diff options
| -rw-r--r-- | drivers/char/ipmi/ipmi_si_intf.c | 117 |
1 files changed, 105 insertions, 12 deletions
diff --git a/drivers/char/ipmi/ipmi_si_intf.c b/drivers/char/ipmi/ipmi_si_intf.c index 60f2f968b68..4fb36d4142f 100644 --- a/drivers/char/ipmi/ipmi_si_intf.c +++ b/drivers/char/ipmi/ipmi_si_intf.c @@ -110,6 +110,21 @@ enum si_type { SI_KCS, SI_SMIC, SI_BT }; +struct ipmi_device_id { + unsigned char device_id; + unsigned char device_revision; + unsigned char firmware_revision_1; + unsigned char firmware_revision_2; + unsigned char ipmi_version; + unsigned char additional_device_support; + unsigned char manufacturer_id[3]; + unsigned char product_id[2]; + unsigned char aux_firmware_revision[4]; +} __attribute__((packed)); + +#define ipmi_version_major(v) ((v)->ipmi_version & 0xf) +#define ipmi_version_minor(v) ((v)->ipmi_version >> 4) + struct smi_info { ipmi_smi_t intf; @@ -132,12 +147,24 @@ struct smi_info void (*irq_cleanup)(struct smi_info *info); unsigned int io_size; + /* Per-OEM handler, called from handle_flags(). + Returns 1 when handle_flags() needs to be re-run + or 0 indicating it set si_state itself. + */ + int (*oem_data_avail_handler)(struct smi_info *smi_info); + /* Flags from the last GET_MSG_FLAGS command, used when an ATTN is set to hold the flags until we are done handling everything from the flags. */ #define RECEIVE_MSG_AVAIL 0x01 #define EVENT_MSG_BUFFER_FULL 0x02 #define WDT_PRE_TIMEOUT_INT 0x08 +#define OEM0_DATA_AVAIL 0x20 +#define OEM1_DATA_AVAIL 0x40 +#define OEM2_DATA_AVAIL 0x80 +#define OEM_DATA_AVAIL (OEM0_DATA_AVAIL | \ + OEM1_DATA_AVAIL | \ + OEM2_DATA_AVAIL) unsigned char msg_flags; /* If set to true, this will request events the next time the @@ -176,11 +203,7 @@ struct smi_info interrupts. */ int interrupt_disabled; - unsigned char ipmi_si_dev_rev; - unsigned char ipmi_si_fw_rev_major; - unsigned char ipmi_si_fw_rev_minor; - unsigned char ipmi_version_major; - unsigned char ipmi_version_minor; + struct ipmi_device_id device_id; /* Slave address, could be reported from DMI. */ unsigned char slave_addr; @@ -323,6 +346,7 @@ static inline void enable_si_irq(struct smi_info *smi_info) static void handle_flags(struct smi_info *smi_info) { + retry: if (smi_info->msg_flags & WDT_PRE_TIMEOUT_INT) { /* Watchdog pre-timeout */ spin_lock(&smi_info->count_lock); @@ -372,6 +396,10 @@ static void handle_flags(struct smi_info *smi_info) smi_info->curr_msg->data, smi_info->curr_msg->data_size); smi_info->si_state = SI_GETTING_EVENTS; + } else if (smi_info->msg_flags & OEM_DATA_AVAIL) { + if (smi_info->oem_data_avail_handler) + if (smi_info->oem_data_avail_handler(smi_info)) + goto retry; } else { smi_info->si_state = SI_NORMAL; } @@ -1927,11 +1955,8 @@ static int try_get_dev_id(struct smi_info *smi_info) } /* Record info from the get device id, in case we need it. */ - smi_info->ipmi_si_dev_rev = resp[4] & 0xf; - smi_info->ipmi_si_fw_rev_major = resp[5] & 0x7f; - smi_info->ipmi_si_fw_rev_minor = resp[6]; - smi_info->ipmi_version_major = resp[7] & 0xf; - smi_info->ipmi_version_minor = resp[7] >> 4; + memcpy(&smi_info->device_id, &resp[3], + min_t(unsigned long, resp_len-3, sizeof(smi_info->device_id))); out: kfree(resp); @@ -1992,6 +2017,72 @@ static int stat_file_read_proc(char *page, char **start, off_t off, return (out - ((char *) page)); } +/* + * oem_data_avail_to_receive_msg_avail + * @info - smi_info structure with msg_flags set + * + * Converts flags from OEM_DATA_AVAIL to RECEIVE_MSG_AVAIL + * Returns 1 indicating need to re-run handle_flags(). + */ +static int oem_data_avail_to_receive_msg_avail(struct smi_info *smi_info) +{ + smi_info->msg_flags = (smi_info->msg_flags & ~OEM_DATA_AVAIL) | + RECEIVE_MSG_AVAIL; + return 1; +} + +/* + * setup_dell_poweredge_oem_data_handler + * @info - smi_info.device_id must be populated + * + * Systems that match, but have firmware version < 1.40 may assert + * OEM0_DATA_AVAIL on their own, without being told via Set Flags that + * it's safe to do so. Such systems will de-assert OEM1_DATA_AVAIL + * upon receipt of IPMI_GET_MSG_CMD, so we should treat these flags + * as RECEIVE_MSG_AVAIL instead. + * + * As Dell has no plans to release IPMI 1.5 firmware that *ever* + * assert the OEM[012] bits, and if it did, the driver would have to + * change to handle that properly, we don't actually check for the + * firmware version. + * Device ID = 0x20 BMC on PowerEdge 8G servers + * Device Revision = 0x80 + * Firmware Revision1 = 0x01 BMC version 1.40 + * Firmware Revision2 = 0x40 BCD encoded + * IPMI Version = 0x51 IPMI 1.5 + * Manufacturer ID = A2 02 00 Dell IANA + * + */ +#define DELL_POWEREDGE_8G_BMC_DEVICE_ID 0x20 +#define DELL_POWEREDGE_8G_BMC_DEVICE_REV 0x80 +#define DELL_POWEREDGE_8G_BMC_IPMI_VERSION 0x51 +#define DELL_IANA_MFR_ID {0xA2, 0x02, 0x00} +static void setup_dell_poweredge_oem_data_handler(struct smi_info *smi_info) +{ + struct ipmi_device_id *id = &smi_info->device_id; + const char mfr[3]=DELL_IANA_MFR_ID; + if (!memcmp(mfr, id->manufacturer_id, sizeof(mfr)) && + id->device_id == DELL_POWEREDGE_8G_BMC_DEVICE_ID && + id->device_revision == DELL_POWEREDGE_8G_BMC_DEVICE_REV && + id->ipmi_version == DELL_POWEREDGE_8G_BMC_IPMI_VERSION) { + smi_info->oem_data_avail_handler = + oem_data_avail_to_receive_msg_avail; + } +} + +/* + * setup_oem_data_handler + * @info - smi_info.device_id must be filled in already + * + * Fills in smi_info.device_id.oem_data_available_handler + * when we know what function to use there. + */ + +static void setup_oem_data_handler(struct smi_info *smi_info) +{ + setup_dell_poweredge_oem_data_handler(smi_info); +} + /* Returns 0 if initialized, or negative on an error. */ static int init_one_smi(int intf_num, struct smi_info **smi) { @@ -2090,6 +2181,8 @@ static int init_one_smi(int intf_num, struct smi_info **smi) if (rv) goto out_err; + setup_oem_data_handler(new_smi); + /* Try to claim any interrupts. */ new_smi->irq_setup(new_smi); @@ -2123,8 +2216,8 @@ static int init_one_smi(int intf_num, struct smi_info **smi) rv = ipmi_register_smi(&handlers, new_smi, - new_smi->ipmi_version_major, - new_smi->ipmi_version_minor, + ipmi_version_major(&new_smi->device_id), + ipmi_version_minor(&new_smi->device_id), new_smi->slave_addr, &(new_smi->intf)); if (rv) { |