static int puts(const char *s)
{
- _sclp_print_early(s);
+ sclp_early_printk(s);
return 0;
}
u8 data[0]; /* Subsequent Data passed verbatim to SCLP ET 24 */
} __packed;
-int _sclp_get_core_info_early(struct sclp_core_info *info);
+int sclp_early_get_core_info(struct sclp_core_info *info);
+void sclp_early_get_ipl_info(struct sclp_ipl_info *info);
+void sclp_early_detect(void);
+void sclp_early_printk(const char *s);
+void __sclp_early_printk(const char *s, unsigned int len);
+
int _sclp_get_core_info(struct sclp_core_info *info);
int sclp_core_configure(u8 core);
int sclp_core_deconfigure(u8 core);
int sclp_chp_configure(struct chp_id chpid);
int sclp_chp_deconfigure(struct chp_id chpid);
int sclp_chp_read_info(struct sclp_chp_info *info);
-void sclp_get_ipl_info(struct sclp_ipl_info *info);
int sclp_pci_configure(u32 fid);
int sclp_pci_deconfigure(u32 fid);
int sclp_pci_report(struct zpci_report_error_header *report, u32 fh, u32 fid);
int memcpy_hsa_kernel(void *dest, unsigned long src, size_t count);
int memcpy_hsa_user(void __user *dest, unsigned long src, size_t count);
-void sclp_early_detect(void);
-void _sclp_print_early(const char *);
-void __sclp_print_early(const char *s, unsigned int len);
void sclp_ocf_cpc_name_copy(char *dst);
static inline int sclp_get_core_info(struct sclp_core_info *info, int early)
{
if (early)
- return _sclp_get_core_info_early(info);
+ return sclp_early_get_core_info(info);
return _sclp_get_core_info(info);
}
get_cpu_id(&id);
u16_to_hex(type_str, id.machine);
strcat(mach_str, type_str);
- _sclp_print_early(mach_str);
+ sclp_early_printk(mach_str);
}
static void __init u16_to_decimal(char *str, u16 val)
* z/VM adds a four character prefix.
*/
if (strlen(als_str) > 70) {
- _sclp_print_early(als_str);
+ sclp_early_printk(als_str);
*als_str = '\0';
}
u16_to_decimal(val_str, i * BITS_PER_LONG + j);
first = 0;
}
}
- _sclp_print_early(als_str);
- _sclp_print_early("See Principles of Operations for facility bits");
+ sclp_early_printk(als_str);
+ sclp_early_printk("See Principles of Operations for facility bits");
}
static void __init facility_mismatch(void)
{
- _sclp_print_early("The Linux kernel requires more recent processor hardware");
+ sclp_early_printk("The Linux kernel requires more recent processor hardware");
print_machine_type();
print_missing_facilities();
disabled_wait(0x8badcccc);
static void sclp_early_write(struct console *con, const char *s, unsigned int len)
{
- __sclp_print_early(s, len);
+ __sclp_early_printk(s, len);
}
static struct console sclp_early_console = {
{
char str[8] = {0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40};
- sclp_get_ipl_info(&sclp_ipl_info);
+ sclp_early_get_ipl_info(&sclp_ipl_info);
/*
* Fix loadparm: There are systems where the (SCSI) LOADPARM
* returned by read SCP info is invalid (contains EBCDIC blanks)
larl %r15,init_thread_union
ahi %r15,1<<(PAGE_SHIFT+THREAD_SIZE_ORDER)
larl %r2,.Lpanic_string
- larl %r3,_sclp_print_early
+ larl %r3,sclp_early_printk
lghi %r1,0
sam31
sigp %r1,%r0,SIGP_SET_ARCHITECTURE
static int sclp_init_mask(int calculate);
static int sclp_init(void);
-/* Perform service call. Return 0 on success, non-zero otherwise. */
-int
-sclp_service_call(sclp_cmdw_t command, void *sccb)
-{
- int cc = 4; /* Initialize for program check handling */
-
- asm volatile(
- "0: .insn rre,0xb2200000,%1,%2\n" /* servc %1,%2 */
- "1: ipm %0\n"
- " srl %0,28\n"
- "2:\n"
- EX_TABLE(0b, 2b)
- EX_TABLE(1b, 2b)
- : "+&d" (cc) : "d" (command), "a" (__pa(sccb))
- : "cc", "memory");
- if (cc == 4)
- return -EINVAL;
- if (cc == 3)
- return -EIO;
- if (cc == 2)
- return -EBUSY;
- return 0;
-}
-
-
static void
__sclp_queue_read_req(void)
{
int sclp_remove_processed(struct sccb_header *sccb);
int sclp_deactivate(void);
int sclp_reactivate(void);
-int sclp_service_call(sclp_cmdw_t command, void *sccb);
int sclp_sync_request(sclp_cmdw_t command, void *sccb);
int sclp_sync_request_timeout(sclp_cmdw_t command, void *sccb, int timeout);
extern int sclp_console_drop;
extern unsigned long sclp_console_full;
+extern char sclp_early_sccb[PAGE_SIZE];
+
+void sclp_early_wait_irq(void);
+int sclp_early_cmd_sync(sclp_cmdw_t cmd, void *sccb);
+int sclp_early_cmd(sclp_cmdw_t cmd, void *sccb);
+unsigned int sclp_early_con_check_linemode(struct init_sccb *sccb);
+int sclp_early_set_event_mask(struct init_sccb *sccb,
+ unsigned long receive_mask,
+ unsigned long send_mask);
+
/* useful inlines */
+/* Perform service call. Return 0 on success, non-zero otherwise. */
+static inline int sclp_service_call(sclp_cmdw_t command, void *sccb)
+{
+ int cc = 4; /* Initialize for program check handling */
+
+ asm volatile(
+ "0: .insn rre,0xb2200000,%1,%2\n" /* servc %1,%2 */
+ "1: ipm %0\n"
+ " srl %0,28\n"
+ "2:\n"
+ EX_TABLE(0b, 2b)
+ EX_TABLE(1b, 2b)
+ : "+&d" (cc) : "d" (command), "a" ((unsigned long)sccb)
+ : "cc", "memory");
+ if (cc == 4)
+ return -EINVAL;
+ if (cc == 3)
+ return -EIO;
+ if (cc == 2)
+ return -EBUSY;
+ return 0;
+}
+
/* VM uses EBCDIC 037, LPAR+native(SE+HMC) use EBCDIC 500 */
/* translate single character from ASCII to EBCDIC */
static inline unsigned char
u8 _pad_128[4096 - 128]; /* 128-4095 */
} __packed __aligned(PAGE_SIZE);
-static char sccb_early[PAGE_SIZE] __aligned(PAGE_SIZE) __initdata;
static struct sclp_ipl_info sclp_ipl_info;
struct sclp_info sclp;
EXPORT_SYMBOL(sclp);
-static int __init sclp_cmd_sync_early(sclp_cmdw_t cmd, void *sccb)
-{
- int rc;
-
- __ctl_set_bit(0, 9);
- rc = sclp_service_call(cmd, sccb);
- if (rc)
- goto out;
- __load_psw_mask(PSW_DEFAULT_KEY | PSW_MASK_BASE | PSW_MASK_EA |
- PSW_MASK_BA | PSW_MASK_EXT | PSW_MASK_WAIT);
- local_irq_disable();
-out:
- /* Contents of the sccb might have changed. */
- barrier();
- __ctl_clear_bit(0, 9);
- return rc;
-}
-
-static int __init sclp_read_info_early(struct read_info_sccb *sccb)
+static int __init sclp_early_read_info(struct read_info_sccb *sccb)
{
int rc, i;
sclp_cmdw_t commands[] = {SCLP_CMDW_READ_SCP_INFO_FORCED,
sccb->header.length = sizeof(*sccb);
sccb->header.function_code = 0x80;
sccb->header.control_mask[2] = 0x80;
- rc = sclp_cmd_sync_early(commands[i], sccb);
+ rc = sclp_early_cmd_sync(commands[i], sccb);
} while (rc == -EBUSY);
if (rc)
return -EIO;
}
-static void __init sclp_facilities_detect(struct read_info_sccb *sccb)
+static void __init sclp_early_facilities_detect(struct read_info_sccb *sccb)
{
struct sclp_core_entry *cpue;
u16 boot_cpu_address, cpu;
- if (sclp_read_info_early(sccb))
+ if (sclp_early_read_info(sccb))
return;
sclp.facilities = sccb->facilities;
}
/*
- * This function will be called after sclp_facilities_detect(), which gets
- * called from early.c code. The sclp_facilities_detect() function retrieves
+ * This function will be called after sclp_early_facilities_detect(), which gets
+ * called from early.c code. The sclp_early_facilities_detect() function retrieves
* and saves the IPL information.
*/
-void __init sclp_get_ipl_info(struct sclp_ipl_info *info)
+void __init sclp_early_get_ipl_info(struct sclp_ipl_info *info)
{
*info = sclp_ipl_info;
}
-static int __init sclp_cmd_early(sclp_cmdw_t cmd, void *sccb)
-{
- int rc;
+static struct sclp_core_info sclp_early_core_info __initdata;
+static int sclp_early_core_info_valid __initdata;
- do {
- rc = sclp_cmd_sync_early(cmd, sccb);
- } while (rc == -EBUSY);
-
- if (rc)
- return -EIO;
- if (((struct sccb_header *) sccb)->response_code != 0x0020)
- return -EIO;
- return 0;
-}
-
-static void __init sccb_init_eq_size(struct sdias_sccb *sccb)
-{
- memset(sccb, 0, sizeof(*sccb));
-
- sccb->hdr.length = sizeof(*sccb);
- sccb->evbuf.hdr.length = sizeof(struct sdias_evbuf);
- sccb->evbuf.hdr.type = EVTYP_SDIAS;
- sccb->evbuf.event_qual = SDIAS_EQ_SIZE;
- sccb->evbuf.data_id = SDIAS_DI_FCP_DUMP;
- sccb->evbuf.event_id = 4712;
- sccb->evbuf.dbs = 1;
-}
-
-static int __init sclp_set_event_mask(struct init_sccb *sccb,
- unsigned long receive_mask,
- unsigned long send_mask)
-{
- memset(sccb, 0, sizeof(*sccb));
- sccb->header.length = sizeof(*sccb);
- sccb->mask_length = sizeof(sccb_mask_t);
- sccb->receive_mask = receive_mask;
- sccb->send_mask = send_mask;
- return sclp_cmd_early(SCLP_CMDW_WRITE_EVENT_MASK, sccb);
-}
-
-static struct sclp_core_info sclp_core_info_early __initdata;
-static int sclp_core_info_early_valid __initdata;
-
-static void __init sclp_init_core_info_early(struct read_cpu_info_sccb *sccb)
+static void __init sclp_early_init_core_info(struct read_cpu_info_sccb *sccb)
{
int rc;
memset(sccb, 0, sizeof(*sccb));
sccb->header.length = sizeof(*sccb);
do {
- rc = sclp_cmd_sync_early(SCLP_CMDW_READ_CPU_INFO, sccb);
+ rc = sclp_early_cmd_sync(SCLP_CMDW_READ_CPU_INFO, sccb);
} while (rc == -EBUSY);
if (rc)
return;
if (sccb->header.response_code != 0x0010)
return;
- sclp_fill_core_info(&sclp_core_info_early, sccb);
- sclp_core_info_early_valid = 1;
+ sclp_fill_core_info(&sclp_early_core_info, sccb);
+ sclp_early_core_info_valid = 1;
}
-int __init _sclp_get_core_info_early(struct sclp_core_info *info)
+int __init sclp_early_get_core_info(struct sclp_core_info *info)
{
- if (!sclp_core_info_early_valid)
+ if (!sclp_early_core_info_valid)
return -EIO;
- *info = sclp_core_info_early;
+ *info = sclp_early_core_info;
return 0;
}
-static long __init sclp_hsa_size_init(struct sdias_sccb *sccb)
+static long __init sclp_early_hsa_size_init(struct sdias_sccb *sccb)
{
- sccb_init_eq_size(sccb);
- if (sclp_cmd_early(SCLP_CMDW_WRITE_EVENT_DATA, sccb))
+ memset(sccb, 0, sizeof(*sccb));
+ sccb->hdr.length = sizeof(*sccb);
+ sccb->evbuf.hdr.length = sizeof(struct sdias_evbuf);
+ sccb->evbuf.hdr.type = EVTYP_SDIAS;
+ sccb->evbuf.event_qual = SDIAS_EQ_SIZE;
+ sccb->evbuf.data_id = SDIAS_DI_FCP_DUMP;
+ sccb->evbuf.event_id = 4712;
+ sccb->evbuf.dbs = 1;
+ if (sclp_early_cmd(SCLP_CMDW_WRITE_EVENT_DATA, sccb))
return -EIO;
if (sccb->evbuf.blk_cnt == 0)
return 0;
return (sccb->evbuf.blk_cnt - 1) * PAGE_SIZE;
}
-static long __init sclp_hsa_copy_wait(struct sccb_header *sccb)
+static long __init sclp_early_hsa_copy_wait(struct sdias_sccb *sccb)
{
memset(sccb, 0, PAGE_SIZE);
- sccb->length = PAGE_SIZE;
- if (sclp_cmd_early(SCLP_CMDW_READ_EVENT_DATA, sccb))
+ sccb->hdr.length = PAGE_SIZE;
+ if (sclp_early_cmd(SCLP_CMDW_READ_EVENT_DATA, sccb))
return -EIO;
- if (((struct sdias_sccb *) sccb)->evbuf.blk_cnt == 0)
+ if (sccb->evbuf.blk_cnt == 0)
return 0;
- return (((struct sdias_sccb *) sccb)->evbuf.blk_cnt - 1) * PAGE_SIZE;
+ return (sccb->evbuf.blk_cnt - 1) * PAGE_SIZE;
}
-static void __init sclp_hsa_size_detect(void *sccb)
+static void __init sclp_early_hsa_size_detect(void *sccb)
{
- long size;
+ unsigned long flags;
+ long size = -EIO;
- /* First try synchronous interface (LPAR) */
- if (sclp_set_event_mask(sccb, 0, 0x40000010))
- return;
- size = sclp_hsa_size_init(sccb);
- if (size < 0)
- return;
- if (size != 0)
+ raw_local_irq_save(flags);
+ if (sclp_early_set_event_mask(sccb, EVTYP_SDIAS_MASK, EVTYP_SDIAS_MASK))
goto out;
- /* Then try asynchronous interface (z/VM) */
- if (sclp_set_event_mask(sccb, 0x00000010, 0x40000010))
- return;
- size = sclp_hsa_size_init(sccb);
- if (size < 0)
- return;
- size = sclp_hsa_copy_wait(sccb);
- if (size < 0)
- return;
+ size = sclp_early_hsa_size_init(sccb);
+ /* First check for synchronous response (LPAR) */
+ if (size)
+ goto out_mask;
+ if (!(S390_lowcore.ext_params & 1))
+ sclp_early_wait_irq();
+ size = sclp_early_hsa_copy_wait(sccb);
+out_mask:
+ sclp_early_set_event_mask(sccb, 0, 0);
out:
- sclp.hsa_size = size;
-}
-
-static unsigned int __init sclp_con_check_linemode(struct init_sccb *sccb)
-{
- if (!(sccb->sclp_send_mask & EVTYP_OPCMD_MASK))
- return 0;
- if (!(sccb->sclp_receive_mask & (EVTYP_MSG_MASK | EVTYP_PMSGCMD_MASK)))
- return 0;
- return 1;
+ raw_local_irq_restore(flags);
+ if (size > 0)
+ sclp.hsa_size = size;
}
-static void __init sclp_console_detect(struct init_sccb *sccb)
+static void __init sclp_early_console_detect(struct init_sccb *sccb)
{
if (sccb->header.response_code != 0x20)
return;
if (sccb->sclp_send_mask & EVTYP_VT220MSG_MASK)
sclp.has_vt220 = 1;
- if (sclp_con_check_linemode(sccb))
+ if (sclp_early_con_check_linemode(sccb))
sclp.has_linemode = 1;
}
void __init sclp_early_detect(void)
{
- void *sccb = &sccb_early;
+ void *sccb = &sclp_early_sccb;
- sclp_facilities_detect(sccb);
- sclp_init_core_info_early(sccb);
- sclp_hsa_size_detect(sccb);
+ sclp_early_facilities_detect(sccb);
+ sclp_early_init_core_info(sccb);
+ sclp_early_hsa_size_detect(sccb);
- /* Turn off SCLP event notifications. Also save remote masks in the
+ /*
+ * Turn off SCLP event notifications. Also save remote masks in the
* sccb. These are sufficient to detect sclp console capabilities.
*/
- sclp_set_event_mask(sccb, 0, 0);
- sclp_console_detect(sccb);
+ sclp_early_set_event_mask(sccb, 0, 0);
+ sclp_early_console_detect(sccb);
}
* Copyright IBM Corp. 2015
* Author(s): Martin Schwidefsky <schwidefsky@de.ibm.com>
*/
+
#include <linux/kernel.h>
+#include <asm/processor.h>
+#include <asm/lowcore.h>
#include <asm/ebcdic.h>
#include <asm/irq.h>
-#include <asm/lowcore.h>
-#include <asm/processor.h>
-#include <asm/sclp.h>
-
-#define EVTYP_VT220MSG_MASK 0x00000040
-#define EVTYP_MSG_MASK 0x40000000
-
-static char _sclp_work_area[4096] __aligned(PAGE_SIZE) __section(data);
-static bool have_vt220 __section(data);
-static bool have_linemode __section(data);
+#include "sclp.h"
+#include "sclp_rw.h"
+char sclp_early_sccb[PAGE_SIZE] __aligned(PAGE_SIZE) __section(data);
int sclp_init_state __section(data) = sclp_init_state_uninitialized;
-static void _sclp_wait_int(void)
+void sclp_early_wait_irq(void)
{
- unsigned long psw_mask, addr, flags;
+ unsigned long psw_mask, addr;
psw_t psw_ext_save, psw_wait;
union ctlreg0 cr0, cr0_new;
- raw_local_irq_save(flags);
__ctl_store(cr0.val, 0, 0);
cr0_new.val = cr0.val & ~CR0_IRQ_SUBCLASS_MASK;
cr0_new.lap = 0;
S390_lowcore.external_new_psw = psw_ext_save;
__ctl_load(cr0.val, 0, 0);
- raw_local_irq_restore(flags);
}
-static int _sclp_servc(unsigned int cmd, char *sccb)
+int sclp_early_cmd_sync(sclp_cmdw_t cmd, void *sccb)
{
- unsigned int cc;
+ unsigned long flags;
+ int rc;
- do {
- asm volatile(
- " .insn rre,0xb2200000,%1,%2\n"
- " ipm %0\n"
- : "=d" (cc) : "d" (cmd), "a" (sccb)
- : "cc", "memory");
- cc >>= 28;
- if (cc == 3)
- return -EINVAL;
- _sclp_wait_int();
- } while (cc != 0);
- return (*(unsigned short *)(sccb + 6) == 0x20) ? 0 : -EIO;
+ raw_local_irq_save(flags);
+ rc = sclp_service_call(cmd, sccb);
+ if (rc)
+ goto out;
+ sclp_early_wait_irq();
+out:
+ raw_local_irq_restore(flags);
+ return rc;
}
-static int _sclp_setup(int disable)
+int sclp_early_cmd(sclp_cmdw_t cmd, void *sccb)
{
- static unsigned char init_sccb[] = {
- 0x00, 0x1c,
- 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
- 0x00, 0x04,
- 0x80, 0x00, 0x00, 0x00, 0x40, 0x00, 0x00, 0x40,
- 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
- };
- unsigned int *masks;
int rc;
- memcpy(_sclp_work_area, init_sccb, 28);
- masks = (unsigned int *)(_sclp_work_area + 12);
- if (disable)
- memset(masks, 0, 16);
- /* SCLP write mask */
- rc = _sclp_servc(0x00780005, _sclp_work_area);
+ do {
+ rc = sclp_early_cmd_sync(cmd, sccb);
+ } while (rc == -EBUSY);
if (rc)
- return rc;
- have_vt220 = masks[2] & EVTYP_VT220MSG_MASK;
- have_linemode = masks[2] & EVTYP_MSG_MASK;
+ return -EIO;
+ if (((struct sccb_header *) sccb)->response_code != 0x0020)
+ return -EIO;
return 0;
}
+struct write_sccb {
+ struct sccb_header header;
+ struct msg_buf msg;
+} __packed;
+
/* Output multi-line text using SCLP Message interface. */
-static void _sclp_print_lm(const char *str, unsigned int len)
+static void sclp_early_print_lm(const char *str, unsigned int len)
{
- static unsigned char write_head[] = {
- /* sccb header */
- 0x00, 0x52, /* 0 */
- 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 2 */
- /* evbuf */
- 0x00, 0x4a, /* 8 */
- 0x02, 0x00, 0x00, 0x00, /* 10 */
- /* mdb */
- 0x00, 0x44, /* 14 */
- 0x00, 0x01, /* 16 */
- 0xd4, 0xc4, 0xc2, 0x40, /* 18 */
- 0x00, 0x00, 0x00, 0x01, /* 22 */
- /* go */
- 0x00, 0x38, /* 26 */
- 0x00, 0x01, /* 28 */
- 0x00, 0x00, 0x00, 0x00, /* 30 */
- 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 34 */
- 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 42 */
- 0x00, 0x00, 0x00, 0x00, /* 50 */
- 0x00, 0x00, /* 54 */
- 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 56 */
- 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 64 */
- 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 72 */
- 0x00, 0x00, /* 80 */
- };
- static unsigned char write_mto[] = {
- /* mto */
- 0x00, 0x0a, /* 0 */
- 0x00, 0x04, /* 2 */
- 0x10, 0x00, /* 4 */
- 0x00, 0x00, 0x00, 0x00 /* 6 */
- };
- unsigned char *ptr, *end_ptr, ch;
- unsigned int count, num;
-
- num = 0;
- memcpy(_sclp_work_area, write_head, sizeof(write_head));
- ptr = _sclp_work_area + sizeof(write_head);
- end_ptr = _sclp_work_area + sizeof(_sclp_work_area) - 1;
+ unsigned char *ptr, *end, ch;
+ unsigned int count, offset;
+ struct write_sccb *sccb;
+ struct msg_buf *msg;
+ struct mdb *mdb;
+ struct mto *mto;
+ struct go *go;
+
+ sccb = (struct write_sccb *) &sclp_early_sccb;
+ end = (unsigned char *) sccb + sizeof(sclp_early_sccb) - 1;
+ memset(sccb, 0, sizeof(*sccb));
+ ptr = (unsigned char *) &sccb->msg.mdb.mto;
+ offset = 0;
do {
- if (ptr + sizeof(write_mto) > end_ptr)
- break;
- memcpy(ptr, write_mto, sizeof(write_mto));
- for (count = sizeof(write_mto); num < len; count++) {
- num++;
- ch = *str++;
- if (ch == 0x0a)
- break;
- if (ptr > end_ptr)
+ for (count = sizeof(*mto); offset < len; count++) {
+ ch = str[offset++];
+ if ((ch == 0x0a) || (ptr + count > end))
break;
ptr[count] = _ascebc[ch];
}
- /* Update length fields in mto, mdb, evbuf and sccb */
- *(unsigned short *) ptr = count;
- *(unsigned short *)(_sclp_work_area + 14) += count;
- *(unsigned short *)(_sclp_work_area + 8) += count;
- *(unsigned short *)(_sclp_work_area + 0) += count;
+ mto = (struct mto *) ptr;
+ memset(mto, 0, sizeof(*mto));
+ mto->length = count;
+ mto->type = 4;
+ mto->line_type_flags = LNTPFLGS_ENDTEXT;
ptr += count;
- } while (num < len);
-
- /* SCLP write data */
- _sclp_servc(0x00760005, _sclp_work_area);
+ } while ((offset < len) && (ptr + sizeof(*mto) <= end));
+ len = ptr - (unsigned char *) sccb;
+ sccb->header.length = len - offsetof(struct write_sccb, header);
+ msg = &sccb->msg;
+ msg->header.type = EVTYP_MSG;
+ msg->header.length = len - offsetof(struct write_sccb, msg.header);
+ mdb = &msg->mdb;
+ mdb->header.type = 1;
+ mdb->header.tag = 0xD4C4C240;
+ mdb->header.revision_code = 1;
+ mdb->header.length = len - offsetof(struct write_sccb, msg.mdb.header);
+ go = &mdb->go;
+ go->length = sizeof(*go);
+ go->type = 1;
+ sclp_early_cmd(SCLP_CMDW_WRITE_EVENT_DATA, sccb);
}
+struct vt220_sccb {
+ struct sccb_header header;
+ struct {
+ struct evbuf_header header;
+ char data[];
+ } msg;
+} __packed;
+
/* Output multi-line text (plus a newline) using SCLP VT220
* interface.
*/
-static void _sclp_print_vt220(const char *str, unsigned int len)
+static void sclp_early_print_vt220(const char *str, unsigned int len)
+{
+ struct vt220_sccb *sccb;
+
+ sccb = (struct vt220_sccb *) &sclp_early_sccb;
+ if (sizeof(*sccb) + len >= sizeof(sclp_early_sccb))
+ len = sizeof(sclp_early_sccb) - sizeof(*sccb) - 1;
+ memset(sccb, 0, sizeof(*sccb));
+ memcpy(&sccb->msg.data, str, len);
+ sccb->msg.data[len] = '\n';
+ sccb->header.length = sizeof(*sccb) + len + 1;
+ sccb->msg.header.length = sizeof(sccb->msg) + len + 1;
+ sccb->msg.header.type = EVTYP_VT220MSG;
+ sclp_early_cmd(SCLP_CMDW_WRITE_EVENT_DATA, sccb);
+}
+
+int sclp_early_set_event_mask(struct init_sccb *sccb,
+ unsigned long receive_mask,
+ unsigned long send_mask)
+{
+ memset(sccb, 0, sizeof(*sccb));
+ sccb->header.length = sizeof(*sccb);
+ sccb->mask_length = sizeof(sccb_mask_t);
+ sccb->receive_mask = receive_mask;
+ sccb->send_mask = send_mask;
+ return sclp_early_cmd(SCLP_CMDW_WRITE_EVENT_MASK, sccb);
+}
+
+unsigned int sclp_early_con_check_linemode(struct init_sccb *sccb)
{
- static unsigned char const write_head[] = {
- /* sccb header */
- 0x00, 0x0e,
- 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
- /* evbuf header */
- 0x00, 0x06,
- 0x1a, 0x00, 0x00, 0x00,
- };
-
- if (sizeof(write_head) + len >= sizeof(_sclp_work_area))
- len = sizeof(_sclp_work_area) - sizeof(write_head) - 1;
-
- memcpy(_sclp_work_area, write_head, sizeof(write_head));
- memcpy(_sclp_work_area + sizeof(write_head), str, len);
- _sclp_work_area[sizeof(write_head) + len] = '\n';
-
- /* Update length fields in evbuf and sccb headers */
- *(unsigned short *)(_sclp_work_area + 8) += len + 1;
- *(unsigned short *)(_sclp_work_area + 0) += len + 1;
-
- /* SCLP write data */
- (void)_sclp_servc(0x00760005, _sclp_work_area);
+ if (!(sccb->sclp_send_mask & EVTYP_OPCMD_MASK))
+ return 0;
+ if (!(sccb->sclp_receive_mask & (EVTYP_MSG_MASK | EVTYP_PMSGCMD_MASK)))
+ return 0;
+ return 1;
+}
+
+static int sclp_early_setup(int disable, int *have_linemode, int *have_vt220)
+{
+ unsigned long receive_mask, send_mask;
+ struct init_sccb *sccb;
+ int rc;
+
+ *have_linemode = *have_vt220 = 0;
+ sccb = (struct init_sccb *) &sclp_early_sccb;
+ receive_mask = disable ? 0 : EVTYP_OPCMD_MASK;
+ send_mask = disable ? 0 : EVTYP_VT220MSG_MASK | EVTYP_MSG_MASK;
+ rc = sclp_early_set_event_mask(sccb, receive_mask, send_mask);
+ if (rc)
+ return rc;
+ *have_linemode = sclp_early_con_check_linemode(sccb);
+ *have_vt220 = sccb->send_mask & EVTYP_VT220MSG_MASK;
+ return rc;
}
/* Output one or more lines of text on the SCLP console (VT220 and /
* or line-mode). All lines get terminated; no need for a trailing LF.
*/
-void __sclp_print_early(const char *str, unsigned int len)
+void __sclp_early_printk(const char *str, unsigned int len)
{
+ int have_linemode, have_vt220;
+
if (sclp_init_state != sclp_init_state_uninitialized)
return;
- if (_sclp_setup(0) != 0)
+ if (sclp_early_setup(0, &have_linemode, &have_vt220) != 0)
return;
if (have_linemode)
- _sclp_print_lm(str, len);
+ sclp_early_print_lm(str, len);
if (have_vt220)
- _sclp_print_vt220(str, len);
- _sclp_setup(1);
+ sclp_early_print_vt220(str, len);
+ sclp_early_setup(1, &have_linemode, &have_vt220);
}
-void _sclp_print_early(const char *str)
+void sclp_early_printk(const char *str)
{
- __sclp_print_early(str, strlen(str));
+ __sclp_early_printk(str, strlen(str));
}
projects / karo-tx-linux.git / commitdiff