powerpc: Remove FW_FEATURE ISERIES from arch code

This is no longer selectable, so just remove all the dependent code.

Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>

arch/powerpc/include/asm/abs_addr.h

@@ -17,7 +17,6 @@
 #include <asm/types.h>
 #include <asm/page.h>
 #include <asm/prom.h>
-#include <asm/firmware.h>
 
 struct mschunks_map {
         unsigned long num_chunks;
@@ -46,30 +45,12 @@ static inline unsigned long addr_to_chunk(unsigned long addr)
 
 static inline unsigned long phys_to_abs(unsigned long pa)
 {
-	unsigned long chunk;
-
-	/* This is a no-op on non-iSeries */
-	if (!firmware_has_feature(FW_FEATURE_ISERIES))
-		return pa;
-
-	chunk = addr_to_chunk(pa);
-
-	if (chunk < mschunks_map.num_chunks)
-		chunk = mschunks_map.mapping[chunk];
-
-	return chunk_to_addr(chunk) + (pa & MSCHUNKS_OFFSET_MASK);
+	return pa;
 }
 
 /* Convenience macros */
 #define virt_to_abs(va) phys_to_abs(__pa(va))
 #define abs_to_virt(aa) __va(aa)
 
-/*
- * Converts Virtual Address to Real Address for
- * Legacy iSeries Hypervisor calls
- */
-#define iseries_hv_addr(virtaddr)	\
-	(0x8000000000000000UL | virt_to_abs(virtaddr))
-
 #endif /* __KERNEL__ */
 #endif /* _ASM_POWERPC_ABS_ADDR_H */

arch/powerpc/include/asm/firmware.h

@@ -41,7 +41,6 @@
 #define FW_FEATURE_XDABR	ASM_CONST(0x0000000000040000)
 #define FW_FEATURE_MULTITCE	ASM_CONST(0x0000000000080000)
 #define FW_FEATURE_SPLPAR	ASM_CONST(0x0000000000100000)
-#define FW_FEATURE_ISERIES	ASM_CONST(0x0000000000200000)
 #define FW_FEATURE_LPAR		ASM_CONST(0x0000000000400000)
 #define FW_FEATURE_PS3_LV1	ASM_CONST(0x0000000000800000)
 #define FW_FEATURE_BEAT		ASM_CONST(0x0000000001000000)
@@ -65,8 +64,6 @@ enum {
 		FW_FEATURE_MULTITCE | FW_FEATURE_SPLPAR | FW_FEATURE_LPAR |
 		FW_FEATURE_CMO | FW_FEATURE_VPHN | FW_FEATURE_XCMO,
 	FW_FEATURE_PSERIES_ALWAYS = 0,
-	FW_FEATURE_ISERIES_POSSIBLE = FW_FEATURE_ISERIES | FW_FEATURE_LPAR,
-	FW_FEATURE_ISERIES_ALWAYS = FW_FEATURE_ISERIES | FW_FEATURE_LPAR,
 	FW_FEATURE_POWERNV_POSSIBLE = FW_FEATURE_OPAL | FW_FEATURE_OPALv2,
 	FW_FEATURE_POWERNV_ALWAYS = 0,
 	FW_FEATURE_PS3_POSSIBLE = FW_FEATURE_LPAR | FW_FEATURE_PS3_LV1,
@@ -79,9 +76,6 @@ enum {
 #ifdef CONFIG_PPC_PSERIES
 		FW_FEATURE_PSERIES_POSSIBLE |
 #endif
-#ifdef CONFIG_PPC_ISERIES
-		FW_FEATURE_ISERIES_POSSIBLE |
-#endif
 #ifdef CONFIG_PPC_POWERNV
 		FW_FEATURE_POWERNV_POSSIBLE |
 #endif
@@ -99,9 +93,6 @@ enum {
 #ifdef CONFIG_PPC_PSERIES
 		FW_FEATURE_PSERIES_ALWAYS &
 #endif
-#ifdef CONFIG_PPC_ISERIES
-		FW_FEATURE_ISERIES_ALWAYS &
-#endif
 #ifdef CONFIG_PPC_POWERNV
 		FW_FEATURE_POWERNV_ALWAYS &
 #endif

arch/powerpc/include/asm/time.h

@@ -18,11 +18,6 @@
 #include <linux/percpu.h>
 
 #include <asm/processor.h>
-#ifdef CONFIG_PPC_ISERIES
-#include <asm/paca.h>
-#include <asm/firmware.h>
-#include <asm/iseries/hv_call.h>
-#endif
 
 /* time.c */
 extern unsigned long tb_ticks_per_jiffy;
@@ -166,15 +161,6 @@ static inline void set_dec(int val)
 #else
 #ifndef CONFIG_BOOKE
 	--val;
-#endif
-#ifdef CONFIG_PPC_ISERIES
-	if (firmware_has_feature(FW_FEATURE_ISERIES) &&
-			get_lppaca()->shared_proc) {
-		get_lppaca()->virtual_decr = val;
-		if (get_dec() > val)
-			HvCall_setVirtualDecr();
-		return;
-	}
 #endif
 	mtspr(SPRN_DEC, val);
 #endif /* not 40x or 8xx_CPU6 */
@@ -217,7 +203,6 @@ DECLARE_PER_CPU(struct cpu_usage, cpu_usage_array);
 #endif
 
 extern void secondary_cpu_time_init(void);
-extern void iSeries_time_init_early(void);
 
 DECLARE_PER_CPU(u64, decrementers_next_tb);
 

arch/powerpc/kernel/irq.c

@@ -211,11 +211,6 @@ notrace void arch_local_irq_restore(unsigned long en)
 	 * External interrupt events on non-iseries will have caused
 	 * interrupts to be hard-disabled, so there is no problem, we
 	 * cannot have preempted.
-	 *
-	 * That leaves us with EEs on iSeries or decrementer interrupts,
-	 * which I decided to safely ignore. The preemption would have
-	 * itself been the result of an interrupt, upon which return we
-	 * will have checked for pending events on the old CPU.
 	 */
 	irq_happened = get_irq_happened();
 	if (!irq_happened)
@@ -458,15 +453,6 @@ void do_IRQ(struct pt_regs *regs)
 	irq_exit();
 	set_irq_regs(old_regs);
 
-#ifdef CONFIG_PPC_ISERIES
-	if (firmware_has_feature(FW_FEATURE_ISERIES) &&
-			get_lppaca()->int_dword.fields.decr_int) {
-		get_lppaca()->int_dword.fields.decr_int = 0;
-		/* Signal a fake decrementer interrupt */
-		timer_interrupt(regs);
-	}
-#endif
-
 	trace_irq_exit(regs);
 }
 

arch/powerpc/kernel/isa-bridge.c

@@ -29,7 +29,6 @@
 #include <asm/pci-bridge.h>
 #include <asm/machdep.h>
 #include <asm/ppc-pci.h>
-#include <asm/firmware.h>
 
 unsigned long isa_io_base;	/* NULL if no ISA bus */
 EXPORT_SYMBOL(isa_io_base);
@@ -261,8 +260,6 @@ static struct notifier_block isa_bridge_notifier = {
  */
 static int __init isa_bridge_init(void)
 {
-	if (firmware_has_feature(FW_FEATURE_ISERIES))
-		return 0;
 	bus_register_notifier(&pci_bus_type, &isa_bridge_notifier);
 	return 0;
 }

arch/powerpc/kernel/lparcfg.c

@@ -26,7 +26,6 @@
 #include <linux/seq_file.h>
 #include <linux/slab.h>
 #include <asm/uaccess.h>
-#include <asm/iseries/hv_lp_config.h>
 #include <asm/lppaca.h>
 #include <asm/hvcall.h>
 #include <asm/firmware.h>
@@ -55,80 +54,14 @@ static unsigned long get_purr(void)
 	int cpu;
 
 	for_each_possible_cpu(cpu) {
-		if (firmware_has_feature(FW_FEATURE_ISERIES))
-			sum_purr += lppaca_of(cpu).emulated_time_base;
-		else {
-			struct cpu_usage *cu;
+		struct cpu_usage *cu;
 
-			cu = &per_cpu(cpu_usage_array, cpu);
-			sum_purr += cu->current_tb;
-		}
+		cu = &per_cpu(cpu_usage_array, cpu);
+		sum_purr += cu->current_tb;
 	}
 	return sum_purr;
 }
 
-#ifdef CONFIG_PPC_ISERIES
-
-/*
- * Methods used to fetch LPAR data when running on an iSeries platform.
- */
-static int iseries_lparcfg_data(struct seq_file *m, void *v)
-{
-	unsigned long pool_id;
-	int shared, entitled_capacity, max_entitled_capacity;
-	int processors, max_processors;
-	unsigned long purr = get_purr();
-
-	shared = (int)(local_paca->lppaca_ptr->shared_proc);
-
-	seq_printf(m, "system_active_processors=%d\n",
-		   (int)HvLpConfig_getSystemPhysicalProcessors());
-
-	seq_printf(m, "system_potential_processors=%d\n",
-		   (int)HvLpConfig_getSystemPhysicalProcessors());
-
-	processors = (int)HvLpConfig_getPhysicalProcessors();
-	seq_printf(m, "partition_active_processors=%d\n", processors);
-
-	max_processors = (int)HvLpConfig_getMaxPhysicalProcessors();
-	seq_printf(m, "partition_potential_processors=%d\n", max_processors);
-
-	if (shared) {
-		entitled_capacity = HvLpConfig_getSharedProcUnits();
-		max_entitled_capacity = HvLpConfig_getMaxSharedProcUnits();
-	} else {
-		entitled_capacity = processors * 100;
-		max_entitled_capacity = max_processors * 100;
-	}
-	seq_printf(m, "partition_entitled_capacity=%d\n", entitled_capacity);
-
-	seq_printf(m, "partition_max_entitled_capacity=%d\n",
-		   max_entitled_capacity);
-
-	if (shared) {
-		pool_id = HvLpConfig_getSharedPoolIndex();
-		seq_printf(m, "pool=%d\n", (int)pool_id);
-		seq_printf(m, "pool_capacity=%d\n",
-			   (int)(HvLpConfig_getNumProcsInSharedPool(pool_id) *
-				 100));
-		seq_printf(m, "purr=%ld\n", purr);
-	}
-
-	seq_printf(m, "shared_processor_mode=%d\n", shared);
-
-	return 0;
-}
-
-#else				/* CONFIG_PPC_ISERIES */
-
-static int iseries_lparcfg_data(struct seq_file *m, void *v)
-{
-	return 0;
-}
-
-#endif				/* CONFIG_PPC_ISERIES */
-
-#ifdef CONFIG_PPC_PSERIES
 /*
  * Methods used to fetch LPAR data when running on a pSeries platform.
  */
@@ -648,8 +581,7 @@ static ssize_t lparcfg_write(struct file *file, const char __user * buf,
 	u8 new_weight, *new_weight_ptr = &new_weight;
 	ssize_t retval;
 
-	if (!firmware_has_feature(FW_FEATURE_SPLPAR) ||
-			firmware_has_feature(FW_FEATURE_ISERIES))
+	if (!firmware_has_feature(FW_FEATURE_SPLPAR))
 		return -EINVAL;
 
 	if (count > kbuf_sz)
@@ -709,21 +641,6 @@ static ssize_t lparcfg_write(struct file *file, const char __user * buf,
 	return retval;
 }
 
-#else				/* CONFIG_PPC_PSERIES */
-
-static int pseries_lparcfg_data(struct seq_file *m, void *v)
-{
-	return 0;
-}
-
-static ssize_t lparcfg_write(struct file *file, const char __user * buf,
-			     size_t count, loff_t * off)
-{
-	return -EINVAL;
-}
-
-#endif				/* CONFIG_PPC_PSERIES */
-
 static int lparcfg_data(struct seq_file *m, void *v)
 {
 	struct device_node *rootdn;
@@ -738,19 +655,11 @@ static int lparcfg_data(struct seq_file *m, void *v)
 	rootdn = of_find_node_by_path("/");
 	if (rootdn) {
 		tmp = of_get_property(rootdn, "model", NULL);
-		if (tmp) {
+		if (tmp)
 			model = tmp;
-			/* Skip "IBM," - see platforms/iseries/dt.c */
-			if (firmware_has_feature(FW_FEATURE_ISERIES))
-				model += 4;
-		}
 		tmp = of_get_property(rootdn, "system-id", NULL);
-		if (tmp) {
+		if (tmp)
 			system_id = tmp;
-			/* Skip "IBM," - see platforms/iseries/dt.c */
-			if (firmware_has_feature(FW_FEATURE_ISERIES))
-				system_id += 4;
-		}
 		lp_index_ptr = of_get_property(rootdn, "ibm,partition-no",
 					NULL);
 		if (lp_index_ptr)
@@ -761,8 +670,6 @@ static int lparcfg_data(struct seq_file *m, void *v)
 	seq_printf(m, "system_type=%s\n", model);
 	seq_printf(m, "partition_id=%d\n", (int)lp_index);
 
-	if (firmware_has_feature(FW_FEATURE_ISERIES))
-		return iseries_lparcfg_data(m, v);
 	return pseries_lparcfg_data(m, v);
 }
 
@@ -786,8 +693,7 @@ static int __init lparcfg_init(void)
 	umode_t mode = S_IRUSR | S_IRGRP | S_IROTH;
 
 	/* Allow writing if we have FW_FEATURE_SPLPAR */
-	if (firmware_has_feature(FW_FEATURE_SPLPAR) &&
-			!firmware_has_feature(FW_FEATURE_ISERIES))
+	if (firmware_has_feature(FW_FEATURE_SPLPAR))
 		mode |= S_IWUSR;
 
 	ent = proc_create("powerpc/lparcfg", mode, NULL, &lparcfg_fops);

arch/powerpc/kernel/paca.c

@@ -11,13 +11,10 @@
 #include <linux/export.h>
 #include <linux/memblock.h>
 
-#include <asm/firmware.h>
 #include <asm/lppaca.h>
 #include <asm/paca.h>
 #include <asm/sections.h>
 #include <asm/pgtable.h>
-#include <asm/iseries/lpar_map.h>
-#include <asm/iseries/hv_types.h>
 #include <asm/kexec.h>
 
 /* This symbol is provided by the linker - let it fill in the paca
@@ -30,8 +27,8 @@ extern unsigned long __toc_start;
  * The structure which the hypervisor knows about - this structure
  * should not cross a page boundary.  The vpa_init/register_vpa call
  * is now known to fail if the lppaca structure crosses a page
- * boundary.  The lppaca is also used on legacy iSeries and POWER5
- * pSeries boxes.  The lppaca is 640 bytes long, and cannot readily
+ * boundary.  The lppaca is also used on POWER5 pSeries boxes.
+ * The lppaca is 640 bytes long, and cannot readily
  * change since the hypervisor knows its layout, so a 1kB alignment
  * will suffice to ensure that it doesn't cross a page boundary.
  */
@@ -183,12 +180,9 @@ void __init allocate_pacas(void)
 	/*
 	 * We can't take SLB misses on the paca, and we want to access them
 	 * in real mode, so allocate them within the RMA and also within
-	 * the first segment. On iSeries they must be within the area mapped
-	 * by the HV, which is HvPagesToMap * HVPAGESIZE bytes.
+	 * the first segment.
 	 */
 	limit = min(0x10000000ULL, ppc64_rma_size);
-	if (firmware_has_feature(FW_FEATURE_ISERIES))
-		limit = min(limit, HvPagesToMap * HVPAGESIZE);
 
 	paca_size = PAGE_ALIGN(sizeof(struct paca_struct) * nr_cpu_ids);
 

arch/powerpc/kernel/pci-common.c

@@ -38,7 +38,6 @@
 #include <asm/byteorder.h>
 #include <asm/machdep.h>
 #include <asm/ppc-pci.h>
-#include <asm/firmware.h>
 #include <asm/eeh.h>
 
 static DEFINE_SPINLOCK(hose_spinlock);
@@ -219,20 +218,6 @@ static int pci_read_irq_line(struct pci_dev *pci_dev)
 	struct of_irq oirq;
 	unsigned int virq;
 
-	/* The current device-tree that iSeries generates from the HV
-	 * PCI informations doesn't contain proper interrupt routing,
-	 * and all the fallback would do is print out crap, so we
-	 * don't attempt to resolve the interrupts here at all, some
-	 * iSeries specific fixup does it.
-	 *
-	 * In the long run, we will hopefully fix the generated device-tree
-	 * instead.
-	 */
-#ifdef CONFIG_PPC_ISERIES
-	if (firmware_has_feature(FW_FEATURE_ISERIES))
-		return -1;
-#endif
-
 	pr_debug("PCI: Try to map irq for %s...\n", pci_name(pci_dev));
 
 #ifdef DEBUG