[PATCH] shpchp: use the PCI core for hotplug resource management

This patch converts the standard hotplug controller driver to use
the PCI core for resource management. This eliminates a whole lot
of duplicated code, and integrates shpchp in the system's normal
PCI handling code.

Signed-off-by: Rajesh Shah <rajesh.shah@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

1 files changed, 0 insertions, 278 deletions

diff --git a/drivers/pci/hotplug/shpchprm_nonacpi.c b/drivers/pci/hotplug/shpchprm_nonacpi.c
index 5f75ef7f3df2..9d4ccae5f78e 100644
--- a/drivers/pci/hotplug/shpchprm_nonacpi.c
+++ b/drivers/pci/hotplug/shpchprm_nonacpi.c
@@ -34,23 +34,14 @@
 #include <linux/pci.h>
 #include <linux/init.h>
 #include <asm/uaccess.h>
-#ifdef CONFIG_IA64
-#include <asm/iosapic.h>
-#endif
 #include "shpchp.h"
 #include "shpchprm.h"
-#include "shpchprm_nonacpi.h"
 
 void shpchprm_cleanup(void)
 {
         return;
 }
 
-int shpchprm_print_pirt(void)
-{
-        return 0;
-}
-
 int shpchprm_get_physical_slot_number(struct controller *ctrl, u32 *sun, u8 busnum, u8 devnum)
 {
         int     offset = devnum - ctrl->slot_device_offset;
@@ -60,275 +51,6 @@ int shpchprm_get_physical_slot_number(struct controller *ctrl, u32 *sun, u8 busn
         return 0;
 }
 
-static void print_pci_resource ( struct pci_resource    *aprh)
-{
-        struct pci_resource     *res;
-
-        for (res = aprh; res; res = res->next)
-                dbg("        base= 0x%x length= 0x%x\n", res->base, res->length);
-}
-
-
-static void phprm_dump_func_res( struct pci_func *fun)
-{
-        struct pci_func *func = fun;
-
-        if (func->bus_head) {
-                dbg(":    BUS Resources:\n");
-                print_pci_resource (func->bus_head);
-        }
-        if (func->io_head) {
-                dbg(":    IO Resources:\n");
-                print_pci_resource (func->io_head);
-        }
-        if (func->mem_head) {
-                dbg(":    MEM Resources:\n");
-                print_pci_resource (func->mem_head);
-        }
-        if (func->p_mem_head) {
-                dbg(":    PMEM Resources:\n");
-                print_pci_resource (func->p_mem_head);
-        }
-}
-
-static int phprm_get_used_resources (
-        struct controller *ctrl,
-        struct pci_func *func
-        )
-{
-        return shpchp_save_used_resources (ctrl, func, !DISABLE_CARD);
-}
-
-static int phprm_delete_resource(
-        struct pci_resource **aprh,
-        ulong base,
-        ulong size)
-{
-        struct pci_resource *res;
-        struct pci_resource *prevnode;
-        struct pci_resource *split_node;
-        ulong tbase;
-
-        shpchp_resource_sort_and_combine(aprh);
-
-        for (res = *aprh; res; res = res->next) {
-                if (res->base > base)
-                        continue;
-
-                if ((res->base + res->length) < (base + size))
-                        continue;
-
-                if (res->base < base) {
-                        tbase = base;
-
-                        if ((res->length - (tbase - res->base)) < size)
-                                continue;
-
-                        split_node = (struct pci_resource *) kmalloc(sizeof(struct pci_resource), GFP_KERNEL);
-                        if (!split_node)
-                                return -ENOMEM;
-
-                        split_node->base = res->base;
-                        split_node->length = tbase - res->base;
-                        res->base = tbase;
-                        res->length -= split_node->length;
-
-                        split_node->next = res->next;
-                        res->next = split_node;
-                }
-
-                if (res->length >= size) {
-                        split_node = (struct pci_resource*) kmalloc(sizeof(struct pci_resource), GFP_KERNEL);
-                        if (!split_node)
-                                return -ENOMEM;
-
-                        split_node->base = res->base + size;
-                        split_node->length = res->length - size;
-                        res->length = size;
-
-                        split_node->next = res->next;
-                        res->next = split_node;
-                }
-
-                if (*aprh == res) {
-                        *aprh = res->next;
-                } else {
-                        prevnode = *aprh;
-                        while (prevnode->next != res)
-                                prevnode = prevnode->next;
-
-                        prevnode->next = res->next;
-                }
-                res->next = NULL;
-                kfree(res);
-                break;
-        }
-
-        return 0;
-}
-
-
-static int phprm_delete_resources(
-        struct pci_resource **aprh,
-        struct pci_resource *this
-        )
-{
-        struct pci_resource *res;
-
-        for (res = this; res; res = res->next)
-                phprm_delete_resource(aprh, res->base, res->length);
-
-        return 0;
-}
-
-
-static int configure_existing_function(
-        struct controller *ctrl,
-        struct pci_func *func
-        )
-{
-        int rc;
-
-        /* see how much resources the func has used. */
-        rc = phprm_get_used_resources (ctrl, func);
-
-        if (!rc) {
-                /* subtract the resources used by the func from ctrl resources */
-                rc  = phprm_delete_resources (&ctrl->bus_head, func->bus_head);
-                rc |= phprm_delete_resources (&ctrl->io_head, func->io_head);
-                rc |= phprm_delete_resources (&ctrl->mem_head, func->mem_head);
-                rc |= phprm_delete_resources (&ctrl->p_mem_head, func->p_mem_head);
-                if (rc)
-                        warn("aCEF: cannot del used resources\n");
-        } else
-                err("aCEF: cannot get used resources\n");
-
-        return rc;
-}
-
-static int bind_pci_resources_to_slots ( struct controller *ctrl)
-{
-        struct pci_func *func, new_func;
-        int busn = ctrl->slot_bus;
-        int devn, funn;
-        u32     vid;
-
-        for (devn = 0; devn < 32; devn++) {
-                for (funn = 0; funn < 8; funn++) {
-                        /*
-                        if (devn == ctrl->device && funn == ctrl->function)
-                                continue;
-                         */
-                        /* find out if this entry is for an occupied slot */
-                        vid = 0xFFFFFFFF;
-
-                        pci_bus_read_config_dword(ctrl->pci_dev->subordinate, PCI_DEVFN(devn, funn), PCI_VENDOR_ID, &vid);
-
-                        if (vid != 0xFFFFFFFF) {
-                                func = shpchp_slot_find(busn, devn, funn);
-                                if (!func) {
-                                        memset(&new_func, 0, sizeof(struct pci_func));
-                                        new_func.bus = busn;
-                                        new_func.device = devn;
-                                        new_func.function = funn;
-                                        new_func.is_a_board = 1;
-                                        configure_existing_function(ctrl, &new_func);
-                                        phprm_dump_func_res(&new_func);
-                                } else {
-                                        configure_existing_function(ctrl, func);
-                                        phprm_dump_func_res(func);
-                                }
-                                dbg("aCCF:existing PCI 0x%x Func ResourceDump\n", ctrl->bus);
-                        }
-                }
-        }
-
-        return 0;
-}
-
-static void phprm_dump_ctrl_res( struct controller *ctlr)
-{
-        struct controller *ctrl = ctlr;
-
-        if (ctrl->bus_head) {
-                dbg(":    BUS Resources:\n");
-                print_pci_resource (ctrl->bus_head);
-        }
-        if (ctrl->io_head) {
-                dbg(":    IO Resources:\n");
-                print_pci_resource (ctrl->io_head);
-        }
-        if (ctrl->mem_head) {
-                dbg(":    MEM Resources:\n");
-                print_pci_resource (ctrl->mem_head);
-        }
-        if (ctrl->p_mem_head) {
-                dbg(":    PMEM Resources:\n");
-                print_pci_resource (ctrl->p_mem_head);
-        }
-}
-
-/*
- * phprm_find_available_resources
- *
- *  Finds available memory, IO, and IRQ resources for programming
- *  devices which may be added to the system
- *  this function is for hot plug ADD!
- *
- * returns 0 if success
- */
-int shpchprm_find_available_resources(struct controller *ctrl)
-{
-        struct pci_func func;
-        u32 rc;
-
-        memset(&func, 0, sizeof(struct pci_func));
-
-        func.bus = ctrl->bus;
-        func.device = ctrl->device;
-        func.function = ctrl->function;
-        func.is_a_board = 1;
-
-        /* Get resources for this PCI bridge */
-        rc = shpchp_save_used_resources (ctrl, &func, !DISABLE_CARD);
-        dbg("%s: shpchp_save_used_resources rc = %d\n", __FUNCTION__, rc);
-
-        if (func.mem_head)
-                func.mem_head->next = ctrl->mem_head;
-        ctrl->mem_head = func.mem_head;
-
-        if (func.p_mem_head)
-                func.p_mem_head->next = ctrl->p_mem_head;
-        ctrl->p_mem_head = func.p_mem_head;
-
-        if (func.io_head)
-                func.io_head->next = ctrl->io_head;
-        ctrl->io_head = func.io_head;
-
-        if(func.bus_head)
-                func.bus_head->next = ctrl->bus_head;
-        ctrl->bus_head = func.bus_head;
-        if (ctrl->bus_head)
-                phprm_delete_resource(&ctrl->bus_head, ctrl->pci_dev->subordinate->number, 1);
-
-        dbg("%s:pre-Bind PCI 0x%x Ctrl Resource Dump\n", __FUNCTION__, ctrl->bus);
-        phprm_dump_ctrl_res(ctrl);
-        bind_pci_resources_to_slots (ctrl);
-
-        dbg("%s:post-Bind PCI 0x%x Ctrl Resource Dump\n", __FUNCTION__, ctrl->bus);
-        phprm_dump_ctrl_res(ctrl);
-
-
-        /* If all of the following fail, we don't have any resources for hot plug add */
-        rc = 1;
-        rc &= shpchp_resource_sort_and_combine(&(ctrl->mem_head));
-        rc &= shpchp_resource_sort_and_combine(&(ctrl->p_mem_head));
-        rc &= shpchp_resource_sort_and_combine(&(ctrl->io_head));
-        rc &= shpchp_resource_sort_and_combine(&(ctrl->bus_head));
-
-        return (rc);
-}
-
 int shpchprm_set_hpp(
         struct controller *ctrl,
         struct pci_func *func,