#include <asm/sn/pcidev.h>
#include <asm/sn/pcibus_provider_defs.h>
#include <asm/sn/tioce_provider.h>
+#include <asm/sn/sn2/sn_hwperf.h>
+
+/*
+ * 1/26/2006
+ *
+ * WAR for SGI PV 944642. For revA TIOCE, need to use the following recipe
+ * (taken from the above PV) before and after accessing tioce internal MMR's
+ * to avoid tioce lockups.
+ *
+ * The recipe as taken from the PV:
+ *
+ * if(mmr address < 0x45000) {
+ * if(mmr address == 0 or 0x80)
+ * mmr wrt or read address 0xc0
+ * else if(mmr address == 0x148 or 0x200)
+ * mmr wrt or read address 0x28
+ * else
+ * mmr wrt or read address 0x158
+ *
+ * do desired mmr access (rd or wrt)
+ *
+ * if(mmr address == 0x100)
+ * mmr wrt or read address 0x38
+ * mmr wrt or read address 0xb050
+ * } else
+ * do desired mmr access
+ *
+ * According to hw, we can use reads instead of writes to the above addres
+ *
+ * Note this WAR can only to be used for accessing internal MMR's in the
+ * TIOCE Coretalk Address Range 0x0 - 0x07ff_ffff. This includes the
+ * "Local CE Registers and Memories" and "PCI Compatible Config Space" address
+ * spaces from table 2-1 of the "CE Programmer's Reference Overview" document.
+ *
+ * All registers defined in struct tioce will meet that criteria.
+ */
+
+static void inline
+tioce_mmr_war_pre(struct tioce_kernel *kern, void *mmr_addr)
+{
+ u64 mmr_base;
+ u64 mmr_offset;
+
+ if (kern->ce_common->ce_rev != TIOCE_REV_A)
+ return;
+
+ mmr_base = kern->ce_common->ce_pcibus.bs_base;
+ mmr_offset = (u64)mmr_addr - mmr_base;
+
+ if (mmr_offset < 0x45000) {
+ u64 mmr_war_offset;
+
+ if (mmr_offset == 0 || mmr_offset == 0x80)
+ mmr_war_offset = 0xc0;
+ else if (mmr_offset == 0x148 || mmr_offset == 0x200)
+ mmr_war_offset = 0x28;
+ else
+ mmr_war_offset = 0x158;
+
+ readq_relaxed((void *)(mmr_base + mmr_war_offset));
+ }
+}
+
+static void inline
+tioce_mmr_war_post(struct tioce_kernel *kern, void *mmr_addr)
+{
+ u64 mmr_base;
+ u64 mmr_offset;
+
+ if (kern->ce_common->ce_rev != TIOCE_REV_A)
+ return;
+
+ mmr_base = kern->ce_common->ce_pcibus.bs_base;
+ mmr_offset = (u64)mmr_addr - mmr_base;
+
+ if (mmr_offset < 0x45000) {
+ if (mmr_offset == 0x100)
+ readq_relaxed((void *)(mmr_base + 0x38));
+ readq_relaxed((void *)(mmr_base + 0xb050));
+ }
+}
+
+/* load mmr contents into a variable */
+#define tioce_mmr_load(kern, mmrp, varp) do {\
+ tioce_mmr_war_pre(kern, mmrp); \
+ *(varp) = readq_relaxed(mmrp); \
+ tioce_mmr_war_post(kern, mmrp); \
+} while (0)
+
+/* store variable contents into mmr */
+#define tioce_mmr_store(kern, mmrp, varp) do {\
+ tioce_mmr_war_pre(kern, mmrp); \
+ writeq(*varp, mmrp); \
+ tioce_mmr_war_post(kern, mmrp); \
+} while (0)
+
+/* store immediate value into mmr */
+#define tioce_mmr_storei(kern, mmrp, val) do {\
+ tioce_mmr_war_pre(kern, mmrp); \
+ writeq(val, mmrp); \
+ tioce_mmr_war_post(kern, mmrp); \
+} while (0)
+
+/* set bits (immediate value) into mmr */
+#define tioce_mmr_seti(kern, mmrp, bits) do {\
+ u64 tmp; \
+ tioce_mmr_load(kern, mmrp, &tmp); \
+ tmp |= (bits); \
+ tioce_mmr_store(kern, mmrp, &tmp); \
+} while (0)
+
+/* clear bits (immediate value) into mmr */
+#define tioce_mmr_clri(kern, mmrp, bits) do { \
+ u64 tmp; \
+ tioce_mmr_load(kern, mmrp, &tmp); \
+ tmp &= ~(bits); \
+ tioce_mmr_store(kern, mmrp, &tmp); \
+} while (0)
/**
* Bus address ranges for the 5 flavors of TIOCE DMA
#define TIOCE_ATE_M40 2
#define TIOCE_ATE_M40S 3
-#define KB(x) ((x) << 10)
-#define MB(x) ((x) << 20)
-#define GB(x) ((x) << 30)
+#define KB(x) ((u64)(x) << 10)
+#define MB(x) ((u64)(x) << 20)
+#define GB(x) ((u64)(x) << 30)
/**
* tioce_dma_d64 - create a DMA mapping using 64-bit direct mode
int last;
int entries;
int nates;
- int pagesize;
+ u64 pagesize;
u64 *ate_shadow;
u64 *ate_reg;
u64 addr;
ate = ATE_MAKE(addr, pagesize);
ate_shadow[i + j] = ate;
- writeq(ate, &ate_reg[i + j]);
+ tioce_mmr_storei(ce_kern, &ate_reg[i + j], ate);
addr += pagesize;
}
u64 tmp;
ce_kern->ce_port[port].dirmap_shadow = ct_upper;
- writeq(ct_upper, &ce_mmr->ce_ure_dir_map[port]);
+ tioce_mmr_storei(ce_kern, &ce_mmr->ce_ure_dir_map[port],
+ ct_upper);
tmp = ce_mmr->ce_ure_dir_map[port];
dma_ok = 1;
} else
if (TIOCE_D32_ADDR(bus_addr)) {
if (--ce_kern->ce_port[port].dirmap_refcnt == 0) {
ce_kern->ce_port[port].dirmap_shadow = 0;
- writeq(0, &ce_mmr->ce_ure_dir_map[port]);
+ tioce_mmr_storei(ce_kern, &ce_mmr->ce_ure_dir_map[port],
+ 0);
}
} else {
struct tioce_dmamap *map;
} else if (--map->refcnt == 0) {
for (i = 0; i < map->ate_count; i++) {
map->ate_shadow[i] = 0;
- map->ate_hw[i] = 0;
+ tioce_mmr_storei(ce_kern, &map->ate_hw[i], 0);
}
list_del(&map->ce_dmamap_list);
spin_unlock_irqrestore(&ce_kern->ce_lock, flags);
dma_map_done:
- if (mapaddr & barrier)
+ if (mapaddr && barrier)
mapaddr = tioce_dma_barrier(mapaddr, 1);
return mapaddr;
soft->ce_pcibus.bs_persist_segment,
soft->ce_pcibus.bs_persist_busnum, 0, 0, 0, 0, 0);
+ if (ret_stuff.v0)
+ panic("tioce_error_intr_handler: Fatal TIOCE error");
+
return IRQ_HANDLED;
}
/**
+ * tioce_reserve_m32 - reserve M32 ate's for the indicated address range
+ * @tioce_kernel: TIOCE context to reserve ate's for
+ * @base: starting bus address to reserve
+ * @limit: last bus address to reserve
+ *
+ * If base/limit falls within the range of bus space mapped through the
+ * M32 space, reserve the resources corresponding to the range.
+ */
+static void
+tioce_reserve_m32(struct tioce_kernel *ce_kern, u64 base, u64 limit)
+{
+ int ate_index, last_ate, ps;
+ struct tioce *ce_mmr;
+
+ if (!TIOCE_M32_ADDR(base))
+ return;
+
+ ce_mmr = (struct tioce *)ce_kern->ce_common->ce_pcibus.bs_base;
+ ps = ce_kern->ce_ate3240_pagesize;
+ ate_index = ATE_PAGE(base, ps);
+ last_ate = ate_index + ATE_NPAGES(base, limit-base+1, ps) - 1;
+
+ if (ate_index < 64)
+ ate_index = 64;
+
+ while (ate_index <= last_ate) {
+ u64 ate;
+
+ ate = ATE_MAKE(0xdeadbeef, ps);
+ ce_kern->ce_ate3240_shadow[ate_index] = ate;
+ tioce_mmr_storei(ce_kern, &ce_mmr->ce_ure_ate3240[ate_index],
+ ate);
+ ate_index++;
+ }
+}
+
+/**
* tioce_kern_init - init kernel structures related to a given TIOCE
* @tioce_common: ptr to a cached tioce_common struct that originated in prom
- */ static struct tioce_kernel *
+ */
+static struct tioce_kernel *
tioce_kern_init(struct tioce_common *tioce_common)
{
int i;
+ int ps;
+ int dev;
u32 tmp;
+ unsigned int seg, bus;
struct tioce *tioce_mmr;
struct tioce_kernel *tioce_kern;
* here to use pci_read_config_xxx() so use the raw_pci_ops vector.
*/
- raw_pci_ops->read(tioce_common->ce_pcibus.bs_persist_segment,
- tioce_common->ce_pcibus.bs_persist_busnum,
- PCI_DEVFN(2, 0), PCI_SECONDARY_BUS, 1, &tmp);
+ seg = tioce_common->ce_pcibus.bs_persist_segment;
+ bus = tioce_common->ce_pcibus.bs_persist_busnum;
+
+ raw_pci_ops->read(seg, bus, PCI_DEVFN(2, 0), PCI_SECONDARY_BUS, 1,&tmp);
tioce_kern->ce_port1_secondary = (u8) tmp;
/*
*/
tioce_mmr = (struct tioce *)tioce_common->ce_pcibus.bs_base;
- __sn_clrq_relaxed(&tioce_mmr->ce_ure_page_map, CE_URE_PAGESIZE_MASK);
- __sn_setq_relaxed(&tioce_mmr->ce_ure_page_map, CE_URE_256K_PAGESIZE);
- tioce_kern->ce_ate3240_pagesize = KB(256);
+ tioce_mmr_clri(tioce_kern, &tioce_mmr->ce_ure_page_map,
+ CE_URE_PAGESIZE_MASK);
+ tioce_mmr_seti(tioce_kern, &tioce_mmr->ce_ure_page_map,
+ CE_URE_256K_PAGESIZE);
+ ps = tioce_kern->ce_ate3240_pagesize = KB(256);
for (i = 0; i < TIOCE_NUM_M40_ATES; i++) {
tioce_kern->ce_ate40_shadow[i] = 0;
- writeq(0, &tioce_mmr->ce_ure_ate40[i]);
+ tioce_mmr_storei(tioce_kern, &tioce_mmr->ce_ure_ate40[i], 0);
}
for (i = 0; i < TIOCE_NUM_M3240_ATES; i++) {
tioce_kern->ce_ate3240_shadow[i] = 0;
- writeq(0, &tioce_mmr->ce_ure_ate3240[i]);
+ tioce_mmr_storei(tioce_kern, &tioce_mmr->ce_ure_ate3240[i], 0);
+ }
+
+ /*
+ * Reserve ATE's corresponding to reserved address ranges. These
+ * include:
+ *
+ * Memory space covered by each PPB mem base/limit register
+ * Memory space covered by each PPB prefetch base/limit register
+ *
+ * These bus ranges are for pio (downstream) traffic only, and so
+ * cannot be used for DMA.
+ */
+
+ for (dev = 1; dev <= 2; dev++) {
+ u64 base, limit;
+
+ /* mem base/limit */
+
+ raw_pci_ops->read(seg, bus, PCI_DEVFN(dev, 0),
+ PCI_MEMORY_BASE, 2, &tmp);
+ base = (u64)tmp << 16;
+
+ raw_pci_ops->read(seg, bus, PCI_DEVFN(dev, 0),
+ PCI_MEMORY_LIMIT, 2, &tmp);
+ limit = (u64)tmp << 16;
+ limit |= 0xfffffUL;
+
+ if (base < limit)
+ tioce_reserve_m32(tioce_kern, base, limit);
+
+ /*
+ * prefetch mem base/limit. The tioce ppb's have 64-bit
+ * decoders, so read the upper portions w/o checking the
+ * attributes.
+ */
+
+ raw_pci_ops->read(seg, bus, PCI_DEVFN(dev, 0),
+ PCI_PREF_MEMORY_BASE, 2, &tmp);
+ base = ((u64)tmp & PCI_PREF_RANGE_MASK) << 16;
+
+ raw_pci_ops->read(seg, bus, PCI_DEVFN(dev, 0),
+ PCI_PREF_BASE_UPPER32, 4, &tmp);
+ base |= (u64)tmp << 32;
+
+ raw_pci_ops->read(seg, bus, PCI_DEVFN(dev, 0),
+ PCI_PREF_MEMORY_LIMIT, 2, &tmp);
+
+ limit = ((u64)tmp & PCI_PREF_RANGE_MASK) << 16;
+ limit |= 0xfffffUL;
+
+ raw_pci_ops->read(seg, bus, PCI_DEVFN(dev, 0),
+ PCI_PREF_LIMIT_UPPER32, 4, &tmp);
+ limit |= (u64)tmp << 32;
+
+ if ((base < limit) && TIOCE_M32_ADDR(base))
+ tioce_reserve_m32(tioce_kern, base, limit);
}
return tioce_kern;
{
struct pcidev_info *pcidev_info;
struct tioce_common *ce_common;
+ struct tioce_kernel *ce_kern;
struct tioce *ce_mmr;
u64 force_int_val;
ce_common = (struct tioce_common *)pcidev_info->pdi_pcibus_info;
ce_mmr = (struct tioce *)ce_common->ce_pcibus.bs_base;
+ ce_kern = (struct tioce_kernel *)ce_common->ce_kernel_private;
+
+ /*
+ * TIOCE Rev A workaround (PV 945826), force an interrupt by writing
+ * the TIO_INTx register directly (1/26/2006)
+ */
+ if (ce_common->ce_rev == TIOCE_REV_A) {
+ u64 int_bit_mask = (1ULL << sn_irq_info->irq_int_bit);
+ u64 status;
+
+ tioce_mmr_load(ce_kern, &ce_mmr->ce_adm_int_status, &status);
+ if (status & int_bit_mask) {
+ u64 force_irq = (1 << 8) | sn_irq_info->irq_irq;
+ u64 ctalk = sn_irq_info->irq_xtalkaddr;
+ u64 nasid, offset;
+
+ nasid = (ctalk & CTALK_NASID_MASK) >> CTALK_NASID_SHFT;
+ offset = (ctalk & CTALK_NODE_OFFSET);
+ HUB_S(TIO_IOSPACE_ADDR(nasid, offset), force_irq);
+ }
+
+ return;
+ }
/*
* irq_int_bit is originally set up by prom, and holds the interrupt
default:
return;
}
- writeq(force_int_val, &ce_mmr->ce_adm_force_int);
+ tioce_mmr_storei(ce_kern, &ce_mmr->ce_adm_force_int, force_int_val);
}
/**
{
struct pcidev_info *pcidev_info;
struct tioce_common *ce_common;
+ struct tioce_kernel *ce_kern;
struct tioce *ce_mmr;
int bit;
u64 vector;
ce_common = (struct tioce_common *)pcidev_info->pdi_pcibus_info;
ce_mmr = (struct tioce *)ce_common->ce_pcibus.bs_base;
+ ce_kern = (struct tioce_kernel *)ce_common->ce_kernel_private;
bit = sn_irq_info->irq_int_bit;
- __sn_setq_relaxed(&ce_mmr->ce_adm_int_mask, (1UL << bit));
+ tioce_mmr_seti(ce_kern, &ce_mmr->ce_adm_int_mask, (1UL << bit));
vector = (u64)sn_irq_info->irq_irq << INTR_VECTOR_SHFT;
vector |= sn_irq_info->irq_xtalkaddr;
- writeq(vector, &ce_mmr->ce_adm_int_dest[bit]);
- __sn_clrq_relaxed(&ce_mmr->ce_adm_int_mask, (1UL << bit));
+ tioce_mmr_storei(ce_kern, &ce_mmr->ce_adm_int_dest[bit], vector);
+ tioce_mmr_clri(ce_kern, &ce_mmr->ce_adm_int_mask, (1UL << bit));
tioce_force_interrupt(sn_irq_info);
}
static void *
tioce_bus_fixup(struct pcibus_bussoft *prom_bussoft, struct pci_controller *controller)
{
+ int my_nasid;
+ cnodeid_t my_cnode, mem_cnode;
struct tioce_common *tioce_common;
+ struct tioce_kernel *tioce_kern;
+ struct tioce *tioce_mmr;
/*
* Allocate kernel bus soft and copy from prom.
memcpy(tioce_common, prom_bussoft, sizeof(struct tioce_common));
tioce_common->ce_pcibus.bs_base |= __IA64_UNCACHED_OFFSET;
- if (tioce_kern_init(tioce_common) == NULL) {
+ tioce_kern = tioce_kern_init(tioce_common);
+ if (tioce_kern == NULL) {
kfree(tioce_common);
return NULL;
}
+ /*
+ * Clear out any transient errors before registering the error
+ * interrupt handler.
+ */
+
+ tioce_mmr = (struct tioce *)tioce_common->ce_pcibus.bs_base;
+ tioce_mmr_seti(tioce_kern, &tioce_mmr->ce_adm_int_status_alias, ~0ULL);
+ tioce_mmr_seti(tioce_kern, &tioce_mmr->ce_adm_error_summary_alias,
+ ~0ULL);
+ tioce_mmr_seti(tioce_kern, &tioce_mmr->ce_dre_comp_err_addr, ~0ULL);
+
if (request_irq(SGI_PCIASIC_ERROR,
tioce_error_intr_handler,
SA_SHIRQ, "TIOCE error", (void *)tioce_common))
tioce_common->ce_pcibus.bs_persist_segment,
tioce_common->ce_pcibus.bs_persist_busnum);
+ /*
+ * identify closest nasid for memory allocations
+ */
+
+ my_nasid = NASID_GET(tioce_common->ce_pcibus.bs_base);
+ my_cnode = nasid_to_cnodeid(my_nasid);
+
+ if (sn_hwperf_get_nearest_node(my_cnode, &mem_cnode, NULL) < 0) {
+ printk(KERN_WARNING "tioce_bus_fixup: failed to find "
+ "closest node with MEM to TIO node %d\n", my_cnode);
+ mem_cnode = (cnodeid_t)-1; /* use any node */
+ }
+
+ controller->node = mem_cnode;
+
return tioce_common;
}
/* CE ASIC part & mfgr information */
#define TIOCE_PART_NUM 0xCE00
-#define TIOCE_MFGR_NUM 0x36
+#define TIOCE_SRC_ID 0x01
#define TIOCE_REV_A 0x1
/* CE Virtual PPB Vendor/Device IDs */
/* CE Host Bridge Vendor/Device IDs */
#define CE_HOST_BRIDGE_VENDOR_ID 0x10a9
-#define CE_HOST_BRIDGE_DEVICE_ID 0x4003
+#define CE_HOST_BRIDGE_DEVICE_ID 0x4001
#define TIOCE_NUM_M40_ATES 4096
u64 ce_end_of_struct; /* 0x044400 */
} tioce_t;
+/* ce_lsiX_gb_cfg1 register bit masks & shifts */
+#define CE_LSI_GB_CFG1_RXL0S_THS_SHFT 0
+#define CE_LSI_GB_CFG1_RXL0S_THS_MASK (0xffULL << 0)
+#define CE_LSI_GB_CFG1_RXL0S_SMP_SHFT 8
+#define CE_LSI_GB_CFG1_RXL0S_SMP_MASK (0xfULL << 8);
+#define CE_LSI_GB_CFG1_RXL0S_ADJ_SHFT 12
+#define CE_LSI_GB_CFG1_RXL0S_ADJ_MASK (0x7ULL << 12)
+#define CE_LSI_GB_CFG1_RXL0S_FLT_SHFT 15
+#define CE_LSI_GB_CFG1_RXL0S_FLT_MASK (0x1ULL << 15)
+#define CE_LSI_GB_CFG1_LPBK_SEL_SHFT 16
+#define CE_LSI_GB_CFG1_LPBK_SEL_MASK (0x3ULL << 16)
+#define CE_LSI_GB_CFG1_LPBK_EN_SHFT 18
+#define CE_LSI_GB_CFG1_LPBK_EN_MASK (0x1ULL << 18)
+#define CE_LSI_GB_CFG1_RVRS_LB_SHFT 19
+#define CE_LSI_GB_CFG1_RVRS_LB_MASK (0x1ULL << 19)
+#define CE_LSI_GB_CFG1_RVRS_CLK_SHFT 20
+#define CE_LSI_GB_CFG1_RVRS_CLK_MASK (0x3ULL << 20)
+#define CE_LSI_GB_CFG1_SLF_TS_SHFT 24
+#define CE_LSI_GB_CFG1_SLF_TS_MASK (0xfULL << 24)
/* ce_adm_int_mask/ce_adm_int_status register bit defines */
#define CE_ADM_INT_CE_ERROR_SHFT 0
#define CE_URE_RD_MRG_ENABLE (0x1ULL << 0)
#define CE_URE_WRT_MRG_ENABLE1 (0x1ULL << 4)
#define CE_URE_WRT_MRG_ENABLE2 (0x1ULL << 5)
+#define CE_URE_WRT_MRG_TIMER_SHFT 12
+#define CE_URE_WRT_MRG_TIMER_MASK (0x7FFULL << CE_URE_WRT_MRG_TIMER_SHFT)
+#define CE_URE_WRT_MRG_TIMER(x) (((u64)(x) << \
+ CE_URE_WRT_MRG_TIMER_SHFT) & \
+ CE_URE_WRT_MRG_TIMER_MASK)
#define CE_URE_RSPQ_BYPASS_DISABLE (0x1ULL << 24)
#define CE_URE_UPS_DAT1_PAR_DISABLE (0x1ULL << 32)
#define CE_URE_UPS_HDR1_PAR_DISABLE (0x1ULL << 33)
#define CE_URE_SI (0x1ULL << 0)
#define CE_URE_ELAL_SHFT 4
#define CE_URE_ELAL_MASK (0x7ULL << CE_URE_ELAL_SHFT)
+#define CE_URE_ELAL_SET(n) (((u64)(n) << CE_URE_ELAL_SHFT) & \
+ CE_URE_ELAL_MASK)
#define CE_URE_ELAL1_SHFT 8
#define CE_URE_ELAL1_MASK (0x7ULL << CE_URE_ELAL1_SHFT)
+#define CE_URE_ELAL1_SET(n) (((u64)(n) << CE_URE_ELAL1_SHFT) & \
+ CE_URE_ELAL1_MASK)
#define CE_URE_SCC (0x1ULL << 12)
#define CE_URE_PN1_SHFT 16
#define CE_URE_PN1_MASK (0xFFULL << CE_URE_PN1_SHFT)
#define CE_URE_HPC (0x1ULL << 6)
#define CE_URE_SPLV_SHFT 7
#define CE_URE_SPLV_MASK (0xFFULL << CE_URE_SPLV_SHFT)
+#define CE_URE_SPLV_SET(n) (((u64)(n) << CE_URE_SPLV_SHFT) & \
+ CE_URE_SPLV_MASK)
#define CE_URE_SPLS_SHFT 15
#define CE_URE_SPLS_MASK (0x3ULL << CE_URE_SPLS_SHFT)
+#define CE_URE_SPLS_SET(n) (((u64)(n) << CE_URE_SPLS_SHFT) & \
+ CE_URE_SPLS_MASK)
#define CE_URE_PSN1_SHFT 19
#define CE_URE_PSN1_MASK (0x1FFFULL << CE_URE_PSN1_SHFT)
#define CE_URE_PSN2_SHFT 32
projects / platform / kernel / linux-rpi.git / commitdiff