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Diffstat (limited to 'drivers/cpufreq/ppc_cbe_cpufreq_pervasive.c')
-rw-r--r--drivers/cpufreq/ppc_cbe_cpufreq_pervasive.c102
1 files changed, 0 insertions, 102 deletions
diff --git a/drivers/cpufreq/ppc_cbe_cpufreq_pervasive.c b/drivers/cpufreq/ppc_cbe_cpufreq_pervasive.c
deleted file mode 100644
index 04830cd95333..000000000000
--- a/drivers/cpufreq/ppc_cbe_cpufreq_pervasive.c
+++ /dev/null
@@ -1,102 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0-or-later
-/*
- * pervasive backend for the cbe_cpufreq driver
- *
- * This driver makes use of the pervasive unit to
- * engage the desired frequency.
- *
- * (C) Copyright IBM Deutschland Entwicklung GmbH 2005-2007
- *
- * Author: Christian Krafft <krafft@de.ibm.com>
- */
-
-#include <linux/io.h>
-#include <linux/kernel.h>
-#include <linux/time.h>
-#include <asm/machdep.h>
-#include <asm/hw_irq.h>
-#include <asm/cell-regs.h>
-
-#include "ppc_cbe_cpufreq.h"
-
-/* to write to MIC register */
-static u64 MIC_Slow_Fast_Timer_table[] = {
- [0 ... 7] = 0x007fc00000000000ull,
-};
-
-/* more values for the MIC */
-static u64 MIC_Slow_Next_Timer_table[] = {
- 0x0000240000000000ull,
- 0x0000268000000000ull,
- 0x000029C000000000ull,
- 0x00002D0000000000ull,
- 0x0000300000000000ull,
- 0x0000334000000000ull,
- 0x000039C000000000ull,
- 0x00003FC000000000ull,
-};
-
-
-int cbe_cpufreq_set_pmode(int cpu, unsigned int pmode)
-{
- struct cbe_pmd_regs __iomem *pmd_regs;
- struct cbe_mic_tm_regs __iomem *mic_tm_regs;
- unsigned long flags;
- u64 value;
-#ifdef DEBUG
- long time;
-#endif
-
- local_irq_save(flags);
-
- mic_tm_regs = cbe_get_cpu_mic_tm_regs(cpu);
- pmd_regs = cbe_get_cpu_pmd_regs(cpu);
-
-#ifdef DEBUG
- time = jiffies;
-#endif
-
- out_be64(&mic_tm_regs->slow_fast_timer_0, MIC_Slow_Fast_Timer_table[pmode]);
- out_be64(&mic_tm_regs->slow_fast_timer_1, MIC_Slow_Fast_Timer_table[pmode]);
-
- out_be64(&mic_tm_regs->slow_next_timer_0, MIC_Slow_Next_Timer_table[pmode]);
- out_be64(&mic_tm_regs->slow_next_timer_1, MIC_Slow_Next_Timer_table[pmode]);
-
- value = in_be64(&pmd_regs->pmcr);
- /* set bits to zero */
- value &= 0xFFFFFFFFFFFFFFF8ull;
- /* set bits to next pmode */
- value |= pmode;
-
- out_be64(&pmd_regs->pmcr, value);
-
-#ifdef DEBUG
- /* wait until new pmode appears in status register */
- value = in_be64(&pmd_regs->pmsr) & 0x07;
- while (value != pmode) {
- cpu_relax();
- value = in_be64(&pmd_regs->pmsr) & 0x07;
- }
-
- time = jiffies - time;
- time = jiffies_to_msecs(time);
- pr_debug("had to wait %lu ms for a transition using " \
- "pervasive unit\n", time);
-#endif
- local_irq_restore(flags);
-
- return 0;
-}
-
-
-int cbe_cpufreq_get_pmode(int cpu)
-{
- int ret;
- struct cbe_pmd_regs __iomem *pmd_regs;
-
- pmd_regs = cbe_get_cpu_pmd_regs(cpu);
- ret = in_be64(&pmd_regs->pmsr) & 0x07;
-
- return ret;
-}
-