ipmi_ocp.c

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/* SPDX-License-Identifier: GPL-2.0-or-later */
/*
 * Place in devicetree.cb:
 *
 * chip drivers/ipmi/ocp # OCP specific IPMI porting
        device pnp ca2.1 on end
 * end
 */
 
#include <console/console.h>
#include <device/device.h>
#include <device/pnp.h>
#include <drivers/ipmi/ipmi_kcs.h>
#include <drivers/ocp/dmi/ocp_dmi.h>
#include <types.h>
 
#include "ipmi_ocp.h"
 
static enum cb_err ipmi_set_ppin(struct device *dev)
{
        int ret;
        struct ipmi_rsp rsp;
        struct ppin_req req = {0};
 
        req.cpu0_lo = xeon_sp_ppin[0].lo;
        req.cpu0_hi = xeon_sp_ppin[0].hi;
        if (CONFIG_MAX_SOCKET > 1) {
                req.cpu1_lo = xeon_sp_ppin[1].lo;
                req.cpu1_hi = xeon_sp_ppin[1].hi;
        }
        ret = ipmi_kcs_message(dev->path.pnp.port, IPMI_NETFN_OEM, 0x0, IPMI_OEM_SET_PPIN,
                (const unsigned char *) &req, sizeof(req), (unsigned char *) &rsp, sizeof(rsp));
 
        if (ret < sizeof(struct ipmi_rsp) || rsp.completion_code) {
                printk(BIOS_ERR, "IPMI: %s command failed (ret=%d resp=0x%x)\n",
                        __func__, ret, rsp.completion_code);
                        return CB_ERR;
        }
        printk(BIOS_DEBUG, "IPMI: %s command success\n", __func__);
        return CB_SUCCESS;
}
 
static void ipmi_ocp_init(struct device *dev)
{
        /* Add OCP specific IPMI command */
}
 
static void ipmi_ocp_final(struct device *dev)
{
        /* Add OCP specific IPMI command */
 
        if (CONFIG(OCP_DMI))
                ipmi_set_ppin(dev);
}
 
static void ipmi_set_resources(struct device *dev)
{
        struct resource *res;
 
        for (res = dev->resource_list; res; res = res->next) {
                if (!(res->flags & IORESOURCE_ASSIGNED))
                        continue;
 
                res->flags |= IORESOURCE_STORED;
                report_resource_stored(dev, res, "");
        }
}
 
static void ipmi_read_resources(struct device *dev)
{
        struct resource *res = new_resource(dev, 0);
        res->base = dev->path.pnp.port;
        res->size = 2;
        res->flags = IORESOURCE_IO | IORESOURCE_ASSIGNED | IORESOURCE_FIXED;
}
 
static struct device_operations ops = {
        .read_resources   = ipmi_read_resources,
        .set_resources    = ipmi_set_resources,
        .init             = ipmi_ocp_init,
        .final            = ipmi_ocp_final,
};
 
static void enable_dev(struct device *dev)
{
        if (dev->path.type != DEVICE_PATH_PNP)
                printk(BIOS_ERR, "%s: Unsupported device type\n",
                       dev_path(dev));
        else if (dev->path.pnp.port & 1)
                printk(BIOS_ERR, "%s: Base address needs to be aligned to 2\n",
                       dev_path(dev));
        else
                dev->ops = &ops;
}
 
struct chip_operations drivers_ipmi_ocp_ops = {
        CHIP_NAME("IPMI OCP")
        .enable_dev = enable_dev,
};