-/* $Id: chmc.c,v 1.4 2002/01/08 16:00:14 davem Exp $
- * memctrlr.c: Driver for UltraSPARC-III memory controller.
+/* chmc.c: Driver for UltraSPARC-III memory controller.
*
- * Copyright (C) 2001 David S. Miller (davem@redhat.com)
+ * Copyright (C) 2001, 2007, 2008 David S. Miller (davem@davemloft.net)
*/
#include <linux/module.h>
#include <linux/smp.h>
#include <linux/errno.h>
#include <linux/init.h>
+#include <linux/of.h>
+#include <linux/of_device.h>
#include <asm/spitfire.h>
#include <asm/chmctrl.h>
+#include <asm/cpudata.h>
#include <asm/oplib.h>
#include <asm/prom.h>
+#include <asm/head.h>
#include <asm/io.h>
+#include <asm/memctrl.h>
+
+#define DRV_MODULE_NAME "chmc"
+#define PFX DRV_MODULE_NAME ": "
+#define DRV_MODULE_VERSION "0.2"
+
+MODULE_AUTHOR("David S. Miller (davem@davemloft.net)");
+MODULE_DESCRIPTION("UltraSPARC-III memory controller driver");
+MODULE_LICENSE("GPL");
+MODULE_VERSION(DRV_MODULE_VERSION);
+
+static int mc_type;
+#define MC_TYPE_SAFARI 1
+#define MC_TYPE_JBUS 2
+
+static dimm_printer_t us3mc_dimm_printer;
#define CHMCTRL_NDGRPS 2
#define CHMCTRL_NDIMMS 4
-#define DIMMS_PER_MC (CHMCTRL_NDGRPS * CHMCTRL_NDIMMS)
+#define CHMC_DIMMS_PER_MC (CHMCTRL_NDGRPS * CHMCTRL_NDIMMS)
/* OBP memory-layout property format. */
-struct obp_map {
+struct chmc_obp_map {
unsigned char dimm_map[144];
unsigned char pin_map[576];
};
#define DIMM_LABEL_SZ 8
-struct obp_mem_layout {
+struct chmc_obp_mem_layout {
/* One max 8-byte string label per DIMM. Usually
* this matches the label on the motherboard where
* that DIMM resides.
*/
- char dimm_labels[DIMMS_PER_MC][DIMM_LABEL_SZ];
+ char dimm_labels[CHMC_DIMMS_PER_MC][DIMM_LABEL_SZ];
/* If symmetric use map[0], else it is
* asymmetric and map[1] should be used.
*/
- char symmetric;
+ char symmetric;
- struct obp_map map[2];
+ struct chmc_obp_map map[2];
};
#define CHMCTRL_NBANKS 4
-struct bank_info {
- struct mctrl_info *mp;
+struct chmc_bank_info {
+ struct chmc *p;
int bank_id;
u64 raw_reg;
unsigned long size;
};
-struct mctrl_info {
- struct list_head list;
- int portid;
+struct chmc {
+ struct list_head list;
+ int portid;
+
+ struct chmc_obp_mem_layout layout_prop;
+ int layout_size;
+
+ void __iomem *regs;
- struct obp_mem_layout layout_prop;
- int layout_size;
+ u64 timing_control1;
+ u64 timing_control2;
+ u64 timing_control3;
+ u64 timing_control4;
+ u64 memaddr_control;
- void __iomem *regs;
+ struct chmc_bank_info logical_banks[CHMCTRL_NBANKS];
+};
+
+#define JBUSMC_REGS_SIZE 8
+
+#define JB_MC_REG1_DIMM2_BANK3 0x8000000000000000UL
+#define JB_MC_REG1_DIMM1_BANK1 0x4000000000000000UL
+#define JB_MC_REG1_DIMM2_BANK2 0x2000000000000000UL
+#define JB_MC_REG1_DIMM1_BANK0 0x1000000000000000UL
+#define JB_MC_REG1_XOR 0x0000010000000000UL
+#define JB_MC_REG1_ADDR_GEN_2 0x000000e000000000UL
+#define JB_MC_REG1_ADDR_GEN_2_SHIFT 37
+#define JB_MC_REG1_ADDR_GEN_1 0x0000001c00000000UL
+#define JB_MC_REG1_ADDR_GEN_1_SHIFT 34
+#define JB_MC_REG1_INTERLEAVE 0x0000000001800000UL
+#define JB_MC_REG1_INTERLEAVE_SHIFT 23
+#define JB_MC_REG1_DIMM2_PTYPE 0x0000000000200000UL
+#define JB_MC_REG1_DIMM2_PTYPE_SHIFT 21
+#define JB_MC_REG1_DIMM1_PTYPE 0x0000000000100000UL
+#define JB_MC_REG1_DIMM1_PTYPE_SHIFT 20
+
+#define PART_TYPE_X8 0
+#define PART_TYPE_X4 1
+
+#define INTERLEAVE_NONE 0
+#define INTERLEAVE_SAME 1
+#define INTERLEAVE_INTERNAL 2
+#define INTERLEAVE_BOTH 3
+
+#define ADDR_GEN_128MB 0
+#define ADDR_GEN_256MB 1
+#define ADDR_GEN_512MB 2
+#define ADDR_GEN_1GB 3
+
+#define JB_NUM_DIMM_GROUPS 2
+#define JB_NUM_DIMMS_PER_GROUP 2
+#define JB_NUM_DIMMS (JB_NUM_DIMM_GROUPS * JB_NUM_DIMMS_PER_GROUP)
+
+struct jbusmc_obp_map {
+ unsigned char dimm_map[18];
+ unsigned char pin_map[144];
+};
+
+struct jbusmc_obp_mem_layout {
+ /* One max 8-byte string label per DIMM. Usually
+ * this matches the label on the motherboard where
+ * that DIMM resides.
+ */
+ char dimm_labels[JB_NUM_DIMMS][DIMM_LABEL_SZ];
+
+ /* If symmetric use map[0], else it is
+ * asymmetric and map[1] should be used.
+ */
+ char symmetric;
+
+ struct jbusmc_obp_map map;
+
+ char _pad;
+};
- u64 timing_control1;
- u64 timing_control2;
- u64 timing_control3;
- u64 timing_control4;
- u64 memaddr_control;
+struct jbusmc_dimm_group {
+ struct jbusmc *controller;
+ int index;
+ u64 base_addr;
+ u64 size;
+};
- struct bank_info logical_banks[CHMCTRL_NBANKS];
+struct jbusmc {
+ void __iomem *regs;
+ u64 mc_reg_1;
+ u32 portid;
+ struct jbusmc_obp_mem_layout layout;
+ int layout_len;
+ int num_dimm_groups;
+ struct jbusmc_dimm_group dimm_groups[JB_NUM_DIMM_GROUPS];
+ struct list_head list;
};
+static DEFINE_SPINLOCK(mctrl_list_lock);
static LIST_HEAD(mctrl_list);
+static void mc_list_add(struct list_head *list)
+{
+ spin_lock(&mctrl_list_lock);
+ list_add(list, &mctrl_list);
+ spin_unlock(&mctrl_list_lock);
+}
+
+static void mc_list_del(struct list_head *list)
+{
+ spin_lock(&mctrl_list_lock);
+ list_del_init(list);
+ spin_unlock(&mctrl_list_lock);
+}
+
+#define SYNDROME_MIN -1
+#define SYNDROME_MAX 144
+
+/* Covert syndrome code into the way the bits are positioned
+ * on the bus.
+ */
+static int syndrome_to_qword_code(int syndrome_code)
+{
+ if (syndrome_code < 128)
+ syndrome_code += 16;
+ else if (syndrome_code < 128 + 9)
+ syndrome_code -= (128 - 7);
+ else if (syndrome_code < (128 + 9 + 3))
+ syndrome_code -= (128 + 9 - 4);
+ else
+ syndrome_code -= (128 + 9 + 3);
+ return syndrome_code;
+}
+
+/* All this magic has to do with how a cache line comes over the wire
+ * on Safari and JBUS. A 64-bit line comes over in 1 or more quadword
+ * cycles, each of which transmit ECC/MTAG info as well as the actual
+ * data.
+ */
+#define L2_LINE_SIZE 64
+#define L2_LINE_ADDR_MSK (L2_LINE_SIZE - 1)
+#define QW_PER_LINE 4
+#define QW_BYTES (L2_LINE_SIZE / QW_PER_LINE)
+#define QW_BITS 144
+#define SAFARI_LAST_BIT (576 - 1)
+#define JBUS_LAST_BIT (144 - 1)
+
+static void get_pin_and_dimm_str(int syndrome_code, unsigned long paddr,
+ int *pin_p, char **dimm_str_p, void *_prop,
+ int base_dimm_offset)
+{
+ int qword_code = syndrome_to_qword_code(syndrome_code);
+ int cache_line_offset;
+ int offset_inverse;
+ int dimm_map_index;
+ int map_val;
+
+ if (mc_type == MC_TYPE_JBUS) {
+ struct jbusmc_obp_mem_layout *p = _prop;
+
+ /* JBUS */
+ cache_line_offset = qword_code;
+ offset_inverse = (JBUS_LAST_BIT - cache_line_offset);
+ dimm_map_index = offset_inverse / 8;
+ map_val = p->map.dimm_map[dimm_map_index];
+ map_val = ((map_val >> ((7 - (offset_inverse & 7)))) & 1);
+ *dimm_str_p = p->dimm_labels[base_dimm_offset + map_val];
+ *pin_p = p->map.pin_map[cache_line_offset];
+ } else {
+ struct chmc_obp_mem_layout *p = _prop;
+ struct chmc_obp_map *mp;
+ int qword;
+
+ /* Safari */
+ if (p->symmetric)
+ mp = &p->map[0];
+ else
+ mp = &p->map[1];
+
+ qword = (paddr & L2_LINE_ADDR_MSK) / QW_BYTES;
+ cache_line_offset = ((3 - qword) * QW_BITS) + qword_code;
+ offset_inverse = (SAFARI_LAST_BIT - cache_line_offset);
+ dimm_map_index = offset_inverse >> 2;
+ map_val = mp->dimm_map[dimm_map_index];
+ map_val = ((map_val >> ((3 - (offset_inverse & 3)) << 1)) & 0x3);
+ *dimm_str_p = p->dimm_labels[base_dimm_offset + map_val];
+ *pin_p = mp->pin_map[cache_line_offset];
+ }
+}
+
+static struct jbusmc_dimm_group *jbusmc_find_dimm_group(unsigned long phys_addr)
+{
+ struct jbusmc *p;
+
+ list_for_each_entry(p, &mctrl_list, list) {
+ int i;
+
+ for (i = 0; i < p->num_dimm_groups; i++) {
+ struct jbusmc_dimm_group *dp = &p->dimm_groups[i];
+
+ if (phys_addr < dp->base_addr ||
+ (dp->base_addr + dp->size) <= phys_addr)
+ continue;
+
+ return dp;
+ }
+ }
+ return NULL;
+}
+
+static int jbusmc_print_dimm(int syndrome_code,
+ unsigned long phys_addr,
+ char *buf, int buflen)
+{
+ struct jbusmc_obp_mem_layout *prop;
+ struct jbusmc_dimm_group *dp;
+ struct jbusmc *p;
+ int first_dimm;
+
+ dp = jbusmc_find_dimm_group(phys_addr);
+ if (dp == NULL ||
+ syndrome_code < SYNDROME_MIN ||
+ syndrome_code > SYNDROME_MAX) {
+ buf[0] = '?';
+ buf[1] = '?';
+ buf[2] = '?';
+ buf[3] = '\0';
+ }
+ p = dp->controller;
+ prop = &p->layout;
+
+ first_dimm = dp->index * JB_NUM_DIMMS_PER_GROUP;
+
+ if (syndrome_code != SYNDROME_MIN) {
+ char *dimm_str;
+ int pin;
+
+ get_pin_and_dimm_str(syndrome_code, phys_addr, &pin,
+ &dimm_str, prop, first_dimm);
+ sprintf(buf, "%s, pin %3d", dimm_str, pin);
+ } else {
+ int dimm;
+
+ /* Multi-bit error, we just dump out all the
+ * dimm labels associated with this dimm group.
+ */
+ for (dimm = 0; dimm < JB_NUM_DIMMS_PER_GROUP; dimm++) {
+ sprintf(buf, "%s ",
+ prop->dimm_labels[first_dimm + dimm]);
+ buf += strlen(buf);
+ }
+ }
+
+ return 0;
+}
+
+static u64 __devinit jbusmc_dimm_group_size(u64 base,
+ const struct linux_prom64_registers *mem_regs,
+ int num_mem_regs)
+{
+ u64 max = base + (8UL * 1024 * 1024 * 1024);
+ u64 max_seen = base;
+ int i;
+
+ for (i = 0; i < num_mem_regs; i++) {
+ const struct linux_prom64_registers *ent;
+ u64 this_base;
+ u64 this_end;
+
+ ent = &mem_regs[i];
+ this_base = ent->phys_addr;
+ this_end = this_base + ent->reg_size;
+ if (base < this_base || base >= this_end)
+ continue;
+ if (this_end > max)
+ this_end = max;
+ if (this_end > max_seen)
+ max_seen = this_end;
+ }
+
+ return max_seen - base;
+}
+
+static void __devinit jbusmc_construct_one_dimm_group(struct jbusmc *p,
+ unsigned long index,
+ const struct linux_prom64_registers *mem_regs,
+ int num_mem_regs)
+{
+ struct jbusmc_dimm_group *dp = &p->dimm_groups[index];
+
+ dp->controller = p;
+ dp->index = index;
+
+ dp->base_addr = (p->portid * (64UL * 1024 * 1024 * 1024));
+ dp->base_addr += (index * (8UL * 1024 * 1024 * 1024));
+ dp->size = jbusmc_dimm_group_size(dp->base_addr, mem_regs, num_mem_regs);
+}
+
+static void __devinit jbusmc_construct_dimm_groups(struct jbusmc *p,
+ const struct linux_prom64_registers *mem_regs,
+ int num_mem_regs)
+{
+ if (p->mc_reg_1 & JB_MC_REG1_DIMM1_BANK0) {
+ jbusmc_construct_one_dimm_group(p, 0, mem_regs, num_mem_regs);
+ p->num_dimm_groups++;
+ }
+ if (p->mc_reg_1 & JB_MC_REG1_DIMM2_BANK2) {
+ jbusmc_construct_one_dimm_group(p, 1, mem_regs, num_mem_regs);
+ p->num_dimm_groups++;
+ }
+}
+
+static int __devinit jbusmc_probe(struct of_device *op,
+ const struct of_device_id *match)
+{
+ const struct linux_prom64_registers *mem_regs;
+ struct device_node *mem_node;
+ int err, len, num_mem_regs;
+ struct jbusmc *p;
+ const u32 *prop;
+ const void *ml;
+
+ err = -ENODEV;
+ mem_node = of_find_node_by_path("/memory");
+ if (!mem_node) {
+ printk(KERN_ERR PFX "Cannot find /memory node.\n");
+ goto out;
+ }
+ mem_regs = of_get_property(mem_node, "reg", &len);
+ if (!mem_regs) {
+ printk(KERN_ERR PFX "Cannot get reg property of /memory node.\n");
+ goto out;
+ }
+ num_mem_regs = len / sizeof(*mem_regs);
+
+ err = -ENOMEM;
+ p = kzalloc(sizeof(*p), GFP_KERNEL);
+ if (!p) {
+ printk(KERN_ERR PFX "Cannot allocate struct jbusmc.\n");
+ goto out;
+ }
+
+ INIT_LIST_HEAD(&p->list);
+
+ err = -ENODEV;
+ prop = of_get_property(op->node, "portid", &len);
+ if (!prop || len != 4) {
+ printk(KERN_ERR PFX "Cannot find portid.\n");
+ goto out_free;
+ }
+
+ p->portid = *prop;
+
+ prop = of_get_property(op->node, "memory-control-register-1", &len);
+ if (!prop || len != 8) {
+ printk(KERN_ERR PFX "Cannot get memory control register 1.\n");
+ goto out_free;
+ }
+
+ p->mc_reg_1 = ((u64)prop[0] << 32) | (u64) prop[1];
+
+ err = -ENOMEM;
+ p->regs = of_ioremap(&op->resource[0], 0, JBUSMC_REGS_SIZE, "jbusmc");
+ if (!p->regs) {
+ printk(KERN_ERR PFX "Cannot map jbusmc regs.\n");
+ goto out_free;
+ }
+
+ err = -ENODEV;
+ ml = of_get_property(op->node, "memory-layout", &p->layout_len);
+ if (!ml) {
+ printk(KERN_ERR PFX "Cannot get memory layout property.\n");
+ goto out_iounmap;
+ }
+ if (p->layout_len > sizeof(p->layout)) {
+ printk(KERN_ERR PFX "Unexpected memory-layout size %d\n",
+ p->layout_len);
+ goto out_iounmap;
+ }
+ memcpy(&p->layout, ml, p->layout_len);
+
+ jbusmc_construct_dimm_groups(p, mem_regs, num_mem_regs);
+
+ mc_list_add(&p->list);
+
+ printk(KERN_INFO PFX "UltraSPARC-IIIi memory controller at %s\n",
+ op->node->full_name);
+
+ dev_set_drvdata(&op->dev, p);
+
+ err = 0;
+
+out:
+ return err;
+
+out_iounmap:
+ of_iounmap(&op->resource[0], p->regs, JBUSMC_REGS_SIZE);
+
+out_free:
+ kfree(p);
+ goto out;
+}
+
/* Does BANK decode PHYS_ADDR? */
-static int bank_match(struct bank_info *bp, unsigned long phys_addr)
+static int chmc_bank_match(struct chmc_bank_info *bp, unsigned long phys_addr)
{
unsigned long upper_bits = (phys_addr & PA_UPPER_BITS) >> PA_UPPER_BITS_SHIFT;
unsigned long lower_bits = (phys_addr & PA_LOWER_BITS) >> PA_LOWER_BITS_SHIFT;
}
/* Given PHYS_ADDR, search memory controller banks for a match. */
-static struct bank_info *find_bank(unsigned long phys_addr)
+static struct chmc_bank_info *chmc_find_bank(unsigned long phys_addr)
{
- struct list_head *mctrl_head = &mctrl_list;
- struct list_head *mctrl_entry = mctrl_head->next;
+ struct chmc *p;
- for (;;) {
- struct mctrl_info *mp =
- list_entry(mctrl_entry, struct mctrl_info, list);
+ list_for_each_entry(p, &mctrl_list, list) {
int bank_no;
- if (mctrl_entry == mctrl_head)
- break;
- mctrl_entry = mctrl_entry->next;
-
for (bank_no = 0; bank_no < CHMCTRL_NBANKS; bank_no++) {
- struct bank_info *bp;
+ struct chmc_bank_info *bp;
- bp = &mp->logical_banks[bank_no];
- if (bank_match(bp, phys_addr))
+ bp = &p->logical_banks[bank_no];
+ if (chmc_bank_match(bp, phys_addr))
return bp;
}
}
}
/* This is the main purpose of this driver. */
-#define SYNDROME_MIN -1
-#define SYNDROME_MAX 144
-int chmc_getunumber(int syndrome_code,
- unsigned long phys_addr,
- char *buf, int buflen)
+static int chmc_print_dimm(int syndrome_code,
+ unsigned long phys_addr,
+ char *buf, int buflen)
{
- struct bank_info *bp;
- struct obp_mem_layout *prop;
+ struct chmc_bank_info *bp;
+ struct chmc_obp_mem_layout *prop;
int bank_in_controller, first_dimm;
- bp = find_bank(phys_addr);
+ bp = chmc_find_bank(phys_addr);
if (bp == NULL ||
syndrome_code < SYNDROME_MIN ||
syndrome_code > SYNDROME_MAX) {
return 0;
}
- prop = &bp->mp->layout_prop;
+ prop = &bp->p->layout_prop;
bank_in_controller = bp->bank_id & (CHMCTRL_NBANKS - 1);
first_dimm = (bank_in_controller & (CHMCTRL_NDGRPS - 1));
first_dimm *= CHMCTRL_NDIMMS;
if (syndrome_code != SYNDROME_MIN) {
- struct obp_map *map;
- int qword, where_in_line, where, map_index, map_offset;
- unsigned int map_val;
-
- /* Yaay, single bit error so we can figure out
- * the exact dimm.
- */
- if (prop->symmetric)
- map = &prop->map[0];
- else
- map = &prop->map[1];
-
- /* Covert syndrome code into the way the bits are
- * positioned on the bus.
- */
- if (syndrome_code < 144 - 16)
- syndrome_code += 16;
- else if (syndrome_code < 144)
- syndrome_code -= (144 - 7);
- else if (syndrome_code < (144 + 3))
- syndrome_code -= (144 + 3 - 4);
- else
- syndrome_code -= 144 + 3;
+ char *dimm_str;
+ int pin;
- /* All this magic has to do with how a cache line
- * comes over the wire on Safari. A 64-bit line
- * comes over in 4 quadword cycles, each of which
- * transmit ECC/MTAG info as well as the actual
- * data. 144 bits per quadword, 576 total.
- */
-#define LINE_SIZE 64
-#define LINE_ADDR_MSK (LINE_SIZE - 1)
-#define QW_PER_LINE 4
-#define QW_BYTES (LINE_SIZE / QW_PER_LINE)
-#define QW_BITS 144
-#define LAST_BIT (576 - 1)
-
- qword = (phys_addr & LINE_ADDR_MSK) / QW_BYTES;
- where_in_line = ((3 - qword) * QW_BITS) + syndrome_code;
- where = (LAST_BIT - where_in_line);
- map_index = where >> 2;
- map_offset = where & 0x3;
- map_val = map->dimm_map[map_index];
- map_val = ((map_val >> ((3 - map_offset) << 1)) & (2 - 1));
-
- sprintf(buf, "%s, pin %3d",
- prop->dimm_labels[first_dimm + map_val],
- map->pin_map[where_in_line]);
+ get_pin_and_dimm_str(syndrome_code, phys_addr, &pin,
+ &dimm_str, prop, first_dimm);
+ sprintf(buf, "%s, pin %3d", dimm_str, pin);
} else {
int dimm;
* the code is executing, you must use special ASI load/store else
* you go through the global mapping.
*/
-static u64 read_mcreg(struct mctrl_info *mp, unsigned long offset)
+static u64 chmc_read_mcreg(struct chmc *p, unsigned long offset)
{
- unsigned long ret;
- int this_cpu = get_cpu();
+ unsigned long ret, this_cpu;
- if (mp->portid == this_cpu) {
+ preempt_disable();
+
+ this_cpu = real_hard_smp_processor_id();
+
+ if (p->portid == this_cpu) {
__asm__ __volatile__("ldxa [%1] %2, %0"
: "=r" (ret)
: "r" (offset), "i" (ASI_MCU_CTRL_REG));
} else {
__asm__ __volatile__("ldxa [%1] %2, %0"
: "=r" (ret)
- : "r" (mp->regs + offset),
+ : "r" (p->regs + offset),
"i" (ASI_PHYS_BYPASS_EC_E));
}
- put_cpu();
+
+ preempt_enable();
return ret;
}
#if 0 /* currently unused */
-static void write_mcreg(struct mctrl_info *mp, unsigned long offset, u64 val)
+static void chmc_write_mcreg(struct chmc *p, unsigned long offset, u64 val)
{
- if (mp->portid == smp_processor_id()) {
+ if (p->portid == smp_processor_id()) {
__asm__ __volatile__("stxa %0, [%1] %2"
: : "r" (val),
"r" (offset), "i" (ASI_MCU_CTRL_REG));
} else {
__asm__ __volatile__("ldxa %0, [%1] %2"
: : "r" (val),
- "r" (mp->regs + offset),
+ "r" (p->regs + offset),
"i" (ASI_PHYS_BYPASS_EC_E));
}
}
#endif
-static void interpret_one_decode_reg(struct mctrl_info *mp, int which_bank, u64 val)
+static void chmc_interpret_one_decode_reg(struct chmc *p, int which_bank, u64 val)
{
- struct bank_info *p = &mp->logical_banks[which_bank];
-
- p->mp = mp;
- p->bank_id = (CHMCTRL_NBANKS * mp->portid) + which_bank;
- p->raw_reg = val;
- p->valid = (val & MEM_DECODE_VALID) >> MEM_DECODE_VALID_SHIFT;
- p->uk = (val & MEM_DECODE_UK) >> MEM_DECODE_UK_SHIFT;
- p->um = (val & MEM_DECODE_UM) >> MEM_DECODE_UM_SHIFT;
- p->lk = (val & MEM_DECODE_LK) >> MEM_DECODE_LK_SHIFT;
- p->lm = (val & MEM_DECODE_LM) >> MEM_DECODE_LM_SHIFT;
-
- p->base = (p->um);
- p->base &= ~(p->uk);
- p->base <<= PA_UPPER_BITS_SHIFT;
-
- switch(p->lk) {
+ struct chmc_bank_info *bp = &p->logical_banks[which_bank];
+
+ bp->p = p;
+ bp->bank_id = (CHMCTRL_NBANKS * p->portid) + which_bank;
+ bp->raw_reg = val;
+ bp->valid = (val & MEM_DECODE_VALID) >> MEM_DECODE_VALID_SHIFT;
+ bp->uk = (val & MEM_DECODE_UK) >> MEM_DECODE_UK_SHIFT;
+ bp->um = (val & MEM_DECODE_UM) >> MEM_DECODE_UM_SHIFT;
+ bp->lk = (val & MEM_DECODE_LK) >> MEM_DECODE_LK_SHIFT;
+ bp->lm = (val & MEM_DECODE_LM) >> MEM_DECODE_LM_SHIFT;
+
+ bp->base = (bp->um);
+ bp->base &= ~(bp->uk);
+ bp->base <<= PA_UPPER_BITS_SHIFT;
+
+ switch(bp->lk) {
case 0xf:
default:
- p->interleave = 1;
+ bp->interleave = 1;
break;
case 0xe:
- p->interleave = 2;
+ bp->interleave = 2;
break;
case 0xc:
- p->interleave = 4;
+ bp->interleave = 4;
break;
case 0x8:
- p->interleave = 8;
+ bp->interleave = 8;
break;
case 0x0:
- p->interleave = 16;
+ bp->interleave = 16;
break;
};
/* UK[10] is reserved, and UK[11] is not set for the SDRAM
* bank size definition.
*/
- p->size = (((unsigned long)p->uk &
- ((1UL << 10UL) - 1UL)) + 1UL) << PA_UPPER_BITS_SHIFT;
- p->size /= p->interleave;
+ bp->size = (((unsigned long)bp->uk &
+ ((1UL << 10UL) - 1UL)) + 1UL) << PA_UPPER_BITS_SHIFT;
+ bp->size /= bp->interleave;
}
-static void fetch_decode_regs(struct mctrl_info *mp)
+static void chmc_fetch_decode_regs(struct chmc *p)
{
- if (mp->layout_size == 0)
+ if (p->layout_size == 0)
return;
- interpret_one_decode_reg(mp, 0,
- read_mcreg(mp, CHMCTRL_DECODE1));
- interpret_one_decode_reg(mp, 1,
- read_mcreg(mp, CHMCTRL_DECODE2));
- interpret_one_decode_reg(mp, 2,
- read_mcreg(mp, CHMCTRL_DECODE3));
- interpret_one_decode_reg(mp, 3,
- read_mcreg(mp, CHMCTRL_DECODE4));
+ chmc_interpret_one_decode_reg(p, 0,
+ chmc_read_mcreg(p, CHMCTRL_DECODE1));
+ chmc_interpret_one_decode_reg(p, 1,
+ chmc_read_mcreg(p, CHMCTRL_DECODE2));
+ chmc_interpret_one_decode_reg(p, 2,
+ chmc_read_mcreg(p, CHMCTRL_DECODE3));
+ chmc_interpret_one_decode_reg(p, 3,
+ chmc_read_mcreg(p, CHMCTRL_DECODE4));
}
-static int init_one_mctrl(struct device_node *dp)
+static int __devinit chmc_probe(struct of_device *op,
+ const struct of_device_id *match)
{
- struct mctrl_info *mp = kzalloc(sizeof(*mp), GFP_KERNEL);
- int portid = of_getintprop_default(dp, "portid", -1);
- struct linux_prom64_registers *regs;
- void *pval;
- int len;
-
- if (!mp)
- return -1;
+ struct device_node *dp = op->node;
+ unsigned long ver;
+ const void *pval;
+ int len, portid;
+ struct chmc *p;
+ int err;
+
+ err = -ENODEV;
+ __asm__ ("rdpr %%ver, %0" : "=r" (ver));
+ if ((ver >> 32UL) == __JALAPENO_ID ||
+ (ver >> 32UL) == __SERRANO_ID)
+ goto out;
+
+ portid = of_getintprop_default(dp, "portid", -1);
if (portid == -1)
- goto fail;
+ goto out;
- mp->portid = portid;
pval = of_get_property(dp, "memory-layout", &len);
- mp->layout_size = len;
- if (!pval)
- mp->layout_size = 0;
- else {
- if (mp->layout_size > sizeof(mp->layout_prop))
- goto fail;
- memcpy(&mp->layout_prop, pval, len);
+ if (pval && len > sizeof(p->layout_prop)) {
+ printk(KERN_ERR PFX "Unexpected memory-layout property "
+ "size %d.\n", len);
+ goto out;
}
- regs = of_get_property(dp, "reg", NULL);
- if (!regs || regs->reg_size != 0x48)
- goto fail;
+ err = -ENOMEM;
+ p = kzalloc(sizeof(*p), GFP_KERNEL);
+ if (!p) {
+ printk(KERN_ERR PFX "Could not allocate struct chmc.\n");
+ goto out;
+ }
- mp->regs = ioremap(regs->phys_addr, regs->reg_size);
- if (mp->regs == NULL)
- goto fail;
+ p->portid = portid;
+ p->layout_size = len;
+ if (!pval)
+ p->layout_size = 0;
+ else
+ memcpy(&p->layout_prop, pval, len);
+
+ p->regs = of_ioremap(&op->resource[0], 0, 0x48, "chmc");
+ if (!p->regs) {
+ printk(KERN_ERR PFX "Could not map registers.\n");
+ goto out_free;
+ }
- if (mp->layout_size != 0UL) {
- mp->timing_control1 = read_mcreg(mp, CHMCTRL_TCTRL1);
- mp->timing_control2 = read_mcreg(mp, CHMCTRL_TCTRL2);
- mp->timing_control3 = read_mcreg(mp, CHMCTRL_TCTRL3);
- mp->timing_control4 = read_mcreg(mp, CHMCTRL_TCTRL4);
- mp->memaddr_control = read_mcreg(mp, CHMCTRL_MACTRL);
+ if (p->layout_size != 0UL) {
+ p->timing_control1 = chmc_read_mcreg(p, CHMCTRL_TCTRL1);
+ p->timing_control2 = chmc_read_mcreg(p, CHMCTRL_TCTRL2);
+ p->timing_control3 = chmc_read_mcreg(p, CHMCTRL_TCTRL3);
+ p->timing_control4 = chmc_read_mcreg(p, CHMCTRL_TCTRL4);
+ p->memaddr_control = chmc_read_mcreg(p, CHMCTRL_MACTRL);
}
- fetch_decode_regs(mp);
+ chmc_fetch_decode_regs(p);
- list_add(&mp->list, &mctrl_list);
+ mc_list_add(&p->list);
- /* Report the device. */
- printk(KERN_INFO "%s: US3 memory controller at %p [%s]\n",
+ printk(KERN_INFO PFX "UltraSPARC-III memory controller at %s [%s]\n",
dp->full_name,
- mp->regs, (mp->layout_size ? "ACTIVE" : "INACTIVE"));
+ (p->layout_size ? "ACTIVE" : "INACTIVE"));
- return 0;
+ dev_set_drvdata(&op->dev, p);
+
+ err = 0;
+
+out:
+ return err;
+
+out_free:
+ kfree(p);
+ goto out;
+}
+
+static int __devinit us3mc_probe(struct of_device *op,
+ const struct of_device_id *match)
+{
+ if (mc_type == MC_TYPE_SAFARI)
+ return chmc_probe(op, match);
+ else if (mc_type == MC_TYPE_JBUS)
+ return jbusmc_probe(op, match);
+ return -ENODEV;
+}
-fail:
- if (mp) {
- if (mp->regs != NULL)
- iounmap(mp->regs);
- kfree(mp);
+static void __devexit chmc_destroy(struct of_device *op, struct chmc *p)
+{
+ list_del(&p->list);
+ of_iounmap(&op->resource[0], p->regs, 0x48);
+ kfree(p);
+}
+
+static void __devexit jbusmc_destroy(struct of_device *op, struct jbusmc *p)
+{
+ mc_list_del(&p->list);
+ of_iounmap(&op->resource[0], p->regs, JBUSMC_REGS_SIZE);
+ kfree(p);
+}
+
+static int __devexit us3mc_remove(struct of_device *op)
+{
+ void *p = dev_get_drvdata(&op->dev);
+
+ if (p) {
+ if (mc_type == MC_TYPE_SAFARI)
+ chmc_destroy(op, p);
+ else if (mc_type == MC_TYPE_JBUS)
+ jbusmc_destroy(op, p);
}
- return -1;
+ return 0;
}
-static int __init chmc_init(void)
+static const struct of_device_id us3mc_match[] = {
+ {
+ .name = "memory-controller",
+ },
+ {},
+};
+MODULE_DEVICE_TABLE(of, us3mc_match);
+
+static struct of_platform_driver us3mc_driver = {
+ .name = "us3mc",
+ .match_table = us3mc_match,
+ .probe = us3mc_probe,
+ .remove = __devexit_p(us3mc_remove),
+};
+
+static inline bool us3mc_platform(void)
+{
+ if (tlb_type == cheetah || tlb_type == cheetah_plus)
+ return true;
+ return false;
+}
+
+static int __init us3mc_init(void)
{
- struct device_node *dp;
+ unsigned long ver;
+ int ret;
- /* This driver is only for cheetah platforms. */
- if (tlb_type != cheetah && tlb_type != cheetah_plus)
+ if (!us3mc_platform())
return -ENODEV;
- for_each_node_by_name(dp, "memory-controller")
- init_one_mctrl(dp);
+ __asm__ __volatile__("rdpr %%ver, %0" : "=r" (ver));
+ if ((ver >> 32UL) == __JALAPENO_ID ||
+ (ver >> 32UL) == __SERRANO_ID) {
+ mc_type = MC_TYPE_JBUS;
+ us3mc_dimm_printer = jbusmc_print_dimm;
+ } else {
+ mc_type = MC_TYPE_SAFARI;
+ us3mc_dimm_printer = chmc_print_dimm;
+ }
- for_each_node_by_name(dp, "mc-us3")
- init_one_mctrl(dp);
+ ret = register_dimm_printer(us3mc_dimm_printer);
- return 0;
+ if (!ret) {
+ ret = of_register_driver(&us3mc_driver, &of_bus_type);
+ if (ret)
+ unregister_dimm_printer(us3mc_dimm_printer);
+ }
+ return ret;
}
-static void __exit chmc_cleanup(void)
+static void __exit us3mc_cleanup(void)
{
- struct list_head *head = &mctrl_list;
- struct list_head *tmp = head->next;
-
- for (;;) {
- struct mctrl_info *p =
- list_entry(tmp, struct mctrl_info, list);
- if (tmp == head)
- break;
- tmp = tmp->next;
-
- list_del(&p->list);
- iounmap(p->regs);
- kfree(p);
+ if (us3mc_platform()) {
+ unregister_dimm_printer(us3mc_dimm_printer);
+ of_unregister_driver(&us3mc_driver);
}
}
-module_init(chmc_init);
-module_exit(chmc_cleanup);
+module_init(us3mc_init);
+module_exit(us3mc_cleanup);
projects / linux-2.6-omap-h63xx.git / blobdiff