX_PORT_NUM];
struct device *dev;
struct rio_dbell_regs __iomem *dbell_regs;
struct rio_dbell_ring dbell_ring;
int bellirq;
};
struct fsl_rio_pw {
struct device *dev;
struct rio_pw_regs __iomem *pw_regs;
struct rio_port_write_msg port_write_msg;
int pwirq;
struct work_struct pw_work;
struct kfifo pw_fifo;
spinlock_t pw_fifo_lock;
};
struct rio_priv {
struct device *dev;
void __iomem *regs_win;
struct rio_atmu_regs __iomem *atmu_regs;
struct rio_atmu_regs __iomem *maint_atmu_regs;
void __iomem *maint_win;
struct rio_port_write_msg port_write_msg;
int pwirq;
struct work_struct pw_work;
struct kfifo pw_fifo;
spinlock_t pw_fifo_lock;
void *rmm_handle; /* RapidIO message manager(unit) Handle */
};
extern void __iomem *rio_regs_win;
extern void __iomem *rmu_regs_win;
extern resource_size_t rio_law_start;
extern struct fsl_rio_dbell *dbell;
extern struct fsl_rio_pw *pw;
extern int fsl_rio_setup_rmu(struct rio_mport *mport,
struct device_node *node);
extern int fsl_rio_port_write_init(struct rio_mport *mport);
extern int fsl_rio_port_write_init(struct fsl_rio_pw *pw);
extern int fsl_rio_pw_enable(struct rio_mport *mport, int enable);
extern void fsl_rio_port_error_handler(struct rio_mport *port, int offset);
extern void fsl_rio_port_error_handler(int offset);
extern int fsl_rio_doorbell_init(struct fsl_rio_dbell *dbell);
extern int fsl_rio_doorbell_send(struct rio_mport *mport,
int index, u16 destid, u16 data);
extern int fsl_add_outb_message(struct rio_mport *mport,
struct rio_dev *rdev,
int mbox, void *buffer, size_t len);
extern int fsl_open_outb_mbox(struct rio_mport *mport,
void *dev_id, int mbox, int entries);
extern void fsl_close_outb_mbox(struct rio_mport *mport, int mbox);
extern int fsl_open_inb_mbox(struct rio_mport *mport,
void *dev_id, int mbox, int entries);
extern void fsl_close_inb_mbox(struct rio_mport *mport, int mbox);
extern int fsl_add_inb_buffer(struct rio_mport *mport, int mbox, void *buf);
extern void *fsl_get_inb_message(struct rio_mport *mport, int mbox);
#endif

500
arch/powerpc/sysdev/fsl_rmu.c
View File

@ -36,8 +36,8 @@
(((struct rio_priv *)(mport->priv))->rmm_handle)
/* RapidIO definition irq, which read from OF-tree */
#define IRQ_RIO_PW(m) (((struct rio_priv *)(m->priv))->pwirq)
#define IRQ_RIO_BELL(m) (((struct fsl_rmu *)(GET_RMM_HANDLE(m)))->bellirq)
#define IRQ_RIO_PW(m) (((struct fsl_rio_pw *)(m))->pwirq)
#define IRQ_RIO_BELL(m) (((struct fsl_rio_dbell *)(m))->bellirq)
#define IRQ_RIO_TX(m) (((struct fsl_rmu *)(GET_RMM_HANDLE(m)))->txirq)
#define IRQ_RIO_RX(m) (((struct fsl_rmu *)(GET_RMM_HANDLE(m)))->rxirq)
@ -73,13 +73,10 @@
#define LTLEECSR_ENABLE_ALL 0xFFC000FC
#define RIO_LTLEECSR 0x060c
#define RIO_IM0SR 0x13064
#define RIO_IM1SR 0x13164
#define RIO_OM0SR 0x13004
#define RIO_OM1SR 0x13104
#define RIO_P_MSG_REGS_OFFSET 0x11000
#define RIO_S_MSG_REGS_OFFSET 0x13000
#define RIO_IM0SR 0x64
#define RIO_IM1SR 0x164
#define RIO_OM0SR 0x4
#define RIO_OM1SR 0x104
#define RIO_DBELL_WIN_SIZE 0x1000
@ -113,75 +110,60 @@
#define DBELL_INF(x) (*(u16 *)(x + DOORBELL_INFO_OFFSET))
struct rio_msg_regs {
u32 omr; /* 0xD_3000 - Outbound message 0 mode register */
u32 osr; /* 0xD_3004 - Outbound message 0 status register */
u32 omr;
u32 osr;
u32 pad1;
u32 odqdpar; /* 0xD_300C - Outbound message 0 descriptor queue
dequeue pointer address register */
u32 odqdpar;
u32 pad2;
u32 osar; /* 0xD_3014 - Outbound message 0 source address
register */
u32 odpr; /* 0xD_3018 - Outbound message 0 destination port
register */
u32 odatr; /* 0xD_301C - Outbound message 0 destination attributes
Register*/
u32 odcr; /* 0xD_3020 - Outbound message 0 double-word count
register */
u32 osar;
u32 odpr;
u32 odatr;
u32 odcr;
u32 pad3;
u32 odqepar; /* 0xD_3028 - Outbound message 0 descriptor queue
enqueue pointer address register */
u32 odqepar;
u32 pad4[13];
u32 imr; /* 0xD_3060 - Inbound message 0 mode register */
u32 isr; /* 0xD_3064 - Inbound message 0 status register */
u32 imr;
u32 isr;
u32 pad5;
u32 ifqdpar; /* 0xD_306C - Inbound message 0 frame queue dequeue
pointer address register*/
u32 ifqdpar;
u32 pad6;
u32 ifqepar; /* 0xD_3074 - Inbound message 0 frame queue enqueue
pointer address register */
u32 pad7[226];
u32 odmr; /* 0xD_3400 - Outbound doorbell mode register */
u32 odsr; /* 0xD_3404 - Outbound doorbell status register */
u32 res0[4];
u32 oddpr; /* 0xD_3418 - Outbound doorbell destination port
register */
u32 oddatr; /* 0xD_341c - Outbound doorbell destination attributes
register */
u32 res1[3];
u32 odretcr; /* 0xD_342C - Outbound doorbell retry error threshold
configuration register */
u32 res2[12];
u32 dmr; /* 0xD_3460 - Inbound doorbell mode register */
u32 dsr; /* 0xD_3464 - Inbound doorbell status register */
u32 pad8;
u32 dqdpar; /* 0xD_346C - Inbound doorbell queue dequeue Pointer
address register */
u32 pad9;
u32 dqepar; /* 0xD_3474 - Inbound doorbell Queue enqueue pointer
address register */
u32 pad10[26];
u32 pwmr; /* 0xD_34E0 - Inbound port-write mode register */
u32 pwsr; /* 0xD_34E4 - Inbound port-write status register */
u32 epwqbar; /* 0xD_34E8 - Extended Port-Write Queue Base Address
register */
u32 pwqbar; /* 0xD_34EC - Inbound port-write queue base address
register */
u32 ifqepar;
};
struct rio_dbell_regs {
u32 odmr;
u32 odsr;
u32 pad1[4];
u32 oddpr;
u32 oddatr;
u32 pad2[3];
u32 odretcr;
u32 pad3[12];
u32 dmr;
u32 dsr;
u32 pad4;
u32 dqdpar;
u32 pad5;
u32 dqepar;
};
struct rio_pw_regs {
u32 pwmr;
u32 pwsr;
u32 epwqbar;
u32 pwqbar;
};
struct rio_tx_desc {
u32 res1;
u32 pad1;
u32 saddr;
u32 dport;
u32 dattr;
u32 res2;
u32 res3;
u32 pad2;
u32 pad3;
u32 dwcnt;
u32 res4;
};
struct rio_dbell_ring {
void *virt;
dma_addr_t phys;
u32 pad4;
};
struct rio_msg_tx_ring {
@ -204,13 +186,9 @@ struct rio_msg_rx_ring {
};
struct fsl_rmu {
struct rio_atmu_regs __iomem *dbell_atmu_regs;
void __iomem *dbell_win;
struct rio_msg_regs __iomem *msg_regs;
struct rio_dbell_ring dbell_ring;
struct rio_msg_tx_ring msg_tx_ring;
struct rio_msg_rx_ring msg_rx_ring;
int bellirq;
int txirq;
int rxirq;
};
@ -247,9 +225,11 @@ fsl_rio_tx_handler(int irq, void *dev_instance)
if (osr & RIO_MSG_OSR_EOMI) {
u32 dqp = in_be32(&rmu->msg_regs->odqdpar);
int slot = (dqp - rmu->msg_tx_ring.phys) >> 5;
port->outb_msg[0].mcback(port, rmu->msg_tx_ring.dev_id, -1,
slot);
if (port->outb_msg[0].mcback != NULL) {
port->outb_msg[0].mcback(port, rmu->msg_tx_ring.dev_id,
-1,
slot);
}
/* Ack the end-of-message interrupt */
out_be32(&rmu->msg_regs->osr, RIO_MSG_OSR_EOMI);
}
@ -284,12 +264,14 @@ fsl_rio_rx_handler(int irq, void *dev_instance)
/* XXX Need to check/dispatch until queue empty */
if (isr & RIO_MSG_ISR_DIQI) {
/*
* We implement *only* mailbox 0, but can receive messages
* for any mailbox/letter to that mailbox destination. So,
* make the callback with an unknown/invalid mailbox number
* argument.
*/
port->inb_msg[0].mcback(port, rmu->msg_rx_ring.dev_id, -1, -1);
* Can receive messages for any mailbox/letter to that
* mailbox destination. So, make the callback with an
* unknown/invalid mailbox number argument.
*/
if (port->inb_msg[0].mcback != NULL)
port->inb_msg[0].mcback(port, rmu->msg_rx_ring.dev_id,
-1,
-1);
/* Ack the queueing interrupt */
out_be32(&rmu->msg_regs->isr, RIO_MSG_ISR_DIQI);
@ -311,27 +293,27 @@ static irqreturn_t
fsl_rio_dbell_handler(int irq, void *dev_instance)
{
int dsr;
struct rio_mport *port = (struct rio_mport *)dev_instance;
struct fsl_rmu *rmu = GET_RMM_HANDLE(port);
struct fsl_rio_dbell *fsl_dbell = (struct fsl_rio_dbell *)dev_instance;
int i;
dsr = in_be32(&rmu->msg_regs->dsr);
dsr = in_be32(&fsl_dbell->dbell_regs->dsr);
if (dsr & DOORBELL_DSR_TE) {
pr_info("RIO: doorbell reception error\n");
out_be32(&rmu->msg_regs->dsr, DOORBELL_DSR_TE);
out_be32(&fsl_dbell->dbell_regs->dsr, DOORBELL_DSR_TE);
goto out;
}
if (dsr & DOORBELL_DSR_QFI) {
pr_info("RIO: doorbell queue full\n");
out_be32(&rmu->msg_regs->dsr, DOORBELL_DSR_QFI);
out_be32(&fsl_dbell->dbell_regs->dsr, DOORBELL_DSR_QFI);
}
/* XXX Need to check/dispatch until queue empty */
if (dsr & DOORBELL_DSR_DIQI) {
u32 dmsg =
(u32) rmu->dbell_ring.virt +
(in_be32(&rmu->msg_regs->dqdpar) & 0xfff);
(u32) fsl_dbell->dbell_ring.virt +
(in_be32(&fsl_dbell->dbell_regs->dqdpar) & 0xfff);
struct rio_dbell *dbell;
int found = 0;
@ -340,48 +322,58 @@ fsl_rio_dbell_handler(int irq, void *dev_instance)
" sid %2.2x tid %2.2x info %4.4x\n",
DBELL_SID(dmsg), DBELL_TID(dmsg), DBELL_INF(dmsg));
list_for_each_entry(dbell, &port->dbells, node) {
if ((dbell->res->start <= DBELL_INF(dmsg)) &&
(dbell->res->end >= DBELL_INF(dmsg))) {
found = 1;
break;
for (i = 0; i < MAX_PORT_NUM; i++) {
if (fsl_dbell->mport[i]) {
list_for_each_entry(dbell,
&fsl_dbell->mport[i]->dbells, node) {
if ((dbell->res->start
<= DBELL_INF(dmsg))
&& (dbell->res->end
>= DBELL_INF(dmsg))) {
found = 1;
break;
}
}
if (found && dbell->dinb) {
dbell->dinb(fsl_dbell->mport[i],
dbell->dev_id, DBELL_SID(dmsg),
DBELL_TID(dmsg),
DBELL_INF(dmsg));
break;
}
}
}
if (found) {
dbell->dinb(port, dbell->dev_id,
DBELL_SID(dmsg),
DBELL_TID(dmsg), DBELL_INF(dmsg));
} else {
if (!found) {
pr_debug
("RIO: spurious doorbell,"
" sid %2.2x tid %2.2x info %4.4x\n",
DBELL_SID(dmsg), DBELL_TID(dmsg),
DBELL_INF(dmsg));
}
setbits32(&rmu->msg_regs->dmr, DOORBELL_DMR_DI);
out_be32(&rmu->msg_regs->dsr, DOORBELL_DSR_DIQI);
setbits32(&fsl_dbell->dbell_regs->dmr, DOORBELL_DMR_DI);
out_be32(&fsl_dbell->dbell_regs->dsr, DOORBELL_DSR_DIQI);
}
out:
return IRQ_HANDLED;
}
void msg_unit_error_handler(struct rio_mport *port)
void msg_unit_error_handler(void)
{
struct fsl_rmu *rmu = GET_RMM_HANDLE(port);
/*XXX: Error recovery is not implemented, we just clear errors */
out_be32((u32 *)(rio_regs_win + RIO_LTLEDCSR), 0);
out_be32((u32 *)(rio_regs_win + RIO_IM0SR), IMSR_CLEAR);
out_be32((u32 *)(rio_regs_win + RIO_IM1SR), IMSR_CLEAR);
out_be32((u32 *)(rio_regs_win + RIO_OM0SR), OMSR_CLEAR);
out_be32((u32 *)(rio_regs_win + RIO_OM1SR), OMSR_CLEAR);
out_be32((u32 *)(rmu_regs_win + RIO_IM0SR), IMSR_CLEAR);
out_be32((u32 *)(rmu_regs_win + RIO_IM1SR), IMSR_CLEAR);
out_be32((u32 *)(rmu_regs_win + RIO_OM0SR), OMSR_CLEAR);
out_be32((u32 *)(rmu_regs_win + RIO_OM1SR), OMSR_CLEAR);
out_be32(&rmu->msg_regs->odsr, ODSR_CLEAR);
out_be32(&rmu->msg_regs->dsr, IDSR_CLEAR);
out_be32(&dbell->dbell_regs->odsr, ODSR_CLEAR);
out_be32(&dbell->dbell_regs->dsr, IDSR_CLEAR);
out_be32(&rmu->msg_regs->pwsr, IPWSR_CLEAR);
out_be32(&pw->pw_regs->pwsr, IPWSR_CLEAR);
}
/**
@ -396,18 +388,15 @@ static irqreturn_t
fsl_rio_port_write_handler(int irq, void *dev_instance)
{
u32 ipwmr, ipwsr;
struct rio_mport *port = (struct rio_mport *)dev_instance;
struct rio_priv *priv = port->priv;
struct fsl_rmu *rmu;
struct fsl_rio_pw *pw = (struct fsl_rio_pw *)dev_instance;
u32 epwisr, tmp;
rmu = GET_RMM_HANDLE(port);
epwisr = in_be32(priv->regs_win + RIO_EPWISR);
epwisr = in_be32(rio_regs_win + RIO_EPWISR);
if (!(epwisr & RIO_EPWISR_PW))
goto pw_done;
ipwmr = in_be32(&rmu->msg_regs->pwmr);
ipwsr = in_be32(&rmu->msg_regs->pwsr);
ipwmr = in_be32(&pw->pw_regs->pwmr);
ipwsr = in_be32(&pw->pw_regs->pwsr);
#ifdef DEBUG_PW
pr_debug("PW Int->IPWMR: 0x%08x IPWSR: 0x%08x (", ipwmr, ipwsr);
@ -428,60 +417,60 @@ fsl_rio_port_write_handler(int irq, void *dev_instance)
/* Save PW message (if there is room in FIFO),
* otherwise discard it.
*/
if (kfifo_avail(&priv->pw_fifo) >= RIO_PW_MSG_SIZE) {
priv->port_write_msg.msg_count++;
kfifo_in(&priv->pw_fifo, priv->port_write_msg.virt,
if (kfifo_avail(&pw->pw_fifo) >= RIO_PW_MSG_SIZE) {
pw->port_write_msg.msg_count++;
kfifo_in(&pw->pw_fifo, pw->port_write_msg.virt,
RIO_PW_MSG_SIZE);
} else {
priv->port_write_msg.discard_count++;
pw->port_write_msg.discard_count++;
pr_debug("RIO: ISR Discarded Port-Write Msg(s) (%d)\n",
priv->port_write_msg.discard_count);
pw->port_write_msg.discard_count);
}
/* Clear interrupt and issue Clear Queue command. This allows
* another port-write to be received.
*/
out_be32(&rmu->msg_regs->pwsr, RIO_IPWSR_QFI);
out_be32(&rmu->msg_regs->pwmr, ipwmr | RIO_IPWMR_CQ);
out_be32(&pw->pw_regs->pwsr, RIO_IPWSR_QFI);
out_be32(&pw->pw_regs->pwmr, ipwmr | RIO_IPWMR_CQ);
schedule_work(&priv->pw_work);
schedule_work(&pw->pw_work);
}
if ((ipwmr & RIO_IPWMR_EIE) && (ipwsr & RIO_IPWSR_TE)) {
priv->port_write_msg.err_count++;
pw->port_write_msg.err_count++;
pr_debug("RIO: Port-Write Transaction Err (%d)\n",
priv->port_write_msg.err_count);
pw->port_write_msg.err_count);
/* Clear Transaction Error: port-write controller should be
* disabled when clearing this error
*/
out_be32(&rmu->msg_regs->pwmr, ipwmr & ~RIO_IPWMR_PWE);
out_be32(&rmu->msg_regs->pwsr, RIO_IPWSR_TE);
out_be32(&rmu->msg_regs->pwmr, ipwmr);
out_be32(&pw->pw_regs->pwmr, ipwmr & ~RIO_IPWMR_PWE);
out_be32(&pw->pw_regs->pwsr, RIO_IPWSR_TE);
out_be32(&pw->pw_regs->pwmr, ipwmr);
}
if (ipwsr & RIO_IPWSR_PWD) {
priv->port_write_msg.discard_count++;
pw->port_write_msg.discard_count++;
pr_debug("RIO: Port Discarded Port-Write Msg(s) (%d)\n",
priv->port_write_msg.discard_count);
out_be32(&rmu->msg_regs->pwsr, RIO_IPWSR_PWD);
pw->port_write_msg.discard_count);
out_be32(&pw->pw_regs->pwsr, RIO_IPWSR_PWD);
}
pw_done:
if (epwisr & RIO_EPWISR_PINT1) {
tmp = in_be32(priv->regs_win + RIO_LTLEDCSR);
tmp = in_be32(rio_regs_win + RIO_LTLEDCSR);
pr_debug("RIO_LTLEDCSR = 0x%x\n", tmp);
fsl_rio_port_error_handler(port, 0);
fsl_rio_port_error_handler(0);
}
if (epwisr & RIO_EPWISR_PINT2) {
tmp = in_be32(priv->regs_win + RIO_LTLEDCSR);
tmp = in_be32(rio_regs_win + RIO_LTLEDCSR);
pr_debug("RIO_LTLEDCSR = 0x%x\n", tmp);
fsl_rio_port_error_handler(port, 1);
fsl_rio_port_error_handler(1);
}
if (epwisr & RIO_EPWISR_MU) {
tmp = in_be32(priv->regs_win + RIO_LTLEDCSR);
tmp = in_be32(rio_regs_win + RIO_LTLEDCSR);
pr_debug("RIO_LTLEDCSR = 0x%x\n", tmp);
msg_unit_error_handler(port);
msg_unit_error_handler();
}
return IRQ_HANDLED;
@ -489,18 +478,15 @@ pw_done:
static void fsl_pw_dpc(struct work_struct *work)
{
struct rio_priv *priv = container_of(work, struct rio_priv, pw_work);
unsigned long flags;
struct fsl_rio_pw *pw = container_of(work, struct fsl_rio_pw, pw_work);
u32 msg_buffer[RIO_PW_MSG_SIZE/sizeof(u32)];
/*
* Process port-write messages
*/
spin_lock_irqsave(&priv->pw_fifo_lock, flags);
while (kfifo_out(&priv->pw_fifo, (unsigned char *)msg_buffer,
RIO_PW_MSG_SIZE)) {
while (kfifo_out_spinlocked(&pw->pw_fifo, (unsigned char *)msg_buffer,
RIO_PW_MSG_SIZE, &pw->pw_fifo_lock)) {
/* Process one message */
spin_unlock_irqrestore(&priv->pw_fifo_lock, flags);
#ifdef DEBUG_PW
{
u32 i;
@ -517,31 +503,26 @@ static void fsl_pw_dpc(struct work_struct *work)
#endif
/* Pass the port-write message to RIO core for processing */
rio_inb_pwrite_handler((union rio_pw_msg *)msg_buffer);
spin_lock_irqsave(&priv->pw_fifo_lock, flags);
}
spin_unlock_irqrestore(&priv->pw_fifo_lock, flags);
}
/**
* fsl_rio_pw_enable - enable/disable port-write interface init
* @mport: Master port implementing the port write unit
* @enable: 1=enable; 0=disable port-write message handling
* @enable: 1=enable; 0=disable port-write message handling
*/
int fsl_rio_pw_enable(struct rio_mport *mport, int enable)
{
struct fsl_rmu *rmu;
u32 rval;
rmu = GET_RMM_HANDLE(mport);
rval = in_be32(&rmu->msg_regs->pwmr);
rval = in_be32(&pw->pw_regs->pwmr);
if (enable)
rval |= RIO_IPWMR_PWE;
else
rval &= ~RIO_IPWMR_PWE;
out_be32(&rmu->msg_regs->pwmr, rval);
out_be32(&pw->pw_regs->pwmr, rval);
return 0;
}
@ -555,51 +536,47 @@ int fsl_rio_pw_enable(struct rio_mport *mport, int enable)
* or %-ENOMEM on failure.
*/
int fsl_rio_port_write_init(struct rio_mport *mport)
int fsl_rio_port_write_init(struct fsl_rio_pw *pw)
{
struct rio_priv *priv = mport->priv;
struct fsl_rmu *rmu;
int rc = 0;
rmu = GET_RMM_HANDLE(mport);
/* Following configurations require a disabled port write controller */
out_be32(&rmu->msg_regs->pwmr,
in_be32(&rmu->msg_regs->pwmr) & ~RIO_IPWMR_PWE);
out_be32(&pw->pw_regs->pwmr,
in_be32(&pw->pw_regs->pwmr) & ~RIO_IPWMR_PWE);
/* Initialize port write */
priv->port_write_msg.virt = dma_alloc_coherent(priv->dev,
pw->port_write_msg.virt = dma_alloc_coherent(pw->dev,
RIO_PW_MSG_SIZE,
&priv->port_write_msg.phys, GFP_KERNEL);
if (!priv->port_write_msg.virt) {
&pw->port_write_msg.phys, GFP_KERNEL);
if (!pw->port_write_msg.virt) {
pr_err("RIO: unable allocate port write queue\n");
return -ENOMEM;
}
priv->port_write_msg.err_count = 0;
priv->port_write_msg.discard_count = 0;
pw->port_write_msg.err_count = 0;
pw->port_write_msg.discard_count = 0;
/* Point dequeue/enqueue pointers at first entry */
out_be32(&rmu->msg_regs->epwqbar, 0);
out_be32(&rmu->msg_regs->pwqbar, (u32) priv->port_write_msg.phys);
out_be32(&pw->pw_regs->epwqbar, 0);
out_be32(&pw->pw_regs->pwqbar, (u32) pw->port_write_msg.phys);
pr_debug("EIPWQBAR: 0x%08x IPWQBAR: 0x%08x\n",
in_be32(&rmu->msg_regs->epwqbar),
in_be32(&rmu->msg_regs->pwqbar));
in_be32(&pw->pw_regs->epwqbar),
in_be32(&pw->pw_regs->pwqbar));
/* Clear interrupt status IPWSR */
out_be32(&rmu->msg_regs->pwsr,
out_be32(&pw->pw_regs->pwsr,
(RIO_IPWSR_TE | RIO_IPWSR_QFI | RIO_IPWSR_PWD));
/* Configure port write contoller for snooping enable all reporting,
clear queue full */
out_be32(&rmu->msg_regs->pwmr,
out_be32(&pw->pw_regs->pwmr,
RIO_IPWMR_SEN | RIO_IPWMR_QFIE | RIO_IPWMR_EIE | RIO_IPWMR_CQ);
/* Hook up port-write handler */
rc = request_irq(IRQ_RIO_PW(mport), fsl_rio_port_write_handler,
IRQF_SHARED, "port-write", (void *)mport);
rc = request_irq(IRQ_RIO_PW(pw), fsl_rio_port_write_handler,
IRQF_SHARED, "port-write", (void *)pw);
if (rc < 0) {
pr_err("MPC85xx RIO: unable to request inbound doorbell irq");
goto err_out;
@ -607,26 +584,26 @@ int fsl_rio_port_write_init(struct rio_mport *mport)
/* Enable Error Interrupt */
out_be32((u32 *)(rio_regs_win + RIO_LTLEECSR), LTLEECSR_ENABLE_ALL);
INIT_WORK(&priv->pw_work, fsl_pw_dpc);
spin_lock_init(&priv->pw_fifo_lock);
if (kfifo_alloc(&priv->pw_fifo, RIO_PW_MSG_SIZE * 32, GFP_KERNEL)) {
INIT_WORK(&pw->pw_work, fsl_pw_dpc);
spin_lock_init(&pw->pw_fifo_lock);
if (kfifo_alloc(&pw->pw_fifo, RIO_PW_MSG_SIZE * 32, GFP_KERNEL)) {
pr_err("FIFO allocation failed\n");
rc = -ENOMEM;
goto err_out_irq;
}
pr_debug("IPWMR: 0x%08x IPWSR: 0x%08x\n",
in_be32(&rmu->msg_regs->pwmr),
in_be32(&rmu->msg_regs->pwsr));
in_be32(&pw->pw_regs->pwmr),
in_be32(&pw->pw_regs->pwsr));
return rc;
err_out_irq:
free_irq(IRQ_RIO_PW(mport), (void *)mport);
free_irq(IRQ_RIO_PW(pw), (void *)pw);
err_out:
dma_free_coherent(priv->dev, RIO_PW_MSG_SIZE,
priv->port_write_msg.virt,
priv->port_write_msg.phys);
dma_free_coherent(pw->dev, RIO_PW_MSG_SIZE,
pw->port_write_msg.virt,
pw->port_write_msg.phys);
return rc;
}
@ -640,29 +617,20 @@ err_out:
* Sends a MPC85xx doorbell message. Returns %0 on success or
* %-EINVAL on failure.
*/
static int fsl_rio_doorbell_send(struct rio_mport *mport,
int fsl_rio_doorbell_send(struct rio_mport *mport,
int index, u16 destid, u16 data)
{
struct fsl_rmu *rmu = GET_RMM_HANDLE(mport);
pr_debug("fsl_doorbell_send: index %d destid %4.4x data %4.4x\n",
index, destid, data);
switch (mport->phy_type) {
case RIO_PHY_PARALLEL:
out_be32(&rmu->dbell_atmu_regs->rowtar, destid << 22);
out_be16(rmu->dbell_win, data);
break;
case RIO_PHY_SERIAL:
/* In the serial version silicons, such as MPC8548, MPC8641,
* below operations is must be.
*/
out_be32(&rmu->msg_regs->odmr, 0x00000000);
out_be32(&rmu->msg_regs->odretcr, 0x00000004);
out_be32(&rmu->msg_regs->oddpr, destid << 16);
out_be32(&rmu->msg_regs->oddatr, data);
out_be32(&rmu->msg_regs->odmr, 0x00000001);
break;
}
/* In the serial version silicons, such as MPC8548, MPC8641,
* below operations is must be.
*/
out_be32(&dbell->dbell_regs->odmr, 0x00000000);
out_be32(&dbell->dbell_regs->odretcr, 0x00000004);
out_be32(&dbell->dbell_regs->oddpr, destid << 16);
out_be32(&dbell->dbell_regs->oddatr, (index << 20) | data);
out_be32(&dbell->dbell_regs->odmr, 0x00000001);
return 0;
}
@ -678,7 +646,7 @@ static int fsl_rio_doorbell_send(struct rio_mport *mport,
* Adds the @buffer message to the MPC85xx outbound message queue. Returns
* %0 on success or %-EINVAL on failure.
*/
static int
int
fsl_add_outb_message(struct rio_mport *mport, struct rio_dev *rdev, int mbox,
void *buffer, size_t len)
{
@ -690,7 +658,6 @@ fsl_add_outb_message(struct rio_mport *mport, struct rio_dev *rdev, int mbox,
pr_debug("RIO: fsl_add_outb_message(): destid %4.4x mbox %d buffer " \
"%8.8x len %8.8x\n", rdev->destid, mbox, (int)buffer, len);
if ((len < 8) || (len > RIO_MAX_MSG_SIZE)) {
ret = -EINVAL;
goto out;
@ -703,22 +670,11 @@ fsl_add_outb_message(struct rio_mport *mport, struct rio_dev *rdev, int mbox,
memset(rmu->msg_tx_ring.virt_buffer[rmu->msg_tx_ring.tx_slot]
+ len, 0, RIO_MAX_MSG_SIZE - len);
switch (mport->phy_type) {
case RIO_PHY_PARALLEL:
/* Set mbox field for message */
desc->dport = mbox & 0x3;
/* Set mbox field for message, and set destid */
desc->dport = (rdev->destid << 16) | (mbox & 0x3);
/* Enable EOMI interrupt, set priority, and set destid */
desc->dattr = 0x28000000 | (rdev->destid << 2);
break;
case RIO_PHY_SERIAL:
/* Set mbox field for message, and set destid */
desc->dport = (rdev->destid << 16) | (mbox & 0x3);
/* Enable EOMI interrupt and priority */
desc->dattr = 0x28000000;
break;
}
/* Enable EOMI interrupt and priority */
desc->dattr = 0x28000000 | ((mport->index) << 20);
/* Set transfer size aligned to next power of 2 (in double words) */
desc->dwcnt = is_power_of_2(len) ? len : 1 << get_bitmask_order(len);
@ -750,7 +706,7 @@ out:
* and enables the outbound message unit. Returns %0 on success and
* %-EINVAL or %-ENOMEM on failure.
*/
static int
int
fsl_open_outb_mbox(struct rio_mport *mport, void *dev_id, int mbox, int entries)
{
int i, j, rc = 0;
@ -855,7 +811,7 @@ out_dma:
* Disables the outbound message unit, free all buffers, and
* frees the outbound message interrupt.
*/
static void fsl_close_outb_mbox(struct rio_mport *mport, int mbox)
void fsl_close_outb_mbox(struct rio_mport *mport, int mbox)
{
struct rio_priv *priv = mport->priv;
struct fsl_rmu *rmu = GET_RMM_HANDLE(mport);
@ -883,7 +839,7 @@ static void fsl_close_outb_mbox(struct rio_mport *mport, int mbox)
* and enables the inbound message unit. Returns %0 on success
* and %-EINVAL or %-ENOMEM on failure.
*/
static int
int
fsl_open_inb_mbox(struct rio_mport *mport, void *dev_id, int mbox, int entries)
{
int i, rc = 0;
@ -956,7 +912,7 @@ out:
* Disables the inbound message unit, free all buffers, and
* frees the inbound message interrupt.
*/
static void fsl_close_inb_mbox(struct rio_mport *mport, int mbox)
void fsl_close_inb_mbox(struct rio_mport *mport, int mbox)
{
struct rio_priv *priv = mport->priv;
struct fsl_rmu *rmu = GET_RMM_HANDLE(mport);
@ -966,7 +922,7 @@ static void fsl_close_inb_mbox(struct rio_mport *mport, int mbox)
/* Free ring */
dma_free_coherent(priv->dev, rmu->msg_rx_ring.size * RIO_MAX_MSG_SIZE,
rmu->msg_rx_ring.virt, rmu->msg_rx_ring.phys);
rmu->msg_rx_ring.virt, rmu->msg_rx_ring.phys);
/* Free interrupt */
free_irq(IRQ_RIO_RX(mport), (void *)mport);
@ -981,7 +937,7 @@ static void fsl_close_inb_mbox(struct rio_mport *mport, int mbox)
* Adds the @buf buffer to the MPC85xx inbound message queue. Returns
* %0 on success or %-EINVAL on failure.
*/
static int fsl_add_inb_buffer(struct rio_mport *mport, int mbox, void *buf)
int fsl_add_inb_buffer(struct rio_mport *mport, int mbox, void *buf)
{
int rc = 0;
struct fsl_rmu *rmu = GET_RMM_HANDLE(mport);
@ -1013,7 +969,7 @@ out:
* Gets the next available inbound message from the inbound message queue.
* A pointer to the message is returned on success or NULL on failure.
*/
static void *fsl_get_inb_message(struct rio_mport *mport, int mbox)
void *fsl_get_inb_message(struct rio_mport *mport, int mbox)
{
struct fsl_rmu *rmu = GET_RMM_HANDLE(mport);
u32 phys_buf, virt_buf;
@ -1058,53 +1014,39 @@ out2:
* ring. Called from fsl_rio_setup(). Returns %0 on success
* or %-ENOMEM on failure.
*/
static int fsl_rio_doorbell_init(struct rio_mport *mport)
int fsl_rio_doorbell_init(struct fsl_rio_dbell *dbell)
{
struct rio_priv *priv = mport->priv;
struct fsl_rmu *rmu = GET_RMM_HANDLE(mport);
int rc = 0;
/* Map outbound doorbell window immediately after maintenance window */
rmu->dbell_win = ioremap(mport->iores.start + RIO_MAINT_WIN_SIZE,
RIO_DBELL_WIN_SIZE);
if (!rmu->dbell_win) {
printk(KERN_ERR
"RIO: unable to map outbound doorbell window\n");
rc = -ENOMEM;
goto out;
}
/* Initialize inbound doorbells */
rmu->dbell_ring.virt = dma_alloc_coherent(priv->dev, 512 *
DOORBELL_MESSAGE_SIZE, &rmu->dbell_ring.phys, GFP_KERNEL);
if (!rmu->dbell_ring.virt) {
dbell->dbell_ring.virt = dma_alloc_coherent(dbell->dev, 512 *
DOORBELL_MESSAGE_SIZE, &dbell->dbell_ring.phys, GFP_KERNEL);
if (!dbell->dbell_ring.virt) {
printk(KERN_ERR "RIO: unable allocate inbound doorbell ring\n");
rc = -ENOMEM;
iounmap(rmu->dbell_win);
goto out;
}
/* Point dequeue/enqueue pointers at first entry in ring */
out_be32(&rmu->msg_regs->dqdpar, (u32) rmu->dbell_ring.phys);
out_be32(&rmu->msg_regs->dqepar, (u32) rmu->dbell_ring.phys);
out_be32(&dbell->dbell_regs->dqdpar, (u32) dbell->dbell_ring.phys);
out_be32(&dbell->dbell_regs->dqepar, (u32) dbell->dbell_ring.phys);
/* Clear interrupt status */
out_be32(&rmu->msg_regs->dsr, 0x00000091);
out_be32(&dbell->dbell_regs->dsr, 0x00000091);
/* Hook up doorbell handler */
rc = request_irq(IRQ_RIO_BELL(mport), fsl_rio_dbell_handler, 0,
"dbell_rx", (void *)mport);
rc = request_irq(IRQ_RIO_BELL(dbell), fsl_rio_dbell_handler, 0,
"dbell_rx", (void *)dbell);
if (rc < 0) {
iounmap(rmu->dbell_win);
dma_free_coherent(priv->dev, 512 * DOORBELL_MESSAGE_SIZE,
rmu->dbell_ring.virt, rmu->dbell_ring.phys);
dma_free_coherent(dbell->dev, 512 * DOORBELL_MESSAGE_SIZE,
dbell->dbell_ring.virt, dbell->dbell_ring.phys);
printk(KERN_ERR
"MPC85xx RIO: unable to request inbound doorbell irq");
goto out;
}
/* Configure doorbells for snooping, 512 entries, and enable */
out_be32(&rmu->msg_regs->dmr, 0x00108161);
out_be32(&dbell->dbell_regs->dmr, 0x00108161);
out:
return rc;
@ -1114,50 +1056,48 @@ int fsl_rio_setup_rmu(struct rio_mport *mport, struct device_node *node)
{
struct rio_priv *priv;
struct fsl_rmu *rmu;
struct rio_ops *ops;
u64 msg_start;
const u32 *msg_addr;
int mlen;
int aw;
if (!mport || !mport->priv || !node)
return -1;
if (!mport || !mport->priv)
return -EINVAL;
priv = mport->priv;
if (!node) {
dev_warn(priv->dev, "Can't get %s property 'fsl,rmu'\n",
priv->dev->of_node->full_name);
return -EINVAL;
}
rmu = kzalloc(sizeof(struct fsl_rmu), GFP_KERNEL);
if (!rmu)
return -ENOMEM;
priv = mport->priv;
aw = of_n_addr_cells(node);
msg_addr = of_get_property(node, "reg", &mlen);
if (!msg_addr) {
pr_err("%s: unable to find 'reg' property of message-unit\n",
node->full_name);
return -ENOMEM;
}
msg_start = of_read_number(msg_addr, aw);
rmu->msg_regs = (struct rio_msg_regs *)
(rmu_regs_win + (u32)msg_start);
rmu->txirq = irq_of_parse_and_map(node, 0);
rmu->rxirq = irq_of_parse_and_map(node, 1);
printk(KERN_INFO "%s: txirq: %d, rxirq %d\n",
node->full_name, rmu->txirq, rmu->rxirq);
priv->rmm_handle = rmu;
rmu->dbell_atmu_regs = priv->atmu_regs + 2;
rmu->msg_regs = (struct rio_msg_regs *)(priv->regs_win +
((mport->phy_type == RIO_PHY_SERIAL) ?
RIO_S_MSG_REGS_OFFSET : RIO_P_MSG_REGS_OFFSET));
rmu->bellirq = irq_of_parse_and_map(node, 2);
rmu->txirq = irq_of_parse_and_map(node, 3);
rmu->rxirq = irq_of_parse_and_map(node, 4);
dev_info(priv->dev, "bellirq: %d, txirq: %d, rxirq %d\n",
rmu->bellirq, rmu->txirq, rmu->rxirq);
ops = mport->ops;
ops->dsend = fsl_rio_doorbell_send;
ops->open_outb_mbox = fsl_open_outb_mbox;
ops->open_inb_mbox = fsl_open_inb_mbox;
ops->close_outb_mbox = fsl_close_outb_mbox;
ops->close_inb_mbox = fsl_close_inb_mbox;
ops->add_outb_message = fsl_add_outb_message;
ops->add_inb_buffer = fsl_add_inb_buffer;
ops->get_inb_message = fsl_get_inb_message;
rio_init_dbell_res(&mport->riores[RIO_DOORBELL_RESOURCE], 0, 0xffff);
rio_init_mbox_res(&mport->riores[RIO_INB_MBOX_RESOURCE], 0, 0);
rio_init_mbox_res(&mport->riores[RIO_OUTB_MBOX_RESOURCE], 0, 0);
/* Configure outbound doorbell window */
out_be32(&rmu->dbell_atmu_regs->rowbar,
(mport->iores.start + RIO_MAINT_WIN_SIZE) >> 12);
/* 4k window size */
out_be32(&rmu->dbell_atmu_regs->rowar, 0x8004200b);
fsl_rio_doorbell_init(mport);
return 0;
}