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path: root/usr/src/uts/sun4v/io/vldc.c
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Diffstat (limited to 'usr/src/uts/sun4v/io/vldc.c')
-rw-r--r--usr/src/uts/sun4v/io/vldc.c156
1 files changed, 90 insertions, 66 deletions
diff --git a/usr/src/uts/sun4v/io/vldc.c b/usr/src/uts/sun4v/io/vldc.c
index 6c366c5c59..6b9d48a76c 100644
--- a/usr/src/uts/sun4v/io/vldc.c
+++ b/usr/src/uts/sun4v/io/vldc.c
@@ -408,6 +408,7 @@ i_vldc_mdeg_register(vldc_t *vldcp)
bcopy(nameprop, name, namesz);
VLDC_SET_MDEG_PROP_NAME(pspecp, name);
+ ddi_prop_free(nameprop);
/* copy in the instance property */
VLDC_SET_MDEG_PROP_INST(pspecp, inst);
@@ -728,6 +729,9 @@ i_vldc_close_port(vldc_t *vldcp, uint_t portno)
kmem_free(vport->send_buf, vport->mtu);
kmem_free(vport->recv_buf, vport->mtu);
+ if (strcmp(vport->minorp->sname, VLDC_HVCTL_SVCNAME) == 0)
+ kmem_free(vport->cookie_buf, vldc_max_cookie);
+
vport->status = VLDC_PORT_CLOSED;
return (rv);
@@ -910,6 +914,9 @@ vldc_open(dev_t *devp, int flag, int otyp, cred_t *cred)
vport->recv_buf = kmem_alloc(vport->mtu, KM_SLEEP);
vport->send_buf = kmem_alloc(vport->mtu, KM_SLEEP);
+ if (strcmp(vport->minorp->sname, VLDC_HVCTL_SVCNAME) == 0)
+ vport->cookie_buf = kmem_alloc(vldc_max_cookie, KM_SLEEP);
+
vport->is_stream = B_FALSE; /* assume not a stream */
vport->hanged_up = B_FALSE;
@@ -1057,50 +1064,57 @@ i_vldc_ioctl_read_cookie(vldc_port_t *vport, int vldc_instance, void *arg,
int mode)
{
vldc_data_t copy_info;
- caddr_t buf;
- uint64_t len;
+ uint64_t len, balance, copy_size;
+ caddr_t src_addr, dst_addr;
int rv;
if (ddi_copyin(arg, &copy_info, sizeof (copy_info), mode) == -1) {
return (EFAULT);
}
- len = copy_info.length;
- if (len > vldc_max_cookie) {
- return (EINVAL);
- }
+ len = balance = copy_info.length;
+ src_addr = (caddr_t)copy_info.src_addr;
+ dst_addr = (caddr_t)copy_info.dst_addr;
+ while (balance > 0) {
- /* allocate a temporary buffer */
- buf = kmem_alloc(len, KM_SLEEP);
+ /* get the max amount to the copied */
+ copy_size = MIN(balance, vldc_max_cookie);
- mutex_enter(&vport->minorp->lock);
+ mutex_enter(&vport->minorp->lock);
- D2("i_vldc_ioctl_read_cookie: vldc@%d:%d reading from 0x%lx "
- "size 0x%lx to 0x%lx\n", vldc_instance, vport->number,
- copy_info.dst_addr, copy_info.length, copy_info.src_addr);
+ D2("i_vldc_ioctl_read_cookie: vldc@%d:%d reading from 0x%p "
+ "size 0x%lx to 0x%p\n", vldc_instance, vport->number,
+ dst_addr, copy_size, src_addr);
- /* read from the HV into the temporary buffer */
- rv = ldc_mem_rdwr_pa(vport->ldc_handle, buf, &len,
- (caddr_t)copy_info.dst_addr, LDC_COPY_IN);
- if (rv != 0) {
- DWARN("i_vldc_ioctl_read_cookie: vldc@%d:%d cannot read "
- "address 0x%lx, rv=%d\n", vldc_instance, vport->number,
- copy_info.dst_addr, rv);
- mutex_exit(&vport->minorp->lock);
- kmem_free(buf, copy_info.length);
- return (EFAULT);
- }
+ /* read from the HV into the temporary buffer */
+ rv = ldc_mem_rdwr_pa(vport->ldc_handle, vport->cookie_buf,
+ &copy_size, dst_addr, LDC_COPY_IN);
+ if (rv != 0) {
+ DWARN("i_vldc_ioctl_read_cookie: vldc@%d:%d cannot "
+ "read address 0x%p, rv=%d\n",
+ vldc_instance, vport->number, dst_addr, rv);
+ mutex_exit(&vport->minorp->lock);
+ return (EFAULT);
+ }
- D2("i_vldc_ioctl_read_cookie: vldc@%d:%d read succeeded\n",
- vldc_instance, vport->number);
+ D2("i_vldc_ioctl_read_cookie: vldc@%d:%d read succeeded\n",
+ vldc_instance, vport->number);
- mutex_exit(&vport->minorp->lock);
+ mutex_exit(&vport->minorp->lock);
- /* copy data from temporary buffer out to the caller and free buffer */
- rv = ddi_copyout(buf, (caddr_t)copy_info.src_addr, len, mode);
- kmem_free(buf, copy_info.length);
- if (rv != 0) {
- return (EFAULT);
+ /*
+ * copy data from temporary buffer out to the
+ * caller and free buffer
+ */
+ rv = ddi_copyout(vport->cookie_buf, src_addr, copy_size, mode);
+ if (rv != 0) {
+ return (EFAULT);
+ }
+
+ /* adjust len, source and dest */
+ balance -= copy_size;
+ src_addr += copy_size;
+ dst_addr += copy_size;
}
/* set the structure to reflect outcome */
@@ -1118,54 +1132,58 @@ i_vldc_ioctl_write_cookie(vldc_port_t *vport, int vldc_instance, void *arg,
int mode)
{
vldc_data_t copy_info;
- caddr_t buf;
- uint64_t len;
+ uint64_t len, balance, copy_size;
+ caddr_t src_addr, dst_addr;
int rv;
- if (ddi_copyin((caddr_t)arg, &copy_info,
- sizeof (copy_info), mode) != 0) {
+ if (ddi_copyin(arg, &copy_info, sizeof (copy_info), mode) != 0) {
return (EFAULT);
}
- len = copy_info.length;
- if (len > vldc_max_cookie) {
- return (EINVAL);
- }
-
D2("i_vldc_ioctl_write_cookie: vldc@%d:%d writing 0x%lx size 0x%lx "
"to 0x%lx\n", vldc_instance, vport->number, copy_info.src_addr,
copy_info.length, copy_info.dst_addr);
- /* allocate a temporary buffer */
- buf = kmem_alloc(len, KM_SLEEP);
+ len = balance = copy_info.length;
+ src_addr = (caddr_t)copy_info.src_addr;
+ dst_addr = (caddr_t)copy_info.dst_addr;
+ while (balance > 0) {
- /* copy into the temporary buffer the data to be written to the HV */
- if (ddi_copyin((caddr_t)copy_info.src_addr, buf,
- copy_info.length, mode) != 0) {
- kmem_free(buf, copy_info.length);
- return (EFAULT);
- }
+ /* get the max amount to the copied */
+ copy_size = MIN(balance, vldc_max_cookie);
- mutex_enter(&vport->minorp->lock);
+ /*
+ * copy into the temporary buffer the data
+ * to be written to the HV
+ */
+ if (ddi_copyin((caddr_t)src_addr, vport->cookie_buf,
+ copy_size, mode) != 0) {
+ return (EFAULT);
+ }
- /* write the data from the temporary buffer to the HV */
- rv = ldc_mem_rdwr_pa(vport->ldc_handle, buf, &len,
- (caddr_t)copy_info.dst_addr, LDC_COPY_OUT);
- if (rv != 0) {
- DWARN("i_vldc_ioctl_write_cookie: vldc@%d:%d failed to write at"
- " address 0x%lx\n, rv=%d", vldc_instance, vport->number,
- copy_info.dst_addr, rv);
- mutex_exit(&vport->minorp->lock);
- kmem_free(buf, copy_info.length);
- return (EFAULT);
- }
+ mutex_enter(&vport->minorp->lock);
+
+ /* write the data from the temporary buffer to the HV */
+ rv = ldc_mem_rdwr_pa(vport->ldc_handle, vport->cookie_buf,
+ &copy_size, dst_addr, LDC_COPY_OUT);
+ if (rv != 0) {
+ DWARN("i_vldc_ioctl_write_cookie: vldc@%d:%d "
+ "failed to write at address 0x%p\n, rv=%d",
+ vldc_instance, vport->number, dst_addr, rv);
+ mutex_exit(&vport->minorp->lock);
+ return (EFAULT);
+ }
- D2("i_vldc_ioctl_write_cookie: vldc@%d:%d write succeeded\n",
- vldc_instance, vport->number);
+ D2("i_vldc_ioctl_write_cookie: vldc@%d:%d write succeeded\n",
+ vldc_instance, vport->number);
- mutex_exit(&vport->minorp->lock);
+ mutex_exit(&vport->minorp->lock);
- kmem_free(buf, copy_info.length);
+ /* adjust len, source and dest */
+ balance -= copy_size;
+ src_addr += copy_size;
+ dst_addr += copy_size;
+ }
/* set the structure to reflect outcome */
copy_info.length = len;
@@ -1315,13 +1333,19 @@ vldc_ioctl(dev_t dev, int cmd, intptr_t arg, int mode, cred_t *credp,
break;
case VLDC_IOCTL_READ_COOKIE:
-
+ if (strcmp(vport->minorp->sname, VLDC_HVCTL_SVCNAME)) {
+ rv = EINVAL;
+ break;
+ }
rv = i_vldc_ioctl_read_cookie(vport, instance,
(void *)arg, mode);
break;
case VLDC_IOCTL_WRITE_COOKIE:
-
+ if (strcmp(vport->minorp->sname, VLDC_HVCTL_SVCNAME)) {
+ rv = EINVAL;
+ break;
+ }
rv = i_vldc_ioctl_write_cookie(vport, instance,
(void *)arg, mode);
break;
generated by cgit v1.2.3 (git 2.46.0) at 2025-10-12 06:05:07 +0000