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-rw-r--r--arch/powerpc/platforms/iseries/vio.c556
1 files changed, 0 insertions, 556 deletions
diff --git a/arch/powerpc/platforms/iseries/vio.c b/arch/powerpc/platforms/iseries/vio.c
deleted file mode 100644
index 04be62d368a6..000000000000
--- a/arch/powerpc/platforms/iseries/vio.c
+++ /dev/null
@@ -1,556 +0,0 @@
-/*
- * Legacy iSeries specific vio initialisation
- * that needs to be built in (not a module).
- *
- * © Copyright 2007 IBM Corporation
- * Author: Stephen Rothwell
- * Some parts collected from various other files
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License as
- * published by the Free Software Foundation; either version 2 of the
- * License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- */
-#include <linux/of.h>
-#include <linux/init.h>
-#include <linux/slab.h>
-#include <linux/completion.h>
-#include <linux/proc_fs.h>
-#include <linux/export.h>
-
-#include <asm/firmware.h>
-#include <asm/vio.h>
-#include <asm/iseries/vio.h>
-#include <asm/iseries/iommu.h>
-#include <asm/iseries/hv_types.h>
-#include <asm/iseries/hv_lp_event.h>
-
-#define FIRST_VTY 0
-#define NUM_VTYS 1
-#define FIRST_VSCSI (FIRST_VTY + NUM_VTYS)
-#define NUM_VSCSIS 1
-#define FIRST_VLAN (FIRST_VSCSI + NUM_VSCSIS)
-#define NUM_VLANS HVMAXARCHITECTEDVIRTUALLANS
-#define FIRST_VIODASD (FIRST_VLAN + NUM_VLANS)
-#define NUM_VIODASDS HVMAXARCHITECTEDVIRTUALDISKS
-#define FIRST_VIOCD (FIRST_VIODASD + NUM_VIODASDS)
-#define NUM_VIOCDS HVMAXARCHITECTEDVIRTUALCDROMS
-#define FIRST_VIOTAPE (FIRST_VIOCD + NUM_VIOCDS)
-#define NUM_VIOTAPES HVMAXARCHITECTEDVIRTUALTAPES
-
-struct vio_waitevent {
- struct completion com;
- int rc;
- u16 sub_result;
-};
-
-struct vio_resource {
- char rsrcname[10];
- char type[4];
- char model[3];
-};
-
-static struct property *new_property(const char *name, int length,
- const void *value)
-{
- struct property *np = kzalloc(sizeof(*np) + strlen(name) + 1 + length,
- GFP_KERNEL);
-
- if (!np)
- return NULL;
- np->name = (char *)(np + 1);
- np->value = np->name + strlen(name) + 1;
- strcpy(np->name, name);
- memcpy(np->value, value, length);
- np->length = length;
- return np;
-}
-
-static void free_property(struct property *np)
-{
- kfree(np);
-}
-
-static struct device_node *new_node(const char *path,
- struct device_node *parent)
-{
- struct device_node *np = kzalloc(sizeof(*np), GFP_KERNEL);
-
- if (!np)
- return NULL;
- np->full_name = kstrdup(path, GFP_KERNEL);
- if (!np->full_name) {
- kfree(np);
- return NULL;
- }
- of_node_set_flag(np, OF_DYNAMIC);
- kref_init(&np->kref);
- np->parent = of_node_get(parent);
- return np;
-}
-
-static void free_node(struct device_node *np)
-{
- struct property *next;
- struct property *prop;
-
- next = np->properties;
- while (next) {
- prop = next;
- next = prop->next;
- free_property(prop);
- }
- of_node_put(np->parent);
- kfree(np->full_name);
- kfree(np);
-}
-
-static int add_string_property(struct device_node *np, const char *name,
- const char *value)
-{
- struct property *nprop = new_property(name, strlen(value) + 1, value);
-
- if (!nprop)
- return 0;
- prom_add_property(np, nprop);
- return 1;
-}
-
-static int add_raw_property(struct device_node *np, const char *name,
- int length, const void *value)
-{
- struct property *nprop = new_property(name, length, value);
-
- if (!nprop)
- return 0;
- prom_add_property(np, nprop);
- return 1;
-}
-
-static struct device_node *do_device_node(struct device_node *parent,
- const char *name, u32 reg, u32 unit, const char *type,
- const char *compat, struct vio_resource *res)
-{
- struct device_node *np;
- char path[32];
-
- snprintf(path, sizeof(path), "/vdevice/%s@%08x", name, reg);
- np = new_node(path, parent);
- if (!np)
- return NULL;
- if (!add_string_property(np, "name", name) ||
- !add_string_property(np, "device_type", type) ||
- !add_string_property(np, "compatible", compat) ||
- !add_raw_property(np, "reg", sizeof(reg), &reg) ||
- !add_raw_property(np, "linux,unit_address",
- sizeof(unit), &unit)) {
- goto node_free;
- }
- if (res) {
- if (!add_raw_property(np, "linux,vio_rsrcname",
- sizeof(res->rsrcname), res->rsrcname) ||
- !add_raw_property(np, "linux,vio_type",
- sizeof(res->type), res->type) ||
- !add_raw_property(np, "linux,vio_model",
- sizeof(res->model), res->model))
- goto node_free;
- }
- np->name = of_get_property(np, "name", NULL);
- np->type = of_get_property(np, "device_type", NULL);
- of_attach_node(np);
-#ifdef CONFIG_PROC_DEVICETREE
- if (parent->pde) {
- struct proc_dir_entry *ent;
-
- ent = proc_mkdir(strrchr(np->full_name, '/') + 1, parent->pde);
- if (ent)
- proc_device_tree_add_node(np, ent);
- }
-#endif
- return np;
-
- node_free:
- free_node(np);
- return NULL;
-}
-
-/*
- * This is here so that we can dynamically add viodasd
- * devices without exposing all the above infrastructure.
- */
-struct vio_dev *vio_create_viodasd(u32 unit)
-{
- struct device_node *vio_root;
- struct device_node *np;
- struct vio_dev *vdev = NULL;
-
- vio_root = of_find_node_by_path("/vdevice");
- if (!vio_root)
- return NULL;
- np = do_device_node(vio_root, "viodasd", FIRST_VIODASD + unit, unit,
- "block", "IBM,iSeries-viodasd", NULL);
- of_node_put(vio_root);
- if (np) {
- vdev = vio_register_device_node(np);
- if (!vdev)
- free_node(np);
- }
- return vdev;
-}
-EXPORT_SYMBOL_GPL(vio_create_viodasd);
-
-static void __init handle_block_event(struct HvLpEvent *event)
-{
- struct vioblocklpevent *bevent = (struct vioblocklpevent *)event;
- struct vio_waitevent *pwe;
-
- if (event == NULL)
- /* Notification that a partition went away! */
- return;
- /* First, we should NEVER get an int here...only acks */
- if (hvlpevent_is_int(event)) {
- printk(KERN_WARNING "handle_viod_request: "
- "Yikes! got an int in viodasd event handler!\n");
- if (hvlpevent_need_ack(event)) {
- event->xRc = HvLpEvent_Rc_InvalidSubtype;
- HvCallEvent_ackLpEvent(event);
- }
- return;
- }
-
- switch (event->xSubtype & VIOMINOR_SUBTYPE_MASK) {
- case vioblockopen:
- /*
- * Handle a response to an open request. We get all the
- * disk information in the response, so update it. The
- * correlation token contains a pointer to a waitevent
- * structure that has a completion in it. update the
- * return code in the waitevent structure and post the
- * completion to wake up the guy who sent the request
- */
- pwe = (struct vio_waitevent *)event->xCorrelationToken;
- pwe->rc = event->xRc;
- pwe->sub_result = bevent->sub_result;
- complete(&pwe->com);
- break;
- case vioblockclose:
- break;
- default:
- printk(KERN_WARNING "handle_viod_request: unexpected subtype!");
- if (hvlpevent_need_ack(event)) {
- event->xRc = HvLpEvent_Rc_InvalidSubtype;
- HvCallEvent_ackLpEvent(event);
- }
- }
-}
-
-static void __init probe_disk(struct device_node *vio_root, u32 unit)
-{
- HvLpEvent_Rc hvrc;
- struct vio_waitevent we;
- u16 flags = 0;
-
-retry:
- init_completion(&we.com);
-
- /* Send the open event to OS/400 */
- hvrc = HvCallEvent_signalLpEventFast(viopath_hostLp,
- HvLpEvent_Type_VirtualIo,
- viomajorsubtype_blockio | vioblockopen,
- HvLpEvent_AckInd_DoAck, HvLpEvent_AckType_ImmediateAck,
- viopath_sourceinst(viopath_hostLp),
- viopath_targetinst(viopath_hostLp),
- (u64)(unsigned long)&we, VIOVERSION << 16,
- ((u64)unit << 48) | ((u64)flags<< 32),
- 0, 0, 0);
- if (hvrc != 0) {
- printk(KERN_WARNING "probe_disk: bad rc on HV open %d\n",
- (int)hvrc);
- return;
- }
-
- wait_for_completion(&we.com);
-
- if (we.rc != 0) {
- if (flags != 0)
- return;
- /* try again with read only flag set */
- flags = vioblockflags_ro;
- goto retry;
- }
-
- /* Send the close event to OS/400. We DON'T expect a response */
- hvrc = HvCallEvent_signalLpEventFast(viopath_hostLp,
- HvLpEvent_Type_VirtualIo,
- viomajorsubtype_blockio | vioblockclose,
- HvLpEvent_AckInd_NoAck, HvLpEvent_AckType_ImmediateAck,
- viopath_sourceinst(viopath_hostLp),
- viopath_targetinst(viopath_hostLp),
- 0, VIOVERSION << 16,
- ((u64)unit << 48) | ((u64)flags << 32),
- 0, 0, 0);
- if (hvrc != 0) {
- printk(KERN_WARNING "probe_disk: "
- "bad rc sending event to OS/400 %d\n", (int)hvrc);
- return;
- }
-
- do_device_node(vio_root, "viodasd", FIRST_VIODASD + unit, unit,
- "block", "IBM,iSeries-viodasd", NULL);
-}
-
-static void __init get_viodasd_info(struct device_node *vio_root)
-{
- int rc;
- u32 unit;
-
- rc = viopath_open(viopath_hostLp, viomajorsubtype_blockio, 2);
- if (rc) {
- printk(KERN_WARNING "get_viodasd_info: "
- "error opening path to host partition %d\n",
- viopath_hostLp);
- return;
- }
-
- /* Initialize our request handler */
- vio_setHandler(viomajorsubtype_blockio, handle_block_event);
-
- for (unit = 0; unit < HVMAXARCHITECTEDVIRTUALDISKS; unit++)
- probe_disk(vio_root, unit);
-
- vio_clearHandler(viomajorsubtype_blockio);
- viopath_close(viopath_hostLp, viomajorsubtype_blockio, 2);
-}
-
-static void __init handle_cd_event(struct HvLpEvent *event)
-{
- struct viocdlpevent *bevent;
- struct vio_waitevent *pwe;
-
- if (!event)
- /* Notification that a partition went away! */
- return;
-
- /* First, we should NEVER get an int here...only acks */
- if (hvlpevent_is_int(event)) {
- printk(KERN_WARNING "handle_cd_event: got an unexpected int\n");
- if (hvlpevent_need_ack(event)) {
- event->xRc = HvLpEvent_Rc_InvalidSubtype;
- HvCallEvent_ackLpEvent(event);
- }
- return;
- }
-
- bevent = (struct viocdlpevent *)event;
-
- switch (event->xSubtype & VIOMINOR_SUBTYPE_MASK) {
- case viocdgetinfo:
- pwe = (struct vio_waitevent *)event->xCorrelationToken;
- pwe->rc = event->xRc;
- pwe->sub_result = bevent->sub_result;
- complete(&pwe->com);
- break;
-
- default:
- printk(KERN_WARNING "handle_cd_event: "
- "message with unexpected subtype %0x04X!\n",
- event->xSubtype & VIOMINOR_SUBTYPE_MASK);
- if (hvlpevent_need_ack(event)) {
- event->xRc = HvLpEvent_Rc_InvalidSubtype;
- HvCallEvent_ackLpEvent(event);
- }
- }
-}
-
-static void __init get_viocd_info(struct device_node *vio_root)
-{
- HvLpEvent_Rc hvrc;
- u32 unit;
- struct vio_waitevent we;
- struct vio_resource *unitinfo;
- dma_addr_t unitinfo_dmaaddr;
- int ret;
-
- ret = viopath_open(viopath_hostLp, viomajorsubtype_cdio, 2);
- if (ret) {
- printk(KERN_WARNING
- "get_viocd_info: error opening path to host partition %d\n",
- viopath_hostLp);
- return;
- }
-
- /* Initialize our request handler */
- vio_setHandler(viomajorsubtype_cdio, handle_cd_event);
-
- unitinfo = iseries_hv_alloc(
- sizeof(*unitinfo) * HVMAXARCHITECTEDVIRTUALCDROMS,
- &unitinfo_dmaaddr, GFP_ATOMIC);
- if (!unitinfo) {
- printk(KERN_WARNING
- "get_viocd_info: error allocating unitinfo\n");
- goto clear_handler;
- }
-
- memset(unitinfo, 0, sizeof(*unitinfo) * HVMAXARCHITECTEDVIRTUALCDROMS);
-
- init_completion(&we.com);
-
- hvrc = HvCallEvent_signalLpEventFast(viopath_hostLp,
- HvLpEvent_Type_VirtualIo,
- viomajorsubtype_cdio | viocdgetinfo,
- HvLpEvent_AckInd_DoAck, HvLpEvent_AckType_ImmediateAck,
- viopath_sourceinst(viopath_hostLp),
- viopath_targetinst(viopath_hostLp),
- (u64)&we, VIOVERSION << 16, unitinfo_dmaaddr, 0,
- sizeof(*unitinfo) * HVMAXARCHITECTEDVIRTUALCDROMS, 0);
- if (hvrc != HvLpEvent_Rc_Good) {
- printk(KERN_WARNING
- "get_viocd_info: cdrom error sending event. rc %d\n",
- (int)hvrc);
- goto hv_free;
- }
-
- wait_for_completion(&we.com);
-
- if (we.rc) {
- printk(KERN_WARNING "get_viocd_info: bad rc %d:0x%04X\n",
- we.rc, we.sub_result);
- goto hv_free;
- }
-
- for (unit = 0; (unit < HVMAXARCHITECTEDVIRTUALCDROMS) &&
- unitinfo[unit].rsrcname[0]; unit++) {
- if (!do_device_node(vio_root, "viocd", FIRST_VIOCD + unit, unit,
- "block", "IBM,iSeries-viocd", &unitinfo[unit]))
- break;
- }
-
- hv_free:
- iseries_hv_free(sizeof(*unitinfo) * HVMAXARCHITECTEDVIRTUALCDROMS,
- unitinfo, unitinfo_dmaaddr);
- clear_handler:
- vio_clearHandler(viomajorsubtype_cdio);
- viopath_close(viopath_hostLp, viomajorsubtype_cdio, 2);
-}
-
-/* Handle interrupt events for tape */
-static void __init handle_tape_event(struct HvLpEvent *event)
-{
- struct vio_waitevent *we;
- struct viotapelpevent *tevent = (struct viotapelpevent *)event;
-
- if (event == NULL)
- /* Notification that a partition went away! */
- return;
-
- we = (struct vio_waitevent *)event->xCorrelationToken;
- switch (event->xSubtype & VIOMINOR_SUBTYPE_MASK) {
- case viotapegetinfo:
- we->rc = tevent->sub_type_result;
- complete(&we->com);
- break;
- default:
- printk(KERN_WARNING "handle_tape_event: weird ack\n");
- }
-}
-
-static void __init get_viotape_info(struct device_node *vio_root)
-{
- HvLpEvent_Rc hvrc;
- u32 unit;
- struct vio_resource *unitinfo;
- dma_addr_t unitinfo_dmaaddr;
- size_t len = sizeof(*unitinfo) * HVMAXARCHITECTEDVIRTUALTAPES;
- struct vio_waitevent we;
- int ret;
-
- init_completion(&we.com);
-
- ret = viopath_open(viopath_hostLp, viomajorsubtype_tape, 2);
- if (ret) {
- printk(KERN_WARNING "get_viotape_info: "
- "error on viopath_open to hostlp %d\n", ret);
- return;
- }
-
- vio_setHandler(viomajorsubtype_tape, handle_tape_event);
-
- unitinfo = iseries_hv_alloc(len, &unitinfo_dmaaddr, GFP_ATOMIC);
- if (!unitinfo)
- goto clear_handler;
-
- memset(unitinfo, 0, len);
-
- hvrc = HvCallEvent_signalLpEventFast(viopath_hostLp,
- HvLpEvent_Type_VirtualIo,
- viomajorsubtype_tape | viotapegetinfo,
- HvLpEvent_AckInd_DoAck, HvLpEvent_AckType_ImmediateAck,
- viopath_sourceinst(viopath_hostLp),
- viopath_targetinst(viopath_hostLp),
- (u64)(unsigned long)&we, VIOVERSION << 16,
- unitinfo_dmaaddr, len, 0, 0);
- if (hvrc != HvLpEvent_Rc_Good) {
- printk(KERN_WARNING "get_viotape_info: hv error on op %d\n",
- (int)hvrc);
- goto hv_free;
- }
-
- wait_for_completion(&we.com);
-
- for (unit = 0; (unit < HVMAXARCHITECTEDVIRTUALTAPES) &&
- unitinfo[unit].rsrcname[0]; unit++) {
- if (!do_device_node(vio_root, "viotape", FIRST_VIOTAPE + unit,
- unit, "byte", "IBM,iSeries-viotape",
- &unitinfo[unit]))
- break;
- }
-
- hv_free:
- iseries_hv_free(len, unitinfo, unitinfo_dmaaddr);
- clear_handler:
- vio_clearHandler(viomajorsubtype_tape);
- viopath_close(viopath_hostLp, viomajorsubtype_tape, 2);
-}
-
-static int __init iseries_vio_init(void)
-{
- struct device_node *vio_root;
- int ret = -ENODEV;
-
- if (!firmware_has_feature(FW_FEATURE_ISERIES))
- goto out;
-
- iommu_vio_init();
-
- vio_root = of_find_node_by_path("/vdevice");
- if (!vio_root)
- goto out;
-
- if (viopath_hostLp == HvLpIndexInvalid) {
- vio_set_hostlp();
- /* If we don't have a host, bail out */
- if (viopath_hostLp == HvLpIndexInvalid)
- goto put_node;
- }
-
- get_viodasd_info(vio_root);
- get_viocd_info(vio_root);
- get_viotape_info(vio_root);
-
- ret = 0;
-
- put_node:
- of_node_put(vio_root);
- out:
- return ret;
-}
-arch_initcall(iseries_vio_init);
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.