MIPS: Octeon: Remove usage of cvmx_wait() everywhere.

Signed-off-by: Steven J. Hill <steven.hill@cavium.com>
Acked-by: David Daney <david.daney@cavium.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/17389/
Signed-off-by: James Hogan <jhogan@kernel.org>

arch/mips/cavium-octeon/executive/cvmx-helper.c

@@ -862,7 +862,7 @@ int __cvmx_helper_errata_fix_ipd_ptr_alignment(void)
 	 */
 	cvmx_write_csr(CVMX_ASXX_RX_PRT_EN(INTERFACE(FIX_IPD_OUTPORT)), 0);
 
-	cvmx_wait(100000000ull);
+	__delay(100000000ull);
 
 	for (retry_loop_cnt = 0; retry_loop_cnt < 10; retry_loop_cnt++) {
 		retry_cnt = 100000;

arch/mips/cavium-octeon/executive/cvmx-spi.c

@@ -215,7 +215,7 @@ int cvmx_spi_reset_cb(int interface, cvmx_spi_mode_t mode)
 	spxx_clk_ctl.u64 = 0;
 	spxx_clk_ctl.s.runbist = 1;
 	cvmx_write_csr(CVMX_SPXX_CLK_CTL(interface), spxx_clk_ctl.u64);
-	cvmx_wait(10 * MS);
+	__delay(10 * MS);
 	spxx_bist_stat.u64 = cvmx_read_csr(CVMX_SPXX_BIST_STAT(interface));
 	if (spxx_bist_stat.s.stat0)
 		cvmx_dprintf
@@ -265,14 +265,14 @@ int cvmx_spi_reset_cb(int interface, cvmx_spi_mode_t mode)
 	spxx_clk_ctl.s.rcvtrn = 0;
 	spxx_clk_ctl.s.srxdlck = 0;
 	cvmx_write_csr(CVMX_SPXX_CLK_CTL(interface), spxx_clk_ctl.u64);
-	cvmx_wait(100 * MS);
+	__delay(100 * MS);
 
 	/* Reset SRX0 DLL */
 	spxx_clk_ctl.s.srxdlck = 1;
 	cvmx_write_csr(CVMX_SPXX_CLK_CTL(interface), spxx_clk_ctl.u64);
 
 	/* Waiting for Inf0 Spi4 RX DLL to lock */
-	cvmx_wait(100 * MS);
+	__delay(100 * MS);
 
 	/* Enable dynamic alignment */
 	spxx_trn4_ctl.s.trntest = 0;
@@ -527,7 +527,7 @@ int cvmx_spi_training_cb(int interface, cvmx_spi_mode_t mode, int timeout)
 	spxx_clk_ctl.s.rcvtrn = 1;
 	spxx_clk_ctl.s.srxdlck = 1;
 	cvmx_write_csr(CVMX_SPXX_CLK_CTL(interface), spxx_clk_ctl.u64);
-	cvmx_wait(1000 * MS);
+	__delay(1000 * MS);
 
 	/* SRX0 clear the boot bit */
 	spxx_trn4_ctl.u64 = cvmx_read_csr(CVMX_SPXX_TRN4_CTL(interface));
@@ -536,7 +536,7 @@ int cvmx_spi_training_cb(int interface, cvmx_spi_mode_t mode, int timeout)
 
 	/* Wait for the training sequence to complete */
 	cvmx_dprintf("SPI%d: Waiting for training\n", interface);
-	cvmx_wait(1000 * MS);
+	__delay(1000 * MS);
 	/* Wait a really long time here */
 	timeout_time = cvmx_get_cycle() + 1000ull * MS * 600;
 	/*

arch/mips/include/asm/octeon/cvmx-fpa.h

@@ -36,6 +36,8 @@
 #ifndef __CVMX_FPA_H__
 #define __CVMX_FPA_H__
 
+#include <linux/delay.h>
+
 #include <asm/octeon/cvmx-address.h>
 #include <asm/octeon/cvmx-fpa-defs.h>
 
@@ -165,7 +167,7 @@ static inline void cvmx_fpa_enable(void)
 		}
 
 		/* Enforce a 10 cycle delay between config and enable */
-		cvmx_wait(10);
+		__delay(10);
 	}
 
 	/* FIXME: CVMX_FPA_CTL_STATUS read is unmodelled */

arch/mips/include/asm/octeon/cvmx.h

@@ -30,6 +30,7 @@
 
 #include <linux/kernel.h>
 #include <linux/string.h>
+#include <linux/delay.h>
 
 enum cvmx_mips_space {
 	CVMX_MIPS_SPACE_XKSEG = 3LL,
@@ -428,18 +429,6 @@ static inline uint64_t cvmx_get_cycle(void)
 	return cycle;
 }
 
-/**
- * Wait for the specified number of cycle
- *
- */
-static inline void cvmx_wait(uint64_t cycles)
-{
-	uint64_t done = cvmx_get_cycle() + cycles;
-
-	while (cvmx_get_cycle() < done)
-		; /* Spin */
-}
-
 /**
  * Reads a chip global cycle counter.  This counts CPU cycles since
  * chip reset.	The counter is 64 bit.
@@ -481,7 +470,7 @@ static inline uint64_t cvmx_get_cycle_global(void)
 				result = -1;				\
 				break;					\
 			} else						\
-				cvmx_wait(100);				\
+				__delay(100);				\
 		}							\
 	} while (0);							\
 	result;								\

arch/mips/pci/pcie-octeon.c

@@ -639,7 +639,7 @@ static int __cvmx_pcie_rc_initialize_link_gen1(int pcie_port)
 			cvmx_dprintf("PCIe: Port %d link timeout\n", pcie_port);
 			return -1;
 		}
-		cvmx_wait(10000);
+		__delay(10000);
 		pciercx_cfg032.u32 = cvmx_pcie_cfgx_read(pcie_port, CVMX_PCIERCX_CFG032(pcie_port));
 	} while (pciercx_cfg032.s.dlla == 0);
 
@@ -821,7 +821,7 @@ static int __cvmx_pcie_rc_initialize_gen1(int pcie_port)
 	 * don't poll PESCX_CTL_STATUS2[PCIERST], but simply wait a
 	 * fixed number of cycles.
 	 */
-	cvmx_wait(400000);
+	__delay(400000);
 
 	/*
 	 * PESCX_BIST_STATUS2[PCLK_RUN] was missing on pass 1 of
@@ -1018,7 +1018,7 @@ static int __cvmx_pcie_rc_initialize_gen1(int pcie_port)
 		i = in_p_offset;
 		while (i--) {
 			cvmx_write64_uint32(write_address, 0);
-			cvmx_wait(10000);
+			__delay(10000);
 		}
 
 		/*
@@ -1034,7 +1034,7 @@ static int __cvmx_pcie_rc_initialize_gen1(int pcie_port)
 			dbg_data.u64 = cvmx_read_csr(CVMX_PEXP_NPEI_DBG_DATA);
 			old_in_fif_p_count = dbg_data.s.data & 0xff;
 			cvmx_write64_uint32(write_address, 0);
-			cvmx_wait(10000);
+			__delay(10000);
 			dbg_data.u64 = cvmx_read_csr(CVMX_PEXP_NPEI_DBG_DATA);
 			in_fif_p_count = dbg_data.s.data & 0xff;
 		} while (in_fif_p_count != ((old_in_fif_p_count+1) & 0xff));
@@ -1053,7 +1053,7 @@ static int __cvmx_pcie_rc_initialize_gen1(int pcie_port)
 			cvmx_dprintf("PCIe: Port %d aligning TLP counters as workaround to maintain ordering\n", pcie_port);
 			while (in_fif_p_count != 0) {
 				cvmx_write64_uint32(write_address, 0);
-				cvmx_wait(10000);
+				__delay(10000);
 				in_fif_p_count = (in_fif_p_count + 1) & 0xff;
 			}
 			/*
@@ -1105,7 +1105,7 @@ static int __cvmx_pcie_rc_initialize_link_gen2(int pcie_port)
 	do {
 		if (cvmx_get_cycle() - start_cycle >  octeon_get_clock_rate())
 			return -1;
-		cvmx_wait(10000);
+		__delay(10000);
 		pciercx_cfg032.u32 = cvmx_pcie_cfgx_read(pcie_port, CVMX_PCIERCX_CFG032(pcie_port));
 	} while ((pciercx_cfg032.s.dlla == 0) || (pciercx_cfg032.s.lt == 1));