in sysdev/fsl_rio.c [437:763]
int fsl_rio_setup(struct platform_device *dev)
{
struct rio_ops *ops;
struct rio_mport *port;
struct rio_priv *priv;
int rc = 0;
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 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 -ENODEV;
}
rc = of_address_to_resource(dev->dev.of_node, 0, ®s);
if (rc) {
dev_err(&dev->dev, "Can't get %pOF property 'reg'\n",
dev->dev.of_node);
return -EFAULT;
}
dev_info(&dev->dev, "Of-device full name %pOF\n",
dev->dev.of_node);
dev_info(&dev->dev, "Regs: %pR\n", ®s);
rio_regs_win = ioremap(regs.start, resource_size(®s));
if (!rio_regs_win) {
dev_err(&dev->dev, "Unable to map rio register window\n");
rc = -ENOMEM;
goto err_rio_regs;
}
ops = kzalloc(sizeof(struct rio_ops), GFP_KERNEL);
if (!ops) {
rc = -ENOMEM;
goto err_ops;
}
ops->lcread = fsl_local_config_read;
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;
ops->map_inb = fsl_map_inb_mem;
ops->unmap_inb = fsl_unmap_inb_mem;
rmu_node = of_parse_phandle(dev->dev.of_node, "fsl,srio-rmu-handle", 0);
if (!rmu_node) {
dev_err(&dev->dev, "No valid fsl,srio-rmu-handle property\n");
rc = -ENOENT;
goto err_rmu;
}
rc = of_address_to_resource(rmu_node, 0, &rmu_regs);
if (rc) {
dev_err(&dev->dev, "Can't get %pOF property 'reg'\n",
rmu_node);
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_rmu;
}
for_each_compatible_node(np, NULL, "fsl,srio-msg-unit") {
rmu_np[tmp] = np;
tmp++;
}
/*set up doobell node*/
np = of_find_compatible_node(NULL, NULL, "fsl,srio-dbell-unit");
if (!np) {
dev_err(&dev->dev, "No fsl,srio-dbell-unit node\n");
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_dbell;
}
dbell->dev = &dev->dev;
dbell->bellirq = irq_of_parse_and_map(np, 1);
dev_info(&dev->dev, "bellirq: %d\n", dbell->bellirq);
aw = of_n_addr_cells(np);
dt_range = of_get_property(np, "reg", &rlen);
if (!dt_range) {
pr_err("%pOF: unable to find 'reg' property\n",
np);
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);
/*set up port write node*/
np = of_find_compatible_node(NULL, NULL, "fsl,srio-port-write-unit");
if (!np) {
dev_err(&dev->dev, "No fsl,srio-port-write-unit node\n");
rc = -ENODEV;
goto err_pw;
}
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("%pOF: unable to find 'reg' property\n",
np);
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);
/*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 %pOF property 'cell-index'\n",
np);
continue;
}
dt_range = of_get_property(np, "ranges", &rlen);
if (!dt_range) {
dev_err(&dev->dev, "Can't get %pOF property 'ranges'\n",
np);
continue;
}
/* 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);
dev_info(&dev->dev, "%pOF: LAW start 0x%016llx, size 0x%016llx.\n",
np, range_start, range_size);
port = kzalloc(sizeof(struct rio_mport), GFP_KERNEL);
if (!port)
continue;
rc = rio_mport_initialize(port);
if (rc) {
kfree(port);
continue;
}
i = *port_index - 1;
port->index = (unsigned char)i;
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->dev.parent = &dev->dev;
port->ops = ops;
port->priv = priv;
port->phys_efptr = 0x100;
port->phys_rmap = 1;
priv->regs_win = rio_regs_win;
ccsr = in_be32(priv->regs_win + RIO_CCSR + i*0x20);
/* 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 (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;
priv->inb_atmu_regs = (struct rio_inb_atmu_regs __iomem *)
(priv->regs_win +
((i == 0) ? RIO_INB_ATMU_REGS_PORT1_OFFSET :
RIO_INB_ATMU_REGS_PORT2_OFFSET));
/* Set to receive packets with any dest ID */
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]);
fsl_rio_inbound_mem_init(priv);
dbell->mport[i] = port;
pw->mport[i] = port;
if (rio_register_mport(port)) {
release_resource(&port->iores);
kfree(priv);
kfree(port);
continue;
}
active_ports++;
}
if (!active_ports) {
rc = -ENOLINK;
goto err;
}
fsl_rio_doorbell_init(dbell);
fsl_rio_port_write_init(pw);
return 0;
err:
kfree(pw);
pw = NULL;
err_pw:
kfree(dbell);
dbell = NULL;
err_dbell:
iounmap(rmu_regs_win);
rmu_regs_win = NULL;
err_rmu:
kfree(ops);
err_ops:
iounmap(rio_regs_win);
rio_regs_win = NULL;
err_rio_regs:
return rc;
}