armbian/linux-rockchip
0
0
Fork 0
mirror of https://github.com/armbian/linux-rockchip.git synced 2026-01-06 11:08:10 -08:00
Code Issues Packages Projects Releases Wiki Activity

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

Browse Source 
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
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

File diff suppressed because it is too large Load Diff