switchtec: Add IOCTLs to the Switchtec driver
Add a couple of special IOCTLs to: * Inform userspace of firmware partition locations * Pass event counts and allow userspace to wait on events * Translate PFF numbers used by the switch to port numbers [Dan Carpenter <dan.carpenter@oracle.com>: fix off-by-one in ioctl_event_ctl()] Tested-by: Krishna Dhulipala <krishnad@fb.com> Signed-off-by: Logan Gunthorpe <logang@deltatee.com> Signed-off-by: Stephen Bates <stephen.bates@microsemi.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Reviewed-by: Wei Zhang <wzhang@fb.com> Reviewed-by: Jens Axboe <axboe@fb.com>
This commit is contained in:
Logan Gunthorpe
committed by
Bjorn Helgaas
Bjorn Helgaas
parent
5d8e1881f4
commit
52eabba5bc
@@ -13,6 +13,8 @@
|
||||
*
|
||||
*/
|
||||
|
||||
#include <linux/switchtec_ioctl.h>
|
||||
|
||||
#include <linux/interrupt.h>
|
||||
#include <linux/module.h>
|
||||
#include <linux/fs.h>
|
||||
@@ -778,6 +780,431 @@ static unsigned int switchtec_dev_poll(struct file *filp, poll_table *wait)
|
||||
return ret;
|
||||
}
|
||||
|
||||
static int ioctl_flash_info(struct switchtec_dev *stdev,
|
||||
struct switchtec_ioctl_flash_info __user *uinfo)
|
||||
{
|
||||
struct switchtec_ioctl_flash_info info = {0};
|
||||
struct flash_info_regs __iomem *fi = stdev->mmio_flash_info;
|
||||
|
||||
info.flash_length = ioread32(&fi->flash_length);
|
||||
info.num_partitions = SWITCHTEC_IOCTL_NUM_PARTITIONS;
|
||||
|
||||
if (copy_to_user(uinfo, &info, sizeof(info)))
|
||||
return -EFAULT;
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static void set_fw_info_part(struct switchtec_ioctl_flash_part_info *info,
|
||||
struct partition_info __iomem *pi)
|
||||
{
|
||||
info->address = ioread32(&pi->address);
|
||||
info->length = ioread32(&pi->length);
|
||||
}
|
||||
|
||||
static int ioctl_flash_part_info(struct switchtec_dev *stdev,
|
||||
struct switchtec_ioctl_flash_part_info __user *uinfo)
|
||||
{
|
||||
struct switchtec_ioctl_flash_part_info info = {0};
|
||||
struct flash_info_regs __iomem *fi = stdev->mmio_flash_info;
|
||||
u32 active_addr = -1;
|
||||
|
||||
if (copy_from_user(&info, uinfo, sizeof(info)))
|
||||
return -EFAULT;
|
||||
|
||||
switch (info.flash_partition) {
|
||||
case SWITCHTEC_IOCTL_PART_CFG0:
|
||||
active_addr = ioread32(&fi->active_cfg);
|
||||
set_fw_info_part(&info, &fi->cfg0);
|
||||
break;
|
||||
case SWITCHTEC_IOCTL_PART_CFG1:
|
||||
active_addr = ioread32(&fi->active_cfg);
|
||||
set_fw_info_part(&info, &fi->cfg1);
|
||||
break;
|
||||
case SWITCHTEC_IOCTL_PART_IMG0:
|
||||
active_addr = ioread32(&fi->active_img);
|
||||
set_fw_info_part(&info, &fi->img0);
|
||||
break;
|
||||
case SWITCHTEC_IOCTL_PART_IMG1:
|
||||
active_addr = ioread32(&fi->active_img);
|
||||
set_fw_info_part(&info, &fi->img1);
|
||||
break;
|
||||
case SWITCHTEC_IOCTL_PART_NVLOG:
|
||||
set_fw_info_part(&info, &fi->nvlog);
|
||||
break;
|
||||
case SWITCHTEC_IOCTL_PART_VENDOR0:
|
||||
set_fw_info_part(&info, &fi->vendor[0]);
|
||||
break;
|
||||
case SWITCHTEC_IOCTL_PART_VENDOR1:
|
||||
set_fw_info_part(&info, &fi->vendor[1]);
|
||||
break;
|
||||
case SWITCHTEC_IOCTL_PART_VENDOR2:
|
||||
set_fw_info_part(&info, &fi->vendor[2]);
|
||||
break;
|
||||
case SWITCHTEC_IOCTL_PART_VENDOR3:
|
||||
set_fw_info_part(&info, &fi->vendor[3]);
|
||||
break;
|
||||
case SWITCHTEC_IOCTL_PART_VENDOR4:
|
||||
set_fw_info_part(&info, &fi->vendor[4]);
|
||||
break;
|
||||
case SWITCHTEC_IOCTL_PART_VENDOR5:
|
||||
set_fw_info_part(&info, &fi->vendor[5]);
|
||||
break;
|
||||
case SWITCHTEC_IOCTL_PART_VENDOR6:
|
||||
set_fw_info_part(&info, &fi->vendor[6]);
|
||||
break;
|
||||
case SWITCHTEC_IOCTL_PART_VENDOR7:
|
||||
set_fw_info_part(&info, &fi->vendor[7]);
|
||||
break;
|
||||
default:
|
||||
return -EINVAL;
|
||||
}
|
||||
|
||||
if (info.address == active_addr)
|
||||
info.active = 1;
|
||||
|
||||
if (copy_to_user(uinfo, &info, sizeof(info)))
|
||||
return -EFAULT;
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int ioctl_event_summary(struct switchtec_dev *stdev,
|
||||
struct switchtec_user *stuser,
|
||||
struct switchtec_ioctl_event_summary __user *usum)
|
||||
{
|
||||
struct switchtec_ioctl_event_summary s = {0};
|
||||
int i;
|
||||
u32 reg;
|
||||
|
||||
s.global = ioread32(&stdev->mmio_sw_event->global_summary);
|
||||
s.part_bitmap = ioread32(&stdev->mmio_sw_event->part_event_bitmap);
|
||||
s.local_part = ioread32(&stdev->mmio_part_cfg->part_event_summary);
|
||||
|
||||
for (i = 0; i < stdev->partition_count; i++) {
|
||||
reg = ioread32(&stdev->mmio_part_cfg_all[i].part_event_summary);
|
||||
s.part[i] = reg;
|
||||
}
|
||||
|
||||
for (i = 0; i < SWITCHTEC_MAX_PFF_CSR; i++) {
|
||||
reg = ioread16(&stdev->mmio_pff_csr[i].vendor_id);
|
||||
if (reg != MICROSEMI_VENDOR_ID)
|
||||
break;
|
||||
|
||||
reg = ioread32(&stdev->mmio_pff_csr[i].pff_event_summary);
|
||||
s.pff[i] = reg;
|
||||
}
|
||||
|
||||
if (copy_to_user(usum, &s, sizeof(s)))
|
||||
return -EFAULT;
|
||||
|
||||
stuser->event_cnt = atomic_read(&stdev->event_cnt);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static u32 __iomem *global_ev_reg(struct switchtec_dev *stdev,
|
||||
size_t offset, int index)
|
||||
{
|
||||
return (void __iomem *)stdev->mmio_sw_event + offset;
|
||||
}
|
||||
|
||||
static u32 __iomem *part_ev_reg(struct switchtec_dev *stdev,
|
||||
size_t offset, int index)
|
||||
{
|
||||
return (void __iomem *)&stdev->mmio_part_cfg_all[index] + offset;
|
||||
}
|
||||
|
||||
static u32 __iomem *pff_ev_reg(struct switchtec_dev *stdev,
|
||||
size_t offset, int index)
|
||||
{
|
||||
return (void __iomem *)&stdev->mmio_pff_csr[index] + offset;
|
||||
}
|
||||
|
||||
#define EV_GLB(i, r)[i] = {offsetof(struct sw_event_regs, r), global_ev_reg}
|
||||
#define EV_PAR(i, r)[i] = {offsetof(struct part_cfg_regs, r), part_ev_reg}
|
||||
#define EV_PFF(i, r)[i] = {offsetof(struct pff_csr_regs, r), pff_ev_reg}
|
||||
|
||||
const struct event_reg {
|
||||
size_t offset;
|
||||
u32 __iomem *(*map_reg)(struct switchtec_dev *stdev,
|
||||
size_t offset, int index);
|
||||
} event_regs[] = {
|
||||
EV_GLB(SWITCHTEC_IOCTL_EVENT_STACK_ERROR, stack_error_event_hdr),
|
||||
EV_GLB(SWITCHTEC_IOCTL_EVENT_PPU_ERROR, ppu_error_event_hdr),
|
||||
EV_GLB(SWITCHTEC_IOCTL_EVENT_ISP_ERROR, isp_error_event_hdr),
|
||||
EV_GLB(SWITCHTEC_IOCTL_EVENT_SYS_RESET, sys_reset_event_hdr),
|
||||
EV_GLB(SWITCHTEC_IOCTL_EVENT_FW_EXC, fw_exception_hdr),
|
||||
EV_GLB(SWITCHTEC_IOCTL_EVENT_FW_NMI, fw_nmi_hdr),
|
||||
EV_GLB(SWITCHTEC_IOCTL_EVENT_FW_NON_FATAL, fw_non_fatal_hdr),
|
||||
EV_GLB(SWITCHTEC_IOCTL_EVENT_FW_FATAL, fw_fatal_hdr),
|
||||
EV_GLB(SWITCHTEC_IOCTL_EVENT_TWI_MRPC_COMP, twi_mrpc_comp_hdr),
|
||||
EV_GLB(SWITCHTEC_IOCTL_EVENT_TWI_MRPC_COMP_ASYNC,
|
||||
twi_mrpc_comp_async_hdr),
|
||||
EV_GLB(SWITCHTEC_IOCTL_EVENT_CLI_MRPC_COMP, cli_mrpc_comp_hdr),
|
||||
EV_GLB(SWITCHTEC_IOCTL_EVENT_CLI_MRPC_COMP_ASYNC,
|
||||
cli_mrpc_comp_async_hdr),
|
||||
EV_GLB(SWITCHTEC_IOCTL_EVENT_GPIO_INT, gpio_interrupt_hdr),
|
||||
EV_PAR(SWITCHTEC_IOCTL_EVENT_PART_RESET, part_reset_hdr),
|
||||
EV_PAR(SWITCHTEC_IOCTL_EVENT_MRPC_COMP, mrpc_comp_hdr),
|
||||
EV_PAR(SWITCHTEC_IOCTL_EVENT_MRPC_COMP_ASYNC, mrpc_comp_async_hdr),
|
||||
EV_PAR(SWITCHTEC_IOCTL_EVENT_DYN_PART_BIND_COMP, dyn_binding_hdr),
|
||||
EV_PFF(SWITCHTEC_IOCTL_EVENT_AER_IN_P2P, aer_in_p2p_hdr),
|
||||
EV_PFF(SWITCHTEC_IOCTL_EVENT_AER_IN_VEP, aer_in_vep_hdr),
|
||||
EV_PFF(SWITCHTEC_IOCTL_EVENT_DPC, dpc_hdr),
|
||||
EV_PFF(SWITCHTEC_IOCTL_EVENT_CTS, cts_hdr),
|
||||
EV_PFF(SWITCHTEC_IOCTL_EVENT_HOTPLUG, hotplug_hdr),
|
||||
EV_PFF(SWITCHTEC_IOCTL_EVENT_IER, ier_hdr),
|
||||
EV_PFF(SWITCHTEC_IOCTL_EVENT_THRESH, threshold_hdr),
|
||||
EV_PFF(SWITCHTEC_IOCTL_EVENT_POWER_MGMT, power_mgmt_hdr),
|
||||
EV_PFF(SWITCHTEC_IOCTL_EVENT_TLP_THROTTLING, tlp_throttling_hdr),
|
||||
EV_PFF(SWITCHTEC_IOCTL_EVENT_FORCE_SPEED, force_speed_hdr),
|
||||
EV_PFF(SWITCHTEC_IOCTL_EVENT_CREDIT_TIMEOUT, credit_timeout_hdr),
|
||||
EV_PFF(SWITCHTEC_IOCTL_EVENT_LINK_STATE, link_state_hdr),
|
||||
};
|
||||
|
||||
static u32 __iomem *event_hdr_addr(struct switchtec_dev *stdev,
|
||||
int event_id, int index)
|
||||
{
|
||||
size_t off;
|
||||
|
||||
if (event_id < 0 || event_id >= SWITCHTEC_IOCTL_MAX_EVENTS)
|
||||
return ERR_PTR(-EINVAL);
|
||||
|
||||
off = event_regs[event_id].offset;
|
||||
|
||||
if (event_regs[event_id].map_reg == part_ev_reg) {
|
||||
if (index == SWITCHTEC_IOCTL_EVENT_LOCAL_PART_IDX)
|
||||
index = stdev->partition;
|
||||
else if (index < 0 || index >= stdev->partition_count)
|
||||
return ERR_PTR(-EINVAL);
|
||||
} else if (event_regs[event_id].map_reg == pff_ev_reg) {
|
||||
if (index < 0 || index >= stdev->pff_csr_count)
|
||||
return ERR_PTR(-EINVAL);
|
||||
}
|
||||
|
||||
return event_regs[event_id].map_reg(stdev, off, index);
|
||||
}
|
||||
|
||||
static int event_ctl(struct switchtec_dev *stdev,
|
||||
struct switchtec_ioctl_event_ctl *ctl)
|
||||
{
|
||||
int i;
|
||||
u32 __iomem *reg;
|
||||
u32 hdr;
|
||||
|
||||
reg = event_hdr_addr(stdev, ctl->event_id, ctl->index);
|
||||
if (IS_ERR(reg))
|
||||
return PTR_ERR(reg);
|
||||
|
||||
hdr = ioread32(reg);
|
||||
for (i = 0; i < ARRAY_SIZE(ctl->data); i++)
|
||||
ctl->data[i] = ioread32(®[i + 1]);
|
||||
|
||||
ctl->occurred = hdr & SWITCHTEC_EVENT_OCCURRED;
|
||||
ctl->count = (hdr >> 5) & 0xFF;
|
||||
|
||||
if (!(ctl->flags & SWITCHTEC_IOCTL_EVENT_FLAG_CLEAR))
|
||||
hdr &= ~SWITCHTEC_EVENT_CLEAR;
|
||||
if (ctl->flags & SWITCHTEC_IOCTL_EVENT_FLAG_EN_POLL)
|
||||
hdr |= SWITCHTEC_EVENT_EN_IRQ;
|
||||
if (ctl->flags & SWITCHTEC_IOCTL_EVENT_FLAG_DIS_POLL)
|
||||
hdr &= ~SWITCHTEC_EVENT_EN_IRQ;
|
||||
if (ctl->flags & SWITCHTEC_IOCTL_EVENT_FLAG_EN_LOG)
|
||||
hdr |= SWITCHTEC_EVENT_EN_LOG;
|
||||
if (ctl->flags & SWITCHTEC_IOCTL_EVENT_FLAG_DIS_LOG)
|
||||
hdr &= ~SWITCHTEC_EVENT_EN_LOG;
|
||||
if (ctl->flags & SWITCHTEC_IOCTL_EVENT_FLAG_EN_CLI)
|
||||
hdr |= SWITCHTEC_EVENT_EN_CLI;
|
||||
if (ctl->flags & SWITCHTEC_IOCTL_EVENT_FLAG_DIS_CLI)
|
||||
hdr &= ~SWITCHTEC_EVENT_EN_CLI;
|
||||
if (ctl->flags & SWITCHTEC_IOCTL_EVENT_FLAG_EN_FATAL)
|
||||
hdr |= SWITCHTEC_EVENT_FATAL;
|
||||
if (ctl->flags & SWITCHTEC_IOCTL_EVENT_FLAG_DIS_FATAL)
|
||||
hdr &= ~SWITCHTEC_EVENT_FATAL;
|
||||
|
||||
if (ctl->flags)
|
||||
iowrite32(hdr, reg);
|
||||
|
||||
ctl->flags = 0;
|
||||
if (hdr & SWITCHTEC_EVENT_EN_IRQ)
|
||||
ctl->flags |= SWITCHTEC_IOCTL_EVENT_FLAG_EN_POLL;
|
||||
if (hdr & SWITCHTEC_EVENT_EN_LOG)
|
||||
ctl->flags |= SWITCHTEC_IOCTL_EVENT_FLAG_EN_LOG;
|
||||
if (hdr & SWITCHTEC_EVENT_EN_CLI)
|
||||
ctl->flags |= SWITCHTEC_IOCTL_EVENT_FLAG_EN_CLI;
|
||||
if (hdr & SWITCHTEC_EVENT_FATAL)
|
||||
ctl->flags |= SWITCHTEC_IOCTL_EVENT_FLAG_EN_FATAL;
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int ioctl_event_ctl(struct switchtec_dev *stdev,
|
||||
struct switchtec_ioctl_event_ctl __user *uctl)
|
||||
{
|
||||
int ret;
|
||||
int nr_idxs;
|
||||
struct switchtec_ioctl_event_ctl ctl;
|
||||
|
||||
if (copy_from_user(&ctl, uctl, sizeof(ctl)))
|
||||
return -EFAULT;
|
||||
|
||||
if (ctl.event_id >= SWITCHTEC_IOCTL_MAX_EVENTS)
|
||||
return -EINVAL;
|
||||
|
||||
if (ctl.flags & SWITCHTEC_IOCTL_EVENT_FLAG_UNUSED)
|
||||
return -EINVAL;
|
||||
|
||||
if (ctl.index == SWITCHTEC_IOCTL_EVENT_IDX_ALL) {
|
||||
if (event_regs[ctl.event_id].map_reg == global_ev_reg)
|
||||
nr_idxs = 1;
|
||||
else if (event_regs[ctl.event_id].map_reg == part_ev_reg)
|
||||
nr_idxs = stdev->partition_count;
|
||||
else if (event_regs[ctl.event_id].map_reg == pff_ev_reg)
|
||||
nr_idxs = stdev->pff_csr_count;
|
||||
else
|
||||
return -EINVAL;
|
||||
|
||||
for (ctl.index = 0; ctl.index < nr_idxs; ctl.index++) {
|
||||
ret = event_ctl(stdev, &ctl);
|
||||
if (ret < 0)
|
||||
return ret;
|
||||
}
|
||||
} else {
|
||||
ret = event_ctl(stdev, &ctl);
|
||||
if (ret < 0)
|
||||
return ret;
|
||||
}
|
||||
|
||||
if (copy_to_user(uctl, &ctl, sizeof(ctl)))
|
||||
return -EFAULT;
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int ioctl_pff_to_port(struct switchtec_dev *stdev,
|
||||
struct switchtec_ioctl_pff_port *up)
|
||||
{
|
||||
int i, part;
|
||||
u32 reg;
|
||||
struct part_cfg_regs *pcfg;
|
||||
struct switchtec_ioctl_pff_port p;
|
||||
|
||||
if (copy_from_user(&p, up, sizeof(p)))
|
||||
return -EFAULT;
|
||||
|
||||
p.port = -1;
|
||||
for (part = 0; part < stdev->partition_count; part++) {
|
||||
pcfg = &stdev->mmio_part_cfg_all[part];
|
||||
p.partition = part;
|
||||
|
||||
reg = ioread32(&pcfg->usp_pff_inst_id);
|
||||
if (reg == p.pff) {
|
||||
p.port = 0;
|
||||
break;
|
||||
}
|
||||
|
||||
reg = ioread32(&pcfg->vep_pff_inst_id);
|
||||
if (reg == p.pff) {
|
||||
p.port = SWITCHTEC_IOCTL_PFF_VEP;
|
||||
break;
|
||||
}
|
||||
|
||||
for (i = 0; i < ARRAY_SIZE(pcfg->dsp_pff_inst_id); i++) {
|
||||
reg = ioread32(&pcfg->dsp_pff_inst_id[i]);
|
||||
if (reg != p.pff)
|
||||
continue;
|
||||
|
||||
p.port = i + 1;
|
||||
break;
|
||||
}
|
||||
|
||||
if (p.port != -1)
|
||||
break;
|
||||
}
|
||||
|
||||
if (copy_to_user(up, &p, sizeof(p)))
|
||||
return -EFAULT;
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int ioctl_port_to_pff(struct switchtec_dev *stdev,
|
||||
struct switchtec_ioctl_pff_port *up)
|
||||
{
|
||||
struct switchtec_ioctl_pff_port p;
|
||||
struct part_cfg_regs *pcfg;
|
||||
|
||||
if (copy_from_user(&p, up, sizeof(p)))
|
||||
return -EFAULT;
|
||||
|
||||
if (p.partition == SWITCHTEC_IOCTL_EVENT_LOCAL_PART_IDX)
|
||||
pcfg = stdev->mmio_part_cfg;
|
||||
else if (p.partition < stdev->partition_count)
|
||||
pcfg = &stdev->mmio_part_cfg_all[p.partition];
|
||||
else
|
||||
return -EINVAL;
|
||||
|
||||
switch (p.port) {
|
||||
case 0:
|
||||
p.pff = ioread32(&pcfg->usp_pff_inst_id);
|
||||
break;
|
||||
case SWITCHTEC_IOCTL_PFF_VEP:
|
||||
p.pff = ioread32(&pcfg->vep_pff_inst_id);
|
||||
break;
|
||||
default:
|
||||
if (p.port > ARRAY_SIZE(pcfg->dsp_pff_inst_id))
|
||||
return -EINVAL;
|
||||
p.pff = ioread32(&pcfg->dsp_pff_inst_id[p.port - 1]);
|
||||
break;
|
||||
}
|
||||
|
||||
if (copy_to_user(up, &p, sizeof(p)))
|
||||
return -EFAULT;
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static long switchtec_dev_ioctl(struct file *filp, unsigned int cmd,
|
||||
unsigned long arg)
|
||||
{
|
||||
struct switchtec_user *stuser = filp->private_data;
|
||||
struct switchtec_dev *stdev = stuser->stdev;
|
||||
int rc;
|
||||
void __user *argp = (void __user *)arg;
|
||||
|
||||
rc = lock_mutex_and_test_alive(stdev);
|
||||
if (rc)
|
||||
return rc;
|
||||
|
||||
switch (cmd) {
|
||||
case SWITCHTEC_IOCTL_FLASH_INFO:
|
||||
rc = ioctl_flash_info(stdev, argp);
|
||||
break;
|
||||
case SWITCHTEC_IOCTL_FLASH_PART_INFO:
|
||||
rc = ioctl_flash_part_info(stdev, argp);
|
||||
break;
|
||||
case SWITCHTEC_IOCTL_EVENT_SUMMARY:
|
||||
rc = ioctl_event_summary(stdev, stuser, argp);
|
||||
break;
|
||||
case SWITCHTEC_IOCTL_EVENT_CTL:
|
||||
rc = ioctl_event_ctl(stdev, argp);
|
||||
break;
|
||||
case SWITCHTEC_IOCTL_PFF_TO_PORT:
|
||||
rc = ioctl_pff_to_port(stdev, argp);
|
||||
break;
|
||||
case SWITCHTEC_IOCTL_PORT_TO_PFF:
|
||||
rc = ioctl_port_to_pff(stdev, argp);
|
||||
break;
|
||||
default:
|
||||
rc = -ENOTTY;
|
||||
break;
|
||||
}
|
||||
|
||||
mutex_unlock(&stdev->mrpc_mutex);
|
||||
return rc;
|
||||
}
|
||||
|
||||
static const struct file_operations switchtec_fops = {
|
||||
.owner = THIS_MODULE,
|
||||
.open = switchtec_dev_open,
|
||||
@@ -785,6 +1212,8 @@ static const struct file_operations switchtec_fops = {
|
||||
.write = switchtec_dev_write,
|
||||
.read = switchtec_dev_read,
|
||||
.poll = switchtec_dev_poll,
|
||||
.unlocked_ioctl = switchtec_dev_ioctl,
|
||||
.compat_ioctl = switchtec_dev_ioctl,
|
||||
};
|
||||
|
||||
static void stdev_release(struct device *dev)
|
||||
@@ -871,11 +1300,52 @@ err_put:
|
||||
return ERR_PTR(rc);
|
||||
}
|
||||
|
||||
static int mask_event(struct switchtec_dev *stdev, int eid, int idx)
|
||||
{
|
||||
size_t off = event_regs[eid].offset;
|
||||
u32 __iomem *hdr_reg;
|
||||
u32 hdr;
|
||||
|
||||
hdr_reg = event_regs[eid].map_reg(stdev, off, idx);
|
||||
hdr = ioread32(hdr_reg);
|
||||
|
||||
if (!(hdr & SWITCHTEC_EVENT_OCCURRED && hdr & SWITCHTEC_EVENT_EN_IRQ))
|
||||
return 0;
|
||||
|
||||
dev_dbg(&stdev->dev, "%s: %d %d %x\n", __func__, eid, idx, hdr);
|
||||
hdr &= ~(SWITCHTEC_EVENT_EN_IRQ | SWITCHTEC_EVENT_OCCURRED);
|
||||
iowrite32(hdr, hdr_reg);
|
||||
|
||||
return 1;
|
||||
}
|
||||
|
||||
static int mask_all_events(struct switchtec_dev *stdev, int eid)
|
||||
{
|
||||
int idx;
|
||||
int count = 0;
|
||||
|
||||
if (event_regs[eid].map_reg == part_ev_reg) {
|
||||
for (idx = 0; idx < stdev->partition_count; idx++)
|
||||
count += mask_event(stdev, eid, idx);
|
||||
} else if (event_regs[eid].map_reg == pff_ev_reg) {
|
||||
for (idx = 0; idx < stdev->pff_csr_count; idx++) {
|
||||
if (!stdev->pff_local[idx])
|
||||
continue;
|
||||
count += mask_event(stdev, eid, idx);
|
||||
}
|
||||
} else {
|
||||
count += mask_event(stdev, eid, 0);
|
||||
}
|
||||
|
||||
return count;
|
||||
}
|
||||
|
||||
static irqreturn_t switchtec_event_isr(int irq, void *dev)
|
||||
{
|
||||
struct switchtec_dev *stdev = dev;
|
||||
u32 reg;
|
||||
irqreturn_t ret = IRQ_NONE;
|
||||
int eid, event_count = 0;
|
||||
|
||||
reg = ioread32(&stdev->mmio_part_cfg->mrpc_comp_hdr);
|
||||
if (reg & SWITCHTEC_EVENT_OCCURRED) {
|
||||
@@ -885,6 +1355,17 @@ static irqreturn_t switchtec_event_isr(int irq, void *dev)
|
||||
iowrite32(reg, &stdev->mmio_part_cfg->mrpc_comp_hdr);
|
||||
}
|
||||
|
||||
for (eid = 0; eid < SWITCHTEC_IOCTL_MAX_EVENTS; eid++)
|
||||
event_count += mask_all_events(stdev, eid);
|
||||
|
||||
if (event_count) {
|
||||
atomic_inc(&stdev->event_cnt);
|
||||
wake_up_interruptible(&stdev->event_wq);
|
||||
dev_dbg(&stdev->dev, "%s: %d events\n", __func__,
|
||||
event_count);
|
||||
return IRQ_HANDLED;
|
||||
}
|
||||
|
||||
return ret;
|
||||
}
|
||||
|
||||
|
||||
Reference in New Issue
Block a user